UBS (UBS) 20-F5 Mar 212020 FY Annual report (foreign)Financial data

Company Profile

Document and Entity Information

Document and Entity Information	12 Months Ended
Document and Entity Information	Dec. 31, 2020shares
Entity Information [Line Items]
Entity registrant name	UBS Group AG
Entity central index key	0001610520
Entity current reporting status	Yes
Entity voluntary filers	No
Current fiscal year end date	--12-31
Entity filer category	Large Accelerated Filer
Entity well known seasoned issuer	No
Entity common stock shares outstanding	3,859,055,395
Document type	20-F
Document period end date	Dec. 31, 2020
Amendment flag	false
Document fiscal year focus	2020
Document fiscal period focus	FY
Entity emerging growth company	false
Entity shell company	false
Entity interactive data current	Yes
UBS AG
Entity Information [Line Items]
Entity registrant name	UBS AG
Entity central index key	0001114446
Entity current reporting status	Yes
Entity voluntary filers	No
Current fiscal year end date	--12-31
Entity filer category	Non-accelerated Filer
Entity well known seasoned issuer	No
Entity common stock shares outstanding	3,858,408,466
Document type	20-F
Document period end date	Dec. 31, 2020
Amendment flag	false
Document fiscal year focus	2020
Document fiscal period focus	FY
Entity emerging growth company	false
Entity shell company	false
Entity interactive data current	Yes

Consolidated Income Statement

Consolidated Income Statement - USD ($) $ in Millions		12 Months Ended
Consolidated Income Statement - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019		Dec. 31, 2018
Income Statement [Line Items]
Interest income from financial instruments measured at amortized cost and fair value through other comprehensive income		$ 8,810	$ 10,684		$ 10,100
Interest expense from financial instruments measured at amortized cost		(4,247)	(7,194)		(6,391)
Net interest income from financial instruments measured at fair value through profit or loss		1,299	1,011		1,338
Net interest income		5,862	4,501		5,048
Other net income from financial instruments measured at fair value through profit or loss		6,960	6,842		6,960
Credit loss (expense) / release		(694)	(78)		(118)
Fee and commission income	[1]	20,961	19,110		19,598
Fee and commission expense		(1,775)	(1,696)		(1,703)
Net fee and commission income		19,186	17,413		17,895
Other income		1,076	212		428
Total operating income		32,390	28,889	[2]	30,213	[2]
Personnel expenses		17,224	16,084		16,132
General and administrative expenses		4,885	5,288		6,797
Depreciation and impairment of property, equipment and software		2,069	1,765		1,228
Amortization and impairment of goodwill and intangible assets		57	175		65
Total operating expenses		24,235	23,312		24,222
Operating profit / (loss) before tax		8,155	5,577		5,991
Tax expense / (benefit)		1,583	1,267		1,468
Net profit / (loss)		6,572	4,310		4,522
Net profit / (loss) attributable to non-controlling interests		15	6		7
Net profit / (loss) attributable to shareholders		$ 6,557	$ 4,304		$ 4,516
Earnings per share
Basic		$ 1.83	$ 1.17		$ 1.21
Diluted		$ 1.77	$ 1.14		$ 1.18
UBS AG
Income Statement [Line Items]
Interest income from financial instruments measured at amortized cost and fair value through other comprehensive income		$ 8,816	$ 10,703		$ 10,121
Interest expense from financial instruments measured at amortized cost		(4,333)	(7,303)		(6,494)
Net interest income from financial instruments measured at fair value through profit or loss		1,305	1,015		1,344
Net interest income		5,788	4,415		4,971
Other net income from financial instruments measured at fair value through profit or loss		6,930	6,833		6,953
Credit loss (expense) / release		(695)	(78)		(117)
Fee and commission income	[3]	20,982	19,156		19,632
Fee and commission expense		(1,775)	(1,696)		(1,703)
Net fee and commission income		19,207	17,460		17,930
Other income		1,549	677		905
Total operating income		32,780	29,307	[2]	30,642	[2]
Personnel expenses		14,686	13,801		13,992
General and administrative expenses		8,486	8,586		10,075
Depreciation and impairment of property, equipment and software		1,851	1,576		1,052
Amortization and impairment of goodwill and intangible assets		57	175		65
Total operating expenses		25,081	24,138		25,184
Operating profit / (loss) before tax		7,699	5,169		5,458
Tax expense / (benefit)		1,488	1,198		1,345
Net profit / (loss)		6,211	3,971		4,113
Net profit / (loss) attributable to non-controlling interests		15	6		7
Net profit / (loss) attributable to shareholders		$ 6,196	$ 3,965		$ 4,107

[1]	For the year ended 31 December 2020, reflects third-party fee and commission income of USD 12,475 million for Global Wealth Management, USD 1,426 million for Personal & Corporate Banking, USD 3,129 million for Asset Management, USD 3,882 million for the Investment Bank and USD 49 million for Group Functions (for the year ended 31 December 2019: USD 11,694 million for Global Wealth Management, USD 1,307 million for Personal & Corporate Banking, USD 2,659 million for Asset Management, USD 3,355 million for the Investment Bank and USD 94 million for Group Functions; for the year ended 31 December 2018: USD 12,059 million for Global Wealth Management, USD 1,338 million for Personal & Corporate Banking, USD 2,579 million for Asset Management, USD 3,525 million for the Investment Bank and USD 97 million for Group Functions).
[2]	Effective as of 1 January 2020, the Investment Bank was realigned into two new business lines, Global Banking and Global Markets, which affects how the business is managed and therefore the allocation of operating income to the regions. The presentation of prior-year information reflects the new regional management structure of the Investment Bank.
[3]	For the year ended 31 December 2020, reflects third-party fee and commission income of USD 12,475 million for Global Wealth Management, USD 1,427 million for Personal & Corporate Banking, USD 3,129 million for Asset Management, USD 3,901 million for the Investment Bank and USD 50 million for Group Functions (for the year ended 31 December 2019: USD 11,694 million for Global Wealth Management, USD 1,307 million for Personal & Corporate Banking, USD 2,659 million for Asset Management, USD 3,397 million for the Investment Bank and USD 98 million for Group Functions; for the year ended 31 December 2018: USD 12,059 million for Global Wealth Management, USD 1,338 million for Personal & Corporate Banking, USD 2,579 million for Asset Management, USD 3,557 million for the Investment Bank and USD 100 million for Group Functions).

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020		Dec. 31, 2019	Dec. 31, 2018
Statement Of Comprehensive Income [Line Items]
Net profit / (loss)	$ 6,572		$ 4,310	$ 4,522
Net profit / (loss) attributable to shareholders	6,557		4,304	4,516
Net profit / (loss) attributable to non-controlling interests	15		6	7
Foreign currency translation
Subtotal foreign currency translation, net of tax	21		(4)	(1)
Defined benefit plans
Gains / (losses) on defined benefit plans, before tax	(327)		(146)	(220)
Income tax relating to defined benefit plans	109		(41)	276
Subtotal defined benefit plans, net of tax	(218)		(186)	56
Own credit on financial liabilities designated at fair value
Subtotal own credit on financial liabilities designated at fair value, net of tax	(293)		(392)	509
Total comprehensive income
Total other comprehensive income	1,740		781	(292)
Total other comprehensive income that may be reclassified to the income statement, net of tax	2,230		1,363	(855)
Total other comprehensive income that will not be reclassified to the income statement, net of tax	(490)		(582)	563
Total comprehensive income	8,312		5,091	4,231
Comprehensive income attributable to shareholders
Statement Of Comprehensive Income [Line Items]
Net profit / (loss)	6,557		4,304	4,516
Foreign currency translation
Foreign currency translation movements related to net assets of foreign operations, before tax	2,103		200	(725)
Effective portion of changes in fair value of hedging instruments designated as net investment hedges, before tax	(936)		(134)	181
Foreign currency translation differences on foreign operations reclassified to the income statement	(7)		52	3
Effective portion of changes in fair value of hedging instruments designated as net investment hedge reclassified to the income statement	2		(14)	2
Income tax relating to foreign currency translations, including the effect of net investment hedges	(67)		0	(2)
Subtotal foreign currency translation, net of tax	1,095	[1]	104	(541)
Financial assets measured at fair value through other comprehensive income
Net unrealized gains / (losses), before tax	223		189	(56)
Realized gains reclassified to the income statement from equity	(40)		(33)	0
Realized losses reclassified to the income statement from equity	0		2	0
Income tax relating to net unrealized gains / (losses)	(48)		(41)	12
Subtotal financial assets measured at fair value through other comprehensive income, net of tax	136		117	(45)
Cash flow hedges of interest rate risk
Effective portion of changes in fair value of hedging instruments recognized in OCI	2,012		1,571	(42)
Net (gains) / losses reclassified to the income statement from equity	(770)		(175)	(294)
Income tax related to cash flow hedges	(231)		(253)	67
Subtotal cash flow hedges, net of tax	1,011	[2]	1,143	(269)
Cost of hedging
Change in fair value of cost of hedging, before tax	(46)
Amortization of initial cost of hedging to the income statement	33
Income tax relating to cost of hedging	0
Subtotal cost of hedging, net of tax	(13)
Defined benefit plans
Gains / (losses) on defined benefit plans, before tax	(327)	[3]	(146)	(220)
Income tax relating to defined benefit plans	109		(41)	276
Subtotal defined benefit plans, net of tax	(218)		(186)	56
Own credit on financial liabilities designated at fair value
Gains / (losses) from own credit on financial liabilities designated at fair value, before tax	(293)		(400)	517
Income tax relating to own credit on financial liabilities designated at fair value	0		8	(8)
Subtotal own credit on financial liabilities designated at fair value, net of tax	(293)		(392)	509
Total comprehensive income
Total other comprehensive income	1,719		785	(290)
Total other comprehensive income that may be reclassified to the income statement, net of tax	2,230		1,363	(855)
Total other comprehensive income that will not be reclassified to the income statement, net of tax	(511)		(578)	565
Total comprehensive income	8,276		5,089	4,225
Comprehensive income attributable to non-controlling interests
Statement Of Comprehensive Income [Line Items]
Net profit / (loss)	15		6	7
Foreign currency translation
Foreign currency translation movements related to net assets of foreign operations, before tax	21		(4)	(1)
Income tax relating to foreign currency translations, including the effect of net investment hedges	0		0	0
Subtotal foreign currency translation, net of tax	21		(4)	(1)
Total comprehensive income
Total other comprehensive income	21		(4)	(1)
Total other comprehensive income that will not be reclassified to the income statement, net of tax	21		(4)	(1)
Total comprehensive income	36		2	5
UBS AG
Statement Of Comprehensive Income [Line Items]
Net profit / (loss)	6,211		3,971	4,113
Net profit / (loss) attributable to shareholders	6,196		3,965	4,107
Net profit / (loss) attributable to non-controlling interests	15		6	7
Foreign currency translation
Subtotal foreign currency translation, net of tax	21		(4)	(1)
Defined benefit plans
Gains / (losses) on defined benefit plans, before tax	(222)		(129)	(70)
Income tax relating to defined benefit plans	88		(41)	245
Subtotal defined benefit plans, net of tax	(134)		(170)	175
Own credit on financial liabilities designated at fair value
Subtotal own credit on financial liabilities designated at fair value, net of tax	(293)		(392)	509
Total comprehensive income
Total other comprehensive income	1,759		785	(147)
Total other comprehensive income that may be reclassified to the income statement, net of tax	2,165		1,351	(829)
Total other comprehensive income that will not be reclassified to the income statement, net of tax	(406)		(566)	682
Total comprehensive income	7,970		4,756	3,967
UBS AG \| Comprehensive income attributable to shareholders
Statement Of Comprehensive Income [Line Items]
Net profit / (loss)	6,196		3,965	4,107
Foreign currency translation
Foreign currency translation movements related to net assets of foreign operations, before tax	2,040		199	(701)
Effective portion of changes in fair value of hedging instruments designated as net investment hedges, before tax	(938)		(144)	181
Foreign currency translation differences on foreign operations reclassified to the income statement	(7)		52	4
Effective portion of changes in fair value of hedging instruments designated as net investment hedge reclassified to the income statement	2		(14)	2
Income tax relating to foreign currency translations, including the effect of net investment hedges	(67)		(1)	(2)
Subtotal foreign currency translation, net of tax	1,030	[4]	92	(515)
Financial assets measured at fair value through other comprehensive income
Net unrealized gains / (losses), before tax	223		189	(56)
Realized gains reclassified to the income statement from equity	(40)		(33)	0
Realized losses reclassified to the income statement from equity	0		2	0
Income tax relating to net unrealized gains / (losses)	(48)		(41)	12
Subtotal financial assets measured at fair value through other comprehensive income, net of tax	136		117	(45)
Cash flow hedges of interest rate risk
Effective portion of changes in fair value of hedging instruments recognized in OCI	2,012		1,571	(42)
Net (gains) / losses reclassified to the income statement from equity	(770)		(175)	(294)
Income tax related to cash flow hedges	(231)		(253)	67
Subtotal cash flow hedges, net of tax	1,011	[5]	1,143	(269)
Cost of hedging
Change in fair value of cost of hedging, before tax	(46)
Amortization of initial cost of hedging to the income statement	33
Income tax relating to cost of hedging	0
Subtotal cost of hedging, net of tax	(13)
Defined benefit plans
Gains / (losses) on defined benefit plans, before tax	(222)	[6]	(129)	(70)
Income tax relating to defined benefit plans	88		(41)	245
Subtotal defined benefit plans, net of tax	(134)		(170)	175
Own credit on financial liabilities designated at fair value
Gains / (losses) from own credit on financial liabilities designated at fair value, before tax	(293)		(400)	517
Income tax relating to own credit on financial liabilities designated at fair value	0		8	(8)
Subtotal own credit on financial liabilities designated at fair value, net of tax	(293)		(392)	509
Total comprehensive income
Total other comprehensive income	1,738		789	(145)
Total other comprehensive income that may be reclassified to the income statement, net of tax	2,165		1,351	(829)
Total other comprehensive income that will not be reclassified to the income statement, net of tax	(427)		(562)	684
Total comprehensive income	7,934		4,754	3,961
UBS AG \| Comprehensive income attributable to non-controlling interests
Statement Of Comprehensive Income [Line Items]
Net profit / (loss)	15		6	7
Foreign currency translation
Foreign currency translation movements related to net assets of foreign operations, before tax	21		(4)	(1)
Income tax relating to foreign currency translations, including the effect of net investment hedges	0		0	0
Subtotal foreign currency translation, net of tax	21		(4)	(1)
Total comprehensive income
Total other comprehensive income	21		(4)	(1)
Total other comprehensive income that will not be reclassified to the income statement, net of tax	21		(4)	(1)
Total comprehensive income	$ 36		$ 2	$ 5

[1]	Mainly driven by the strengthening of the Swiss franc (9%) and the euro (9%) against the US dollar
[2]	Mainly reflects an increase in net unrealized gains on US dollar hedging derivatives resulting from decreases in the relevant long-term US dollar interest rates, partly offset by the reclassification of net gains on hedging instruments from OCI to the income statement as the hedged forecast cash flows affected profit or loss.
[3]	Mainly includes a net pre-tax OCI loss of USD 276 million related to the Swiss pension plan (primarily driven by an extraordinary employer contribution of USD 235 million that increased the gross plan assets, but led to an OCI loss as no net pension asset could be recognized on the balance sheet as of 31 December 2020 due to the asset ceiling) and a net pre-tax OCI loss of USD 61 million related to the UK pension plan (driven by an increase in the defined benefit obligation, mainly resulting from a lower discount rate). Refer to Note 26 for more information.
[4]	Mainly driven by the strengthening of the Swiss franc (9%) and the euro (9%) against the US dollar
[5]	Mainly reflects an increase in net unrealized gains on US dollar hedging derivatives resulting from decreases in the relevant long-term US dollar interest rates, partly offset by the reclassification of net gains on hedging instruments from OCI to the income statement as the hedged forecast cash flows affected profit or loss.
[6]	Mainly includes a net pre-tax OCI loss of USD 172 million related to the Swiss pension plan (primarily driven by an extraordinary employer contribution of USD 143 million that increased the gross plan assets, but led to an OCI loss as no net pension asset could be recognized on the balance sheet as of 31 December 2020 due to the asset ceiling) and a net pre-tax OCI loss of USD 61 million related to the UK pension plan (driven by an increase in the defined benefit obligation, mainly resulting from a lower discount rate). Refer to Note 26 for more information.

Consolidated Statement of Com_2

Consolidated Statement of Comprehensive Income (Parenthetical) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)
Statement Of Comprehensive Income [Line Items]
Change of the foreign exchange rate of the Swiss franc against the US dollar	9.00%
Change of the foreign exchange rate of the euro against the US dollar	9.00%
Gains / (losses) on defined benefit plans, before tax	$ (327)
Major plans
Statement Of Comprehensive Income [Line Items]
Gains / (losses) on defined benefit plans, before tax	(323)
Swiss pension plan
Statement Of Comprehensive Income [Line Items]
Gains / (losses) on defined benefit plans, before tax	(276)
Additional employer contributions paid to employees retirement assets	235
UK pension plan
Statement Of Comprehensive Income [Line Items]
Gains / (losses) on defined benefit plans, before tax	$ (61)
UBS AG
Statement Of Comprehensive Income [Line Items]
Change of the foreign exchange rate of the Swiss franc against the US dollar	9.00%
Change of the foreign exchange rate of the euro against the US dollar	9.00%
Gains / (losses) on defined benefit plans, before tax	$ (222)
UBS AG \| Major plans
Statement Of Comprehensive Income [Line Items]
Gains / (losses) on defined benefit plans, before tax	(219)
UBS AG \| Swiss pension plan
Statement Of Comprehensive Income [Line Items]
Gains / (losses) on defined benefit plans, before tax	(172)
Additional employer contributions paid to employees retirement assets	143
UBS AG \| UK pension plan
Statement Of Comprehensive Income [Line Items]
Gains / (losses) on defined benefit plans, before tax	$ (61)

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Assets
Cash and balances at central banks		$ 158,231	$ 107,068
Loans and advances to banks		15,444	12,447
Receivables from securities financing transactions		74,210	84,245
Cash collateral receivables on derivative instruments		32,737	23,289
Loans and advances to customers		379,528	326,786
Other financial assets measured at amortized cost		27,194	22,980
Total financial assets measured at amortized cost		687,345	576,815
Financial assets at fair value held for trading		125,397	127,514
of which: assets pledged as collateral that may be sold or repledged by counterparties		47,098	41,285
Derivative financial instruments	[1]	159,617	121,841
Brokerage receivables		24,659	18,007
Financial assets at fair value not held for trading	[2]	80,364	83,944
Total financial assets measured at fair value through profit or loss		390,037	351,307
Financial assets measured at fair value through other comprehensive income	[3]	8,258	6,345
Investments in associates		1,557	1,051
Property, equipment and software		13,109	12,804
Goodwill and intangible assets		6,480	6,469
Deferred tax assets	[4]	9,212	9,548	[5]
Other non-financial assets		9,768	7,856
Total assets		1,125,765	972,194	[6]
Liabilities
Amounts due to banks		11,050	6,570
Payables from securities financing transactions		6,321	7,778
Cash collateral payables on derivative instruments		37,312	31,415
Customer deposits		524,605	448,284
Debt issued measured at amortized cost	[7]	139,232	110,497
Other financial liabilities measured at amortized cost		9,729	9,712
Total financial liabilities measured at amortized cost		728,250	614,256
Financial liabilities at fair value held for trading	[8],[9],[10]	33,595	30,591
Derivative financial instruments	[1],[8],[10],[11]	161,102	120,880
Brokerage payables designated at fair value		38,742	37,233
Debt issued designated at fair value		61,243	66,809
Other financial liabilities designated at fair value		30,387	35,940
Total financial liabilities measured at fair value through profit or loss		325,069	291,452
Provisions		2,828	2,974
Other non-financial liabilities		9,854	8,837
Total liabilities		1,066,000	917,519
Equity
Share capital		338	338
Share premium		16,753	18,064
Treasury shares		(4,068)	(3,326)
Retained earnings		38,776	34,122
Other comprehensive income recognized directly in equity, net of tax		7,647	5,303
Equity attributable to shareholders		59,445	54,501
Equity attributable to non-controlling interests		319	174
Total equity		59,765	54,675	[12]
Total liabilities and equity		1,125,765	972,194
UBS AG
Assets
Cash and balances at central banks		158,231	107,068
Loans and advances to banks		15,344	12,379
Receivables from securities financing transactions		74,210	84,245
Cash collateral receivables on derivative instruments		32,737	23,289
Loans and advances to customers		380,977	327,992
Other financial assets measured at amortized cost		27,219	23,012
Total financial assets measured at amortized cost		688,717	577,985
Financial assets at fair value held for trading		125,492	127,695
of which: assets pledged as collateral that may be sold or repledged by counterparties		47,098	41,285
Derivative financial instruments	[13]	159,618	121,843
Brokerage receivables		24,659	18,007
Financial assets at fair value not held for trading	[2]	80,038	83,636
Total financial assets measured at fair value through profit or loss		389,808	351,181
Financial assets measured at fair value through other comprehensive income	[3]	8,258	6,345
Investments in associates		1,557	1,051
Property, equipment and software		11,958	11,826
Goodwill and intangible assets		6,480	6,469
Deferred tax assets	[4]	9,174	9,524	[14]
Other non-financial assets		9,374	7,547
Total assets		1,125,327	971,927	[6]
Liabilities
Amounts due to banks		11,050	6,570
Payables from securities financing transactions		6,321	7,778
Cash collateral payables on derivative instruments		37,313	31,416
Customer deposits		527,929	450,591
Funding from UBS Group AG and its subsidiaries	[15],[16]	53,979	47,866
Debt issued measured at amortized cost	[7]	85,351	62,835
Other financial liabilities measured at amortized cost		10,421	10,373
Total financial liabilities measured at amortized cost		732,364	617,429
Financial liabilities at fair value held for trading	[8],[9],[10]	33,595	30,591
Derivative financial instruments	[8],[10],[11],[13]	161,102	120,880
Brokerage payables designated at fair value		38,742	37,233
Debt issued designated at fair value		59,868	66,592
Other financial liabilities designated at fair value		31,773	36,157
Total financial liabilities measured at fair value through profit or loss		325,080	291,452
Provisions		2,791	2,938
Other non-financial liabilities		7,018	6,211	[14]
Total liabilities		1,067,254	918,031
Equity
Share capital		338	338
Share premium		24,580	24,659
Retained earnings		25,251	23,419
Other comprehensive income recognized directly in equity, net of tax		7,585	5,306
Equity attributable to shareholders		57,754	53,722
Equity attributable to non-controlling interests		319	174
Total equity		58,073	53,896
Total liabilities and equity		$ 1,125,327	$ 971,927

[1]	Derivative financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of the entity and all of the counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. Refer to Note 22 for more information on netting arrangements.
[2]	Refer to Note 24c for more information on product type and fair value hierarchy categorization.
[3]	Refer to Note 21c for more information about product type and fair value hierarchy categorization. Refer also to Note 9 and Note 20 for more information about expected credit loss measurement.
[4]	Less deferred tax liabilities as applicable.
[5]	Comparative-period information has been restated. Refer to Note 1b for more information
[6]	Information has been restated where applicable. Refer to Note 1b for more information.
[7]	Net of bifurcated embedded derivatives, the fair value of which was not material for the periods presented.
[8]	Carrying amount is fair value. Management believes that this best represents the cash flows that would have to be paid if these positions had to be settled or closed out.
[9]	Contractual maturities of financial liabilities at fair value held for trading are: USD 32.6 billion due within 1 month (2019: USD 30 billion), USD 1.0 billion due between 1 month and 1 year (2019: USD 0.6 billion) and USD 0 billion due between 1 and 5 years (2019: USD 0 billion). 5 Includes USD 32 million (2019: 0 million) related to fair values of derivative loan commitments and forward starting reverse repurchase agreements classified as derivatives, presented within “Due within 1 month”. The full contractual committed amount of USD 31.3 billion (2019: USD 26.6 billion) is presented in Note 10 under notional amounts.
[10]	Except for financial liabilities at fair value held for trading and derivative financial instruments (see footnote 3), the amounts presented generally represent undiscounted cash flows of future interest and principal payments
[11]	Includes USD 32 million (2019: 0 million) related to fair values of derivative loan commitments and forward starting reverse repurchase agreements classified as derivatives, presented within “Due within 1 month”. The full contractual committed amount of USD 31.3 billion (2019: USD 26.6 billion) is presented in Note 10 under notional amounts.
[12]	Refer to the “Accounting and financial reporting” and “Consolidated financial statements” sections of this report for information on the restatement of comparative information, where applicable
[13]	Financial assets and liabilities are presented net on the balance sheet if UBS AG has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of the entity and all of the counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. Refer to Note 25 for more information on netting arrangements.
[14]	Comparative-period information has been restated. Refer to Note 1b for more information.
[15]	Represents funding from UBS Group AG to UBS AG.
[16]	UBS AG has also recognized funding from UBS Group AG and its subsidiaries that is designated at fair value. Refer to Note 19b for more information.

Consolidated Statement of Chang

Consolidated Statement of Changes in Equity - USD ($) $ in Millions		Total		Share capital	Share premium		Treasury shares		Retained earnings		Other comprehensive income recognized directly in equity, net of tax	[1]	of which: foreign currency translation	of which: financial assets at fair value through other comprehensive income	of which: cash flow hedges	of which: cost of hedging	Total equity attributable to shareholders	Non-controlling interests	UBS AG	UBS AGShare capital	UBS AGShare premium		UBS AGRetained earnings	UBS AGOther comprehensive income recognized directly in equity, net of tax	[1]	UBS AGof which: foreign currency translation	UBS AGof which: financial assets at fair value through other comprehensive income	UBS AGof which: cash flow hedges	UBS AGof which: cost of hedging	UBS AGTotal equity attributable to shareholders	UBS AGNon-controlling interests
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement		$ 52,554		$ 338	$ 23,598		$ (2,210)		$ 25,932		$ 4,838		$ 4,466	$ 13	$ 360		$ 52,495	$ 59	$ 52,046	$ 338	$ 24,633		$ 22,189	$ 4,828		$ 4,455	$ 13	$ 360		$ 51,987	$ 59
Balance before the adoption of IFRIC 23 at Dec. 31, 2017		51,906		338	23,598		(2,210)		25,357		4,764		4,466	(61)	360		51,847	59	51,397	338	24,633		21,614	4,754		4,455	(61)	360		51,338	59
Issuance of share capital		0		0													0		0											0
Acquisition of treasury shares		(1,608)					(1,608)	[2]									(1,608)
Delivery of treasury shares under share-based compensation plans		128			(1,009)		1,137										128
Other disposal of treasury shares		50					50	[2]									50
Premium on shares issued and warrants exercised		22			22												22		34		34									34
Share-based compensation expensed in the income statement		676			676												676
Tax (expense) / benefit		4			4												4		(5)		(5)									(5)
Dividends		(2,450)			(2,440)	[3]											(2,440)	(10)	(3,108)				(3,098)							(3,098)	(10)
Translation effects recognized directly in retained earnings		0							(21)		21			3	18		0		0				(21)	21			3	18		0
New consolidations / (deconsolidations) and other increases / (decreases)		115			(7)												(7)	122	115		(7)									(7)	122
Total comprehensive income for the year		4,231							5,080		(855)		(541)	(45)	(269)		4,225	5	3,967				4,790	(829)		(515)	(45)	(269)		3,961	5
of which: net profit / (loss)		4,522							4,516								4,516	7	4,113				4,107							4,107	7
of which: other comprehensive income (OCI) that may be reclassified to the income statement, net of tax		(855)									(855)		(541)	(45)	(269)		(855)		(829)					(829)		(515)	(45)	(269)		(829)
of which: OCI that will not be reclassified to the income statement, net of tax - defined benefit plans		56							56								56		175				175							175
of which: OCI that will not be reclassified to the income statement, net of tax - own credit		509							509								509		509				509							509
of which: OCI that will not be reclassified to the income statement, net of tax - foreign currency translation		(1)															0	(1)	(1)											0	(1)
Balance before the adoption of IFRIC 23 at Dec. 31, 2018		53,071		338	20,843		(2,631)		30,416		3,930		3,924	(103)	109		52,896	176	52,400	338	24,655		23,285	3,946		3,940	(103)	109		52,224	176
Balance at Dec. 31, 2018		53,060		338	20,843		(2,631)		30,405		3,930		3,924	(103)	109		52,885	176	52,389	338	24,655		23,274	3,946		3,940	(103)	109		52,213	176
Issuance of share capital		0		0													0		0											0
Acquisition of treasury shares		(1,771)					(1,771)	[2]									(1,771)
Delivery of treasury shares under share-based compensation plans		97			(886)		983										97
Other disposal of treasury shares		92			(2)		94	[2]									92
Premium on shares issued and warrants exercised		29			29												29		0		0									0
Share-based compensation expensed in the income statement		619			619												619
Tax (expense) / benefit		11			11												11		11		11									11
Dividends		(2,552)			(2,544)	[3]											(2,544)	(8)	(3,258)				(3,250)							(3,250)	(8)
Translation effects recognized directly in retained earnings		0							(9)		9			0	9		0		0				(9)	9			0	9		0
New consolidations / (deconsolidations) and other increases / (decreases)		(1)			(6)												(6)	5	(3)		(7)									(7)	5
Total comprehensive income for the year		5,091							3,726		1,363		104	117	1,143		5,089	2	4,756				3,403	1,351		92	117	1,143		4,754	2
of which: net profit / (loss)		4,310							4,304								4,304	6	3,971				3,965							3,965	6
of which: other comprehensive income (OCI) that may be reclassified to the income statement, net of tax		1,363									1,363		104	117	1,143		1,363		1,351					1,351		92	117	1,143		1,351
of which: OCI that will not be reclassified to the income statement, net of tax - defined benefit plans		(186)							(186)								(186)		(170)				(170)							(170)
of which: OCI that will not be reclassified to the income statement, net of tax - own credit		(392)							(392)								(392)		(392)				(392)							(392)
of which: OCI that will not be reclassified to the income statement, net of tax - foreign currency translation		(4)															0	(4)	(4)											0	(4)
Balance at Dec. 31, 2019		54,675	[4]	338	18,064		(3,326)		34,122		5,303		4,028	14	1,260		54,501	174	53,896	338	24,659		23,419	5,306		4,032	14	1,260		53,722	174
Issuance of share capital		0															0		0											0
Acquisition of treasury shares		(1,584)					(1,584)	[2]									(1,584)
Delivery of treasury shares under share-based compensation plans		90			(628)		719										90
Other disposal of treasury shares		112			(11)		123	[2]									112
Premium on shares issued and warrants exercised		0															0		(4)		(4)	[5]								(4)
Share-based compensation expensed in the income statement		691			691	[6]											691
Tax (expense) / benefit		18			18												18		1		1									1
Dividends		(2,613)			(1,304)	[3]			(1,304)	[3]							(2,607)	(6)	(3,854)				(3,848)							(3,848)	(6)
Translation effects recognized directly in retained earnings		0							(49)		49			0	49		0		0				(49)	49			0	49		0
Share of changes in retained earnings of associates and joint ventures		(40)							(40)								(40)		(40)				(40)							(40)
New consolidations / (deconsolidations) and other increases / (decreases)	[7]	103			(76)						65		65				(12)	115	103		(76)			65		65				(12)	115
Total comprehensive income for the year		8,312							6,046		2,230		1,095	136	1,011	$ (13)	8,276	36	7,970				5,769	2,165		1,030	136	1,011	$ (13)	7,934	36
of which: net profit / (loss)		6,572							6,557								6,557	15	6,211				6,196							6,196	15
of which: other comprehensive income (OCI) that may be reclassified to the income statement, net of tax		2,230									2,230		1,095	136	1,011	(13)	2,230		2,165					2,165		1,030	136	1,011	(13)	2,165
of which: OCI that will not be reclassified to the income statement, net of tax - defined benefit plans		(218)							(218)								(218)		(134)				(134)							(134)
of which: OCI that will not be reclassified to the income statement, net of tax - own credit		(293)							(293)								(293)		(293)				(293)							(293)
of which: OCI that will not be reclassified to the income statement, net of tax - foreign currency translation		21															0	21	21											0	21
Balance at Dec. 31, 2020		$ 59,765		$ 338	$ 16,753		$ (4,068)		$ 38,776		$ 7,647		$ 5,188	$ 151	$ 2,321	$ (13)	$ 59,445	$ 319	$ 58,073	$ 338	$ 24,580		$ 25,251	$ 7,585		$ 5,126	$ 151	$ 2,321	$ (13)	$ 57,754	$ 319

[1]	Excludes other comprehensive income related to defined benefit plans and own credit, which is recorded directly in Retained earnings
[2]	Includes treasury shares acquired and disposed of by the Investment Bank in its capacity as a market-maker with regard to UBS shares and related derivatives, and to hedge certain issued structured debt instruments. These acquisitions and disposals are reported based on the sum of the net monthly movements.
[3]	Reflects the payment of an ordinary cash dividend of USD 0.73 (2019: CHF 0.70, 2018: CHF 0.65) per dividend-bearing share. From 2020 onward, Swiss tax law effective 1 January 2020 requires that Switzerland-domiciled companies with shares listed on a stock exchange pay no more than 50% of dividends from capital contribution reserves, with the remainder required to be paid from retained earnings.
[4]	Refer to the “Accounting and financial reporting” and “Consolidated financial statements” sections of this report for information on the restatement of comparative information, where applicable
[5]	Includes decreases related to recharges by UBS Group AG for share-based compensation awards granted to employees of UBS AG or its subsidiaries.
[6]	During 2020, UBS modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees, resulting in an increase of approximately USD 110 million in share premium for equity-settled awards. Refer to Note 1b for more information.
[7]	Mainly relates to the establishment of a banking partnership with Banco do Brasil. Refer to Note 29 for more information.

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Equity (Parenthetical) $ in Millions		Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2020USD ($)SFr / shares		Dec. 31, 2019USD ($)SFr / shares		Dec. 31, 2018USD ($)SFr / shares
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			$ 52,554
Effect of adoption of IFRS 9			(591)
Effect of adoption of IFRS 15			(25)
Effect of retained earnings restatement	[1]		(32)
Effect of adoption of IFRIC 23		$ (11)
Retained earnings		30,416		$ 38,776		$ 34,122		$ 30,416
Compensation-related liabilities		7,321		7,468	[2],[3]	6,855	[2],[3]	7,321
Deferred tax assets		10,116		$ 9,212	[4]	$ 9,548	[4],[5]	$ 10,116
Ordinary cash dividends paid, ordinary shares per share \| SFr / shares				$ 0.73		$ 0.7		$ 0.65
Maximum percentage of dividends that may be paid from capital contribution reserves				50.00%
Effect
Retained earnings		(32)				$ (32)		$ (32)
Compensation-related liabilities		43				43		43
Deferred tax assets		11				11		11
Increase (decrease) due to modification of deferred compensation awards
Compensation-related liabilities				$ 170
Increase (decrease) due to modification of deferred compensation awards, as of third quarter 2020
Compensation-related liabilities				212
Share capital
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			338
Share premium
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			23,598
Treasury shares
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			(2,210)
Retained earnings
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			25,932
Effect of adoption of IFRS 9			(518)
Effect of adoption of IFRS 15			(25)
Effect of retained earnings restatement	[1]		(32)
Effect of adoption of IFRIC 23		(11)
Other comprehensive income recognized directly in equity, net of tax
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement	[6]		4,838
Effect of adoption of IFRS 9	[6]		(74)
of which: foreign currency translation
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			4,466
of which: financial assets at fair value through other comprehensive income
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			13
Effect of adoption of IFRS 9			(74)
of which: cash flow hedges
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			360
Total equity attributable to shareholders
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			52,495
Effect of adoption of IFRS 9			(591)
Effect of adoption of IFRS 15			(25)
Effect of retained earnings restatement	[1]		(32)
Effect of adoption of IFRIC 23		(11)
Non-controlling interests
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			59
UBS AG
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			52,046
Effect of adoption of IFRS 9			(591)
Effect of adoption of IFRS 15			(25)
Effect of retained earnings restatement	[1]		(32)
Effect of adoption of IFRIC 23		(11)
Retained earnings		23,285		25,251		23,419		23,285
Compensation-related liabilities		4,688		4,776	[2]	4,339	[2]	4,688
Deferred tax assets		10,077		9,174	[4]	9,524	[4],[7]	10,077
UBS AG \| Effect
Retained earnings		(32)				(32)		(32)
Compensation-related liabilities		43				43		43
Deferred tax assets		11				$ 11		$ 11
UBS AG \| Increase (decrease) due to modification of deferred compensation awards
Compensation-related liabilities				270
UBS AG \| Increase (decrease) due to modification of deferred compensation awards, as of third quarter 2020
Compensation-related liabilities				$ 342
UBS AG \| Share capital
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			338
UBS AG \| Share premium
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			24,633
UBS AG \| Retained earnings
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			22,189
Effect of adoption of IFRS 9			(518)
Effect of adoption of IFRS 15			(25)
Effect of retained earnings restatement	[1]		(32)
Effect of adoption of IFRIC 23		(11)
UBS AG \| Other comprehensive income recognized directly in equity, net of tax
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement	[6]		4,828
Effect of adoption of IFRS 9	[6]		(74)
UBS AG \| of which: foreign currency translation
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			4,455
UBS AG \| of which: financial assets at fair value through other comprehensive income
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			13
Effect of adoption of IFRS 9			(74)
UBS AG \| of which: cash flow hedges
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			360
UBS AG \| Total equity attributable to shareholders
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			51,987
Effect of adoption of IFRS 9			(591)
Effect of adoption of IFRS 15			(25)
Effect of retained earnings restatement	[1]		(32)
Effect of adoption of IFRIC 23		$ (11)
UBS AG \| Non-controlling interests
Balance before the adoption of IFRS 9 and IFRS 15 and retained earnings restatement			$ 59

[1]	Opening retained earnings as of 1 January 2018 have been restated to reflect a reduction of USD 32 million in connection with the retrospective recognition of a USD 43 million increase in compensation-related liabilities and an USD 11 million increase in deferred tax assets. Refer to Note 1b for more information.
[2]	Comparative-period information has been restated. Refer to Note 1b for more information.
[3]	In 2020, UBS modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees. Refer to Note 1b for more information
[4]	Less deferred tax liabilities as applicable.
[5]	Comparative-period information has been restated. Refer to Note 1b for more information
[6]	Excludes other comprehensive income related to defined benefit plans and own credit, which is recorded directly in Retained earnings
[7]	Comparative-period information has been restated. Refer to Note 1b for more information.

Share information and earnings

Share information and earnings per share - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Shares issued
Balance at the beginning of the year		3,859,055,395	3,855,634,749	3,853,096,603
Issuance of shares			3,420,646	2,538,146
Balance at the end of the year		3,859,055,395	3,859,055,395	3,855,634,749
Treasury shares
Balance at the beginning of the year		243,021,296	166,467,802	132,301,550
Acquisitions		128,372,257	146,876,692	103,979,927
Disposals		(63,916,551)	(70,323,198)	(69,813,675)
Balance at the end of the year		307,477,002	243,021,296	166,467,802
Shares outstanding		3,551,578,393	3,616,034,099	3,689,166,947
Basic and diluted earnings
Net profit / (loss) attributable to shareholders		$ 6,557	$ 4,304	$ 4,516
Less: (profit) / loss on own equity derivative contracts		(1)	0	(2)
Net profit / (loss) attributable to shareholders for diluted EPS		$ 6,556	$ 4,304	$ 4,514
Weighted average shares outstanding
Weighted average shares outstanding for basic EPS	[1]	3,583,176,189	3,663,278,238	3,730,297,877
Effect of dilutive potential shares resulting from notional shares, in-the-money options and warrants outstanding	[2]	123,852,137	103,881,600	111,271,269
Weighted average shares outstanding for diluted EPS		3,707,028,326	3,767,159,838	3,841,569,146
Earnings per share
Basic		$ 1.83	$ 1.17	$ 1.21
Diluted		$ 1.77	$ 1.14	$ 1.18
Potentially dilutive instruments
Employee share-based compensation awards	[3]	2,536,789		3,605,198
Other equity derivative contracts	[3]	11,414,728	21,632,879	11,912,450
Total	[3]	13,951,517	21,632,879	15,517,648
UBS AG
Shares issued
Balance at the beginning of the year		3,858,408,466
Balance at the end of the year		3,858,408,466	3,858,408,466
Basic and diluted earnings
Net profit / (loss) attributable to shareholders		$ 6,196	$ 3,965	$ 4,107

[1]	The weighted average shares outstanding for basic EPS are calculated by taking the number of shares at the beginning of the period, adjusted by the number of shares acquired or issued during the period, multiplied by a time-weighted factor for the period outstanding. As a result, balances are affected by the timing of acquisitions and issuances during the period
[2]	The weighted average number of shares for notional employee awards with performance conditions reflects all potentially dilutive shares that are expected to vest under the terms of the awards.
[3]	Reflects potential shares that could dilute basic earnings per share in the future, but were not dilutive for the periods presented.

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flow from / (used in) operating activities
Net profit / (loss)		$ 6,572	$ 4,310	$ 4,522
Non-cash items included in net profit and other adjustments:
Depreciation and impairment of property, equipment and software		2,069	1,765	1,228
Amortization and impairment of goodwill and intangible assets		57	175	65
Credit loss expense / (release)		694	78	118
Share of net profits of associates / joint ventures and impairment of associates		(84)	(45)	(528)
Deferred tax expense / (benefit)		352	477	425
Net loss / (gain) from investing activities		(698)	220	(46)
Net loss / (gain) from financing activities		3,246	6,493	(4,828)
Other net adjustments		(8,076)	854	(1,179)
Net change in operating assets and liabilities:
Loans and advances to banks / amounts due to banks		3,586	(4,336)	3,504
Securities financing transactions		9,588	8,678	(11,230)
Cash collateral on derivative instruments		(3,487)	2,839	(1,447)
Loans and advances to customers		(33,656)	(3,128)	(5,213)
Customer deposits		51,805	23,217	9,138
Financial assets and liabilities at fair value held for trading and derivative financial instruments		11,259	(18,829)	11,107
Brokerage receivables and payables		(5,199)	(2,347)	11,432
Financial assets at fair value not held for trading, other financial assets and liabilities		320	33	11,115
Provisions, other non-financial assets and liabilities		(387)	55	1,682
Income taxes paid, net of refunds		(1,002)	(804)	(951)
Net cash flow from / (used in) operating activities		36,958	19,705	28,913
Cash flow from / (used in) investing activities
Purchase of subsidiaries, associates and intangible assets		(46)	(26)	(287)
Disposal of subsidiaries, associates and intangible assets	[1]	674	114	137
Purchase of property, equipment and software		(1,854)	(1,584)	(1,688)
Disposal of property, equipment and software		366	11	114
Purchase of financial assets measured at fair value through other comprehensive income		(6,290)	(3,424)	(1,999)
Disposal and redemption of financial assets measured at fair value through other comprehensive income		4,530	3,913	1,361
Net (purchase) / redemption of debt securities measured at amortized cost		(4,166)	(562)	(3,770)
Net cash flow from / (used in) investing activities		(6,785)	(1,558)	(6,132)
Cash flow from / (used in) financing activities
Net short-term debt issued / (repaid)		23,845	(17,149)	(12,245)
Net movements in treasury shares and own equity derivative activity		(1,387)	(1,559)	(1,431)
Distributions paid on UBS shares		(2,607)	(2,544)	(2,440)
Repayment of lease liabilities		(569)	(518)
Issuance of long-term debt, including debt issued designated at fair value		80,255	65,047	60,682
Repayment of long-term debt, including debt issued designated at fair value		(87,098)	(68,883)	(44,344)
Net changes in non-controlling interests		(6)	(8)	(31)
Net cash flow from / (used in) financing activities		12,432	(25,614)	190
Total cash flow
Cash and cash equivalents at the beginning of the year	[2]	119,873	126,079	104,834
Net cash flow from / (used in) operating, investing and financing activities		42,605	(7,467)	22,971
Effects of exchange rate differences on cash and cash equivalents		11,052	1,261	(1,726)
Cash and cash equivalents at the end of the year	[2]	173,531	119,873	126,079
Net cash flow from / (used in) operating activities includes:
Interest received in cash		11,915	15,315	14,645
Interest paid in cash		6,320	10,769	9,206
Dividends on equity investments, investment funds and associates received in cash	[3]	1,901	3,145	2,322
UBS AG
Cash flow from / (used in) operating activities
Net profit / (loss)		6,211	3,971	4,113
Non-cash items included in net profit and other adjustments:
Depreciation and impairment of property, equipment and software		1,851	1,576	1,052
Amortization and impairment of goodwill and intangible assets		57	175	65
Credit loss expense / (release)		695	78	117
Share of net profits of associates / joint ventures and impairment of associates		(84)	(45)	(528)
Deferred tax expense / (benefit)		355	460	374
Net loss / (gain) from investing activities		(698)	220	(49)
Net loss / (gain) from financing activities		3,246	6,506	(4,829)
Other net adjustments		(8,061)	862	(1,092)
Net change in operating assets and liabilities:
Loans and advances to banks / amounts due to banks		3,586	(4,336)	3,504
Securities financing transactions		9,588	8,678	(11,230)
Cash collateral on derivative instruments		(3,486)	2,842	(1,449)
Loans and advances to customers		(33,897)	(3,205)	(4,152)
Customer deposits		52,831	23,399	7,931
Financial assets and liabilities at fair value held for trading and derivative financial instruments		11,326	(18,873)	11,093
Brokerage receivables and payables		(5,199)	(2,347)	11,432
Financial assets at fair value not held for trading, other financial assets and liabilities		392	126	10,902
Provisions, other non-financial assets and liabilities		(1,213)	(537)	1,377
Income taxes paid, net of refunds		(919)	(741)	(888)
Net cash flow from / (used in) operating activities		36,581	18,805	27,744
Cash flow from / (used in) investing activities
Purchase of subsidiaries, associates and intangible assets		(46)	(26)	(287)
Disposal of subsidiaries, associates and intangible assets	[1]	674	114	137
Purchase of property, equipment and software		(1,573)	(1,401)	(1,473)
Disposal of property, equipment and software		364	11	114
Purchase of financial assets measured at fair value through other comprehensive income		(6,290)	(3,424)	(1,999)
Disposal and redemption of financial assets measured at fair value through other comprehensive income		4,530	3,913	1,361
Net (purchase) / redemption of debt securities measured at amortized cost		(4,166)	(562)	(3,770)
Net cash flow from / (used in) investing activities		(6,506)	(1,374)	(5,918)
Cash flow from / (used in) financing activities
Net short-term debt issued / (repaid)		23,845	(17,149)	(12,245)
Distributions paid on UBS shares		(3,848)	(3,250)	(3,098)
Repayment of lease liabilities		(547)	496
Issuance of long-term debt, including debt issued designated at fair value		72,273	59,199	54,726
Repayment of long-term debt, including debt issued designated at fair value		(83,825)	(68,883)	(44,344)
Funding from UBS Group AG and its subsidiaries		4,606	5,848	5,956
Net changes in non-controlling interests		(6)	(8)	(31)
Net cash flow from / (used in) financing activities		12,498	(24,738)	963
Total cash flow
Cash and cash equivalents at the beginning of the year	[4]	119,804	125,853	104,787
Net cash flow from / (used in) operating, investing and financing activities		42,573	(7,307)	22,789
Effects of exchange rate differences on cash and cash equivalents		11,053	1,258	(1,722)
Cash and cash equivalents at the end of the year	[4]	173,430	119,804	125,853
Net cash flow from / (used in) operating activities includes:
Interest received in cash		11,929	15,344	14,666
Interest paid in cash		6,414	10,800	9,372
Dividends on equity investments, investment funds and associates received in cash	[3]	$ 1,901	$ 3,145	$ 2,322

[1]	Includes cash proceeds from the sale of the majority stake in Fondcenter AG of USD 426 million for the year ended 31 December 2020. Refer to Note 29 for more information. Also includes dividends received from associates
[2]	USD 3,828 million, USD 3,192 million and USD 5,245 million of cash and cash equivalents (mainly reflected in Loans and advances to banks) were restricted as of 31 December 2020, 31 December 2019 and 31 December 2018, respectively. Refer to Note 23 for more information.
[3]	Includes dividends received from associates reported within Net cash flow from / (used in) investing activities.
[4]	USD 3,828 million, USD 3,192 million and USD 5,245 million of cash and cash equivalents (mainly reflected in Loans and advances to banks) were restricted as of 31 December 2020, 31 December 2019 and 31 December 2018, respectively. Refer to Note 23 for more information.

Consolidated Statement ot Cash

Consolidated Statement ot Cash Flows (Parenthetical) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement Of Cash Flows [Line Items]
Restricted cash and cash equivalents		$ 3,828	$ 3,192	$ 5,245
Money market paper in financial assets at fair value held for trading		117	235	366
Money market paper in financial assets measured at fair value through other comprehensive income		178	24	8
Money market paper in financial assets at fair value not held for trading		536	920	1,556
Money market paper in other financial assets measured at amortized cost		584	351	204
Cash and balances at central banks classified as cash equivalents	[1]	158,088	106,957	108,268
Loans and advances to banks classified as cash equivalents		14,028	11,386	15,678
Money market paper classified as cash equivalents	[2]	1,415	1,530	2,133
Disposal of subsidiaries, associates and intangible assets	[3]	674	114	137
Clearstream Fund Centre AG
Statement Of Cash Flows [Line Items]
Disposal of subsidiaries, associates and intangible assets		426
UBS AG
Statement Of Cash Flows [Line Items]
Restricted cash and cash equivalents		3,828	3,192	5,245
Money market paper in financial assets at fair value held for trading		117	235	366
Money market paper in financial assets measured at fair value through other comprehensive income		178	24	8
Money market paper in financial assets at fair value not held for trading		536	920	1,556
Money market paper in other financial assets measured at amortized cost		584	351	204
Cash and balances at central banks classified as cash equivalents	[1]	158,088	106,957	108,268
Loans and advances to banks classified as cash equivalents		13,928	11,317	15,452
Money market paper classified as cash equivalents	[4]	1,415	1,530	2,133
Disposal of subsidiaries, associates and intangible assets	[3]	674	$ 114	$ 137
UBS AG \| Clearstream Fund Centre AG
Statement Of Cash Flows [Line Items]
Disposal of subsidiaries, associates and intangible assets		$ 426

[1]	Includes only balances with an original maturity of three months or less.
[2]	Money market paper is included in the balance sheet under Financial assets at fair value held for trading (31 December 2020: USD 117 million; 31 December 2019: USD 235 million; 31 December 2018: USD 366 million), Financial assets measured at fair value through other comprehensive income (31 December 2020: USD 178 million; 31 December 2019: USD 24 million; 31 December 2018: USD 8 million), Financial assets at fair value not held for trading (31 December 2020: USD 536 million; 31 December 2019: USD 920 million; 31 December 2018: USD 1,556 million) and Other financial assets measured at amortized cost (31 December 2020: USD 584 million; 31 December 2019: USD 351 million; 31 December 2018: USD 204 million).
[3]	Includes cash proceeds from the sale of the majority stake in Fondcenter AG of USD 426 million for the year ended 31 December 2020. Refer to Note 29 for more information. Also includes dividends received from associates
[4]	Money market paper is included in the balance sheet under Financial assets at fair value held for trading (31 December 2020: USD 117 million; 31 December 2019: USD 235 million; 31 December 2018: USD 366 million), Financial assets measured at fair value through other comprehensive income (31 December 2020: USD 178 million; 31 December 2019: USD 24 million; 31 December 2018: USD 8 million), Financial assets at fair value not held for trading (31 December 2020: USD 536 million; 31 December 2019: USD 920 million; 31 December 2018: USD 1,556 million) and Other financial assets measured at amortized cost (31 December 2020: USD 584 million; 31 December 2019: USD 351 million; 31 December 2018: USD 204 million).

Changes in liabilities arising

Changes in liabilities arising from financing activities - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2019
Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Line Items]
Cash flows		$ 17,002	$ (20,985)
Non-cash changes		6,207	8,560
of which: foreign currency translation		6,824	(270)
of which: fair value changes		(1,946)	7,424
of which: other	[1]	1,328	1,406
Balance		202,535	179,327	$ 191,752
Debt issued measured at amortized cost
Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Line Items]
Cash flows		22,428	(22,704)
Non-cash changes		6,308	930
of which: foreign currency translation		4,980	(476)
of which: other	[1]	1,328	1,406
Balance		139,232	110,497	132,271
of which: short-term
Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Line Items]
Cash flows		23,845	(17,149)
Non-cash changes		984	(39)
of which: foreign currency translation		984	(39)
Balance		46,666	21,837	39,025
of which: long-term
Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Line Items]
Cash flows		(1,417)	(5,555)
Non-cash changes		5,324	969
of which: foreign currency translation		3,995	(438)
of which: other	[1]	1,328	1,406
Balance		92,566	88,660	93,246
Debt issued designated at fair value
Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Line Items]
Cash flows		(5,420)	2,144
Non-cash changes		(146)	7,634
of which: foreign currency translation		1,764	212
of which: fair value changes		(1,909)	7,421
Balance		61,243	66,809	57,031
Over-the-counter debt instruments
Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Line Items]
Cash flows	[2]	(6)	(425)
Non-cash changes	[2]	44	(3)
of which: foreign currency translation	[2]	81	(6)
of which: fair value changes	[2]	(37)	3
Balance	[2]	2,060	2,022	2,450
UBS AG
Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Line Items]
Cash flows		16,899	(20,985)
Non-cash changes		6,203	8,588
of which: foreign currency translation		6,825	(270)
of which: fair value changes		(1,946)	7,424
of which: other	[3]	1,324	1,434
Balance		202,633	179,531	191,928
UBS AG \| Debt issued measured at amortized cost
Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Line Items]
Cash flows		18,722	(28,355)
Non-cash changes		3,794	(55)
of which: foreign currency translation		3,589	(346)
of which: other	[3]	205	291
Balance		85,351	62,835	91,245
UBS AG \| of which: short-term
Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Line Items]
Cash flows		23,845	(17,149)
Non-cash changes		984	(39)
of which: foreign currency translation		984	(39)
Balance		46,666	21,837	39,025
UBS AG \| of which: long-term
Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Line Items]
Cash flows		(5,123)	(11,206)
Non-cash changes		2,810	(16)
of which: foreign currency translation		2,605	(307)
of which: other	[3]	205	291
Balance		38,685	40,998	52,220
UBS AG \| Debt issued designated at fair value
Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Line Items]
Cash flows		(6,423)	1,947
Non-cash changes		(301)	7,614
of which: foreign currency translation		1,760	210
of which: fair value changes		(2,061)	7,404
Balance		59,868	66,592	57,031
UBS AG \| Over-the-counter debt instruments
Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Line Items]
Cash flows	[4]	(6)	(425)
Non-cash changes	[4]	44	(3)
of which: foreign currency translation	[4]	82	(6)
of which: fair value changes	[4]	(38)	3
Balance	[4]	2,060	2,022	2,450
UBS AG \| Funding from UBS Group AG and its subsidiaries
Disclosure Of Reconciliation Of Liabilities Arising From Financing Activities [Line Items]
Cash flows	[5]	4,606	5,848
Non-cash changes	[5]	2,666	1,033
of which: foreign currency translation	[5]	1,395	(128)
of which: fair value changes	[5]	152	17
of which: other	[3],[5]	1,119	1,144
Balance	[5]	$ 55,354	$ 48,083	$ 41,202

[1]	Includes the effect of fair value hedges on long-term debt. Refer to Note 1a item 2j and Note 17 for more information
[2]	Included in balance sheet line Other financial liabilities designated at fair value.
[3]	Includes the effect of fair value hedges on long-term debt. Refer to Note 1a item 2j and Note 17 for more information
[4]	Included in balance sheet line Other financial liabilities designated at fair value.
[5]	Includes funding from UBS Group AG and its subsidiaries measured at amortized cost (refer to Note 15b) and measured at fair value (refer to Note 19b).

Share information; Earnings per

Share information; Earnings per share	12 Months Ended
Share information; Earnings per share	Dec. 31, 2020
Disclosure Of Classes Of Share Capital [Line Items]
Share capital	Share information and earnings per share Ordinary share capital As of 31 December 20 20 , UBS Group AG had 3,859,055,395 issued shares with a nominal value of CHF 0.10 each , leading to a share capital of CHF 385,905,539.50. Conditional share capital As of 31 December 20 20 , the following conditional share capital was available to UBS Group AG’s Board of Directors (BoD): – A maxi mum of CHF 38,000,000 represented by up to 380,0 00,000 fully paid registered shares with a nominal value of CHF 0.10 each, to be issued through the voluntary or mandatory exercise of conversion rights and / or warrants granted in connection with the issuance of bonds or similar financial instruments on national or international capital markets. This conditional capital allowance was approved at the Extraordinary General Meeting (EGM) held on 26 November 2014, originally approved at the Annual General Meeting (AGM) of UBS AG on 14 April 2010. The BoD has not made use of such allowance. – A maximum of CHF 12,170,583 represented by 121,705,830 fully paid registered shares with a nominal value of CHF 0.10 each, to be issued upon exercise of employee op t ions and stock appreciation rights issued to employees and members of the management and of the BoD of UBS Group AG and its subsidiaries. This conditional capital allowance was approved by the shareholders at the same EGM in 2014. Authorized share capital UBS Group AG had no authorized capital available to issue on 31 December 20 20 .
Share repurchase program	Share repurchase program In March 2018, UBS initiated a share repurchase program of up to CHF 2 billion over a three-year period. Under this program, UBS repurchas ed 31 million sha res totaling USD 364 mil lion in 2020 (201 9 : 69 million shares totaling USD 806 million). The program was completed on 2 February 2021 and the shares repurchased under the program are expected to be canceled by means of a capital reduction, to b e proposed for shareholder approval at the 2021 AGM. In February 2021, UBS commenced a new three-year share repurchase program of up to CHF 4 billion .
UBS AG
Disclosure Of Classes Of Share Capital [Line Items]
Share capital	Share information and earnings per share Ordinary sh are capital As of 31 December 2020, UBS AG had 3,85 8 , 408 , 466 issued shares (31 December 2019: 3,858,408,466 shares) with a nominal value of CHF 0.10 each, leading to a share capital of CHF 385, 840 , 846 . 6 0. The shares were entirely held by UBS Group AG. Conditional share capital As of 31 December 2020, the following conditional share capital was available to UBS AG’s Board of Directors (BoD): – A m aximum of CHF 38,000,000 represented by up to 380,000,000 full y paid registered shares with a nominal value of CHF 0.10 each, to be issued through the voluntary or mandatory exercise of conversion rights and / or warrants granted in connection with the issuance of bonds or similar financial instruments on national or international capital markets. This conditional capital allowance was approved at the Annual General Meeting of UBS AG on 14 April 2010. The BoD has not made use of such allowance. Authorized share capital UBS AG had no authorized capital available to is sue on 31 December 20 20 . Earnings per share In 2015, UBS AG shares were delisted from the SIX Swiss Exchange and the New York Stock Exchange. As of 31 December 20 20 , 100% of UBS AG’s issued shares were held by UBS Group AG and therefore were not publicly t raded. Accordingly, earnings per share information is not provided for UBS AG.

Significant accounting policies

Significant accounting policies	12 Months Ended
Significant accounting policies	Dec. 31, 2020
Disclosure Significant Accounting Policies [Line Items]
Significant accounting policies	a) Significant accounting policies This Note describes the significant accounting policies applied in the preparation of the consolidated financial statements (the Financial Statements) of UBS Group AG and its subsidiaries (UBS or the Group). On 25 February 2021 , the Financial Statements we re authorized for issue by the Board of Directors. Basis of accounting The Financial Statements have been prepared in accordance with International Financial Reporting Standards ( IFRS ) , as issued by the International Accounting Standards Board ( the IASB), and are presented in US dollars ( USD ) . Disclosures marked as audited in the “ Risk, capital, liquidity and funding, and balance sheet ” section of this report form an integral part of the Financial Statements. These disclosures relate to requirements under I FRS 7, Financial Instruments: Disclosures , and IAS 1, Presentation of Financial Statements , and are not repeated in this section. The accounting policies described in this Note have been applied consistently in all years presented unless otherwise stated in Note 1b. In addition, effective from 1 January 2019, the Group applies IFRS 16, Leases , which sets out the principles for the recognition, measurement, presentation and disclosure of leases . Within this Note, policies applied for periods that differ fro m those applied to the financial year ended 31 December 2020 are identified as “Comparative policy . ” Critical accounting estimates and judgments Preparation of these Financial Statements under IFRS requires management to apply judgment and make estimate s and assumptions that affect reported amounts of assets, liabilities, income and expenses and disclosure of contingent assets and liabilities, and may involve significant uncertainty at the time they are made. Such estimates and assumptions are based on t he best available information. UBS regularly reassesses such estimates and assumptions, which encompass historical experience, expectations of the future and other pertinent factors, to determine their continuing relevance based on current conditions, upda ting them as necessary. Changes in those estimates and assumptions may have a significant effect on the Financial Statements. Further more , actual results may differ significantly from UBS’s estimates, which could result in significant losses to the Group, beyond what was anticipated or provided for. The following areas contain estimation uncertainty or require critical judgment and have a significant effect on amounts recognized in the Financial Statements: – expected credit loss measurement (refer to item 2g in this Note and to Note 2 0 ); – fair value measurement (refer to item 2f in this Note and to Note 2 1 ); – income taxes (refer to item 7 in this Note and to Note 8); – provisions and contingent liabilities (refer to item 11 in this Note and to Note 18 ) ; – post-employment benefit plans (refer to item 6 in this Note and to Note 2 6 ); – goodwill (refer to item 10 in this Note and to Note 1 3 ); and – consolidation of structured entities (refer to item 1 in this Note and to Note 28 ) . 1) Consolidation The Financial Statements comprise the financial statements of the parent company (UBS Group AG) and its subsidiaries, presented as a single economic entity ; intercompany transactions and balances have been eliminated. UBS consolidates all entities that it controls, incl uding structured entities (SEs), which is the case when it has : ( i ) power over the relevant activities of the entity ; (ii) exposure to an entity ‘s variable returns ; and (iii) the ability to use its power to affect its own returns. Consideration is given to all facts and circumstances to determine whether the Group has power over another entity , i.e. , the current ability to direct the relevant activities of an entity when decisions about those activities need to be made. Subsidiaries, including SEs, are con solidated from the date when control is g ained and deconsolidated from the date when control ceases. Control, or the lack thereof, is reassessed if facts and circumstances indicate that there is a change to one or more elements required to establish that c ontrol is present. Business combinations are accounted for using the acquisition method. The amount of non-controlling interest is measured at the non-controlling interest’s proportionate share of the acquiree’s identifiable net assets. › Refer to Note 28 for more information Critical accounting estimates and judgments Each individual entity is assessed for consolidation in line with the aforementioned consolidation principles. The assessment of control can be complex and require s the use of significant judgment , in particular in determining whether UBS has power over the entity . As the nature and extent of UBS’s involvement is unique for each entity, there is no uniform consolidation outcome by entity. Certain entities within a class may be consolidated while others may not. When carrying out the consolidation assessment, judgment is exercised considering all the relevant facts and circums tances, including the nature and activities of the investee, as well as the substance of voting and similar rights. › Refer to Note 28 for more information 2 ) Financial instruments a. Recognition UBS recognizes financial instruments when it becomes a party to contractual provisions of an instrument. UBS applies settlement date accounting to all standard p urchases and sales of non-derivative financial instruments . In transactions wh ere UBS acts a s a transferee, to the extent such financial asset transfer does not qualify for derecognition by the t ransferor, UBS does not recogniz e the transferred instrument as its asset. UBS also acts in a fiduciary capacity, which results in it holding or placing assets on behalf of individuals, trusts, retirement benefit plans and other institutions. Unless these items meet the definition of an asset and the recognition cr iteria are satisfied, such assets are not recognized on UBS’s balance sheet and the related income is excluded from the F inancial S tatements. Client cash balances associated with derivatives clearing and execution services are not recognized on the balance sheet if, through contractual agreement, regulation or practice, UBS neither obtains benefits from nor controls such cash balances. b. Classi fication, measurement and presentation Financial assets All financial instruments are on initial recognition measured at fair value and classified as measured at amortized cost, fair value through other comprehensive income (FVOCI) or fair value through profit or loss (FVTPL) . For financial instruments subsequently measured at amortized cost or FVOCI , the initial fair value is adjusted for directly attributable transaction costs. Where the contractual terms of a debt instrument result in cash flows that are solely payments of principal and interest (SPPI) on the principal amount outstanding, the debt instrument is classified as measured at amortized cost if it is held within a business model that has an objective to hold financial assets to collect contractual cash flows , or at FVOCI if i t is held within a business model with the objective being achieved by both collecting contractual cash flows and selling financial assets . All other financial assets are measured at FVTPL , including those held for trading or those managed on a fair value basis, except for derivatives designated in a hedge relationship, in which case hedge accounting requirements apply (refer to item 2 j in this N ote for more information) . Business model assessment and contractual ca sh flow characteristics UBS determines the nature of a business model by considering the way financial assets are managed to achieve a particular business objective. In assessing whether the contractual cash flows are SPPI, the Group considers whether the contractual terms of the financial asset contain a term that could change the timing or amount of contractual cash flows arising over the life of the instrument. Financial liabilities Financial liabilities measured at amortized cost Debt issued measured at amortized cost includes contingent capital instruments contain ing contractual provisions under which the principal amounts would be written down or converted into equity upon either a specified common equity tier 1 ( CET1 ) ratio breach or a determination by the Swiss Financial Market Supervisory Authority ( FINMA ) that a viability event has occurred. Such contractual provisions are not derivatives , as the underlying is deemed to be a non-financial variable specific to a part y to the contract. Where there is a legal bail-in mechanism for write-down or conversion into equity (as is the case, for instance, with senior unsecured debt issued by the Group that is subject to write-down or conversion under resolution authority grant ed to FINMA under Swiss law), the amortized cost accounting treatment applied to these instruments is not affected. If the debt were to be written down or converted into equity in a future period, it would be partially or fully derecognized, with the dif ference between its carrying amount and the fair value of any equity issued recognized in the income statement. A gain or loss is recognized in Other income when debt issued is subsequently repurchased for market-making or other activities. A subsequent sa le of own bonds in the market is treated as a reissuance of debt. Financial liabilities measured at fair value through profit or loss UBS designates certain issued debt instruments as financial liabilities at fair value through profit or loss, on the basi s that such financial instruments include embedded derivatives and / or are managed on a fair value basis (refer to the table below for more information), in which case bifurcation of the embedded derivative component is not required. Financial instruments including embedded derivatives arise predominantly from the issuance of certain structured debt instruments. Measurement and presentation After initial recognition, UBS classifies, measures and presents its financial assets and liabilities in accordance with IFRS 9, as described in the table on the following pages. Classification, measurement and presentation of financial assets Financial assets c lassification Significant items included Measurement and presentation Measured at amortized cost This classification includes: – cash and balances at central banks ; – loans and advances to banks ; – cash collateral receivables on securities borrowed ; – receivables on reverse repurchase agreements ; – cash collateral receivables on derivative instruments ; – residential and commercial mortgages ; – corporate loans ; – secured loans, including Lombard loans, and unsecured loans ; – loans to financial advisors ; and – debt securities held as high-quality liquid assets (HQLA) . Measured at amortized cost using the effective interest method less allowances for expected credit losses (ECL) (refer to items 2 d and 2 g in this Note for more information). The following items are recognized in the income statement: – interest income, which is accounted for in accordance with item 2 d in this Note ; – ECL and reversals ; and – f oreign exchange translation gains and losses . When the financial asset at amortized cost is derecognized , the gain or loss is recognized in the income statement. For a mounts arising from settlement of certain derivatives, refer to the next page. Measured at FVOCI Debt instruments measured at FVOCI This classification primarily includes debt securities and certain asset-backed securities held as HQLA. Measured at fair value , with unrealized gains and losses reported in Other comprehensive income, net of applicable income taxes, until such investments are derecognized. Upon derecognition , any accumulated balances in Other comprehensive income are reclassified to the income statement and reported within Other income. The following items , which are determined on the same basis as for financial assets measured at amortized cost , are recognized in the income statement: – interest income, which is accounted for in accordance with item 2 d in this Note ; – ECL and reversals ; and – foreign exchange translation gains and losses. Classification, measurement and presentation of financial assets Financial assets c lassification Significant items included Measurement and presentation Measured at FVTPL Held for trading Financial assets held for trading include: – all derivatives with a positive replacement value, except those that are designated and effective hedging instruments; and – other financial assets acquired principally for the purpose of selling or repurchasing in the near term, or that are part of a portfolio of identified financial instruments that are managed together and for which there is evidence of a recent actual pattern of short-term profit taking. Included in this category are debt instruments (including those in the form of securi ties, money market paper , and traded corporate and bank loans) and equity instruments. Measured at fair value , with changes recognized in the income statement . Derivative assets (including derivatives that are designated and effective hedging instruments ) are generally presented as Derivative financial instruments , except those exchange-traded and OTC-cleared derivatives that are considered to be settled on a daily basis or in substance net settled on a daily basis, which are presented within Cash collate ral receivables on derivative instruments. Changes in fair value, initial transaction costs , dividends and gains and losses arising on disposal or redemption are recognized in Other net income from financial instruments measured at fair value through prof it or loss , 1 except interest income on instruments other than derivatives (refer to item 2d in this Note), interest on derivatives designated as hedging instruments in hedges of interest rate risk and forward points on certain short - and long -duration foreign exchange contracts acting as economic hedges , which are reported in Net interest income. Changes in the fair value of derivatives that are designated and effective hedging instruments are presented either in the income statement or O ther comprehe nsive income , depending on the type of hedge relationship (refer to item 2 j in this Note for more information). Mandatorily measured at FVTPL – Other This classification includes financial asset s mandatorily measured at FVTPL that are not held for trading , as follows : – c ertain structured loans, certain commercial loans, receivables under reverse repurchase and cash collateral on securities borrowing agreements that are managed on a fair value basis ; – loans managed on a fair value basis , including those hedged with credit derivatives ; – c ertain debt securities held as HQLA and managed on a fair value basis ; – c ertain investment fund holdings and assets held to hedge delivery obligations related to cash-settled employee compensation plans ; – b rokerage receivables, for which contractual cash flows do not meet the SPPI criterion because the aggregate balance is accounted for as a single unit of account, with interest being calculated on the individual components ; – a uction rate securities, for whic h contractual cash flows do not meet the SPPI criterion because interest may be reset at rates that contain leverage ; – e quity instruments ; and – a ssets held under unit-linked investment contracts . 1 E ffective from 1 January 2019, th is line item includes dividends (prior to 1 January 2019, dividends were included within Net interest income ), intermediation income arising from certain client-driven Global Wealth Management and Personal & Corporate Banking financial transactions, foreign c urrency translation effects and income and expenses from exposures to precious metals . Classification, measurement and presentation of financial liabilities Financial liabilities c lassificati on Significant items included Measurement and presentation Measured at amortized cost This classification includes: – demand and time deposits; – retail savings / deposits; – amounts payable under repurchase agreements; – cash collateral on securities lent; – non-structured fixed-rate bonds; – subordinated debt; – certificates of deposit and covered bonds; and – cash collateral payables on derivative instruments. Measured at amortized cost using the effective interest method. When the financial liability at amorti zed cost is derecognized, the gain or loss is recognized in the income statement. Measured at fair value through profit or loss Held for trading Financial liabilities held for trading include: – all derivatives with a negative replacement value (including certain loan commitments) , except those that are designated and effective hedging instruments; and – obligations to deliver financial instruments, such as debt and equity instruments, that UBS has sold to third parties but does not own (short positions). Mea surement and presentation of financial liabilities classified at FVTPL follow the same principles as for financial assets classified at FVTPL, except that the amount of change in the fair value of the financial liability designated at FVTPL that is attribu table to changes in UBS’s own credit risk is presented in O ther comprehensive income directly within R etained earnings and is never reclassified to the income statement . Derivative liabilities (including derivatives that are designated and effective hedging instruments) are generally presented as Derivative financial instruments , except those exchange-traded and OTC-cleared derivatives that are considered to be settled on a daily basis or in su bstance net settled on a daily basis, which are presented within Cash collateral payables on derivative instruments. Designated at FVTPL UBS designate s at FVTPL the following financial liabilities: – issued hybrid debt instruments that primarily include equity-linked, credit-linked and rates-linked bonds or notes ; – i ssued debt instruments managed on a fair value basis ; – c ertain payables under repurchase agreements and cash collateral on securities lending agreements that are managed in conjunction with associated reverse repurchase agreements and cash collateral on securities borrowed ; – a mounts due under unit-linked investment contracts whose cash flows are linked to financial assets measured at FVTPL and eliminate an accounting mismatch ; and – b rokerage pa yables, which arise in conjunction with brokerage receivables and are measured at FVTPL to achieve measurement consistency . c. Loan commitments and financial guarantees Loan commitments are arrangements to provide credit under defined terms and conditions. Irrevocable loan commitments are classified as: ( i ) derivative loan commitments measured at fair value through profit or loss; (ii) loan commitments designat ed at fair value through profit or loss; or (iii) loan commitments not measured at fair value. Financial guarantee contracts are contracts that require UBS to make specified payments to reimburse the holder for an incurred loss because a specified debtor f ails to make payments when due in accordance with the terms of a specified debt instrument. d . Interest income and expense Interest income and expense are recognized in the income statement based on the effective interest method . When calculating the effec tive interest rate (EIR) for financial instruments (other than credit-impaired financial instruments), UBS estimates future cash flows considering all contractual terms of the instrument, but not expected credit losses, with the EIR applied to the gross ca rrying amount of the financial asset or the amortized cost of a financial liability. However, when a financial asset becomes credit-impaired after initial recognition, interest income is determined by applying the EIR to the amortized cost of the instrumen t, which represents the gross carrying amount adjusted for any credit loss allowance. Upfront fees, including fees on loan commitments not measured at fair value where a loan is expected to be issued, and direct costs are included within the initial measu rement of a financial instrument measured at amortized cost or FVOCI and recognized over the expected life of the instrument as part of its EIR. Fees related to loan commitments where no loan is expected to be issued, as well as loan syndication fees where UBS does not retain a portion of the syndicated loan or where UBS does retain a portion of the syndicated loan at the same effective yield for comparable risk as other participants, are included in Net fee and commission income and either recognized over the life of the commitment or when syndication occurs . › Refer to item 3 in this Note for more information Interest income on financial assets, excluding derivatives, is included in interest income when positive and in i nterest expense when negative . Simil arly, interest expense on financial liabilities, excluding derivatives, is included in i nterest expense , except when interest rates are negative, in which case it is included in i nterest income . › Refer to item 2 b in this Note and Note 3 for more information e . Derecognition Financial assets UBS derecognizes a financial asset, or a portion of a financial asset, when the contractual rights to the cash flows from the financial asset expire, or UBS has either ( i ) transferred the contractual right s to receive the cash flows from the asset, or (ii) retained the contractual rights to receive the cash flows of that asset, but assumed a contractual obligation to pay the cash flows to one or more entities, subject to certain criteria. Transferred financial assets are derecognized if the purchaser has received substantially all the risks and rewards of the asset or a significant part of the risks and rewards combined with a practical ability to sell or pledge the asset. Where financial assets have b een pledged as collateral or in similar arrangements, they are considered to have been transferred if the counterparty has received the contractual right s to the cash flows of the pledged assets, as may be evidenced by , for example, the counterparty’s righ t to sell or repledge the assets. In transfers where control over the financial asset is retained, UBS continues to recognize the asset to the extent of its continuing involvement, determined by the extent to which it is exposed to changes in the value of the transferred asset following the transfer. Certain over-the-counter (OTC) derivative contracts and most exchange-traded futures and optio n contracts cleared through central cl earing counterpartie s and exchanges are considered to be settled on a daily basis , as the payment or receipt of variation margin on a daily basis represents legal or economic settlement, which results in derecognition of the associated derivatives . › Refer to item 2i in this Note, Note 22 and Note 23 for more information Financial liabilities UBS derecognizes a financial liability from its balance sheet when it is extinguished ; i.e., when the obligation specified in the contract is discharged, canceled or expire s . When an existing financial liability is exchanged for a new one from the same lender on substantially different terms, or the terms of an existing liability are substantially modified, the original liability is derecognized and a new liability recognized with any difference in the respective carrying amounts recognized in the income statement. f . Fair value of financial instruments UBS accounts for a significant portion of its assets and liabilities at fair value. Fair value is the price on the measurement date that would be received for the sale of an asset or paid to transfer a liability in an orderly transaction between market participants in the principal market, or in the most advantageous market in the absence of a principal market. › Refer to Note 21 for more information Critical accounting estimates and judgments The use of valuation techniques, modeling assumptions and estimates of unobservable market inputs in the fair valuation of financial instruments require s significant judgment and could affect the amount of gain or loss recorded for a particular position. Valuation techniques that rely more heavily on unobservable inputs and sophisticated models inherently require a higher leve l of judgment and may require adjustment to reflect factors that market participants would consider in estimating fair value, such as close-out costs, which are presented in Note 2 1 d. UBS‘ s governance framework over fair value measurement is described in Note 2 1 b , and UBS provides a sensitivity analysis of the estimated effects arising from changing significant unobservable inputs in Level 3 financial instruments to reasonably possible alternative assumptions within Note 2 1 g. › Refer to Note 21 for more information g . Allowances and provisions for expected credit losses Expected credit losses (ECL) are recognized for financial assets measured at amortized cost, financial assets measured at FVOCI, fee and lease receivables, financial guarantees and loan commitments not measured at fair value . ECL are also recognized on the undrawn portion of revolving revocable credit lines, which include UBS’s credit card limits and master credit facilities, and are referred to by UBS as “other credit lines.” Though these other credit lines are revocable at any time , UBS is exposed to credit risk because the borrower has the ability to draw down funds before UBS can take credit risk mitigation actions. Recognition of expected credit losses ECL are recognized on the following basis: – Stage 1 instruments: Maximum 12-month ECL are recognized from initial recognition, reflecting the portion of lifetime cash shortfalls that would result if a default occurs in the 12 months after the reporting date, weighted by the risk of a default occurring. – Stage 2 instruments: Lifetime ECL are recognized if a significant increase in credit risk (SICR) is observed subsequent to the instrument’s initial recognition, reflecting lifetime cash shortfalls that would result from all possible d efault events over the expected life of a financial instrument, weighted by the risk of a default occurring. When an SICR is no longer observed, the instrument will move back to stage 1. – Stage 3 instruments: Lifetime ECL are always recognized for credit-im paired financial instruments, as determined by the occurrence of one or more loss events, by estimating expected cash flows based on a chosen recovery strategy. Credit-impaired exposures may include positions for which no allowance has been recognized, for example because they are expected to be fully recoverable through collateral held. – Changes in lifetime ECL since initial recognition are also recognized for assets that are purchased or originated credit-impaired (POCI). POCI financial instruments include those that are purchased at a deep discount or newly originated with a defaulted co unterparty ; they remain a separate category until derecognition . All or part of a financial asset is written off if it is deemed uncollectible or forgiven. Write-offs reduce the principal amount of a claim and are charged against related allowances for credit losses. Recoveries , in part or in full, of amounts previously written off are generally credited to Credit loss (expense) / release . ECL are recognized in the income statement in Credit loss (expense) / release . A corresponding ECL allowance is reported as a decrease in the carrying amount of financial assets measured at amortized cost on the balance sheet. For financial assets that are FVOCI, the carrying amount is not reduced, but an accumulated amount is recognized in Other comprehensive inco me . For off-balance sheet financial instruments and other credit lines, provisions for ECL are presented in Provisions . Default and credit impairment UBS applies a single definition of default for credit risk management purposes, regulatory reporting and E CL, with a counterparty classified as defaulted based on quantitative and qualitative criteria. › Refer to ‘’Credit policies for distressed assets’’ in the ‘’Risk management and control’’ section of this report for more information Measurement of expected c redit losses IFRS 9 ECL reflect an unbiased, probability-weighted estimate based on loss expectations resulting from default events. The method used to calculate ECL applies the following principal factors: probability of default (PD), loss given default ( LGD) and exposure at default (EAD ). Parameters are generally determined on an individual financial asset level. Based on the materiality of the portfolio, for credit card exposures and personal account overdrafts in Switzerland, a portfolio approach is app lied that derives an average PD and LGD for the entire portfolio. PDs and LGDs used in the ECL calculation are point-in-time (PIT)-based for key portfolios and consider both current conditions and expected cyclical changes. For material portfolios, PD s and LGD s are determined for different scenarios, whereas EAD projections are treated as scenario independent. For the purpose of determining the ECL-relevant parameters, UBS leverages its Pillar 1 internal ratings-based (IRB) models that are also used in dete rmining expected loss (EL) and risk-weighted assets under the Basel III framework and Pillar 2 stress loss models. Adjustments have been made to these models and IFRS 9-related models have been developed that consider the complexity, structure and risk profile of relevant portfolios and take account of the fact that PDs and LGDs used in the ECL calculation are PIT-based, as opposed to the corresponding Basel III through-the-cycle (TTC) parameters. All models that are relevant for measuring expected credi t losses are subject to UBS ’ s model validation and oversight processes. Probability of default: PD represents the likelihood of a defau lt over a specified time period. A 12-month PD represents the likelihood of default determined for the next 12 months and a lifetime PD represents the probability of default over the remaining lifetime of the instrument. PIT PDs are derived from TTC PDs an d scenario forecasts. The modeling is region-, industry- and client segment-specific and considers both macroeconomic scenario dependencies and client-idiosyncratic information. Exposure at default: EAD represents an estimate of the exposure to credit risk at the time of a potential default occurring, considering expected repayments, interest payments and accruals, discounted at the EIR. Future drawdowns on facilities are considered through a credit conversion factor (CCF) that is reflective of historical d rawdown and default patterns and the characteristics of the respective portfolios. Loss given default: LGD represents an estimate of the loss at the time of a potential default occurring , taking into account expected future cash flows from collateral and o ther credit enhancements, or expected payouts from bankruptcy proceedings for unsecured claims and, where applicable, time to realization of collateral and the seniority of claims. The LGD is commonly expressed as a percentage of the EAD. Estimation of exp ected credit losses Number of scenarios and estimation of scenario weights The determination of the probability-weighted ECL requires evaluating a range of diverse and relevant future economic conditions, especially with a view to modeling the non-linear effect of assumptions about macroeconomic factors on the estimate. To accommodate this requirement, UBS uses different economic scenarios in the ECL calculation . Each scenario is represented by a specific scenario narrative, which is relevant considering the exposure of key portfolios to economic risks, and for which a set o f consistent macroeconomic variables is determined. An econometric model is used to provide an input into the scenario weight assessment process giving a first indication of the probability that the GDP forecast used for each scenario would materialize, if historically observed deviations of GDP growth from trend growth were representative. As such historical analyses of GDP development do not include an assessment of the underlying economic or political causes, management positions the model output into th e context of current conditions and future expectations and applies material judgment in determining the final scenario weights. The determined weights constitute the probabilities that the respective set of macroeconomic conditions will occur and not tha t the chosen particular na
UBS AG
Disclosure Significant Accounting Policies [Line Items]
Significant accounting policies	Note 1 Summary of significant accounting policies (continued) a) Significant accounting policies This Note describes the significant accounting policies applied in the preparation of the consolidated financial statements (the Financial Statements) of UBS AG and its subsidiaries (UBS AG ). On 25 February 2021 , the Financial Statements were authorized for issue by the Board of Directors. Basis of accounting The Financial Statements have been prepared in accordance with International Financial Reporting Standards ( IFRS ) , as issued by the International Accounting Stan dards Board ( the IASB), and are presented in US dollars ( USD ) . Disclosures marked as audited in the “ Risk, capital, liquidity and funding, and balance sheet ” section of this report form an integral part of the Financial Statements. These disclosures relate to requirements under IFRS 7, Financial Instruments: Disclosures , and IAS 1, Presentation of Financial Statements , and are not repeated in this section. T he accounting policies described in this Note have been applied consistently in all years presented unless otherwise stated in Note 1b. In addition, effective from 1 January 2019, UBS AG applies IFRS 16, Leases , which sets out the principles for the recognition, measurement, presentation and disclosure of leases . Within this Note, policies applied for periods that differ from those applied to the financial year ended 31 December 2020 are identified as “Comparative policy . ” Critical accounting estimates an d judgments Preparation of these Financial Statements under IFRS requires management to apply judgment and make estimates and assumptions that affect reported amounts of assets, liabilities, income and expenses and disclosure of contingent assets and liab ilities, and may involve significant uncertainty at the time they are made. Such estimates and assumptions are based on the best available information. UBS AG regularly reassesses such estimates and assumptions, which encompass historical experience, expec tations of the future and other pertinent factors, to determine their continuing relevance based on current conditions, updating them as necessary. Changes in those estimates and assumptions may have a significant effect on the Financial Statements. Furthe r more , actual results may differ significantly from UBS AG ’s estimates, which could result in significant losses to UBS AG , beyond what was anticipated or provided for. The following areas contain estimation uncertainty or require critical judgment and ha ve a significant effect on amounts recognized in the Financial Statements: – expected credit loss measurement (refer to item 2g in this Note and to Note 2 0 ); – fair value measurement (refer to item 2f in this Note and to Note 2 1 ); – income taxes (refer to item 7 in this Note and to Note 8); – provisions and contingent liabilities (refer to item 11 in this Note and to Note 18 ) ; – post-employment benefit plans (refer to item 6 in this Note and to Note 2 6 ); – goodwill (refer to item 10 in this Note and to Note 1 3 ); and – c onsolidation of structured entities (refer to item 1 in this Note and to Note 28 ) . 1) Consolidation The Financial Statements comprise the financial statements of UBS AG and its subsidiaries, presented as a single economic entity ; intercompany transaction s and balances have been eliminated. UBS AG consolidates all entities that it controls, including structured entities (SEs), which is the case when it has : (i) power over the relevant activities of the entity ; (ii) exposure to an entity ‘s variable returns ; and (iii) the ability to use its power to affect its own returns. Consideration is given to all facts and circumstances to determine whether UBS AG has power over another entity , i.e. , the current ability to direct the relevant activities of an entity whe n decisions about those activities need to be made. Subsidiaries, including SEs, are consolidated from the date when control is g ained and deconsolidated from the date when control ceases. Control, or the lack thereof, is reassessed if facts and circumsta nces indicate that there is a change to one or more elements required to establish that control is present. Business combinations are accounted for using the acquisition method. The amount of non-controlling interest is measured at the non-controlling inte rest’s proportionate share of the acquiree’s identifiable net assets. › Refer to Note 28 for more information Critical accounting estimates and judgments Each individual entity is assessed for consolidation in line with the aforementioned consolidation principles. The assessment of control can be complex and require s the use of significant judgment , in particular in determining whether UBS AG has power over the entity . As the nature and extent of UBS AG ’s involvement is uniqu e for each entity, there is no uniform consolidation outcome by entity. Certain entities within a class may be consolidated while others may not. When carrying out the consolidation assessment, judgment is exercised considering all the relevant facts and c ircumstances, including the nature and activities of the investee, as well as the substance of voting and similar rights. › Refer to Note 28 for more information 2 ) Financial instruments a. Recognition UBS AG recognizes financial instruments when it becomes a party to contractual provisions of an instrument. UBS AG applies settlement date accounting to all standard purchases and sales of non-derivative financial instruments . In transactions wh ere UBS AG acts a s a transferee, to the extent such financial asset transfer does not qualify for derecognition by the t rans feror, UBS AG does not recogniz e the transferred instrument as its asset. UBS AG also acts in a fiduciary capacity, which results in it holding or placing assets on behalf of individuals, trusts, retirement benefit plans and other institutions. Unless thes e items meet the definition of an asset and the recognition criteria are satisfied, such assets are not recognized on UBS AG ’s balance sheet and the related income is excluded from the F inancial S tatements. Client cash balances associated with derivatives clearing and execution services are not recognized on the balance sheet if, through contractual agreement, regulation or practice, UBS AG neither obtains benefits from nor controls such cash balances. b. Classification, measurement and presentation Financ ial assets All financial instruments are on initial recognition measured at fair value and classified as measured at amortized cost, fair value through other comprehensive income (FVOCI) or fair value through profit or loss (FVTPL) . For financial instrumen ts subsequently measured at amortized cost or FVOCI , the initial fair value is adjusted for directly attributable transaction costs. Where the contractual terms of a debt instrument result in cash flows that are solely payments of principal and interest (SPPI) on the principal amount outstanding, the debt instrument is classified as measured at amortized cost if it is held within a business model that has an objective to hold financial assets to collect contractual cash flows , or at FVOCI if i t is held within a business model with the objective being achieved by both collecting contractual cash flows and selling financial assets . All other financial assets are measured at FVTPL , including those held for trading or those managed on a fair value basis, except for derivatives designated in a hedge relationship, in which case hedge accounting requirements apply (refer to item 2 j in this N ote for more information) . Business model assessment and contractual cash flow characteristics UBS AG determines the nature of a business model by considering the way financial assets are managed to achieve a particular business objective. In assessing whether the contractual cash flows are SPPI, UBS AG considers whether the contractual terms of the financial asset conta in a term that could change the timing or amount of contractual cash flows arising over the life of the instrument . Financial liabilities Financial liabilities measured at amortized cost Financial liabilities measured at amortized cost include Debt issued measured at amortized cost and Funding from UBS Group AG and its subsidiaries , which constitute obligations of UBS AG arising from funding it has received from UBS Group AG or its subsidiaries, which are not within the UBS AG’s scope of consolidation. The latter includes contingent capital instruments issued to UBS Group AG and its subsidiaries contain ing contractual provisions under which the principal amounts would be written down or converted into equity upon either a specified common equity tier 1 ( CET 1 ) ratio breach or a determination by the Swiss Financial Market Supervisory Authority ( FINMA ) that a viability event has occurred. Such contractual provisions are not derivatives , as the underlying is deemed to be a non-financial variable specific to a pa rty to the contract. Where there is a legal bail-in mechanism for write-down or conversion into equity (as is the case, for instance, with senior unsecured debt issued by UBS AG that is subject to write-down or conversion under resolution authority grante d to FINMA under Swiss law), the amortized cost accounting treatment applied to these instruments is not affected. If the debt were to be written down or converted into equity in a future period, it would be partially or fully derecognized, with the diff erence between its carrying amount and the fair value of any equity issued recognized in the income statement. A gain or loss is recognized in Other income when debt issued is subsequently repurchased for market-making or other activities. A subsequent sal e of own bonds in the market is treated as a reissuance of debt. Financial liabilities measured at fair value through profit or loss UBS AG designates certain issued debt instruments as financial liabilities at fair value through profit or loss, on the ba sis that such financial instruments include embedded derivatives and / or are managed on a fair value basis (refer to the table below for more information), in which case bifurcation of the embedded derivative component is not required. Financial instrumen ts including embedded derivatives arise predominantly from the issuance of certain structured debt instruments. Measurement and presentation After initial recognition, UBS AG classifies, measures and presents its financial assets and liabilities in accor dance with IFRS 9, as described in the table on the following pages. Classification, measurement and presentation of financial assets Financial assets c lassification Significant items included Measurement and presentation Measured at amortized cost This classification includes: – cash and balances at central banks ; – loans and advances to banks ; – cash collateral receivables on securities borrowed ; – receivables on reverse repurchase agreements ; – cash collateral receivables on derivative instruments ; – residential and commercial mortgages ; – corporate loans ; – secured loans, including Lombard loans, and unsecured loans ; – loans to financial advisors ; and – debt securities held as high-quality liquid assets (HQLA) . Measured at amortized cost using the effective interest method less allowances for expected credit losses (ECL) (refer to items 2 d and 2 g in this Note for more information). The following items are recognized in the income statement: – interest income, which is accounted for in accordance with item 2 d in this Note ; – ECL and reversals ; and – f oreign exchange translation gains and losse s . When the financial asset at amortized cost is derecognized, the gain or loss is recognized in the income statement. For a mounts arising from settlement of certain derivatives, refer to the next page. Measured at FVOCI Debt instruments measured at FVOCI This classification primarily includes debt securities and certain asset-backed securities held as HQLA. Measured at fair value , with unrealized gains and losses reported in Other comprehensive income, net of applicable income taxes, until such investments are derecognized. Upon derecognition, any accumulated balances in Other comprehensive income are reclassified to the income statement and reported within Other income. The following items , which are determined on the same basis as for financial assets measured at amortized cost , are recognized in the income statement: – interest income, which is accounted for in accordance with item 2 d in this Note ; – ECL and reversals ; and – foreign exchange translation gains and losses. Classification, measurement and presentation of financial assets Financial assets c lassification Significant items included Measurement and presentation Measured at FVTPL Held for trading Financial assets held for trading include: – all derivatives with a positive replacement value, except those that are designated and effective hedging instruments; and – other financial assets acquired principally for the purpose of selling or repurchasing in the near term, or that are part of a portfolio of identified financial instruments that are managed together and for which there is evidence of a recent actual pattern of short-term profit taking. Included in this category are debt instruments (including those in the form of securities, money market paper , and traded corporate and bank loans) and equity instruments. Measured at fair value , with changes recognized in the income statement . Derivative assets (including derivatives that are designated and effective hedging instruments) are generally presented as Derivative financial instruments , except those exchange-traded and OTC-cleared derivatives that are considered to be settled on a daily basis or in substance net settled on a daily basis, which are presented within Cash collateral receivables on derivative instruments. Changes in fair value, initial transaction costs , dividends and gains and losses arising on disposal or redemption are recognized in Other net income from financial instruments measured at fair value through profit or loss , 1 except interest income on instruments other than derivatives (refer to item 2d in this Note), interest on derivatives de signated as hedging instruments in hedges of interest rate risk and forward points on certain short - and long -duration foreign exchange contracts acting as economic hedges , which are reported in Net interest income. Changes in the fair value of derivatives that are designated and effective hedging instruments are presented either in the income statement or O ther comprehensive income , depending on the type of hedge relationship (refer to item 2 j in this Note for more information). Mandatorily measured at FVTPL – Other This classification includes financial asset s mandatorily measured at FVTPL that are not held for trading , as follows : – c ertain structured loans, certain commercial loans, receivables under reverse repurchase and cash collateral on securitie s borrowing agreements that are managed on a fair value basis ; – loans managed on a fair value basis , including those hedged with credit derivatives ; – c ertain debt securities held as HQLA and managed on a fair value basis ; – c ertain investment fund holdings and assets held to hedge delivery obligations related to cash-settled employee compensation plans ; – b rokerage receivables, for which contractual cash flows do not meet the SPPI criterion because the aggregate balance is accounted for as a single unit of ac count, with interest being calculated on the individual components ; – a uction rate securities, for which contractual cash flows do not meet the SPPI criterion because interest may be reset at rates that contain leverage ; – e quity instruments ; and – a ssets held u nder unit-linked investment contracts . 1 E ffective from 1 January 2019, th is line item includes dividends (prior to 1 January 2019, dividends were included within Net interest income ), intermediation income arising from certain client-driven Global Wealth Management and Personal & Corporate Banking financial transactions, foreign currency translation effects and income and expenses from exposures to precious metals . Classi fication, measurement and presentation of financial liabilities Financial liabilities c lassification Significant items included Measurement and presentation Measured at amortized cost This classification includes: – demand and time deposits; – retail savings / deposits; – amounts payable under repurchase agreements; – cash collateral on securities lent; – non-structured fixed-rate bonds; – subordinated debt; – certificates of deposit and covered bonds; – obligations against funding from UBS Group AG and its su bsidiaries; and – cash collateral payables on derivative instruments. Measured at amortized cost using the effective interest method. When the financial liability at amortized cost is derecognized, the gain or loss is recognized in the income statement. Measured at fair value through profit or loss Held for trading Financial liabilities held for trading include: – all derivatives with a negative replacement value (including certain loan commitments) , except those that are designated and effective hedging in struments; and – obligations to deliver financial instruments, such as debt and equity instruments, that UBS AG has sold to third parties but does not own (short positions). Measurement and presentation of financial liabilities classified at FVTPL follow the same principles as for financial assets classified at FVTPL, except that the amount of change in the fair value of the financial liability designated at FVTPL that is attributable to changes in UBS AG ’s own credit risk is presented in O ther comprehensive income directly within R etained earnings and is never reclassified to the income statement . Derivative liabilities (including derivatives that are designated and effective hedging instruments) are ge nerally presented as Derivative financial instruments , except those exchange-traded and OTC-cleared derivatives that are considered to be settled on a daily basis or in substance net settled on a daily basis, which are presented within Cash collateral paya bles on derivative instruments. Designated at FVTPL UBS AG designate s at FVTPL the following financial liabilities: – issued hybrid debt instruments that primarily include equity-linked, credit-linked and rates-linked bonds or notes ; – i ssued debt instruments managed on a fair value basis ; – c ertain payables under repurchase agreements and cash collateral on securities lending agreements that are managed in conjunction with associated reverse repurchase agreements and cash collateral on securities bor rowed ; – a mounts due under unit-linked investment contracts whose cash flows are linked to financial assets measured at FVTPL and eliminate an accounting mismatch ; and – b rokerage payables, which arise in conjunction with brokerage receivables and are measured at FVTPL to achieve measurement consistency . c. Loan commitments and financial guarantees Loan commitments are arrangements to provide credit under defined terms and conditions. Irrevocable loan commitments are classified as: (i) derivative loan commitments measured at fair value through profit or loss; (ii) loan commitments designated at fair value through profit or loss; or (iii) loan commitments not measured at fair value. Financial guarantee contracts are contracts that require UBS AG to make specified payments to reimburse the holder for an incurred loss because a specified debtor fails to make payments when due in accordance with the terms of a specified debt instrument. d . Interest income and expense Interest income and expense are recognized in the income statement based on the effective interest method . When calculating the effective int erest rate (EIR) for financial instruments (other than credit-impaired financial instruments), UBS AG estimates future cash flows considering all contractual terms of the instrument, but not expected credit losses, with the EIR applied to the gross carryin g amount of the financial asset or the amortized cost of a financial liability. However, when a financial asset becomes credit-impaired after initial recognition, interest income is determined by applying the EIR to the amortized cost of the instrument, wh ich represents the gross carrying amount adjusted for any credit loss allowance. Upfront fees, including fees on loan commitments not measured at fair value where a loan is expected to be issued, and direct costs are included within the initial measuremen t of a financial instrument measured at amortized cost or FVOCI and recognized over the expected life of the instrument as part of its EIR. Fees related to loan commitments where no loan is expected to be issued, as well as loan syndication fees where UBS AG does not retain a portion of the syndicated loan or where UBS AG does retain a portion of the syndicated loan at the same effective yield for comparable risk as other participants, are included in Net fee and commission income and either recognized over the life of the commitment or when syndication occurs . › Refer to item 3 in this Note for more information Interest income on financial assets, excluding derivatives, is included in interest income when positive and in i nterest expense when negative . Simi larly, interest expense on financial liabilities, excluding derivatives, is included in i nterest expense , except when interest rates are negative, in which case it is included in i nterest income . › Refer to item 2 b in this Note and Note 3 for more information e . Derecognition Financial assets UBS AG derecognizes a financial asset, or a portion of a financial asset, when the contractual rights to the cash flows from the financial asset expire, or UBS AG has either (i) transferred the contractual right s to receive the cash flows from the asset, or (ii) retained the contractual rights to receive the cash flows of that asset, but assumed a contractual obligation to pay the cash flows to one or more entities , subject to certain criteria. Transferred financial assets are derecognized if the purchaser has received substantially all the risks and rewards of the asset or a significant part of the risks and rewards combined with a practical ability to sell or pled ge the asset. Where financial assets have been pledged as collateral or in similar arrangements, they are considered to have been transferred if the counterparty has received the contractual right s to the cash flows of the pledged assets, as may be evidenc ed by , for example, the counterparty’s right to sell or repledge the assets. In transfers where control over the financial asset is retained, UBS AG continues to recognize the asset to the extent of its continuing involvement, determined by the extent to w hich it is exposed to changes in the value of the transferred asset following the transfer. Certain over-the-counter (OTC) derivative contracts and most exchange-traded futures and optio n contracts cleared through central cl earing counterpartie s and exchanges are considered to be settled on a daily basis , as the payment or receipt of variation margin on a daily basis represents legal or economic settlement, which results in derecognition of the associated derivatives . › Refer to item 2i in this Note, Note 22 and Note 23 for more information Financial liabilities UBS AG derecognizes a financial liability from its balance sheet when it is extinguished ; i.e., when the obligation specified in the contract is discharged, canceled or expire s . When an existing financial liability is exchanged for a new one from the same lender on substantially different terms, or the terms of an existing liability are substantially modified, the original liability is derecognized and a new liability recognized with any difference in the respective carrying amounts recognized in the income statement. f . Fair value of financial instruments UBS AG accounts for a significant portion of its assets and liabilities at fair value. Fair value is the price on the measurement date that would be received for the sale of an asset or paid to transfer a liability in an orderly transaction between market partici pants in the principal market, or in the most advantageous market in the absence of a principal market. › Refer to Note 21 for more information Critical accounting estimates and judgments The use of valuation techniques, modeling assumptions and estimates of unobservable market inputs in the fair valuation of financial instruments require s significant judgment and could affect the amount of gain or loss recorded for a particular position. Valuation techniques that rely more heavily on unobservable inputs and sophisticated models inherently require a higher level of judgment and may require adjustment to reflect factors that market participants would consider in estimating fair value, such as close-out costs, which are presented in Note 2 1 d. UBS AG ‘ s governance framework over fair value measurement is described in Note 2 1 b , and UBS AG provides a sensitivity analysis of the estimated effects arising from changing significant unobservable inputs in Level 3 financial instruments to reasonably possible alternative assumptions within Note 2 1 g. › Refer to Note 21 for more inf ormation g . Allowances and provisions for expected credit losses Expected credit losses (ECL) are recognized for financial assets measured at amortized cost, financial assets measured at FVOCI, fee and lease receivables, financial guarantees and loan comm itments not measured at fair value . ECL are also recognized on the undrawn portion of revolving revocable credit lines, which include UBS AG ’s credit card limits and master credit facilities, and are referred to by UBS AG as “other credit lines.” Though these other credit lines are revocable at any time , UBS AG is exposed to credit risk because the borrower has the ability to draw down funds before UBS AG can take credit risk mitigation actions. Recognition of expected credit losses ECL are recognized on the following basis: – Stage 1 instruments: Maximum 12-month ECL are recognized from initial recognition, reflecting the portion of lifetime cash shortfalls that would result if a default occurs in the 12 months after the reporting date, weighted by the ris k of a default occurring. – Stage 2 instruments: Lifetime ECL are recognized if a significant increase in credit risk (SICR) is observed subsequent to the instrument’s initial recognition, reflecting lifetime cash shortfalls that would result from all possi ble default events over the expected life of a financial instrument, weighted by the risk of a default occurring. When an SICR is no longer observed, the instrument will move back to stage 1. – Stage 3 instruments: Lifetime ECL are always recognized for cred it-impaired financial instruments, as determined by the occurrence of one or more loss events, by estimating expected cash flows based on a chosen recovery strategy. Credit-impaired exposures may include positions for which no allowance has been recognized , for example because they are expected to be fully recoverable through collateral held. – Changes in lifetime ECL since initial recognition are also recognized for assets that are purchased or originated credit-impaired (POCI). POCI financial instruments include those that are purchased at a deep discount or newly originated with a defaulted co unterparty ; they remain a separate category until derecognition. All or part of a financial asset is written off if it is deemed uncollectible or forgiven. Write-offs reduce the principal amount of a claim and are charged against related allowances for credit losses. Recoveries , in part or in full, of amounts previously written off are generally credited to Credit loss (expense) / release . ECL are recognized in the income statement in Credit loss (expense) / release . A corresponding ECL allowance is repo rted as a decrease in the carrying amount of financial assets measured at amortized cost on the balance sheet. For financial assets that are FVOCI, the carrying amount is not reduced, but an accumulated amount is recognized in Other comprehensive income . F or off-balance sheet financial instruments and other credit lines, provisions for ECL are presented in Provisions . Default and credit impairment UBS AG applies a single definition of default for credit risk management purposes, regulatory reporting and ECL , with a counterparty classified as defaulted based on quantitative and qualitative criteria. › Refer to ‘’Credit policies for distressed assets’’ in the ‘’Risk management and control’’ section of this report for more information Measurement of expected cre dit losses IFRS 9 ECL reflect an unbiased, probability-weighted estimate based on loss expectations resulting from default events. The method used to calculate ECL applies the following principal factors: probability of default (PD), loss given default (LG D) and exposure at default (EAD ). Parameters are generally determined on an individual financial asset level. Based on the materiality of the portfolio, for credit card exposures and personal account overdrafts in Switzerland, a portfolio approach is appli ed that derives an average PD and LGD for the entire portfolio. PDs and LGDs used in the ECL calculation are point-in-time (PIT)-based for key portfolios and consider both current conditions and expected cyclical changes. For material portfolios, PD s and L GD s are determined for different scenarios, whereas EAD projections are treated as scenario independent. For the purpose of determining the ECL-relevant parameters, UBS AG leverages its Pillar 1 internal ratings-based (IRB) models that are also used in determining expected loss (EL) and risk-weighted assets under the Basel III framework and Pillar 2 stress loss models. Adjustments have been made to these models and IFRS 9-related models have been developed that consider the complexity, structure and risk profile of relevant portfolios and take account of the fact that PDs and LGDs used in the ECL calculation are PIT-based, as opposed to the corresponding Basel III through-the-cycle (TTC) parameters. All models that are relevant for measuring expected cred it losses are subject to UBS ’ s model validation and oversight processes. Probability of default: PD represents the like lihood of a default over a specified time period. A 12-month PD represents the likelihood of default determined for the next 12 months and a lifetime PD represents the probability of default over the remaining lifetime of the instrument. PIT PDs are derive d from TTC PDs and scenario forecasts. The modeling is region-, industry- and client segment-specific and considers both macroeconomic scenario dependencies and client-idiosyncratic information. Exposure at default: EAD represents an estimate of the exposu re to credit risk at the time of a potential default occurring, considering expected repayments, interest payments and accruals, discounted at the EIR. Future drawdowns on facilities are considered through a credit conversion factor (CCF) that is reflectiv e of historical drawdown and default patterns and the characteristics of the respective portfolios. Loss given default: LGD represents an estimate of the loss at the time of a potential default occurring , taking into account expected future cash flows from collateral and other credit enhancements, or expected payouts from bankruptcy proceedings for unsecured claims and, where applicable, time to realization of collateral and the seniority of claims. The LGD is commonly expressed as a percentage of the EAD. Estimation of expected credit losses Number of scenarios and estimation of scenario weights The determination of the probability-weighted ECL requires evaluating a range of diverse and relevant future economic conditions, especially with a view to modeling the non-linear effect of assumptions about macroeconomic factors on the estimate. To accom modate this requirement, UBS AG uses different economic scenarios in the ECL calculation . Each scenario is represented by a specific scenario narrative, which is relevant considering the exposure of key portfolios to economic risks, and for which a set of consistent macroeconomic variables is determined. An econometric model is used to provide an input into the scenario weight assessment process giving a first indication of the probability that the GDP forecast used for each scenario would materialize, if h istori

Changes in accounting policies,

Changes in accounting policies, comparability and adjustments	12 Months Ended
	Dec. 31, 2020
Disclosure Significant Accounting Policies [Line Items]
Changes in accounting policies, comparability and adjustments	b) Changes in accounting policies, comparability and other adjustments New or amended accounting standards Adoption of hedge accounting requirements of IFRS 9, Financial Instruments Effective from 1 January 2020, UBS has prospectively adopted the hedge accounting requirements of IFRS 9, Financial Instruments , for all of its existing hedge accounting p rograms, except for fair value hedges of portfolio interest rate risk, which, as permitted under IFRS 9, continue to be accounted for under IAS 39, Financial Instruments: Recognition and Measurement . The adoption of these requirements has not changed any o f the hedge designations disclosed in the Annual Report 2019 with only minor amendments to hedge documentation and hedge effectiveness testing methodologies required to make them compliant with IFRS 9. The adoption had no financial effect on UBS’s financia l statements. However, starting on 1 January 2020, UBS began to designate cross-currency swaps as Fair value hedges of foreign exchange risk related to debt instruments and utilized the cost of hedging approach introduced by IFRS 9. › Refer to Note 1a item 2 j for more information about the Group’s hedge accounting policies under IFRS 9 and Note 25 for more information about Fair value hedges of foreign exchange risk related to debt instruments
Other changes to accounting policies	Other changes to financial reporting Modification of deferred com pensation awards During 2020 , UBS modified the terms of certain outstanding deferred compensation awards granted for performance years 2015 through 2019 by removing the requirement to provide future service for qualifying employees. These awards remain sub ject to forfeiture if certain non-vesting conditions are not satisfied. As a result, UBS recognized an expense of USD 359 million in the third quarter of 2020, of which USD 314 million was recorded within Variable compensation – performance awards , USD 24 million within Social security and USD 21 million within Other personnel expenses , with a USD 212 million increase in compensation-related liabilities for cash-settled awards and social security-related accruals, and a USD 147 million increase in share pr emium for equity -settled awards. The full year effect was an expense of approximately USD 2 8 0 million , of which USD 240 million is disclosed within Variable compensation – performance awards , USD 20 million within Social security and USD 20 million within Other personnel expenses , with increases of a pproximately USD 170 million in compensation-related liabilities for cash-settled awards and social security-related accruals and approximately USD 110 million in share premium for equity -settled awards . Outstanding deferred compensation awards granted to Group Executive Board members, those granted under the Long-Term Incentive Plan, as well as those granted to financial advisors in the US, were not affected by these changes. Restatemen t of compensation-related liabilities During 2020, UBS restated its balance sheet and statement of changes in equity as of 1 January 2018 to correct a USD 43 million liability understatement in connection with a legacy Global Wealth Management deferred com pensation plan, with the effects presented in the table below. The restatement resulted from a correction of an actuarial calculation associated with compensation-related liabilities. The effects of the understatement were not material to prior-year financ ial statements; however, such effects would have been material to the quarterly reporting period in which the understatement was identified and therefore prior years were restated. The restatement had no effect on Net profit / (loss) or basic and diluted e arnings per share for the current period or for any comparative periods. 31.12.19 31.12.18 1.1.18 USD million As reported Effect Restated As reported Effect Restated As reported Effect Restated Balance sheet assets Deferred tax assets 9,537 11 9,548 10,105 11 10,116 10,184 11 10,195 Total assets 972,183 11 972,194 958,489 11 958,500 938,788 11 938,799 Balance sheet liabilities Other non-financial liabilities 8,794 43 8,837 9,022 43 9,065 9,443 43 9,486 of which: Compensation-related liabilities 6,812 43 6,855 7,278 43 7,321 7,873 43 7,916 of which: financial advisor compensation plans 1,463 43 1,506 1,458 43 1,501 Not disclosed Total liabilities 917,476 43 917,519 905,386 43 905,429 886,851 43 886,894 Equity Retained earnings 34,154 (32) 34,122 30,448 (32) 30,416 25,389 (32) 25,357 Equity attributable to shareholders 54,533 (32) 54,501 52,928 (32) 52,896 51,879 (32) 51,847 Total equity 54,707 (32) 54,675 53,103 (32) 53,071 51,938 (32) 51,906 Total liabilities and equity 972,183 11 972,194 958,489 11 958,500 938,788 11 938,799 Segment reporting Effective from 1 January 2020, UBS no longer discloses a detailed cost breakdown by financial statement line item within its segment reporting disclosures provided in Note 2. The modified approach of presenting operating expenses for each division aligns t he reporting with the way that UBS manages its cost base . This change has no effect on the income statement, or on the net profit of any business division. Presentation of interest income and expense from financial instruments measured at fair value throu gh profit or loss Effective from 1 January 2020, UBS presents interest income and interest expense from financial instruments measured at fair value through profit or loss on a net basis, in line with how UBS assesses and reports interest and in accordance with IFRS. This presentation change has no effect on Net interest income or on Net profit / (loss) attributable to shareholders . Prior periods have been aligned with this change in presentation. Further information about net interest income from financial instruments measured at fair value through profit or loss is provided in Note 3.
IFRSs and interpretations to be adopted and other adjustments	c ) International Financial Reporting Standards and In terpretations to be adopted in 2021 and later and other changes Amendments to IAS 39, IFRS 9 and IFRS 7 ( Interest Rate Benchmark Reform – Phase 2 ) In August 2020, the IASB issued Interest Rate Benchmark Reform – Phase 2, Amendments to IFRS 9, IAS 39, IFRS 7, IFRS 4 and IFRS 16 addressing a number of issues in financial reporting areas that arise when IBOR rates are reform ed or replaced. The amendments provide a practical expedient which permits certain changes in the contractual cash flows of debt instruments attributable to the replacement of IBOR rates with alternative risk-free interest rates (RFRs) to be accounted for prospectively by updating the instrument’s EIR . In terms of hedge accounting, the amendments provide relief from discontinuing hedge relationships because of changes resulting from the replacement of IBOR rates and temporary relief from having to ensure that the designated RFR risk component is separately identifiable. Additionally, the amendments do not require remeasurement or immediate release to the income statement of the accumulated amounts resulting from IBOR hedges upon the change to RFRs. Further more, the amendments introduce additional disclosure requirements covering any new risks arising from the reforms and how the transition to alternative benchmark rates is managed. UBS will adopt these amendments on 1 January 2021 and does not expect a material effect on the Group’s financial statements. › Refer to Note 25 for more information IFRS 17, Insurance Contracts In May 2017, the IASB issued IFRS 17, Insurance Contracts , which sets out the accounting requirements for contractual rights and oblig ations that arise from insurance contracts issued and reinsurance contracts held. IFRS 17 is effective from 1 January 202 3 . UBS is assessing the standard , but does not expect it to have a material effect on the Group ’ s financial sta tements . Amendments to I AS 1, Presentation of Financial Statements , IFRS Practice Statement 2, Making Materiality Judgements and IAS 8 , Accounting Policies, Changes in Accounting Estimates and Errors In February 2021, the IASB issued amendments to IAS 1, Presentation of Financial Statements , IFRS Practice Statement 2, Making Materiality Judgements and amendments to IAS 8, Accounting Policies , Changes in Accounting Estimates and Errors , to help improve accounting policy disclosures and distinguish changes in accounting estimates from changes in accounting policies. These amendments are effective from 1 January 2023, with early application permitted. UBS is currently assessing the effect on the Group’s financial statements. Annual Improvements to IFRS Standards 2018–2020 Cycle and narrow-scope amendments to IFRS 3, Business Combinations , and IAS 37, Provisions, Contingent Liabilities and Contingent Assets In May 2020, the IASB issued sever al narrow-scope amendments to a number of standards as well as Annual Improvements to IFRS Standards 2018–2020 Cycle . These minor amendments are effective from 1 January 2022. UBS is currently assessing the effect on the Group’s financial statements.
UBS AG
Disclosure Significant Accounting Policies [Line Items]
Changes in accounting policies, comparability and adjustments	b) Changes in accounting policies, comparability and other adjustments New or amended accounting standards Adoption of hedge accounting requirements of IFRS 9, Financial Instruments Effective from 1 January 2020, UBS AG has prospectively adopted the hedge accounting requirements of IFRS 9, Financial Instruments , for all of its existing hedg e accounting programs, except for fair value hedges of portfolio interest rate risk, which, as permitted under IFRS 9, continue to be accounted for under IAS 39, Financial Instruments: Recognition and Measurement . The adoption of these requirements has not changed any of the hedge designations disclosed in the Annual Report 2019 with only minor amendments to hedge documentation and hedge effectiveness testing methodologies required to make them compliant with IFRS 9. The adoption had no financial effect on UBS AG’s financial statements. However, starting on 1 January 2020, UBS AG began to designate cross-currency swaps as Fair value hedges of foreign exchange risk related to debt instruments and utilized the cost of hedging approach introduced by IFRS 9. › Refer to Note 1a item 2 j for more information about UBS AG’s hedge accounting policies under IFRS 9 and Note 25 for more information about Fair value hedges of foreign exchange risk related to debt instrumen ts
Other changes to accounting policies	Other changes to financial reporting Modification of deferred compensation awards During 2020 , UBS AG modified the terms of certain outstanding deferred compensation awards granted for performance years 2015 through 2019 by removing the requirement to provide future service for qualifying employees. These awards remain subject to forfeiture if certain non-vesting conditions are not satisfied. As a result, UBS AG recognized an expense of USD 342 million in the third quarter of 2020, of which USD 303 mill ion was recorded within Variable compensation – performance awards , USD 23 million within Social security and USD 16 million within Other personnel expenses , with a corresponding increase of USD 342 million in liabilities . The full year effect was an expen se of approximately USD 2 7 0 million , of which USD 240 million is disclosed within Variable compensation – performance awards , USD 20 million within Social security and USD 10 million within Other personnel expenses, with a n increase of approximately USD 270 million in liabilities . Outstanding deferred compensation awards granted to Group Executive Board members, those granted under the Long-Term Incentive Plan, as well as those granted to financial advisors in the US, were not affected by these changes. Restatement of compensation-related liabilities During 2020, UBS AG restated its balance sheet and statement of changes in equity as of 1 January 2018 to correct a USD 43 million liability understatement in connection with a legacy Global W ealth Management deferred compensation plan, with the effects presented in the table below. The restatement resulted from a correction of an actuarial calculation associated with compensation-related liabilities. The effects of the understatement were not material to prior-year financial statements; however, such effects would have been material to the quarterly reporting period in which the understatement was identified and therefore prior years were restated. The restatement had no effect on Net profit / (loss) for the current period or for any comparative periods. 31.12.19 31.12.18 1.1.18 USD million As reported Effect Restated As reported Effect Restated As reported Effect Restated Balance sheet assets Deferred tax assets 9,513 11 9,524 10,066 11 10,077 10,121 11 10,132 Total assets 971,916 11 971,927 958,055 11 958,066 939,528 11 939,539 Balance sheet liabilities Other non-financial liabilities 6,168 43 6,211 6,275 43 6,318 6,499 43 6,542 of which: Compensation-related liabilities 4,296 43 4,339 4,645 43 4,688 5,036 43 5,079 of which: financial advisor compensation plans 1,459 43 1,502 1,454 43 1,497 Not disclosed Total liabilities 917,988 43 918,031 905,624 43 905,667 888,100 43 888,143 Equity Retained earnings 23,451 (32) 23,419 23,317 (32) 23,285 21,646 (32) 21,614 Equity attributable to shareholders 53,754 (32) 53,722 52,256 (32) 52,224 51,370 (32) 51,338 Total equity 53,928 (32) 53,896 52,432 (32) 52,400 51,429 (32) 51,397 Total liabilities and equity 971,916 11 971,927 958,055 11 958,066 939,528 11 939,539 Segment reporting Effective from 1 January 2020, UBS AG no longer discloses a detailed cost breakdown by financial statement line item within its segment reporting disclosures provided in Note 2. The modified approach of presenting operating expenses for each division aligns the reporting with the way that UBS AG manages its cost base . This change has no effect on the income statement, or on the net profit of any business division. Presentation of interest income and expense from financial instruments measured at fair value through profit or loss Effective fro m 1 January 2020, UBS AG presents interest income and interest expense from financial instruments measured at fair value through profit or loss on a net basis, in line with how UBS AG assesses and reports interest and in accordance with IFRS. This presenta tion change has no effect on Net interest income or on Net profit / (loss) attributable to shareholders . Prior periods have been aligned with this change in presentation. Further information about net interest income from financial instruments measured at fair value through profit or loss is provided in Note 3.
IFRSs and interpretations to be adopted and other adjustments	c ) International Financial Reporting Standards and In terpretations to be adopted in 2021 and later and other changes Amendments to IAS 39, IFRS 9 and IFRS 7 ( Interest Rate Benchmark Reform – Phase 2 ) In August 2020, the IASB issued Interest Rate Benchmark Reform – Phase 2, Amendments to IFRS 9, IAS 39, IFRS 7, IFRS 4 and IFRS 16 addressing a number of issues in financial reporting areas that arise when IBOR rates are reform ed or replaced. The amendments provide a practical expedient which permits certain changes in the contractual cash flows of debt instruments attributable to the replacement of IBOR rates with alternative risk-free interest rates (RFRs) to be accounted for prospectively by updating the instrument’s EIR . In terms of hedge accounting, the amendments provide relief from discontinuing hedge relationships because of changes resulting from the replacement of IBOR rates and temporary relief from having to ensure that the designated RFR risk component is separately identifiable. Additionally, the amendments do not require remeasurement or immediate release to the income statement of the accumulated amounts resulting from IBOR hedges upon the change to RFRs. Further more, the amendments introduce additional disclosure requirements covering any new risks arising from the reforms and how the transition to alternative benchmark rates is managed. UBS AG will adopt these amendments on 1 January 2021 and does not expect a material effect on it s financial statements. › Refer to Note 25 for more information IFRS 17, Insurance Contracts In May 2017, the IASB issued IFRS 17, Insurance Contracts , which sets out the accounting requirements for contractual rights and obligations that arise from insurance contracts issued and reinsurance contracts held. IFRS 17 is effective from 1 January 202 3 . UBS AG is assessing the standard , but does not expect it to have a material effect on i t s financial sta tements . Amendments to IAS 1, Presentation of Financial Statements , IFRS Practice Statement 2, Making Materiality Judgements and IAS 8, Accounting Policies, Changes in Accounting Estimates and Errors In February 2021, the IASB issued amen dments to IAS 1, Presentation of Financial Statements , IFRS Practice Statement 2, Making Materiality Judgements and amendments to IAS 8, Accounting Policies , Changes in Accounting Estimates and Errors to help improve accounting policy disclosures and disti nguish changes in accounting estimates from changes in accounting policies. These amendments are effective from 1 January 2023, with early application permitted. UBS AG is currently assessing the effect on its financial statements. Annual Improvements to I FRS Standards 2018–2020 Cycle and narrow-scope amendments to IFRS 3, Business Combinations , and IAS 37, Provisions, Contingent Liabilities and Contingent Assets In May 2020, the IASB issued several narrow-scope amendments to a numbe r of standards as well as Annual Improvements to IFRS Standards 2018–2020 Cycle . These minor amendments are effective from 1 January 2022. UBS AG is currently assessing the effect on its financial statements.

Segment reporting

Segment reporting	12 Months Ended
Segment reporting	Dec. 31, 2020
Disclosure Of Operating Segments [Line Items]
Disclosure Of Entitys Reportable Segments Explanatory	Note 2 a Segment reporting UBS’s businesses are organized globally into four business divisions: Global Wealth Management, Personal & Corporate Banking, Asset Management and the Investment Bank. All four business divisions are supported by Group Functions and qualify as reportable segments for the purpose of segment reporting. Together with Group Functions, the fou r business divisions reflect the management structure of the Group: – Global Wealth Management provides investment advice and solutions , as well as lending solutions, to private clients, in particular in the ultra high net worth and high net worth segments. The business is managed globally across the regions. – Personal & Corporate Banking provides comprehensive financial products and services to private, corporate and institutional clients , operat ing across all banking markets in Switzerland . – Asset Management is a large-scale and diversified global asset manager. It offers investment capabilities and styles across all major traditional and alternative asset classes, as well as advisory support to institutions, wholesale intermediaries and wealth mana gement clients globally . – The Investment Bank provides a range of services to institutional, corporate and wealth management clients globally, to help them raise capital, grow their businesses, invest and manage risks. Offerings include advisory services, capital markets, cash and derivatives trading across equities and fixed income and financing. – Group Functions – formerly named Corporate Center, is made up of th e following major areas: Group Services ( which consists of Technology, Corporate Services, Human Resources , Operations , Finance, Legal, Risk Control, Research and Analytics , Compliance, Regulatory & Governance, Communications & Branding and UBS in S ociety ) , Group Treasury and Non-core and Legacy Portfolio . Financial information about the four business divisions and Group Functions is presented separately in internal management reports to the Group Executive Board (the GEB), which is considered the “chief operating decision maker” pursuant to IFRS 8, Operating Segments . UBS’s internal accounting policies, which include management accounting policies and service level agreements, determine the revenues and expenses directly attributable to each reportable segment. Transactions between the reportable segments are carried out at internally agreed ra tes and are reflected in the operating results of the reportable segments. Revenue-sharing agreements are used to allocate external client revenues to reportable segments where several reportable segments are involved in the value creation chain. Total int ersegment revenues for the Group are immaterial, as the majority of the revenues are allocated across the segments by means of revenue-sharing agreements. Interest income earned from managing UBS’s consolidated equity is allocated to the reportable segment s based on average attributed equity and currency composition. Assets and liabilities of the reportable segments are funded through and invested with Group Functions, and the net interest margin is reflected in the results of each reportable segment. Segme nt assets are based on a third-party view and do not include intercompany balances. This view is in line with internal reporting to the GEB. If one operating segment is involved in an external transaction together with another operating segment or Group Fu nctions, additional criteria are considered to determine the segment that will report the associated assets. This will include a consideration of which segment’s business needs are being addressed by the transaction and which segment is providing the fundi ng and / or resources. Allocation of liabilities follows the same principles. Non-current assets disclosed for segment reporting purposes represent assets that are expected to be recovered more than 12 months after the reporting date, excluding financial i nstruments, deferred tax assets and post-employment benefits . Effective from 1 January 2020, UBS only reports total operating expenses for each business division and no longer discloses a detailed cost breakdown by financial statement line item. This chang e streamlines reporting, ensures alignment with how UBS manages its cost base and has no effect on the i ncome s tatement, or on the net profit of any business division. USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions UBS For the year ended 31 December 2020 Net interest income 4,027 2,049 (17) 284 (481) 5,862 Non-interest income 1 13,107 1,858 2,993 9,235 30 27,222 Income 17,134 3,908 2,975 9,519 (452) 33,084 Credit loss (expense) / release (88) (257) (2) (305) (42) (694) Total operating income 17,045 3,651 2,974 9,214 (494) 32,390 Total operating expenses 13,026 2,392 1,519 6,732 567 24,235 Operating profit / (loss) before tax 4,019 1,259 1,455 2,482 (1,060) 8,155 Tax expense / (benefit) 1,583 Net profit / (loss) 6,572 Additional information Total assets 367,714 231,657 28,589 369,683 128,122 1,125,765 Additions to non-current assets 5 12 385 150 2,294 2,847 USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions UBS For the year ended 31 December 2019 Net interest income 3,947 1,992 (25) (669) (744) 4,501 Non-interest income 12,426 1,744 1,962 7,968 367 24,467 Income 16,373 3,736 1,938 7,299 (378) 28,967 Credit loss (expense) / release (20) (21) 0 (30) (7) (78) Total operating income 16,353 3,715 1,938 7,269 (385) 28,889 Total operating expenses 12,955 2,274 1,406 6,485 192 23,312 Operating profit / (loss) before tax 3,397 1,441 532 784 (577) 5,577 Tax expense / (benefit) 1,267 Net profit / (loss) 4,310 Additional information Total assets 2 309,766 209,405 34,565 315,855 102,603 972,194 Additions to non-current assets 68 10 0 1 5,217 5,297 USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions UBS For the year ended 31 December 2018 Net interest income 4,101 2,049 (29) (459) (613) 5,048 Non-interest income 12,700 2,168 1,881 8,538 (4) 25,283 Income 16,800 4,217 1,852 8,079 (617) 30,330 Credit loss (expense) / release (15) (56) 0 (38) (8) (118) Total operating income 16,785 4,161 1,852 8,041 (626) 30,213 Total operating expenses 13,531 2,365 1,426 6,554 346 24,222 Operating profit / (loss) before tax 3,254 1,796 426 1,486 (971) 5,991 Tax expense / (benefit) 1,468 Net profit / (loss) 4,522 Additional information Total assets 2 313,737 200,703 28,140 302,253 113,667 958,500 Additions to non-current assets 196 23 1 89 1,666 1,975 1 Includes a USD 631 million net gain on the sale of a majority stake in Fondcenter AG, of which USD 571 million was recognized in Asset Management and USD 60 million was recognized in Global Wealth Management. Refer to Note 29 for more information. 2 Information has been restated where applicable. Refer to Note 1b for more information. Note 2 b Segment reporting by geographic location The operating regions shown in the table below correspond to the regional management structure of the Group. The allocation of operating income to these regions reflects, and is consistent with, the basis on which the business is managed and its performance is evaluated. These allocations involve assumptions and judgments that management considers to be reasonable, and may be refined to reflect changes in estimates or management structure. The main principles of the allocation met hodology are that client revenues are attributed to the domicile of the given client and trading and portfolio management revenues are attributed to the country where the risk is managed. This revenue attribution is consistent with the mandate of the regio nal Presidents. Certain revenues, such as those related to N on-core and L egacy P ortfolio in Group Functions , are managed at a Group level. These revenues are included in the Global line. The geographic analysis of non-current assets is based on the locatio n of the entity in which the given assets are recorded. For the year ended 31 December 2020 Total operating income Total non-current assets USD billion Share % USD billion Share % Americas 13.0 40 9.0 42 of which: USA 11.7 36 8.4 40 Asia Pacific 6.0 18 1.5 7 Europe, Middle East and Africa (excluding Switzerland) 6.5 20 3.0 14 Switzerland 6.9 21 7.6 36 Global 0.1 0 0.0 0 Total 32.4 100 21.1 100 For the year ended 31 December 2019 Total operating income 1 Total non-current assets USD billion Share % USD billion Share % Americas 12.0 42 8.9 44 of which: USA 10.9 38 8.5 42 Asia Pacific 4.7 16 1.4 7 Europe, Middle East and Africa (excluding Switzerland) 5.8 20 3.0 15 Switzerland 6.7 23 7.1 35 Global (0.3) (1) 0.0 0 Total 28.9 100 20.3 100 For the year ended 31 December 2018 Total operating income 1 Total non-current assets USD billion Share % USD billion Share % Americas 12.6 42 7.4 43 of which: USA 11.5 38 7.0 41 Asia Pacific 4.9 16 0.9 5 Europe, Middle East and Africa (excluding Switzerland) 6.2 21 2.0 12 Switzerland 7.1 24 6.8 40 Global (0.6) (2) 0.0 0 Total 30.2 100 17.1 100 1 Effective as of 1 January 2020, the Investment Bank was realigned into two new business lines, Global Banking and Global Markets, which affects how the business is managed and therefore the allocation of operating income to the regions. The presentation of prior-year information reflects the new regional management structure of the Investment Bank.
UBS AG
Disclosure Of Operating Segments [Line Items]
Disclosure Of Entitys Reportable Segments Explanatory	Note 2 a Segment reporting UBS AG’s businesses are organized globally into four business divisions: Global Wealth Management, Personal & Corporate Banking, Asset Management and the Investment Bank. All four business divisions are supported by Group Functions and qualify as reportabl e segments for the purpose of segment reporting. Together with Group Functions, the four business divisions reflect the management structure of UBS AG : – Global Wealth Management provides investment advice and solutions , as well as lending solutions, to pri vate clients, in particular in the ultra high net worth and high net worth segments. The business is managed globally across the regions. – Personal & Corporate Banking provides comprehensive financial products and services to private, corporate and institutional clients , operat ing across all banking markets in Switzerland . – Asset Management is a large-scale and diversified global asset manager. It offers investment capab ilities and styles across all major traditional and alternative asset classes, as well as advisory support to institutions, wholesale intermediaries and wealth management clients globally . – The Investment Bank provides a range of services to institutional, corporate and wealth management clients globally, to help them raise capital, grow their businesses, invest and manage risks. Offerings include advisory services, capital markets, cash and derivatives trading across equities and fixed income and financing . – Group Functions – formerly named Corporate Center, is made up of the following major areas: Group Services (which consists of Technology, Corporate Services, Human Resources, Operations, Finance, Legal, Risk Control, Research and Analytics, Compliance, Regulatory & Governance, Communications & Branding and UBS in Society), Group Treasury and Non-core and Legacy Portfolio . Financial information about the four business divisions and Group Functions is presented separately in internal management reports . UBS AG’s internal accounting policies, which include management accounting policies and service level agreements, determ ine the revenues and expenses directly attributable to each reportable segment. Transactions between the reportable segments are carried out at internally agreed rates and are reflected in the operating results of the reportable segments. Revenue-sharing a greements are used to allocate external client revenues to reportable segments where several reportable segments are involved in the value creation chain. Total intersegment revenues for UBS AG are immaterial, as the majority of the revenues are allocated across the segments by means of revenue-sharing agreements. Interest income earned from managing UBS AG’s consolidated equity is allocated to the reportable segments based on average attributed equity and currency composition. Assets and liabilities of the reportable segments are funded through and invested with Group Functions, and the net interest margin is reflected in the results of each reportable segment. Segment assets are based on a third-party view and do not include intercompany balances. This vie w is in line with internal reporting to the GEB. If one operating segment is involved in an external transaction together with another operating segment or Group Functions, additional criteria are considered to determine the segment that will report the as sociated assets. This will include a consideration of which segment’s business needs are being addressed by the transaction and which segment is providing the funding and / or resources. Allocation of liabilities follows the same principles. Non-current as sets disclosed for segment reporting purposes represent assets that are expected to be recovered more than 12 months after the reporting date, excluding financial instruments, deferred tax assets and post-employment benefits . Effective from 1 January 2020, UBS AG only reports total operating expenses for each business division and no longer discloses a detailed cost breakdown by financial statement line item. This change streamlines reporting, ensures alignment with how UBS AG manages its cost base and has no effect on the i ncome s tatement, or on the net profit of any business division. Segment reporting USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions UBS AG For the year ended 31 December 2020 Net interest income 4,027 2,049 (17) 284 (555) 5,788 Non-interest income 1 13,107 1,859 2,993 9,224 504 27,686 Income 17,134 3,908 2,975 9,508 (52) 33,474 Credit loss (expense) / release (88) (257) (2) (305) (42) (695) Total operating income 17,046 3,651 2,974 9,203 (94) 32,780 Total operating expenses 13,080 2,390 1,520 6,762 1,329 25,081 Operating profit / (loss) before tax 3,965 1,261 1,454 2,441 (1,423) 7,699 Tax expense / (benefit) 1,488 Net profit / (loss) 6,211 Additional information Total assets 367,714 231,710 28,266 369,778 127,858 1,125,327 Additions to non-current assets 5 12 385 150 1,971 2,524 USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions UBS AG For the year ended 31 December 2019 Net interest income 3,947 1,993 (25) (669) (831) 4,415 Non-interest income 12,426 1,745 1,962 7,967 869 24,970 Income 16,373 3,737 1,938 7,298 38 29,385 Credit loss (expense) / release (20) (21) 0 (30) (7) (78) Total operating income 16,353 3,717 1,938 7,268 31 29,307 Total operating expenses 13,018 2,274 1,407 6,515 925 24,138 Operating profit / (loss) before tax 3,335 1,443 531 753 (893) 5,169 Tax expense / (benefit) 1,198 Net profit / (loss) 3,971 Additional information Total assets 2 309,766 209,512 34,565 316,058 102,028 971,927 Additions to non-current assets 68 10 0 1 4,935 5,014 USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions UBS AG For the year ended 31 December 2018 Net interest income 4,101 2,049 (29) (459) (690) 4,971 Non-interest income 12,700 2,169 1,881 8,539 499 25,788 Income 16,801 4,218 1,852 8,080 (191) 30,759 Credit loss (expense) / release (15) (56) 0 (38) (8) (117) Total operating income 16,786 4,162 1,852 8,042 (199) 30,642 Total operating expenses 13,574 2,363 1,427 6,600 1,220 25,184 Operating profit / (loss) before tax 3,212 1,799 425 1,442 (1,419) 5,458 Tax expense / (benefit) 1,345 Net profit / (loss) 4,113 Additional information Total assets 2 313,737 200,767 28,140 302,434 112,988 958,066 Additions to non-current assets 196 23 1 89 1,449 1,757 1 Includes a USD 631 million net gain on the sale of a majority stake in Fondcenter AG, of which USD 571 million was recognized in Asset Management and USD 60 million was recognized in Global Wealth Management. Refer to Note 29 for more information. 2 Information has been restated where applicable. Refer to Note 1b for more information. Note 2 b Segment reporting by geographic location The operati ng regions shown in the table below correspond to the regional management structure of UBS AG. The allocation of operating income to these regions reflects, and is consistent with, the basis on which the business is managed and its performance is evaluated . These allocations involve assumptions and judgments that management considers to be reasonable, and may be refined to reflect changes in estimates or management structure. The main principles of the allocation methodology are that client revenues are att ributed to the domicile of the given client and trading and portfolio management revenues are attributed to the country where the risk is managed. This revenue attribution is consistent with the mandate of the regional Presidents. Certain revenues, such as those related to N on-core and L egacy P ortfolio in Group Functions , are managed at a g roup level. These revenues are included in the Global line. The geographic analysis of non-current assets is based on the location of the entity in which the given assets are recorded. For the year ended 31 December 2020 Total operating income Total non-current assets USD billion Share % USD billion Share % Americas 13.0 40 9.0 45 of which: USA 11.7 36 8.4 42 Asia Pacific 6.0 18 1.4 7 Europe, Middle East and Africa (excluding Switzerland) 6.5 20 2.7 14 Switzerland 6.9 21 6.9 34 Global 0.5 2 0.0 0 Total 32.8 100 20.0 100 For the year ended 31 December 2019 Total operating income 1 Total non-current assets USD billion Share % USD billion Share % Americas 12.0 41 8.9 46 of which: USA 10.9 37 8.5 44 Asia Pacific 4.7 16 1.3 7 Europe, Middle East and Africa (excluding Switzerland) 5.8 20 2.6 13 Switzerland 6.7 23 6.5 34 Global 0.1 0 0.0 0 Total 29.3 100 19.3 100 For the year ended 31 December 2018 Total operating income 1 Total non-current assets USD billion Share % USD billion Share % Americas 12.6 41 7.4 46 of which: USA 11.5 37 7.0 43 Asia Pacific 4.9 16 0.8 5 Europe, Middle East and Africa (excluding Switzerland) 6.2 20 1.8 11 Switzerland 7.1 23 6.2 38 Global (0.2) (1) 0.0 0 Total 30.6 100 16.2 100 1 Effective as of 1 January 2020, the Investment Bank was realigned into two new business lines, Global Banking and Global Markets, which affects how the business is managed and therefore the allocation of operating income to the regions. The presentation of prior-year information reflects the new regional management structure of the Investment Bank.

Net interest income and other n

Net interest income and other net income from fair value changes on financial instruments	12 Months Ended
	Dec. 31, 2020
Disclosure Of Net Interest Income And Other Net Income From Financial Instruments Measured At Fair Value Through Profit Or Loss [Line Items]
Disclosure Of Net Interest Income And Other Net Income From Financial Instruments Measured At Fair Value Through Profit Or Loss Explanatory	Income statement notes Note 3 Net interest income and other net income from financial instruments measured at fair value through profit or loss For the year ended USD million 31.12.20 31.12.19 31.12.18 Net interest income from financial instruments measured at fair value through profit or loss 1,299 1,011 1,338 Other net income from financial instruments measured at fair value through profit or loss 6,960 6,842 6,960 of which: net gains / (losses) from financial liabilities designated at fair value 1 1,509 (8,748) 9,382 Total net income from financial instruments measured at fair value through profit or loss 8,259 7,853 8,298 Net interest income Net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income Interest income from loans and deposits 2 6,690 8,008 7,801 Interest income from securities financing transactions 3 862 2,005 1,567 Interest income from other financial instruments measured at amortized cost 335 364 266 Interest income from debt instruments measured at fair value through other comprehensive income 101 120 142 Interest income from derivative instruments designated as cash flow hedges 822 188 324 Total interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 8,810 10,684 10,100 Interest expense on loans and deposits 4 1,031 2,634 1,980 Interest expense on securities financing transactions 5 870 1,152 1,130 Interest expense on debt issued 2,237 3,285 3,281 Interest expense on lease liabilities 110 122 Total interest expense from financial instruments measured at amortized cost 4,247 7,194 6,391 Total net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 4,563 3,490 3,710 Net interest income from financial instruments measured at fair value through profit or loss Net interest income from financial instruments at fair value held for trading 841 1,214 1,105 Net interest income from brokerage balances 682 339 575 Net interest income from securities financing transactions at fair value not held for trading 6 77 116 115 Interest income from other financial instruments at fair value not held for trading 585 914 901 Interest expense on other financial instruments designated at fair value (886) (1,571) (1,357) Total net interest income from financial instruments measured at fair value through profit or loss 1,299 1,011 1,338 Total net interest income 5,862 4,501 5,048 1 Excludes fair value changes of hedges related to financial liabilities designated at fair value and foreign currency translation effects arising from translating foreign currency transactions into the respective functional currency, both of which are reported within Other net income from financial instruments measured at fair value through profit or loss. 2019 and 2018 included a net loss of USD 1,830 million and a net gain of USD 2,152 million, respectively, driven by financial liabilities related to unit-linked investment contracts, which are designated at fair value through profit or loss. This was offset by a net gain of USD 1,830 million and a net loss of USD 2,134 million in 2019 and 2018, respectively, related to financial assets for unit-linked investment contracts that are mandatorily measured at fair value through profit or loss not held for trading. 2 Consists of interest income from cash and balances at central banks, loans and advances to banks and customers, and cash collateral receivables on derivative instruments, as well as negative interest on amounts due to banks, customer deposits, and cash collateral payables on derivative instruments. 3 Includes interest income on receivables from securities financing transactions and negative interest, including fees, on payables from securities financing transactions. 4 Consists of interest expense on amounts due to banks, cash collateral payables on derivative instruments, and customer deposits, as well as negative interest on cash and balances at central banks, loans and advances to banks, and cash collateral receivables on derivative instruments. 5 Includes interest expense on payables from securities financing transactions and negative interest, including fees, on receivables from securities financing transactions. 6 Includes interest expense on securities financing transactions designated at fair value.
UBS AG
Disclosure Of Net Interest Income And Other Net Income From Financial Instruments Measured At Fair Value Through Profit Or Loss [Line Items]
Disclosure Of Net Interest Income And Other Net Income From Financial Instruments Measured At Fair Value Through Profit Or Loss Explanatory	Income statement notes Note 3 Net interest income and other net income from financial instruments measured at fair value through profit or loss For the year ended USD million 31.12.20 31.12.19 31.12.18 Net interest income from financial instruments measured at fair value through profit or loss 1,305 1,015 1,344 Other net income from financial instruments measured at fair value through profit or loss 6,930 6,833 6,953 of which: net gains / (losses) from financial liabilities designated at fair value 1 1,625 (8,748) 9,382 Total net income from financial instruments measured at fair value through profit or loss 8,235 7,848 8,297 Net interest income Net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income Interest income from loans and deposits 2 6,696 8,026 7,822 Interest income from securities financing transactions 3 862 2,005 1,567 Interest income from other financial instruments measured at amortized cost 335 364 266 Interest income from debt instruments measured at fair value through other comprehensive income 101 120 142 Interest income from derivative instruments designated as cash flow hedges 822 188 324 Total interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 8,816 10,703 10,121 Interest expense on loans and deposits 4 2,440 4,541 3,566 Interest expense on securities financing transactions 5 870 1,152 1,130 Interest expense on debt issued 918 1,491 1,797 Interest expense on lease liabilities 105 118 Total interest expense from financial instruments measured at amortized cost 4,333 7,303 6,494 Total net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 4,483 3,400 3,628 Net interest income from financial instruments measured at fair value through profit or loss Net interest income from financial instruments at fair value held for trading 847 1,218 1,111 Net interest income from brokerage balances 682 339 575 Net interest income from securities financing transactions at fair value not held for trading 6 77 116 115 Interest income from other financial instruments at fair value not held for trading 585 914 901 Interest expense on other financial instruments designated at fair value (886) (1,571) (1,357) Total net interest income from financial instruments measured at fair value through profit or loss 1,305 1,015 1,344 Total net interest income 5,788 4,415 4,971 1 Excludes fair value changes of hedges related to financial liabilities designated at fair value and foreign currency translation effects arising from translating foreign currency transactions into the respective functional currency, both of which are reported within Other net income from financial instruments measured at fair value through profit or loss. 2019 and 2018 included a net loss of USD 1,830 million and a net gain of USD 2,152 million, respectively, driven by financial liabilities related to unit-linked investment contracts, which are designated at fair value through profit or loss. This was offset by a net gain of USD 1,830 million and a net loss of USD 2,134 million in 2019 and 2018, respectively, related to financial assets for unit-linked investment contracts that are mandatorily measured at fair value through profit or loss not held for trading. 2 Consists of interest income from cash and balances at central banks, loans and advances to banks and customers, and cash collateral receivables on derivative instruments, as well as negative interest on amounts due to banks, customer deposits, and cash collateral payables on derivative instruments. 3 Includes interest income on receivables from securities financing transactions and negative interest, including fees, on payables from securities financing transactions. 4 Consists of interest expense on amounts due to banks, cash collateral payables on derivative instruments, customer deposits, and funding from UBS Group AG and its subsidiaries, as well as negative interest on cash and balances at central banks, loans and advances to banks, and cash collateral receivables on derivative instruments. 5 Includes interest expense on payables from securities financing transactions and negative interest, including fees, on receivables from securities financing transactions. 6 Includes interest expense on securities financing transactions designated at fair value.

Net fee and commission income

Net fee and commission income	12 Months Ended
Net fee and commission income	Dec. 31, 2020
Net fee And Commission Income [Line Items]
Disclosure Of Fee And Commission Income Expense Explanatory	Note 4 Net fee and commission income For the year ended USD million 31.12.20 31.12.19 31.12.18 Fee and commission income Underwriting fees 1,085 741 811 of which: equity underwriting fees 657 360 431 of which: debt underwriting fees 428 382 380 M&A and corporate finance fees 736 774 768 Brokerage fees 4,132 3,248 3,521 Investment fund fees 5,289 4,858 4,954 Portfolio management and related services 8,009 7,656 7,756 Other 1,710 1,832 1,786 Total fee and commission income 1 20,961 19,110 19,598 of which: recurring 13,009 12,544 12,911 of which: transaction-based 7,491 6,402 6,594 of which: performance-based 461 163 93 Fee and commission expense Brokerage fees paid 274 310 316 Distribution fees paid 589 590 580 Other 912 797 807 Total fee and commission expense 1,775 1,696 1,703 Net fee and commission income 19,186 17,413 17,895 of which: net brokerage fees 3,858 2,938 3,205 1 For the year ended 31 December 2020, reflects third-party fee and commission income of USD 12,475 million for Global Wealth Management, USD 1,426 million for Personal & Corporate Banking, USD 3,129 million for Asset Management, USD 3,882 million for the Investment Bank and USD 49 million for Group Functions (for the year ended 31 December 2019: USD 11,694 million for Global Wealth Management, USD 1,307 million for Personal & Corporate Banking, USD 2,659 million for Asset Management, USD 3,355 million for the Investment Bank and USD 94 million for Group Functions; for the year ended 31 December 2018: USD 12,059 million for Global Wealth Management, USD 1,338 million for Personal & Corporate Banking, USD 2,579 million for Asset Management, USD 3,525 million for the Investment Bank and USD 97 million for Group Functions).
UBS AG
Net fee And Commission Income [Line Items]
Disclosure Of Fee And Commission Income Expense Explanatory	Note 4 Net fee and commission income For the year ended USD million 31.12.20 31.12.19 31.12.18 Fee and commission income Underwriting fees 1,104 784 843 of which: equity underwriting fees 657 360 431 of which: debt underwriting fees 446 424 412 M&A and corporate finance fees 736 774 768 Brokerage fees 4,132 3,248 3,521 Investment fund fees 5,289 4,859 4,955 Portfolio management and related services 8,009 7,656 7,756 Other 1,712 1,836 1,789 Total fee and commission income 1 20,982 19,156 19,632 of which: recurring 13,010 12,545 12,911 of which: transaction-based 7,512 6,449 6,629 of which: performance-based 461 163 93 Fee and commission expense Brokerage fees paid 274 310 316 Distribution fees paid 589 590 580 Other 911 796 807 Total fee and commission expense 1,775 1,696 1,703 Net fee and commission income 19,207 17,460 17,930 of which: net brokerage fees 3,858 2,938 3,205 1 For the year ended 31 December 2020, reflects third-party fee and commission income of USD 12,475 million for Global Wealth Management, USD 1,427 million for Personal & Corporate Banking, USD 3,129 million for Asset Management, USD 3,901 million for the Investment Bank and USD 50 million for Group Functions (for the year ended 31 December 2019: USD 11,694 million for Global Wealth Management, USD 1,307 million for Personal & Corporate Banking, USD 2,659 million for Asset Management, USD 3,397 million for the Investment Bank and USD 98 million for Group Functions; for the year ended 31 December 2018: USD 12,059 million for Global Wealth Management, USD 1,338 million for Personal & Corporate Banking, USD 2,579 million for Asset Management, USD 3,557 million for the Investment Bank and USD 100 million for Group Functions).

Other income

Other income	12 Months Ended
Other income	Dec. 31, 2020
Other Income [Line Items]
Disclosure Of Other Operating Income Explanatory	Note 5 Other income For the year ended USD million 31.12.20 31.12.19 31.12.18 Associates, joint ventures and subsidiaries Net gains / (losses) from acquisitions and disposals of subsidiaries 1 635 2 (36) (290) Net gains / (losses) from disposals of investments in associates 0 4 46 Share of net profits of associates and joint ventures 84 3 46 529 4 Impairments related to associates 0 (1) 0 Total 719 13 284 Net gains / (losses) from disposals of financial assets measured at fair value through other comprehensive income 40 31 0 Income from properties 5 26 27 24 Net gains / (losses) from properties held for sale 76 6 (19) 40 Other 216 7 160 80 Total other income 1,076 212 428 1 Includes foreign exchange gains / (losses) reclassified from other comprehensive income related to the disposal or closure of foreign operations. 2 Includes a USD 631 million net gain on the sale of a majority stake in Fondcenter AG. Refer to Note 29 for more information. 3 Includes a valuation gain of USD 26 million on UBS’s equity ownership of SIX Group. 4 Includes a valuation gain of USD 460 million on UBS’s equity ownership of SIX Group related to the sale of SIX Payment Services to Worldline. 5 Includes rent received from third parties. 6 Includes net gains of USD 140 million arising from sale-and-leaseback transactions, primarily related to a property in Geneva, partly offset by remeasurement losses relating to properties that were reclassified as held for sale. 7 Includes a USD 215 million gain on the sale of intellectual property rights associated with the Bloomberg Commodity Index family.
UBS AG
Other Income [Line Items]
Disclosure Of Other Operating Income Explanatory	Note 5 Other income For the year ended USD million 31.12.20 31.12.19 31.12.18 Associates, joint ventures and subsidiaries Net gains / (losses) from acquisitions and disposals of subsidiaries 1 635 2 (36) (292) Net gains / (losses) from disposals of investments in associates 0 4 46 Share of net profits of associates and joint ventures 84 3 46 529 4 Impairments related to associates 0 (1) 0 Total 719 13 283 Net gains / (losses) from disposals of financial assets measured at fair value through other comprehensive income 40 31 0 Income from properties 5 25 27 24 Net gains / (losses) from properties held for sale 76 6 (19) 40 Income from shared services provided to UBS Group AG or its subsidiaries 422 464 478 Other 267 7 161 80 Total other income 1,549 677 905 1 Includes foreign exchange gains / (losses) reclassified from other comprehensive income related to the disposal or closure of foreign operations. 2 Includes a USD 631 million net gain on the sale of a majority stake in Fondcenter AG. Refer to Note 29 for more information. 3 Includes a valuation gain of USD 26 million on UBS AG’s equity ownership of SIX Group. 4 Includes a valuation gain of USD 460 million on UBS AG’s equity ownership of SIX Group related to the sale of SIX Payment Services to Worldline. 5 Includes rent received from third parties. 6 Includes net gains of USD 140 million arising from sale-and-leaseback transactions, primarily related to a property in Geneva, partly offset by remeasurement losses relating to properties that were reclassified as held for sale. 7 Includes a USD 215 million gain on the sale of intellectual property rights associated with the Bloomberg Commodity Index family.

Personnel expenses

Personnel expenses	12 Months Ended
Personnel expenses	Dec. 31, 2020
Personnel Expenses [Line Items]
Disclosure Of Employee Benefits Explanatory	Note 6 Personnel expenses For the year ended USD million 31.12.20 31.12.19 31.12.18 Salaries 1 7,023 6,518 6,448 Variable compensation – performance awards 2 3,209 3 2,755 2,995 of which: guarantees for new hires 25 29 43 Variable compensation – other 2 220 246 243 Financial advisor compensation 2,4 4,091 4,043 4,054 Contractors 375 381 489 Social security 899 3 799 791 Post-employment benefit plans 5 845 787 457 6 Other personnel expenses 561 3 555 654 Total personnel expenses 17,224 16,084 16,132 1 Includes role-based allowances. 2 Refer to Note 27 for more information. 3 During 2020, UBS modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees, resulting in an expense of approximately USD 280 million, of which USD 240 million is disclosed within Variable compensation – performance awards, USD 20 million within Social security and USD 20 million within Other personnel expenses. Refer to Note 1b for more information. 4 Financial advisor compensation consists of grid-based compensation based directly on compensable revenues generated by financial advisors and supplemental compensation calculated on the basis of financial advisor productivity, firm tenure, assets and other variables. It also includes expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements. 5 Refer to Note 26 for more information. 6 Changes to the pension fund of UBS in Switzerland announced in 2018 resulted in a reduction in the pension obligation recognized by UBS. As a consequence, a pre-tax gain of USD 241 million was recognized in the income statement in 2018, with no overall effect on total equity. Refer to Note 26 for more information.
UBS AG
Personnel Expenses [Line Items]
Disclosure Of Employee Benefits Explanatory	Note 6 Personnel expenses For the year ended USD million 31.12.20 31.12.19 31.12.18 Salaries 1 5,535 5,183 5,199 Variable compensation – performance awards 2 2,953 3 2,545 2,794 of which: guarantees for new hires 24 29 43 Variable compensation – other 2 201 225 220 Financial advisor compensation 2,4 4,091 4,043 4,054 Contractors 138 147 184 Social security 704 3 627 629 Post-employment benefit plans 5 597 569 363 6 Other personnel expenses 466 3 461 549 Total personnel expenses 14,686 13,801 13,992 1 Includes role-based allowances. 2 Refer to Note 27 for more information. 3 During 2020, UBS AG modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees, resulting in an expense of approximately USD 270 million, of which USD 240 million is disclosed within Variable compensation – performance awards, USD 20 million within Social security and USD 10 million within Other personnel expenses. Refer to Note 1b for more information. 4 Financial advisor compensation consists of grid-based compensation based directly on compensable revenues generated by financial advisors and supplemental compensation calculated on the basis of financial advisor productivity, firm tenure, assets and other variables. It also includes expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements. 5 Refer to Note 26 for more information. 6 Changes to the pension fund of UBS AG in Switzerland announced in 2018 resulted in a reduction in the pension obligation recognized by UBS AG. As a consequence, a pre-tax gain of USD 132 million was recognized in the income statement in 2018, with no overall effect on total equity. Refer to Note 26 for more information.

General and administrative expe

General and administrative expenses	12 Months Ended
General and administrative expenses	Dec. 31, 2020
General And Administrative Expenses [Line Items]
Disclosure Of General And Administrative Expense Explanatory	Note 7 General and administrative expenses For the year ended USD million 31.12.20 31.12.19 31.12.18 Occupancy 412 381 914 Rent and maintenance of IT and other equipment 813 718 654 Communication and market data services 615 627 638 Administration 565 551 590 of which: UK and German bank levies 1 55 41 58 Marketing and public relations 2 293 317 366 Travel and entertainment 169 378 425 Professional fees 675 882 1,015 Outsourcing of IT and other services 1,028 1,158 1,427 Litigation, regulatory and similar matters 3 197 165 657 Other 117 111 110 Total general and administrative expenses 4,885 5,288 6,797 1 The UK bank levy expenses of USD 38 million (USD 30 million for 2019 and USD 40 million for 2018) included a credit of USD 27 million (USD 31 million for 2019 and USD 45 million for 2018) related to prior years. 2 Includes charitable donations. 3 Reflects the net increase in provisions for litigation, regulatory and similar matters recognized in the income statement. Refer to Note 18 for more information. Also includes recoveries from third parties of USD 3 million in 2020 (USD 11 million in 2019 and USD 29 million in 2018).
UBS AG
General And Administrative Expenses [Line Items]
Disclosure Of General And Administrative Expense Explanatory	Note 7 General and administrative expenses For the year ended USD million 31.12.20 31.12.19 31.12.18 Occupancy 362 342 852 Rent and maintenance of IT and other equipment 346 339 326 Communication and market data services 505 517 520 Administration 5,499 5,176 5,383 of which: shared services costs charged by UBS Group AG or its subsidiaries 4,939 4,621 4,803 of which: UK and German bank levies 1 55 41 58 Marketing and public relations 2 225 233 277 Travel and entertainment 132 325 367 Professional fees 592 782 870 Outsourcing of IT and other services 522 610 729 Litigation, regulatory and similar matters 3 197 165 657 Other 108 97 95 Total general and administrative expenses 8,486 8,586 10,075 1 The UK bank levy expenses of USD 38 million (USD 30 million for 2019 and USD 40 million for 2018) included a credit of USD 27 million (USD 31 million for 2019 and USD 45 million for 2018) related to prior years. 2 Includes charitable donations. 3 Reflects the net increase in provisions for litigation, regulatory and similar matters recognized in the income statement. Refer to Note 18 for more information. Also includes recoveries from third parties of USD 3 million in 2020 (USD 11 million in 2019 and USD 29 million in 2018).

Income taxes

Income taxes	12 Months Ended
Income taxes	Dec. 31, 2020
Income Taxes [Line Items]
Disclosure Of Income Tax Explanatory	Note 8 Income taxes For the year ended USD million 31.12.20 31.12.19 31.12.18 Tax expense / (benefit) Swiss Current 482 365 469 Deferred 116 265 2,377 Total Swiss 598 630 2,846 Non-Swiss Current 749 426 575 Deferred 236 211 (1,953) Total non-Swiss 985 637 (1,378) Total income tax expense / (benefit) recognized in the income statement 1,583 1,267 1,468 Income tax recognized in the income statement Income tax expenses of USD 1, 583 million were recognized for the Group in 20 20 , representing an effective tax rate of 19 . 4 %. This include d Swiss tax expenses of USD 598 million and non-Swiss tax expenses of USD 985 million . The Swiss tax expenses included current tax expenses of USD 482 million related to taxable profits of UBS Switzerland AG and other Swiss entities. They also included deferred tax expenses of USD 116 million, which primarily reflect the amortization of deferred tax assets (DTAs) previously recognized in relation to dedu ctible temporary differences . The non-Swiss tax expenses inclu ded curren t tax expenses of USD 749 million related to taxable profits earned by non-Swiss subsidiaries and branches , and net deferred t ax expenses of USD 236 million. Expenses of USD 444 million , primarily relating to the amortization of DTA s previously recognized in relation to tax losses carried forward and deductible temporary differences of UBS Americas Inc. , were partly offset by a net benefit of USD 208 million in respect of the remeasurement of DTAs. This net benefit included net upward remeasurements of DTAs of USD 146 million for certain entities, primarily in connection with our business planning process, and USD 62 million in respect of additional DTA recognition that resulted from the contribution of real estate assets by UBS AG to UBS Americas Inc. and UBS Financial Services Inc. in 2020 . This allowed the full recognition of DTAs in respect of the associated historic real estate costs that were previously capitalized for US tax purposes under the elections that were made in the fourth quarter of 2018 . The effective tax rate for 2020 of 19. 4 % is lower than the Group’s normal tax rate of around 25% , mainly as a result of the aforementioned deferred tax benefit of USD 208 million in respect of the remeasurement of DTAs and also because no net tax expense was recognized in respect of the pre-tax gain of USD 631 million in relation to the sale of a majo rity stake in Fondcenter AG . For the year ended USD million 31.12.20 31.12.19 31.12.18 Operating profit / (loss) before tax 8,155 5,577 5,991 of which: Swiss 3,403 2,571 1,843 of which: non-Swiss 4,752 3,006 4,148 Income taxes at Swiss tax rate of 19.5% for 2020, 20.5% for 2019 and 21% for 2018 1,590 1,143 1,258 Increase / (decrease) resulting from: Non-Swiss tax rates differing from Swiss tax rate 110 82 55 Tax effects of losses not recognized 144 131 223 Previously unrecognized tax losses now utilized (212) (265) (25) Non-taxable and lower-taxed income (394) (351) (430) Non-deductible expenses and additional taxable income 385 732 905 Adjustments related to prior years – current tax (67) (5) 114 Adjustments related to prior years – deferred tax 12 (6) 26 Change in deferred tax recognition (381) (294) (795) Adjustments to deferred tax balances arising from changes in tax rates 234 (9) 0 Other items 161 107 137 Income tax expense / (benefit) 1,583 1,267 1,468 The components of operating profit before tax, and the differences between income tax expense reflected in the financial statements and the amounts calculated at the Swiss tax rate, are provided in the table on the previous page and explained below. Compo nent Description Non-Swiss tax rates differing from Swiss tax rate To the extent that Group profits or losses arise outside Switzerland, the applicable local tax rate may differ from the Swiss tax rate. This item reflects, for such profits, an adjustment from the tax expense that would arise at the Swiss tax rate to the tax expense that would arise at the applicable local tax rate. Similarly, it reflects, for such losses, an adjustment from the tax benefit that would arise at the Swiss tax rate to the tax benefit that would arise at the applicable local tax rate. Tax effects of losses not recognized This item relates to tax losses of entities arising in the year that are not recognized as DTAs and where no tax benefit arises in relation to those losses. Therefore, the tax benefit calculated by applying the local tax rate to those losses as described above is reversed. Previously unrecognized tax losses now utilized This item relates to taxable profits of the year that are offset by tax losses of previous years for which no DTAs were previously recorded. Consequently, no current tax or deferred tax expense arises in relation to those taxable profits and the tax expens e calculated by applying the local tax rate on those profits is reversed. Non-taxable and lower - taxed income This item relates to tax deductions for the year in respect of permanent differences. These include deductions in respect of profits that are eith er not taxable or are taxable at a lower rate of tax than the local tax rate. They also include deductions made for tax purposes, which are not reflected in the accounts. Non-deductible expenses and additional taxable income This item relates to additiona l taxable income for the year in respect of permanent differences. These include income that is recognized for tax purposes by an entity but is not included in its profit that is reported in the financial statements, as well as expenses for the year that a re non-deductible (e.g., client entertainment costs are not deductible in certain locations). Adjustments related to prior years – current tax This item relates to adjustments to current tax expense for prior years (e.g., if the tax payable for a year is agreed with the tax authorities in an amount that differs from the amount previously reflected in the financial statements). Adjustments related to prior years – deferred tax This item relates to adjustments to deferred tax positions recognized in prior y ears (e.g., if a tax loss for a year is fully recognized and the amount of the tax loss agreed with the tax authorities is expected to differ from the amount previously recognized as DTAs in the accounts). Change in deferred tax recognition This item relates to changes in DTAs, including changes in DTAs previously recognized resulting from reassessments of expected future taxable profits. It also includes changes in temporary differences in the year, for which deferred tax is not recognized. Adjustments to deferred tax balances arising from changes in tax rates This item relates to remeasurements of DTAs and liabilities recognized due to changes in tax rates. These have the effect of changing the future tax saving that is expected from tax lo sses or deductible tax differences and therefore the amount of DTAs recognized or, alternatively, changing the tax cost of additional taxable income from taxable temporary differences and therefore the deferred tax liability. Other items Other items inclu de other differences between profits or losses at the local tax rate and the actual local tax expense or benefit, including movements in provisions for uncertain positions in relation to the current year and other items. Income tax recognized directly in equity A net tax expense of USD 237 million was recognized in Other comprehensive income (201 9 : net expense of USD 3 26 million) and a net tax benefit of USD 1 8 million recognized in Share premium (201 9 : benefit of USD 11 million). Deferred tax assets and liabilities The Group has gross DTAs, valuation allowances and recognized DTAs related to tax loss carry-forwards and deductible temporary differences, and also deferred tax liabilities in respect of taxable temporary differences, as shown in the table below. The valu ation allowances reflect DTAs that were not recognized because, as of the last remeasurement period, management did not consider it probable that there would be sufficient future taxable profits available to utilize the related tax loss carry-forwards and deductible temporary differences . Of the recognized DTAs as of 31 December 20 20 , USD 8 . 8 bi llion related to the US and USD 0. 4 billion relat ed to other locations (as of 31 December 201 9 , USD 9. 3 bi llion related to the US and USD 0. 2 billion related to other locations). The recognition of DTAs is supported by forecasts of taxable profits for the entities concerned. In addition, tax planning opportunities are available that would result in additional future taxable income and these would be utilized, if neces sary. As of 31 December 20 20 , the G roup has recognized DTAs of USD 138 million (31 December 201 9 : USD 75 million) in respect of entities that incurred losses in either the current or preceding year. Deferred tax liabilities are recognized in respect of inv estments in subsidiaries, branches and associates, and interests in joint arrangements, except to the extent that the Group can control the timing of the reversal of the associated taxable temporary difference and it is probable that such will not revers e in the foreseeable future. However, as of 31 December 2020, this exception was not considered to apply to any taxable temporary differences . USD million 31.12.20 31.12.19 1 Deferred tax assets 2 Gross Valuation allowance Recognized Gross Valuation allowance Recognized Tax loss carry-forwards 14,108 (8,715) 5,393 14,826 (8,861) 5,965 Temporary differences 4,384 (565) 3,819 4,197 (613) 3,583 of which: related to real estate costs capitalized for US tax purposes 2,268 0 2,268 2,219 0 2,219 of which: related to compensation and benefits 1,128 (173) 955 1,091 (179) 912 of which: related to trading assets 23 (6) 16 99 (5) 93 of which: other 966 (386) 580 788 (429) 359 Total deferred tax assets 18,492 (9,280) 9,212 19,022 (9,474) 9,548 Deferred tax liabilities Goodwill and intangible assets 31 29 Cash flow hedges 425 156 Other 108 126 Total deferred tax liabilities 564 311 1 Comparative-period information has been restated. Refer to Note 1b for more information. 2 Less deferred tax liabilities as applicable. As of 31 December 20 20 , USD 1 6 . 3 billion of the unrecognized tax losses carried forward related to the US (these primarily related to UBS AG’s US branch) , USD 1 3 . 8 billion related to the UK and US D 5.0 billion related to other locations (as of 31 December 201 9 , USD 17 . 8 billion related to the US, USD 14. 9 billion related to the UK and USD 5 . 0 billion related to other locations). In general, US federal tax losses incurred prior to 31 December 2017 can be carried forward for 20 years. However, US federal tax losses incurred after 31 December 2017 and UK tax losses can be carried forward indefinitely, although the utilization of such losses is limited to 80% of the entity’s future year taxable profits for the US and generally to 25% thereof for the UK. The amounts of US tax loss carry-forwards that are included in the table below are based on their amount for federal tax purposes rather than for state and local tax purposes . Unrecognized tax loss carry-forwards USD million 31.12.20 31.12.19 Within 1 year 146 13 From 2 to 5 years 638 609 From 6 to 10 years 13,257 14,712 From 11 to 20 years 3,858 4,030 No expiry 17,227 18,364 Total 35,127 37,728
UBS AG
Income Taxes [Line Items]
Disclosure Of Income Tax Explanatory	Note 8 Income taxes For the year ended USD million 31.12.20 31.12.19 31.12.18 Tax expense / (benefit) Swiss Current 417 336 434 Deferred 107 246 2,326 Total Swiss 524 582 2,760 Non-Swiss Current 715 402 537 Deferred 248 214 (1,952) Total non-Swiss 963 616 (1,415) Total income tax expense / (benefit) recognized in the income statement 1,488 1,198 1,345 Income tax recognized in the income statement Income tax expenses of USD 1,488 million were recognized for UBS AG in 20 20 , representing an effective tax rate of 19.3 %. This include d Swiss tax expenses of USD 524 million and non-Swiss tax expenses of USD 963 million . The Swiss tax expenses included current tax expenses of USD 417 mil lion related to taxable profits of UBS Switzerland AG and other Swiss entities. They also included deferred tax expenses of USD 107 million, which primarily reflect the amortization of deferred tax assets (DTAs) previously recognized in relation to deducti ble temporary differences . The non-Swiss tax expenses inclu ded curren t tax expenses of USD 715 million related to taxable profits earned by non-Swiss subsidiaries and branches , and net deferred t ax expenses of USD 248 million. Expenses of USD 456 million , primarily relating to the amortization of DTAs previously recognized in relation to tax losses carried forward and deductible temporary differences of UBS Americas Inc. , were partly offset by a net benefit of USD 208 million in respect of the remeasurement of DTAs. This net benefit included net upward remeasurements of DTAs of USD 146 million for certain entities, primarily in connection with our business planning process, and USD 62 million in respect of additional DTA recognition that resulted from the contribution of real estate assets by UBS AG to UBS Americas Inc. and UBS Financial Services Inc. in 2020 . This allowed the full recognition of DTAs in respect of the associated historic real estate costs that were previously capitalized for US tax purposes under the elections that were made in the fourth quarter of 2018 . The effective tax rate for 2020 of 19.3 % is lower than UBS AG ’s normal tax rate of around 25% , mainly as a result of the aforementioned deferred tax benefit of USD 208 million in respect of the remeasurement of DTAs and also because no net tax expense was recognized in respect of the pre-tax gain of USD 631 million in relation to the sale of a majo rity stake in Fondcenter AG . For the year ended USD million 31.12.20 31.12.19 31.12.18 Operating profit / (loss) before tax 7,699 5,169 5,458 of which: Swiss 3,042 2,297 1,427 of which: non-Swiss 4,657 2,872 4,031 Income taxes at Swiss tax rate of 19.5% for 2020, 20.5% for 2019 and 21% for 2018 1,501 1,060 1,146 Increase / (decrease) resulting from: Non-Swiss tax rates differing from Swiss tax rate 96 72 68 Tax effects of losses not recognized 144 131 222 Previously unrecognized tax losses now utilized (212) (265) (25) Non-taxable and lower-taxed income (381) (305) (419) Non-deductible expenses and additional taxable income 373 713 883 Adjustments related to prior years – current tax (66) 1 114 Adjustments related to prior years – deferred tax 18 (6) 27 Change in deferred tax recognition (383) (293) (802) Adjustments to deferred tax balances arising from changes in tax rates 235 (9) 0 Other items 163 99 130 Income tax expense / (benefit) 1,488 1,198 1,345 The components of operating profit before tax, and the differences between income tax expense reflected in the financial statements and the amounts calculated at the Swiss tax rate, are provided in the table on the previous page and explained below. Compo nent Description Non-Swiss tax rates differing from Swiss tax rate To the extent that UBS AG profits or losses arise outside Switzerland, the applicable local tax rate may differ from the Swiss tax rate. This item reflects, for such profits, an adjustment from the tax expense that would arise at the Swiss tax rate to the tax expense that would ar ise at the applicable local tax rate. Similarly, it reflects, for such losses, an adjustment from the tax benefit that would arise at the Swiss tax rate to the tax benefit that would arise at the applicable local tax rate. Tax effects of losses not recognized This item relates to tax losses of entities arising in the year that are not recognized as DTAs and where no tax benefit arises in relation to those losses. Therefore, the tax benefit calculated by applying the local tax rate to those losses as described above is reversed. Previously unrecognized tax losses now utilized This item relates to taxable profits of the year that are offset by tax losses of previous years for which no DTAs were previously recorded. Consequently, no current tax or deferred tax expense arises in relation to those taxable profits and the tax expense calculated by applying the local tax rate on those profits is reversed. Non-taxable and lower - taxed income This item relates to tax deductions for the year in respect of permanent differences. These include deductions in respect of profits that are either not taxable or are taxable at a lower rate of tax than the local tax rate. They also include deductions made for tax purposes, which are not reflected in the accounts. N on-deductible expenses and additional taxable income This item relates to additional taxable income for the year in respect of permanent differences. These include income that is recognized for tax purposes by an entity but is not included in its profit th at is reported in the financial statements, as well as expenses for the year that are non-deductible (e.g., client entertainment costs are not deductible in certain locations). Adjustments related to prior years – current tax This item relates to adjustme nts to current tax expense for prior years (e.g., if the tax payable for a year is agreed with the tax authorities in an amount that differs from the amount previously reflected in the financial statements). Adjustments related to prior years – deferred t ax This item relates to adjustments to deferred tax positions recognized in prior years (e.g., if a tax loss for a year is fully recognized and the amount of the tax loss agreed with the tax authorities is expected to differ from the amount previously reco gnized as DTAs in the accounts). Change in deferred tax recognition This item relates to changes in DTAs, including changes in DTAs previously recognized resulting from reassessments of expected future taxable profits. It also includes changes in temporary differences in the year, for which deferred tax is not recognized. Adjustments to deferred tax balances arising from changes in t ax rates This item relates to remeasurements of DTAs and liabilities recognized due to changes in tax rates. These have the effect of changing the future tax saving that is expected from tax losses or deductible tax differences and therefore the amount of DTAs recognized or, alternatively, changing the tax cost of additional taxable income from taxable temporary differences and therefore the deferred tax liability. Other items Other items include other differences between profits or losses at the local tax rate and the actual local tax expense or benefit, including movements in provisions for uncertain positions in relation to the current year and other items. Income tax recognized directly in equity A net tax expense of USD 258 million was recognized in Other comprehensive income (201 9 : net expense of USD 327 million) and a net tax benefit of USD 1 million recognized in Share premium (201 9 : benefit of USD 11 million). Deferred tax assets and liabilities UBS AG has gross DTAs, valuation allowances and recognized DTAs related to tax loss carry-forwards and deductible temporary differences, and also deferred tax liabilities in respect of taxable temporary differences, as shown in the table below. The valuation all owances reflect DTAs that were not recognized because, as of the last remeasurement period, management did not consider it probable that there would be sufficient future taxable profits available to utilize the related tax loss carry-forwards and deductibl e temporary differences . Of the recognized DTAs as of 31 December 20 20 , USD 8 . 8 bi llion related to the US and USD 0. 4 billion relat ed to other locations (as of 31 December 201 9 , USD 9. 3 bi llion related to the US and USD 0. 2 billion related to other locations). The recognition of DTAs is supported by forecasts of taxable profits for the entities concerned. In addition, tax planning opportunities are available that would result in additional future taxable income and these would be utilized, if necessary. As of 31 December 20 20 , UBS AG has recognized DTAs of USD 138 million (31 December 201 9 : USD 75 million) in respect of entities that incurred losses in either the current or preceding year. Deferred tax liabilities are recognized in respect of investments in subsidiaries, branches and associates, and interests in joint arrangements, except to the extent that UBS AG can control the timing of the reversal of the associated taxable temporary difference and it is probable that such will not revers e in the foresee able future. However, as of 31 December 2020, this exception was not considered to apply to any taxable temporary differences . USD million 31.12.20 31.12.19 1 Deferred tax assets 2 Gross Valuation allowance Recognized Gross Valuation allowance Recognized Tax loss carry-forwards 14,108 (8,715) 5,393 14,826 (8,861) 5,965 Temporary differences 4,343 (561) 3,782 4,169 (610) 3,559 of which: related to real estate costs capitalized for US tax purposes 2,268 0 2,268 2,219 0 2,219 of which: related to compensation and benefits 1,112 (173) 939 1,086 (179) 907 of which: related to trading assets 23 (5) 16 99 (5) 93 of which: other 940 (383) 558 765 (426) 340 Total deferred tax assets 18,450 (9,276) 9,174 18,995 (9,471) 9,524 Deferred tax liabilities Goodwill and intangible assets 31 29 Cash flow hedges 425 156 Other 102 126 Total deferred tax liabilities 558 311 1 Comparative-period information has been restated. Refer to Note 1b for more information. 2 Less deferred tax liabilities as applicable. As of 31 December 20 20 , USD 1 6 . 3 billion of the unrecognized tax losses carried forward related to the US (these primarily related to UBS AG’s US branch) , USD 1 3 . 8 billion related to the UK and USD 5.0 billion related to other locations (as of 31 December 201 9 , USD 17 . 8 billion related to the US, USD 14. 9 billion related to the UK and USD 5 . 0 billion related to other locations). In general, US federal tax losses incurred prior to 31 December 2017 can be carried forward for 20 years. However, US federal tax losses incurred after 31 December 2017 and UK tax losses can be carried forward indefinitely, although the utilization of su ch losses is limited to 80% of the entity’s future year taxable profits for the US and generally to 25% thereof for the UK. The amounts of US tax loss carry-forwards that are included in the table below are based on their amount for federal tax purposes ra ther than for state and local tax purposes . Unrecognized tax loss carry-forwards USD million 31.12.20 31.12.19 Within 1 year 146 13 From 2 to 5 years 638 609 From 6 to 10 years 13,257 14,712 From 11 to 20 years 3,858 4,030 No expiry 17,227 18,364 Total 35,127 37,728

Financial assets at amortized c

Financial assets at amortized cost and other positions in scope of expected credit loss measurement	12 Months Ended
	Dec. 31, 2020
Disclosure Of Provision Matrix [Line Items]
Disclosure Of Provision Matrix Explanatory	Balance sheet notes Note 9 Financial assets at amortized cost and other positions in scope of expected credit loss measurement The tables on the following pages provide information about financial instruments and certain other credit lines that are subject to expected credit loss ( ECL ) requirements . UBS ’s ECL disclosure segments or “ECL segments” are aggregated portfolios based on shared risk characteristics and on the same or similar rat ing methods applied. The key segments are presented in the table below . › Refer to Note 2 0 for more information about expected credit loss measurement Segment Segment description Description of credit risk sensitivity Business division / Group Functions Private clients with mortgages Lending to private clients secured by owner-occupied real estate and personal account overdrafts of those clients Sensitive to the interest rate environment, un employmen t levels , real estate collateral values and other regional aspects – Personal & Corporate Banking – Global Wealth Management Real estate financing Rental or income-producing real estate financing to private and corporate clients secured by real estate Sensitive to GDP development s , the interest rate environment , real estate collateral values and other regional aspects – Personal & Corporate Banking – G lobal Wealth Management – Investment Bank Large corporate clients Lending to large corporate and multi - national clients Sensitive to GDP development s , un employment levels , seasonalit y, business cycles and collateral values (diverse collateral , including real estate and other collateral types) – Personal & Corporate Banking – Investment Bank SME clients Lending to small and medium-sized corporate clients Sensitive to GDP development s , un emp loyment levels, the interest rate environment and, to some extent, seasonality , business cycles and collateral values (diverse collateral , including real estate and other collateral types) – Personal & Corporate Banking Lombard Loans secured by pledges of marketable securities, guarantees and other forms of collateral Sensitive to the market (e.g., changes in collateral values ) – Global Wealth Management Credit cards Credit card solutions in Switzerland and the US Sensitive to un employment levels – Personal & Corporate Banking – Global Wealth Management Commodity trade finance Working capital financing of commodity traders, generally extended on a self-liquidating transactional basis Sensitive primarily to the strength of individual transaction structures and collateral values (price volatility of commodities) , as the primary source for debt service is directly linked to the shipments financed – Personal & Corporate Banking Financial intermediaries and hedge fund s Lending to financial institutions and pension funds, including exposures to broker-dealers and clearing houses Sensitive to unemployment level s , the quality and volatility index changes, equity market and GDP development s , regulatory changes and politica l risk – Personal & Corporate Banking – Investment Bank › Refer to Note 20f for more details regarding sensitivity The tables below and on the following pages provide ECL exposure and ECL allowance and provision information about financial instruments and certain non-financial instruments that are subject to ECL . USD million 31.12.20 Carrying amount 1 ECL allowances Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 158,231 158,231 0 0 0 0 0 0 Loans and advances to banks 15,444 15,260 184 0 (16) (9) (5) (1) Receivables from securities financing transactions 74,210 74,210 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 32,737 32,737 0 0 0 0 0 0 Loans and advances to customers 379,528 356,948 20,341 2,240 (1,060) (142) (215) (703) of which: Private clients with mortgages 148,175 138,769 8,448 959 (166) (35) (93) (39) of which: Real estate financing 43,429 37,568 5,838 23 (63) (15) (44) (4) of which: Large corporate clients 15,161 12,658 2,029 474 (279) (27) (40) (212) of which: SME clients 14,872 11,990 2,254 628 (310) (19) (23) (268) of which: Lombard 133,850 133,795 0 55 (36) (5) 0 (31) of which: Credit cards 1,558 1,198 330 30 (38) (11) (11) (16) of which: Commodity trade finance 3,269 3,214 43 12 (106) (5) 0 (101) Other financial assets measured at amortized cost 27,194 26,377 348 469 (133) (34) (9) (90) of which: Loans to financial advisors 2,569 1,982 137 450 (108) (27) (5) (76) Total financial assets measured at amortized cost 687,345 663,763 20,873 2,709 (1,211) (187) (229) (795) Financial assets measured at fair value through other comprehensive income 8,258 8,258 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 695,603 672,021 20,873 2,709 (1,211) (187) (229) (795) Total exposure ECL provisions Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 17,081 14,687 2,225 170 (63) (14) (15) (34) of which: Large corporate clients 3,710 2,048 1,549 113 (20) (4) (5) (12) of which: SME clients 1,310 936 326 48 (13) (1) (1) (11) of which: Financial intermediaries and hedge funds 7,637 7,413 224 0 (17) (7) (9) 0 of which: Lombard 641 633 0 8 (2) 0 0 (2) of which: Commodity trade finance 1,441 1,416 25 0 (2) (1) 0 0 Irrevocable loan commitments 41,372 36,894 4,374 104 (142) (74) (68) 0 of which: Large corporate clients 24,209 20,195 3,950 64 (121) (63) (58) 0 Forward starting reverse repurchase and securities borrowing agreements 3,247 3,247 0 0 0 0 0 0 Committed unconditionally revocable credit lines 40,134 35,233 4,792 108 (50) (29) (21) 0 of which: Real estate financing 6,328 5,811 517 0 (12) (5) (7) 0 of which: Large corporate clients 4,909 2,783 2,099 27 (9) (2) (7) 0 of which: SME clients 5,827 4,596 1,169 63 (16) (12) (4) 0 of which: Lombard 9,671 9,671 0 0 0 (1) 0 0 of which: Credit cards 8,661 8,220 430 11 (8) (6) (2) 0 of which: Commodity trade finance 242 242 0 0 0 0 0 0 Irrevocable committed prolongation of existing loans 3,282 3,277 5 0 (2) (2) 0 0 Total off-balance sheet financial instruments and other credit lines 105,116 93,337 11,396 382 (257) (119) (104) (34) Total allowances and provisions (1,468) (306) (333) (829) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. USD million 31.12.19 Carrying amount 1 ECL allowances Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 107,068 107,068 0 0 0 0 0 0 Loans and advances to banks 12,447 12,367 80 0 (6) (4) (1) (1) Receivables from securities financing transactions 84,245 84,245 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 23,289 23,289 0 0 0 0 0 0 Loans and advances to customers 326,786 309,499 15,538 1,749 (764) (82) (123) (559) of which: Private clients with mortgages 132,646 124,063 7,624 959 (110) (15) (55) (41) of which: Real estate financing 38,481 32,932 5,532 17 (43) (5) (34) (4) of which: Large corporate clients 9,703 9,184 424 94 (117) (15) (4) (98) of which: SME clients 11,786 9,817 1,449 521 (303) (17) (15) (271) of which: Lombard 112,893 112,796 0 98 (22) (4) 0 (18) of which: Credit cards 1,661 1,314 325 22 (35) (8) (14) (13) of which: Commodity trade finance 2,844 2,826 8 10 (81) (5) 0 (77) Other financial assets measured at amortized cost 22,980 21,953 451 576 (143) (35) (13) (95) of which: Loans to financial advisors 2,877 2,341 334 202 (109) (29) (11) (70) Total financial assets measured at amortized cost 576,815 558,420 16,069 2,326 (915) (124) (137) (655) Financial assets measured at fair value through other comprehensive income 6,345 6,345 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 583,159 564,765 16,069 2,326 (915) (124) (137) (655) Total exposure ECL provisions Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 18,142 17,757 304 82 (42) (8) (1) (33) of which: Large corporate clients 3,687 3,461 203 24 (10) (1) 0 (9) of which: SME clients 1,180 1,055 67 58 (24) 0 0 (23) of which: Financial intermediaries and hedge funds 7,966 7,950 16 0 (5) (4) 0 0 of which: Lombard 622 622 0 0 (1) 0 0 (1) of which: Commodity trade finance 2,334 2,320 13 0 (1) (1) 0 0 Irrevocable loan commitments 27,547 27,078 419 50 (35) (30) (5) 0 of which: Large corporate clients 18,735 18,349 359 27 (27) (24) (3) 0 Forward starting reverse repurchase and securities borrowing agreements 1,657 1,657 0 0 0 0 0 0 Committed unconditionally revocable credit lines 35,092 33,848 1,197 46 (34) (17) (17) 0 of which: Real estate financing 5,242 4,934 307 0 (16) (3) (13) 0 of which: Large corporate clients 4,274 4,188 69 17 (1) (1) 0 0 of which: SME clients 4,787 4,589 171 27 (9) (8) (1) 0 of which: Lombard 7,976 7,975 0 1 0 0 0 0 of which: Credit cards 7,890 7,535 355 0 (6) (4) (2) 0 of which: Commodity trade finance 344 344 0 0 0 0 0 0 Irrevocable committed prolongation of existing loans 3,289 3,285 0 4 (3) (3) 0 0 Total off-balance sheet financial instruments and other credit lines 85,728 83,626 1,920 182 (114) (58) (23) (33) Total allowances and provisions (1,029) (181) (160) (688) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. Coverage ratios are calculated for the core loan portfolio by taking ECL allowances and pro visions divided by the gross carrying amount of the exposures. Core loan exposure is defined as the sum of Loans and advances to customers and Loans to financial advisors . These ratios are infl uenced by the following key factors: – lending in Switzerland includes government backed COVID-19 loans; – L ombard loans are generally secured with marketable securities in portfolios that are , as a rule , highly diversified , with strict lending policies that are intended to ensure that credit risk is minimal under most circumstances ; – m ortgage loans to private clients and real estate financing are controlled by conservative eligibility criteria , including low loan-to-value ratio s and strong debt service capabilit ies ; for example, more than 99% of the aggregated amount of Swiss residential mortgage loans would continue to be fully covered by real estate collateral even if the value of that collateral decreased by 20% , for a 30% reduction, more than 98% would be covered ; – the amount of u nsecured retail lending (including credit cards) is insignificant ; – contractual maturities in the loan portfolio, which are a factor in the calculation of ECLs, are generally short, with a large part of the l oan portfolio having contractual maturities of 12 months or less; and – write-offs of ECL allowances against the gross loan balances when all or part of a financial asset is deemed uncollectible o r forgiven, reduces the coverage ratios. Coverage ratios for core loan portfolio 31.12.20 Gross carrying amount (USD million) ECL coverage (bps) On-balance sheet Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Private clients with mortgages 148,341 138,803 8,540 998 11 2 108 390 Real estate financing 43,492 37,583 5,883 27 15 4 75 1,414 Large corporate clients 15,440 12,684 2,069 686 181 21 192 3,089 SME clients 15,183 12,010 2,277 896 204 16 101 2,991 Lombard 133,886 133,800 0 86 3 0 0 3,592 Credit cards 1,596 1,209 342 46 240 91 333 3,488 Commodity trade finance 3,375 3,219 43 113 315 16 2 8,939 Other loans and advances to customers 19,274 17,781 1,402 91 31 14 25 3,563 Loans to financial advisors 2,677 2,009 142 526 404 135 351 1,446 Total 1 383,266 359,099 20,697 3,470 30 5 106 2,247 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Private clients with mortgages 6,285 6,083 198 3 7 6 16 197 Real estate financing 7,056 6,576 481 0 21 9 185 0 Large corporate clients 32,828 25,026 7,598 205 46 27 92 565 SME clients 9,121 7,239 1,734 148 40 19 63 779 Lombard 14,178 14,170 0 8 2 1 0 1,941 Credit cards 8,661 8,220 430 11 9 8 44 0 Commodity trade finance 1,683 1,658 25 0 10 8 15 8,279 Financial intermediaries and hedge funds 7,690 7,242 448 0 26 13 248 166 Other off-balance sheet commitments 14,366 13,876 482 8 13 7 11 12,414 Total 2 101,869 90,090 11,396 382 25 13 91 894 1 Includes Loans and advances to customers of USD 380,589 million and Loans to financial advisors of USD 2,677 million which are presented on the balance sheet line Other assets measured at amortized cost. 2 Excludes Forward starting reverse repurchase and securities borrowing agreements. Coverage ratios for core loan portfolio 31.12.19 Gross carrying amount (USD million) ECL coverage (bps) On-balance sheet Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Private clients with mortgages 132,756 124,077 7,679 1,000 8 1 72 406 Real estate financing 38,524 32,937 5,567 21 11 2 62 1,765 Large corporate clients 9,819 9,199 429 192 119 16 100 5,088 SME clients 12,089 9,834 1,464 791 251 18 104 3,420 Lombard 112,915 112,799 0 116 2 0 0 1,566 Credit cards 1,696 1,322 339 35 205 60 404 3,718 Commodity trade finance 2,925 2,831 8 87 278 17 3 8,844 Other loans and advances to customers 16,824 16,582 176 67 31 9 15 5,750 Loans to financial advisors 2,987 2,370 344 272 366 122 305 2,570 Total 1 330,536 311,951 16,005 2,580 26 4 83 2,436 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Private clients with mortgages 5,520 5,466 51 2 7 6 100 245 Real estate financing 6,046 5,715 326 4 29 9 390 0 Large corporate clients 26,706 26,009 630 67 14 10 59 1,319 SME clients 6,782 6,407 273 101 53 15 115 2,265 Lombard 9,902 9,895 0 7 1 0 0 1,403 Credit cards 7,890 7,535 355 0 8 5 52 0 Commodity trade finance 2,678 2,664 13 0 5 5 9 2,713 Financial intermediaries and hedge funds 9,676 9,651 25 0 5 5 71 83 Other off-balance sheet commitments 8,872 8,626 246 0 5 4 34 22,592 Total 2 84,070 81,969 1,920 182 14 7 120 1,822 1 Includes Loans and advances to customers of USD 327,550 million and Loans to financial advisors of USD 2,987 million which are presented on the balance sheet line Other assets measured at amortized cost. 2 Excludes Forward starting reverse repurchase and securities borrowing agreements.
UBS AG
Disclosure Of Provision Matrix [Line Items]
Disclosure Of Provision Matrix Explanatory	Note 9 Financial assets at amortized cost and other positions in scope of expected credit loss measurement The tables on the following pages provide information about financial instruments and certain other credit lines that are subject to expected credit loss ( ECL ) requirements . UBS AG’s ECL disclosure segments or “ECL segments” are aggregated portfolios based on shared risk characteristics and on the same or similar rating methods applied. The key segments are presented in the table below . › Refer to Note 2 0 for more information about expected credit loss measurement Segment Segment description Description of credit risk sensitivity Business division / Group Functions Private clients with mortgages Lending to private clients secured by owner-occupied real estate and personal account overdrafts of those clients Sensitive to the interest rate environment, un employmen t levels, real estate collateral value s and other regional aspects – Personal & Corporate Banking – Global Wealth Management Real estate financing Rental or income-producing real estate financing to private and corporate clients secured by real estate Sensitive to GDP development s , the interest rate environment , real estate collateral value s and other regional aspects – Personal & Corporate Banking – Global Wealth Management – Investment Bank Large corporate clients Lending to large corporate and multi - national clients Sensitive to GDP development s , un employment levels , seasonalit y, business cycles and collateral values (diverse collateral , including real estate and other collateral types) – Personal & Corporate Banking – Investment Bank SME clients Lending to small and medium-sized corporate clients Sensitive to GDP development s , unemp loyment levels , the interest rate environment and, to some extent, seasonality , business cycles and collateral values (diverse collateral , including real estate and other collateral types) – Personal & Corporate Banking Lombard Loans secured by pledges of marketable securities, guarantees and other forms of collateral Sensitive to the market (e.g., changes in collateral values ) – Global Wealth Management Credit cards Credit card solutions in Switzerland and the US Sensitive to un employment levels – Personal & Corporate Banking – Global Wealth Management Commodity trade finance Working capital financing of commodity traders, generally extended on a self-liquidating transactional basis Sensitive primarily to the strength of individual transaction structures and collateral values (price volatility of commodities) , as the primary source for debt service is directly linked to the shipments financed – Personal & Corporate Banking Financial intermediaries and hedge funds Lending to financial institutions and pension funds, including exposures to broker-dealers and clearing houses Sensitive to unemployment levels, the quality and volatility index changes, equity market and GDP development s , regulatory changes and political risk – Perso nal & Corporate Banking – Investment Bank › Refer to Note 20f for more details regarding sensitivity The tables below and on the following pages provide ECL exposure and ECL allowance and provision information about financial instruments and certain non-financial instruments that are subject to ECL . USD million 31.12.20 Carrying amount 1 ECL allowances Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 158,231 158,231 0 0 0 0 0 0 Loans and advances to banks 15,344 15,160 184 0 (16) (9) (5) (1) Receivables from securities financing transactions 74,210 74,210 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 32,737 32,737 0 0 0 0 0 0 Loans and advances to customers 380,977 358,396 20,341 2,240 (1,060) (142) (215) (703) of which: Private clients with mortgages 148,175 138,769 8,448 959 (166) (35) (93) (39) of which: Real estate financing 43,429 37,568 5,838 23 (63) (15) (44) (4) of which: Large corporate clients 15,161 12,658 2,029 474 (279) (27) (40) (212) of which: SME clients 14,872 11,990 2,254 628 (310) (19) (23) (268) of which: Lombard 133,850 133,795 0 55 (36) (5) 0 (31) of which: Credit cards 1,558 1,198 330 30 (38) (11) (11) (16) of which: Commodity trade finance 3,269 3,214 43 12 (106) (5) 0 (101) Other financial assets measured at amortized cost 27,219 26,401 348 469 (133) (34) (9) (90) of which: Loans to financial advisors 2,569 1,982 137 450 (108) (27) (5) (76) Total financial assets measured at amortized cost 688,717 665,135 20,873 2,709 (1,211) (187) (229) (795) Financial assets measured at fair value through other comprehensive income 8,258 8,258 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 696,976 673,394 20,873 2,709 (1,211) (187) (229) (795) Total exposure ECL provisions Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 17,081 14,687 2,225 170 (63) (14) (15) (34) of which: Large corporate clients 3,710 2,048 1,549 113 (20) (4) (5) (12) of which: SME clients 1,310 936 326 48 (13) (1) (1) (11) of which: Financial intermediaries and hedge funds 7,637 7,413 224 0 (17) (7) (9) 0 of which: Lombard 641 633 0 8 (2) 0 0 (2) of which: Commodity trade finance 1,441 1,416 25 0 (2) (1) 0 0 Irrevocable loan commitments 41,372 36,894 4,374 104 (142) (74) (68) 0 of which: Large corporate clients 24,209 20,195 3,950 64 (121) (63) (58) 0 Forward starting reverse repurchase and securities borrowing agreements 3,247 3,247 0 0 0 0 0 0 Committed unconditionally revocable credit lines 42,077 37,176 4,792 108 (50) (29) (21) 0 of which: Real estate financing 6,328 5,811 517 0 (12) (5) (7) 0 of which: Large corporate clients 4,909 2,783 2,099 27 (9) (2) (7) 0 of which: SME clients 5,827 4,596 1,169 63 (16) (12) (4) 0 of which: Lombard 9,671 9,671 0 0 0 (1) 0 0 of which: Credit cards 8,661 8,220 430 11 (8) (6) (2) 0 of which: Commodity trade finance 242 242 0 0 0 0 0 0 Irrevocable committed prolongation of existing loans 3,282 3,277 5 0 (2) (2) 0 0 Total off-balance sheet financial instruments and other credit lines 107,059 95,281 11,396 382 (257) (119) (104) (34) Total allowances and provisions (1,468) (306) (333) (829) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. USD million 31.12.19 Carrying amount 1 ECL allowances Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 107,068 107,068 0 0 0 0 0 0 Loans and advances to banks 12,379 12,298 80 0 (6) (4) (1) (1) Receivables from securities financing transactions 84,245 84,245 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 23,289 23,289 0 0 0 0 0 0 Loans and advances to customers 327,992 310,705 15,538 1,749 (764) (82) (123) (559) of which: Private clients with mortgages 132,646 124,063 7,624 959 (110) (15) (55) (41) of which: Real estate financing 38,481 32,932 5,532 17 (43) (5) (34) (4) of which: Large corporate clients 9,703 9,184 424 94 (117) (15) (4) (98) of which: SME clients 11,786 9,817 1,449 521 (303) (17) (15) (271) of which: Lombard 112,893 112,796 0 98 (22) (4) 0 (18) of which: Credit cards 1,661 1,314 325 22 (35) (8) (14) (13) of which: Commodity trade finance 2,844 2,826 8 10 (81) (5) 0 (77) Other financial assets measured at amortized cost 23,012 21,985 451 576 (143) (35) (13) (95) of which: Loans to financial advisors 2,877 2,341 334 202 (109) (29) (11) (70) Total financial assets measured at amortized cost 577,985 559,590 16,069 2,326 (915) (124) (137) (655) Financial assets measured at fair value through other comprehensive income 6,345 6,345 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 584,329 565,935 16,069 2,326 (915) (124) (137) (655) Total exposure ECL provisions Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 18,142 17,757 304 82 (42) (8) (1) (33) of which: Large corporate clients 3,687 3,461 203 24 (10) (1) 0 (9) of which: SME clients 1,180 1,055 67 58 (24) 0 0 (23) of which: Financial intermediaries and hedge funds 7,966 7,950 16 0 (5) (4) 0 0 of which: Lombard 622 622 0 0 (1) 0 0 (1) of which: Commodity trade finance 2,334 2,320 13 0 (1) (1) 0 0 Irrevocable loan commitments 27,547 27,078 419 50 (35) (30) (5) 0 of which: Large corporate clients 18,735 18,349 359 27 (27) (24) (3) 0 Forward starting reverse repurchase and securities borrowing agreements 1,657 1,657 0 0 0 0 0 0 Committed unconditionally revocable credit lines 36,979 35,735 1,197 46 (34) (17) (17) 0 of which: Real estate financing 5,242 4,934 307 0 (16) (3) (13) 0 of which: Large corporate clients 4,274 4,188 69 17 (1) (1) 0 0 of which: SME clients 4,787 4,589 171 27 (9) (8) (1) 0 of which: Lombard 7,976 7,975 0 1 0 0 0 0 of which: Credit cards 7,890 7,535 355 0 (6) (4) (2) 0 of which: Commodity trade finance 344 344 0 0 0 0 0 0 Irrevocable committed prolongation of existing loans 3,289 3,285 0 4 (3) (3) 0 0 Total off-balance sheet financial instruments and other credit lines 87,614 85,513 1,920 182 (114) (58) (23) (33) Total allowances and provisions (1,029) (181) (160) (688) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. Coverage ratios are calculated for the core loan portfolio by taking ECL allowances and pro visions divided by the gross carrying amount of the exposures. Core loan exposure is defined as the sum of Loans and advances to customers and Loans to financial adv isors . These ratios are influenced by the following key factors: – lending in Switzerland includes government backed COVID-19 loans; – L ombard loans are generally secured with marketable securities in portfolios that are , as a rule , highly diversified , with strict lending policies that are intended to ensure that credit risk is minimal under most circumstances ; – m ortgage loans to private clients and real estate financing are controlled by conservative eligibility criteria , including low loan-to-value ratio s and strong debt service capabilit ies ; for example, more than 99% of the aggregated amount of Swiss residential mortgage loans would continue to be fully covered by real estate collateral even if t he value of that collateral decreased by 20% , for a 30% reduction , more than 98% would be covered; – the amount of u nsecured retail lending (including credit cards) is insignificant ; – contractual maturities in the loan portfolio , which are a factor in the calculation of ECL s , are generally short, with a large part of the loan portfolio having contractual matur ities of 12 month s or less; and – write-offs of ECL allowances against the gross loan balances when all or part of a financial asset is deemed uncollecti ble or forgiven, reduces the coverage ratios. Coverage ratios for core loan portfolio 31.12.20 Gross carrying amount (USD million) ECL coverage (bps) On-balance sheet Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Private clients with mortgages 148,341 138,803 8,540 998 11 2 108 390 Real estate financing 43,492 37,583 5,883 27 15 4 75 1,414 Large corporate clients 15,440 12,684 2,069 686 181 21 192 3,089 SME clients 15,183 12,010 2,277 896 204 16 101 2,991 Lombard 133,886 133,800 0 86 3 0 0 3,592 Credit cards 1,596 1,209 342 46 240 91 333 3,488 Commodity trade finance 3,375 3,219 43 113 315 16 2 8,939 Other loans and advances to customers 20,722 19,229 1,402 91 29 13 25 3,563 Loans to financial advisors 2,677 2,009 142 526 404 135 351 1,446 Total 1 384,714 360,547 20,697 3,470 30 5 106 2,247 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Private clients with mortgages 6,285 6,083 198 3 7 6 16 197 Real estate financing 7,056 6,576 481 0 21 9 185 0 Large corporate clients 32,828 25,026 7,598 205 46 27 92 565 SME clients 9,121 7,239 1,734 148 40 19 63 779 Lombard 14,178 14,170 0 8 2 1 0 1,941 Credit cards 8,661 8,220 430 11 9 8 44 0 Commodity trade finance 1,683 1,658 25 0 10 8 15 8,279 Financial intermediaries and hedge funds 7,690 7,270 448 0 26 13 248 166 Other off-balance sheet commitments 16,309 15,792 482 8 12 6 11 12,414 Total 2 103,812 92,034 11,396 382 25 13 91 894 1 Includes Loans and advances to customers of USD 382,036 million and Loans to financial advisors of USD 2,677 million which are presented on the balance sheet line Other assets measured at amortized cost. 2 Excludes Forward starting reverse repurchase and securities borrowing agreements. Coverage ratios for core loan portfolio 31.12.19 Gross carrying amount (USD million) ECL coverage (bps) On-balance sheet Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Private clients with mortgages 132,756 124,077 7,679 1,000 8 1 72 406 Real estate financing 38,524 32,937 5,567 21 11 2 62 1,765 Large corporate clients 9,819 9,199 429 192 119 16 100 5,088 SME clients 12,089 9,834 1,464 791 251 18 104 3,420 Lombard 112,915 112,799 0 116 2 0 0 1,566 Credit cards 1,696 1,322 339 35 205 60 404 3,718 Commodity trade finance 2,925 2,831 8 87 278 17 3 8,844 Other loans and advances to customers 18,031 17,788 176 67 29 8 15 5,750 Loans to financial advisors 2,987 2,370 344 272 366 122 305 2,570 Total 1 331,743 313,158 16,005 2,580 26 4 83 2,436 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Private clients with mortgages 5,520 5,466 51 2 7 6 100 245 Real estate financing 6,046 5,715 326 4 29 9 390 0 Large corporate clients 26,706 26,009 630 67 14 10 59 1,319 SME clients 6,782 6,407 273 101 53 15 115 2,265 Lombard 9,902 9,895 0 7 1 0 0 1,403 Credit cards 7,890 7,535 355 0 8 5 52 0 Commodity trade finance 2,678 2,664 13 0 5 5 9 2,713 Financial intermediaries and hedge funds 9,676 9,651 25 0 5 5 71 83 Other off-balance sheet commitments 10,759 10,513 246 0 4 3 34 22,592 Total 2 85,957 83,856 1,920 182 13 7 120 1,822 1 Includes Loans and advances to customers of USD 328,756 million and Loans to financial advisors of USD 2,987 million which are presented on the balance sheet line Other assets measured at amortized cost. 2 Excludes Forward starting reverse repurchase and securities borrowing agreements.

Derivative instruments

Derivative instruments	12 Months Ended
Derivative instruments	Dec. 31, 2020
Derivative [Line Items]
Disclosure Of Derivative Financial Instruments Explanatory	Note 10 Derivative instruments O verview Over-the-counter (OTC) derivative contracts are usually traded under a standardized International Swaps and Derivatives Association (ISDA) master agreement between UBS and its counterparties. Terms are negotiated directly with counterparties and the contracts have industry-standard settlement mechanisms prescribed by ISDA. Regulators in various jurisdictions have beg u n a phased introduction of rules requiring the payment and collection of initial and variation margin on certain OTC derivative contracts, which may have a bearing on their price and other relevant terms. Due to challenges brought on by COVID-19 , the International Organization of Securities Commissions (IOSCO) has extended the deadline for the completion of the final phase-in of margin requirements for non-centrally cleared derivatives , to 1 September 2022. Other derivative contracts are standardized in terms of their amounts and settlement dates, and are bought and sold on regulated exchanges. These are commonly referred to as exchange-traded derivatives (ETD) contracts. Exchanges offer the benefits of pricing transparency, standardized daily settleme nt of changes in value and , consequently , reduced credit risk. Most of the Group ’s derivative transactions relate to sales and market-making activity. Sales activities include the structuring and marketing of derivative products to customers to enable them to take, transfer, modify or reduce current or expected risks. Market-making aims to directly support the facilitation and execution of client activity, and involves quoting bid and offer prices to other market participants with the intention of generatin g revenues based on spread and volume. The Group also uses various derivative instruments for hedging purposes. › Refer to Notes 16 and 21 for more information about derivative instruments › Refer to Note 25 for more information about derivatives designated in hedge accounting relationships Risks of derivative instruments The derivative financial assets shown on the balance sheet can be an important component of the Group ’s credit exposure, however, the positive replacement values related to a respective counterparty are rarely an adequate reflection of the Group ’s credit exposure in its derivatives business with that counterparty. This is generally the case because, on the one hand, replacement values can increase over time (potential future exposure), while , on the other hand, exposure may be mitigated by entering into master netting agreements and bilateral collateral arrangements. Both the exposure m easures used internally by the Group to control credit risk and the capital requirements imposed by regulators reflect these additional factors. › Refer to Note 22 for more information about derivative financial assets and liabilities after consideration of netting potential allowed under enforceable netting arrangements › Refer to the “Risk management and control” section of this report for more information about the risks arising from derivative instruments Contin gent collateral features of derivative liabilities Certain derivative instruments contain contingent collateral or termination features triggered upon a downgrade of the published credit ratings of the Group in the normal course of business. Based on UBS ’s credit ratings as of 31 December 2020 , USD 0.0 billion, USD 0.5 billion and USD 1.1 billion would have been required for contractual obligations related to OTC derivatives in the event of a one-notch, two-notch and three-notch reduction in long-term credit ratings, respectively. In evaluating UBS ’ s liquidity requirements, UBS considers additional collateral or termination payments that would be required in the event of a reduction in UBS’s long-term credit ratings, and a corresponding reduction in UBS’s shor t-term ratings. Derivative instruments 31.12.20 31.12.19 USD billion Derivative financial assets Notional amounts related to derivative financial assets 2 Derivative financial liabilities Notional amounts related to derivative financial liabilities 2 Other notional amounts 2,3 Derivative financial assets Notional amounts related to derivative financial assets 2 Derivative financial liabilities Notional amounts related to derivative financial liabilities 2 Other notional amounts 2,3 Interest rate contracts 50.9 928.0 43.9 880.4 11,291.5 42.6 1,020.2 36.6 975.2 11,999.2 of which: forward contracts (OTC) 1 0.0 19.8 0.4 21.9 2,602.5 0.0 16.3 0.3 19.6 3,136.8 of which: swaps (OTC) 40.8 407.0 30.9 364.8 8,105.2 34.3 454.7 26.2 402.9 8,086.0 of which: options (OTC) 10.1 447.5 12.5 460.5 8.1 464.8 10.0 486.1 of which: futures (ETD) 480.6 546.9 of which: options (ETD) 0.0 53.6 0.0 33.1 103.3 0.0 84.4 0.0 66.6 229.5 Credit derivative contracts 2.4 57.6 2.9 64.8 2.0 70.2 3.0 69.9 of which: credit default swaps (OTC) 2.2 53.6 2.6 62.3 1.7 65.0 2.2 66.0 of which: total return swaps (OTC) 0.1 1.9 0.3 2.5 0.3 2.0 0.8 3.3 Foreign exchange contracts 68.7 2,951.1 70.5 2,820.4 1.4 52.5 3,173.4 54.0 2,993.8 1.2 of which: forward contracts (OTC) 27.3 779.1 29.0 853.3 22.4 935.3 23.4 966.6 of which: swaps (OTC) 34.3 1,727.3 34.4 1,567.3 22.8 1,573.2 23.8 1,418.5 of which: options (OTC) 7.1 440.9 7.1 394.7 7.3 660.9 6.8 604.9 Equity contracts 34.8 449.6 41.2 581.3 91.3 22.8 420.3 25.5 534.5 122.1 of which: swaps (OTC) 6.4 89.4 9.8 108.4 4.0 81.3 5.5 96.3 of which: options (OTC) 7.0 87.1 10.9 146.2 5.0 88.6 6.8 144.1 of which: futures (ETD) 67.9 84.9 of which: options (ETD) 10.7 273.1 11.3 326.8 23.5 7.2 250.4 7.8 294.1 37.2 of which: agency transactions (ETD) 4 10.7 9.1 6.6 5.4 Commodity contracts 2.2 57.8 2.0 49.7 10.1 1.8 56.1 1.7 60.0 12.6 of which: swaps (OTC) 0.5 17.7 0.8 18.0 0.4 13.8 0.6 15.1 of which: options (OTC) 1.0 23.5 0.7 17.8 1.0 27.4 0.4 23.6 of which: futures (ETD) 9.3 12.0 of which: forward contracts (ETD) 8.0 6.3 5.9 4.9 Loan commitments measured at FVTPL (OTC) 5 0.0 10.2 0.0 7.1 Unsettled purchases of non-derivative financial instruments 6 0.3 18.3 0.2 10.0 0.1 16.6 0.1 6.9 Unsettled sales of non-derivative financial instruments 6 0.2 17.2 0.3 12.9 0.1 15.4 0.1 9.7 Total derivative instruments, based on IFRS netting 7 159.6 4,479.5 161.1 4,429.7 11,394.4 121.8 4,772.2 120.9 4,657.0 12,135.1 1 Includes certain forward starting repurchase and reverse repurchase agreements that are classified as measured at fair value through profit or loss and are recognized within derivative instruments. The notional amounts related to these instruments were previously presented in the former Note 34 under Forward starting transactions (refer to the “Consolidated financial statements” section of the Annual Report 2019 for more information). Starting with this report, the presentation of these notionals has been aligned with the fair values presented in this table and prior periods have been amended to ensure comparability. 2 In cases where derivative financial instruments are presented on a net basis on the balance sheet, the respective notional amounts of the netted derivative financial instruments are still presented on a gross basis. 3 Other notional amounts relate to derivatives that are cleared through either a central counterparty or an exchange. The fair value of these derivatives is presented on the balance sheet net of the corresponding cash margin under Cash collateral receivables on derivative instruments and Cash collateral payables on derivative instruments and was not material for all periods presented. 4 Notional amounts of exchange-traded agency transactions and OTC-cleared transactions entered into on behalf of clients are not disclosed as they have a significantly different risk profile. 5 These notional amounts relate to derivative loan commitments that were previously presented in the former Note 34 under loan commitments measured at fair value (refer to the “Consolidated financial statements” section of the Annual Report 2019 for more information). Starting with this report, the presentation of these notionals has been aligned with the fair values of the derivative loan commitments presented in this table and prior periods have been amended to ensure comparability. 6 Changes in the fair value of purchased and sold non-derivative financial instruments between trade date and settlement date are recognized as derivative financial instruments. 7 Derivative financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of the entity and all of the counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. Refer to Note 22 for more information on netting arrangements. On a notional amount basis, approximately 50 % of OTC interest rate contra cts held as of 31 December 2020 ( 31 December 2019 : 54%) mature within one year , 30 % ( 31 December 2019 : 28%) within one to five years and 20 % ( 31 December 2019 : 18%) after five years. Notional amounts of interest rate contracts cleared through either a central counterparty or an exchange that are legally settled on a daily basis are presented under Other notional amounts in the table above and are categorized into maturity buckets on the basis of contractual maturities of the cleared underlying derivative contracts.
UBS AG
Derivative [Line Items]
Disclosure Of Derivative Financial Instruments Explanatory	Note 10 Derivative instruments Overview Over-the-counter (OTC) derivative contracts are usually traded under a standardized International Swaps and Derivatives Association (ISDA) master agreement between UBS AG and its counterparties. Terms are negotiated directly with counterparties and the contracts have industry-standard settlement mechanisms prescribed by IS DA. Regulators in various jurisdictions have beg u n a phased introduction of rules requiring the payment and collection of initial and variation margin on certain OTC derivative contracts, which may have a bearing on their price and other relevant terms. Du e to challenges brought on by COVID-19 , the International Organization of Securities Commissions (IOSCO) has extended the deadline for the completion of the final phase-in of margin requirements for non-centrally cleared derivatives , to 1 September 2022. O ther derivative contracts are standardized in terms of their amounts and settlement dates, and are bought and sold on regulated exchanges. These are commonly referred to as exchange-traded derivatives (ETD) contracts. Exchanges offer the benefits of pricin g transparency, standardized daily settlement of changes in value and , consequently , reduced credit risk. Most of UBS AG’s derivative transactions relate to sales and market-making activity. Sales activities include the structuring and marketing of derivative products to customers to enable them to take, transfer, modify or reduce current or expected risks. Market-making aims to directly support the facilitation and execution of client activity, and involves quoting bid and offer prices to other mark et participants with the intention of generating revenues based on spread and volume. UBS AG also uses various derivative instruments for hedging purposes. › Refer to Notes 16 and 21 for more information about deriva tive instruments › Refer to Note 25 for more information about deriv atives designated in hedge accounting relationships Risks of derivative instruments The derivative financial assets shown on the balance sheet can be an important com ponent of UBS AG ’s credit exposure, however, the positive replacement values related to a respective counterparty are rare ly an adequate reflection of UBS AG ’s credit exposure in its derivatives business with that counterparty. This is generally the case because, on the one hand, replacement values can increase over time (potential future exposure), while , on the other hand, exposure may be mitigated by entering into master netting agreements and bilateral collateral arrangements. Both the exposure measure s used internally by UBS AG to control credit risk and the capital requirements imposed by regulators reflect these additional factors. › Refer to Note 22 for more information about derivative financial assets and liabilities after cons ideration of netting potential allowed under enforceable netting arrangements › Refer to the “Risk management and control” section of this report for more information about the risks arising from derivative instruments Contingent collateral features of derivative liabilities Certain derivative instruments contain contingent collateral or termination features triggered upon a downgrade of the published credit ratings of UBS AG in the normal course of business. Based on UB S AG ’s credit ratings as of 31 December 2020 , USD 0.0 billion, USD 0.3 billion and USD 0.8 billion would have been required for contractual obligations related to OTC derivatives in the event of a one-notch, two-notch and three-notch reduction in long-term credit ratings, respectively. In evaluating UBS AG ’s liquidity requirements, UBS AG considers additional collateral or termination payments that would be required in the event of a reduction in UBS AG ’s long-term credit ratings, and a corresponding reduction in U BS AG ’s short-term ratings. Derivative instruments 31.12.20 31.12.19 USD billion Derivative financial assets Notional amounts related to derivative financial assets 2 Derivative financial liabilities Notional amounts related to derivative financial liabilities 2 Other notional amounts 2,3 Derivative financial assets Notional amounts related to derivative financial assets 2 Derivative financial liabilities Notional amounts related to derivative financial liabilities 2 Other notional amounts 2,3 Interest rate contracts 50.9 928.0 43.9 880.4 11,291.5 42.6 1,020.2 36.6 975.2 11,999.2 of which: forward contracts (OTC) 1 0.0 19.8 0.4 21.9 2,602.5 0.0 16.3 0.3 19.6 3,136.8 of which: swaps (OTC) 40.8 407.0 30.9 364.8 8,105.2 34.3 454.7 26.2 402.9 8,086.0 of which: options (OTC) 10.1 447.5 12.5 460.5 8.1 464.8 10.0 486.1 of which: futures (ETD) 480.6 546.9 of which: options (ETD) 0.0 53.6 0.0 33.1 103.3 0.0 84.4 0.0 66.6 229.5 Credit derivative contracts 2.4 57.6 2.9 64.8 2.0 70.2 3.0 69.9 of which: credit default swaps (OTC) 2.2 53.6 2.6 62.3 1.7 65.0 2.2 66.0 of which: total return swaps (OTC) 0.1 1.9 0.3 2.5 0.3 2.0 0.8 3.3 Foreign exchange contracts 68.7 2,951.2 70.5 2,820.4 1.4 52.5 3,173.6 54.0 2,993.8 1.2 of which: forward contracts (OTC) 27.3 779.2 29.0 853.3 22.4 935.5 23.4 966.6 of which: swaps (OTC) 34.3 1,727.3 34.4 1,567.3 22.8 1,573.2 23.8 1,418.5 of which: options (OTC) 7.1 440.9 7.1 394.7 7.3 660.9 6.8 604.9 Equity contracts 34.8 449.6 41.2 581.3 91.3 22.8 420.3 25.5 534.5 122.1 of which: swaps (OTC) 6.4 89.4 9.8 108.4 4.0 81.3 5.5 96.3 of which: options (OTC) 7.0 87.1 10.9 146.2 5.0 88.6 6.8 144.1 of which: futures (ETD) 67.9 84.9 of which: options (ETD) 10.7 273.1 11.3 326.8 23.5 7.2 250.4 7.8 294.1 37.2 of which: agency transactions (ETD) 4 10.7 9.1 6.6 5.4 Commodity contracts 2.2 57.8 2.0 49.7 10.1 1.8 56.1 1.7 60.0 12.6 of which: swaps (OTC) 0.5 17.7 0.8 18.0 0.4 13.8 0.6 15.1 of which: options (OTC) 1.0 23.5 0.7 17.8 1.0 27.4 0.4 23.6 of which: futures (ETD) 9.3 12.0 of which: forward contracts (ETD) 0.0 8.0 0.0 6.3 0.0 5.9 0.0 4.9 Loan commitments measured at FVTPL (OTC) 5 0.0 10.2 0.0 7.1 Unsettled purchases of non-derivative financial instruments 6 0.3 18.3 0.2 10.0 0.1 16.6 0.1 6.9 Unsettled sales of non-derivative financial instruments 6 0.2 17.2 0.3 12.9 0.1 15.4 0.1 9.7 Total derivative instruments, based on IFRS netting 7 159.6 4,479.6 161.1 4,429.7 11,394.4 121.8 4,772.4 120.9 4,657.0 12,135.1 1 Includes certain forward starting repurchase and reverse repurchase agreements that are classified as measured at fair value through profit or loss and are recognized within derivative instruments. The notional amounts related to these instruments were previously presented in the former Note 34 under Forward starting transactions (refer to the “Consolidated financial statements” section of the Annual Report 2019 for more information). Starting with this report, the presentation of these notionals has been aligned with the fair values presented in this table and prior periods have been amended to ensure comparability. 2 In cases where derivative financial instruments are presented on a net basis on the balance sheet, the respective notional amounts of the netted derivative financial instruments are still presented on a gross basis. 3 Other notional amounts relate to derivatives that are cleared through either a central counterparty or an exchange. The fair value of these derivatives is presented on the balance sheet net of the corresponding cash margin under Cash collateral receivables on derivative instruments and Cash collateral payables on derivative instruments and was not material for all periods presented. 4 Notional amounts of exchange-traded agency transactions and OTC-cleared transactions entered into on behalf of clients are not disclosed as they have a significantly different risk profile. 5 These notional amounts relate to derivative loan commitments that were previously presented in the former Note 34 under loan commitments measured at fair value (refer to the “Consolidated financial statements” section of the Annual Report 2019 for more information). Starting with this report, the presentation of these notionals has been aligned with the fair values of the derivative loan commitments presented in this table and prior periods have been amended to ensure comparability. 6 Changes in the fair value of purchased and sold non-derivative financial instruments between trade date and settlement date are recognized as derivative financial instruments. 7 Derivative financial assets and liabilities are presented net on the balance sheet if UBS AG has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of the entity and all of the counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. Refer to Note 22 for more information on netting arrangements. On a notional amount basis, approximately 50 % of OTC interest rate contracts held as of 31 December 2020 ( 31 December 2019 : 54%) mature within one year , 30 % ( 31 December 2019 : 28%) within one to five years and 20 % ( 31 December 2019 : 18%) after five years. Notional amounts of interest rate contracts cleared through either a central counterparty or an exchange that are legally settled on a daily basis are presented under Other notional amounts in the table above and are categorized into maturity buckets on the basis of contractual maturities of the cleared underlying derivative contr acts.

Financial assets measured at fa

Financial assets measured at fair value through OCI	12 Months Ended
Financial assets measured at fair value through OCI	Dec. 31, 2020
Financial Assets Measured At Fair Value Through Other Comprehensive Income [Line Items]
Financial Assets Measured At Fair Value Through Other Comprehensive Income Explanatory	Note 11 Financial assets measured at fair value through other comprehensive income USD million 31.12.20 31.12.19 Financial assets measured at fair value through other comprehensive income 1 Debt instruments Government and government agencies 8,155 6,162 of which: USA 7,727 5,814 Banks 103 178 Corporates and other 0 4 Total financial assets measured at fair value through other comprehensive income 8,258 6,345 Unrealized gains, before tax 204 41 Unrealized (losses), before tax (4) (25) Net unrealized gains / (losses), before tax 200 16 Net unrealized gains / (losses), after tax 151 15 1 Refer to Note 21c for more information about product type and fair value hierarchy categorization. Refer also to Note 9 and Note 20 for more information about expected credit loss measurement.
UBS AG
Financial Assets Measured At Fair Value Through Other Comprehensive Income [Line Items]
Financial Assets Measured At Fair Value Through Other Comprehensive Income Explanatory	Note 11 Financial assets measured at fair value through other comprehensive income USD million 31.12.20 31.12.19 Financial assets measured at fair value through other comprehensive income 1 Debt instruments Government and government agencies 8,155 6,162 of which: USA 7,727 5,814 Banks 103 178 Corporates and other 0 4 Total financial assets measured at fair value through other comprehensive income 8,258 6,345 Unrealized gains, before tax 204 41 Unrealized (losses), before tax (4) (25) Net unrealized gains / (losses), before tax 200 16 Net unrealized gains / (losses), after tax 151 15 1 Refer to Note 21c for more information about product type and fair value hierarchy categorization. Refer also to Note 9 and Note 20 for more information about expected credit loss measurement.

Property, equipment and softwar

Property, equipment and software	12 Months Ended
Property, equipment and software	Dec. 31, 2020
Property Equipment And Software [Line Items]
Disclosure of property, equipment and software [text block]	Note 12 Property, equipment and software At historical cost less accumulated depreciation USD million Owned properties Leased properties 1 Leasehold improve- ments IT hardware and communication equipment Internally generated software Purchased software Other machines and equipment Projects in progress 2020 2019 Historical cost Balance at the beginning of the year 7,650 3,745 3,004 1,559 6,176 485 799 1,014 24,431 23,321 Additions 26 443 2 37 192 131 75 20 1,389 2,312 1,931 Disposals / write-offs 3 (315) (8) (169) (245) (135) (76) (42) 0 (990) (636) Reclassifications 4 (461) 0 217 11 1,015 3 34 (1,410) (590) (398) Foreign currency translation 686 70 85 65 75 19 31 43 1,074 213 Balance at the end of the year 7,586 4,249 3,174 1,581 7,262 506 843 1,036 26,238 24,431 Accumulated depreciation Balance at the beginning of the year 4,466 519 1,768 1,053 2,906 358 559 0 11,628 10,619 Depreciation 173 535 236 170 753 61 69 0 1,997 1,728 Impairment 5 0 4 1 0 67 0 0 0 72 37 Disposals / write-offs 3 (200) (3) (164) (243) (129) (76) (42) 0 (855) (614) Reclassifications 4 (332) 0 5 0 0 0 0 0 (328) (254) Foreign currency translation 406 28 70 41 35 13 23 0 616 112 Balance at the end of the year 4,513 1,082 1,917 1,021 3,631 356 608 0 13,129 11,628 Net book value Net book value at the beginning of the year 3,184 3,226 1,236 506 3,270 126 241 1,014 12,804 12,702 Net book value at the end of the year 3,073 3,167 1,258 560 3,630 150 235 1,036 6 13,109 12,804 1 Represents right-of-use assets recognized by UBS as lessee. Includes immaterial leased IT equipment. The total cash outflow for leases during 2020 was USD 679 million (2019: USD 641 million). Interest expense on lease liabilities is included within Interest expense from financial instruments measured at amortized cost and Lease liabilities are included within Other financial liabilities measured at amortized cost. Refer to Notes 3 and 19a, respectively. Also refer to Note 1 for more information about the nature of UBS’s leasing activities. 2 In 2020, right-of-use assets included the Additions from sale-and-leaseback transactions, from which UBS recognized net gains of USD 140 million, included within Other income. Refer to Note 5. 3 Includes write-offs of fully depreciated assets. 4 The total net reclassification amount for the respective periods represents reclassifications to Properties and other non-current assets held for sale. 5 Impairment charges recorded in 2020 generally relate to assets that are no longer used for which the recoverable amount based on a value in use approach was determined to be zero. Includes the impairment of internally generated software resulting from a decision in the fourth quarter of 2020 to not proceed with an internal business transfer from UBS Switzerland AG to UBS AG. 6 Consists of USD 855 million related to internally generated software, USD 92 million related to Owned properties and USD 89 million related to Leasehold improvements.
UBS AG
Property Equipment And Software [Line Items]
Disclosure of property, equipment and software [text block]	Note 12 Property, equipment and software At historical cost less accumulated depreciation USD million Owned properties Leased properties 1 Leasehold improve- ments IT hardware and communication equipment Internally generated software Purchased software Other machines and equipment Projects in progress 2020 2019 Historical cost Balance at the beginning of the year 6,988 3,630 2,917 963 5,817 302 768 943 22,329 21,365 Additions 25 401 2 36 90 156 24 18 1,239 1,989 1,740 Disposals / write-offs 3 (315) (8) (169) (155) (133) (46) (41) 0 (867) (554) Reclassifications 4 (469) 0 208 8 937 1 30 (1,305) (590) (391) Foreign currency translation 633 68 84 26 46 6 31 30 924 169 Balance at the end of the year 6,863 4,091 3,077 931 6,824 287 806 907 23,785 22,329 Accumulated depreciation Balance at the beginning of the year 4,074 481 1,729 710 2,735 233 541 0 10,503 9,623 Depreciation 152 512 226 92 703 30 64 0 1,779 1,542 Impairment 5 0 4 1 0 67 0 0 0 72 34 Disposals / write-offs 3 (199) (3) (164) (155) (126) (46) (41) 0 (735) (533) Reclassifications 4 (332) 0 6 0 0 0 0 0 (328) (248) Foreign currency translation 372 26 69 21 20 6 22 0 535 86 Balance at the end of the year 4,067 1,019 1,868 668 3,398 222 585 0 11,827 10,503 Net book value Net book value at the beginning of the year 2,914 3,149 1,188 254 3,082 69 227 943 11,826 11,742 Net book value at the end of the year 2,796 3,072 1,209 264 3,425 65 220 907 6 11,958 11,826 1 Represents right-of-use assets recognized by UBS AG as lessee. Includes immaterial leased IT equipment. The total cash outflow for leases during 2020 was USD 652 million (2019: USD 614 million). Interest expense on lease liabilities is included within Interest expense from financial instruments measured at amortized cost and Lease liabilities are included within Other financial liabilities measured at amortized cost. Refer to Notes 3 and 19a, respectively. Also refer to Note 1 for more information about the nature of UBS AG’s leasing activities. 2 In 2020, right-of-use assets included the Additions from sale-and-leaseback transactions, from which UBS AG recognized net gains of USD 140 million, included within Other income. Refer to Note 5. 3 Includes write-offs of fully depreciated assets. 4 The total net reclassification amount for the respective periods represents reclassifications to Properties and other non-current assets held for sale. 5 Impairment charges recorded in 2020 generally relate to assets that are no longer used for which the recoverable amount based on a value in use approach was determined to be zero. Includes the impairment of internally generated software resulting from a decision in the fourth quarter of 2020 to not proceed with an internal business transfer from UBS Switzerland AG to UBS AG. 6 Consists of USD 762 million related to internally generated software, USD 81 million related to Leasehold improvements and USD 63 million related to Owned properties.

Goodwill and intangible assets

Goodwill and intangible assets	12 Months Ended
Goodwill and intangible assets	Dec. 31, 2020
Disclosure Goodwill And Intangible Assets [Line Items]
Disclosure Of Intangible Assets And Goodwill Explanatory	Note 13 Goodwill and intangible assets Introduction UBS performs an impairment test on its goodwill assets on an annual basis or when indicators of impairment exist. UBS considers Asset Management and the Investment Bank, as they are reported in Note 2a, as separate cash-generating units (CGUs) , as that is the level at which the performance of investments (and the related goodwill) is reviewed and assessed by management. Given that a significant amount of goodwill in Global Wealth Management relates to the PaineWebber acquisition in 2000, which mainly affec ted the Americas portion of the business, this goodwill remains separately monitored by the Americas , despite the formation of Global Wealth Management in 2018. Accordingly, goodwill for Global Wealth Management is separately considered for impairment at t he level of two CGUs: Americas; and Switzerland and International (consisting of EMEA, Asia Pacific and Global). The impairment test is performed for each CGU to which goodwill is allocated by comparing the recoverable amount, based on its value in use, wi th the carrying amount of the respective CGU . An impairment charge is recognized if the carrying amount exceeds the recoverable amount. As of 31 December 20 20 , total goodwill recognized on the balance sheet was USD 6.2 billion, of which USD 3.7 billion was carried by the Global Wealth Management Americas CGU , USD 1.2 billion was carried by the Global Wealth Management Switzerland and International CGU , and USD 1.2 billion was carried by Asset Management. The Investment Bank CGU had no goodwill. Based on the impairment testing methodology described below, UBS concluded that the goodwill balances as of 31 December 20 20 allocated to these CGUs are not impaired. Methodology for goodwill impairment testing The recoverable amounts are determined using a discounted cash flow model, which has been adapted to use inputs that consider features of the banking business and its regulatory environment. The recoverable amoun t of a CGU is the sum of the discounted earnings attributable to shareholders from the first three forecast years and the terminal value, adjusted for the effect of the capital assumed to be needed over the next three years and to support growth beyond th at period. The terminal value, which covers all periods beyond the third year, is calculated on the basis of the forecast of third-year profit, the discount rate and the long-term growth rate, as well as the implied perpetual capital growth. The carrying a mount for each CGU is determined by reference to the Group’s equity attribution framework. Within th at framework, which is described in the “Capital, liquidity and funding, and balance sheet” section of this report, UBS attributes equity to the businesses on the basis of their risk-weighted assets and leverage ratio denominator ( both metrics include resource allocations from Group Functions to the business divisions ) , their goodwill and their intangible assets, as well as attributed equity related to certai n CET1 deduction items. The framework is primarily used for the purpose of measuring the performance of the businesses and includes certain management assumptions. Attributed equity equals the capital that a CGU requires to conduct its business and is curr ently considered a reasonable approximation of the carrying amount of the CGU s. The attributed equity methodology is aligned with the business planning process, the inputs from which are used in calculating the recoverable amounts of the respective CGU . › Re fer to the “ Capital, liquidity and funding, and balance sheet ” section of this report for more information about the equity attribution framework Assumptions Valuation parameters used within the Group’s impairment test model are linked to external market i nformation, where applicable. The model used to determine the recoverable amount is most sensitive to changes in the forecast earnings available to shareholders in years one to three, to changes in the discount rates and to changes in the long-term growth rate. The applied long-term growth rate is based on long-term economic growth rates for different regions worldwide. Earnings available to shareholders are estimated on the basis of forecast results, which are part of the business plan approved by the Boar d of Directors. The discount rates are determined by applying a capital asset pricing model-based approach, as well as considering quantitative and qualitative inputs from both internal and external analysts and the view of management. In addition, they take into account regional differences in risk-free rates at the level of individual CGU s. Consistently, long-term growth rates are determined based on nominal or real GDP growth rate forecasts, depending on the region. Key assumptions used to determine the recoverable amounts of each CGU are tested for sensitivity by applying a rea sonably possible change to those assumptions. Forecast earnings available to shareholders were changed by 20%, the discount rates were changed by 1.5 percentage points and the long-term growth rates were changed by 0.75 percentage points. Under all scenari os, reasonably possible changes in key assumptions did not result in an impairment of goodwill or intangible assets reported by Global Wealth Management Americas, Global Wealth Management Switzerland and International , and Asset Management. If the estima ted earnings and other assumptions in future periods deviate from the current outlook, the value of goodwill attributable to Global Wealth Management Americas, Global Wealth Management Switzerland and International , and Asset Management may become impaired in the future, giving rise to losses in the income statement. Recognition of any impairment of goodwill would reduce IFRS equity and net profit. It would not affect cash flows and, as goodwill is required to be deducted from capital under the Basel III ca pital framework, no effect would be expected on the Group’s capital ratios. Discount and growth rates Discount rates Growth rates In % 31.12.20 31.12.19 31.12.20 31.12.19 Global Wealth Management Americas 9.5 9.5 5.1 4.2 Global Wealth Management Switzerland and International 8.5 8.5 3.7 3.4 Asset Management 8.5 9.0 3.5 3.0 Investment Bank 11.0 11.0 4.8 4.0 Goodwill Intangible assets USD million Total Infrastructure 1 Customer relationships, contractual rights and other Total 2020 2019 Historical cost Balance at the beginning of the year 6,272 760 788 1,548 7,820 8,018 Additions 147 2 147 147 11 Disposals (158) 3 (158) (11) Write-offs (35) (35) (35) (185) Foreign currency translation 69 22 22 91 (12) Balance at the end of the year 6,182 760 922 1,683 7,865 7,820 Accumulated amortization and impairment Balance at the beginning of the year 730 621 1,351 1,351 1,371 Amortization 30 25 55 55 65 Impairment 4 2 2 2 0 Disposals 0 (8) Write-offs (35) (35) (35) (75) Foreign currency translation 11 11 11 (2) Balance at the end of the year 760 624 1,385 1,385 1,351 Net book value at the end of the year 6,182 0 298 298 6,480 6,469 1 Consists of the branch network intangible asset recognized in connection with the acquisition of PaineWebber Group, Inc. 2 Relates to the establishment of a banking partnership with Banco do Brasil. Refer to Note 29 for more information. 3 Relates to the sale of a majority stake in Fondcenter AG. Refer to Note 29 for more information. 4 Impairment charges recorded in 2020 relate to assets for which the recoverable amount was determined considering their value in use (recoverable amount of the impaired intangible assets in 2020 was USD 5 million). The table below presents goodwill and intangible assets by CGU for the year ended 31 December 2020 . USD million Global Wealth Management Americas Global Wealth Management Switzerland and International Asset Management Investment Bank Group Functions Total Goodwill Balance at the beginning of the year 3,719 1,198 1,354 0 0 6,272 Additions 0 Disposals (158) (158) Foreign currency translation 5 34 30 69 Balance at the end of the year 3,724 1,233 1,226 0 0 6,182 Intangible assets Balance at the beginning of the year 92 92 0 5 7 197 Additions 147 147 Disposals 0 Amortization (36) (12) (4) (4) (55) Impairment (2) (2) Foreign currency translation (9) 7 12 11 Balance at the end of the year 46 88 0 161 4 298 T he table below presents estimated aggregated amortization expenses for intangible assets. USD million Intangible assets Estimated, aggregated amortization expenses for: 2021 33 2022 28 2023 27 2024 24 2025 23 Thereafter 160 Not amortized due to indefinite useful life 2 Total 298
UBS AG
Disclosure Goodwill And Intangible Assets [Line Items]
Disclosure Of Intangible Assets And Goodwill Explanatory	Note 13 Goodwill and intangible assets Introduction UBS AG performs an impairment test on its goodwill assets on an annual basis or when indicators of impairment exist. UBS AG considers Asset Management and the Investment Bank, as they are reported in Note 2a, as separate cash-generating units (CGUs) , as that is the level at which the performance of investments (and the related goodwill) is reviewed and assessed by management. Given that a significant amount of goodwill in Global Wealth Management relates to the PaineWebber acquisition in 2000, which mainly affect ed the Americas portion of the business, this goodwill remains separately monitored by the Americas , despite the formation of Global Wealth Management in 2018. Accordingly, goodwill for Global Wealth Management is separately considered for impairment at th e level of two CGUs: Americas; and Switzerland and International (consisting of EMEA, Asia Pacific and Global). The impairment test is performed for each CGU to which goodwill is allocated by comparing the recoverable amount, based on its value in use, with the carrying amount of the respective CGU . An impairment charge is recognized if the carrying amount exceeds the recoverable amount. As of 31 December 20 20 , total goodwill recognized on the balance sheet was USD 6.2 billion, of which USD 3.7 bill ion was carried by the Global Wealth Management Americas CGU , USD 1.2 billion was carried by the Global Wealth Management Switzerland and International CGU , and USD 1.2 billion was carried by Asset Management. The Investment Bank CGU had no goodwill. Based on the impairment testing methodology described below, UBS AG concluded that the goodwill balances as of 31 December 20 20 allocated to these CGUs are not impaired. Methodology for goodwill impairment testing The recoverable amounts are determined using a discounted cash flow model, which has been adapted to use inputs that consider features of the banking business and its regulatory environment. The recoverable amount of a CGU is the sum of the discounted earnings attributable to shareholders from the firs t three forecast years and the terminal value, adjusted for the effect of the capital assumed to be needed over the next three years and to support growth beyond th at period. The terminal value, which covers all periods beyond the third year, is calculated on the basis of the forecast of third-year profit, the discount rate and the long-term growth rate, as well as the implied perpetual capital growth. The carrying amount for each CGU is determined by reference to the Group’s equity attribution framework. Within th at framework, which is described in the “ Capital, liquidity and funding, and balance sheet ” section of this report, UBS attributes equity to the businesses on the basis of their risk-weighted assets and leverage ratio denominator (both metrics inc lude resource allocations from Group Functions to the business divisions), their goodwill and their intangible assets, as well as attributed equity related to certain CET1 deduction items. The framework is primarily used for the purpose of measuring the performance of the businesses and includes certain management assumptions. Attributed equity equals the capital that a CGU requires to conduct its business and is currently considered a reasonable approximation of the carrying amou nt of the CGU s. The attributed equity methodology is aligned with the business planning process, the inputs from which are used in calculating the recoverable amounts of the respective CGU . › Refer to the “ Capital, liquidity and funding, and balance sheet ” s ection of this report for more information about the equity attribution framework Assumptions Valuation parameters used within UBS AG ’s impairment test model are linked to external market information, where applicable. The model used to determine the recov erable amount is most sensitive to changes in the forecast earnings available to shareholders in years one to three, to changes in the discount rates and to changes in the long-term growth rate. The applied long-term growth rate is based on long-term econo mic growth rates for different regions worldwide. Earnings available to shareholders are estimated on the basis of forecast results, which are part of the business plan approved by the Board of Directors. The discount rates are determined by applying a cap ital asset pricing model-based approach, as well as considering quantitative and qualitative inputs from both internal and external analysts and the view of management. In addition, they take into account regional differences in risk-free rates at the level of individual CGU s. Consistently, long-term growth rates are determined based on nominal or real GDP growth rate forecasts, depending on the region. Key assumptions used to determine the recoverable amounts of each CGU are tested for sensitivity by applying a reasonably possible change to those assumptions. Forecast earnings available to shareholders were changed by 20%, the discount rates were changed by 1.5 percentage points and the long-term growth rates were changed by 0.75 percentage points. Under all scenarios, reasonably possible changes in key assumptions did not result in an impairment of goodwill or intangible assets reported by Global Wealth Management Americas, Global Wealth Management Switzerland and International , and Asset Management. If the estimated earnings and other assumptions in future periods deviate from the current outlook, the value of goodwill attributable to Global Wealth Management Americas, Global Wealth Management Switzerland and International , and Asset Management may be come impaired in the future, giving rise to losses in the income statement. Recognition of any impairment of goodwill would reduce IFRS equity and net profit. It would not affect cash flows and, as goodwill is required to be deducted from capital under the Basel III capital framework, no effect would be expected on UBS AG ’s capital ratios. Discount and growth rates Discount rates Growth rates In % 31.12.20 31.12.19 31.12.20 31.12.19 Global Wealth Management Americas 9.5 9.5 5.1 4.2 Global Wealth Management Switzerland and International 8.5 8.5 3.7 3.4 Asset Management 8.5 9.0 3.5 3.0 Investment Bank 11.0 11.0 4.8 4.0 Goodwill Intangible assets USD million Total Infrastructure 1 Customer relationships, contractual rights and other Total 2020 2019 Historical cost Balance at the beginning of the year 6,272 760 788 1,548 7,820 8,018 Additions 147 2 147 147 11 Disposals (158) 3 (158) (11) Write-offs (35) (35) (35) (185) Foreign currency translation 69 22 22 91 (12) Balance at the end of the year 6,182 760 922 1,683 7,865 7,820 Accumulated amortization and impairment Balance at the beginning of the year 730 621 1,351 1,351 1,371 Amortization 30 25 55 55 65 Impairment 4 2 2 2 0 Disposals 0 (8) Write-offs (35) (35) (35) (75) Foreign currency translation 11 11 11 (2) Balance at the end of the year 760 624 1,385 1,385 1,351 Net book value at the end of the year 6,182 0 298 298 6,480 6,469 1 Consists of the branch network intangible asset recognized in connection with the acquisition of PaineWebber Group, Inc. 2 Relates to the establishment of a banking partnership with Banco do Brasil. Refer to Note 29 for more information. 3 Relates to the sale of a majority stake in Fondcenter AG. Refer to Note 29 for more information. 4 Impairment charges recorded in 2020 relate to assets for which the recoverable amount was determined considering their value in use (recoverable amount of the impaired intangible assets in 2020 was USD 5 million). The table below presents goodwill and intangible assets by CGU for the year ended 31 December 2020 . USD million Global Wealth Management Americas Global Wealth Management Switzerland and International Asset Management Investment Bank Group Functions Total Goodwill Balance at the beginning of the year 3,719 1,198 1,354 0 0 6,272 Additions 0 Disposals (158) (158) Foreign currency translation 5 34 30 69 Balance at the end of the year 3,724 1,233 1,226 0 0 6,182 Intangible assets Balance at the beginning of the year 92 92 0 5 7 197 Additions 147 147 Disposals 0 Amortization (36) (12) (4) (4) (55) Impairment (2) (2) Foreign currency translation (9) 7 12 11 Balance at the end of the year 46 88 0 161 4 298 The table below presents estimated aggregated amortization expenses for intangible assets. USD million Intangible assets Estimated, aggregated amortization expenses for: 2021 33 2022 28 2023 27 2024 24 2025 23 Thereafter 160 Not amortized due to indefinite useful life 2 Total 298

Other financial and non-financi

Other financial and non-financial assets	12 Months Ended
Other financial and non-financial assets	Dec. 31, 2020
Other Financial And Non Financial Assets [Line Items]
Other Financial And Non Financial Assets Explanatory [textblock]	Note 14 Other assets a) Other financial assets measured at amortized cost USD million 31.12.20 31.12.19 Debt securities 18,801 14,141 of which: government bills / bonds 9,789 8,492 Loans to financial advisors 2,569 2,877 Fee- and commission-related receivables 2,014 1,521 Finance lease receivables 1,447 1,444 Settlement and clearing accounts 614 587 Accrued interest income 591 742 Other 1,158 1,669 Total other financial assets measured at amortized cost 27,194 22,980 b) Other non-financial assets USD million 31.12.20 31.12.19 Precious metals and other physical commodities 6,264 4,597 Bail deposit 1 1,418 1,293 Prepaid expenses 1,081 927 VAT and other tax receivables 433 493 Properties and other non-current assets held for sale 246 199 Other 326 346 Total other non-financial assets 9,768 7,856 1 Refer to item 1 in Note 18b for more information.
UBS AG [Member]
Other Financial And Non Financial Assets [Line Items]
Other Financial And Non Financial Assets Explanatory [textblock]	Note 14 Other assets a) Other financial assets measured at amortized cost USD million 31.12.20 31.12.19 Debt securities 18,801 14,141 of which: government bills / bonds 9,789 8,492 Loans to financial advisors 2,569 2,877 Fee- and commission-related receivables 2,014 1,520 Finance lease receivables 1,447 1,444 Settlement and clearing accounts 614 587 Accrued interest income 592 742 Other 1,182 1,701 Total other financial assets measured at amortized cost 27,219 23,012 b) Other non-financial assets USD million 31.12.20 31.12.19 Precious metals and other physical commodities 6,264 4,597 Bail deposit 1 1,418 1,293 Prepaid expenses 731 687 VAT and other tax receivables 392 436 Properties and other non-current assets held for sale 246 199 Other 323 335 Total other non-financial assets 9,374 7,547 1 Refer to item 1 in Note 18b for more information.

Amounts due to banks and custom

Amounts due to banks and customer deposits	12 Months Ended
Amounts due to banks and customer deposits	Dec. 31, 2020
Disclosure Due To Banks And Customers [Line Items]
Disclosure of due to banks and customers [text block]	N ote 15 Amounts due to banks and customer deposits USD million 31.12.20 31.12.19 Amounts due to banks 11,050 6,570 Customer deposits 524,605 448,284 of which: demand deposits 236,447 176,010 of which: retail savings / deposits 220,898 168,581 of which: time deposits 40,290 62,315 of which: fiduciary deposits 26,970 41,378 Total amounts due to banks and customer deposits 535,655 454,854 Customer deposits increased by USD 76 billion, mainly in Switzerland and the Americas, of which USD 50 billion was in Global Wealth Management and USD 26 billion in Personal & Corporate Banking, as a result of clients holding higher levels of cash, as well as currency effects. Demand deposits and retail savings / deposits together increased by USD 113 billion, partly offs et by de creases of USD 36 billion in time deposits and fiduciary deposits.
UBS AG
Disclosure Due To Banks And Customers [Line Items]
Disclosure of due to banks and customers [text block]	Note 15 Amounts due to banks, customer deposits, and funding from UBS Group AG and its subsidiaries a) Amounts due to banks and customer deposits USD million 31.12.20 31.12.19 Amounts due to banks 11,050 6,570 Customer deposits 527,929 450,591 of which: demand deposits 237,604 176,972 of which: retail savings / deposits 220,898 168,581 of which: time deposits 42,457 63,659 of which: fiduciary deposits 26,970 41,378 Total amounts due to banks and customer deposits 538,979 457,161 Customer deposits increased by USD 77 billion, mainly in Switzerland and the Americas, of which USD 50 billion was in Global Wealth Management and USD 27 billion in Personal & Corporate Banking, as a result of clients holding higher levels of cash, as well as currency effects. Demand deposits and retail savings / deposits together increased by USD 113 billion, partly offs et by decreases of USD 36 billion in time deposits and fiduciary deposits. b) Funding from UBS Group AG and its subsidiaries USD million 31.12.20 31.12.19 Senior unsecured debt that contributes to total loss-absorbing capacity (TLAC) 36,611 30,105 Senior unsecured debt other than TLAC 2,939 3,389 High-trigger loss-absorbing additional tier 1 capital instruments 11,854 11,958 Low-trigger loss-absorbing additional tier 1 capital instruments 2,575 2,415 Total 1 53,979 47,866 1 UBS AG has also recognized funding from UBS Group AG and its subsidiaries that is designated at fair value. Refer to Note 19b for more information.

Debt issued designated at fair

Debt issued designated at fair value	12 Months Ended
Debt issued designated at fair value	Dec. 31, 2020
Disclosure Of Financial Liabilities [Line Items]
Disclosure Of Financial Instruments Designated At Fair Value Through Profit Or Loss Explanatory	Note 16 Debt issued designated at fair value USD million 31.12.20 31.12.19 Issued debt instruments Equity-linked 1 41,069 41,722 Rates-linked 11,038 16,318 Credit-linked 1,933 1,916 Fixed-rate 3,604 4,636 Commodity-linked 1,497 1,567 Other 2,101 649 of which: debt that contributes to total loss-absorbing capacity 1,190 217 Total debt issued designated at fair value 61,243 66,809 of which: issued by UBS AG with original maturity greater than one year 2 46,427 51,031 of which: life-to-date own credit (gain) / loss 418 92 1 Includes investment fund unit-linked instruments issued. 2 Issued by the legal entity UBS AG. Based on original contractual maturity without considering any early redemption features. 100% of the balance as of 31 December 2020 was unsecured (31 December 2019: more than 99% of the balance was unsecured). As of 31 December 2020 and 31 December 2019 , the contractual redemption amount at maturity of debt issued designated at fair value through profit or loss was not materially different from the carrying amount. The table below shows the residual contractual maturity of the carrying amount of debt issued de signated at fair value, split between fixed-rate and floating-rate instruments based on the contractual terms, and does not consider any early redemption features. Interest rate ranges for future interest payments related to debt issued designated at fair value have not been included in the table below, as the majority of the debt instruments issued are structured products and therefore the future interest payments are highly dependent upon the embedded derivative and prevailing market conditions at the poi nt in time that each interest payment is made. › Refer to Note 24 for maturity information on an undiscounted cash flow basis Contractual maturity of carrying amount USD million 2021 2022 2023 2024 2025 2026–2030 Thereafter Total 31.12.20 Total 31.12.19 UBS Group AG 1 Non-subordinated debt Fixed-rate 0 0 0 0 0 0 1,375 1,375 217 UBS AG 2 Non-subordinated debt Fixed-rate 4,144 1,473 1,112 512 318 227 1,623 9,409 10,368 Floating-rate 18,145 8,758 5,915 1,727 6,454 6,058 2,471 49,528 55,299 Subtotal 22,289 10,231 7,027 2,239 6,772 6,286 4,094 58,937 65,668 Other subsidiaries 3 Non-subordinated debt Fixed-rate 88 7 0 0 0 422 22 539 520 Floating-rate 41 185 126 0 0 0 39 392 404 Subtotal 129 192 126 0 0 422 61 931 924 Total 22,418 10,423 7,153 2,239 6,772 6,708 5,530 61,243 66,809 1 Comprises instruments issued by the legal entity UBS Group AG. 2 Comprises instruments issued by the legal entity UBS AG. 3 Comprises instruments issued by subsidiaries of UBS AG.
UBS AG
Disclosure Of Financial Liabilities [Line Items]
Disclosure Of Financial Instruments Designated At Fair Value Through Profit Or Loss Explanatory	Note 16 Debt issued designated at fair value USD million 31.12.20 31.12.19 Issued debt instruments Equity-linked 1 41,069 41,722 Rates-linked 11,038 16,318 Credit-linked 1,933 1,916 Fixed-rate 3,604 4,636 Commodity-linked 1,497 1,567 Other 726 432 Total debt issued designated at fair value 59,868 66,592 of which: issued by UBS AG with original maturity greater than one year 2 46,427 51,031 of which: life-to-date own credit (gain) / loss 233 82 1 Includes investment fund unit-linked instruments issued. 2 Issued by the legal entity UBS AG. Based on original contractual maturity without considering any early redemption features. 100% of the balance as of 31 December 2020 was unsecured (31 December 2019: more than 99% of the balance was unsecured). As of 31 December 2020 and 31 December 2019 , the contractual redemption amount at maturity of debt issued designated at fair value through profit or loss was not materially different from the carrying amount. The table below shows the residual contractual maturity of the carrying amount of debt issued designated at fair value, split between fixed-rate and floating-rate instruments based on the contractual terms, and does not consider any early redemption features. Interest rate ranges for future interest payments related to debt issued designated at fair value have not been included in the table below, as the majority of the debt instruments issued are structured products and therefore the future interest payments are highly dependent upon the em bedded derivative and prevailing market conditions at the point in time that each interest payment is made. › Refer to Note 24 for maturity information on an undiscounted cash flow basis Contractual maturity of carrying amount USD million 2021 2022 2023 2024 2025 2026–2030 Thereafter Total 31.12.20 Total 31.12.19 UBS AG 1 Non-subordinated debt Fixed-rate 4,144 1,473 1,112 512 318 227 1,623 9,409 10,368 Floating-rate 18,145 8,758 5,915 1,727 6,454 6,058 2,471 49,528 55,299 Subtotal 22,289 10,231 7,027 2,239 6,772 6,286 4,094 58,937 65,668 Other subsidiaries 2 Non-subordinated debt Fixed-rate 88 7 0 0 0 422 22 539 520 Floating-rate 41 185 126 0 0 0 39 392 404 Subtotal 129 192 126 0 0 422 61 931 924 Total 22,418 10,423 7,153 2,239 6,772 6,708 4,155 59,868 66,592 1 Comprises instruments issued by the legal entity UBS AG. 2 Comprises instruments issued by subsidiaries of UBS AG.

Debt issued measured at amortiz

Debt issued measured at amortized cost	12 Months Ended
Debt issued measured at amortized cost	Dec. 31, 2020
Disclosure Of Financial Liabilities [Line Items]
Disclosure Of Debt Securities Explanatory	Note 17 Debt issued measured at amortized cost USD million 31.12.20 31.12.19 Certificates of deposit 15,680 5,190 Commercial paper 25,472 14,413 Other short-term debt 5,515 2,235 Short-term debt 1 46,666 21,837 Senior unsecured debt that contributes to total loss-absorbing capacity (TLAC) 36,611 30,105 Senior unsecured debt other than TLAC 21,340 25,569 of which: issued by UBS AG with original maturity greater than one year 2 18,464 22,349 Covered bonds 2,796 2,633 Subordinated debt 22,157 21,775 of which: high-trigger loss-absorbing additional tier 1 capital instruments 11,837 11,931 of which: low-trigger loss-absorbing additional tier 1 capital instruments 2,577 2,414 of which: low-trigger loss-absorbing tier 2 capital instruments 7,201 6,892 of which: non-Basel III-compliant tier 2 capital instruments 543 540 Debt issued through the Swiss central mortgage institutions 9,660 8,574 Other long-term debt 3 4 Long-term debt 3 92,566 88,660 Total debt issued measured at amortized cost 4 139,232 110,497 1 Debt with an original contractual maturity of less than one year. 2 Issued by the legal entity UBS AG. Based on original contractual maturity without considering any early redemption features. As of 31 December 2020, 100% of the balance was unsecured (31 December 2019: 100% of the balance was unsecured). 3 Debt with an original maturity greater than or equal to one year. The classification of debt issued into short-term and long-term does not consider any early redemption features. 4 Net of bifurcated embedded derivatives, the fair value of which was not material for the periods presented. The Group uses interest rate and foreign exchange derivatives to manage the risks inherent in certain debt instruments held at amortized cost . In some cases, the Group applies hedge accounting for interest rate risk as discussed in item 2 j in Note 1 a and Note 25 . As a result of applying hedge accounting, the life-to-date adjustment to the carrying amount of debt issued was an increase of USD 2 , 401 million as of 31 December 2020 and an increase of USD 1,099 million as of 31 December 2019 , reflecting changes in fair value due to interest rate movements. Subordinated debt consists of unsecured debt obligations that are contractually subordinated in right of payment to all other present and future non-subordinated obligations of the respective issuing entity. All of the subordinat ed debt instruments outstanding as of 31 December 2020 pay a fixed rate of interest. The table below shows the residual contractual maturity of the carrying amount of debt issued, split between fixed-rate and floating-rate based on the contractual terms, and does not consider any early redemption features. The effects from interest rate swaps, which are used to hedge various fixed-rate debt issuances by changing the repricing characteristics into those similar to floating-rate debt, are also not considered in the table below. › R efer to Note 24 for maturity information on an undiscounted cash flow basis Contractual maturity of carrying amount USD million 2021 2022 2023 2024 2025 2026–2030 Thereafter Total 31.12.20 Total 31.12.19 UBS Group AG 1 Non-subordinated debt Fixed-rate 1,856 3,894 4,086 5,522 5,355 12,864 0 33,578 27,306 Floating-rate 1,001 2,638 2,251 0 0 0 0 5,890 6,012 Subordinated debt Fixed-rate 0 0 0 0 0 0 14,413 14,413 14,344 Subtotal 2,857 6,532 6,337 5,522 5,355 12,864 14,413 53,881 47,662 UBS AG 2 Non-subordinated debt Fixed-rate 40,886 5,813 4,224 0 386 0 1,309 52,618 33,696 Floating-rate 12,007 1,155 1,175 0 962 0 0 15,299 13,119 Subordinated debt Fixed-rate 0 2,053 0 2,693 335 2,663 0 7,744 7,431 Subtotal 52,893 9,022 5,398 2,693 1,684 2,663 1,309 75,661 54,247 Other subsidiaries 3 Non-subordinated debt Fixed-rate 1,152 928 1,038 1,106 1,211 3,580 674 9,690 8,588 Subtotal 1,152 928 1,038 1,106 1,211 3,580 674 9,690 8,588 Total 56,902 16,482 12,774 9,321 8,250 19,106 16,397 139,232 110,497 1 Comprises debt issued by the legal entity UBS Group AG. 2 Comprises debt issued by the legal entity UBS AG. 3 Comprises debt issued by subsidiaries of UBS AG.
UBS AG
Disclosure Of Financial Liabilities [Line Items]
Disclosure Of Debt Securities Explanatory	Note 17 Debt issued measured at amortized cost USD million 31.12.20 31.12.19 Certificates of deposit 15,680 5,190 Commercial paper 25,472 14,413 Other short-term debt 5,515 2,235 Short-term debt 1 46,666 21,837 Senior unsecured debt 18,483 22,356 of which: issued by UBS AG with original maturity greater than one year 2 18,464 22,349 Covered bonds 2,796 2,633 Subordinated debt 7,744 7,431 of which: low-trigger loss-absorbing tier 2 capital instruments 7,201 6,892 of which: non-Basel III-compliant tier 2 capital instruments 543 540 Debt issued through the Swiss central mortgage institutions 9,660 8,574 Other long-term debt 3 4 Long-term debt 3 38,685 40,998 Total debt issued measured at amortized cost 4 85,351 62,835 1 Debt with an original contractual maturity of less than one year. 2 Issued by the legal entity UBS AG. Based on original contractual maturity without considering any early redemption features. As of 31 December 2020, 100% of the balance was unsecured (31 December 2019: 100% of the balance was unsecured). 3 Debt with an original maturity greater than or equal to one year. The classification of debt issued into short-term and long-term does not consider any early redemption features. 4 Net of bifurcated embedded derivatives, the fair value of which was not material for the periods presented. UBS AG uses interest rate and foreign exchange derivatives to manage the risks inherent in certain debt instruments held at amortized cost. In some cases, UBS AG applies hedge accounting for interest rate risk as discussed in item 2 j in Note 1 a and Note 25 . As a result of applying hedge accounting, the life-to-date adjustment to the carrying amount of debt issued was an increase of USD 761 million as of 31 December 2020 and an increase of USD 574 million as of 31 December 2019 , reflecting changes in fair value due to interest rate movements. Subordinated debt consists of unsecured debt obligations that are contractually subordinated in right of payment to all other present and future non-subordinated obligations of the respective issuing entity. All of the subordinated debt instruments outstanding as of 31 December 2020 pay a fixed rate of interest. The table below shows the residual contractu al maturity of the carrying amount of debt issued, split between fixed-rate and floating-rate based on the contractual terms, and does not consider any early redemption features. The effects from interest rate swaps, which are used to hedge various fixed-r ate debt issuances by changing the repricing characteristics into those similar to floating-rate debt, are also not considered in the table below. › Refer to Note 24 for maturity information on an undisco unted cash flow basis Contractual maturity of carrying amount USD million 2021 2022 2023 2024 2025 2026–2030 Thereafter Total 31.12.20 Total 31.12.19 UBS AG 1 Non-subordinated debt Fixed-rate 40,886 5,813 4,224 0 386 0 1,309 52,618 33,696 Floating-rate 12,007 1,155 1,175 0 962 0 0 15,299 13,119 Subordinated debt Fixed-rate 0 2,053 0 2,693 335 2,663 0 7,744 7,431 Subtotal 52,893 9,022 5,398 2,693 1,684 2,663 1,309 75,661 54,247 Other subsidiaries 2 Non-subordinated debt Fixed-rate 1,152 928 1,038 1,106 1,211 3,580 674 9,690 8,588 Subtotal 1,152 928 1,038 1,106 1,211 3,580 674 9,690 8,588 Total 54,045 9,950 6,437 3,798 2,895 6,243 1,983 85,351 62,835 1 Comprises debt issued by the legal entity UBS AG. 2 Comprises debt issued by subsidiaries of UBS AG.

Provisions

Provisions	12 Months Ended
Provisions	Dec. 31, 2020
Disclosure Of Other Provisions [Line Items]
Disclosure Of Provisions Explanatory	Note 18 Provisions and contingent liabilities a) Provisions The table below presents an overview of total provisions. USD million 31.12.20 31.12.19 Provisions other than provisions for expected credit losses 2,571 2,861 Provisions for expected credit losses 257 114 Total provisions 2,828 2,974 The following table presents additional information for provisions other than provisions for expected credit losses. USD million Litigation, regulatory and similar matters 1 Restructuring Other 3 Total 2020 Total 2019 Balance at the beginning of the year 2,475 106 280 2,861 3,245 Increase in provisions recognized in the income statement 233 101 139 472 404 Release of provisions recognized in the income statement (33) (13) (47) (92) (123) Provisions used in conformity with designated purpose (603) (113) (54) (770) (659) Capitalized reinstatement costs 0 0 11 11 1 Reclassifications 0 (14) 14 0 0 Foreign currency translation / unwind of discount 64 4 20 88 (8) Balance at the end of the year 2,135 72 2 363 2,571 2,861 1 Comprises provisions for losses resulting from legal, liability and compliance risks. 2 Primarily consists of provisions for onerous contracts of USD 49 million as of 31 December 2020 (31 December 2019: USD 61 million) and personnel-related restructuring provisions of USD 18 million as of 31 December 2020 (31 December 2019: USD 40 million). 3 Mainly includes provisions related to real estate, employee benefits and operational risks. Restructuring provisions primarily relate to onerous contracts and severance payments. Onerous contracts for property are recognized when UBS is committed to pay for non-lease components, such as utilities, service charges, taxes and maintenance, when a property is vacated or not fully recovered from sub-tenants. Severance-related provisions are used within a short time period but potential changes in amount may be triggered when natural staff attrition reduces the number of people affected by a restructuring event and therefore the estimated costs. Information about provisions and contingent liabilities in respect of litigation, regulatory and similar matters, as a class, is included in Note 18 b. There are no material contin gent liabilities associated with the other classes of provisions.
UBS AG
Disclosure Of Other Provisions [Line Items]
Disclosure Of Provisions Explanatory	Note 18 Provisions and contingent liabilities a) Provisions The table below presents an overview of total provisions. USD million 31.12.20 31.12.19 Provisions other than provisions for expected credit losses 2,534 2,825 Provisions for expected credit losses 257 114 Total provisions 2,791 2,938 The following table presents additional information for provisions other than provisions for expected credit losses USD million Litigation, regulatory and similar matters 1 Restructuring Other 3 Total 2020 Total 2019 Balance at the beginning of the year 2,475 99 251 2,825 3,209 Increase in provisions recognized in the income statement 233 88 134 455 376 Release of provisions recognized in the income statement (33) (11) (44) (88) (119) Provisions used in conformity with designated purpose (603) (100) (51) (755) (632) Capitalized reinstatement costs 0 0 11 11 0 Reclassifications 0 (13) 13 0 (1) Foreign currency translation / unwind of discount 64 4 18 86 (8) Balance at the end of the year 2,135 67 2 332 2,534 2,825 1 Comprises provisions for losses resulting from legal, liability and compliance risks. 2 Primarily consists of provisions for onerous contracts of USD 49 million as of 31 December 2020 (31 December 2019: USD 61 million) and personnel-related restructuring provisions of USD 13 million as of 31 December 2020 (31 December 2019: USD 33 million). 3 Mainly includes provisions related to real estate, employee benefits and operational risks. Restructuring provisions primarily relate to onerous contracts and severance payments. Onerous contracts for property are recogni zed when UBS AG is committed to pay for non-lease components, such as utilities, service charges, taxes and maintenance, when a property is vacated or not fully recovered from sub-tenants. Severance-related provisions are used within a short time period bu t potential changes in amount may be triggered when natural staff attrition reduces the number of people affected by a restructuring event and therefore the estimated costs. Information about provisions and contingent liabilities in respect of litigation, regulatory and similar matters, as a class, is included in Note 18 b. There are no material contingent liabilities associated with the other classes of provisions.

Litigation, regulatory and simi

Litigation, regulatory and similar matters	12 Months Ended
Litigation, regulatory and similar matters	Dec. 31, 2020
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Disclosure Of Contingent Liabilities Explanatory	Note 18 Provisions and contingent liabilities b) Litigation, regulatory and similar matters The Group operates in a legal and regulatory environment that exposes it to significant litigation and similar risks arising from disputes and regulatory proceedings. As a result, UBS (which for purposes of this Note may refer to UBS Group AG and/or one or more of its subsidiaries, as applicable) is involved in various disputes and legal proc eedings, including litigation, arbitration, and regulatory and criminal investigations. Such matters are subject to many uncertainties, and the outcome and the timing of resolution are often difficult to predict, particularly in the earlier stages of a cas e. There are also situations where the Group may enter into a settlement agreement. This may occur in order to avoid the expense, management distraction or reputational implications of continuing to contest liability, even for those matters for which the G roup believes it should be exonerated. The uncertainties inherent in all such matters affect the amount and timing of any potential outflows for both matters with respect to which provisions have been established and other contingent liabilities. The Group makes provisions for such matters brought against it when, in the opinion of management after seeking legal advice, it is more likely than not that the Group has a present legal or constructive obligation as a result of past events, it is probable that an outflow of resources will be required, and the amount can be reliably estimated. Where these factors are otherwise satisfied, a provision may be established for claims that have not yet been asserted against the Group, but are nevertheless expected to be, based on the Group’s experience with similar asserted claims. If any of those conditions is not met, such matters result in contingent liabilities. If the amount of an obligation cannot be reliably estimated, a liability exists that is not recognized even if an outflow of resources is probable. Accordingly, no provision is established even if the potential outflow of resources with respect to such matters could be significant. Developments relating to a matter that occur after the relevant reporting period , but prior to the issuance of financial statements, which affect management’s assessment of the provision for such matter (because, for example, the developments provide evidence of conditions that existed at the end of the reporting period), are adjustin g events after the reporting period under IAS 10 and must be recognized in the financial statements for the reporting period. Specific litigation, regulatory and other matters are described below, including all such matters that management considers to be material and others that management believes to be of significance due to potential financial, reputational and other effects. The amount of damages claimed, the size of a transaction or other information is provided where available and appropriate in order to assist users in considering the magnitude of potential exposures. In the case of certain matters below, we state that we have established a provision, and for the other matters, we make no such statement. When we make this statement and we expect disclosure of the amount of a provision to prejudice seriously our position with other parties in the matter because it would reve al what UBS believes to be the probable and reliably estimable outflow, we do not disclose that amount. In some cases we are subject to confidentiality obligations that preclude such disclosure. With respect to the matters for which we do not state whether we have established a provision, either: (a) we have not established a provision, in which case the matter is treated as a contingent liability under the applicable accounting standard; or (b) we have established a provision but expect disclosure of that fact to prejudice seriously our position with other parties in the matter because it would reveal the fact that UBS believes an outflow of resources to be probable and reliably estimable. With respect to certain litigation, regulatory and similar matters f or which we have established provisions, we are able to estimate the expected timing of outflows. However, the aggregate amount of the expected outflows for those matters for which we are able to estimate expected timing is immaterial relative to our curre nt and expected levels of liquidity over the relevant time periods. The aggregate amount provisioned for litigation, regulatory and similar matters as a class is disclosed in the “Provisions” table in Note 18a above. It is not practicable to provide an agg regate estimate of liability for our litigation, regulatory and similar matters as a class of contingent liabilities. Doing so would require UBS to provide speculative legal assessments as to claims and proceedings that involve unique fact patterns or nove l legal theories, that have not yet been initiated or are at early stages of adjudication, or as to which alleged damages have not been quantified by the claimants. Although UBS therefore cannot provide a numerical estimate of the future losses that could arise from litigation, regulatory and similar matters, UBS believes that the aggregate amount of possible future losses from this class that are more than remote substantially exceeds the level of current provisions. Litigation, regulatory and similar mat ters may also result in non-monetary penalties and consequences. For example, the non-prosecution agreement UBS entered into with the US Department of Justice (DOJ), Criminal Division, Fraud Section in connection with submissions of benchmark interest rate s, including, among others, the British Bankers’ Association London Interbank Offered Rate (LIBOR), was terminated by the DOJ based on its determination that UBS had committed a US crime in relation to foreign exchange matters. As a consequence, UBS AG ple aded guilty to one count of wire fraud for conduct in the LIBOR matter, paid a fine and was subject to probation, which ended in January 2020. A guilty plea to, or conviction of, a crime could have material consequences for UBS. Resolution of regulatory p roceedings may require UBS to obtain waivers of regulatory disqualifications to maintain certain operations, may entitle regulatory authorities to limit, suspend or terminate licenses and regulatory authorizations, and may permit financial market utilities to limit, suspend or terminate UBS’s participation in such utilities. Failure to obtain such waivers, or any limitation, suspension or termination of licenses, authorizations or participations, could have material consequences for UBS. The risk of loss as sociated with litigation, regulatory and similar matters is a component of operational risk for purposes of determining capital requirements. Information concerning our capital requirements and the calculation of operational risk for this purpose is includ ed in the “Capital, liquidity and funding, and balance sheet” section of this report. Provisions for litigation, regulatory and similar matters by business division and in Group Functions 1 USD million Global Wealth Manage- ment Personal & Corporate Banking Asset Manage- ment Investment Bank Group Functions Total 2020 Total 2019 Balance at the beginning of the year 782 113 0 255 1,325 2,475 2,827 Increase in provisions recognized in the income statement 213 0 0 19 1 233 258 Release of provisions recognized in the income statement (24) (6) 0 (1) (2) (33) (81) Provisions used in conformity with designated purpose (154) (1) 0 (52) (395) (603) (518) Reclassifications 0 0 0 (3) 3 0 0 Foreign currency translation / unwind of discount 44 10 0 10 0 64 (12) Balance at the end of the year 861 115 0 227 932 2,135 2,475 1 Provisions, if any, for matters described in this disclosure are recorded in Global Wealth Management (item 3 and item 4) and Group Functions (item 2). Provisions, if any, for the matters described in items 1 and 6 of this disclosure are allocated between Global Wealth Management and Personal & Corporate Banking, and provisions, if any, for the matters described in this disclosure in item 5 are allocated between the Investment Bank and Group Functions. 1. Inquiries regarding cross-border wealth management businesses Tax and regulatory authorities in a number of countries have made inquiries, served requests for information or examined employees located in their respective jurisdictions relating to the cross-border wealth management services provided by UBS and other financial institutions. It is possibl e that the implementation of automatic tax information exchange and other measures relating to cross-border provision of financial services could give rise to further inquiries in the future. UBS has received disclosure orders from the Swiss Federal Tax Ad ministration (FTA) to transfer information based on requests for international administrative assistance in tax matters. The requests concern a number of UBS account numbers pertaining to current and former clients and are based on data from 2006 and 2008. UBS has taken steps to inform affected clients about the administrative assistance proceedings and their procedural rights, including the right to appeal. The requests are based on data received from the German authorities, who seized certain data related to UBS clients booked in Switzerland during their investigations and have apparently shared this data with other European countries. UBS expects additional countries to file similar requests. The Swiss Federal Administrative Court ruled in 2016 that, in t he administrative assistance proceedings related to a French bulk request, UBS has the right to appeal all final FTA client data disclosure orders. On 30 July 2018, the Swiss Federal Administrative Court granted UBS’s appeal by holding the French administr ative assistance request inadmissible. The FTA filed a final appeal with the Swiss Federal Supreme Court. On 26 July 2019, the Supreme Court reversed the decision of the Federal Administrative Court. In December 2019, the court released its written decisio n. The decision requires the FTA to obtain confirmation from the French authorities that transmitted data will be used only for the purposes stated in their request before transmitting any data. The stated purpose of the original request was to obtain info rmation relating to taxes owed by account holders. Accordingly, any information transferred to the French authorities must not be passed to criminal authorities or used in connection with the ongoing case against UBS discussed in this item. In February 202 0, the FTA ordered that UBS would not be granted party status in the French administrative assistance proceedings. UBS appealed this decision to the Federal Administrative Court. On 15 July, the Federal Administrative Court upheld the FTA’s decision, holdi ng that UBS will no longer have party status in these proceedings. The Swiss Federal Supreme Court has determined that it will not hear UBS’s appeal of this decision. Since 2013, UBS (France) S.A., UBS AG and certain former employees have been under investigation in France for alleged complicity in unlawful solicitation of clients on French territory, regarding the laundering of proceeds of tax fraud, and banking and financial solicitation by unauthorized persons. In connection with this investigation , the investigating judges ordered UBS AG to provide bail (“ caution ”) of EUR 1.1 billion and UBS (France) S.A. to post bail of EUR 40 million, which was reduced on appeal to EUR 10 million. A trial in the court of first instance took place from 8 October 2018 until 15 November 2018. On 20 February 2019, the court announced a verdict finding UBS AG guilty of unlawful solicitation of clients on French territory and aggravated laundering of the proceeds of tax fraud, and UBS (France) S.A. guilty of aiding and abetting unlawful solicitation and laundering the proceeds of tax fraud. The court imposed fines aggregating EUR 3.7 billion on UBS AG and UBS (France) S.A. and awarded EUR 800 million of civil damages to the French state. UBS has appealed the decision. U nder French law, the judgment is suspended while the appeal is pending. The trial originally scheduled for 2 June 2020 has been rescheduled to 8-24 March 2021. The Court of Appeal will retry the case de novo as to both the law and the facts, and the fines and penalties can be greater than or less than those imposed by the court of first instance. A subsequent appeal to the Cour de Cassation, France’s highest court, is possible with respect to questions of law. UBS believes that based on both the law and the facts the judgment of the court of first instance should be reversed. UBS believes it followed its obligations under Swiss and French law as well as the European Savings Tax Directive. Even assuming liability, which it contests, UBS believes the penalties and damage amounts awarded greatly exceed the amounts that could be supported by the law and the facts. In particular, UBS believes the court incorrectly based the penalty on the total regularized assets rather than on any unpaid taxes on those assets for which a fraud has been characterized and further incorrectly awarded damages based on costs that were not proven by the civil party. Notwithstanding that UBS believes it should be acquitted, our balance sheet at 31 December 2020 reflected provisions with respect to this matter in an amount of EUR 450 million (USD 549 million at 31 December 2020). The wide range of possible outcomes in this case contributes to a high degree of estimation uncertainty. The provision reflected on our balance sheet at 31 Decemb er 2020 reflects our best estimate of possible financial implications, although it is reasonably possible that actual penalties and civil damages could exceed the provision amount. In 2016, UBS was notified by the Belgian investigating judge that it is und er formal investigation (“ inculpé ”) regarding the laundering of proceeds of tax fraud, of banking and financial solicitation by unauthorized persons, and of serious tax fraud. Our balance sheet at 31 December 2020 reflected provisions with respect to matt ers described in this item 1 in an amount that UBS believes to be appropriate under the applicable accounting standard. As in the case of other matters for which we have established provisions, the future outflow of resources in respect of such matters can not be determined with certainty based on currently available information and accordingly may ultimately prove to be substantially greater (or may be less) than the provision that we have recognized. 2. Claims related to sales of residential mortgage-backed securities and mortgages From 2002 through 2007, prior to the crisis in the US residential loan market, UBS was a substantial issuer and underwriter of US residential mortgage-backed securities (RMBS) and was a purchaser and seller of US residential mortgages. In November 2018, the DOJ filed a civil complaint in the District Court for the Eastern District of New York. The compla int seeks unspecified civil monetary penalties under the Financial Institutions Reform, Recovery and Enforcement Act of 1989 related to UBS’s issuance, underwriting and sale of 40 RMBS transactions in 2006 and 2007. UBS moved to dismiss the civil complaint on 6 February 2019. On 10 December 2019, the district court denied UBS’s motion to dismiss. Our balance sheet at 31 December 2020 reflected a provision with respect to matters described in this item 2 in an amount that UBS believes to be appropriate unde r the applicable accounting standard. As in the case of other matters for which we have established provisions, the future outflow of resources in respect of this matter cannot be determined with certainty based on currently available information and accor dingly may ultimately prove to be substantially greater (or may be less) than the provision that we have recognized. 3. Madoff In relation to the Bernard L. Madoff Investment Securities LLC (BMIS) investment fraud, UBS AG, UBS (Luxembourg) S.A. (now UBS Eu rope SE, Luxembourg branch) and certain other UBS subsidiaries have been subject to inquiries by a number of regulators, including the Swiss Financial Market Supervisory Authority (FINMA) and the Luxembourg Commission de Surveillance du Secteur Financier. Those inquiries concerned two third-party funds established under Luxembourg law, substantially all assets of which were with BMIS, as well as certain funds established in offshore jurisdictions with either direct or indirect exposure to BMIS. These funds faced severe losses, and the Luxembourg funds are in liquidation. The documentation establishing both funds identifies UBS entities in various roles, including custodian, administrator, manager, distributor and promoter, and indicates that UBS employees se rve as board members. In 2009 and 2010, the liquidators of the two Luxembourg funds filed claims against UBS entities, non-UBS entities and certain individuals, including current and former UBS employees, seeking amounts totaling approximately EUR 2.1 bill ion, which includes amounts that the funds may be held liable to pay the trustee for the liquidation of BMIS (BMIS Trustee). A large number of alleged beneficiaries have filed claims against UBS entities (and non-UBS entities) for purported losses relating to the Madoff fraud. The majority of these cases have been filed in Luxembourg, where decisions that the claims in eight test cases were inadmissible have been affirmed by the Luxembourg Court of Appeal, and the Luxembourg Supreme Court has dismissed a fu rther appeal in one of the test cases. In the US, the BMIS Trustee filed claims against UBS entities, among others, in relation to the two Luxembourg funds and one of the offshore funds. The total amount claimed against all defendants in these actions was not less than USD 2 billion. In 2014, the US Supreme Court rejected the BMIS Trustee’s motion for leave to appeal decisions dismissing all claims except those for the recovery of approximately USD 125 million of payments alleged to be fraudulent conveyanc es and preference payments. In 2016, the bankruptcy court dismissed these claims against the UBS entities. In February 2019, the Court of Appeals reversed the dismissal of the BMIS Trustee’s remaining claims, and the US Supreme Court subsequently denied a petition seeking review of the Court of Appeals’ decision. The case has been remanded to the Bankruptcy Court for further proceedings. 4. Puerto Rico Declines since 2013 in the market prices of Puerto Rico municipal bonds and of closed-end funds (funds) that are sole-managed and co-managed by UBS Trust Company of Puerto Rico and distributed by UBS Financial Services Incorporated of Puerto Rico (UBS PR) led to multiple regulatory inquiries, which in 2014 and 2015, led to settlements with the Office of the Commissioner of Financial Institutions for the Commonwealth of Puerto Rico, the US Securities and Exchange Commission (SEC) and the Financial Industry Regulatory Authority in relation to their examinations of UBS’s operations. Since that time UBS has rece ived customer complaints and arbitrations with aggregate claimed damages of USD 3.4 billion, of which claims with aggregate claimed damages of USD 2.8 billion have been resolved through settlements, arbitration or withdrawal of the claim. The claims have b een filed by clients in Puerto Rico who own the funds or Puerto Rico municipal bonds and/or who used their UBS account assets as collateral for UBS non-purpose loans; customer complaint and arbitration allegations include fraud, misrepresentation and unsui tability of the funds and of the loans. A shareholder derivative action was filed in 2014 against various UBS entities and current and certain former directors of the funds, alleging hundreds of millions of US dollars in losses in the funds. In 2015, defen dants’ motion to dismiss was denied and a request for permission to appeal that ruling was denied by the Puerto Rico Supreme Court. In 2011, a purported derivative action was filed on behalf of the Employee Retirement System of the Commonwealth of Puerto Rico (System) against over 40 defendants, including UBS PR, which was named in connection with its underwriting and consulting services. Plaintiffs alleged that defendants violated their purported fiduciary duties and contractual obligations in connection with the issuance and underwriting of USD 3 billion of bonds by the System in 2008 and sought damages of over USD 800 million. In 2016, the court granted the System’s request to join the action as a plaintiff, but ordered that plaintiffs must file an amend ed complaint. In 2017, the court denied defendants’ motion to dismiss the amended complaint. In 2020, the court denied plaintiffs’ motion for summary judgment. Beginning in 2015, certain agencies and public corporations of the Commonwealth of Puerto Rico (Commonwealth) defaulted on certain interest payments on Puerto Rico bonds. In 2016, US federal legislation created an oversight board with power to oversee Puerto Rico’s finances and to restructure its debt. The oversight board has imposed a stay on the exercise of certain creditors’ rights. In 2017, the oversight board placed certain of the bonds i nto a bankruptcy-like proceeding under the supervision of a Federal District Judge. In May 2019, the oversight board filed complaints in Puerto Rico federal district court bringing claims against financial, legal and accounting firms that had participated in Puerto Rico municipal bond offerings, including UBS, seeking a return of underwriting and swap fees paid in connection with those offerings. UBS estimates that it received approximately USD 125 million in fees in the relevant offerings. In August 2019, and February and November 2020, four US insurance companies that insured issues of Puerto Rico municipal bonds sued UBS and several other underwriters of Puerto Rico municipal bonds. The actions collectively seek recovery of an aggregate of USD 955 millio n in damages from the defendants. The plaintiffs in these cases claim that defendants failed to reasonably investigate financial statements in the offering materials for the insured Puerto Rico bonds issued between 2002 and 2007, which plaintiffs argue the y relied upon in agreeing to insure the bonds notwithstanding that they had no contractual relationship with the underwriters. Our balance sheet at 31 December 2020 reflected provisions with respect to matters described in this item 4 in amounts that UBS b elieves to be appropriate under the applicable accounting standard. As in the case of other matters for which we have established provisions, the future outflow of resources in respect of such matters cannot be determined with certainty based on currently available information and accordingly may ultimately prove to be substantially greater (or may be less) than the provisions that we have recognized. 5. Foreign exchange, LIBOR and benchmark rates, and other trading practices Foreign exchange-related regula tory matters: Beginning in 2013, numerous authorities commenced investigations concerning possible manipulation of foreign exchange markets and precious metals prices. As a result of these investigations, UBS entered into resolutions with the UK Financial Conduct Authority (FCA), the US Commodity Futures Trading Commission (CFTC), FINMA, the Board of Governors of the Federal Reserve System (Federal Reserve Board) and the Connecticut Department of Banking, the DOJ’s Criminal Division and the European Commiss ion. UBS has ongoing obligations under the Cease and Desist Order of the Federal Reserve Board and the Office of the Comptroller of the Currency (as successor to the Connecticut Department of Banking), and to cooperate with relevant authorities and to unde rtake certain remediation measures. UBS has also been granted conditional immunity by the Antitrust Division of the DOJ and by authorities in other jurisdictions in connection with potential competition law violations relating to foreign exchange and preci ous metals businesses. Investigations relating to foreign exchange matters by certain authorities remain ongoing notwithstanding these resolutions. Foreign exchange-related civil litigation: Putative class actions have been filed since 2013 in US federal courts and in other jurisdictions against UBS and other banks on behalf of putative classes of persons who engaged in foreign currency transactions with any of the defendant banks. UBS has resolved US federal court class actions relating to foreign currenc y transactions with the defendant banks and persons who transacted in foreign exchange futures contracts and options on such futures under a settlement agreement that provides for UBS to pay an aggregate of USD 141 million and provide cooperation to the se ttlement classes. Certain class members have excluded themselves from that settlement and have filed individual actions in US and English courts against UBS and other banks, alleging violations of US and European competition laws and unjust enrichment. In 2015, a putative class action was filed in federal court against UBS and numerous other banks on behalf of persons and businesses in the US who directly purchased foreign currency from the defendants and alleged co-conspirators for their own end use. In Ma rch 2017, the court granted UBS’s (and the other banks’) motions to dismiss the complaint. The plaintiffs filed an amended complaint in August 2017. In March 2018, the court denied the defendants’ motions to dismiss the amended complaint. In 2017, two puta tive class actions were filed in federal court in New York against UBS and numerous other banks on behalf of persons and entities who had indirectly purchased foreign exchange instruments from a defendant or co-conspirator in the US, and a consolidated com plaint was filed in June 2017. In March 2018, the court dismissed the consolidated complaint. In October 2018, the court granted plaintiffs’ motion seeking leave to file an amended complaint. UBS and 11 other banks have reached an agreement with the plaint iffs to settle the class action for a total of USD 10 million. The court approved the settlement in November 2020. LIBOR and other benchmark-related regulatory matters: Numerous government agencies, including the SEC, the CFTC, the DOJ, the FCA, the UK Ser ious Fraud Office, the Monetary Authority of Singapore, the Hong Kong Monetary Authority, FINMA, various state attorneys general in the US and competition authorities in various jurisdictions, have conducted investigations regarding potential improper atte mpts by UBS, among others, to manipulate LIBOR and other benchmark rates at certain times. UBS reached settlements or otherwise concluded investigations relating to benchmark interest rates with the investigating authorities. UBS has ongoing obligations to cooperate with the authorities with whom we have reached resolutions and to undertake certain remediation measures with respect to benchmark interest rate submissions. UBS has been granted conditional leniency or conditional immunity from authorities in c ertain jurisdictions, including the Antitrust Division of the DOJ and the Swiss Competition Commission (WEKO), in connection with potential antitrust or competition law violations related to certain rates. However, UBS has not reached a final settlement wi th WEKO, as the Secretariat of WEKO has asserted that UBS does not qualify for full immunity. LIBOR and other benchmark-related c ivil litigation: A number of putative class actions and other actions are pending in the federal courts in New York against UBS and numerous other banks on behalf of parties who transacted in certain interest rate benchmark-based derivatives. Also pending in the US and in other jurisdictions are a number of other actions asserting losses related to various products whose interest rates were linked to LIBOR and other benchmarks, including adjustable rate mortgages, preferred and debt securities, bonds pledge d as collateral, loans, depository accounts, investments and other interest-bearing instruments. The complaints allege manipulation, through various means, of certain benchmark interest rates, including USD LIBOR, Euroyen TIBOR, Yen LIBOR, EURIBOR, CHF LIB OR, GBP LIBOR, SGD SIBOR and SOR and Australian BBSW, and seek unspecified compensatory and other damages under varying legal theories. USD LIBOR class and individual actions in the US: In 2013 and 2015, the district court in the USD LIBOR actions dismisse d, in whole or in part, certain plaintiffs’ antitrust claims, federal racketeering claims, CEA claims, and state common law claims. Although the Second Circuit vacated the district court’s judgment dismissing antitrust claims, the district court again dism issed antitrust claims against UBS in 2016. Certain plaintiffs have appealed that decision to the Second Circuit. Separately, in 2018, the Second Circuit reversed in part the district court’s 2015 decision dismissing certain individual plaintiffs’ claims a nd certain of these actions are now proceeding. UBS entered into an agreement in 2016 with representatives of a class of bondholders to settle their USD LIBOR class action. The agreement has received final court approval. In 2018, the district court denied plaintiffs’ motions for class certification in the USD class actions for claims pending against UBS, and plaintiffs sought permission to appeal that ruling to the Second Circuit. In July 2018, the Second Circuit denied the petition to appeal of the class of USD lenders and in November 2018 denied the petition of the USD exchange class. In December 2019, UBS entered into an agreement with representatives of the class of USD lenders to settle their USD LIBOR class action. The agreement has received final cou rt approval. In January 2019, a putative class action was filed in the District Court for the Southern District of New York against UBS and numerous other banks on behalf of US residents who, since 1 February 2014, directly transacted with a defendant bank in USD LIBOR instruments. The complaint asserts antitrust claims. The defendants moved to dismiss the complaint in August 2019. On 26 March 2020 the court granted defendants’ motion to dismiss the complaint in its entirety. Plaintiffs have appealed the di smissal. In August 2020, an individual action was filed in the Northern District of California against UBS and numerous other banks alleging that the defendants conspired to fix the interest rate used as the basis for loans to consumers by jointly setting the USD LIBOR rate and monopolized the market for LIBOR-based consumer loans and credit cards. Other benchmark class actions in the US: In 2014, 2015 and 2017, the court in one of the Euroyen TIBOR lawsuits dismissed certain of the plaintiffs’ claims, in cluding plaintiffs’ federal antitrust and racketeering claims. In August 2020, the court granted defendants’ motion for judgment on the pleadings and dismissed the lone remaining claim in the action as impermissibly extraterritorial. Plaintiffs have appeal ed. In 2017, the court dismissed the other Yen LIBOR / Euroyen TIBOR action in its entirety on standing grounds. In April 2020, the appeals court reversed the dismissal and in August 2020 plaintiffs in that action filed an amended complaint. Defendants mov ed to dismiss the amended complaint in October 2020. In 2017, the court dismissed the CHF LIBOR action on standing grounds and failure to state a claim. Plaintiffs filed an amended complaint following the dismissal, and the court granted a renewed motion t o dismiss in September 2019. Plaintiffs have appealed. Also in 2017, the court in the EURIBOR lawsuit dismissed the case as to UBS and certain other foreign defendants for lack of personal jurisdiction. Plaintiffs have appealed. In October 2018, the court in the SIBOR / SOR action dismissed all but one of plaintiffs’ claims against UBS. Plaintiffs filed an amended complaint following the dismissal, and the courts granted a renewed motion to dismiss in July 2019. Plaintiffs have appealed. In November 2018, t he court in the BBSW lawsuit dismissed the case as to UBS and certain other foreign defendants for lack of personal jurisdiction. Following that dismissal, plaintiffs filed an amended complaint in April 2019, which UBS and other defendants named in the ame nded complaint moved to dismiss. In February 2020, the court in the BBSW action granted in part and denied in part defendants’ motions to dismiss the amended complaint. In August 2020, UBS and other BBSW def
UBS AG
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Disclosure Of Contingent Liabilities Explanatory	Note 18 Provisions and contingent liabilities b) Litigation, regulatory and similar matters Specific litigation, regulatory and other matters are described below, including all such matters that management considers to be material and others that management believes to be of s ignificance due to potential financial, reputational and other effects. The amount of damages claimed, the size of a transaction or other information is provided where available and appropriate in order to assist users in considering the magnitude of poten tial exposures. In the case of certain matters below, we state that we have established a provision, and for the other matters, we make no such statement. When we make this statement and we expect disclosure of the amount of a provision to prejudice seriou sly our position with other parties in the matter because it would reveal what UBS believes to be the probable and reliably estimable outflow, we do not disclose that amount. In some cases we are subject to confidentiality obligations that preclude such di sclosure. With respect to the matters for which we do not state whether we have established a provision, either: (a) we have not established a provision, in which case the matter is treated as a contingent liability under the applicable accounting standard ; or (b) we have established a provision but expect disclosure of that fact to prejudice seriously our position with other parties in the matter because it would reveal the fact that UBS believes an outflow of resources to be probable and reliably estimabl e. With respect to certain litigation, regulatory and similar matters for which we have established provisions, we are able to estimate the expected timing of outflows. However, the aggregate amount of the expected outflows for those matters for which we a re able to estimate expected timing is immaterial relative to our current and expected levels of liquidity over the relevant time periods. The aggregate amount provisioned for litigation, regulatory and similar matters as a class is disclosed in the “Provi sions” table in Note 18a above. It is not practicable to provide an aggregate estimate of liability for our litigation, regulatory and similar matters as a class of contingent liabilities. Doing so would require UBS to provide speculative legal assessments as to claims and proceedings that involve unique fact patterns or novel legal theories, that have not yet been initiated or are at early stages of adjudication, or as to which alleged damages have not been quantified by the claimants. Although UBS therefo re cannot provide a numerical estimate of the future losses that could arise from litigation, regulatory and similar matters, UBS believes that the aggregate amount of possible future losses from this class that are more than remote substantially exceeds t he level of current provisions. Litigation, regulatory and similar matters may also result in non-monetary penalties and consequences. For example, the non-prosecution agreement UBS entered into with the US Department of Justice (DOJ), Criminal Division, Fraud Section in connection with submissions of benchmark interest rates, including, among others, the British Bankers’ Association London Interbank Offered Rate (LIBOR), was terminated by the DOJ based on its determination that UBS had committed a US crim e in relation to foreign exchange matters. As a consequence, UBS AG pleaded guilty to one count of wire fraud for conduct in the LIBOR matter, paid a fine and was subject to probation, which ended in January 2020. A guilty plea to, or conviction of, a crime could have material consequences for UBS. Resolution of regulatory proceedings may require UBS to obtain waivers of regulatory disqualifications to maintain certain operations, may entitle regulatory authorities to limit, suspend or terminate license s and regulatory authorizations, and may permit financial market utilities to limit, suspend or terminate UBS’s participation in such utilities. Failure to obtain such waivers, or any limitation, suspension or termination of licenses, authorizations or par ticipations, could have material consequences for UBS. The risk of loss associated with litigation, regulatory and similar matters is a component of operational risk for purposes of determining capital requirements. Information concerning our capital requi rements and the calculation of operational risk for this purpose is included in the “ Capital, liquidity and funding, and balance sheet ” section of this report. Provisions for litigation, regulatory and similar matters by business division and in Group Functions 1 USD million Global Wealth Manage- ment Personal & Corporate Banking Asset Manage- ment Investment Bank Group Functions Total 2020 Total 2019 Balance at the beginning of the year 782 113 0 255 1,325 2,475 2,827 Increase in provisions recognized in the income statement 213 0 0 19 1 233 258 Release of provisions recognized in the income statement (24) (6) 0 (1) (2) (33) (81) Provisions used in conformity with designated purpose (154) (1) 0 (52) (395) (603) (518) Reclassifications 0 0 0 (3) 3 0 0 Foreign currency translation / unwind of discount 44 10 0 10 0 64 (12) Balance at the end of the year 861 115 0 227 932 2,135 2,475 1 Provisions, if any, for matters described in this disclosure are recorded in Global Wealth Management (item 3 and item 4) and Group Functions (item 2). Provisions, if any, for the matters described in items 1 and 6 of this disclosure are allocated between Global Wealth Management and Personal & Corporate Banking, and provisions, if any, for the matters described in this disclosure in item 5 are allocated between the Investment Bank and Group Functions. 1. Inquiries regarding cross-border wealth management businesses Tax and regulatory authorities in a number of countries have made inquiries, served requests for information or examined emplo yees located in their respective jurisdictions relating to the cross-border wealth management services provided by UBS and other financial institutions. It is possible that the implementation of automatic tax information exchange and other measures relatin g to cross-border provision of financial services could give rise to further inquiries in the future. UBS has received disclosure orders from the Swiss Federal Tax Administration (FTA) to transfer information based on requests for international administrat ive assistance in tax matters. The requests concern a number of UBS account numbers pertaining to current and former clients and are based on data from 2006 and 2008. UBS has taken steps to inform affected clients about the administrative assistance procee dings and their procedural rights, including the right to appeal. The requests are based on data received from the German authorities, who seized certain data related to UBS clients booked in Switzerland during their investigations and have apparently shar ed this data with other European countries. UBS expects additional countries to file similar requests. The Swiss Federal Administrative Court ruled in 2016 that, in the administrative assistance proceedings related to a French bulk request, UBS has the rig ht to appeal all final FTA client data disclosure orders. On 30 July 2018, the Swiss Federal Administrative Court granted UBS’s appeal by holding the French administrative assistance request inadmissible. The FTA filed a final appeal with the Swiss Federal Supreme Court. On 26 July 2019, the Supreme Court reversed the decision of the Federal Administrative Court. In December 2019, the court released its written decision. The decision requires the FTA to obtain confirmation from the French authorities that t ransmitted data will be used only for the purposes stated in their request before transmitting any data. The stated purpose of the original request was to obtain information relating to taxes owed by account holders. Accordingly, any information transferre d to the French authorities must not be passed to criminal authorities or used in connection with the ongoing case against UBS discussed in this item. In February 2020, the FTA ordered that UBS would not be granted party status in the French administrative assistance proceedings. UBS appealed this decision to the Federal Administrative Court. On 15 July, the Federal Administrative Court upheld the FTA’s decision, holding that UBS will no longer have party status in these proceedings. The Swiss Federal Supre me Court has determined that it will not hear UBS’s appeal of this decision. Since 2013, UBS (France) S.A., UBS AG and certain former employees have been under investigation in France for alleged complicity in unlawful solicitation of clients on French ter ritory, regarding the laundering of proceeds of tax fraud, and banking and financial solicitation by unauthorized persons. In connection with this investigation, the investigating judges ordered UBS AG to provide bail (“ caution ”) of EUR 1.1 billion and UBS (France) S.A. to post bail of EUR 40 million, which was reduced on appeal to EUR 10 million. A trial in the court of first instance took place from 8 October 2018 until 15 November 2018. On 20 February 2019, the court announced a verdict finding UBS AG g uilty of unlawful solicitation of clients on French territory and aggravated laundering of the proceeds of tax fraud, and UBS (France) S.A. guilty of aiding and abetting unlawful solicitation and laundering the proceeds of tax fraud. The court imposed fine s aggregating EUR 3.7 billion on UBS AG and UBS (France) S.A. and awarded EUR 800 million of civil damages to the French state. UBS has appealed the decision. Under French law, the judgment is suspended while the appeal is pending. The trial originally sch eduled for 2 June 2020 has been rescheduled to 8-24 March 2021. The Court of Appeal will retry the case de novo as to both the law and the facts, and the fines and penalties can be greater than or less than those imposed by the court of first instance. A s ubsequent appeal to the Cour de Cassation, France’s highest court, is possible with respect to questions of law. UBS believes that based on both the law and the facts the judgment of the court of first instance should be reversed. UBS believes it followed its obligations under Swiss and French law as well as the European Savings Tax Directive. Even assuming liability, which it contests, UBS believes the penalties and damage amounts awarded greatly exceed the amounts that could be supported by the law and th e facts. In particular, UBS believes the court incorrectly based the penalty on the total regularized assets rather than on any unpaid taxes on those assets for which a fraud has been characterized and further incorrectly awarded damages based on costs tha t were not proven by the civil party. Notwithstanding that UBS believes it should be acquitted, our balance sheet at 31 December 2020 reflected provisions with respect to this matter in an amount of EUR 450 million (USD 549 million at 31 December 2020). Th e wide range of possible outcomes in this case contributes to a high degree of estimation uncertainty. The provision reflected on our balance sheet at 31 December 2020 reflects our best estimate of possible financial implications, although it is reasonably possible that actual penalties and civil damages could exceed the provision amount. In 2016, UBS was notified by the Belgian investigating judge that it is under formal investigation (“ inculpé ”) regarding the laundering of proceeds of tax fraud, of banking and financial solicitation by unauthorized persons, and of serious tax fraud. Our balance sheet at 31 December 2020 reflected provisions with respect to matters described in this item 1 in an amount that UBS believes to be appropriate under the applicable accounting standard. As in the case of other matters for which we have established provisions, the future outflow of resources in respect of such matters cannot be determined with certainty based on curr ently available information and accordingly may ultimately prove to be substantially greater (or may be less) than the provision that we have recognized. 2. Claims related to sales of residential mortgage-backed securities and mortgages From 2002 through 2007, prior to the crisis in the US residential loan market, UBS was a substantial issuer and underwriter of US residential mortgage-backed securities (RMBS) and was a purchaser and seller of US residential mortgages. In November 2018, the DOJ filed a civil complaint in the District Court for the Eastern District of New Y ork. The complaint seeks unspecified civil monetary penalties under the Financial Institutions Reform, Recovery and Enforcement Act of 1989 related to UBS’s issuance, underwriting and sale of 40 RMBS transactions in 2006 and 2007. UBS moved to dismiss the civil complaint on 6 February 2019. On 10 December 2019, the district court denied UBS’s motion to dismiss. Our balance sheet at 31 December 2020 reflected a provision w ith respect to matters described in this item 2 in an amount that UBS believes to be appropriate under the applicable accounting standard. As in the case of other matters for which we have established provisions, the future outflow of resources in respect of this matter cannot be determined with certainty based on currently available information and accordingly may ultimately prove to be substantially greater (or may be less) than the provision that we have recognized. 3. Madoff In relation to the Bernard L . Madoff Investment Securities LLC (BMIS) investment fraud, UBS AG, UBS (Luxembourg) S.A. (now UBS Europe SE, Luxembourg branch) and certain other UBS subsidiaries have been subject to inquiries by a number of regulators, including the Swiss Financial Mark et Supervisory Authority (FINMA) and the Luxembourg Commission de Surveillance du Secteur Financier. Those inquiries concerned two third-party funds established under Luxembourg law, substantially all assets of which were with BMIS, as well as certain fund s established in offshore jurisdictions with either direct or indirect exposure to BMIS. These funds faced severe losses, and the Luxembourg funds are in liquidation. The documentation establishing both funds identifies UBS entities in various roles, inclu ding custodian, administrator, manager, distributor and promoter, and indicates that UBS employees serve as board members. In 2009 and 2010, the liquidators of the two Luxembourg funds filed claims against UBS entities, non-UBS entities and certain individ uals, including current and former UBS employees, seeking amounts totaling approximately EUR 2.1 billion, which includes amounts that the funds may be held liable to pay the trustee for the liquidation of BMIS (BMIS Trustee). A large number of alleged bene ficiaries have filed claims against UBS entities (and non-UBS entities) for purported losses relating to the Madoff fraud. The majority of these cases have been filed in Luxembourg, where decisions that the claims in eight test cases were inadmissible have been affirmed by the Luxembourg Court of Appeal, and the Luxembourg Supreme Court has dismissed a further appeal in one of the test cases. In the US, the BMIS Trustee filed claims against UBS entities, among others, in relation to the two Luxembourg fund s and one of the offshore funds. The total amount claimed against all defendants in these actions was not less than USD 2 billion. In 2014, the US Supreme Court rejected the BMIS Trustee’s motion for leave to appeal decisions dismissing all claims except t hose for the recovery of approximately USD 125 million of payments alleged to be fraudulent conveyances and preference payments. In 2016, the bankruptcy court dismissed these claims against the UBS entities. In February 2019, the Court of Appeals reversed the dismissal of the BMIS Trustee’s remaining claims, and the US Supreme Court subsequently denied a petition seeking review of the Court of Appeals’ decision. The case has been remanded to the Bankruptcy Court for further proceedings. 4. Puerto Rico Decli nes since 2013 in the market prices of Puerto Rico municipal bonds and of closed-end funds (funds) that are sole-managed and co-managed by UBS Trust Company of Puerto Rico and distributed by UBS Financial Services Incorporated of Puerto Rico (UBS PR) led t o multiple regulatory inquiries, which in 2014 and 2015, led to settlements with the Office of the Commissioner of Financial Institutions for the Commonwealth of Puerto Rico, the US Securities and Exchange Commission (SEC) and the Financial Industry Regula tory Authority in relation to their examinations of UBS’s operations. Since that time UBS has received customer complaints and arbitrations with aggregate claimed damages of USD 3.4 billion, of which claims with aggregate claimed damages of USD 2.8 billio n have been resolved through settlements, arbitration or withdrawal of the claim. The claims have been filed by clients in Puerto Rico who own the funds or Puerto Rico municipal bonds and/or who used their UBS account assets as collateral for UBS non-purpo se loans; customer complaint and arbitration allegations include fraud, misrepresentation and unsuitability of the funds and of the loans. A shareholder derivative action was filed in 2014 against various UBS entities and current and certain former directo rs of the funds, alleging hundreds of millions of US dollars in losses in the funds. In 2015, defendants’ motion to dismiss was denied and a request for permission to appeal that ruling was denied by the Puerto Rico Supreme Court. In 2011, a purported der ivative action was filed on behalf of the Employee Retirement System of the Commonwealth of Puerto Rico (System) against over 40 defendants, including UBS PR, which was named in connection with its underwriting and consulting services. Plaintiffs alleged t hat defendants violated their purported fiduciary duties and contractual obligations in connection with the issuance and underwriting of USD 3 billion of bonds by the System in 2008 and sought damages of over USD 800 million. In 2016, the court granted the System’s request to join the action as a plaintiff, but ordered that plaintiffs must file an amended complaint. In 2017, the court denied defendants’ motion to dismiss the amended complaint. In 2020, the court denied plaintiffs’ motion for summary judgmen t. Beginning in 2015, certain agencies and public corporations of the Commonwealth of Puerto Rico (Commonwealth) defaulted on certain interest payments on Puerto Rico bonds. In 2016, US federal legislation created an oversight board with power to oversee Puerto Rico’s finances and to restructure its debt. The oversight board has imposed a stay on the e xercise of certain creditors’ rights. In 2017, the oversight board placed certain of the bonds into a bankruptcy-like proceeding under the supervision of a Federal District Judge. In May 2019, the oversight board filed complaints in Puerto Rico federal di strict court bringing claims against financial, legal and accounting firms that had participated in Puerto Rico municipal bond offerings, including UBS, seeking a return of underwriting and swap fees paid in connection with those offerings. UBS estimates t hat it received approximately USD 125 million in fees in the relevant offerings. In August 2019, and February and November 2020, four US insurance companies that insured issues of Puerto Rico municipal bonds sued UBS and several other underwriters of Puert o Rico municipal bonds. The actions collectively seek recovery of an aggregate of USD 955 million in damages from the defendants. The plaintiffs in these cases claim that defendants failed to reasonably investigate financial statements in the offering mate rials for the insured Puerto Rico bonds issued between 2002 and 2007, which plaintiffs argue they relied upon in agreeing to insure the bonds notwithstanding that they had no contractual relationship with the underwriters. Our balance sheet at 31 December 2020 reflected provisions with respect to matters described in this item 4 in amounts that UBS believes to be appropriate under the applicable accounting standard. As in the case of other matters for which we have established provisions, the future outflow of resources in respect of such matters cannot be determined with certainty based on currently available information and accordingly may ultimately prove to be substantially greater (or may be less) than the provisions that we have recognized. 5. Foreign exchange, LIBOR and benchmark rates, and other trading practices Foreign exchange-related regulatory matters: Beginning in 2013, numerous authorities commenced investigations concerning possible manipulation of foreign exchange markets and precious metals prices. As a result of these investigations, UBS entered into resolutions with the UK Financial Conduct Authority (FCA), the US Commodity Futures Trading Commission (CFTC), FINMA, the Board of Governors of the Federal Reserve System (Federal Reserve Board) and the Connecticut Department of Banking, the DOJ’s Criminal Division and the European Commission. UBS has ongoing obligations under the Cease and Desist Order of the Federal Reserve Board and the Office of the Comptroller of the Currency (as successor t o the Connecticut Department of Banking), and to cooperate with relevant authorities and to undertake certain remediation measures. UBS has also been granted conditional immunity by the Antitrust Division of the DOJ and by authorities in other jurisdiction s in connection with potential competition law violations relating to foreign exchange and precious metals businesses. Investigations relating to foreign exchange matters by certain authorities remain ongoing notwithstanding these resolutions. Foreign exc hange-related civil litigation: Putative class actions have been filed since 2013 in US federal courts and in other jurisdictions against UBS and other banks on behalf of putative classes of persons who engaged in foreign currency transactions with any of the defendant banks. UBS has resolved US federal court class actions relating to foreign currency transactions with the defendant banks and persons who transacted in foreign exchange futures contracts and options on such futures under a settlement agreemen t that provides for UBS to pay an aggregate of USD 141 million and provide cooperation to the settlement classes. Certain class members have excluded themselves from that settlement and have filed individual actions in US and English courts against UBS and other banks, alleging violations of US and European competition laws and unjust enrichment. In 2015, a putative class action was filed in federal court against UBS and numerous other banks on behalf of persons and businesses in the US who directly purchas ed foreign currency from the defendants and alleged co-conspirators for their own end use. In March 2017, the court granted UBS’s (and the other banks’) motions to dismiss the complaint. The plaintiffs filed an amended complaint in August 2017. In March 20 18, the court denied the defendants’ motions to dismiss the amended complaint. In 2017, two putative class actions were filed in federal court in New York against UBS and numerous other banks on behalf of persons and entities who had indirectly purchased f oreign exchange instruments from a defendant or co-conspirator in the US, and a consolidated complaint was filed in June 2017. In March 2018, the court dismissed the consolidated complaint. In October 2018, the court granted plaintiffs’ motion seeking leav e to file an amended complaint. UBS and 11 other banks have reached an agreement with the plaintiffs to settle the class action for a total of USD 10 million. The court approved the settlement in November 2020. LIBOR and other benchmark-related regulatory matters: Numerous government agencies, including the SEC, the CFTC, the DOJ, the FCA, the UK Serious Fraud Office, the Monetary Authority of Singapore, the Hong Kong Monetary Authority, FINMA, various state attorneys general in the US and competition autho rities in various jurisdictions, have conducted investigations regarding potential improper attempts by UBS, among others, to manipulate LIBOR and other benchmark rates at certain times. UBS reached settlements or otherwise concluded investigations relatin g to benchmark interest rates with the investigating authorities. UBS has ongoing obligations to cooperate with the authorities with whom we have reached resolutions and to undertake certain remediation measures with respect to benchmark interest rate subm issions. UBS has been granted conditional leniency or conditional immunity from authorities in certain jurisdictions, including the Antitrust Division of the DOJ and the Swiss Competition Commission (WEKO), in connection with potential antitrust or competi tion law violations related to certain rates. However, UBS has not reached a final settlement with WEKO, as the Secretariat of WEKO has asserted that UBS does not qualify for full immunity. LIBOR and other benchmark-related civil litigation: A number of putative class actions and other actions are pending in the federal courts in New York against UBS and numerous other ban ks on behalf of parties who transacted in certain interest rate benchmark-based derivatives. Also pending in the US and in other jurisdictions are a number of other actions asserting losses related to various products whose interest rates were linked to LI BOR and other benchmarks, including adjustable rate mortgages, preferred and debt securities, bonds pledged as collateral, loans, depository accounts, investments and other interest-bearing instruments. The complaints allege manipulation, through various m eans, of certain benchmark interest rates, including USD LIBOR, Euroyen TIBOR, Yen LIBOR, EURIBOR, CHF LIBOR, GBP LIBOR, SGD SIBOR and SOR and Australian BBSW, and seek unspecified compensatory and other damages under varying legal theories. USD LIBOR clas s and individual actions in the US: In 2013 and 2015, the district court in the USD LIBOR actions dismissed, in whole or in part, certain plaintiffs’ antitrust claims, federal racketeering claims, CEA claims, and state common law claims. Although the Secon d Circuit vacated the district court’s judgment dismissing antitrust claims, the district court again dismissed antitrust claims against UBS in 2016. Certain plaintiffs have appealed that decision to the Second Circuit. Separately, in 2018, the Second Circ uit reversed in part the district court’s 2015 decision dismissing certain individual plaintiffs’ claims and certain of these actions are now proceeding. UBS entered into an agreement in 2016 with representatives of a class of bondholders to settle their U SD LIBOR class action. The agreement has received final court approval. In 2018, the district court denied plaintiffs’ motions for class certification in the USD class actions for claims pending against UBS, and plaintiffs sought permission to appeal that ruling to the Second Circuit. In July 2018, the Second Circuit denied the petition to appeal of the class of USD lenders and in November 2018 denied the petition of the USD exchange class. In December 2019, UBS entered into an agreement with representative s of the class of USD lenders to settle their USD LIBOR class action. The agreement has received final court approval. In January 2019, a putative class action was filed in the District Court for the Southern District of New York against UBS and numerous o ther banks on behalf of US residents who, since 1 February 2014, directly transacted with a defendant bank in USD LIBOR instruments. The complaint asserts antitrust claims. The defendants moved to dismiss the complaint in August 2019. On 26 March 2020 the court granted defendants’ motion to dismiss the complaint in its entirety. Plaintiffs have appealed the dismissal. In August 2020, an individual action was filed in the Northern District of California against UBS and numerous other banks alleging that the defendants conspired to fix the interest rate used as the basis for loans to consumers by jointly setting the USD LIBOR rate and monopolized the market for LIBOR-based consumer loans and credit cards. Other benchmark class actions in the US: In 2014, 2015 and 2017, the court in one of the Euroyen TIBOR lawsuits dismissed certain of the plaintiffs’ claims, including plaintiffs’ federal antitrust and racketeering claims. In August 2020, the court granted defendants’ motion for judgment on the pleadings and dismissed the lone remaining claim in the action as impermissibly extraterritorial. Plaintiffs have appealed. In 2017, the court dismissed the other Yen LIBOR / Euroyen TIBOR action in its entirety on standing grounds. In April 2020, the appeals court reve rsed the dismissal and in August 2020 plaintiffs in that action filed an amended complaint. Defendants moved to dismiss the amended complaint in October 2020. In 2017, the court dismissed the CHF LIBOR action on standing grounds and failure to state a clai m. Plaintiffs filed an amended complaint following the dismissal, and the court granted a renewed motion to dismiss in September 2019. Plaintiffs have appealed. Also in 2017, the court in the EURIBOR lawsuit dismissed the case as to UBS and certain other f oreign defendants for lack of personal jurisdiction. Plaintiffs have appealed. In October 2018, the court in the SIBOR / SOR action dismissed all but one of plaintiffs’ claims against UBS. Plaintiffs filed an amended complaint following the dismissal, and the courts granted a renewed motion to dismiss in July 2019. Plaintiffs have appealed. In November 2018, the court in the BBSW lawsuit dismissed the case as to UBS and certain other foreign defendants for lack of personal jurisdiction. Following that dismi ssal, plaintiffs filed an amended complaint in April 2019, which UBS and other defendants named in the amended complaint moved to dismiss. In February 2020, the court in the BBSW action granted in part and denied in part defendants’ motions to dismiss the amended complaint. In August 2020, UBS and other BBSW defendants joined a motion for judgment on the pleadings. The court dismissed the GBP LIBOR action in August 2019. Plaintiffs have appealed. Government bonds: Putative class actions have been filed sin ce 2015 in US federal courts against UBS and other banks on behalf of persons who participated in markets for US Treasury securities since 2007. A consolidated complaint was filed in 2017 in the US District Court for the Southern District of New York alleg ing that the banks colluded with respect to, and manipulated prices of, US Treasury securities sold at auction and in the secondary market and asserting claims under the antitrust laws and for unjust enrichment. Defendants’ motions to dismiss the consolida ted complaint are pending. Similar class actions have been filed concerning European government bonds and other government bonds. UBS and reportedly other banks are responding to investigations and requests for information from various authorities regardin g government bond trading practices. As a result of its review to date, UBS has taken appropriate action. 6. Swiss retrocessions The Federal Supreme Court of Switzerland ruled in 2012, in a test case against UBS, that distribution fees paid to a firm for distributing third-party and intra-group investment funds and structured products must be disclosed and surrendered to clients who have entered into a discretionary mandate agreement with the firm, absent a valid waiver. FINMA issued a supervis ory note to all Swiss banks in response to the Supreme Court decision. UBS has met the FINMA requirements and has notified all potentially affected clients. The Supreme Court decision has resulted, and may continue to result, in a number of client requests for UBS to disclose and potentially surrender retrocessions. Client requests are assessed on a case-by-case basis. Considerations taken into account when assessing these cases include, among other things, the existence of a discretionary mandate and wheth er or not the client documentation contained a valid waiver with respect to distribution fees. Our balance sheet at 31 December 2020 reflected a provision with respect to matters described in this item 6 in an amount that UBS believes to be appropriate und er the applicable accounting standard. The ultimate exposure will depend on client requests and the resolution thereof, factors that are difficult to predict and assess. Hence, as in the case of other matters for which we have established provisions, the f uture outflow

Other financial and non-finan_2

Other financial and non-financial liabilities	12 Months Ended
Other financial and non-financial liabilities	Dec. 31, 2020
Other Financial And Non Financial Liabilities [Line Items]
Other Financial And Non Financial Liabilities Explanatory	Note 19 Other liabilities a) Other financial liabilities measured at amortized cost USD million 31.12.20 31.12.19 Other accrued expenses 1,696 1,928 Accrued interest expenses 1,355 1,562 Settlement and clearing accounts 1,199 1,379 Lease liabilities 3,927 3,943 Other 1,553 900 Total other financial liabilities measured at amortized cost 9,729 9,712 b) Other financial liabilities designated at fair value USD million 31.12.20 31.12.19 Financial liabilities related to unit-linked investment contracts 20,975 28,145 Securities financing transactions 7,317 5,742 Over-the-counter debt instruments 2,060 2,022 Other 35 31 Total other financial liabilities designated at fair value 30,387 35,940 of which: life-to-date own credit (gain) / loss (36) (4) c) Other non-financial liabilities USD million 31.12.20 31.12.19 Compensation-related liabilities 1,2 7,468 6,855 of which: Deferred Contingent Capital Plan 1,858 1,855 of which: financial advisor compensation plans 2 1,500 1,506 of which: other compensation plans 2,740 2,310 of which: net defined benefit liability 722 633 of which: other compensation-related liabilities 3 648 552 Deferred tax liabilities 564 311 Current tax liabilities 1,009 852 VAT and other tax payables 523 475 Deferred income 228 141 Other 61 202 Total other non-financial liabilities 9,854 8,837 1 In 2020, UBS modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees. Refer to Note 1b for more information. 2 Comparative-period information has been restated. Refer to Note 1b for more information. 3 Includes liabilities for payroll taxes and untaken vacation.
UBS AG
Other Financial And Non Financial Liabilities [Line Items]
Other Financial And Non Financial Liabilities Explanatory	Note 19 Other liabilities a) Other financial liabilities measured at amortized cost USD million 31.12.20 31.12.19 Other accrued expenses 1,508 1,697 Accrued interest expenses 1,382 1,596 Settlement and clearing accounts 1,181 1,368 Lease liabilities 3,821 3,858 Other 1 2,530 1,854 Total other financial liabilities measured at amortized cost 10,421 10,373 1 In 2020 UBS AG modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees. Refer to Note 1b for more information. b) Other financial liabilities designated at fair value USD million 31.12.20 31.12.19 Financial liabilities related to unit-linked investment contracts 20,975 28,145 Securities financing transactions 7,317 5,742 Over-the-counter debt instruments 2,060 2,022 Funding from UBS Group AG and its subsidiaries 1,375 217 Other 46 31 Total other financial liabilities designated at fair value 31,773 36,157 of which: life-to-date own credit (gain) / loss 148 6 c) Other non-financial liabilities USD million 31.12.20 31.12.19 Compensation-related liabilities 1 4,776 4,339 of which: financial advisor compensation plans 1 1,497 1,502 of which: other compensation plans 2,034 1,750 of which: net defined benefit liability 711 629 of which: other compensation-related liabilities 2 534 458 Deferred tax liabilities 558 311 Current tax liabilities 943 780 VAT and other tax payables 470 445 Deferred income 212 134 Other 61 202 Total other non-financial liabilities 7,018 6,211 1 Comparative-period information has been restated. Refer to Note 1b for more information. 2 Includes liabilities for payroll taxes and untaken vacation.

Expected credit loss measuremen

Expected credit loss measurement	12 Months Ended
Expected credit loss measurement	Dec. 31, 2020
Disclosure Of Provision Matrix [Line Items]
Disclosure Of Financial Assets Explanatory	Additional information Note 20 Expected credit loss measurement a) Expected credit losses in the period Total net credit loss expenses were USD 694 million in 2020, reflecting net credit loss expenses of USD 266 million related to stage 1 and 2 positions and USD 429 million net credit loss expenses related to credit-impaired (stage 3) positions. Stage 1 and 2 net credit loss expenses of USD 266 million were primarily driven by a net expense of USD 200 million from updating the forward-looking scenarios and their associated weightings, factoring in updated macroeconomic assumptions to reflect the effects of the COVID-19 pandemic, with approximately half from the baseline scenario and half from the severe downside scenario. The main drivers included updated GDP and unemployment assumptions in Switzerland and the US, primarily impacting Large corporate clients and, to a lesser extent, Private clients with mortgages , Real estate financing and S ME clients . These scenario updates impacted remeasurements for stage 1 and 2 positions without stage transfers and triggered exposure movements between stages, primarily from stage 1 to stage 2 as probabilities of default increased. In addition to the scenario related effects, stage 1 and 2 expenses of USD 73 million arose from new transactions , net of releases from derecognized transactions , primarily from Large corporate clients and SME clients . A further USD 32 million stage 1 and 2 net release of expenses resulted from a number of model updates, primarily impacting Financial intermediaries , Real estate financing and SME clients . The remaining stage 1 and 2 expenses of USD 24 million mainly reflect the effects of post-model adjustments for selected exposures to Swiss SME clients , as well as remeasurements within the loan book, mainly in the Investment Bank. The changes in the macroeconomic environment in the second half of 2020 generally included more optimistic forward-looking assu mptions for both the baseline and severe downside scenarios compared with those applied in the first half of the year . Management applied a post-model expense adjustment of USD 117 million to offset the stage 1 and 2 releases that would have otherwise aris en, deeming them to be premature given the high degree of prevailing uncertainties and the wide range of reasonable possible outcomes . › Refer to Note 20 b for more information Stage 3 net expenses of USD 429 million were recognized across a number of defau lted positions. In the Investment Bank, stage 3 net expenses of USD 217 million were recognized, of which USD 81 million related to an exposure to a client in the travel sector. In Personal & Corporate Banking, stage 3 net expenses of USD 128 million were recognized, of which USD 59 million related to a case of fraud at a commodity trade finance counterparty, which affected a number of lenders, including UBS. In Global Wealth Management , stage 3 net expenses of USD 40 million were recognized, p rimarily across a small number of collateralized and securities-based lending positions. In Group Functions , stage 3 expenses of USD 42 million were recognized from one energy-related exposure in the Non-core and L egacy P ortfolio. Credit loss (expense) / release USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions Total For the year ended 31.12.20 Stages 1 and 2 (48) (129) 0 (88) 0 (266) Stage 3 (40) (128) (2) (217) (42) (429) Total credit loss (expense) / release (88) (257) (2) (305) (42) (694) For the year ended 31.12.19 Stages 1 and 2 3 23 0 (4) 0 22 Stage 3 (23) (44) 0 (26) (7) (100) Total credit loss (expense) / release (20) (21) 0 (30) (7) (78) For the year ended 31.12.18 Stages 1 and 2 0 0 0 (9) (1) (9) Stage 3 (15) (56) 0 (29) (8) (109) Total credit loss (expense) / release (15) (56) 0 (38) (8) (118) b) Changes to ECL models, scenarios, scenario weights and key inputs Refer to Note 1a for information about the principles governing ECL models, scenarios, scenario weights and key inputs applied. During 2020, management carefully considered guidance issued by supervisory authorities concerning the interpretation of key elements of IFRS 9, Financial instruments , in the context of COVID-19. Governance C omprehensive cross-functional and cross-divisional governance processes are in place and used to discuss and approve scenario updates and weights, to assess whether significant increases in credit risk resulted in stage transfer s , to review model outputs and to reach conclu sions regarding post - model adjustments. Model changes During 2020, the probability of default ( PD ) and loss given default ( LGD ) models applied to Financial i ntermediaries , Large corporate clients , Real estate financing and SME clients were revised to reflect updates to PD and LGD ris k drivers and macroeconomic dependencies. The model updates resulted in a USD 32 million decrease in ECL allowances, primarily in Personal & Corporate Banking across Financial intermediaries , Real estate financing and SME clients . Scenario and key input u pdates During 2020, the four scenarios and related macroeconomic factors that were applied at the end of 2019 were reviewed in light of the economic and political conditions and prevailing uncertainties through a series of governance meetings, with input f rom UBS risk and finance experts across the regions and business divisions. Scenario assumptions are benchmarked against external data, e.g. , from Bloomberg Consensus, Oxford Economics and the International Monetary Fund World Economic Outlook ( IMF WEO ) . The hypothetical scenarios, in particular the upside and mild downside scenarios, were viewed less plausible. Given the considerable uncertainties associated with the economic conditions, an exceptional interim design of these scenarios was not deemed appropriate. Therefore, management concluded that the probability weights of the upside and the mild downside scenarios would be set to zero. The baseline scenario, which is aligned to the economic and market assumptions used for UBS ’s business planning pur poses, and the severe downside scenario, which is the Group’s binding stress scenario, were updated throughout 2020 using the most recent available macroeconomic and market information. The baseline scenario updates during the first half of 2020 assumed a deterioration of GDP in relevant markets, especially in the US and in Switzerland, increasing unemployment, including a sharp increase in the US to previously unseen levels, lower equity prices and higher market volatility. House prices were assumed to be largely flat in Switzerland over 2020 but to decrease in the US. Overall, only modest economic improvements were expected from the second half of 2020. The severe downside assumptions were considered to be consistent with assumptions for COVID-19 - related disruption but to a significantly more adverse degree than what was considered under the baseline scenario, with a full year contraction expected to continue into 2021 and only a moderate recovery starting from the end of 2021. Improvements in macroeconom ic forward-looking assumptions started from the third quarter 2020 , with the fourth quarter 2020 in particular including more optimistic assumptions for the baseline , with increased GDP growth forecasts and lower unemployment levels in the US and in Switzerland in particular, given improvements in economic activity as well as greater optimism regarding the availability and effective distribution of vaccines and continued government support. In addition, the assumptions for the severe downside scenario were made less pessimistic in the second half of 2020. The table on the following page details the key assumptions for the baseline and severe downside scenarios applied as of 31 December 2020 . The outlook of the one -year and three -year cumulative GDP growth ra tes in the baseline are significantly higher than those seen at the end of 2019 , as the economy is expected to recover from the sharp contractions seen in mid-2020. However, GDP levels are expected to remain below 31 December 2019 levels until 2022 in the US and Switzerland , and until 2023 in the Eurozone. The GDP growth rates in the severe downside scenario are also higher , to reflect the recovery from the weaker starting levels. Under the b aseline scenario , US unemployment is expected to decline to 5.5% b y the end of the first year and to 4.5% by the end of the third year. Unemployment rates in the Eurozone and Switzerland are expected to rise modestly in the first year in the baseline scenario but to recover by the end of the third year. The severe downsi de scenario includes marked increases in unemployment . Scenario weights and post-model adjustments As a consequence of the exceptional circumstances and prevailing uncertainties during 2020 and as at 31 December 2020, the weight allocations shifted significantly since 2019, with the baseline scenario weighted at 70% and the severe downside scenario at 3 0% through the end of the third quarter of 2020, to best reflect management’s sentiment regarding the boundaries of economic outcomes. During the fourth quarter of 2020, changes in the macro-economic environment generally included more optimistic forward-looking assumptions as stated above. However, developments as at 31 December 2020, including an increase in infection and hospitalization rates, as well as strict lockdowns in many jurisdictions, led to a continued high level of uncertainty in relation to t he effects of the pandemic and its impact on the global economy. These developments gave rise to questions around whether the assumptions will play out as forecasted. As a consequence, in the fourth quarter 2020 , management decrease d the weight placed on t he baseline scenario from 70% to 60% and increase d the weight placed on the severe downside scenario from 30% to 40% , and applied additionally a post - model adjustment of USD 117 million to offset the stage 1 and 2 ECL releases which would have otherwise arisen from the scenario update effects. ECL scenario Assigned weights in % 31.12. 20 31.12.1 9 Upside 0.0 7.5 UBS b aseline 60.0 42.5 Mild downside 0.0 35.0 Severe downside 40.0 15.0 Scenario assumptions One year Three years cumulative 31.12.20 Baseline Severe downside Baseline Severe downside Real GDP growth (% change) United States 2.7 (5.9) 9.1 (3.8) Eurozone 2.5 (8.7) 9.9 (10.3) Switzerland 3.3 (6.6) 9.0 (5.7) Consumer price index (% change) United States 1.7 (1.2) 5.5 0.4 Eurozone 1.4 (1.3) 3.9 (1.7) Switzerland 0.3 (1.8) 0.9 (1.6) Unemployment rate (end-of-period level, %) 1 United States 5.5 12.1 4.5 9.9 Eurozone 9.5 14.1 8.0 16.4 Switzerland 3.8 6.1 3.2 6.8 Fixed income: 10-year government bonds (change in yields, basis points) USD 22.0 (50.0) 46.0 (15.0) EUR 4.0 (35.0) 21.0 (25.0) CHF 13.0 (70.0) 31.0 (35.0) Equity indices (% change) S&P 500 (2.9) (50.2) (1.7) (40.1) EuroStoxx 50 3.8 (57.6) 13.5 (50.4) SPI (0.8) (53.6) 5.8 (44.2) Swiss real estate (% change) Single-Family Homes 3.4 (17.0) 7.1 (30.0) Other real estate (% change) United States (S&P / Case-Shiller) 2.5 (15.3) 9.2 (28.7) Eurozone (House Price Index) 1.1 (22.9) 7.2 (35.4) 1 2020 unemployment rate is presented as an end-of-period level. 2019 unemployment rate was presented as a change in levels. The 2020 change in level would have been: One year shock in the baseline scenario: United States: -3.5%, Eurozone: 0.4% and Switzerland: 0.4% and for the global crisis scenario: United States: 3.1%, Eurozone: 5.0% and Switzerland: 2.6%. Three year shock in the baseline scenario: United States: -4.5%, Eurozone: -1.2% and Switzerland: -0.2% and for the global crisis scenario: United States: 0.9%, Eurozone: 7.2% and Switzerland: 3.4% Scenario assumptions One year Three years cumulative 31.12.19 Baseline Severe downside Baseline Severe downside Real GDP growth (% change) United States 1.9 (6.4) 6.4 (4.3) Eurozone 1.0 (9.1) 2.8 (10.8) Switzerland 1.5 (7.0) 4.8 (6.2) Consumer price index (% change) United States 1.8 (1.2) 6.2 0.4 Eurozone 1.3 (1.3) 4.3 (1.7) Switzerland 0.8 (1.8) 2.7 (1.6) Unemployment rate (change, percentage points) United States (0.4) 5.7 (0.5) 5.6 Eurozone (0.1) 5.6 (0.2) 7.9 Switzerland 0.1 2.6 0.3 3.6 Fixed income: 10-year government bonds (change in yields, basis points) USD 0.2 (100.0) 10.1 (75.0) EUR 8.4 (30.0) 28.2 (20.0) CHF 9.5 (70.0) 30.0 (35.0) Equity indices (% change) S&P 500 3.5 (53.0) 9.5 (42.9) EuroStoxx 50 0.5 (60.0) 4.4 (52.9) SPI 1.4 (56.2) 5.3 (46.8) Swiss real estate (% change) Single-Family Homes 0.1 (15.2) 2.3 (27.0) Other real estate (% change) United States (S&P / Case-Shiller) 4.0 (13.3) 16.7 (23.4) Eurozone (House Price Index) 1.2 (23.0) 2.2 (33.2) c) Development of ECL allowances and provisions The ECL allowances and provisions recognize d in the period are impacted by a variety of factors, such as : – origination of new instruments during the period; – effect of passage of time as the ECLs on an instrument for the remaining lifetime decrease (all other factors remaining the same); – discount un wind within ECLs as it is measured on a present value basis; – derecognition of instruments in the period; – change in individual asset quality of instruments; – effect of updating forward-looking scenarios and the respective weights; – movements from a maximum 12-month ECL to the recognition of lifetime ECLs (and vice vers a) following transfers between stages 1 and 2 ; – movements from stages 1 and 2 to stage 3 (credit-impaired status) when default has become certain and probability of default (PD) increases to 100% (or vice versa); – changes in models or updates to model parameters; and – foreign exchange translations for assets denominated in foreign currencies a nd other movements. The following table explains the changes in the ECL allowances and provisions for on- and off-balance sheet financial instruments and other credit lines in scope of ECL requirements between the beginning and the end of the period due to the factors listed on the previous page. Development of ECL allowances and provisions USD million Total Stage 1 Stage 2 Stage 3 Balance as of 31 December 2019 (1,029) (181) (160) (688) Net movement from new and derecognized transactions 1 (28) (90) 17 46 of which: Private clients with mortgages (2) (3) 2 0 of which: Real estate financing (3) (5) 2 0 of which: Large corporate clients (32) (29) (4) 0 of which: SME clients (16) (14) (3) 0 of which: Other 26 (39) 20 46 of which: Securities financing transactions REIT 32 (1) 15 17 of which: Loans to financial advisors 9 (1) 9 0 of which: Lombard loans 23 (6) 0 29 of which Financial intermediaries (20) (15) (5) 0 Remeasurements with stage transfers 2 (427) 45 (134) (338) of which: Private clients with mortgages (19) (2) (17) 0 of which: Real estate financing (6) 3 (9) 0 of which: Large corporate clients (224) 34 (83) (175) of which: SME clients (43) (1) (11) (31) of which: Other (134) 11 (14) (131) of which: Securities financing transactions REIT (36) 0 (18) (19) of which: Loans to financial advisors (12) 7 (7) (11) of which: Lombard loans (36) 0 0 (36) of which Commodity Trade Finance (59) 0 0 (59) Remeasurements without stage transfers 3 (271) (88) (47) (136) of which: Private clients with mortgages (34) (19) (8) (7) of which: Real estate financing (14) (4) (11) 1 of which: Large corporate clients (149) (53) (17) (79) of which: SME clients (13) 0 (7) (6) of which: Other (60) (11) (4) (44) of which: Loans to financial advisors (18) (12) (3) (3) of which: Lombard loans (3) 6 0 (9) of which: Credit cards (12) 0 0 (12) Model changes 4 32 21 11 0 Total ECL allowance movements with profit or loss impact 5 (694) (112) (154) (429) Write-offs, FX and other movements (without profit or loss impact) 6 254 (14) (19) 287 Balance as of 31 December 2020 (1,468) (306) (333) (829) 1 Represents the increase and decrease in allowances and provisions resulting from financial instruments (including guarantees and facilities) that were newly originated, purchased or renewed and from the final derecognition of loans or facilities on their maturity date or earlier. 2 Represents the remeasurement between 12-month and lifetime ECL due to stage transfers. 3 Represents the change in allowances and provisions related to changes in model inputs or assumptions, including changes in forward-looking macroeconomic conditions, changes in the exposure profile, PD and LGD changes, and unwinding of the time value. 4 Represents the change in the allowances and provisions related to changes in models and methodologies. 5 Includes ECL movements from new and derecognized transactions, remeasurement changes, model and methodology changes. 6 Represents the decrease in allowances and provisions resulting from write-offs of the ECL allowance against the gross carrying amount when all or part of a financial asset is deemed uncollectible or forgiven and movements in foreign exchange rates. In 2020, ECL allowances and provisions increased by U SD 694 million from net credit loss expenses impacting profit or loss: – a USD 28 million net increase from new and derecognized transactions that resulted from a USD 90 million stage 1 increase primarily in Large corporate clients and SME clients , offset by a USD 63 million net release from stage 2 and 3 transactions , driven by transactions that were terminated before their contractual maturity, mainly in Lombard lending and Securities financing transactions Real e state i nvestment trusts ( SFT- REITs ) ; – a USD 697 milli o n net increase from book quality movements that resulted from a USD 427 million net increase from transactions moving from stage s 1 and 2 into stage s 2 and 3 , respectively, of which approximately half relate d to Large corporate clients , with further substantial effects from Commodity trade finance , SME clients, SFT REITs and Lombard loans , and USD 271 million from remeasurements without stage transfers, approximately half relating to Large corporate clients , and another significant portion relating to real estate related lending, primarily due to the updates of macroeconomic factor s ; – a USD 32 million net decrease that resulted from a number of model revisions , primarily impacting Financial intermediaries , Real estate financing and SME clients , from updates to the PD and LGD risk drivers and macroeconomic dependencies . In addition to the movements impacting profit or loss, allowances decreased by USD 346 million as a result of a number of write offs . A further USD 75 million allowance increa se resulted from foreign exchange movements, almost entirely due to the Swiss franc strengthening against the US dollar. The following table explains th e changes in the ECL allowances and provisions for on- and off-balance sheet financial instruments and other credit lines in scope of ECL requirements between the beginning and the end of the prior period due to the factors listed earlier in this note. USD million Total Stage 1 Stage 2 Stage 3 Balance as of 31 December 2018 (1,054) (176) (183) (695) Net movement from new and derecognized transactions 1 (53) (66) 10 3 of which: Private clients with mortgages (1) (4) 3 0 of which: Real estate financing (3) (5) 2 0 of which: Large corporate clients (6) (14) 8 0 of which: SME clients (16) (14) (2) 0 Remeasurements with stage transfers 2 (125) 14 (35) (105) of which: Private clients with mortgages (5) 1 (5) (1) of which: Real estate financing 5 4 1 0 of which: Large corporate clients (45) 4 (11) (38) of which: SME clients (64) 2 (11) (55) Remeasurements without stage transfers 3 73 31 41 1 of which: Private clients with mortgages 22 2 30 (9) of which: Real estate financing 1 0 0 1 of which: Large corporate clients (24) (10) 0 (14) of which: SME clients 35 9 10 17 Model changes 4 26 17 9 0 Total ECL allowance movements with profit or loss impact 5 (78) (4) 25 (100) Write-offs, FX and other movements (without profit or loss impact) 6 105 (1) (2) 108 Balance as of 31 December 2019 (1,029) (181) (160) (688) 1 Represents the increase and decrease in allowances and provisions resulting from financial instruments (including guarantees and facilities) that were newly originated, purchased or renewed and from the final derecognition of loans or facilities on their maturity date or earlier. 2 Represents the remeasurement between 12-month and lifetime ECL due to stage transfers. 3 Represents the change in allowances and provisions related to changes in model inputs or assumptions, including changes in forward-looking macroeconomic conditions, changes in the exposure profile, PD and LGD changes, and unwinding of the time value. 4 Represents the change in the allowances and provisions related to changes in models and methodologies. 5 To align to the table format for the 2020 ECL allowance and provision movement, UBS has adjusted the 2019 table format. Includes ECL movements from new and derecognized transactions, remeasurement changes, model and methodology changes. 6 Represents the decrease in allowances and provisions resulting from write-offs of the ECL allowance against the gross carrying amount when all or part of a financial asset is deemed uncollectible or forgiven and movements in foreign exchange rates. As explained in Note 1a, the assessment of an SICR considers a number of qualitative and quantitative factors to determine whether a stage transfer between stage 1 and stage 2 is required. The primary assessment considers changes in probability of default (PD) based on rating analyses and economic outlook. Additionally, UBS considers counterparties that have moved to a credit watch list and those with payments that are at least 30 days past due. Stage 2 classification by trigger ECL allowances / provisions as of 31 December 2020 USD million Stage 2 of which: PD layer of which: watch list of which: ≥30 days past due On-and off-balance sheet (333) (252) (41) (40) of which: Private clients with mortgages (93) (83) 0 (11) of which: Real estate financing (53) (45) (2) (6) of which: Large corporate clients (110) (89) (20) 0 of which: SME clients (38) (16) (16) (5) of which: Financial intermediaries and hedge funds (19) (19) 0 0 of which: Loans to financial advisors (5) 0 (1) (4) of which: Credit cards (14) 0 0 (14) of which: Other (2) 0 (2) 0 d) Maximum exposure to credit risk The tables below and on the following page provide the Group’s maximum exposure to credit risk for financial instruments subject to ECL requirements and the respective collateral and other credit enhancements mitigating credit risk for these classes of financial instruments. The maximum exposure to credit risk includes the carrying amounts of financial instruments recognized on the balance sheet subject to credit risk and the notional amounts for off-balance sheet arrangements. Where information is available, collateral is pre sented at fair value. For other collateral, such as real estate, a reasonable alternative value is used. Credit enhancements, such as credit derivative contracts and guarantees, are included at their notional amounts. Both are capped at the maximum exposur e to credit risk for which they serve as security. The “Risk management and control” section of this report describes management’s view of credit risk and the related exposures, which can differ in certain respects from the requirements of IFRS. Maximum exposure to credit risk 31.12.20 Collateral 1 Credit enhancements 1 Exposure to credit risk after collateral and credit enhancements USD billion Maximum exposure to credit risk Cash collateral received Collateralized by securities Secured by real estate Other collateral 2 Netting Credit derivative contracts Guarantees Financial assets measured at amortized cost on the balance sheet Cash and balances at central banks 158.2 158.2 Loans and advances to banks 3 15.4 0.1 15.3 Receivables from securities financing transactions 74.2 0.0 67.1 7.0 0.0 Cash collateral receivables on derivative instruments 4,5 32.7 21.1 11.6 Loans and advances to customers 6 379.5 25.8 118.2 194.6 21.7 4.4 14.8 Other financial assets measured at amortized cost 27.2 0.1 0.2 1.3 25.5 Total financial assets measured at amortized cost 687.3 26.0 185.7 194.6 30.1 21.1 0.0 4.4 225.5 Financial assets measured at fair value through other comprehensive income – debt 8.3 8.3 Total maximum exposure to credit risk reflected on the balance sheet in scope of ECL 695.6 26.0 185.7 194.6 30.1 21.1 0.0 4.4 233.7 Guarantees 7 17.0 0.7 5.0 0.2 1.7 2.5 7.0 Loan commitments 7 41.2 0.0 4.2 2.1 6.8 0.4 2.4 25.3 Forward starting transactions, reverse repurchase and securities borrowing agreements 3.2 3.2 0.0 Committed unconditionally revocable credit lines 40.1 0.1 10.3 6.2 2.7 0.0 20.7 Total maximum exposure to credit risk not reflected on the balance sheet, in scope of ECL 101.6 0.8 22.7 8.5 11.2 0.0 0.4 4.9 53.0 31.12.19 Collateral 1 Credit enhancements 1 Exposure to credit risk after collateral and credit enhancements USD billion Maximum exposure to credit risk Cash collateral received Collateralized by securities Secured by real estate Other collateral 2 Netting Credit derivative contracts Guarantees Financial assets measured at amortized cost on the balance sheet Cash and balances at central banks 107.1 107.1 Loans and advances to banks 3 12.4 0.0 12.4 Receivables from securities financing transactions 84.2 77.6 5.8 0.8 Cash collateral receivables on derivative instruments 4,5 23.3 14.4 8.9 Loans and advances to customers 6 326.8 18.4 101.4 174.7 17.1 1.1 14.0 Other financial assets measured at amortized cost 23.0 0.1 0.4 0.0 1.3 21.1 Total financial assets measured at amortized cost 576.8 18.6 179.4 174.7 24.3 14.4 0.0 1.1 164.4 Financial assets measured at fair value through other comprehensive income – debt 6.3 6.3 Total maximum exposure to credit risk reflected on the balance sheet in scope of ECL 583.2 18.6 179.4 174.7 24.3 14.4 0.0 1.1 170.7 Guarantees 7 18.1 1.0 3.0 0.1 1.7 2.5 9.8 Loan commitments 7 27.5 0.2 1.9 1.3 5.8 0.2 0.2 18.0 Forward starting transactions, reverse repurchase and securities borrowing agreements 1.7 1.7 0.0 Committed unconditionally revocable credit lines 35.1 0.3 8.3 4.9 3.6 0.0 17.9 Total maximum exposure to credit risk not reflected on the balance sheet, in scope of ECL 82.3 1.5 14.9 6.3 11.0 0.0 0.2 2.8 45.7 1 Of which: USD 1,983 million for 31 December 2020 (31 December 2019: USD 1,720 million) relates to total credit-impaired financial assets measured at amortized cost and USD 154 million for 31 December 2020 (31 December 2019: USD 27 million) to total off-balance sheet financial instruments and other credit lines for credit-impaired positions. 2 Includes but is not limited to life insurance contracts, inventory, mortgage loans, gold and other commodities. 3 Loans and advances to banks include amounts held with third-party banks on behalf of clients. The credit risk associated with these balances may be borne by those clients. 4 Included within Cash collateral receivables on derivative instruments are margin balances due from exchanges or clearing houses. Some of these margin balances reflect amounts transferred on behalf of clients who retain the associated credit risk. 5 The amount shown in the “Netting” column represents the netting potential not recognized on the balance sheet. Refer to Note 22 for more information. 6 Collateral arrangements generally incorporate a range of collateral, including cash, securities, property and other collateral. 7 The amount shown in the “Guarantees” column includes sub-participations. e) Financial assets subject to cr edit risk by rating category The table below shows the credit quality and the maximum exposure to credit risk based on the Group ’s internal credit rating system and year-end stage classification. Under IFRS 9, the credit risk ratin g reflects the Group ’ s assessment of the probability of default of individual counterparties, prior to substitutions. The amounts presented are gross of impairment allowances. › Refer to the “ Risk management and control ” section of this report for more detail s regarding the Group’ s internal grading system Financial assets subject to credit risk by rating category USD million 31.12.20 Rating category 1 0–1 2–3 4–5 6–8 9–13 Credit-impaired (defaulted) Total gross carrying amount ECL allowances Net carrying amount (maximum exposure to credit risk) Financial assets measured at amortized cost Cash and balances at central banks 156,250 1,981 0 0 0 0 158,231 0 158,231 of which: stage 1 156,250 1,981 0 0 0 0 158,231 0 158,231 Loans and advances to banks 543 12,129 1,344 1,182 260 1 15,460 (16) 15,444 of which: stage 1 543 12,074 1,277 1,145 231 0 15,269 (9) 15,260 of which: stage 2 0 55 67 37 29 0 189 (5) 184 of which: stage 3 0 0 0 0 0 1 1 (1) 0 Receivables from securities financing transactions 22,998 16,009 15,367 17,995 1,842 0 74,212 (2) 74,210 of which: stage 1 22,998 16,009 15,367 17,995 1,842 0 74,212 (2) 74,210 Cash collateral receivables on derivative instruments 8,196 13,477 7,733 3,243 88 0 32,737 0 32,737 of which: stage 1 8,196 13,477 7,733 3,243 88 0 32,737 0 32,737 Loans and advances to customers 5,813 214,307 67,270 69,217 21,038 2,943 380,589 (1,060) 379,528 of which: stage 1 5,813 212,970 63,000 59,447 15,860 0 357,090 (142) 356,948 of which: stage 2 0 1,338 4,269 9,770 5,178 0 20,556 (215) 20,341 of which: stage 3 0 0 0 0 0 2,943 2,943 (703) 2,240 Other financial assets measured at amortized cost 15,404 4,018 280 6,585 481 560 27,327 (133) 27,194 of which: stage 1 15,404 4,015 269 6,334 389 0 26,410 (34) 26,377 of which: stage 2 0 3 11 251 91 0 357 (9) 348 of which: stage 3 0 0 0 0 0 560 560 (90) 469 Total financial assets measured at amortized cost 209,204 261,922 91,993 98,223 23,709 3,505 688,556 (1,211) 687,345 On-balance sheet financial instruments Financial assets measured at FVOCI – debt instruments 3,212 5,014 0 32 0 0 8,258 0 8,258 Total on-balance sheet financial instruments 212,417 266,936 91,993 98,255 23,709 3,505 696,815 (1,211) 695,603 Off-balance sheet positions subject to expected credit loss by rating category USD million 31.12.20 Rating category 1 0–1 2–3 4–5 6–8 9–13 Credit-impaired (defaulted) Total off - balance sheet exposure (maximum exposure to credit risk) ECL provisions Off-balance sheet financial instruments Guarantees 3,482 4,623 3,522 4,293 991 170 17,081 (63) of which: stage 1 3,482 4,219 2,688 3,558 739 0 14,687 (14) of which: stage 2 0 404 834 736 252 0 2,225 (15) of which: stage 3 0 0 0 0 0 170 170 (34) Irrevocable loan commitments 3,018 14,516 8,583 9,302 5,850 104 41,372 (142) of which: stage 1 3,018 13,589 6,873 8,739 4,676 0 36,894 (74) of which: stage 2 0 927 1,711 563 1,174 0 4,374 (68) of which: stage 3 0 0 0 0 0 104 104 0 Forward starting reverse repurchase and securities borrowing agreements 82 150 0 3,015 0 0 3,247 0 Total off-balance sheet financial instruments 6,583 19,289 12,105 16,610 6,840 273 61,700 (205) Other credit lines Committed unconditionally revocable credit lines 574 13,505 5,958 8,488 11,501 108 40,134 (50) of which: stage 1 574 12,940 4,517 6,609 10,593 0 35,233 (29) of which: stage 2 0 565 1,441 1,879 908 0 4,792 (21) of which: stage 3 0 0 0 0 0 108 108 0 Irrevocable committed prolongation of existing loans 14 1,349 931 632 357 0 3,282 (2) of which: stage 1 14 1,349 930 630 355 0 3,277 (2) of which: stage 2 0 1 1 2 1 0 5 0 of which: stage 3 0 0 0 0 0 0 0 0 Total other credit lines 588 14,854 6,889 9,119 11,858 109 43,416 (52) 1 Refer to the “Internal UBS rating scale and mapping of external ratings” table in the “Risk management and control” section of this report for more information on rating categories. Financial assets subject to credit risk by rating category USD million 31.12.19 Rating category 1 0–1 2–3 4–5 6–8 9–13 Credit-impaired (defaulted) Total gross carrying amount ECL allowances Net carrying amount (maximum exposure to credit risk) Financial assets measured at amortized cost Cash and balances at central banks 105,195 1,873 0 0 0 0 107,068 0 107,068 of which: stage 1 105,195 1,873 0 0 0 0 107,068 0 107,068 Loans and advances to banks 309 9,832 1,326 687 298 1 12,454 (6) 12,447 of which: stage 1 309 9,832 1,326 677 228 0 12,371 (4) 12,367 of which: stage 2 0 0 0 10 71 0 81 (1) 80 of which: stage 3 0 0 0 0 0 1 1 (1) 0 Receivables from securities financing transactions 21,089 16,889 14,366 28,815 3,088 0 84,246 (2) 84,245 of which: stage 1 21,089 16,889 14,366 28,815 3,088 0 84,246 (2) 84,245 Cash collateral receivables on derivative instruments 4,899 10,553 5,033 2,765 39 0 23,289 0 23,289 of which: stage 1 4,899 10,553 5,033 2,765 39 0 23,289 0 23,289 Loans and advances to c
UBS AG
Disclosure Of Provision Matrix [Line Items]
Disclosure Of Financial Assets Explanatory	Additional information Note 20 Expected credit loss measurement a) Expected credit losses in the period Total net credit loss expenses were USD 695 million in 2020, reflecting net credit loss expenses of USD 266 million related to stage 1 and 2 positions and USD 429 million net credit loss expenses related to credit-impaired (stage 3) positions. Stage 1 and 2 net credit loss expenses of USD 266 million were primarily driven by a net expense of USD 200 million from updating the forward-looking scenarios and their associated weightings, factoring in updated macroeconomic assumptions to reflect the effects of the COVID-19 pandemic, with appr oximately half from the baseline scenario and half from the severe downside scenario. The main drivers included updated GDP and unemployment assumptions in Switzerland and the US, primarily impacting Large corporate clients and, to a lesser extent, Private clients with mortgages , Real estate financing and S ME clients . These scenario updates impacted remeasurements for stage 1 and 2 positions without stage transfers and triggered exposure movements between stages, primarily from stage 1 to stage 2 as probabilities of default increased . In addition to the scenario related effects, stage 1 and 2 expenses of USD 73 million arose from new transactions, net of releases from derecognized transactions, primarily from Large corporate clients and SME clients . A further USD 32 million stage 1 and 2 net release of expenses resulted from a number of model updates, primarily impacting Financial intermediaries , Real estate financing and SME clients . The remaining stage 1 and 2 expenses of USD 24 million mainly refle ct the effects of post-model adjustments for selected exposures to Swiss SME clients , as well as remeasurements within the loan book, mainly in the Investment Bank. The changes in the macroeconomic environment in the second half of 2020 generally included more optimistic forward-looking assumptions for both the baseline and severe downside scenarios compared with those applied in the first half of the year . Management applied a post-model expense adjustment of USD 117 million to offset the stage 1 and 2 re leases that would have otherwise arisen, deeming them to be premature given the high degree of prevailing uncertainties and the wide range of reasonabl e possible outcomes . › Refer to Note 20 b for more information Stage 3 net expenses of USD 429 million wer e recognized across a number of defaulted positions. In the Investment Bank, stage 3 net expenses of USD 217 million were recognized, of which USD 81 million related to an exposure to a client in the travel sector. In Personal & Corporate Banking, stage 3 net expenses of USD 128 million were recognized, of which USD 59 million related to a case of fraud at a commodity trade finance counterparty, which affected a number of lenders, including UBS AG . In Global Wealth Management , stage 3 net expenses of USD 40 million were recognized, primarily across a small number of collateralized and securities-based lending positions. In Group Functions , stage 3 expenses of USD 42 million were recognized from one energy-related exposure in the Non-core and L egacy P ortfolio . Credit loss (expense) / release USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions Total For the year ended 31.12.20 Stages 1 and 2 (48) (129) 0 (88) 0 (266) Stage 3 (40) (128) (2) (217) (42) (429) Total credit loss (expense) / release (88) (257) (2) (305) (42) (695) For the year ended 31.12.19 Stages 1 and 2 3 23 0 (4) 0 22 Stage 3 (23) (44) 0 (26) (7) (100) Total credit loss (expense) / release (20) (21) 0 (30) (7) (78) For the year ended 31.12.18 Stages 1 and 2 0 0 0 (9) 0 (9) Stage 3 (15) (56) 0 (29) (8) (109) Total credit loss (expense) / release (15) (56) 0 (38) (8) (117) b) Changes to ECL models, scenarios, scenario weights and key inputs Refer to Note 1a for information about the principles governing ECL models, scenarios, scenario weights and key inputs applied. During 2020, management carefully considered guidance issued by supervisory authorities concerning the interpretation of key elements of IFRS 9, Financial instruments , in the context of COVID-19. Governance Comprehensive cross-functional and cross-divisio nal governance processes are in place and used to discuss and approve scenario updates and weights, to assess whether significant increases in credit risk resulted in stage transfer s , to review model outputs and to reach conclu sions regarding post - model ad justments. Model changes During 2020, the probability of default ( PD ) and loss given default ( LGD ) models applied to Financial i ntermediaries , Large corporate clients , Real estate financing and SME clients were revised to reflect updates to PD and LGD ris k drivers and macroeconomic dependencies. The model updates resulted in a USD 32 million decrease in ECL allowances, primarily in Personal & Corporate Banking across Financial intermediaries , Real estate financing and SME clients . Scenario and key input updates During 2020, the four scenarios and related macroeconomic factors that were applied at the end of 2019 were reviewed in light of the economic and political conditions and prevailing uncertainties through a series of governance meetings, with input from UBS AG risk and finance experts across the regions and business divisions. Scenario assumptions are benchmarked against external data, e.g. , from Bloomberg Consensus, Oxford Economics and the International Monetary Fund World Economic Outlook (IMF WEO). The hypothetical scenarios, in particular the upside and mild downside scenarios, were viewed less plausible. Given the considerable uncertainties associated with the economic conditions, an exceptional i nterim design of these scenarios was not deeme d appropriate. Therefore, management concluded that the probability weights of the upside and the mild downside scenarios w ould be set to zero. The baseline scenario, which is aligned to the economic and market assumptions used for UBS AG ’s business plann ing purposes, and the severe downside scenario, which is the Group’s binding stress scenario, were updated throughout 2020 using the most recent available macroeconomic and market information. The baseline scenario updates during the first half of 2020 as sumed a deterioration of GDP in relevant markets, especially in the US and in Switzerland, increasing unemployment, including a sharp increase in the US to previously unseen levels, lower equity prices and higher market volatility. House prices were assume d to be largely flat in Switzerland over 2020 but to decrease in the US. Overall, only modest economic improvements were expected from the second half of 2020. The severe downside assumptions were considered to be consistent with assumptions for COVID-19 - r elated disruption but to a significantly more adverse degree than what was considered under the baseline scenario, with a full year contraction expected to continue into 2021 and only a moderate recovery starting from the end of 2021. Improvements in macroeconomic forward-looking assumptions started from the third quarter 2020 , with the fourth quarter 2020 in particular including more optimistic assumptions for the baseline , with increased GDP growth forecasts and lower unemployment levels in the US and in Switzerland in particular, given improvements in economic activity as well as greater optimism regarding the availability and effective distribution of vaccines and continued government support. In addition, the assumptions for the severe downside scenari o were made less pessimistic in the second half of 2020. The table on the following page details the key assumptions for the baseline and severe downside scenarios applied as of 31 December 2020 . The outlook of the one -year and three -year cumulative GDP gr owth rates in the baseline are significantly higher than those seen at the end of 2019 , as the economy is expected to recover from the sharp contractions seen in mid-2020. However, GDP levels are expected to remain below 31 December 2019 levels until 2022 in the US and Switzerland , and until 2023 in the Eurozone. The GDP growth rates in the severe downside scenario are also higher , to reflect the recovery from the weaker starting levels. Under the b aseline scenario , US unemployment is expected to decline to 5.5% by the end of the first year and to 4.5% by the end of the third year. Unemployment rates in the Eurozone and Switzerland are expected to rise modestly in the first year in the baseline scenario but to recover by the end of the third year. The severe downside scenario includes marked increases in unemployment . Scenario weights and post-model adjustments As a consequence of the exceptional circumstances and prevailing uncertainties during 2020 and as at 31 December 2020, the weight allocations shifted significantly since 2019, with the baseline scenario weighted at 70% and the severe downside scenario at 3 0% through the end of the third quarter of 2020, to best reflect management’s sentiment regarding the boundaries of economic outcomes. During the fourth quarter of 2020, changes in the macro-economic environment generally included more optimistic forward-looking assumptions as stated above. However, developments as at 31 December 2020, including an increase in infection and hospitalization rates, as well as strict lockdowns in many jurisdictions, led to a continued high level of uncertainty in relation to t he effects of the pandemic and its impact on the global economy. These developments gave rise to questions around whether the assumptions will play out as forecasted. As a consequence, in the fourth quarter 2020 , management decrease d the weight placed on t he baseline scenario from 70% to 60% and increase d the weight placed on the severe downside scenario from 30% to 40% , and applied additionally a post - model adjustment of USD 117 million to offset the stage 1 and 2 ECL releases which would have otherwise arisen from the scenario update effects . ECL scenario Assigned weights in % 31.12. 20 31.12.1 9 Upside 0.0 7.5 UBS AG b aseline 60.0 42.5 Mild downside 0.0 35.0 Severe downside 40.0 15.0 Scenario assumptions One year Three years cumulative 31.12.20 Baseline Severe downside Baseline Severe downside Real GDP growth (% change) United States 2.7 (5.9) 9.1 (3.8) Eurozone 2.5 (8.7) 9.9 (10.3) Switzerland 3.3 (6.6) 9.0 (5.7) Consumer price index (% change) United States 1.7 (1.2) 5.5 0.4 Eurozone 1.4 (1.3) 3.9 (1.7) Switzerland 0.3 (1.8) 0.9 (1.6) Unemployment rate (end-of-period level, %) 1 United States 5.5 12.1 4.5 9.9 Eurozone 9.5 14.1 8.0 16.4 Switzerland 3.8 6.1 3.2 6.8 Fixed income: 10-year government bonds (change in yields, basis points) USD 22.0 (50.0) 46.0 (15.0) EUR 4.0 (35.0) 21.0 (25.0) CHF 13.0 (70.0) 31.0 (35.0) Equity indices (% change) S&P 500 (2.9) (50.2) (1.7) (40.1) EuroStoxx 50 3.8 (57.6) 13.5 (50.4) SPI (0.8) (53.6) 5.8 (44.2) Swiss real estate (% change) Single-Family Homes 3.4 (17.0) 7.1 (30.0) Other real estate (% change) United States (S&P / Case-Shiller) 2.5 (15.3) 9.2 (28.7) Eurozone (House Price Index) 1.1 (22.9) 7.2 (35.4) 1 2020 unemployment rate is presented as an end-of-period level. 2019 unemployment rate was presented as a change in levels. The 2020 change in level would have been: One year shock in the baseline scenario: United States: -3.5%, Eurozone: 0.4% and Switzerland: 0.4% and for the global crisis scenario: United States: 3.1%, Eurozone: 5.0% and Switzerland: 2.6%. Three year shock in the baseline scenario: United States: -4.5%, Eurozone: -1.2% and Switzerland: -0.2% and for the global crisis scenario: United States: 0.9%, Eurozone: 7.2% and Switzerland: 3.4% Scenario assumptions One year Three years cumulative 31.12.19 Baseline Severe downside Baseline Severe downside Real GDP growth (% change) United States 1.9 (6.4) 6.4 (4.3) Eurozone 1.0 (9.1) 2.8 (10.8) Switzerland 1.5 (7.0) 4.8 (6.2) Consumer price index (% change) United States 1.8 (1.2) 6.2 0.4 Eurozone 1.3 (1.3) 4.3 (1.7) Switzerland 0.8 (1.8) 2.7 (1.6) Unemployment rate (change, percentage points) United States (0.4) 5.7 (0.5) 5.6 Eurozone (0.1) 5.6 (0.2) 7.9 Switzerland 0.1 2.6 0.3 3.6 Fixed income: 10-year government bonds (change in yields, basis points) USD 0.2 (100.0) 10.1 (75.0) EUR 8.4 (30.0) 28.2 (20.0) CHF 9.5 (70.0) 30.0 (35.0) Equity indices (% change) S&P 500 3.5 (53.0) 9.5 (42.9) EuroStoxx 50 0.5 (60.0) 4.4 (52.9) SPI 1.4 (56.2) 5.3 (46.8) Swiss real estate (% change) Single-Family Homes 0.1 (15.2) 2.3 (27.0) Other real estate (% change) United States (S&P / Case-Shiller) 4.0 (13.3) 16.7 (23.4) Eurozone (House Price Index) 1.2 (23.0) 2.2 (33.2) c) Development of ECL allowances and provisions The ECL allowances and provisions recogni zed in the period are impacted by a variety of factors, such as : – origination of new instruments during the period; – effect of passage of time as the ECLs on an instrument for the remaining lifetime decrease (all other factors remaining the same); – discount unwind within ECLs as it is measured on a present value basis; – derecognition of instruments in the period; – change in individual asset quality of instruments; – effect of updating forward-looking scenarios and the respective weights; – movements from a maximum 12-month ECL to the recognition of lifetime ECLs (and vice vers a) following transfers between stages 1 and 2 ; – movements from stages 1 and 2 to stage 3 (credit-impaired status) when default has become certain and probability of default (PD) increases to 100% (or vice versa); – changes in models or updates to model parameters; and – foreign exchange translations for assets denominated in foreign currencies and other movements. The following table explains the changes in the ECL allowances and provisions for on- and off-balance sheet financial instruments and other credit lines in scope of ECL requirements between the beginning and the end of the period due to the factors listed on the previous page. Development of ECL allowances and provisions USD million Total Stage 1 Stage 2 Stage 3 Balance as of 31 December 2019 (1,029) (181) (160) (688) Net movement from new and derecognized transactions 1 (28) (90) 17 46 of which: Private clients with mortgages (2) (3) 2 0 of which: Real estate financing (3) (5) 2 0 of which: Large corporate clients (32) (29) (4) 0 of which: SME clients (16) (14) (3) 0 of which: Other 26 (39) 20 46 of which: Securities financing transactions REIT 32 (1) 15 17 of which: Loans to financial advisors 9 (1) 9 0 of which: Lombard loans 23 (6) 0 29 of which Financial intermediaries (20) (15) (5) 0 Remeasurements with stage transfers 2 (427) 45 (134) (338) of which: Private clients with mortgages (19) (2) (17) 0 of which: Real estate financing (6) 3 (9) 0 of which: Large corporate clients (224) 34 (83) (175) of which: SME clients (43) (1) (11) (31) of which: Other (134) 11 (14) (131) of which: Securities financing transactions REIT (36) 0 (18) (19) of which: Loans to financial advisors (12) 7 (7) (11) of which: Lombard loans (36) 0 0 (36) of which Commodity Trade Finance (59) 0 0 (59) Remeasurements without stage transfers 3 (271) (88) (47) (136) of which: Private clients with mortgages (34) (19) (8) (7) of which: Real estate financing (14) (4) (11) 1 of which: Large corporate clients (149) (53) (17) (79) of which: SME clients (13) 0 (7) (6) of which: Other (60) (11) (4) (44) of which: Loans to financial advisors (18) (12) (3) (3) of which: Lombard loans (3) 6 0 (9) of which: Credit cards (12) 0 0 (12) Model changes 4 32 21 11 0 Total ECL allowance movements with profit or loss impact 5 (694) (112) (154) (429) Write-offs, FX and other movements (without profit or loss impact) 6 254 (14) (19) 287 Balance as of 31 December 2020 (1,468) (306) (333) (829) 1 Represents the increase and decrease in allowances and provisions resulting from financial instruments (including guarantees and facilities) that were newly originated, purchased or renewed and from the final derecognition of loans or facilities on their maturity date or earlier. 2 Represents the remeasurement between 12-month and lifetime ECL due to stage transfers. 3 Represents the change in allowances and provisions related to changes in model inputs or assumptions, including changes in forward-looking macroeconomic conditions, changes in the exposure profile, PD and LGD changes, and unwinding of the time value. 4 Represents the change in the allowances and provisions related to changes in models and methodologies. 5 Includes ECL movements from new and derecognized transactions, remeasurement changes, model and methodology changes. 6 Represents the decrease in allowances and provisions resulting from write-offs of the ECL allowance against the gross carrying amount when all or part of a financial asset is deemed uncollectible or forgiven and movements in foreign exchange rates. In 2020, ECL allowances and provisions increased by USD 694 million from net credit loss expenses impacting profit or loss: – a USD 28 million net increase from new and derecognized transactions that resulted from a USD 90 million stage 1 increase primarily in Large corporate clients and SME clients , offset by a USD 63 million net release from stage 2 and 3 transactions , driven by transactions that were terminated before their contractual maturity, mainly in Lombard lending and S ecurities financing transactio ns Real estate investment trusts (SFT- REITs ) ; – a USD 697 milli o n net increase from book quality movements that resulted from a USD 427 million net increase from transactions moving from stage s 1 and 2 into stage s 2 and 3 , respectively, of which approximately half relate d to Large corporate clients , with further substantial effects from Commodity trade finance, SME clients , SFT REITs and Lombard loans , and USD 271 million from remeasurements without stage transfers, approxi mately half relating to Large corporate clients , and another significant portion relating to real estate related lending, primarily due to the update s of macroeconomic factor s ; – a USD 32 million net decrease that resulted from a number of model revisions , p rimarily impacting Financial intermediaries , Real estate financing and SME clients , from updates to the PD and LGD risk drivers and macroeconomic dependencies . In addition to the movements impacting profit or loss, allowances decreased by USD 346 million as a result of a number of write offs. A further USD 75 million allowance increase resulted from foreign exchange movements, almost entirely due to the Swiss franc strengthening against the US dollar. The following table explains the changes in the ECL allowances and provisions for on- and off-balance sheet financial instruments and other credit lines in scope of ECL requi rements between the beginning and the end of the prior period due to the factors listed earlier in this note. USD million Total Stage 1 Stage 2 Stage 3 Balance as of 31 December 2018 (1,054) (176) (183) (695) Net movement from new and derecognized transactions 1 (53) (66) 10 3 of which: Private clients with mortgages (1) (4) 3 0 of which: Real estate financing (3) (5) 2 0 of which: Large corporate clients (6) (14) 8 0 of which: SME clients (16) (14) (2) 0 Remeasurements with stage transfers 2 (125) 14 (35) (105) of which: Private clients with mortgages (5) 1 (5) (1) of which: Real estate financing 5 4 1 0 of which: Large corporate clients (45) 4 (11) (38) of which: SME clients (64) 2 (11) (55) Remeasurements without stage transfers 3 73 31 41 1 of which: Private clients with mortgages 22 2 30 (9) of which: Real estate financing 1 0 0 1 of which: Large corporate clients (24) (10) 0 (14) of which: SME clients 35 9 10 17 Model changes 4 26 17 9 0 Total ECL allowance movements with profit or loss impact 5 (78) (4) 25 (100) Write-offs, FX and other movements (without profit or loss impact) 6 105 (1) (2) 108 Balance as of 31 December 2019 (1,029) (181) (160) (688) 1 Represents the increase and decrease in allowances and provisions resulting from financial instruments (including guarantees and facilities) that were newly originated, purchased or renewed and from the final derecognition of loans or facilities on their maturity date or earlier. 2 Represents the remeasurement between 12-month and lifetime ECL due to stage transfers. 3 Represents the change in allowances and provisions related to changes in model inputs or assumptions, including changes in forward-looking macroeconomic conditions, changes in the exposure profile, PD and LGD changes, and unwinding of the time value. 4 Represents the change in the allowances and provisions related to changes in models and methodologies. 5 To align to the table format for the 2020 ECL allowance and provision movement, UBS has adjusted the 2019 table format. Includes ECL movements from new and derecognized transactions, remeasurement changes, model and methodology changes. 6 Represents the decrease in allowances and provisions resulting from write-offs of the ECL allowance against the gross carrying amount when all or part of a financial asset is deemed uncollectible or forgiven and movements in foreign exchange rates. As explained in Note 1a, the assessment of an SICR considers a number of qualitative and quantitative factors to determine whether a stage transfer between stage 1 and stage 2 is required. The primary assessment considers changes in probability of default (PD) based on rating analyses and economic outlook. Additionally, UBS AG considers counterparties that have moved to a credit watch list and those with payments that are at least 30 days past due. Stage 2 classification by trigger ECL allowances / provisions as of 31 December 2020 USD million Stage 2 of which: PD layer of which: watch list of which: ≥30 days past due On-and off-balance sheet (333) (252) (41) (40) of which: Private clients with mortgages (93) (83) 0 (11) of which: Real estate financing (53) (45) (2) (6) of which: Large corporate clients (110) (89) (20) 0 of which: SME clients (38) (16) (16) (5) of which: Financial intermediaries and hedge funds (19) (19) 0 0 of which: Loans to financial advisors (5) 0 (1) (4) of which: Credit cards (14) 0 0 (14) of which: Other (2) 0 (2) 0 d) Maximum exposure to credit risk The tables below and on the following page provide UBS AG’s maximum exposure to credit risk for financial instruments subject to ECL requirements and the respective collateral and other credit enhancements mitigating credit ri sk for these classes of financial instruments. The maximum exposure to credit risk includes the carrying amounts of financial instruments recognized on the balance sheet subject to credit risk and the notional amounts for off-balance sheet arrangements. W here information is available, collateral is presented at fair value. For other collateral, such as real estate, a reasonable alternative value is used. Credit enhancements, such as credit derivative contracts and guarantees, are included at their notional amounts. Both are capped at the maximum exposure to credit risk for which they serve as security. The “Risk management and control” section of this report describes management’s view of credit risk and the related exposures, which can differ in certain re spects from the requirements of IFRS. Maximum exposure to credit risk 31.12.20 Collateral 1 Credit enhancements 1 Exposure to credit risk after collateral and credit enhancements USD billion Maximum exposure to credit risk Cash collateral received Collateralized by securities Secured by real estate Other collateral 2 Netting Credit derivative contracts Guarantees Financial assets measured at amortized cost on the balance sheet Cash and balances at central banks 158.2 158.2 Loans and advances to banks 3 15.3 0.1 15.2 Receivables from securities financing transactions 74.2 0.0 67.1 7.0 0.0 Cash collateral receivables on derivative instruments 4, 5 32.7 21.1 11.6 Loans and advances to customers 6 381.0 27.0 118.2 194.6 21.7 0.0 4.4 15.1 Other financial assets measured at amortized cost 27.2 0.1 0.2 0.0 1.3 25.5 Total financial assets measured at amortized cost 688.7 27.2 185.7 194.6 30.1 21.1 0.0 4.4 225.6 Financial assets measured at fair value through other comprehensive income – debt 8.3 8.3 Total maximum exposure to credit risk reflected on the balance sheet in scope of ECL 697.0 27.2 185.7 194.6 30.1 21.1 0.0 4.4 233.9 Guarantees 7 17.0 0.7 5.0 0.2 1.7 2.5 7.0 Loan commitments 7 41.2 0.0 4.2 2.1 6.8 0.4 2.4 25.3 Forward starting transactions, reverse repurchase and securities borrowing agreements 3.2 3.2 0.0 Committed unconditionally revocable credit lines 42.0 0.1 10.3 6.2 2.7 0.0 22.7 Total maximum exposure to credit risk not reflected on the balance sheet, in scope of ECL 103.5 0.8 22.7 8.5 11.2 0.0 0.4 4.9 54.9 31.12.19 Collateral 1 Credit enhancements 1 Exposure to credit risk after collateral and credit enhancements USD billion Maximum exposure to credit risk Cash collateral received Collateralized by securities Secured by real estate Other collateral 2 Netting Credit derivative contracts Guarantees Financial assets measured at amortized cost on the balance sheet Cash and balances at central banks 107.1 107.1 Loans and advances to banks 3 12.4 0.0 12.3 Receivables from securities financing transactions 84.2 77.6 5.8 0.8 Cash collateral receivables on derivative instruments 4, 5 23.3 14.4 8.9 Loans and advances to customers 6 328.0 19.4 101.4 174.7 17.1 1.1 14.3 Other financial assets measured at amortized cost 23.0 0.1 0.4 0.0 1.3 21.2 Total financial assets measured at amortized cost 578.0 19.5 179.4 174.7 24.3 14.4 0.0 1.1 164.6 Financial assets measured at fair value through other comprehensive income – debt 6.3 6.3 Total maximum exposure to credit risk reflected on the balance sheet in scope of ECL 584.3 19.5 179.4 174.7 24.3 14.4 0.0 1.1 171.0 Guarantees 7 18.1 1.0 3.0 0.1 1.7 2.5 9.8 Loan commitments 7 27.5 0.2 1.9 1.3 5.8 0.2 0.2 18.0 Forward starting transactions, reverse repurchase and securities borrowing agreements 1.7 1.7 0.0 Committed unconditionally revocable credit lines 36.9 0.3 8.3 4.9 3.6 0.0 19.8 Total maximum exposure to credit risk not reflected on the balance sheet, in scope of ECL 84.2 1.5 14.9 6.3 11.0 0.0 0.2 2.8 47.6 1 Of which: USD 1,983 million for 31 December 2020 (31 December 2019: USD 1,720 million) relates to total credit-impaired financial assets measured at amortized cost and USD 154 million for 31 December 2020 (31 December 2019: USD 27 million) to total off-balance sheet financial instruments and other credit lines for credit-impaired positions. 2 Includes but is not limited to life insurance contracts, inventory, mortgage loans, gold and other commodities. 3 Loans and advances to banks include amounts held with third-party banks on behalf of clients. The credit risk associated with these balances may be borne by those clients. 4 Included within Cash collateral receivables on derivative instruments are margin balances due from exchanges or clearing houses. Some of these margin balances reflect amounts transferred on behalf of clients who retain the associated credit risk. 5 The amount shown in the “Netting” column represents the netting potential not recognized on the balance sheet. Refer to Note 22 for more information. 6 Collateral arrangements generally incorporate a range of collateral, including cash, securities, property and other collateral. 7 The amount shown in the “Guarantees” column includes sub-participations. e) Financial assets subject to credit risk by rating category The table below shows the credit quality and the maximum exposure to credit risk based on the Group ’s internal credit rating system and year-end stage clas sification. Under IFRS 9, the credit risk rating reflects the Group ’ s assessment of the probability of default of individual counterparties, prior to substitutions. The amounts presented are gross of impairment allowances. › Refer to the “ Risk management an d control ” section of this report for more detail s regarding the Group’ s internal grading system Financial assets subject to credit risk by rating category USD million 31.12.20 Rating category 1 0–1 2–3 4–5 6–8 9–13 Credit-impaired (defaulted) Total gross carrying amount ECL allowances Net carrying amount (maximum exposure to credit risk) Financial assets measured at amortized cost Cash and balances at central banks 156,250 1,981 0 0 0 0 158,231 0 158,231 of which: stage 1 156,250 1,981 0 0 0 0 158,231 0 158,231 Loans and advances to banks 543 12,029 1,344 1,182 260 1 15,360 (16) 15,344 of which: stage 1 543 11,974 1,277 1,145 231 0 15,170 (9) 15,160 of which: stage 2 0 55 67 37 29 0 189 (5) 184 of which: stage 3 0 0 0 0 0 1 1 (1) 0 Receivables from securities financing transactions 22,998 16,009 15,367 17,995 1,842 0 74,212 (2) 74,210 of which: stage 1 22,998 16,009 15,367 17,995 1,842 0 74,212 (2) 74,210 Cash collateral receivables on derivative instruments 8,196 13,477 7,733 3,243 88 0 32,737 0 32,737 of which: stage 1 8,196 13,477 7,733 3,243 88 0 32,737 0 32,737 Loans and advances to customers 5,813 215,755 67,270 69,217 21,038 2,943 382,036 (1,060) 380,977 of which: stage 1 5,813 214,418 63,000 59,447 15,860 0 358,538 (142) 358,396 of which: stage 2 0 1,338 4,269 9,770 5,178 0 20,556 (215) 20,341 of which: stage 3 0 0 0 0 0 2,943 2,943 (703) 2,240 Other financial assets measured at amortized cost 15,404 4,043 280 6,585 481 560 27,352 (133) 27,219 of which: stage 1 15,404 4,040 269 6,334 389 0 26,435 (34) 26,401 of which: stage 2 0 3 11 251 91 0 357 (9) 348 of which: stage 3 0 0 0 0 0 560 560 (90) 469 Total financial assets measured at amortized cost 209,204 263,295 91,993 98,223 23,709 3,505 689,929 (1,211) 688,717 On-balance sheet financial instruments Financial assets measured at FVOCI – debt instruments 3,212 5,014 0 32 0 0 8,258 0 8,258 Total on balance sheet financial instruments 212,417 268,309 91,993 98,255 23,709 3,505 698,187 (1,211) 696,976 Off-balance sheet positions subject to expected credit loss by rating category USD million 31.12.20 Rating category 1 0–1 2–3 4–5 6–8 9–13 Credit-impaired (defaulted) Total off - balance sheet exposure (maximum exposure to credit risk) ECL provisions Off-balance sheet financial instruments Guarantees 3,482 4,623 3,522 4,293 991 170 17,081 (63) of which: stage 1 3,482 4,219 2,688 3,558 739 0 14,687 (14) of which: stage 2 0 404 834 736 252 0 2,225 (15) of which: stage 3 0 0 0 0 0 170 170 (34) Irrevocable loan commitments 3,018 14,516 8,583 9,302 5,850 104 41,372 (142) of which: stage 1 3,018 13,589 6,873 8,739 4,676 0 36,894 (74) of which: stage 2 0 927 1,711 563 1,174 0 4,374 (68) of which: stage 3 0 0 0 0 0 104 104 0 Forward starting reverse repurchase and securities borrowing agreements 82 150 0 3,015 0 0 3,247 0 Total off balance sheet financial instruments 6,583 19,289 12,105 16,610 6,840 273 61,700 (205) Other credit lines Committed unconditionally revocable credit lines 574 15,448 5,958 8,488 11,501 108 42,077 (50) of which: stage 1 574 14,883 4,517 6,609 10,593 0 37,176 (29) of which: stage 2 0 565 1,441 1,879 908 0 4,792 (21) of which: stage 3 0 0 0 0 0 108 108 0 Irrevocable committed prolongation of existing loans 14 1,349 931 632 357 0 3,282 (2) of which: stage 1 14 1,349 930 630 355 0 3,277 (2) of which: stage 2 0 1 1 2 1 0 5 0 of which: stage 3 0 0 0 0 0 0 0 0 Total other credit lines 588 16,797 6,889 9,119 11,858 109 45,359 (52) 1 Refer to the “Internal UBS rating scale and mapping of external ratings” table in the “Risk management and control” section of this report for more information about rating categories. Financial assets subject to credit risk by rating category USD million 31.12.19 Rating category 1 0–1 2–3 4–5 6–8 9–13 Credit-impaired (defaulted) Total gross carrying amount ECL allowances Net carrying amount (maximum exposure to credit risk) Financial assets measured at amortized cost Cash and balances at central banks 105,195 1,873 0 0 0 0 107,068 0 107,068 of which: stage 1 105,195 1,873 0 0 0 0 107,068 0 107,068 Loans and advances to banks 309 9,764 1,326 687 298 1 12,386 (6) 12,379 of which: stage 1 309 9,764 1,326 677 228 0 12,303 (4) 12,298 of which: stage 2 0 0 0 10 71 0 81 (1) 80 of which: stage 3 0 0 0 0 0 1 1 (1) 0 Receivables from securities financing transactions 21,089 16,889 14,366 28,815 3,088 0 84,246 (2) 84,245 of which: stage 1 21,089 16,889 14,366 28,815 3,088 0 84,246 (2) 84,245 Cash collateral receivables on derivative instruments 4,899 10,553 5,033 2,765 39 0 23,289 0 23,289 of which: stage 1 4,899 10,553 5,033 2,765 39 0 23,289 0 23,289

Fair value measurement

Fair value measurement	12 Months Ended
Fair value measurement	Dec. 31, 2020
Disclosure Of Fair Value Measurement [Line Items]
Disclosure Of Fair Value Measurement Explanatory	Note 21 Fair value measurement a) Valuation principles All financial and non-financial assets and liabilities measured or disclosed at fair value are categorized into one of three fair value hierarchy levels in accordance with IFRS. The fair value hierarchy is based on the transparency of inputs to the valuation of an asset or liability as of the meas urement date . In certain cases, the inputs used to measure fair value may fall within different levels of the fair value hierarchy. For disclosure purposes, the level in the hierarchy within which an instrument is classified in its entirety is based on the lowest level input that is significant to the position’s fair value measurement: – Level 1 – quoted prices (unadjusted) in active markets for identical assets and liabilities; – Level 2 – valuation techniques for which all significant inputs are, or are based on, observable market data; or – Level 3 – valuation techniques for which significant inputs are not based on observable market data. Fair values are determined using quoted prices in active markets for identical assets or liabilities, where available. Whe re the market for a financial instrument or non-financial asset or liability is not active, fair value is established using a valuation technique, including pricing models. Valuation adjustments may be made to allow for additional factors, including model, liquidity, credit and funding risks, which are not explicitly captured within the valuation technique, but which would nevertheless be considered by market participants when establishing a price. The limitations inherent in a particular valuation techniqu e are considered in the determination of the classification of an asset or liability within the fair value hierarchy. Generally, the unit of account for a financial instrument is the individual instrument, and UBS applies valuation adjustments at an indivi dual instrument level, consistent with that unit of account. However, if certain conditions are met, UBS may estimate the fair value of a portfolio of financial assets and liabilities with substantially similar and offsetting risk exposures on the basis of the net open risks. › Refer to Note 21 d for more information b) Valuation governance UBS’s fair value measurement and model governance framework includes numerous controls and other procedur al safeguards that are intended to maximize the quality of fair value measurements reported in the financial statements. New products and valuation techniques must be reviewed and approved by key stakeholders from the risk and finance control funct ions. Responsibility for the ongoing measurement of financial and non-financial instruments at fair value resides with the business divisions. Fair value estimates are validated by the risk and finance control functions, which are independent of the busi ness divisions. Independent price verification is performed by Finance through benchmarking the business divisions’ fair value estimates with observable market prices and other independent sources. A governance framework and associated controls are in plac e in order to monitor the quality of third-party pricing sources where used . For instruments where valuation models are used to determine fair value, independent valuation and model control groups within Finance and Risk Control evaluate UBS’s models on a regular basis, including valuation and model input parameters , as well as pricing. As a result of the valuation controls employed, valuation adjustments may be made to the business divisions’ estimates of fair value to align with independent market data an d the relevant accounting standard. › Refer to Note 21 d for more information c) Fair value hierarchy The table below provides the fair value hierarchy classification of financial and non-financial assets and liabilities measured at fair value. The narrative that follows describes valuation techniques used in measuring their fair value of different product types ( including significant valuation inputs and assumptions used ) , and the factors considered in determining their classification within the fair value hierarchy. Determination of fair values from quoted market prices or valuation techniques 1 31.12.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial assets measured at fair value on a recurring basis Financial assets at fair value held for trading 107,507 15,553 2,337 125,397 113,634 12,068 1,812 127,514 of which: Equity instruments 90,307 1,101 171 91,579 96,161 400 226 96,787 Government bills / bonds 9,028 2,207 10 11,245 9,630 1,770 64 11,464 Investment fund units 7,374 1,794 23 9,192 7,088 1,729 50 8,867 Corporate and municipal bonds 789 8,356 817 9,961 755 6,617 542 7,914 Loans 0 1,860 1,134 2,995 0 1,180 791 1,971 Asset-backed securities 8 236 181 425 0 372 140 512 Derivative financial instruments 795 157,068 1,754 159,617 356 120,222 1,264 121,841 of which: Foreign exchange contracts 319 68,424 5 68,749 240 52,227 8 52,474 Interest rate contracts 0 50,353 537 50,890 6 42,288 263 42,558 Equity / index contracts 0 33,990 853 34,842 7 22,220 597 22,825 Credit derivative contracts 0 2,008 350 2,358 0 1,612 394 2,007 Commodity contracts 0 2,211 6 2,217 0 1,820 0 1,821 Brokerage receivables 0 24,659 0 24,659 0 18,007 0 18,007 Financial assets at fair value not held for trading 40,986 35,435 3,942 80,364 40,608 39,373 3,963 83,944 of which: Financial assets for unit-linked investment contracts 20,628 101 2 20,731 27,568 118 0 27,686 Corporate and municipal bonds 290 16,957 372 17,619 653 18,732 0 19,385 Government bills / bonds 19,704 3,593 0 23,297 12,089 3,700 0 15,790 Loans 0 7,699 862 8,561 0 10,206 1,231 11,438 Securities financing transactions 0 6,629 122 6,751 0 6,148 147 6,294 Auction rate securities 0 0 1,527 1,527 0 0 1,536 1,536 Investment fund units 278 447 105 831 194 448 98 740 Equity instruments 86 0 544 631 103 4 452 559 Other 0 10 408 418 0 16 499 515 Financial assets measured at fair value through other comprehensive income on a recurring basis Financial assets measured at fair value through other comprehensive income 1,144 7,114 0 8,258 1,906 4,439 0 6,345 of which: Asset-backed securities 0 6,624 0 6,624 0 3,955 0 3,955 Government bills / bonds 1,103 47 0 1,150 1,859 16 0 1,875 Corporate and municipal bonds 40 444 0 485 47 468 0 515 Non-financial assets measured at fair value on a recurring basis Precious metals and other physical commodities 6,264 0 0 6,264 4,597 0 0 4,597 Non-financial assets measured at fair value on a non-recurring basis Other non-financial assets 2 0 1 245 246 0 0 199 199 Total assets measured at fair value 156,696 239,831 8,278 404,805 161,101 194,110 7,237 362,448 Determination of fair values from quoted market prices or valuation techniques (continued) 1 31.12.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial liabilities measured at fair value on a recurring basis Financial liabilities at fair value held for trading 26,888 6,652 55 33,595 25,791 4,726 75 30,591 of which: Equity instruments 22,519 425 40 22,985 22,526 149 59 22,734 Corporate and municipal bonds 31 4,048 9 4,089 40 3,606 16 3,661 Government bills / bonds 3,642 1,036 0 4,678 2,820 646 0 3,466 Investment fund units 696 1,127 5 1,828 404 294 0 698 Derivative financial instruments 746 156,884 3,471 161,102 385 118,498 1,996 120,880 of which: Foreign exchange contracts 316 70,149 61 70,527 248 53,705 60 54,013 Interest rate contracts 0 43,389 527 43,916 7 36,434 130 36,571 Equity / index contracts 0 38,870 2,306 41,176 3 24,171 1,293 25,468 Credit derivative contracts 0 2,403 528 2,931 0 2,448 512 2,960 Commodity contracts 0 2,003 24 2,027 0 1,707 0 1,707 Financial liabilities designated at fair value on a recurring basis Brokerage payables designated at fair value 0 38,742 0 38,742 0 37,233 0 37,233 Debt issued designated at fair value 0 50,273 10,970 61,243 0 56,943 9,866 66,809 Other financial liabilities designated at fair value 0 29,671 716 30,387 0 35,119 822 35,940 of which: Financial liabilities related to unit-linked investment contracts 0 20,975 0 20,975 0 28,145 0 28,145 Securities financing transactions 0 7,317 0 7,317 0 5,742 0 5,742 Over-the-counter debt instruments 0 1,363 697 2,060 0 1,231 791 2,022 Total liabilities measured at fair value 27,635 282,222 15,212 325,069 26,176 252,518 12,759 291,452 1 Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented. 2 Other non-financial assets primarily consist of properties and other non-current assets held for sale, which are measured at the lower of their net carrying amount or fair value less costs to sell. Valuation techniques UBS uses widely recognized valuation techniques for determining the fair value of financial and non-financial instruments that are not actively traded and quoted. The most frequently applied valuation techni ques include discounted value of expected cash flows, relative value and option pricing methodologies. Discounted value of expected cash flows is a valuation technique that measures fair value using estimated expected future cash flows from assets or liabi lities and then discounts these cash flows using a discount rate or discount margin that reflects the credit and / or funding spreads required by the market for instruments with similar risk and liquidity profiles to produce a present value. When using suc h valuation techniques, expected future cash flows are estimated using an observed or implied market price for the future cash flows or by using industry standard cash flow projection models. The discount factors within the calculation are generated using industry - standard yield curve modeling techniques and models. Relative value models measure fair value based on the market prices of equivalent or comparable assets or liabilities, making adjustments for differences between the characteristics of the obser ved instrument and the instrument being valued. Option pricing models incorporate assumptions regarding the behavior of future price movements of an underlying referenced asset or assets to generate a probability-weighted future expected payoff for the opt ion. The resulting probability-weighted expected payoff is then discounted using discount factors generated from industry - standard yield curve modeling techniques and models. The option pricing model may be implemented using a closed-form analytical formul a or other mathematical techniques (e.g., binomial tree or Monte Carlo simulation). Where available, valuation techniques use market-observable assumptions and inputs. If such data is not available, inputs may be derived by reference to similar assets in a ctive markets, from recent prices for comparable transactions or from other observable market data. In such cases, the inputs selected are based on historical experience and practice for similar or analogous instruments, derivation of input levels based on similar products with observable price levels , and knowledge of current market conditions and valuation approaches. For more complex instruments, fair values may be estimated using a combination of observed transaction prices, consensus pricing services a nd relevant quotes. Consideration is given to the nature of the quotes (e.g., indicative or firm) and the relationship of recently evidenced market activity to the prices provided by consensus pricing services. UBS also uses internally developed models, wh ich are typically based on valuation methods and techniques recognized as standard within the industry. Assumptions and inputs used in valuation techniques include benchmark interest rate curves, credit and funding spreads used in estimating discount rates , bond and equity prices, equity index prices, foreign exchange rates, levels of market volatility and correlation. Refer to Note 21f for more information. The discount curves used by the Group incorporate the funding and credit characteristics of the inst ruments to which they are applied. Financial instruments excluding derivatives: valuation and classification in the fair value hierarchy Product V aluation and classification in the fair value hierarchy Government bills and bonds Valuation – Generally valued using prices obtained directly from the market . – Instruments not priced directly using active-market data are valued using discounted cash flow valuation techniques that incorporate market data for similar government instrum ents. Fair value hierarchy – G enerally traded in active markets with prices that can be obtained directly from these markets, resulting in classification as Level 1 , while the remaining positions are classified as Level 2 and Level 3 . Corporate and municipal bonds Valuation – Generally valued using prices obtained directly from the market for the security, or similar securities, adjusted for seniority, maturity and liquidity. – When prices are not available, instruments are valued using discounted cash f low valuation techniques incorporating the credit spread of the issuer or similar issuers. – For convertible bonds without directly comparable price s , issuances may be priced using a convertible bond model. Fair value hierarchy – Generally classified as Level 1 or Level 2 , depending on the depth of trading activity behind price sources. – Level 3 instruments have no suitable pricing information available . Traded loans and loans measured at fair value Valuation – V alued directly using market prices that reflect recent transactions or quoted dealer prices, where available. – Where no market price data is available, loans are valued by relative value benchmarking using pricing derived from debt instruments in comparable entities or different products in the s ame entity, or by using a credit default swap valuation technique, which requires inputs for credit spreads, credit recovery rates and interest rates. Recently originated commercial real estate loans are measured using a securitization approach based on ra ting agency guidelines. Fair value hierarchy – Instruments with suitably deep and liquid pricing information are classified as Level 2 . – P ositions requiring the use of valuation techniques, or for which the price sources have insufficient trading depth, are classified as Level 3. Product V aluation and classification in the fair value hierarchy Investment fund units Valuation – P redominantly exchange-traded, with readily available quoted prices in liquid markets. – Where market prices are not available, fair value may be measured using net asset values (NAVs) . Fair value hierarchy – Listed units are classified as Level 1, provided there is sufficient trading activity to justify active-market classification, while other positions are classified as Level 2. – Positions for which NAVs are not available are classified as Level 3. Asset-backed securities (ABS) Valuation – For liquid securities, the valuation process will use trade and price data, updated for movements in market levels between the time of trading and the time of valuation. Less liquid instruments are measured using discounted expected cash flows incorporating pr ice data for instruments or indices with similar risk profiles. Fair value hierarchy – RMBS, CMBS and other ABS are generally classified as Level 2. However, if significant inputs are unobservable, or if market or fundamental data is not available, they are classified as Level 3. Auction rate securities (ARS) Valuation – E ffective from the fourth quarter of 2020, ARS are valued utilizing a discounted cash flow methodology. The model captures interest rate risk emanating from the note coupon, credit risk attributable to the underlying closed - end fund investments, liquidity risk as a function of the level of trading volume in these positions, and extension risk as A R S are perpetual instruments that require an assumption regarding their maturity or issuer re demption date. – Previously, ARS were valued using market prices that reflected recent transactions after applying an adjustment for trade size or quoted dealer prices, where available. However, due to significant deterioration in the volume and size of tra nsactions in relevant ARS markets following the outbreak of the COVID-19 pandemic , a model-based approach provides a superior indication of orderly exit prices until such time as markets re-develop. Fair value hierarchy – G ranular and liquid pricing information is generally not available for ARS. As a result, these securities are classified as Level 3. Equity instruments Valuation – Listed equity instruments are generally valued using prices obtained directly from the market. – Unlisted equity holdings, including private equity positions, are initially marked at their transaction price and are revalued when reliable evidence of price movement becomes available or when the position is deemed to be impaired. Fair value hierarchy – The majority of equity securities are actively traded on public stock exchanges where quoted prices are readily and regularly available, resulting in Level 1 classification. Financial assets for unit-linked investment contracts Valuation – T he majority of assets are listed on exchanges and fair values are determined using quoted prices. Fair value hierarchy – Most assets are classified as Level 1 if actively traded, or Level 2 if trading is not active. – I nstruments for which prices are not readily available are classified as Level 3. Securities financing transactions Valuation – These instruments are valued using discounted expected cash flow techniques. The discount rate applied is based on funding curves that are relevant to the collateral eligibility terms. Fair value hierarchy – Collateral funding curves for these instruments are generally observable and, as a result, these positions are classified as Level 2. – Where the collateral terms are non-standard, the funding curve may be considered unobservable and these position s are classified as Level 3. Brokerage receivables and payables Valuation – F air value is determined based on the value of the underlying balances. Fair value hierarchy – D ue to their on-demand nature, these receivables and payables are deemed as Level 2. Amounts due under unit-linked investment contracts Valuation – The fair values of investment contract liabilities are determined by reference to the fair value of the corresponding assets. Fair value hierarchy – The liabilities themselves are not actively traded, but are mainly referenced to instruments that are actively traded and are therefore classified as Level 2. Derivative instruments: valuation and classification in the fair value hierarchy The curves used for discounting expected cash flows in the valuation of collateralized derivatives reflect the funding terms associated with the relevant collateral arrangement for the instrument being valued. These collateral arrangements differ across counterparties with respect to the eligible currency and interest terms of the collateral. The majority of collateralized derivatives are meas ured using a discount curve that is based on funding rates derived from overnight interest in the cheapest eligible currency for the respective counterparty collateral agreement. Uncollateralized and partially collateralized derivatives are discounted us ing the LIBOR (or equivalent) curve for the currency of the instrument. As described in Note 2 1 d , the fair value of uncollateralized and partially collateralized derivatives is then adjusted by credit valuation adjustments ( CVA s) , debit valuation adjustmen ts ( DVA s) and funding valuation adjustment ( FVA s) , as applicable, to reflect an estimation of the effect of counterparty credit risk, UBS’s own credit risk , and funding costs and benefits. › Refer to Note 10 for more information about derivative instruments Derivative product V aluation and classification in the fair value hierarchy Interest rate contracts Valuation – Interest rate swap contracts are valued by estimating future interest cash flows and discounting those cash flows using a rate that reflects the appropriate funding rate for the position being measured. The yield curves used to estimate future index levels and discount rates are generated using market-standard yield curve models using interest rates associated with current market activity. The key inputs to the models are interest rate swap rates, forward rate agreement rates, short-term interest rate futur es prices, basis swap spreads and inflation swap rates. – Interest rate option contracts are valued using various market-standard option models, using inputs that include interest rate yield curves, inflation curves, volatilities and correlations. – When the m aturity of an interest rate swap or option contract exceeds the term for which standard market quotes are observable for a significant input parameter, the contracts are valued by extrapolation from the last observable point using standard assumptions or b y reference to another observable comparable input parameter to represent a suitable proxy for that portion of the term. Fair value hierarchy – The majority of interest rate swaps are classified as Level 2 as the standard market contracts that form the inputs for yield curve models are generally traded in active and observable markets. – Options are generally treated as Level 2 as the calibration process enables the model output to be validated to active-market levels. Models calibrated in this way are the n used to revalue the portfolio of both standard options and more exotic products. – Interest rate swap or option contracts are classified as Level 3 when the term s exceed standard market-observable quotes. – Exotic options for which appropriate volatility or correlation input levels cannot be implied from observable market data are classified as Level 3. Credit derivative contracts Valuation – Credit derivative contracts are valued using industry - standard models based primarily on market credit spreads, upfront pricing points and implied recovery rates. Where a derivative credit spread is not directly available, it may be derived from the price of the reference cash bond. – Asset-backed credit deriv atives are valued using a valuation technique similar to that of the underlying security with an adjustment to reflect the funding differences between cash and synthetic form. Fair value hierarchy – Single-entity and portfolio credit derivative contracts are classified as Level 2 when credit spreads and recovery rates are determined from actively traded observable market data. Where the underlying reference name(s) are not actively traded and the correlation cannot be directly mapped to actively traded tra nche instruments, these contracts are classified as Level 3. – Asset-backed credit derivatives follow the characteristics of the underlying security and are therefore distributed across Level 2 and Level 3. Derivative product V aluation and classification in the fair value hierarchy Foreign exchange contracts Valuation – Open spot FX contracts are valued using the FX spot rate observed in the market. – Forward FX contracts are valued using the FX spot rate adjusted for forward pricing points observed from standard market-based sources. – OTC FX option contracts are valued using market-standard option va luation models. The models used for shorter-dated options (i.e., maturities of five years or less) tend to be different than those used for longer-dated options because the models needed for longer-dated OTC FX contracts require additional consideration of interest rate and FX rate interdependency. – The valuation for multi-dimensional FX options uses a multi-local volatility model, which is calibrated to the observed FX volatilities for all relevant FX pairs. Fair value hierarchy – The markets for FX spot and FX forward pricing points are both actively traded and observable and therefore such FX contracts are generally classified as Level 2. – A significant proportion of OTC FX option contracts are classified as Level 2 as inputs are derived mostly from standard market contracts traded in active and observable markets. – OTC FX option contracts classified as Level 3 include multi-dimensional FX options and long-dated FX exotic option contracts where there is no active market from which t o derive volatility or correlation inputs. Equity / index contracts Valuation – Equity forward contracts have a single stock or index underlying and are valued using market-standard models. The key inputs to the models are stock prices, estimated dividend rates and equity funding rates (which are implied from prices of forward contracts observed in the market). Estimated cash flows are then discounted using market-standard discounted cash flow models using a rate that reflects the appropriate funding rate f or that portion of the portfolio. When no market data is available for the instrument maturity, they are valued by extrapolation of available data, use of historical dividend data, or use of data for a related equity. – Equity option contracts are valued us ing market-standard models that estimate the equity forward level as described for equity forward contracts and incorporate inputs for stock volatility and for correlation between stocks within a basket. The probability-weighted expected option payoff gene rated is then discounted using market-standard discounted cash flow models applying a rate that reflects the appropriate funding rate for that portion of the portfolio. When volatility, forward or correlation inputs are not available, they are valued using extrapolation of available data, historical dividend, correlation or volatility data, or the equivalent data for a related equity. Fair value hierarchy – As inputs are derived mostly from standard market contracts traded in active and observable markets, a significant proportion of equity forward contracts are classified as Level 2. – Equity option positions for which inputs are derived from standard market contracts traded in active and observable markets are also classified as Level 2. Level 3 positions a re those for which volatility, forward or correlation inputs are not observable. Commodity contracts Valuation – Commodity forward and swap contracts are measured using market-standard models that use market forward levels on standard instruments. – Commodity option contracts are measured using market-standard option models that estimate the commodity forward level as described for commodity forward and swap contracts, incorporating inputs for the volatility of the underlying index or commodity. For c ommodity options on baskets of commodities or bespoke commodity indices, the valuation technique also incorporates inputs for the correlation between different commodities or commodity indices. Fair value hierarchy – Individual commodity contracts are typically classified as Level 2 , because active forward and volatility market data is available. d) Valuation adjustments The output of a valuation technique is always an estimate of a fair value that cannot be measured with complete certainty. As a result, valuations are adjusted, where appropriate and when such factors would be considered by market participants in estimating fair value, to reflect close-out costs, credit exposure, model-driven valuation uncertainty, funding costs and benefits, trading restrictions and other factors. Deferred day-1 profit or loss reserves For new transactions where t he valuation technique used to measure fair value requires significant inputs that are not based on observable market data, the financial instrument is initially recognized at the transaction price. The transaction price may differ from the fair value obta ined using a valuation technique, where any such difference is deferred and not initially recognized in the income statement. Deferred day-1 profit or loss is generally released into Other net income from financial instruments measured at fair value throu gh profit or loss when pricing of equivalent products or the underlying parameters become s observable or when the transaction is closed out. The table below summarizes the changes in deferred day-1 profit or loss reserves during the respective period. Deferred day-1 profit or loss reserves USD million 2020 2019 2018 Reserve balance at the beginning of the year 146 255 338 Profit / (loss) deferred on new transactions 362 171 341 (Profit) / loss recognized in the income statement (238) (278) (417) Foreign currency translation 0 (2) (6) Reserve balance at the end of the year 269 146 255 Own credit Own credit risk is reflected in the valuation of UBS’s fair value option liabilities where this component is considered relevant for valuation purposes by UBS’s counterparties and other market participants. Changes in the fair value of financial liabilities designated at fair value through profit or loss relat ed to own credit are recognized in Other comprehensive income directly within Retained earnings, with no reclassification to the income statement in future periods. This presentation does not create or increase an accounting mismatch in the income statemen t, as the Group does not hedge changes in own credit. Own credit is estimated using own credit adjustment (OCA) curves, which incorporate observable market data, including market-observed secondary prices for UBS’s debt, UBS’s credit default swap spreads and debt curves of peers . In the table below the change in unrealized own credit consists of changes in fair value that are attributable to the change in UBS’s credit spreads, as well as the effect of changes in fair values attributable to factors other th an credit spreads, such as redemptions, effects from time decay and changes in interest and other market rates. Realized own credit is recognized when an instrument with an associated unrealized own credit adjustment is repurchased prior to the contractual maturity date. Life-to-date amounts reflect the cumulative unrealized change since initial recognition. › Refer to Note 16 for more information about debt issued designated at fair value Own credit adjustments on financial liabilities designated at fair value Included in Other comprehensive income For the year ended USD million 31.12.20 31.12.19 31.12.18 Recognized during the period: Realized gain / (loss) 2 8 (3) Unrealized gain / (loss) (295) (408) 519 Total gain / (loss), before tax (293) (400) 517 As of USD million 31.12.20 31.12.19 31.12.18 Recognized on the balance sheet as of the end of the period: Unrealized life-to-date gain / (loss) (381) (88) 320 Credit valuation adjustments In order to measure the fair value of OTC derivative instruments, including funded derivative instruments that are classified as Financial assets at fair value not held for trading, CVAs are necessary to reflect the credit risk of the counterparty inherent in these instruments. This amount represents the estimated fair value of protection required to hedge the counterparty credit risk of such instruments. A CVA is determined for each counterparty , considering all exposures with that counterparty, and is dep endent on the expected future value of exposures, default probabilities and recovery rates, applicable collateral or netting arrangements, break clauses, funding spreads and other contractual factors. Funding valuation adjustments FVAs reflect the costs a nd benefits of funding associated with uncollateralized and partially collateralized derivative receivables and payables and are calculated as the valuation effect from moving the discounting of the uncollateralized derivative cash flows from LIBOR to OCA using the CVA framework, including the probability of counterparty default. An FVA is also applied to collateralized derivative assets in cases where the collateral cannot be sold or repledged. Debit valuation adjustments A DVA is estimated to incorporate own credit in the valuation of derivatives where a n FVA is not already recognized. The DVA calculation is effectively consistent with the CVA framework, being determined for each counterparty , considering all exposures with that counterparty and taking in to account collateral netting agreements, expected future mark-to-market movements and UBS’s credit default spreads. Other valuation adjustments Instruments that are measured as part of a portfolio of combined long and short positions are valued at mid-mar ket levels to ensure consistent valuation of the long- and short-component risks. A liquidity valuation adjustment is t
UBS AG
Disclosure Of Fair Value Measurement [Line Items]
Disclosure Of Fair Value Measurement Explanatory	Note 21 Fair value measurement a) Valuation principles All financial and non-financial assets and liabilities measured or disclosed at fair value are categorized into one of three fair value hierarchy levels in accordance with IFRS. The fair value hierarchy is based on the transparency of inputs to the valuation of an asset or liability as of the measurement date . In certain cases, the in puts used to measure fair value may fall within different levels of the fair value hierarchy. For disclosure purposes, the level in the hierarchy within which an instrument is classified in its entirety is based on the lowest level input that is significan t to the position’s fair value measurement: – Level 1 – quoted prices (unadjusted) in active markets for identical assets and liabilities; – Level 2 – valuation techniques for which all significant inputs are, or are based on, observable market data; or – Level 3 – valuation techniques for which significant inputs are not based on observable market data. Fair values are determined using quoted prices in active markets for identical assets or liabilities, where available. Where the market for a financial instrume nt or non-financial asset or liability is not active, fair value is established using a valuation technique, including pricing models. Valuation adjustments may be made to allow for additional factors, including model, liquidity, credit and funding risks, which are not explicitly captured within the valuation technique, but which would nevertheless be considered by market participants when establishing a price. The limitations inherent in a particular valuation technique are considered in the determination of the classification of an asset or liability within the fair value hierarchy. Generally, the unit of account for a financial instrument is the individual instrument, and UBS applies valuation adjustments at an individual instrument level, consistent with that unit of account. However, if certain conditions are met, UBS may estimate the fair value of a portfolio of financial assets and liabilities with substantially similar and offsetting risk exposures on the basis of the net open risks. › Refer to Note 21 d for more information b) Valuation governance UBS’s fair value measurement and model governance framework includes numerous controls and other procedural safeguards that are int ended to maximize the quality of fair value measurements reported in the financial statements. New products and valuation techniques must be reviewed and approved by key stakeholders from the risk and finance control functions. Responsibility for the ongoi ng measurement of financial and non-financial instruments at fair value resides with the business divisions. Fair value estimates are validated by the risk and finance control functions, which are independent of the business divisions. Independent price verification is performed by Finance through benchmarking the business divisions’ fair value estimates with observable market prices and other independent sources. A governance framework and associated controls are in place in order to monitor the quality of third-party pricing sources where used . For instruments where valuation models are used to determine fair value, independent valuation and model control groups within Finance and Risk Control evaluate UBS’s models on a regular basis, including valuation and model input parameters , as well as pricing. As a result of the valuation controls employed, valuation adjustments may be made to the business divisions’ estimates of fair value to align with independent market data and the relevant accounting standard . › Refer to Note 21 d for more information c) Fair value hierarchy The table below provides the fair value hie rarchy classification of financial and non-financial assets and liabilities measured at fair value. The narrative that follows describes valuation techniques used in measuring their fair value of different product types ( including significant valuation inp uts and assumptions used ) , and the factors considered in determining their classification within the fair value hierarchy. Determination of fair values from quoted market prices or valuation techniques 1 31.12.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial assets measured at fair value on a recurring basis Financial assets at fair value held for trading 107,526 15,630 2,337 125,492 113,635 12,248 1,812 127,695 of which: Equity instruments 90,327 1,101 171 91,599 96,162 400 226 96,788 Government bills / bonds 9,028 2,207 10 11,245 9,630 1,770 64 11,464 Investment fund units 7,374 1,794 23 9,192 7,088 1,729 50 8,867 Corporate and municipal bonds 789 8,432 817 10,038 755 6,796 542 8,093 Loans 0 1,860 1,134 2,995 0 1,180 791 1,971 Asset-backed securities 8 236 181 425 0 372 140 512 Derivative financial instruments 795 157,069 1,754 159,618 356 120,224 1,264 121,843 of which: Foreign exchange contracts 319 68,425 5 68,750 240 52,228 8 52,476 Interest rate contracts 0 50,353 537 50,890 6 42,288 263 42,558 Equity / index contracts 0 33,990 853 34,842 7 22,220 597 22,825 Credit derivative contracts 0 2,008 350 2,358 0 1,612 394 2,007 Commodity contracts 0 2,211 6 2,217 0 1,820 0 1,821 Brokerage receivables 0 24,659 0 24,659 0 18,007 0 18,007 Financial assets at fair value not held for trading 40,986 35,110 3,942 80,038 40,608 39,065 3,962 83,636 of which: Financial assets for unit-linked investment contracts 20,628 101 2 20,731 27,568 118 0 27,686 Corporate and municipal bonds 290 16,957 372 17,619 653 18,732 0 19,385 Government bills / bonds 19,704 3,593 0 23,297 12,089 3,700 0 15,790 Loans 0 7,699 862 8,561 0 10,206 1,231 11,438 Securities financing transactions 0 6,629 122 6,751 0 6,148 147 6,294 Auction rate securities 0 0 1,527 1,527 0 0 1,536 1,536 Investment fund units 278 121 105 505 194 140 98 432 Equity instruments 86 0 544 631 103 4 451 559 Other 0 10 408 418 0 16 499 515 Financial assets measured at fair value through other comprehensive income on a recurring basis Financial assets measured at fair value through other comprehensive income 1,144 7,114 0 8,258 1,906 4,439 0 6,345 of which: Asset-backed securities 0 6,624 0 6,624 0 3,955 0 3,955 Government bills / bonds 1,103 47 0 1,150 1,859 16 0 1,875 Corporate and municipal bonds 40 444 0 485 47 468 0 515 Non-financial assets measured at fair value on a recurring basis Precious metals and other physical commodities 6,264 0 0 6,264 4,597 0 0 4,597 Non-financial assets measured at fair value on a non-recurring basis Other non-financial assets 2 0 1 245 246 0 0 199 199 Total assets measured at fair value 156,716 239,583 8,278 404,576 161,102 193,983 7,237 362,322 Determination of fair values from quoted market prices or valuation techniques (continued) 1 31.12.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial liabilities measured at fair value on a recurring basis Financial liabilities at fair value held for trading 26,889 6,652 55 33,595 25,791 4,726 75 30,591 of which: Equity instruments 22,519 425 40 22,985 22,526 149 59 22,734 Corporate and municipal bonds 31 4,048 9 4,089 40 3,606 16 3,661 Government bills / bonds 3,642 1,036 0 4,678 2,820 646 0 3,466 Investment fund units 696 1,127 5 1,828 404 294 0 698 Derivative financial instruments 746 156,884 3,471 161,102 385 118,498 1,996 120,880 of which: Foreign exchange contracts 316 70,149 61 70,527 248 53,705 60 54,013 Interest rate contracts 0 43,389 527 43,916 7 36,434 130 36,571 Equity / index contracts 0 38,870 2,306 41,176 3 24,171 1,293 25,468 Credit derivative contracts 0 2,403 528 2,931 0 2,448 512 2,960 Commodity contracts 0 2,003 24 2,027 0 1,707 0 1,707 Financial liabilities designated at fair value on a recurring basis Brokerage payables designated at fair value 0 38,742 0 38,742 0 37,233 0 37,233 Debt issued designated at fair value 0 50,273 9,595 59,868 0 56,943 9,649 66,592 Other financial liabilities designated at fair value 0 29,682 2,091 31,773 0 35,119 1,039 36,157 of which: Financial liabilities related to unit-linked investment contracts 0 20,975 0 20,975 0 28,145 0 28,145 Securities financing transactions 0 7,317 0 7,317 0 5,742 0 5,742 Over-the-counter debt instruments 0 1,363 697 2,060 0 1,231 791 2,022 Total liabilities measured at fair value 27,635 282,233 15,212 325,080 26,176 252,518 12,759 291,452 1 Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented. 2 Other non-financial assets primarily consist of properties and other non-current assets held for sale, which are measured at the lower of their net carrying amount or fair value less costs to sell. Valuation techniques UBS uses widely recognized valuation techniques for determining the fair value of financial and non-financial instruments that are not actively traded and quoted. The most frequently applied valuation techniq ues include discounted value of expected cash flows, relative value and option pricing methodologies. Discounted value of expected cash flows is a valuation technique that measures fair value using estimated expected future cash flows from assets or liabil ities and then discounts these cash flows using a discount rate or discount margin that reflects the credit and / or funding spreads required by the market for instruments with similar risk and liquidity profiles to produce a present value. When using such valuation techniques, expected future cash flows are estimated using an observed or implied market price for the future cash flows or by using industry standard cash flow projection models. The discount factors within the calculation are generated using i ndustry - standard yield curve modeling techniques and models. Relative value models measure fair value based on the market prices of equivalent or comparable assets or liabilities, making adjustments for differences between the characteristics of the observ ed instrument and the instrument being valued. Option pricing models incorporate assumptions regarding the behavior of future price movements of an underlying referenced asset or assets to generate a probability-weighted future expected payoff for the option. The resulting probability-weighted expected payoff is then discounted using discount factors generated from industry - standard yield curve modeling techniques and models. The option pricing model may be implemented using a closed-form analytical fo rmula or other mathematical techniques (e.g., binomial tree or Monte Carlo simulation). Where available, valuation techniques use market-observable assumptions and inputs. If such data is not available, inputs may be derived by reference to similar assets in active markets, from recent prices for comparable transactions or from other observable market data. In such cases, the inputs selected are based on historical experience and practice for similar or analogous instruments, derivation of input levels base d on similar products with observable price levels , and knowledge of current market conditions and valuation approaches. For more complex instruments, fair values may be estimated using a combination of observed transaction prices, consensus pricing servic es and relevant quotes. Consideration is given to the nature of the quotes (e.g., indicative or firm) and the relationship of recently evidenced market activity to the prices provided by consensus pricing services. UBS also uses internally developed models , which are typically based on valuation methods and techniques recognized as standard within the industry. Assumptions and inputs used in valuation techniques include benchmark interest rate curves, credit and funding spreads used in estimating discount rates, bond and equity prices, equity index prices, foreign exchange rates, levels of market volatility and correlation. Refer to Note 21f for more information. The discount curves used by UBS incorporate the funding and credit characteristics of the instruments to which they are applied. Financial instruments excluding derivatives: valuation and classification in the fair value hierarchy Product V aluation and classification in the fair value hierarchy Government bi lls and bonds Valuation – Generally valued using prices obtained directly from the market . – Instruments not priced directly using active-market data are valued using discounted cash flow valuation techn iques that incorporate market data for similar government instruments. Fair value hierarchy – G enerally traded in active markets with prices that can be obtained directly from these markets, resulting in classification as Level 1 , while the remaining posi tions are classified as Level 2 and Level 3 . Corporate and municipal bonds Valuation – Generally valued using prices obtained directly from the market for the security, or similar securities, adjusted for seniority, maturity and liquidity. – When prices are not available, instruments are valued using discounted cash flow valuation techniques incorporating the credit spread of the issuer or similar issuers. – For convertible bonds without directly comparable price s , issuances may be priced using a convertible bond model. Fair value hierarchy – Generally classified as Level 1 or Level 2 , depending on the depth of trading activity behind price sources. – Level 3 instruments have no suitable pricing information available . Traded loans and loans measured at fair value Valuation – V alued directly using market prices that reflect recent transactions or quoted dealer prices, where available. – Where no market price data is available, loans are valued by relative value benchmarking using pricing derived from debt instruments in comparable entities or different products in the same entity, or by using a credit default swap valuation technique, which requires inputs for credit spreads, credit recovery rates and interest ra tes. Recently originated commercial real estate loans are measured using a securitization approach based on rating agency guidelines. Fair value hierarchy – Instruments with suitably deep and liquid pricing information are classified as Level 2 . – P ositions requiring the use of valuation techniques, or for which the price sources have insufficient trading depth, are classified as Level 3. Product V aluation and classification in the fair value hierarchy Investment fund units Valuation – P redominantly exchange-traded, with readily available quoted prices in liquid markets. – Where market prices are not available, fair value may be measured using net asset values (NAVs) . Fair value hierarchy – Listed units are classified as Level 1, provided there is sufficient trading activity to justify active-market classification, while other positions are classified as Level 2. – Positions for which NAVs are not available are classified as Level 3. Asset-backed securities (ABS) Valuation – For liquid securities, the valuation process will use trade and price data, updated for movements in market levels between the time of trading and the time of valuation. Less liquid instruments are measured using discounted expected cash flows incorporating price data for instruments or indices with similar risk profiles. Fair value hierarchy – RMBS, CMBS and other ABS are generally classified as Level 2. However, if significant inputs are unobservable, or if market or fundamental data is not available, they are classified as Level 3. Auction rate securities (ARS) Valuation – E ffective from the fourth quarter of 2020, ARS are valued utilizing a discounted cash flow methodology. The model captures interest rate risk emanating from the note coupon, credit risk attributable to the underlying closed - end fund investments, liquidity risk as a function of the level of trading volume in these positions, and extension risk as A R S are perpetual instruments that require an assumption regarding their maturity or issuer redemption date. – Previously, ARS were valued using market prices that reflected recent transactions after applying an adjustment for trade si ze or quoted dealer prices, where available. However, due to significant deterioration in the volume and size of transactions in relevant ARS markets following the outbreak of the COVID-19 pandemic , a model-based approach provides a superior indication of orderly exit prices until such time as markets re-develop. Fair value hierarchy – G ranular and liquid pricing information is generally not available for ARS. As a result, these securities are classified as Level 3. Equity instruments Valuation – Listed equity instruments are generally valued using prices obtained directly from the market. – Unlisted equity holdings, including private equity positions, are initially marked at their transaction price and are revalued when reliable evidence of price mo vement becomes available or when the position is deemed to be impaired. Fair value hierarchy – The majority of equity securities are actively traded on public stock exchanges where quoted prices are readily and regularly available, resulting in Level 1 classification. Financial assets for unit-linked investment contracts Valuation – T he majority of assets are listed on exchanges and fair values are determined using quoted prices. Fair value hierarchy – Most assets are classified as Level 1 if actively traded, or Level 2 if trading is not active. – I nstruments for which prices are not readily available are classified as Level 3. Securities financing transactions Valuation – These instruments are valued using discounted expected cash flow techniques. The discount rate applied is based on funding curves that are relevant to the collateral eligibility terms. Fair value hierarchy – Collateral funding curves for these instruments are generally observable and, as a result, these positions are classified as Level 2. – Where the collateral terms are non-standard, the funding curve may be considered unobservable and these positions are classified as Level 3. Brokerage receivables and payables Valuation – F air value is determined based on the value of the underlying balances. Fair value hierarchy – D ue to their on-demand nature, these receivables and payables are deemed as Level 2. Amounts due under unit-linked investment contracts Valuation – The fair values of investment contract liabilities are determined by reference to the fair value of the corresponding assets. Fair value hierarchy – The liabilities themselves are not actively traded, but are mainly referenced to instruments that are actively traded and are therefore classified as Level 2. Derivative instruments: valuation and classification in the fair value hierarchy The curves used for discounting expected cash flows in the valuation of collateralized derivatives reflect the funding terms associated with the relevant collateral arrangement for the instrument being valued. These collateral arrangements differ across counte rparties with respect to the eligible currency and interest terms of the collateral. The majority of collateralized derivatives are measured using a discount curve that is based on funding rates derived from overnight interest in the cheapest eligible curr ency for the respective counterparty collateral agreement. Uncollateralized and partially collateralized derivatives are discounted using the LIBOR (or equivalent) curve for the currency of the instrument. As described in Note 2 1 d , the fair value of uncol lateralized and partially collateralized derivatives is then adjusted by credit valuation adjustments ( CVA s) , debit valuation adjustments ( DVA s) and funding valuation adjustment ( FVA s) , as applicable, to reflect an estimation of the effect of counterparty credit risk, UBS’s own credit risk , and funding costs and benefits. › Refer to Note 10 for more information about derivative instruments Derivative product V aluation and classification in the fair value hierarchy Interest rate contracts Valuation – Interest rate swap contracts are valued by estimating future interest cash flows and discounting those cash flows using a rate that reflects the appropriate funding rate for the position being measured. The yield curves us ed to estimate future index levels and discount rates are generated using market-standard yield curve models using interest rates associated with current market activity. The key inputs to the models are interest rate swap rates, forward rate agreement rat es, short-term interest rate futures prices, basis swap spreads and inflation swap rates. – Interest rate option contracts are valued using various market-standard option models, using inputs that include interest rate yield curves, inflation curves, volatil ities and correlations. – When the maturity of an interest rate swap or option contract exceeds the term for which standard market quotes are observable for a significant input parameter, the contracts are valued by extrapolation from the last observable poi nt using standard assumptions or by reference to another observable comparable input parameter to represent a suitable proxy for that portion of the term. Fair value hierarchy – The majority of interest rate swaps are classified as Level 2 as the standard market contracts that form the inputs for yield curve models are generally traded in active and observable markets. – Options are generally treated as Level 2 as the calibration process enables the model output to be validated to active-mar ket levels. Models calibrated in this way are then used to revalue the portfolio of both standard options and more exotic products. – Interest rate swap or option contracts are classified as Level 3 when the term s exceed standard market-observable quotes. – Exotic options for which appropriate volatility or correlation input levels cannot be implied from observable market data are classified as Level 3. Credit derivative contracts Valuation – Credit derivative contracts are valued using industry - standard models based primarily on market credit spreads, upfront pricing points and implied recovery rates. Where a derivative credit spread is not directly available, it may be derived from the price of the reference cash bond. – Asset-backed credit deriv atives are valued using a valuation technique similar to that of the underlying security with an adjustment to reflect the funding differences between cash and synthetic form. Fair value hierarchy – Single-entity and portfolio credit derivative contracts are classified as Level 2 when credit spreads and recovery rates are determined from actively traded observable market data. Where the underlying reference name(s) are not actively traded and the correlation cannot be directly mapped to actively traded tranche instruments, these contracts are classified as Level 3. – Asset-backed credit derivatives follow the characteristics of the underlying security and are therefore distributed across Level 2 and Level 3. Derivative product V aluation and classification in the fair value hierarchy Foreign exchange contracts Valuation – Open spot FX contracts are valued using the FX spot rate observed in the market. – Forward FX contracts are valued using the FX spot rate adjusted for forward pricing points observed from standard market-based sources. – OTC FX option contracts are valued using market-stan dard option valuation models. The models used for shorter-dated options (i.e., maturities of five years or less) tend to be different than those used for longer-dated options because the models needed for longer-dated OTC FX contracts require additional co nsideration of interest rate and FX rate interdependency. – The valuation for multi-dimensional FX options uses a multi-local volatility model, which is calibrated to the observed FX volatilities for all relevant FX pairs. Fair value hierarchy – The markets for FX spot and FX forward pricing points are both actively traded and observable and therefore such FX contracts are generally classified as Level 2. – A significant proportion of OTC FX option contracts are classified as Level 2 as inputs are derived mostly from standard market contracts traded in active and observable markets. – OTC FX option contracts classified as Level 3 include multi-dimensional FX options and long-dated FX exotic option contracts where there is no active market from which t o derive volatility or correlation inputs. Equity / index contracts Valuation – Equity forward contracts have a single stock or index underlying and are valued using market-standard models. The key inputs to the models are stock prices, estimated dividend rates and equity funding rates (which are implied from prices of forward contracts observed in the market). Estimated cash flows are then discounted using market-standard discounted cash flow models using a rate that reflects the appropriate fundi ng rate for that portion of the portfolio. When no market data is available for the instrument maturity, they are valued by extrapolation of available data, use of historical dividend data, or use of data for a related equity. – Equity option contracts are valued using market-standard models that estimate the equity forward level as described for equity forward contracts and incorporate inputs for stock volatility and for correlation between stocks within a basket. The probability-weighted expected option pa yoff generated is then discounted using market-standard discounted cash flow models applying a rate that reflects the appropriate funding rate for that portion of the portfolio. When volatility, forward or correlation inputs are not available, they are val ued using extrapolation of available data, historical dividend, correlation or volatility data, or the equivalent data for a related equity. Fair value hierarchy – As inputs are derived mostly from standard market contracts traded in active and observable markets, a significant proportion of equity forward contracts are classified as Level 2. – Equity option positions for which inputs are derived from standard market contracts traded in active and observable markets are also classified as Level 2. Level 3 positions are those for which volatility, forward or correlation inputs are not observable. Commodity contracts Valuation – Commodity forward and swap contracts are measured using market-standard models that use market forward levels on standard instruments. – Commodity option contracts are measured using market-standard option models that estimate the commodity forward level as described for commodity forward and swap contracts, incorporating inputs for the volatility of the underlying index or commodity. For commodity options on baskets of commodities or bespoke commodity indices, the valuation technique also incorporates input s for the correlation between different commodities or commodity indices. Fair value hierarchy – Individual commodity contracts are typically classified as Level 2 , because active forward and volatility market data is available. d) Valuation adjustments The output of a valuation technique is always an estimate of a fair value that cannot be measured with complete certainty. As a result, valuations are adjusted, where appropriate and when such factors would be considered by market participants in estimatin g fair value, to reflect close-out costs, credit exposure, model-driven valuation uncertainty, funding costs and benefits, trading restrictions and other factors. Deferred day-1 profit or loss reserves For new transactions where the valuation technique us ed to measure fair value requires significant inputs that are not based on observable market data, the financial instrument is initially recognized at the transaction price. The transaction price may differ from the fair value obtained using a valuation te chnique, where any such difference is deferred and not initially recognized in the income statement. Deferred day-1 profit or loss is generally released into Other net income from financial instruments measured at fair value through profit or loss when pr icing of equivalent products or the underlying parameters become s observable or when the transaction is closed out. The table below summarizes the changes in deferred day-1 profit or loss reserves during the respective period. Deferred day-1 profit or loss reserves USD million 2020 2019 2018 Reserve balance at the beginning of the year 146 255 338 Profit / (loss) deferred on new transactions 362 171 341 (Profit) / loss recognized in the income statement (238) (278) (417) Foreign currency translation 0 (2) (6) Reserve balance at the end of the year 269 146 255 Own credit Own credit risk is reflected in the valuation of UBS’s fair value option liabilities where this component is considered relevant for valuation purposes by UBS’s counterparties and other market participants. Changes in the fair value of financial liabilities designated at fair value through profit or loss related to own credit are recognize d in Other comprehensive income directly within Retained earnings, with no reclassification to the income statement in future periods. This presentation does not create or increase an accounting mismatch in the income statement, as UBS does not hedge c hanges in own credit. Own credit is estimated using own credit adjustment (OCA) curves, which incorporate observable market data, including market-observed secondary prices for UBS’s debt, UBS’s credit default swap spreads and debt curves of peers . In the table below the change in unrealized own credit consists of changes in fair value that are attributable to the change in UBS’s credit spreads, as well as the effect of changes in fair values attributable to factors other than credit spreads, such as redem ptions, effects from time decay and changes in interest and other market rates. Realized own credit is recognized when an instrument with an associated unrealized own credit adjustment is repurchased prior to the contractual maturity date. Life-to-date amo unts reflect the cumulative unrealized change since initial recognition. › Refer to Note 16 for more information about debt issued designated at fair value Own credit adjustments on financial liabilities designated at fair value Included in Other comprehensive income For the year ended USD million 31.12.20 31.12.19 31.12.18 Recognized during the period: Realized gain / (loss) 2 8 (3) Unrealized gain / (loss) (295) (408) 519 Total gain / (loss), before tax (293) (400) 517 As of USD million 31.12.20 31.12.19 31.12.18 Recognized on the balance sheet as of the end of the period: Unrealized life-to-date gain / (loss) (381) (88) 320 Credit valuation adjustments In order to measure the fair value of OTC derivative instruments, including funded derivative instruments that are classified as Financial assets at fair value not held for trading, CVAs are necessary to reflect the credit risk of the counterpa rty inherent in these instruments. This amount represents the estimated fair value of protection required to hedge the counterparty credit risk of such instruments. A CVA is determined for each counterparty, considering all exposures with that counterparty , and is dependent on the expected future value of exposures, default probabilities and recovery rates, applicable collateral or netting arrangements, break clauses, funding spreads and other contractual factors. Funding valuation adjustments FVAs reflect the costs and benefits of funding associated with uncollateralized and partially collateralized derivative receivables and payables and are calculated as the valuation effect from moving the discounting of the uncollateralized derivative cash flows from L IBOR to OCA using the CVA framework, including the probability of counterparty default. An FVA is also applied to collateralized derivative assets in cases where the collateral cannot be sold or repledged. Debit valuation adjustments A DVA is estimated to incorporate own credit in the valuation of derivatives where a n FVA is not already recognized. The DVA calculation is effectively consistent with the CVA framework, being determined for each counterparty, considering all exposures with that counterparty a nd taking into account collateral netting agreements, expected future mark-to-market movements and UBS’s credit default spreads. Other valuation adjustments Instruments that are measured as part of a portfolio of combined long and short positions are value d at mid-market levels to ensure consistent valuation of the long- and short-component risks. A liquidity valuation adjustment is then made to t

Offsetting financial assets and

Offsetting financial assets and financial liabilities	12 Months Ended
Offsetting financial assets and financial liabilities	Dec. 31, 2020
Offsetting Financial Assets And Financial Liabilities [Line Items]
Disclosure Of Offsetting Of Financial Assets And Financial Liabilities Explanatory	Note 22 Offsetting financial assets and financial liabilities UBS enters into netting agreements with counterparties to manage the credit risks associated primarily with repurchase and reverse repurchase transactions, securities borrowing and lending, over-the-counter derivatives and exchange-traded derivatives. Thes e netting agreements and similar arrangements generally enable the counterparties to set off liabilities against available assets received in the ordinary course of business and / or in the event that the counterparties to the transaction are unable to ful fill their contractual obligations. The right of setoff is a legal right to settle or otherwise eliminate all or a portion of an amount due by applying an amount receivable from the same counterparty against it, thus reducing credit exposure. The table bel ow provides a summary of financial assets subject to offsetting, enforceable master netting arrangements and similar agreements, as well as financial collateral received to mitigate credit exposures for these financial assets. The gross financial assets of the Group that are subject to offsetting, enforceable netting arrangements and similar agreements are reconciled to the net amounts presented within the associated balance sheet line, after giving effect to financial liabilities with the same counterparti es that have been offset on the balance sheet and other financial assets not subject to an enforceable netting arrangement or similar agreement , as well as other out-of-scope items . Furthermore , related amounts for financial liabilities and collateral rece ived that are not offset on the balance sheet are shown so as to arrive at financial assets after consideration of netting potential. The Group engages in a variety of counterparty credit risk mitigation strategies in addition to netting and collateral arrangem ents. Therefore, the net amounts presented in the tables on this and on the next page do not purport to represent their actual credit risk exposure. Financial assets subject to offsetting, enforceable master netting arrangements and similar agreements Assets subject to netting arrangements Netting recognized on the balance sheet Netting potential not recognized on the balance sheet 3 Assets not subject to netting arrangements 4 Total assets As of 31.12.20, USD billion Gross assets before netting Netting with gross liabilities 2 Net assets recognized on the balance sheet Financial liabilities Collateral received Assets after consideration of netting potential Assets recognized on the balance sheet Total assets after consideration of netting potential Total assets recognized on the balance sheet Receivables from securities financing transactions 70.3 (13.4) 57.0 (1.7) (55.3) 0.0 17.3 17.3 74.2 Derivative financial instruments 156.9 (5.0) 151.9 (117.2) (27.2) 7.5 7.7 15.2 159.6 Cash collateral receivables on derivative instruments 1 31.9 0.0 31.9 (19.6) (1.5) 10.8 0.8 11.6 32.7 Financial assets at fair value not held for trading 85.6 (79.1) 6.5 (0.8) (5.8) 0.0 73.9 73.9 80.4 of which: reverse repurchase agreements 85.6 (79.1) 6.5 (0.8) (5.8) 0.0 0.2 0.2 6.7 Total assets 344.8 (97.5) 247.3 (139.3) (89.8) 18.3 99.7 117.9 346.9 As of 31.12.19, USD billion Receivables from securities financing transactions 83.2 (14.0) 69.2 (1.2) (68.0) 0.0 15.0 15.0 84.2 Derivative financial instruments 120.2 (3.4) 116.8 (89.3) (21.4) 6.1 5.0 11.1 121.8 Cash collateral receivables on derivative instruments 1 26.4 (4.0) 22.4 (13.3) (1.1) 8.0 0.9 8.9 23.3 Financial assets at fair value not held for trading 83.1 (77.5) 5.6 0.0 (5.6) 0.0 78.3 78.3 83.9 of which: reverse repurchase agreements 83.0 (77.5) 5.4 0.0 (5.4) 0.0 0.9 0.9 6.3 Total assets 313.0 (98.9) 214.0 (103.8) (96.1) 14.1 99.3 113.4 313.3 1 The net amount of Cash collateral receivables on derivative instruments recognized on the balance sheet includes certain OTC derivatives that are net settled on a daily basis either legally or in substance under IAS 32 principles and exchange-traded derivatives that are economically settled on a daily basis. 2 The logic of the table results in amounts presented in the “Netting with gross liabilities” column corresponding directly to the amounts presented in the “Netting with gross assets” column in the liabilities table presented on the following page. Netting in this column for reverse repurchase agreements presented within the lines “Receivables from securities financing transactions” and “Financial assets at fair value not held for trading” taken together corresponds to the amounts presented for repurchase agreements in the “Payables from securities financing transactions” and “Other financial liabilities designated at fair value” lines in the liabilities table presented on the following page. 3 For the purpose of this disclosure, the amounts of financial instruments and cash collateral presented have been capped so as not to exceed the net amount of financial assets presented on the balance sheet; i.e., over-collateralization, where it exists, is not reflected in the table. 4 Includes assets not subject to enforceable netting arrangements and other out-of-scope items. The table below provides a summary of financial liabilities subject to offsetting, enforceable master netting arrangements and similar agreements, as well as financial collateral pledged to mitigate credit exposures for these financial liabilities. The gross financial liabilities of UBS that are subject to offsetting, enforce able netting arrangements and similar agreements are reconciled to the net amounts presented within the associated balance sheet line, after giving effect to financial assets with the same counterparties that have been offset on the balance sheet and other financial liabilities not subject to an enforceable netting arrangement or similar agreement. Furthermore, related amounts for financial assets and collateral pledged that are not offset on the balance sheet are shown so as to arrive at financial liabilit ies after consideration of netting potential . Financial liabilities subject to offsetting, enforceable master netting arrangements and similar agreements Liabilities subject to netting arrangements Netting recognized on the balance sheet Netting potential not recognized on the balance sheet 3 Liabilities not subject to netting arrangements 4 Total liabilities As of 31.12.20, USD billion Gross liabilities before netting Netting with gross assets 2 Net liabilities recognized on the balance sheet Financial assets Collateral pledged Liabilities after consideration of netting potential Liabilities recognized on the balance sheet Total liabilities after consideration of netting potential Total liabilities recognized on the balance sheet Payables from securities financing transactions 18.2 (13.3) 4.9 (1.6) (3.3) 0.0 1.4 1.4 6.3 Derivative financial instruments 157.1 (5.0) 152.1 (117.2) (23.9) 10.9 9.0 19.9 161.1 Cash collateral payables on derivative instruments 1 35.6 0.0 35.6 (19.6) (2.1) 13.9 1.7 15.7 37.3 Other financial liabilities designated at fair value 87.0 (79.2) 7.8 (0.8) (6.3) 0.7 22.6 23.3 30.4 of which: repurchase agreements 86.2 (79.2) 7.0 (0.8) (6.3) 0.0 0.3 0.3 7.3 Total liabilities 297.8 (97.5) 200.3 (139.2) (35.5) 25.6 34.8 60.4 235.1 As of 31.12.19, USD billion Payables from securities financing transactions 19.8 (14.0) 5.8 (0.8) (5.0) 0.0 2.0 2.0 7.8 Derivative financial instruments 118.1 (3.4) 114.8 (89.3) (16.8) 8.6 6.1 14.8 120.9 Cash collateral payables on derivative instruments 1 34.2 (4.0) 30.1 (16.5) (1.7) 12.0 1.3 13.3 31.4 Other financial liabilities designated at fair value 83.5 (77.6) 5.9 (0.4) (5.6) 0.0 30.0 30.0 35.9 of which: repurchase agreements 83.1 (77.6) 5.5 (0.4) (5.2) 0.0 0.2 0.2 5.7 Total liabilities 255.6 (98.9) 156.6 (107.0) (29.0) 20.6 39.4 60.0 196.0 1 The net amount of Cash collateral payables on derivative instruments recognized on the balance sheet includes certain OTC derivatives that are net settled on a daily basis either legally or in substance under IAS 32 principles and exchange-traded derivatives that are economically settled on a daily basis. 2 The logic of the table results in amounts presented in the “Netting with gross assets” column corresponding to the amounts presented in the “Netting with gross liabilities” column in the assets table presented on the previous page. Netting in this column for repurchase agreements presented within the lines “Payables from securities financing transactions” and “Other financial liabilities designated at fair value” taken together corresponds to the amounts presented for reverse repurchase agreements in the “Receivables from securities financing transactions” and “Financial assets at fair value not held for trading” lines in the assets table presented on the previous page. 3 For the purpose of this disclosure, the amounts of financial instruments and cash collateral presented have been capped so as not to exceed the net amount of financial liabilities presented on the balance sheet; i.e., over-collateralization, where it exists, is not reflected in the table. 4 Includes liabilities not subject to enforceable netting arrangements and other out-of-scope items.
UBS AG
Offsetting Financial Assets And Financial Liabilities [Line Items]
Disclosure Of Offsetting Of Financial Assets And Financial Liabilities Explanatory	Note 22 Offsetting financial assets and financial liabilities UBS AG enters into netting agreements with counterparties to manage the credit risks associated primarily with repurchase and reverse repurchase transactions, securities borrowing and lending, over-the-counter derivatives and exchange-traded derivatives. These n etting agreements and similar arrangements generally enable the counterparties to set off liabilities against available assets received in the ordinary course of business and / or in the event that the counterparties to the transaction are unable to fulfil l their contractual obligations. The right of setoff is a legal right to settle or otherwise eliminate all or a portion of an amount due by applying an amount receivable from the same counterparty against it, thus reducing credit exposure. The table below provides a summary of financial assets subject to offsetting, enforceable master netting arrangements and similar agreements, as well as financial collateral received to mitigate credit exposures for these financial assets. The gross financial assets of UB S AG that are subject to offsetting, enforceable netting arrangements and similar agreements are reconciled to the net amounts presented within the associated balance sheet line, after giving effect to financial liabilities with the same counterparties tha t have been offset on the balance sheet and other financial assets not subject to an enforceable netting arrangement or similar agreement , as well as other out-of-scope items . Furthermore , related amounts for financial liabilities and collateral received t hat are not offset on the balance sheet are shown so as to arrive at financial assets after consideration of netting potential. UBS AG engages in a variety of counterparty credit risk mitigation strategies in addition to netting and collateral arrangements . Therefore, the net amounts presented in the tables on this and on the next page do not purport to represent their actual credit risk exposure. Financial assets subject to offsetting, enforceable master netting arrangements and similar agreements Assets subject to netting arrangements Netting recognized on the balance sheet Netting potential not recognized on the balance sheet 3 Assets not subject to netting arrangements 4 Total assets As of 31.12.20, USD billion Gross assets before netting Netting with gross liabilities 2 Net assets recognized on the balance sheet Financial liabilities Collateral received Assets after consideration of netting potential Assets recognized on the balance sheet Total assets after consideration of netting potential Total assets recognized on the balance sheet Receivables from securities financing transactions 70.3 (13.4) 57.0 (1.7) (55.3) 0.0 17.3 17.3 74.2 Derivative financial instruments 156.9 (5.0) 151.9 (117.2) (27.2) 7.5 7.7 15.2 159.6 Cash collateral receivables on derivative instruments 1 31.9 0.0 31.9 (19.6) (1.5) 10.8 0.8 11.6 32.7 Financial assets at fair value not held for trading 85.6 (79.1) 6.5 (0.8) (5.8) 0.0 73.5 73.5 80.0 of which: reverse repurchase agreements 85.6 (79.1) 6.5 (0.8) (5.8) 0.0 0.2 0.2 6.7 Total assets 344.8 (97.5) 247.3 (139.3) (89.8) 18.3 99.3 117.6 346.6 As of 31.12.19, USD billion Receivables from securities financing transactions 83.2 (14.0) 69.2 (1.2) (68.0) 0.0 15.0 15.0 84.2 Derivative financial instruments 120.2 (3.4) 116.8 (89.3) (21.4) 6.1 5.0 11.1 121.8 Cash collateral receivables on derivative instruments 1 26.4 (4.0) 22.4 (13.3) (1.1) 8.0 0.9 8.9 23.3 Financial assets at fair value not held for trading 83.1 (77.5) 5.6 0.0 (5.6) 0.0 78.0 78.0 83.6 of which: reverse repurchase agreements 83.0 (77.5) 5.4 0.0 (5.4) 0.0 0.9 0.9 6.3 Total assets 313.0 (98.9) 214.0 (103.8) (96.1) 14.1 99.0 113.1 313.0 1 The net amount of Cash collateral receivables on derivative instruments recognized on the balance sheet includes certain OTC derivatives that are net settled on a daily basis either legally or in substance under IAS 32 principles and exchange-traded derivatives that are economically settled on a daily basis. 2 The logic of the table results in amounts presented in the “Netting with gross liabilities” column corresponding directly to the amounts presented in the “Netting with gross assets” column in the liabilities table presented on the following page. Netting in this column for reverse repurchase agreements presented within the lines “Receivables from securities financing transactions” and “Financial assets at fair value not held for trading” taken together corresponds to the amounts presented for repurchase agreements in the “Payables from securities financing transactions” and “Other financial liabilities designated at fair value” lines in the liabilities table presented on the following page. 3 For the purpose of this disclosure, the amounts of financial instruments and cash collateral presented have been capped so as not to exceed the net amount of financial assets presented on the balance sheet; i.e., over-collateralization, where it exists, is not reflected in the table. 4 Includes assets not subject to enforceable netting arrangements and other out-of-scope items. The table below provides a summary of financial liabilities subject to offsetting, enforceable master netting arrangements and similar agreements, as well as financial collateral pledged to mitigate credit exposures for these financial liabilities. The gro ss financial liabilities of UBS AG that are subject to offsetting, enforceable netting arrangements and similar agreements are reconciled to the net amounts presented within the associated balance sheet line, after giving effect to financial assets with th e same counterparties that have been offset on the balance sheet and other financial liabilities not subject to an enforceable netting arrangement or similar agreement. Furthermore, related amounts for financial assets and collateral pledged that are not o ffset on the balance sheet are shown so as to arrive at financial liabilities after consideration of netting potential . Financial liabilities subject to offsetting, enforceable master netting arrangements and similar agreements Liabilities subject to netting arrangements Netting recognized on the balance sheet Netting potential not recognized on the balance sheet 3 Liabilities not subject to netting arrangements 4 Total liabilities As of 31.12.20, USD billion Gross liabilities before netting Netting with gross assets 2 Net liabilities recognized on the balance sheet Financial assets Collateral pledged Liabilities after consideration of netting potential Liabilities recognized on the balance sheet Total liabilities after consideration of netting potential Total liabilities recognized on the balance sheet Payables from securities financing transactions 18.2 (13.3) 4.9 (1.6) (3.3) 0.0 1.4 1.4 6.3 Derivative financial instruments 157.1 (5.0) 152.1 (117.2) (23.9) 10.9 9.0 19.9 161.1 Cash collateral payables on derivative instruments 1 35.6 0.0 35.6 (19.6) (2.1) 13.9 1.7 15.7 37.3 Other financial liabilities designated at fair value 87.0 (79.2) 7.8 (0.8) (6.3) 0.7 24.0 24.7 31.8 of which: repurchase agreements 86.2 (79.2) 7.0 (0.8) (6.3) 0.0 0.3 0.3 7.3 Total liabilities 297.8 (97.5) 200.3 (139.2) (35.5) 25.6 36.2 61.7 236.5 As of 31.12.19, USD billion Payables from securities financing transactions 19.8 (14.0) 5.8 (0.8) (5.0) 0.0 2.0 2.0 7.8 Derivative financial instruments 118.1 (3.4) 114.8 (89.3) (16.8) 8.6 6.1 14.8 120.9 Cash collateral payables on derivative instruments 1 34.2 (4.0) 30.1 (16.5) (1.7) 12.0 1.3 13.3 31.4 Other financial liabilities designated at fair value 83.5 (77.6) 5.9 (0.4) (5.6) 0.0 30.2 30.2 36.2 of which: repurchase agreements 83.1 (77.6) 5.5 (0.4) (5.2) 0.0 0.2 0.2 5.7 Total liabilities 255.6 (98.9) 156.6 (107.0) (29.0) 20.6 39.6 60.2 196.2 1 The net amount of Cash collateral payables on derivative instruments recognized on the balance sheet includes certain OTC derivatives that are net settled on a daily basis either legally or in substance under IAS 32 principles and exchange-traded derivatives that are economically settled on a daily basis. 2 The logic of the table results in amounts presented in the “Netting with gross assets” column corresponding to the amounts presented in the “Netting with gross liabilities” column in the assets table presented on the previous page. Netting in this column for repurchase agreements presented within the lines “Payables from securities financing transactions” and “Other financial liabilities designated at fair value” taken together corresponds to the amounts presented for reverse repurchase agreements in the “Receivables from securities financing transactions” and “Financial assets at fair value not held for trading” lines in the assets table presented on the previous page. 3 For the purpose of this disclosure, the amounts of financial instruments and cash collateral presented have been capped so as not to exceed the net amount of financial liabilities presented on the balance sheet; i.e., over-collateralization, where it exists, is not reflected in the table. 4 Includes liabilities not subject to enforceable netting arrangements and other out-of-scope items.

Restricted financial assets

Restricted financial assets	12 Months Ended
Restricted financial assets	Dec. 31, 2020
Disclosure Restricted Financial Assets [Line Items]
Restricted Assets Disclosure Text Block	Note 23 Restricted and transferred financial assets This Note provides information about restricted financial assets (Note 23 a), transfers of financial assets (Note 23 b and 23 c) and financial assets that are received as collateral with the right to resell or repledge these assets (Note 23 d). a) Restricted financial assets Restricted financial asse ts consist of assets pledged as collateral against an existing liability or contingent liability and other assets that are otherwise explicitly restricted such that they cannot be used to secure funding. Financial assets are mainly pledged as collateral i n securities lending transactions, in repurchase transactions, against loans from Swiss mortgage institutions and in connection with the issuance of covered bonds. The Group generally enters into repurchase and securities lending arrangements under standar d market agreement s. For securities lending, the cash received as collateral may be more or less than the fair value of the securities l oaned, depending on the nature of the transaction . For repurchase agreements, the fair value of the collateral sold unde r an agreement to repurchase is generally in excess of the cash borrowed. Pledged mortgage loans serve as collateral for existing liabilities against Swiss central mortgage institutions and for existing covered bond issuances of USD 12,456 million as of 31 December 2020 ( 31 December 2019 : USD 11,206 million). Other restricted financial assets include assets protected under client asset segregation rules, assets held by the Group’s insurance entities to back related liabilities to the policy holders, assets held in certain jurisdictions to comply with explicit minimum local asset maintenance requirements and assets held in consolidated bankruptcy remote entities, such as certain investment funds and other structured entities. The carrying amount of the liabilities associated with these other restricted financial assets is generally equal to the carrying amount of the assets, with the exception of assets held to comply with local asset maintenance requirements , for which the associated liabilities are greater. Restricted financial assets USD million 31.12.20 31.12.19 Financial assets pledged as collateral Financial assets at fair value held for trading 64,367 56,415 of which: assets pledged as collateral that may be sold or repledged by counterparties 47,098 41,285 Loans and advances to customers 20,361 18,399 of which: mortgage loans 1 18,191 18,399 Financial assets at fair value not held for trading 2,140 188 of which: assets pledged as collateral that may be sold or repledged by counterparties 2,140 188 Debt securities classified as Other financial assets measured at amortized cost 2,506 1,212 of which: assets pledged as collateral that may be sold or repledged by counterparties 2,506 1,212 Financial assets measured at fair value through other comprehensive income 149 0 of which: assets pledged as collateral that may be sold or repledged by counterparties 149 0 Total financial assets pledged as collateral 2 89,523 76,215 Other restricted financial assets Loans and advances to banks 3,730 3,131 Financial assets at fair value held for trading 741 242 Cash collateral receivables on derivative instruments 3,765 2,986 Loans and advances to customers 756 620 Financial assets at fair value not held for trading 23,243 29,676 Financial assets measured at fair value through other comprehensive income 0 176 Other 110 379 Total other restricted financial assets 32,345 37,210 Total financial assets pledged and other restricted financial assets 121,868 113,425 1 All related to mortgage loans that serve as collateral for existing liabilities toward Swiss central mortgage institutions and for existing covered bond issuances. Of these pledged mortgage loans, approximately USD 2.7 billion for 31 December 2020 (31 December 2019: approximately USD 6.3 billion) could be withdrawn or used for future liabilities or covered bond issuances without breaching existing collateral requirements. 2 Does not include assets placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes (31 December 2020: USD 1.3 billion; 31 December 2019: USD 0.6 billion). In addition to restrictions on financial assets, UBS Group AG and its subsidiaries are, in certain cases, subject to regulatory requiremen ts that affect the transfer of dividends and capital within the Group , as well as intercompany lending . Supervisory authorities also may require entities to measure capital and leverage ratios on a stressed basis, such as the Federal Reserve Board’s Compre hensive Capital Analysis and Review (CCAR) process, which may limit the relevant subsidiaries’ ability to make distributions of capital based on the results of those tests. Supervisory authorities generally have discretion to impose higher requirements or to otherwise limit the activities of subsidiaries. Non-regulated subsidiaries are generally not subject to such requirements and transfer restrictions. However, restriction s can also be the result of different legal, regulatory, contractual, entity- or country-specific arrangements and / or requirements. › Refer to the “Financial and regulatory key figures for our significant regulated subsidiaries and sub-groups” section of t his report for financial information about significant regulated subsidiaries of the G roup
UBS AG
Disclosure Restricted Financial Assets [Line Items]
Restricted Assets Disclosure Text Block	Note 23 Restricted and transferred financial assets This Note provides information about restricted financial assets (Note 23 a), transfers of financial assets (Note 23 b and 23 c) and financial assets that are received as collateral with the right to resell or repledge these assets (Note 23 d). a) Restricted financial assets Restricted financial assets consist of assets pledged as collateral against an existing liability or contingent liability and other assets that are otherwise explicitly restricted such that they cannot be used to secure funding. Financial assets are mainl y pledged as collateral in securities lending transactions, in repurchase transactions, against loans from Swiss mortgage institutions and in connection with the issuance of covered bonds. UBS AG generally enters into repurchase and securities lending arra ngements under standard market agreement s. For securities lending, the cash received as collateral may be more or less than the fair value of the securities l oaned, depending on the nature of the transaction . For repurchase agreements, the fair value of th e collateral sold under an agreement to repurchase is generally in excess of the cash borrowed. Pledged mortgage loans serve as collateral for existing liabilities against Swiss central mortgage institutions and for existing covered bond issuances of USD 1 2,456 million as of 31 December 2020 ( 31 December 2019 : USD 11,206 million). Other restricted financial assets include assets protected under client asset segregation rules, assets held by UBS AG’s insurance entities to back related liabilities to the policy holders, assets held in certain jurisdictions to comply with explicit minimum local asset maintenance requirements and assets held in consolidated bankruptcy remote entities, such as certain investment funds and other structured entities. The carrying amou nt of the liabilities associated with these other restricted financial assets is generally equal to the carrying amount of the assets, with the exception of assets held to comply with local asset maintenance requirements , for which the associated liabiliti es are greater. Restricted financial assets USD million 31.12.20 31.12.19 Financial assets pledged as collateral Financial assets at fair value held for trading 64,418 56,548 of which: assets pledged as collateral that may be sold or repledged by counterparties 47,098 41,285 Loans and advances to customers 20,361 18,399 of which: mortgage loans 1 18,191 18,399 Financial assets at fair value not held for trading 2,140 188 of which: assets pledged as collateral that may be sold or repledged by counterparties 2,140 188 Debt securities classified as Other financial assets measured at amortized cost 2,506 1,212 of which: assets pledged as collateral that may be sold or repledged by counterparties 2,506 1,212 Financial assets measured at fair value through other comprehensive income 149 0 of which: assets pledged as collateral that may be sold or repledged by counterparties 149 0 Total financial assets pledged as collateral 2 89,574 76,347 Other restricted financial assets Loans and advances to banks 3,730 2,353 Financial assets at fair value held for trading 741 242 Cash collateral receivables on derivative instruments 3,765 2,986 Loans and advances to customers 756 620 Financial assets at fair value not held for trading 22,917 29,368 Financial assets measured at fair value through other comprehensive income 0 176 Other 110 382 Total other restricted financial assets 32,019 36,126 Total financial assets pledged and other restricted financial assets 121,593 112,474 1 All related to mortgage loans that serve as collateral for existing liabilities toward Swiss central mortgage institutions and for existing covered bond issuances. Of these pledged mortgage loans, approximately USD 2.7 billion for 31 December 2020 (31 December 2019: approximately USD 6.3 billion) could be withdrawn or used for future liabilities or covered bond issuances without breaching existing collateral requirements. 2 Does not include assets placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes (31 December 2020: USD 1.3 billion; 31 December 2019: USD 0.6 billion). In addition to restrictions on financial assets, UBS AG and its subsidiaries are, in certain cases, subject to regulatory requirem ents that affect the transfer of d ividends and capital within UBS AG, as well as intercompany lending . Supervisory authorities also may require entities to measure capital and leverage ratios on a stressed basis, such as the Federal Reserve Board’s Compreh ensive Capital Analysis and Review (CCAR) process, which may limit the relevant subsidiaries’ ability to make distributions of capital based on the results of those tests. Supervisory authorities generally have discretion to impose higher requirements or to otherwise limit the activities of subsidiaries. Non-regulated subsidiaries are generally not subject to such requirements and transfer restrictions. However, restrictions can also be the result of different legal, regulatory, contractual, entity- or country-specific arrangements and / or requirements. › › Refer to the “Financial and regulatory key figures for our significant regulated subsidiaries and sub-groups” section of this report for financial information about significant regulated subsidiaries of UBS AG

Transferred financial assets th

Transferred financial assets that are not derecognized in their entirety	12 Months Ended
	Dec. 31, 2020
Transferred Financial Assets That Are Not Derecognized In Their Entirety [Line Items]
Disclosure Of Transfers Of Financial Assets Explanatory	b) Transferred financial assets that are not derecognized in their entirety The table below presents information for financial assets that have been transferred but are subject to continued recognition in full, as well as recognized liabilities associated with those transferred assets. Transferred financial assets subject to continued recognition in full USD million 31.12.20 31.12.19 Carrying amount of transferred assets Carrying amount of associated liabilities recognized on balance sheet Carrying amount of transferred assets Carrying amount of associated liabilities recognized on balance sheet Financial assets at fair value held for trading that may be sold or repledged by counterparties 47,098 18,874 41,285 16,671 relating to securities lending and repurchase agreements in exchange for cash received 19,177 18,874 16,945 16,671 relating to securities lending agreements in exchange for securities received 27,595 0 24,082 0 relating to other financial asset transfers 326 0 258 0 Financial assets at fair value not held for trading that may be sold or repledged by counterparties 2,140 1,378 188 187 Debt securities classified as Other financial assets measured at amortized cost that may be sold or repledged by counterparties 1 2,506 1,963 1,212 690 Financial assets measured at fair value through other comprehensive income that may be sold or repledged by counterparties 149 148 0 0 Total financial assets transferred 1 51,893 22,363 42,685 17,548 1 Comparative information has been amended to include Debt securities classified as Other financial assets measured at amortized cost that may be sold or repledged by counterparties. Transactions in which financial assets are transferred, but continue to be recognized in their entirety on UBS’s balance sheet include securities lending and repurchase agreements , as well as other financial asset transfers. Repurchase and securities lending arrangements are, for the most part, conducted under standard market agreements and are und ertaken with counterparties subject to UBS’s normal credit risk control processes. › Refer to Note 1a item 2e for more information about repurchase and securities lending agreements As of 31 December 2020 , approximately 40% of the transferred financial assets were assets held for trading transferred in exchange for cash, in which case the associated recognized liability represents the amount to be repaid to counterparties. For securities lending and repurchase agreements, a haircut between 0% and 15% is generally applied to the transferred assets, which results in associated liabilities having a carrying amount below the carrying amount of the transferred assets. The counterparties to the associated liabilities presented in the table above have full r ecourse to UBS. In securities lending arrangements entered into in exchange for the receipt of other securities as collateral, neither the securities received nor the obligation to return them are recognized on UBS’s balance sheet, as the risks and rewards of ownership are not transferred to UBS. In cases where such financial assets received are subsequently sold or repledged in another transaction, this is not considered to be a transfer of financial assets. Other financial asset transfers primarily includ e securities transferred to collateralize derivative transactions, for which the carrying amount of associated liabilities is not provided in the table above , because those replacement values are managed on a portfolio basis across counterparties and produ ct types, and therefore there is no direct relationship between the specific collateral pledged and the associated liability. Transferred financial assets that are not subject to derecognition in full but remain on the balance sheet to the extent of the Gr oup’s continuing involvement were not material as of 31 December 2020 and as of 31 December 2019 .
UBS AG
Transferred Financial Assets That Are Not Derecognized In Their Entirety [Line Items]
Disclosure Of Transfers Of Financial Assets Explanatory	b) Transferred financial assets that are not derecognized in their entirety The table below presents information for financia l assets that have been transferred but are subject to continued recognition in full, as well as recognized liabilities associated with those transferred assets. Transferred financial assets subject to continued recognition in full USD million 31.12.20 31.12.19 Carrying amount of transferred assets Carrying amount of associated liabilities recognized on balance sheet Carrying amount of transferred assets Carrying amount of associated liabilities recognized on balance sheet Financial assets at fair value held for trading that may be sold or repledged by counterparties 47,098 18,874 41,285 16,671 relating to securities lending and repurchase agreements in exchange for cash received 19,177 18,874 16,945 16,671 relating to securities lending agreements in exchange for securities received 27,595 0 24,082 0 relating to other financial asset transfers 326 0 258 0 Financial assets at fair value not held for trading that may be sold or repledged by counterparties 2,140 1,378 188 187 Debt securities classified as Other financial assets measured at amortized cost that may be sold or repledged by counterparties 1 2,506 1,963 1,212 690 Financial assets measured at fair value through other comprehensive income that may be sold or repledged by counterparties 149 148 0 0 Total financial assets transferred 1 51,893 22,363 42,685 17,548 1 Comparative information has been amended to include Debt securities classified as Other financial assets measured at amortized cost that may be sold or repledged by counterparties. Transactions in which financial assets are transferred, but continue to be recognized in their entirety on UBS AG’s balance sheet include secur ities lending and repurchase agreements , as well as other financial asset transfers. Repurchase and securities lending arrangements are, for the most part, conducted under standard market agreements and are undertaken with counterparties subject to UBS AG’ s normal credit risk control processes. › Refer to Note 1a item 2e for more information about repurchase and securities lending agreements As of 31 December 2020 , approximately 40% of the transferred financial assets were assets held for trading transferred in exchange for cash, in which case the associated recognized liability represents the amount to be repaid to counterparties. For securities lending and repurchase agreements, a haircut between 0% and 15% is generally applied to the transferred assets, which results in associated liabilities having a carrying amount below the carrying amount of the transferred assets. The counterparties to the associated liabilities presented in t he table above have full recourse to UBS AG. In securities lending arrangements entered into in exchange for the receipt of other securities as collateral, neither the securities received nor the obligation to return them are recognized on UBS AG’s balance sheet, as the risks and rewards of ownership are not transferred to UBS AG. In cases where such financial assets received are subsequently sold or repledged in another transaction, this is not considered to be a transfer of financial assets. Other financi al asset transfers primarily include securities transferred to collateralize derivative transactions, for which the carrying amount of associated liabilities is not provided in the table above , because those replacement values are managed on a portfolio ba sis across counterparties and product types, and therefore there is no direct relationship between the specific collateral pledged and the associated liability. Transferred financial assets that are not subject to derecognition in full but remain on the ba lance sheet to the extent of UBS AG ’s continuing involvement were not material as of 31 December 2020 and as of 31 December 2019 .

Transferred financial assets _2

Transferred financial assets that are derecognized in their entirety with continuing involvement	12 Months Ended
	Dec. 31, 2020
Disclosure Transferred Financial Assets [Line Items]
Disclosure Of Continuing Involvement In Derecognised Financial Assets Explanatory	c) Transferred financial assets that are derecognized in their entirety with continuing involvement Continuing involvement in a transferred and fully derecognized financial asset may result from contractual provisions in the transfer agreement or from a se parate agreement with the counterparty or a third party entered into in connection with the transfer. T he fair value and carrying amount of UBS’s continuing involvement from transferred positions as of 31 December 2020 and 31 December 2019 was not materi al. Life to date losses reported in prior periods primarily relate to legacy positions in securitization vehicles which have been fully marked down, with no remaining exposure to loss .
UBS AG
Disclosure Transferred Financial Assets [Line Items]
Disclosure Of Continuing Involvement In Derecognised Financial Assets Explanatory	c) Transferred financial assets that are derecognized in their entirety with continuing involvement Continuing involvement in a transferred and fully derecognized financial asset may result from contractual provisions in the transfer agreement or from a s eparate agreement with the counterparty or a third party entered into in connection with the transfer. T he fair value and carrying amount of UBS’s continuing involvement from transferred positions as of 31 December 2020 and 31 December 2019 was not material. Life to date losses reported in prior periods primarily relate to legacy positions in securitization vehicles which have been fully marked down, with no remaining exposure to loss .

Off-balance sheet assets receiv

Off-balance sheet assets received	12 Months Ended
Off-balance sheet assets received	Dec. 31, 2020
Disclosure Off-balance Sheet Assets Received [Line Items]
Disclosure Of Off Balance Sheet Assets Received Text Block	d) Off-balance sheet assets received The table below presents assets received from third parties that can be sold or repledged and that are not recognized on the balance sheet, but that are held as collateral, including amounts that have been sold or repledged . Off-balance sheet assets received USD million 31.12.20 31.12.19 Fair value of assets received that can be sold or repledged 500,689 475,726 received as collateral under reverse repurchase, securities borrowing and lending arrangements, derivative and other transactions 1 487,904 466,045 received in unsecured borrowings 12,785 9,681 Thereof sold or repledged 2 367,258 350,477 in connection with financing activities 315,603 305,362 to satisfy commitments under short sale transactions 33,595 30,591 in connection with derivative and other transactions 1 18,059 14,524 1 Includes securities received as initial margin from its clients that UBS is required to remit to central counterparties, brokers and deposit banks through its exchange-traded derivative clearing and execution services. 2 Does not include off-balance sheet securities (31 December 2020: USD 18.9 billion; 31 December 2019: USD 19.6 billion) placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes for which there are no associated liabilities or contingent liabilities.
UBS AG
Disclosure Off-balance Sheet Assets Received [Line Items]
Disclosure Of Off Balance Sheet Assets Received Text Block	d) Off-balance sheet assets receive d The table below presents assets received from third parties that can be sold or repledged and that are not recognized on the balance sheet, but that are held as collateral, including amounts that have been sold or repledged . Off-balance sheet assets received USD million 31.12.20 31.12.19 Fair value of assets received that can be sold or repledged 500,689 475,726 received as collateral under reverse repurchase, securities borrowing and lending arrangements, derivative and other transactions 1 487,904 466,045 received in unsecured borrowings 12,785 9,681 Thereof sold or repledged 2 367,258 351,327 in connection with financing activities 315,603 306,212 to satisfy commitments under short sale transactions 33,595 30,591 in connection with derivative and other transactions 1 18,059 14,524 1 Includes securities received as initial margin from its clients that UBS AG is required to remit to central counterparties, brokers and deposit banks through its exchange-traded derivative clearing and execution services. 2 Does not include off-balance sheet securities (31 December 2020: USD 18.9 billion; 31 December 2019: USD 19.6 billion) placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes for which there are no associated liabilities or contingent liabilities.

Maturity analysis of financial

Maturity analysis of financial liabilities	12 Months Ended
Maturity analysis of financial liabilities	Dec. 31, 2020
Measurement Categories Credit Risk And Maturity Analysis Of Financial Instruments [Line Items]
Measurement categories, credit risk and maturity analysis of financial instruments [text block]	Note 24 Maturity analysis of financial liabilities The contractual maturities for non-derivative and non-trading financial liabilities as of 31 December 2020 are based on the earliest date on which UBS could be contractually required to pay. The total amounts that contractually mature in each time band are also shown for 31 December 2019. Derivative positions and trading liabilities, predominantly made up of s hort sale transactions, are assigned to the column Due within 1 month, as this provides a conservative reflection of the nature of these trading activities. The contractual maturities may extend over significantly longer periods Maturity analysis of financial liabilities 31.12.20 USD billion Due within 1 month Due between 1 and 3 months Due between 3 and 12 months Due between 1 and 5 years Due after 5 years Total Financial liabilities recognized on balance sheet 1 Amounts due to banks 6.1 2.4 2.1 0.5 0.0 11.1 Payables from securities financing transactions 5.6 0.4 0.3 0.0 0.0 6.3 Cash collateral payables on derivative instruments 37.3 37.3 Customer deposits 512.8 6.6 3.5 1.8 0.2 524.9 Debt issued measured at amortized cost 2 9.0 8.3 41.9 53.7 35.6 148.5 Other financial liabilities measured at amortized cost 4.5 0.1 0.5 2.0 1.8 8.9 of which: lease liabilities 0.1 0.1 0.5 2.0 1.8 4.5 Total financial liabilities measured at amortized cost 575.3 17.9 48.2 58.0 37.7 737.1 Financial liabilities at fair value held for trading 3,4 33.6 33.6 Derivative financial instruments 3,5 161.1 161.1 Brokerage payables designated at fair value 38.7 38.7 Debt issued designated at fair value 6 21.9 16.8 7.1 9.2 9.5 64.5 Other financial liabilities designated at fair value 27.9 0.6 0.6 0.7 1.1 30.9 Total financial liabilities measured at fair value through profit or loss 283.2 17.4 7.7 9.9 10.6 328.8 Total 858.5 35.3 56.0 67.9 48.3 1,065.9 Guarantees, commitments and forward starting transactions Loan commitments 7 40.5 0.5 0.4 0.0 41.4 Guarantees 17.5 17.5 Forward starting transactions, reverse repurchase and securities borrowing agreements 7 3.2 3.2 Total 61.3 0.5 0.4 0.0 0.0 62.2 31.12.19 USD billion Due within 1 month Due between 1 and 3 months Due between 3 and 12 months Due between 1 and 5 years Due after 5 years Total Financial liabilities recognized on balance sheet 1 Amounts due to banks 5.4 0.3 0.4 0.5 0.0 6.6 Payables from securities financing transactions 7.4 0.1 0.3 0.0 7.8 Cash collateral payables on derivative instruments 31.4 31.4 Customer deposits 423.0 16.1 7.3 2.5 0.0 448.9 Debt issued measured at amortized cost 2 4.5 5.3 30.5 46.3 36.0 122.7 Other financial liabilities measured at amortized cost 4.5 0.1 0.5 2.0 2.0 9.0 of which: lease liabilities 0.1 0.1 0.5 2.0 2.0 4.6 Total financial liabilities measured at amortized cost 476.1 22.0 38.9 51.3 38.1 626.4 Financial liabilities at fair value held for trading 3,4 30.6 30.6 Derivative financial instruments 3,5 120.9 120.9 Brokerage payables designated at fair value 37.2 37.2 Debt issued designated at fair value 6 21.3 17.4 9.5 12.7 7.6 68.5 Other financial liabilities designated at fair value 34.0 0.4 0.5 0.4 0.9 36.1 Total financial liabilities measured at fair value through profit or loss 244.0 17.8 9.9 13.1 8.5 293.3 Total 720.1 39.9 48.8 64.5 46.6 919.8 Guarantees, commitments and forward starting transactions Loan commitments 7 26.8 0.5 0.3 0.0 27.5 Guarantees 19.1 19.1 Forward starting transactions, reverse repurchase and securities borrowing agreements 7 1.6 0.0 1.7 Total 47.5 0.5 0.3 0.0 0.0 48.3 1 Except for financial liabilities at fair value held for trading and derivative financial instruments (see footnote 3), the amounts presented generally represent undiscounted cash flows of future interest and principal payments. 2 The time-bucket Due after 5 years includes perpetual loss-absorbing additional tier 1 capital instruments. 3 Carrying amount is fair value. Management believes that this best represents the cash flows that would have to be paid if these positions had to be settled or closed out. 4 Contractual maturities of financial liabilities at fair value held for trading are: USD 32.6 billion due within 1 month (2019: USD 30 billion), USD 1.0 billion due between 1 month and 1 year (2019: USD 0.6 billion) and USD 0 billion due between 1 and 5 years (2019: USD 0 billion). 5 Includes USD 32 million (2019: 0 million) related to fair values of derivative loan commitments and forward starting reverse repurchase agreements classified as derivatives, presented within “Due within 1 month”. The full contractual committed amount of USD 31.3 billion (2019: USD 26.6 billion) is presented in Note 10 under notional amounts. 6 Future interest payments on variable-rate liabilities are determined by reference to the applicable interest rate prevailing as of the reporting date. Future principal payments that are variable are determined by reference to the conditions existing at the reporting date. 7 Excludes derivative loan commitments and forward starting reverse repurchase agreements measured at fair value. The committed amounts of these instruments were previously presented in the former Note 34 (refer to the “Consolidated financial statements” section of the Annual Report 2019 for more information). Starting with this report, they are presented in Note 10 under notional amounts and prior-period information in this table has been amended to ensure comparability.
UBS AG
Measurement Categories Credit Risk And Maturity Analysis Of Financial Instruments [Line Items]
Measurement categories, credit risk and maturity analysis of financial instruments [text block]	Note 24 Maturity analysis of financial liabilities The contractual maturities for non-derivative and non-trading financial liabilities as of 31 December 20 20 are based on the earliest date on which UBS AG could be contractually required to pay. The total amounts that contractually mature in each time band are also shown for 31 December 201 9 . Derivative positions and trading liabilities, predominantly made up of short sale transactions, are assigned to the column Due within 1 month , as this provides a conservative reflection of the nature of these trading ac tivities. The contractual maturities may extend over significantly longer periods. Maturity analysis of financial liabilities 31.12.20 USD billion Due within 1 month Due between 1 and 3 months Due between 3 and 12 months Due between 1 and 5 years Due after 5 years Total Financial liabilities recognized on balance sheet 1 Amounts due to banks 6.1 2.4 2.1 0.5 0.0 11.1 Payables from securities financing transactions 5.6 0.4 0.3 0.0 0.0 6.3 Cash collateral payables on derivative instruments 37.3 37.3 Customer deposits 514.0 7.8 3.5 2.8 0.2 528.2 Funding from UBS Group AG and its subsidiaries 2 0.1 0.3 6.2 29.1 24.8 60.5 Debt issued measured at amortized cost 2 8.8 7.8 38.2 24.5 8.9 88.2 Other financial liabilities measured at amortized cost 5.3 0.1 0.5 2.0 1.8 9.6 of which: lease liabilities 0.1 0.1 0.5 2.0 1.8 4.4 Total financial liabilities measured at amortized cost 577.2 18.9 50.7 58.8 35.8 741.3 Financial liabilities at fair value held for trading 3,4 33.6 33.6 Derivative financial instruments 3,5 161.1 161.1 Brokerage payables designated at fair value 38.7 38.7 Debt issued designated at fair value 6 21.9 16.8 7.1 9.2 6.0 61.0 Other financial liabilities designated at fair value 27.9 0.6 0.6 0.7 4.6 34.3 Total financial liabilities measured at fair value through profit or loss 283.2 17.4 7.7 9.8 10.6 328.8 Total 860.3 36.3 58.4 68.6 46.4 1,070.0 Guarantees, commitments and forward starting transactions Loan commitments 7 40.5 0.5 0.4 0.0 41.4 Guarantees 17.5 17.5 Forward starting transactions, reverse repurchase and securities borrowing agreements 7 3.2 3.2 Total 61.3 0.5 0.4 0.0 0.0 62.2 31.12.19 USD billion Due within 1 month Due between 1 and 3 months Due between 3 and 12 months Due between 1 and 5 years Due after 5 years Total Financial liabilities recognized on balance sheet 1 Amounts due to banks 5.4 0.3 0.4 0.5 0.0 6.6 Payables from securities financing transactions 7.4 0.1 0.3 0.0 7.8 Cash collateral payables on derivative instruments 31.4 31.4 Customer deposits 423.9 16.5 7.3 3.5 0.0 451.2 Funding from UBS Group AG and its subsidiaries 2 0.0 0.2 2.3 29.0 24.6 56.2 Debt issued measured at amortized cost 2 4.3 4.7 27.8 20.7 9.0 66.5 Other financial liabilities measured at amortized cost 5.2 0.1 0.5 1.9 2.0 9.6 of which: lease liabilities 0.1 0.1 0.5 1.9 2.0 4.5 Total financial liabilities measured at amortized cost 477.6 22.0 38.5 55.6 35.6 629.3 Financial liabilities at fair value held for trading 3,4 30.6 30.6 Derivative financial instruments 3,5 120.9 120.9 Brokerage payables designated at fair value 37.2 37.2 Debt issued designated at fair value 6 21.3 17.4 9.5 12.7 7.1 68.0 Other financial liabilities designated at fair value 34.0 0.4 0.5 0.4 0.9 36.1 Total financial liabilities measured at fair value through profit or loss 244.0 17.8 9.9 13.1 8.0 292.9 Total 721.6 39.9 48.4 68.7 43.6 922.2 Guarantees, commitments and forward starting transactions Loan commitments 7 26.8 0.5 0.3 0.0 27.5 Guarantees 19.1 19.1 Forward starting transactions, reverse repurchase and securities borrowing agreements 7 1.6 0.0 1.7 Total 47.5 0.5 0.3 0.0 0.0 48.3 1 Except for financial liabilities at fair value held for trading and derivative financial instruments (see footnote 3), the amounts presented generally represent undiscounted cash flows of future interest and principal payments. 2 The time-bucket Due after 5 years includes perpetual loss-absorbing additional tier 1 capital instruments. 3 Carrying amount is fair value. Management believes that this best represents the cash flows that would have to be paid if these positions had to be settled or closed out. 4 Contractual maturities of financial liabilities at fair value held for trading are: USD 32.6 billion due within 1 month (2019: USD 30 billion), USD 1.0 billion due between 1 month and 1 year (2019: USD 0.6 billion) and USD 0 billion due between 1 and 5 years (2019: USD 0 billion). 5 Includes USD 32 million (2019: 0 million) related to fair values of derivative loan commitments and forward starting reverse repurchase agreements classified as derivatives, presented within “Due within 1 month.” The full contractual committed amount of USD 31.3 billion (2019: USD 26.6 billion) is presented in Note 10 under notional amounts. 6 Future interest payments on variable-rate liabilities are determined by reference to the applicable interest rate prevailing as of the reporting date. Future principal payments that are variable are determined by reference to the conditions existing at the reporting date. 7 Excludes derivative loan commitments and forward starting reverse repurchase agreements measured at fair value. The committed amounts of these instruments were previously presented in the former Note 34 (refer to the “Consolidated financial statements” section of the Annual Report 2019 for more information). Starting with this report, they are presented in Note 10 under notional amounts and prior-period information in this table has been amended to ensure comparability.

Hedge accounting

Hedge accounting	12 Months Ended
Hedge accounting	Dec. 31, 2020
Disclosure Of Hedge Accounting [Line Items]
Disclosure Of General Hedge Accounting Explanatory	Note 25 Hedge accounting Derivatives designated in hedge accounting relationships The Group applies hedge accounting to interest rate risk and foreign exchange risk including structural foreign exchange risk related to net investments in foreign operations. › Refer to “Market r isk” in the “Risk management and control” section of this report for more information about how ri sks arise and how they are managed by the Group Hedging instruments and hedged risk Interest rate swaps are designated in fair value hedges or cash flow hedges of interest rate risk arising solely from changes in benchmark interest rates. Fair value change s arising from such risk are usually the largest component of the overall change in the fair value of the hedged position in transaction currency. Cross-currency swaps are designated as fair value hedges of foreign exchange risk. FX forwards and FX swaps are mainly designated as hedges of structural foreign exchange risk related to net investments in foreign operations. In both cases the hedged risk arises solely from changes in spot foreign exchange rate. The notional of the designated hedging instrument s matches the notional of the hedged items, except when the interest rate swaps are re-designated in cash flow hedges , in which case the hedge ratio designated is determined based on the swap sensitivity. Hedged items and hedge designation Fair value hedg es of interest rate risk related to debt instruments Fair value hedges of interest rate risk related to debt instruments involve swapping fixed cash flows associated with the debt issued or debt securities held to floating cash flows by entering into interest rate swaps that receive fixed and pay floating cash flows or that pay fixed and receive floating cash flows, respectively. The variable future cash flows are based on the following benchmark rates: USD LIBOR, CHF LIBOR, EURIBOR, GBP LIBOR, AUD LIBOR, JPY LIBOR and SGD LIBOR. Fair value hedges of portfolio interest rate risk related to loans designated under IAS 39 The Group hedges an open portfolio of long-term fixed-rate mortgage loans in CHF using in terest rate swaps that pay a fixed rate of interest and receive a floating rate of interest. Both the hedged portfolio and the hedging instruments are adjusted on a monthly basis to reflect changes in size and the maturity profile of the hedged portfolio. The existing hedge relationship is discontinued and a new one is designated. Changes in the portfolio are driven by new loans originated or existing loans repaid . Cash flow hedges of forecast transactions The Group hedges forecast cash flows on non-trading financial assets and liabilities that bear interest at variable rates or are expected to be refinanced or reinvested in the future, due to movements in future market rates. The amounts and timing of future cash flows, representing both principal and inter est flows, are projected on the basis of contractual terms and other relevant factors, including estimates of prepayments and defaults. The aggregate principal balances and interest cash flows across all portfolios over time form the basis for identifying the non-trading interest rate risk of the Group, which is hedged with interest rate swaps, the maximum maturity of which is 10 years. Cash flow forecasts and risk exposures are monitored and adjusted on an ongoing basis, and consequently additional hedging instruments are traded and designated , or are alternatively terminated resulting in a hedge discontinuance. Fair value hedges of foreign exchange risk related to debt instruments Debt instruments denominated in currencies other than the US dollar are desi gnated in fair value hedges of spot foreign exchange risk, in addition to and separate from the fair value hedges of interest rate risk. Cross - currency swaps economically convert debt denominated in currencies other than the US dollar to US dollars . This h edge accounting program started on 1 January 2020 , with the adoption of the hedge accounting requirements of IFRS 9, Financial Instruments , by UBS. › Refer to Note 1b for more information Hedges of net investments in foreign operations The Group applies hedge accounting for certain net investments in foreign operations , which include subsidiaries, branches and associates. Upon maturity of hedging instruments, typically two months, the hedge relationship is terminated and new designations are made to reflect any changes in the net investments in foreign operations. Economic relationship between hedged item and hedging instrument For hedges designated under IFRS 9, the economic relationship between the hedged item and the hedging instrument is determined based on a qualitative analysis of their critical terms. In cases where hedge designation takes place after origination of the hedgi ng instrument, a quantitative analysis of the possible behavior of hedging derivative and the hedged item during their respective terms is also performed. For the fair value hedge of portfolio interest rate risk related to loans, designated under IAS 39, h edge effectiveness is assessed by comparing changes in the fair value of the hedged portfolio of loans attributable to changes in the designated benchmark interest rate with the changes in the fair value of the interest rate swaps. Sources of hedge ineffec tiveness In hedges of interest rate risk , hedge ineffectiveness can arise from mismatches of critical terms and / or the use of different curves to discount the hedged item and instrument, or from entering into a hedge relationship after the trade date of the hedging derivative . In hedges of foreign exchange risk related to debt issued , hedge ineffectiveness can arise due to the discounting of the hedging instruments and undesignated risk components and lack of such discounting and risk components in the hedged items. In hedges of net investments in foreign operations , ineffectiveness is unlikely unless the hedged net assets fall below the designated hedged amount. The exceptions are hedges where the hedging currency is not the same as the currency of the foreign operation, where the currency basis may cause ineffectiveness. Derivatives not designated in hedge accounting relationships Non-hedge accounted derivatives are mandatorily held for trading with all fair value movements t aken to Other net i ncome from financial instruments measured at fair value through profit or loss , even when held as an economic hedge or to facilitate client clearing. The one exception relates to forward points on certain short- and long-duration foreign exchange contracts acting as economic hedges, which are reported in Net interest income All hedges: designated hedging instruments and hedge ineffectiveness As of or for the year ended 31.12.20 Carrying amount USD million Notional amount Derivative financial assets Derivative financial liabilities Changes in fair value of hedging instruments 1 Changes in fair value of hedged items 1 Hedge ineffectiveness recognized in Other net income from financial instruments measured at fair value through profit or loss Interest rate risk Fair value hedges 80,759 12 1,231 (1,247) (16) Cash flow hedges 72,732 18 2,213 (2,012) 201 Foreign exchange risk Fair value hedges 2,3 21,555 449 7 (1,735) 1,715 (20) Hedges of net investments in foreign operations 13,775 3 194 (937) 936 (2) As of or for the year ended 31.12.19 Carrying amount USD million Notional amount Derivative financial assets Derivative financial liabilities Changes in fair value of hedging instruments 1 Changes in fair value of hedged items 1 Hedge ineffectiveness recognized in Other net income from financial instruments measured at fair value through profit or loss Interest rate risk Fair value hedges 69,750 33 14 1,389 (1,376) 13 Cash flow hedges 69,443 16 1,639 (1,571) 68 Foreign exchange risk Hedges of net investments in foreign operations 11,992 9 171 (142) 134 (8) 1 Amounts used as the basis for recognizing hedge ineffectiveness for the period. 2 Fair value hedges of foreign exchange risk started on 1 January 2020. 3 The foreign currency basis spread of cross-currency swaps designated as hedging derivatives is excluded from the hedge accounting designation and accounted for as a cost of hedging with amounts deferred in Other comprehensive income within Equity. Fair value hedges: designated hedged items USD million 31.12.20 31.12.19 Interest rate risk FX risk 2 Interest rate risk Debt issued measured at amortized cost Carrying amount of designated debt issued 70,429 21,555 67,379 of which: accumulated amount of fair value hedge adjustment 2,401 1,099 Other financial assets measured at amortized cost – debt securities Carrying amount of designated debt securities 3,242 of which: accumulated amount of fair value hedge adjustment (38) Loans and advances to customers designated in fair value hedges of portfolio interest rate risk under IAS 39 Carrying amount of designated loans 10,374 4,494 of which: accumulated amount of fair value hedge adjustment on the portfolio that was subject to hedge accounting 1 100 117 of which: accumulated amount of fair value hedge adjustment subject to amortization attributable to the portion of the portfolio that ceased to be part of hedge accounting 1 111 172 1 Amounts presented within Other financial assets measured at amortized cost and Other financial liabilities measured at amortized cost. 2 Fair value hedges of foreign exchange risk started on 1 January 2020. Fair value hedges related to debt issued and debt securities: profile of the timing of the nominal amount of the hedging instrument 31.12.20 USD billion Due within 1 month Due between 1 and 3 months Due between 3 and 12 months Due between 1 and 5 years Due after 5 years Total Interest rate swaps 0 4 9 46 12 70 Cross-currency swaps 1 0 0 4 16 2 22 31.12.19 USD billion Due within 1 month Due between 1 and 3 months Due between 3 and 12 months Due between 1 and 5 years Due after 5 years Total Interest rate swaps 3 9 40 14 65 1 Fair value hedges of foreign exchange risk using cross-currency swaps started on 1 January 2020. Cash flow hedge reserve on a pre-tax basis USD million 31.12.20 31.12.19 Amounts related to hedge relationships for which hedge accounting continues to be applied 2,560 1,596 Amounts related to hedge relationships for which hedge accounting is no longer applied 296 (43) Total other comprehensive income recognized directly in equity related to cash flow hedges, on a pre-tax basis 2,856 1,553 Foreign currency translation reserve on a pre-tax basis USD million 31.12.20 31.12.19 Amounts related to hedge relationships for which hedge accounting continues to be applied (559) 386 Amounts related to hedge relationships for which hedge accounting is no longer applied 268 257 Total other comprehensive income recognized directly in equity related to hedging instruments designated as net investment hedges, on a pre-tax basis (291) 643 Interest rate benchmark reform The Group continues to apply the relief provided by Interest Rate Benchmark Reform ( amendments to IFRS 9, IAS 39 and IFRS 7 ), published by the IASB in September 2019. The inter est rate benchmarks subject to i nterest r ate b enchmark reforms to which the Group’s hedge relationships are exposed are USD LIBOR, CHF LIBOR, GBP LIBOR, AUD LIBOR, JPY LIBOR, HKD LIBOR, SGD LIBOR and EONIA . Existing financial instruments designated in hedge relationships referencing these interest rate benchmarks will transition to alternative reference rates (ARRs) unless they mature before the transition takes place. The Group’s hedge relationsh ips are also exposed to Euro Inter - bank Offered Rate (EURIBOR) , for which there is no uncertainty arising from the interest rate benchmark reform. EURIBOR is expected to continue to exist as a benchmark rate for the foreseeable future. Thus, the Group does not consider its hedges involving the EURIBOR benchmark interest rate to be directly affected by the interest rate benchmark reform. The Group established a cross-divisional, cross-regional governance structure and change program to address the scale and complexity of this transition. Apart from EURIBOR hedges, UBS applies the relief to all its fair value hedges of interest rate risk and to those cash flow hedge relationships where the hedged risk is LIBOR or EONIA. The following table provides details on the no tio nal amount and carrying amount of the hedging instruments in those hedge relationships maturing after 31 December 2021 or 30 June 2023 for USD LIBOR hedges, which are the expected cessation dates of the applicable interest rate benchmarks. The co mparative information in the table below has been amended to consistently reflect this approach. Hedges of net investments in foreign operations are not affected by the amendments. › R efer to Note 1a item 2j for more information about the relief provided by the amendments to IFRS 9, IAS 39 and IFRS 7 related to interest rate benchmark reform Hedging instruments referencing LIBOR 31.12.20 31.12.19 Carrying amount Carrying amount USD million Notional amount Derivative financial assets Derivative financial liabilities Notional amount Derivative financial assets Derivative financial liabilities Interest rate risk Fair value hedges 37,146 1 (12) 26,355 1 (14) Cash flow hedges 11,179 0 0 5,895 0 0
UBS AG
Disclosure Of Hedge Accounting [Line Items]
Disclosure Of General Hedge Accounting Explanatory	Note 25 Hedge accounting Derivatives designated in hedge accounting relationships UBS AG applies hedge accounting to interest rate risk and foreign exchange risk including structural foreign exchange risk related to net investments in foreign operations. › Refer to “Market risk” in the “R isk management and control” section of this report for more information about how risks arise and how they are managed by the UBS AG Hedging instruments and hedged risk Interest rate swaps are designated in fair value hedges or cash flow hedges of interest rate risk arising solely from changes in benchmark interest rates. Fai r value changes arising from such risk are usually the largest component of the overall change in the fair value of the hedged position in transaction currency. Cross-currency swaps are designated as fair value hedges of foreign exchange risk. FX forwards and FX swaps are mainly designated as hedges of structural foreign exchange risk related to net investments in foreign operations. In both cases the hedged risk arises solely from changes in spot foreign exchange rate. The notional of the designated hedg ing instruments matches the notional of the hedged items, except when the interest rate swaps are re-designated in cash flow hedges , in which case the hedge ratio designated is determined based on the swap sensitivity. Hedged items and hedge designation Fair value hedges of interest rate risk related to debt instruments Fair value hedges of interest rate risk related to debt instruments involve swapping fixed cash flows associated with the debt issued or debt securities held to floating cash flows by entering into interest rate swaps that receive fixed and pay floating cash flows or that pay fixed and receive floating cash flows, respectively. The variable future cash flows are based on the following benchmark rates: USD LIBOR, CHF LIBOR, EURIBOR, GBP LIBOR, AUD LIBOR, JPY LIBOR and SGD LIBOR. Fair value hedges of portfolio interest rate risk related to loans designated under IAS 39 UBS AG hedges an open portfolio of long-term fixed-rate mortgage loans in CHF using inter est rate swaps that pay a fixed rate of interest and receive a floating rate of interest. Both the hedged portfolio and the hedging instruments are adjusted on a monthly basis to reflect changes in size and the maturity profile of the hedged portfolio. The existing hedge relationship is discontinued and a new one is designated. Changes in the portfolio are driven by new loans originated or existing loans repaid . Cash flow hedges of forecast transactions UBS AG hedges forecast cash flows on non-trading finan cial assets and liabilities that bear interest at variable rates or are expected to be refinanced or reinvested in the future, due to movements in future market rates. The amounts and timing of future cash flows, representing both principal and interest fl ows, are projected on the basis of contractual terms and other relevant factors, including estimates of prepayments and defaults. The aggregate principal balances and interest cash flows across all portfolios over time form the basis for identifying the no n-trading interest rate risk of UBS AG , which is hedged with interest rate swaps, the maximum maturity of which is 10 years. Cash flow forecasts and risk exposures are monitored and adjusted on an ongoing basis, and consequently additional hedging instrume nts are traded and designated , or are alternatively terminated resulting in a hedge discontinuance. Fair value hedges of foreign exchange risk related to debt instruments Debt instruments denominated in currencies other than the US dollar are designated in fair value hedges of spot foreign exchange risk, in addition to and separate from the fair value hedges of interest rate risk. Cross currency swaps economically convert debt denominated in currencies other than the US dollar to US dollars . This hedge acco unting program started on 1 January 2020 , with the adoption of the hedge accounting requirements of IFRS 9, Financial Instruments , by UBS. › Refer to Note 1b for more information Hedges of net investments in foreign operations UBS AG applies hedge accounting for certain net investments in foreign operations , which include subsidiaries, branches and associates. Upon maturity of hedging instruments, typically two months, the hedge relationship is terminated and new designations are made to reflect any changes in the net investments in foreign operations. Economic relationship between hedged item and hedging instru ment For hedges designated under IFRS 9, the economic relationship between the hedged item and the hedging instrument is determined based on a qualitative analysis of their critical terms. In cases where hedge designation takes place after origination of t he hedging instrument, a quantitative analysis of the possible behavior of hedging derivative and the hedged item during their respective terms is also performed. For the fair value hedge of portfolio interest rate risk related to loans, designated under I AS 39, hedge effectiveness is assessed by comparing changes in the fair value of the hedged portfolio of loans attributable to changes in the designated benchmark interest rate with the changes in the fair value of the interest rate swaps. Sources of hedge ineffectiveness In hedges of interest rate risk , hedge ineffectiveness can arise from mismatches of critical terms and / or the use of different curves to discount the hedged item and instrument, or from entering into a hedge relationship after the trade date of the hedging derivative . In hedges of foreign exchange risk related to debt issued , hedge ineffectiveness can arise due to the discounting of the hedging instruments and undesignated risk components and lack of such discounting and risk components in the hedged items. In hedges of net investments in foreign operations , ineffectiveness is unlikely unless the hedged net assets fall below the designated hedged amount. The exceptions are hedges where the hedging currency is not the same as the currenc y of the foreign operation, where the currency basis may cause ineffectiveness. Derivatives not designated in hedge accounting relationships Non-hedge accounted derivatives are mandatorily held for trading with all fair value mov ements taken to Other net i ncome from financial instruments measured at fair value through profit or loss , even when held as an economic hedge or to facilitate client clearing. The one exception relates to forward points on certain short- and long-duration for eign exchange contracts acting as economic hedges, which are reported in Net interest income All hedges: designated hedging instruments and hedge ineffectiveness As of or for the year ended 31.12.20 USD million Notional amount Carrying amount Changes in fair value of hedging instruments 1 Changes in fair value of hedged items 1 Hedge ineffectiveness recognized in Other net income from financial instruments measured at fair value through profit or loss Derivative financial assets Derivative financial liabilities Interest rate risk Fair value hedges 80,759 12 1,231 (1,247) (16) Cash flow hedges 72,732 18 2,213 (2,012) 201 Foreign exchange risk Fair value hedges 2,3 21,555 449 7 (1,735) 1,715 (20) Hedges of net investments in foreign operations 13,634 3 193 (939) 938 (2) As of or for the year ended 31.12.19 USD million Notional amount Carrying amount Changes in fair value of hedging instruments 1 Changes in fair value of hedged items 1 Hedge ineffectiveness recognized in Other net income from financial instruments measured at fair value through profit or loss Derivative financial assets Derivative financial liabilities Interest rate risk Fair value hedges 69,750 33 14 1,389 (1,376) 13 Cash flow hedges 69,443 16 1,639 (1,571) 68 Foreign exchange risk Hedges of net investments in foreign operations 11,875 9 170 (153) 144 (8) 1 Amounts used as the basis for recognizing hedge ineffectiveness for the period. 2 Fair value hedges of foreign exchange risk started on 1 January 2020. 3 The foreign currency basis spread of cross-currency swaps designated as hedging derivatives is excluded from the hedge accounting designation and accounted for as a cost of hedging with amounts deferred in Other comprehensive income within Equity. Fair value hedges: designated hedged items USD million 31.12.20 31.12.19 Interest rate risk FX risk 2 Interest rate risk Debt issued measured at amortized cost Carrying amount of designated debt issued 24,247 10,889 26,120 of which: accumulated amount of fair value hedge adjustment 761 574 Funding from UBS Group AG and its subsidiaries Carrying amount of designated debt instruments 46,182 10,666 41,258 of which: accumulated amount of fair value hedge adjustment 1,640 525 Other financial assets measured at amortized cost – debt securities Carrying amount of designated debt securities 3,242 of which: accumulated amount of fair value hedge adjustment (38) Loans and advances to customers designated in fair value hedges of portfolio interest rate risk under IAS 39 Carrying amount of designated loans 10,374 4,494 of which: accumulated amount of fair value hedge adjustment on the portfolio that was subject to hedge accounting 1 100 117 of which: accumulated amount of fair value hedge adjustment subject to amortization attributable to the portion of the portfolio that ceased to be part of hedge accounting 1 111 172 1 Amounts presented within Other financial assets measured at amortized cost and Other financial liabilities measured at amortized cost. 2 Fair value hedges of foreign exchange risk started on 1 January 2020. Fair value hedges related to debt issued and debt securities: profile of the timing of the nominal amount of the hedging instrument 31.12.20 USD billion Due within 1 month Due between 1 and 3 months Due between 3 and 12 months Due between 1 and 5 years Due after 5 years Total Interest rate swaps 0 4 9 46 12 70 Cross-currency swaps 1 0 0 4 16 2 22 31.12.19 USD billion Due within 1 month Due between 1 and 3 months Due between 3 and 12 months Due between 1 and 5 years Due after 5 years Total Interest rate swaps 3 9 40 14 65 1 Fair value hedges of foreign exchange risk using cross-currency swaps started on 1 January 2020. Cash flow hedge reserve on a pre-tax basis USD million 31.12.20 31.12.19 Amounts related to hedge relationships for which hedge accounting continues to be applied 2,560 1,596 Amounts related to hedge relationships for which hedge accounting is no longer applied 296 (43) Total other comprehensive income recognized directly in equity related to cash flow hedges, on a pre-tax basis 2,856 1,554 Foreign currency translation reserve on a pre-tax basis USD million 31.12.20 31.12.19 Amounts related to hedge relationships for which hedge accounting continues to be applied (569) 377 Amounts related to hedge relationships for which hedge accounting is no longer applied 268 257 Total other comprehensive income recognized directly in equity related to hedging instruments designated as net investment hedges, on a pre-tax basis (302) 634 Interest rate benchmark reform UBS AG continues to apply the relief provided by Interest Rate Benchmark Reform (amendments to IFRS 9, IAS 39 and IFRS 7), published by the IASB in September 2019. The interest rate benchmarks subject to interest rate benchmark reforms to which UBS AG’s hedge relationships are exposed are USD LIBOR, CHF LIBOR, GBP LIBOR, AUD LIBOR, JPY LIBOR, HKD LIBOR, SGD LIBOR and EONIA. Existing financial instruments designated in hedge relationships referencing these interest rate benchmarks will transition to alternative reference rates (ARRs) unless they mature before the transition takes plac e. UBS AG’s hedge relationships are also exposed to Euro Inter-bank Offered Rate (EURIBOR), for which there is no uncertainty arising from the interest rate benchmark reform. EURIBOR is expected to continue to exist as a benchmark rate for the foreseeable future. Thus, UBS AG does not consider its hedges involving the EURIBOR benchmark interest rate to be directly affected by the interest rate benchmark reform. UBS AG established a cross-divisional, cross-regional governance structure and change program to address the scale and complexity of this transition. Apart from EURIBOR hedges, UBS AG applies the relief to all its fair value hedges of interest rate risk and to those cash flow hedge relationships where the hedged risk is LIBOR or EONIA. The following table provides details on the notional amount and carrying amount of the hedging instruments in those hedge relationships maturing after 31 December 2021 or 30 June 2023 for USD LIBOR hedges, which are the expected cessation dates of the applicab le interest rate benchmarks. The comparative information in the table below has been amended to consistently reflect this approach. Hedges of net investments in foreign operations are not affected by the amendments. › Refer to Note 1a item 2j for more inform ation about the relief provided by the amendments to IFRS 9, IAS 39 and IFRS 7 related to interest rate benchmark reform Hedging instruments referencing LIBOR 31.12.20 31.12.19 Carrying amount Carrying amount USD million Notional amount Derivative financial assets Derivative financial liabilities Notional amount Derivative financial assets Derivative financial liabilities Interest rate risk Fair value hedges 37,146 1 (12) 26,355 1 (14) Cash flow hedges 11,179 0 0 5,895 0 0

Post-employment benefit plans

Post-employment benefit plans	12 Months Ended
Post-employment benefit plans	Dec. 31, 2020
Disclosure Post-employment Benefit Plans [Line Items]
Post-employment benefit plans [text block]	Note 26 Post-employment benefit plans The table below provides a breakdown of expenses related to pension and other post-employment benefit plans recognized in the income statement within Personnel expenses . Income statement – expenses related to post-employment benefit plans USD million 31.12.20 31.12.19 31.12.18 Net periodic expenses for defined benefit plans 502 461 188 of which: related to major plans 1 479 440 186 of which: Swiss pension plan 2 459 417 153 of which: UK pension plan 3 3 11 of which: US and German pension plans 18 21 22 of which: related to remaining plans and other expenses 3 23 21 2 Expenses for defined contribution plans 4 343 326 268 of which: UK plans 88 82 80 of which: US plan 190 173 127 of which: remaining plans 65 71 61 Total post-employment benefit plan expenses 5 845 787 457 1 Refer to Note 26a for more information. 2 Changes to the Swiss pension plan announced in 2018 resulted in a pre-tax gain of USD 241 million related to past service. Refer to Note 26a for more information on these changes. 3 Other expenses include differences between actual and estimated performance award accruals. 4 Refer to Note 26b for more information. 5 Refer to Note 6. The table below provides a breakdown of amounts recognized in Other comprehensive income for defined benefit plans. Other comprehensive income – gains / (losses) on defined benefit plans USD million 31.12.20 31.12.19 31.12.18 Major plans 1 (323) (135) (230) of which: Swiss pension plan (276) (22) (352) of which: UK pension plan (61) (78) 130 of which: US and German pension plans 14 (35) (8) Remaining plans (4) (10) 9 Gains / (losses) recognized in other comprehensive income, before tax (327) (146) (220) Tax (expense) / benefit relating to defined benefit plans recognized in other comprehensive income 109 (41) 276 Gains / (losses) recognized in other comprehensive income, net of tax 2 (218) (186) 56 1 Refer to Note 26a for more information. 2 Refer to the “Statement of comprehensive income.” The table below provides a breakdown of the assets and liabilities recognized on the balance sheet within O ther non-financial assets and Other non-financial liabilities relate d to defined benefit plans. Balance sheet – net defined benefit asset USD million 31.12.20 31.12.19 Major plans 1 42 9 of which: Swiss pension plan 2 0 0 of which: UK pension plan 0 4 of which: US and German pension plans 42 5 Total net defined benefit asset 42 9 1 Refer to Note 26a for more information. 2 As of 31 December 2020 and 31 December 2019, the Swiss pension plan was in a surplus situation. No net defined benefit asset was recognized on the balance sheet due to the IFRS asset ceiling restriction. Refer to Note 26a for more information. Balance sheet – net defined benefit liability USD million 31.12.20 31.12.19 Major plans 1 599 527 of which: UK pension plan 13 0 of which: US and German pension plans 2 586 527 Remaining plans 123 107 Total net defined benefit liability 3 722 633 1 Refer to Note 26a for more information. 2 Of the total liability recognized as of 31 December 2020, USD 88 million related to US plans and USD 498 million related to German plans (31 December 2019: USD 111 million and USD 416 million, respectively). 3 Refer to Note 19c. a) Defined be nefit plans UBS has established defined benefit plans for its employees in various jurisdictions in accordance with local regulations and practices . T he major plans are located in Switzerland, the UK, the US and Germany. The level of benefits depends on the specific plan rules . For the funded plans, the plan assets are invested in a diversified portfolio of financial assets. Volatility arises in each plan’s net asset / liability position because the fair value of the plan’s financial assets is not fully correlated to movements in the value of the plan’s defined benefit obligation ( DBO ) . UBS ’ s general principle is to ensure that the plans are adequately funded on the basis of actuarial valuations. Local pension regulations are the primary drivers for determining when contributions are required. Swiss pension plan The Swiss pension plan covers employees of UBS AG and employees of companies having close economic or finan cial ties with UBS AG, and exceeds the minimum benefit requirements under Swiss pension law. The Swiss plan offers retirement, disability and survivor benefits and is governed by a Pension Foundation Board. The responsibilities of this board are defined by Swiss pension law and the plan rules. Savings c ontributions to the Swiss plan are paid by both employer and employee. Depending on the age of the employee, UBS pays a savings contribution that ranges between 6.5% and 27.5% of contributory base salary and between 2 . 8 % and 9% of contributory variable compensation. UBS also pays risk contributions that are used to fund disability and survivor benefits. Employees can choose the level of savings contributions paid by them , which vary between 2.5% and 13.5% of c ontributory base salary and between 0% and 9% of contributory variable compensation, depending on age and choice of savings contribution category. The plan offers to members at the normal retirement age of 6 5 a choice between a lifetime pension and a partial or full lump sum payment. Participants can choose to draw early retirement benefits starting from the age of 58, but can also continue employment and remain active members of the plan until the age of 70 . Employees have the opportunity to make additional purchases of benefits to fund early retirement benefits . The pension amount payable to a participant is calculated by applying a conversion rate to the accumulated balance of the participant’s retirement savings account at the retirement date. The balance is based on credited vested benefits transferred from previous employers, purchases of benefits, and the employee and employer contributions that ha ve been made to the participant ’ s retirement savings account, as well as the interest accrued . The interest rate is defined annually by the Pension Foundation Board. Although the Swiss plan is based on a defined contribution promise under Swiss pension law , it is accounted for as a defined benefit plan under IFRS, primarily because of the obligation to accrue interest on the participants ’ retirement savings accounts and the payment of lifetime pension benefits. An actuarial valuation in accordance with Swi ss pension law is performed regularly. S hould an underfunded situation on this basis occur, the Pension Foundation Board is required to take the necessary measures to ensure that full funding can be expected to be restored within a maximum period of 10 yea rs. If a Swiss plan were to become significantly underfunded on a Swiss pension law basis, additional employer and employee contributions could be required. In this situation, the risk is shared between employer and employees, and the employer is not legal ly obliged to cover more than 50% of the additional contributions required. As of 31 December 2020 , the Swiss plan had a technical funding ratio under Swiss pension law of 132 . 6% (31 December 2019: 127.1 %). The investment strategy of the Swiss plan complies with Swiss pension law, including the rules and regulations relating to diversification of plan assets. These rules, among others, specify restrictions on the composition of plan assets; e.g., there is a limit of 50% for investments in equities. The investment strategy of the Swiss plan is aligned with the defined risk budget set out by the Pension Foundation Board. The risk budget is determined on the basis of regularly performed asset and liability management analyses. In order to implement the risk budget, the Swiss plan may use direct investments, investment funds and derivatives. To mitigate foreign currency risk, a specific currency hedging strategy is in place. The Pension Foundation Board strives for a medium- and long-term balance between assets and liabilities. As of 31 December 2020, the Swiss plan was in a surplus situation on an IFRS measurement basis, as the fair value of the plan’s assets exceeded the DBO by USD 4 , 862 million (31 December 2019: a surplus of USD 3,724 million). However, a surplus is only recognized on the balance sheet to the extent that it does not exceed the estimated future economic benefit, which equals the difference between the present value of the estimated future net service cost and t he present value of the estimated future employer contributions. As of both 31 December 2020 and 31 December 2019, the estimated future economic benefit was zero and hence no net defined benefit asset was recognized on the balance sheet. In the first quar ter of 2020 , UBS adopted an enhanced methodology for measuring the estimated future economic benefits available under the Swiss pension plan, whereby future net service cost is measured individually for each future year, considering the individually applic able discount rate. In addition, an enhanced discount curve methodology was adopted, utilizing the FINMA-published ultimate forward rate, which represents the average long-term historical real rate plus expected inflation over the long-dated periods where discount rates are unobservable. No changes have been made to the methodology for measuring the defined benefit obligation. Changes to the Swiss pension plan As a result of the effects of continuing low and in some cases negative interest rates, diminished investment return expectations and increasing life expectancy, the pension fund of UBS in Switzerland and UBS agreed to measures that took effect from the start of 2019 to support the long-term financial stability of the Swiss pension fund. As a result, t he conversion rate was lowered, the regular retirement age was increased from 64 to 65, employee contributions were increased, and savings contributions started from age 20 instead of 25. Pensions already in payment on 1 January 2019 were not affected. To mitigate the effects of the reduction of the conversion rate on future pensions, UBS committed to pay an extraordinary contribution of up to CHF 720 million (USD 813 million based on the closing exchange rate as of 31 December 2020) in three installments in 2020, 2021 and 2022. In accordance with IFRS, these measures led to a reduction in the pension obligation recognized by UBS, resulting in a pre-tax gain of USD 241 million in 2018 . This effect was recognized as a reduction in Personnel expenses with a co rresponding effect in Other comprehensive income (OCI) . The first installment of USD 235 million was paid in 2020 and reduced OCI with no effect on the income statement. If the Swiss plan remains in an asset ceiling position, the two payments in 2021 and 2022, adjusted for expected forfeitures, are expected to reduce OCI by USD 43 7 milli on, with no effect on the income statement. The second installment of USD 254 million was paid in January 2021 and the regular employer contributions expected to be made to the Swiss plan in 2021 are estimated to be USD 518 million . UK pension plan The UK plan is a career-average revalued earnings scheme, and benefits increase automatically based on UK price inflation. The normal retirement age for participants in the UK plan is 60. The plan provides guaranteed lifetime pension benefits to plan participants upon retirement. Since 2000, the UK plan has been closed to new entrants and, since 2 013, plan participants are no longer accruing benefits for current or future service. Instead, employees participate in the UK defined contribution plan. The governance responsibility for the UK plan lies jointly with the Pension Trustee Board and UBS. The employer contributions to the pension fund reflect agreed-upon deficit funding contributions, which are determined on the basis of the most recent actuarial valuation using assumptions agreed by the Pension Trustee Board and UBS. In the event of underfund ing, UBS and the Pension Trustee Board must agree on a deficit recovery plan within statutory deadlines. In 2020, UBS made deficit funding contributions of USD 46 million to the UK plan. In 2019 , UBS made deficit funding contributions of USD 242 million . The plan assets are invested in a diversified portfolio of financial assets. In 2020, the UK Pension Trustee Board entered into a longevity swap with an external insurance company, which is recognized as a plan asset . The longevity swap enables the UK pension plan to hedge the risk between expected and actual longevity, which should mitigate volatility in the net defined benefit asset / liability. The longevity swap had nil value on 31 December 2020. In 2019 , UBS and the Pension Trustee Board entered into an arrangement whereby a collateral pool was established to provide security for the pension fund . The value of the collateral pool as of 31 December 2020 was USD 347 million (31 December 2019: USD 364 million ) and includes corporate bonds , government-related debt instruments and other financial assets . The arrangement provides the Pension Trustee Board dedicated access to a pool of assets in the event of UBS’s insolvency or not paying a required deficit funding contribution . In 2021, no contributions are expected to be made to the UK defined benefit plan, subject to regular funding reviews during the year . US pension plans There are two distinct major defined benefit plans in the US, both with a normal retirement age of 65. Since 1998 and 2001, respectively, the plans have been closed to new entrants , who instead can participate in defined contribution plans. One of the defined benefit plans is a contribution-based plan in which each participant accrues a percentage of salary in a retirement savings account. The retirement savings account is credited annually with inte rest based on a rate that is linked to the average yield on one-year US government bonds. For the other defined benefit plan, retirement benefits accrue based on the career-average earnings of each individual plan participant. Former employees with vested benefits have the option to take a lump sum payment or a lifetime annuity . As required under applicable pension laws, both plans have fiduciaries who, together with UBS, are responsible for the governance of the plans. UBS regularly reviews the contributio n strategy for these plans, considering statutory funding rules and the cost of any premiums that must be paid to the Pension Benefit Guaranty Corporation for having an underfunded plan. The plan assets for both plans are invested in a diversified portfoli o of financial assets. Each plan’s fiduciaries are responsible for the investment decisions with respect to the plan assets. The employer contributions expected to be made to the US defined benefit plans in 2021 are estimated at USD 10 million. German pen sion plans There are two defined benefit plans in Germany, and both are contribution-based plans. No plan assets are set aside to fund these plans, and benefits are paid directly by UBS. The normal retirement age for the participants in the German plans is 65. Within the larger of the two plans, each participant accrues a percentage of salary in a retirement savings account. The accumulated account balance of the plan participant is credited on an annual basis with guaranteed interest at a rate of 5%. In th e other plan, amounts are accrued annually based on employee elections related to variable compensation . For this plan, the accumulated account balance is credited on an annual basis with a guaranteed interest rate of 6% for amounts accrued before 2010, of 4% for amounts accrued from 2010 to 2017 and of 0.9% for amounts accrued after 2017. Both plans are subject to German pension law, whereby the responsibility to pay pension benefits when they are due resides entirely with UBS. A portion of the pension pay ments is directly increased in line with price inflation. The benefits expected to be paid by UBS to the participants of the German plans in 2021 are estimated at USD 11 million. Financial information by plan The tables on the following pages provide an analysis of the movement in the net asset / liability recognized on the balance sheet for defined benefit plans, as well as an analysis of amounts recognized in net profit and in Other comprehensive incom e. Defined benefit plans USD million Swiss pension plan UK pension plan US and German pension plans Total 2020 2019 2020 2019 2020 2019 2020 2019 Defined benefit obligation at the beginning of the year 24,496 22,566 3,654 3,192 1,820 1,679 29,970 27,437 Current service cost 447 409 0 0 6 6 453 415 Interest expense 72 200 73 92 45 59 190 351 Plan participant contributions 259 240 0 0 0 0 259 240 Remeasurements 1,279 1,728 449 361 105 185 1,832 2,275 of which: actuarial (gains) / losses due to changes in demographic assumptions (164) (196) (14) (26) (34) 3 (212) (220) of which: actuarial (gains) / losses due to changes in financial assumptions 983 1,641 505 421 134 179 1,621 2,241 of which: experience (gains) / losses 1 460 284 (42) (34) 5 4 423 254 Past service cost related to plan amendments 0 0 3 0 0 0 3 0 Benefit payments (1,153) (1,046) (148) (135) (108) (102) (1,409) (1,283) Other movements (4) 0 0 0 0 0 (4) 0 Foreign currency translation 2,333 399 132 144 37 (8) 2,501 535 Defined benefit obligation at the end of the year 27,728 24,496 4,162 3,654 1,905 1,820 33,795 29,970 of which: amounts owed to active members 13,765 11,577 159 164 245 235 14,169 11,976 of which: amounts owed to deferred members 0 0 1,879 1,559 743 675 2,622 2,233 of which: amounts owed to retirees 13,963 12,918 2,124 1,931 917 911 17,004 15,760 Fair value of plan assets at the beginning of the year 28,219 25,839 3,658 3,032 1,299 1,168 33,176 30,039 Return on plan assets excluding interest income 1,818 2,059 388 284 118 150 2,324 2,492 Interest income 84 233 73 89 38 47 196 369 Employer contributions 729 452 46 242 17 38 792 732 Plan participant contributions 259 240 0 0 0 0 259 240 Benefit payments (1,153) (1,046) (148) (135) (108) (102) (1,409) (1,283) Administration expenses, taxes and premiums paid (13) (11) 0 0 (4) (2) (17) (13) Foreign currency translation 2,647 453 132 146 0 0 2,779 599 Fair value of plan assets at the end of the year 32,590 28,219 4,149 3,658 1,360 1,299 38,100 33,176 Asset ceiling effect at the beginning of the year 3,724 3,274 0 0 0 0 3,724 3,274 Interest expense on asset ceiling effect 12 30 0 0 0 0 12 30 Asset ceiling effect excluding interest expense and foreign currency translation on asset ceiling effect 814 353 0 0 0 0 814 353 Foreign currency translation 313 67 0 0 0 0 313 67 Asset ceiling effect at the end of the year 4,862 3,724 0 0 0 0 4,862 3,724 Net defined benefit asset / (liability) 0 0 (13) 4 (545) (521) (558) (518) Movement in the net asset / (liability) recognized on the balance sheet Net asset / (liability) recognized on the balance sheet at the beginning of the year 0 0 4 (160) (521) (511) (518) (671) Net periodic expenses recognized in net profit (459) (417) (3) (3) (18) (21) (479) (440) Gains / (losses) recognized in other comprehensive income (276) (22) (61) (78) 14 (35) (323) (135) Employer contributions 729 452 46 242 17 38 792 732 Other movements 4 0 0 0 0 0 4 0 Foreign currency translation 1 (13) 0 2 (37) 8 (35) (3) Net asset / (liability) recognized on the balance sheet at the end of the year 0 0 (13) 4 (545) (521) (558) (518) Funded and unfunded plans Defined benefit obligation from funded plans 27,728 24,496 4,162 3,654 1,319 1,319 33,209 29,469 Defined benefit obligation from unfunded plans 0 0 0 0 586 501 586 501 Plan assets 32,590 28,219 4,149 3,658 1,360 1,299 38,100 33,176 Surplus / (deficit) 4,862 3,724 (13) 4 (545) (521) 4,304 3,206 Asset ceiling effect 4,862 3,724 0 0 0 0 4,862 3,724 Net defined benefit asset / (liability) 0 0 (13) 4 (545) (521) (558) (518) Analysis of amounts recognized in net profit USD million Swiss pension plan UK pension plan US and German pension plans Total For the year ended 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Current service cost 447 409 0 0 6 6 453 415 Interest expense related to defined benefit obligation 72 200 73 92 45 59 190 351 Interest income related to plan assets (84) (233) (73) (89) (38) (47) (196) (369) Interest expense on asset ceiling effect 12 30 0 0 0 0 12 30 Administration expenses, taxes and premiums paid 13 11 0 0 4 2 17 13 Past service cost related to plan amendments 0 0 3 0 0 0 3 0 Net periodic expenses recognized in net profit 459 417 3 3 18 21 479 440 Analysis of amounts recognized in other comprehensive income (OCI) USD million Swiss pension plan UK pension plan US and German pension plans Total For the year ended 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Remeasurement of defined benefit obligation (1,279) (1,728) (449) (361) (105) (185) (1,832) (2,275) of which: change in discount rate assumption (777) (1,887) (504) (552) (141) (166) (1,421) (2,605) of which: change in rate of salary increase assumption (230) 3 0 0 0 0 (230) 3 of which: change in rate of pension increase assumption 0 0 (1) 132 1 (4) 0 128 of which: change in rate of interest credit on retirement savings assumption 26 243 0 0 24 18 50 261 of which: change in life expectancy 261 0 22 21 50 4 333 25 of which: change in other actuarial assumptions (99) 196 (8) 5 (34) (33) (142) 168 of which: experience gains / (losses) 1 (460) (284) 42 34 (5) (4) (423) (254) Return on plan assets excluding interest income 1,818 2,059 388 284 118 150 2,324 2,492 Asset ceiling effect excluding interest expense and foreign currency translation (814) (353) 0 0 0 0 (814) (353) Total gains / (losses) recognized in other comprehensive income, before tax (276) (22) (61) (78) 14 (35) (323) (135) 1 Experience (gains) / losses are a component of actuarial remeasurements of the defined benefit obligation that reflect the effects of differences between the previous actuarial assumptions and what has actually occurred. The table below provides information about the duration of the DBO and the timing for expected benefit payments. Swiss pension plan UK pension plan US and German pension plans 1 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Duration of the defined benefit obligation (in years) 15.7 14.9 19.0 20.2 10.2 10.1 Maturity analysis of benefits expected to be paid USD million Benefits expected to be paid within 12 months 1,293 1,232 114 93 122 121 Benefits expected to be paid between 1 and 3 years 2,630 2,483 232 209 235 228 Benefits expected to be paid between 3 and 6 years 3,839 3,670 406 384 346 346 Benefits expected to be paid between 6 and 11 years 6,166 5,761 744 748 532 548 Benefits expected to be paid between 11 and 16 years 5,646 5,070 758 807 413 455 Benefits expected to be paid in more than 16 years 18,884 15,517 3,206 3,913 541 721 1 The duration of the defined benefit obligation represents a weighted average across US and German plans. Actuarial assumptions The measurement of each plan’s DBO considers different actuarial assumptions. Changes in these assumptions lead to volatility in the DBO. The actuarial assumptions used for the defined benefit plans are bas ed on the economic conditions prevailing in the jurisdiction in which they are offered. Changes in the defined benefit obligation are most sensitive to changes in the discount rate. The discount rate is based on the yield of high-quality corporate bonds qu oted in an active market in the currency of the respective plan. A decrease in the discount curve increases the DBO and an increase in the discount curve decreases the DBO. UBS regularly reviews the actuarial assumptions used in calculating the DBO to dete rmine their continuing relevance. › Refer to Note 1 a item 6 for a description of the accounting policy for defined benefit plans The tables below show the significant actuarial assumptions used in calculating the DBO at the end of the year . Significant actuarial assumptions Swiss pension plan UK pension plan US and German pension plans 1 In % 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Discount rate 0.10 0.29 1.42 2.07 1.62 2.58 Rate of salary increase 2.00 1.50 0.00 0.00 2.25 2.37 Rate of pension increase 0.00 0.00 2.89 2.92 1.70 1.80 Rate of interest credit on retirement savings 0.60 0.49 0.00 0.00 1.12 2.57 1 Represents weighted average assumptions across US and German plans. Mortality tables and life expectancies for major plans Life expectancy at age 65 for a male member currently aged 65 aged 45 Country Mortality table 31.12.20 31.12.19 31.12.20 31.12.19 Switzerland BVG 2020 G with CMI 2019 projections 1 21.7 21.6 23.2 23.1 UK S3PA with CMI 2019 projections 2 23.4 23.3 24.6 24.5 USA Pri-2012 with MP-2020 projection scale 3 21.8 22.8 23.2 24.3 Germany Dr. K. Heubeck 2018 G 20.8 20.7 23.6 23.5 Life expectancy at age 65 for a female member currently aged 65 aged 45 Country Mortality table 31.12.20 31.12.19 31.12.20 31.12.19 Switzerland BVG 2020 G with CMI 2019 projections 1 23.4 23.6 24.9 25.1 UK S3PA with CMI 2019 projections 2 24.9 25.1 26.3 26.4 USA Pri-2012 with MP-2020 projection scale 3 23.2 24.4 24.5 25.9 Germany Dr. K. Heubeck 2018 G 24.3 24.2 26.5 26.4 1 In 2019, BVG 2015 G with CMI 2016 projections was used. 2 In 2019, S2PA with CMI 2018 projections was used. 3 In 2019, RP-2014 WCHA with MP-2019 projection scale was used. Sensitivity analysis of significant actuarial assumptions The table below present s a sensitivity analysis for each significant actuarial assumption, showing how the DBO would have been affected by changes in the relevant actuarial assumption that were reasonably possible at the balance sheet date. Unforeseen circumstances may arise, wh ich could result in variations that are outside the range of alternatives deemed reasonably possible. Caution should be used in extrapolating the sensitivities below on the DBO as the sensitivities may not be linear. Sensitivity analysis of significant actuarial assumptions 1 Increase / (decrease) in defined benefit obligation Swiss pension plan UK pension plan US and German pension plans USD million 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Discount rate Increase by 50 basis points (1,793) (1,505) (370) (346) (91) (86) Decrease by 50 basis points 2,048 1,710 423 395 99 93 Rate of salary increase Increase by 50 basis points 117 76 – 2 – 2 1 1 Decrease by 50 basis points (111) (73) – 2 – 2 (1) (1) Rate of pension increase Increase by 50 basis points 1,413 1,221 358 331 8 7 Decrease by 50 basis points – 3 – 3 (316) (299) (7) (7) Rate of interest credit on retirement savings Increase by 50 basis points 236 175 – 4 – 4 9 9 Decrease by 50 basis points (188) 5 (102) – 4 – 4 (8) (9) Life expectancy Increase in longevity by one additional year 1,061 886 182 154 60 51 1 The sensitivity analyses are based on a change in one assumption while holding all other assumptions constant, so that interdependencies between the assumptions are excluded. 2 As the plan is closed for future service, a change in assumption is not applicable. 3 As the assumed rate of pension increase was 0% as of 31 December 2020 and as of 31 December 2019, a downward change in assumption is not applicable. 4 As the UK plan does not provide interest credits on retirement savings, a change in assumption is not applicable. 5 As of 31 December 2020, 20% of retirement savings were subject to a legal minimum rate of 1.00%. Fair value of plan assets The tables below provide information about the composition and fair value of plan assets of the Swiss, the UK and the US pension plans. Composition and fair value of plan assets Swiss pension plan 31.12.20 31.12.19 Fair value Plan asset allocation % Fair value Plan asset allocation % USD million Quoted in an active market Other Total Quoted in an active market Other Total Cash and cash equivalents 219 0 219 1 159 0 159 1 Real estate / property Domestic 0 3,582 3,582 11 0 3,050 3,050 11 Foreign 0 331 331 1 0 160 160 1 Investment funds Equity Domestic 826 0 826 3 701 0 701 2 Foreign 6,284 1,958 8,242 25 6,091 1,653 7,743 27 Bonds 1 Domestic, AAA to BBB– 3,721 0 3,721 11 3,238 0 3,238 11 Foreign, AAA to BBB– 6,146 0 6,146 19 5,880 0 5,880 21 Foreign, below BBB– 1,303 0 1,303 4 999 0 999 4 Other 3,363 3,722 7,085 22 1,604 3,956 5,560 20 Other investments 663 473 1,136 3 535 194 729 3 Total fair value of plan assets 22,525 10,065 32,590 100 19,206 9,014 28,219 100 31.12.20 31.12.19 Total fair value of plan assets 32,590 28,219 of which: 2 Bank accounts at UBS 231 159 UBS debt instruments 34 7 UBS shares 24 21 Securities lent to UBS 3 1,416 1,328 Property occupied by UBS 96 88 Derivative financial instruments, counterparty UBS 3 149 10 1 The bond credit ratings are primarily based on Standard & Poor’s credit ratings. Ratings AAA to BBB– and below BBB– represent investment grade and non-investment grade ratings, respectively. In cases where credit ratings from other rating agencies were used, these were converted to the equivalent rating in Standard & Poor’s rating classification. 2 Bank accounts at UBS encompass accounts in the name of the Swiss pension fund. The other positions disclosed in the table encompass both direct investments in UBS instruments and indirect investments, i.e., those made through funds that the pension fund invests in. 3 Securities lent to UBS and derivative financial instruments are presented gross of any collateral. Securities lent to UBS were fully covered by collateral as of 31 December 2020 and 31 December 2019. Net of collateral, derivative financial instruments amounted to negative USD 17 million as of 31 December 2020 (31 December 2019: positive USD 6 million). Composition and fair value of plan assets (continued) UK pension plan 31.12.20 31.12.19 Fair value Plan asset allocation % Fair value Plan asset allocation % USD million Quoted in an active market Other Total Quoted in an active market Other Total Cash and cash equivalents 195 0 195 5 141 0 141 4 Bonds 1 Domestic, AAA to BBB– 2,150 0 2,150 52 1,810 0 1,810 49 Foreign, AAA to BBB– 53 0 53 1 0 0 0 0 Investment funds Equity Domestic 34 3 37 1 33 0 33 1 Foreign 1,077 0 1,077 26 916 0 916 25 Bonds 1 Domestic, AAA to BBB– 919 131 1,050 25 610 117 727 20 Domestic, below BBB– 47 0 47 1 22 0 22 1 Foreign, AAA to BBB– 149 0 149 4 310 0 310 8 Foreign, below BBB– 110 0 110 3 108 0 108 3 Real estate Domestic 98 16 114 3 103 18 122 3 Foreign 0 37 37 1 0 19 19 1 Other (86) 0 (86) (2) 0 0 0 0 Insurance contracts 0 8 8 0 0 7 7 0 Derivatives (3) 0 (3) 0 3 0 3 0 Asset-backed securities 0 6 6 0 0 6 6 0 Other investments 2 (803) 9 (794) (19) (572) 7 (565) (15) Total fair value of plan assets 3,940 209 4,149 100 3,483 175 3,658 100 1 The bond credit ratings are primarily based on Standard & Poor’s credit ratings. Ratings AAA to BBB– and below BBB– represent investment grade and non-investment grade ratings, respectively. In cases where credit ratings from other rating agencies were used, these were converted to the equivalent rating in Standard & Poor’s rating classification. 2 Mainly relates to repurchase arrangements on UK treasury bonds. US pension plans 31.12.20 31.12.19 Fair value Plan asset allocation % Fair value Plan asset allocation % USD million Quoted in an active market Other Total Quoted in an active market Other Total Cash and cash equivalents 38 0 38 3 27 0 27 2 Bonds 1 Domestic, AAA to BBB– 490 0 490 36 475 0 475 37 Domestic, below BBB– 7 0 7 0 2 0 2 0 Foreign, AAA to BBB– 99 0 99 7 99 0 99 8 Foreign, below BBB– 1 0 1 0 3 0 3 0 Investment funds Equity Domestic 210 0 210 15 208 0 208 16 Foreign 169 0 169 12 161 0 161 12 Bonds 1 Domestic, AAA to BBB– 195 0 195 14 176 0 176 14 Domestic, below BBB– 34 0 34 2 28 0 28 2 Foreign, AAA to BBB– 19 0 19 1 17 0 17 1 Foreign, below BBB– 3 0 3 0 3 0 3 0 Real estate Domestic 0 14 14 1 0 13 13 1 Other 79 0 79 6 69 0 69 5 Insurance contracts 0 1 1 0 0 18 18 1 Total fair value of plan assets 1,345 15 1,360 100 1,268 31 1,299 100 1 The bond credit ratings are primarily based on Standard & Poor’s credit ratings. Ratings AAA to BBB– and below BBB– represent investment grade and non-investment grade ratings, respectively. In cases where credit ratings from other rating agencies were used, these were converted to the equivalent rating in Standard & Poor’s rating classification. b) Defined contribution plans UBS sponsors a number of defined contribution plans, with t he most significant plans in the US and the UK . UBS’s obligation is limited to its contributions made in accordance with the plan, which may include direct contributions as well as matching contributions . Employer contribu tions to defined contribution plans are recognized as an expense, which, for 2020 ,
UBS AG
Disclosure Post-employment Benefit Plans [Line Items]
Post-employment benefit plans [text block]	Note 26 Post-employment benefit plans The table below provides a breakdown of expenses related to pension and other post-employment benefit plans recognized in the income statement within Personnel expenses . Income statement – expenses related to post-employment benefit plans USD million 31.12.20 31.12.19 31.12.18 Net periodic expenses for defined benefit plans 306 291 140 of which: related to major plans 1 289 271 141 of which: Swiss pension plan 2 269 248 108 of which: UK pension plan 3 3 11 of which: US and German pension plans 18 21 22 of which: related to remaining plans and other expenses 3 17 19 (1) Expenses for defined contribution plans 4 291 278 223 of which: UK plans 36 34 35 of which: US plan 190 173 127 of which: remaining plans 65 71 61 Total post-employment benefit plan expenses 5 597 569 363 1 Refer to Note 26a for more information. 2 Changes to the Swiss pension plan announced in 2018 resulted in a pre-tax gain of USD 132 million related to past service. Refer to Note 26a for more information on these changes. 3 Other expenses include differences between actual and estimated performance award accruals. 4 Refer to Note 26b for more information. 5 Refer to Note 6. The table below provides a breakdown of amounts recognized in Other comprehensive income for defined benefit plans. Other comprehensive income – gains / (losses) on defined benefit plans USD million 31.12.20 31.12.19 31.12.18 Major plans 1 (219) (128) (79) of which: Swiss pension plan (172) (15) (201) of which: UK pension plan (61) (78) 130 of which: US and German pension plans 14 (35) (8) Remaining plans (3) (1) 9 Gains / (losses) recognized in other comprehensive income, before tax (222) (129) (70) Tax (expense) / benefit relating to defined benefit plans recognized in other comprehensive income 88 (41) 245 Gains / (losses) recognized in other comprehensive income, net of tax 2 (134) (170) 175 1 Refer to Note 26a for more information. 2 Refer to the “Statement of comprehensive income.” The table below provides a breakdown of the assets and liabilities recognized on the balance sheet within O ther non-financial assets and Other non-financial liabilities related to defined benefit plans. Balance sheet – net defined benefit asset USD million 31.12.20 31.12.19 Major plans 1 42 9 of which: Swiss pension plan 2 0 0 of which: UK pension plan 0 4 of which: US and German pension plans 42 5 Total net defined benefit asset 42 9 1 Refer to Note 26a for more information. 2 As of 31 December 2020 and 31 December 2019, the Swiss pension plan was in a surplus situation. No net defined benefit asset was recognized on the balance sheet due to the IFRS asset ceiling restriction. Refer to Note 26a for more information. Balance sheet – net defined benefit liability USD million 31.12.20 31.12.19 Major plans 1 599 527 of which: UK pension plan 13 0 of which: US and German pension plans 2 586 527 Remaining plans 112 103 Total net defined benefit liability 3 711 629 1 Refer to Note 26a for more information. 2 Of the total liability recognized as of 31 December 2020, USD 88 million related to US plans and USD 498 million related to German plans (31 December 2019: USD 111 million and USD 416 million, respectively). 3 Refer to Note 19c. a) Defined benefit plans UBS AG has established defined benefit plans for its employees in various jurisdictions in accordance with local regulations and practices . T he major plans are located in Switzerland, the UK, the US and Germany. The level of benefits depends on the specific plan rules . For the funded plans, the plan assets are invested in a diversified portfolio of financial assets. Volatility arises in each plan’s net asset / liability position because the fair value of the plan’s financial assets is not fully correlated to movements in the value of the plan’s defined benefit obligation ( DBO ) . UBS AG ’ s general principle is to ensure that the plans are adequately funded on the basis of actuarial valuations. Local pension regulations are the primary drivers for determining when contributions are required. Swiss pension plan The Swiss pension plan covers employees of UBS AG and employees of companies having close economic or financi al ties with UBS AG, and exceeds the minimum benefit requirements under Swiss pension law. In 2017, a significant number of employees transferred from UBS AG to UBS Business Solutions AG, which is a directly held subsidiary of UBS Group AG. There continues to be one pooled pension plan in Switzerland covering the employees of UBS AG and those transferred to UBS Business Solutions AG. UBS AG and UBS Business Solutions AG both are legal sponsors of UBS’s Swiss pension plan. Since the date of the empl oyee transfer, UBS AG and UBS Business Solutions AG apply proportionate defined benefit accounting, i.e., the net pension cost and the net pension asset / liability of the Swiss pension plan are allocated proportionally between UBS AG and UBS Business Solu tions AG based on the aggregated net pension cost and defined benefit obligations related to their employees. The Swiss plan offers retirement, disability and survivor benefits and is governed by a Pension Foundation Board. The responsibilities of this bo ard are defined by Swiss pension law and the plan rules. Savings c ontributions to the Swiss plan are paid by both employer and employee. Depending on the age of the employee, UBS AG pays a savings contribution that ranges between 6.5% and 27.5% of contributory base salary and between 2 . 8 % and 9% of contributory variable compensation. UBS AG also pays risk contributions that are used to fund disability and survivor benefits. Employees can choose the level of savings contributions paid by them , which vary between 2.5% and 13.5% of contributory base salary and between 0% and 9% of contributory variable compensation, depending on age and choice of savings contribution category. The plan offers to member s at the normal retirement age of 6 5 a choice between a lifetime pension and a partial or full lump sum payment. Participants can choose to draw early retirement benefits starting from the age of 58, but can also continue employment and remain active members of the plan until the age of 70 . Employees have the opportunity to make additional purchases of benefits to fund early retirement benefits . The pension amount payable to a participant is calculated by applying a conversion rate to the accumulated balanc e of the participant’s retirement savings account at the retirement date. The balance is based on credited vested benefits transferred from previous employers, purchases of benefits, and the employee and employer contributions that have been made to the participant ’ s retirement savings account, as well as the interest accrued . The interest rate is defined annually by the Pension Foundation Board. Although the Swiss plan is based on a defined contribution promise under Swiss pension law, it is accounted for as a defined benefit plan under IFRS, primarily because of the obligation to accrue interest on the participants ’ retirement savings accounts and the payment of lifetime pension benefits. An actuarial valuation in accordance with Swiss pension law is perf ormed regularly. S hould an underfunded situation on this basis occur, the Pension Foundation Board is required to take the necessary measures to ensure that full funding can be expected to be restored within a maximum period of 10 years. If a Swiss plan were to become significantly underfunded on a Swiss pension law basis, additional employer and employee contributions could be required. In this situatio n, the risk is shared between employer and employees, and the employer is not legally obliged to cover more than 50% of the additional contributions required. As of 31 December 2020 , the Swiss plan had a technical funding ratio under Swiss pension law of 1 32 . 6% (31 December 2019: 127.1 %). The investment strategy of the Swiss plan complies with Swiss pension law, including the rules and regulations relating to diversification of plan assets. These rules, among others, specify restrictions on the composition of plan assets; e.g., there is a limit of 50% for investments in equities. The investment strategy of the Swiss plan is aligned with the defined risk budget set out by the Pension Foundation Board. The risk budget is determined on the basis of regularly performed asset and liability management analyses. In order to implement the risk budget, the Swiss plan may use direct investments, in vestment funds and derivatives. To mitigate foreign currency risk, a specific currency hedging strategy is in place. The Pension Foundation Board strives for a medium- and long-term balance between assets and liabilities. As of 31 December 2020, the Swiss plan was in a surplus situation on an IFRS measurement basis, as the fair value of the plan’s assets exceeded the DBO by USD 2 , 739 million (31 December 2019: a surplus of USD 2 , 099 million). However, a surplus is only recognized on the balance sheet to th e extent that it does not exceed the estimated future economic benefit, which equals the difference between the present value of the estimated future net service cost and the present value of the estimated future employer contributions. As of both 31 Decem ber 2020 and 31 December 2019, the estimated future economic benefit was zero and hence no net defined benefit asset was recognized on the balance sheet. In the first quarter of 2020 , UBS AG adopted an enhanced methodology for measuring the estimated future economic benefits available under the Swiss pension plan, whereby future net service cost is measured individually for each future year, considering the individually applicable discount rate. In a ddition, an enhanced discount curve methodology was adopted, utilizing the FINMA-published ultimate forward rate, which represents the average long-term historical real rate plus expected inflation over the long-dated periods where discount rates are unobs ervable. No changes have been made to the methodology for measuring the defined benefit obligation. Changes to the Swiss pension plan As a result of the effects of continuing low and in some cases negative interest rates, diminished investment return expec tations and increasing life expectancy, the pension fund of UBS AG in Switzerland and UBS AG agreed to measures that took effect from the start of 2019 to support the long-term financial stability of the Swiss pension fund. As a result, the conversion rate was lowered, the regular retirement age was increased from 64 to 65, employee contributions were increased, and savings contributions started from age 20 instead of 25. Pensions already in payment on 1 January 2019 were not affected. To mitigate the effec ts of the reduction of the conversion rate on future pensions, UBS AG committed to pay an extraordinary contribution of up to CHF 4 50 million (USD 508 million based on the closing exchange rate as of 31 December 2020) in three installments in 2020, 2021 and 2022. In accordance with IFRS, these measures led to a reduction in the pension obligation recognized by UBS AG , resulting in a pre-tax gain of USD 132 million in 2018 . This effect was recognized as a reduction in Personnel expenses with a corresponding effect in Other comprehensive income (OCI) . The first installment of USD 143 million was paid in 2020 and reduced OCI with no effect on the income statement. If the Swiss plan remains in an asset ceiling position, the two payments in 2021 and 2022, adjusted for expected forfeitures, are expected to reduce OCI by USD 262 milli on, with no effect on the income statement. The second installment of USD 15 2 million was paid in January 2021 and the regular employer contributions expected to be made to the Swiss plan in 2021 are estimated to be USD 292 million . UK pension plan The UK plan is a career-average revalued earnings scheme, and benefits increase aut omatically based on UK price inflation. The normal retirement age for participants in the UK plan is 60. The plan provides guaranteed lifetime pension benefits to plan participants upon retirement. Since 2000, the UK plan has been closed to new entrants an d, since 2013, plan participants are no longer accruing benefits for current or future service. Instead, employees participate in the UK defined contribution plan. The governance responsibility for the UK plan lies jointly with the Pension Trustee Board an d UBS AG . The employer contributions to the pension fund reflect agreed-upon deficit funding contributions, which are determined on the basis of the most recent actuarial valuation using assumptions agreed by the Pension Trustee Board and UBS AG . In the ev ent of underfunding, UBS AG and the Pension Trustee Board must agree on a deficit recovery plan within statutory deadlines. In 2020, UBS AG made deficit funding contributions of USD 46 million to the UK plan. In 2019 , UBS AG made deficit funding contributions of USD 242 million . The plan assets are invested in a diversified portfolio of financial assets. In 2020, the UK Pension Trustee Board entered into a longevity swap with an external insurance company, which is recognized as a plan asset . The longevity swap enables the UK pension plan to hedge the risk between expected and actual longevity, which should mitigate volatility in the net defined benefit asset / liability. The longevity swap had nil value on 31 December 2020. In 2019 , UBS AG and the Pension Trustee Board entered into an arrangement whereby a collateral pool was established to provide security for the pension fund . The value of the collateral pool as of 31 December 2020 was USD 347 million (31 December 2019: USD 364 million ) and includes corporate bonds , government-related debt instruments and other financial assets . The arrangement provides the Pension Trustee Board dedicated access to a pool of assets in the event of UBS AG ’s insolvency or not paying a required deficit funding contribution . In 2021, no contributions are expected to be made to the UK defined benefit plan, subject to regular fundi ng reviews during the year . US pension plans There are two distinct major defined benefit plans in the US, both with a normal retirement age of 65. Since 1998 and 2001, respectively, the plans have been closed to new entrants , who instead can participate i n defined contribution plans. One of the defined benefit plans is a contribution-based plan in which each participant accrues a percentage of salary in a retirement savings account. The retirement savings account is credited annually with interest based on a rate that is linked to the average yield on one-year US government bonds. For the other defined benefit plan, retirement benefits accrue based on the career-average earnings of each individual plan participant. Former employees with vested benefits have the option to take a lump sum payment or a lifetime annuity . As required under applicable pension laws, both plans have fiduciaries who, together with UBS AG , are responsible for the governance of the plans. UBS AG regularly reviews the contribution stra tegy for these plans, considering statutory funding rules and the cost of any premiums that must be paid to the Pension Benefit Guaranty Corporation for having an underfunded plan. The plan assets for both plans are invested in a diversified portfolio of f inancial assets. Each plan’s fiduciaries are responsible for the investment decisions with respect to the plan assets. The employer contributions expected to be made to the US defined benefit plans in 2021 are estimated at USD 10 million. German pension p lans There are two defined benefit plans in Germany, and both are contribution-based plans. No plan assets are set aside to fund these plans, and benefits are paid directly by UBS AG . The normal retirement age for the participants in the German plans is 65. Within the larger of the two plans, each participant accrues a percentage of salary in a retirement savings account. The accumulated account balance of the plan participant is cred ited on an annual basis with guaranteed interest at a rate of 5%. In the other plan, amounts are accrued annually based on employee elections related to variable compensation . For this plan, the accumulated account balance is credited on an annual basis wi th a guaranteed interest rate of 6% for amounts accrued before 2010, of 4% for amounts accrued from 2010 to 2017 and of 0.9% for amounts accrued after 2017. Both plans are subject to German pension law, whereby the responsibility to pay pension benefits wh en they are due resides entirely with UBS AG . A portion of the pension payments is directly increased in line with price inflation. The benefits expected to be paid by UBS AG to the participants of the German plans in 2021 are estimated at USD 11 million. Financial information by plan The tables on the following pages provide an analysis of the movement in the net asset / liability recognized on the balance sheet for defined benefit plans, as well as an analysis of amounts recognized in net profit and in Ot her comprehensive incom e. Defined benefit plans USD million Swiss pension plan UK pension plan US and German pension plans Total 2020 2019 2020 2019 2020 2019 2020 2019 Defined benefit obligation at the beginning of the year 13,809 13,774 3,654 3,192 1,820 1,679 19,283 18,645 Current service cost 262 243 0 0 6 6 268 249 Interest expense 40 122 73 92 45 59 159 273 Plan participant contributions 159 149 0 0 0 0 159 149 Remeasurements 677 (61) 449 361 105 185 1,231 485 of which: actuarial (gains) / losses due to changes in demographic assumptions (53) (125) (14) (26) (34) 3 (101) (148) of which: actuarial (gains) / losses due to changes in financial assumptions 565 1,006 505 421 134 179 1,204 1,605 of which: experience (gains) / losses 1,2 165 (942) (42) (34) 5 4 127 (972) Past service cost related to plan amendments 0 0 3 0 0 0 3 0 Benefit payments (641) (624) (148) (135) (108) (102) (898) (860) Other movements (4) 0 0 0 0 0 (4) 0 Foreign currency translation 1,317 206 132 144 37 (8) 1,486 342 Defined benefit obligation at the end of the year 15,619 13,809 4,162 3,654 1,905 1,820 21,686 19,283 of which: amounts owed to active members 8,290 7,073 159 164 245 235 8,694 7,472 of which: amounts owed to deferred members 0 0 1,879 1,559 743 675 2,622 2,233 of which: amounts owed to retirees 7,329 6,735 2,124 1,931 917 911 10,370 9,577 Fair value of plan assets at the beginning of the year 15,908 15,772 3,658 3,032 1,299 1,168 20,864 19,972 Return on plan assets excluding interest income 2 962 (30) 388 284 118 150 1,469 403 Interest income 48 142 73 89 38 47 159 278 Employer contributions 436 271 46 242 17 38 499 550 Plan participant contributions 159 149 0 0 0 0 159 149 Benefit payments (641) (624) (148) (135) (108) (102) (898) (860) Administration expenses, taxes and premiums paid (8) (7) 0 0 (4) (2) (11) (9) Foreign currency translation 1,495 235 132 146 0 0 1,626 381 Fair value of plan assets at the end of the year 18,358 15,908 4,149 3,658 1,360 1,299 23,867 20,864 Asset ceiling effect at the beginning of the year 2,099 1,998 0 0 0 0 2,099 1,998 Interest expense on asset ceiling effect 7 18 0 0 0 0 7 18 Asset ceiling effect excluding interest expense and foreign currency translation on asset ceiling effect 457 46 0 0 0 0 457 46 Foreign currency translation 176 36 0 0 0 0 176 36 Asset ceiling effect at the end of the year 2,739 2,099 0 0 0 0 2,739 2,099 Net defined benefit asset / (liability) 0 0 (13) 4 (545) (521) (558) (518) Movement in the net asset / (liability) recognized on the balance sheet Net asset / (liability) recognized on the balance sheet at the beginning of the year 0 0 4 (160) (521) (511) (518) (671) Net periodic expenses recognized in net profit (269) (248) (3) (3) (18) (21) (289) (271) Gains / (losses) recognized in other comprehensive income (172) (15) (61) (78) 14 (35) (219) (128) Employer contributions 436 271 46 242 17 38 499 550 Other movements 4 0 0 0 0 0 4 0 Foreign currency translation 1 (8) 0 2 (37) 8 (35) 2 Net asset / (liability) recognized on the balance sheet at the end of the year 0 0 (13) 4 (545) (521) (558) (518) Funded and unfunded plans Defined benefit obligation from funded plans 15,619 13,809 4,162 3,654 1,319 1,319 21,100 18,782 Defined benefit obligation from unfunded plans 0 0 0 0 586 501 586 501 Plan assets 18,358 15,908 4,149 3,658 1,360 1,299 23,867 20,864 Surplus / (deficit) 2,739 2,099 (13) 4 (545) (521) 2,181 1,582 Asset ceiling effect 2,739 2,099 0 0 0 0 2,739 2,099 Net defined benefit asset / (liability) 0 0 (13) 4 (545) (521) (558) (518) 1 Experience (gains) / losses are a component of actuarial remeasurements of the defined benefit obligation that reflect the effects of differences between the previous actuarial assumptions and what has actually occurred. 2 Includes the effect from employees transferring between UBS AG and UBS Business Solutions during the period. Analysis of amounts recognized in net profit USD million Swiss pension plan UK pension plan US and German pension plans Total For the year ended 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Current service cost 262 243 0 0 6 6 268 249 Interest expense related to defined benefit obligation 40 122 73 92 45 59 159 273 Interest income related to plan assets (48) (142) (73) (89) (38) (47) (159) (278) Interest expense on asset ceiling effect 7 18 0 0 0 0 7 18 Administration expenses, taxes and premiums paid 8 7 0 0 4 2 11 9 Past service cost related to plan amendments 0 0 3 0 0 0 3 0 Net periodic expenses recognized in net profit 269 248 3 3 18 21 289 271 Analysis of amounts recognized in other comprehensive income (OCI) USD million Swiss pension plan UK pension plan US and German pension plans Total For the year ended 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Remeasurement of defined benefit obligation (677) 61 (449) (361) (105) (185) (1,231) (485) of which: change in discount rate assumption (447) (1,156) (504) (552) (141) (166) (1,092) (1,874) of which: change in rate of salary increase assumption (132) 2 0 0 0 0 (132) 2 of which: change in rate of pension increase assumption 0 0 (1) 132 1 (4) 0 128 of which: change in rate of interest credit on retirement savings assumption 15 149 0 0 24 18 39 167 of which: change in life expectancy 84 0 22 21 50 4 156 25 of which: change in other actuarial assumptions (33) 125 (8) 5 (34) (33) (75) 97 of which: experience gains / (losses) 1,2 (165) 942 42 34 (5) (4) (127) 972 Return on plan assets excluding interest income 962 (30) 388 284 118 150 1,469 403 Asset ceiling effect excluding interest expense and foreign currency translation (457) (46) 0 0 0 0 (457) (46) Total gains / (losses) recognized in other comprehensive income, before tax (172) (15) (61) (78) 14 (35) (219) (128) 1 Experience (gains) / losses are a component of actuarial remeasurements of the defined benefit obligation that reflect the effects of differences between the previous actuarial assumptions and what has actually occurred. 2 Includes the effect from employees transferring between UBS AG and UBS Business Solutions during the period. The table below provides information about the duration of the DBO and the timing for expected benefit payments. Swiss pension plan UK pension plan US and German pension plans 1 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Duration of the defined benefit obligation (in years) 16.2 15.2 19.0 20.2 10.2 10.1 Maturity analysis of benefits expected to be paid USD million Benefits expected to be paid within 12 months 710 687 114 93 122 121 Benefits expected to be paid between 1 and 3 years 1,442 1,383 232 209 235 228 Benefits expected to be paid between 3 and 6 years 2,100 2,048 406 384 346 346 Benefits expected to be paid between 6 and 11 years 3,408 3,232 744 748 532 548 Benefits expected to be paid between 11 and 16 years 3,184 2,899 758 807 413 455 Benefits expected to be paid in more than 16 years 11,186 9,136 3,206 3,913 541 721 1 The duration of the defined benefit obligation represents a weighted average across US and German plans. Actuarial assumptions The measurement of each plan’s DBO considers different actuarial assumptions. Changes in these assumptions lead to volatility in the DBO. The actuarial assumptions used for the defined benefit plans are based on the economic conditions prevailing in the jurisdiction in which they are offered. Changes in the defined bene fit obligation are most sensitive to changes in the discount rate. The discount rate is based on the yield of high-quality corporate bonds quoted in an active market in the currency of the respective plan. A decrease in the discount curve increases the DBO and an increase in the discount curve decreases the DBO. UBS AG regularly reviews the actuarial assumptions used in calculating the DBO to determine their continuing relevance. › Refer to Note 1 a item 6 for a description of the accounting policy for defined benefit plans The tables below show the significant actuarial assumptions used in calculating the DBO at the end of the year . Significant actuarial assumptions Swiss pension plan UK pension plan US and German pension plans 1 In % 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Discount rate 0.10 0.29 1.42 2.07 1.62 2.58 Rate of salary increase 2.00 1.50 0.00 0.00 2.25 2.37 Rate of pension increase 0.00 0.00 2.89 2.92 1.70 1.80 Rate of interest credit on retirement savings 0.60 0.49 0.00 0.00 1.12 2.57 1 Represents weighted average assumptions across US and German plans. Mortality tables and life expectancies for major plans Life expectancy at age 65 for a male member currently aged 65 aged 45 Country Mortality table 31.12.20 31.12.19 31.12.20 31.12.19 Switzerland BVG 2020 G with CMI 2019 projections 1 21.7 21.6 23.2 23.1 UK S3PA with CMI 2019 projections 2 23.4 23.3 24.6 24.5 USA Pri-2012 with MP-2020 projection scale 3 21.8 22.8 23.2 24.3 Germany Dr. K. Heubeck 2018 G 20.8 20.7 23.6 23.5 Life expectancy at age 65 for a female member currently aged 65 aged 45 Country Mortality table 31.12.20 31.12.19 31.12.20 31.12.19 Switzerland BVG 2020 G with CMI 2019 projections 1 23.4 23.6 24.9 25.1 UK S3PA with CMI 2019 projections 2 24.9 25.1 26.3 26.4 USA Pri-2012 with MP-2020 projection scale 3 23.2 24.4 24.5 25.9 Germany Dr. K. Heubeck 2018 G 24.3 24.2 26.5 26.4 1 In 2019, BVG 2015 G with CMI 2016 projections was used. 2 In 2019, S2PA with CMI 2018 projections was used. 3 In 2019, RP-2014 WCHA with MP-2019 projection scale was used. Sensitivity analysis of significant actuarial assumptions The table below presents a sensitivity analysis for each significant actuarial assumption, showing how the DBO would have been affected by changes in the relevant actuari al assumption that were reasonably possible at the balance sheet date. Unforeseen circumstances may arise, which could result in variations that are outside the range of alternatives deemed reasonably possible. Caution should be used in extrapolating the s ensitivities below on the DBO as the sensitivities may not be linear. Sensitivity analysis of significant actuarial assumptions 1 Increase / (decrease) in defined benefit obligation Swiss pension plan UK pension plan US and German pension plans USD million 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Discount rate Increase by 50 basis points (1,030) (853) (370) (346) (91) (86) Decrease by 50 basis points 1,181 972 423 395 99 93 Rate of salary increase Increase by 50 basis points 74 49 – 2 – 2 1 1 Decrease by 50 basis points (71) (47) – 2 – 2 (1) (1) Rate of pension increase Increase by 50 basis points 793 673 358 331 8 7 Decrease by 50 basis points – 3 – 3 (316) (299) (7) (7) Rate of interest credit on retirement savings Increase by 50 basis points 142 107 – 4 – 4 9 9 Decrease by 50 basis points (113) 5 (62) – 4 – 4 (8) (9) Life expectancy Increase in longevity by one additional year 566 459 182 154 60 51 1 The sensitivity analyses are based on a change in one assumption while holding all other assumptions constant, so that interdependencies between the assumptions are excluded. 2 As the plan is closed for future service, a change in assumption is not applicable. 3 As the assumed rate of pension increase was 0% as of 31 December 2020 and as of 31 December 2019, a downward change in assumption is not applicable. 4 As the UK plan does not provide interest credits on retirement savings, a change in assumption is not applicable. 5 As of 31 December 2020, 17.7% of retirement savings were subject to a legal minimum rate of 1.00%. Fair value of plan assets The tables below provide information about the composition and fair value of plan assets of the Swiss, the UK and the US pension plans. Composition and fair value of plan assets Swiss pension plan 31.12.20 31.12.19 Fair value Plan asset allocation % Fair value Plan asset allocation % USD million Quoted in an active market Other Total Quoted in an active market Other Total Cash and cash equivalents 123 0 123 1 90 0 90 1 Real estate / property Domestic 0 2,018 2,018 11 0 1,720 1,720 11 Foreign 0 186 186 1 0 90 90 1 Investment funds Equity Domestic 465 0 465 3 395 0 395 2 Foreign 3,540 1,103 4,642 25 3,433 932 4,365 27 Bonds 1 Domestic, AAA to BBB– 2,096 0 2,096 11 1,825 0 1,825 11 Foreign, AAA to BBB– 3,462 0 3,462 19 3,315 0 3,315 21 Foreign, below BBB– 734 0 734 4 563 0 563 4 Other 1,894 2,097 3,991 22 904 2,230 3,134 20 Other investments 373 266 640 3 301 109 411 3 Total fair value of plan assets 12,688 5,670 18,358 100 10,827 5,081 15,908 100 31.12.20 31.12.19 Total fair value of plan assets 18,358 15,908 of which: 2 Bank accounts at UBS AG 130 90 UBS AG debt instruments 19 4 UBS Group AG shares 13 12 Securities lent to UBS AG 3 796 748 Property occupied by UBS AG 54 50 Derivative financial instruments, counterparty UBS AG 3 84 6 1 The bond credit ratings are primarily based on Standard & Poor’s credit ratings. Ratings AAA to BBB– and below BBB– represent investment grade and non-investment grade ratings, respectively. In cases where credit ratings from other rating agencies were used, these were converted to the equivalent rating in Standard & Poor’s rating classification. 2 Bank accounts at UBS AG encompass accounts in the name of the Swiss pension fund. The other positions disclosed in the table encompass both direct investments in UBS AG instruments and UBS Group AG shares and indirect investments, i.e., those made through funds that the pension fund invests in. 3 Securities lent to UBS AG and derivative financial instruments are presented gross of any collateral. Securities lent to UBS AG were fully covered by collateral as of 31 December 2020 and 31 December 2019. Net of collateral, derivative financial instruments amounted to negative USD 9 million as of 31 December 2020 (31 December 2019: positive USD 3 million). Composition and fair value of plan assets (continued) UK pension plan 31.12.20 31.12.19 Fair value Plan asset allocation % Fair value Plan asset allocation % USD million Quoted in an active market Other Total Quoted in an active market Other Total Cash and cash equivalents 195 0 195 5 141 0 141 4 Bonds 1 Domestic, AAA to BBB– 2,150 0 2,150 52 1,810 0 1,810 49 Foreign, AAA to BBB– 53 0 53 1 0 0 0 0 Investment funds Equity Domestic 34 3 37 1 33 0 33 1 Foreign 1,077 0 1,077 26 916 0 916 25 Bonds 1 Domestic, AAA to BBB– 919 131 1,050 25 610 117 727 20 Domestic, below BBB– 47 0 47 1 22 0 22 1 Foreign, AAA to BBB– 149 0 149 4 310 0 310 8 Foreign, below BBB– 110 0 110 3 108 0 108 3 Real estate Domestic 98 16 114 3 103 18 122 3 Foreign 0 37 37 1 0 19 19 1 Other (86) 0 (86) (2) 0 0 0 0 Insurance contracts 0 8 8 0 0 7 7 0 Derivatives (3) 0 (3) 0 3 0 3 0 Asset-backed securities 0 6 6 0 0 6 6 0 Other investments 2 (803) 9 (794) (19) (572) 7 (565) (15) Total fair value of plan assets 3,940 209 4,149 100 3,483 175 3,658 100 1 The bond credit ratings are primarily based on Standard & Poor’s credit ratings. Ratings AAA to BBB– and below BBB– represent investment grade and non-investment grade ratings, respectively. In cases where credit ratings from other rating agencies were used, these were converted to the equivalent rating in Standard & Poor’s rating classification. 2 Mainly relates to repurchase arrangements on UK treasury bonds. Composition and fair value of plan assets (continued) US pension plans 31.12.20 31.12.19 Fair value Plan asset allocation % Fair value Plan asset allocation % USD million Quoted in an active market Other Total Quoted in an active market Other Total Cash and cash equivalents 38 0 38 3 27 0 27 2 Bonds 1 Domestic, AAA to BBB– 490 0 490 36 475

Employee benefits_ variable com

Employee benefits: variable compensation	12 Months Ended
Employee benefits: variable compensation	Dec. 31, 2020
Disclosure Equity Participation And Other Compensation Plans [Line Items]
Employee benefits: variable compensation [text block]	Note 27 Employee benefits: variable compensation a) Plans offered The Group has several share-based and other deferred compensation plans that align the interests of Group Executive Board (GEB) members and other employees with the interests of investors. Share based payment awards are granted in the form of notional sha res and, where permitted, carry a dividend equivalent that may be paid in notional shares or cash and that vest on the same terms and conditions as the award. Awards are settled by delivering UBS shares at vesting, except in jurisdictions where this is not permitted for legal or tax reasons. Deferred compensation awards are generally forfeitable upon, among other circumstances, voluntary termination of employment with UBS. These compensation plans are also designed to meet regulatory requirements and inclu de special provisions for regulated employees . The most significant deferred compensation plans are described below . › Refer to Note 1 a item 5 for a description of the accounting policy related to share-based and other deferred compensation plans Mandatory deferred compensation plans Equity Ownership Plan (EOP) The EOP is a mandatory deferred share-based compensation plan for all employees whose total annual compensation exceeds a specified threshold, other than GEB members, Gro up Managing Directors (GMDs) and Group or Divisional Vice Chair role holders who are granted share-based awards under the new Long-Term Incentive Plan (LTIP) first granted in 2020. Awards generally vest in equal installments after two and three years following grant, provided th at vesting conditions are satisfied. Awards granted to GEB members in 2019 and prior years generally vest three, four and five years after grant. EOP awards granted to GEB members and GMDs in 2019 and prior years, as well as EOP awar ds granted to certain other employees will only vest if certain performance measures both for the Group and the applicable business division are met. In order to align deferred compensation of certain Asset Management employees with the performance of the investment funds they manage, awards are granted to such employees in the form of cash-settled notional investment funds. The amount delivered depends on the value of the underlying investment funds at the time of vesting. Certain awards, such as replace ment awards issued outside the normal performance year cycle, may take the form of deferred cash under the EOP plan rules. Long-Term Incentive Plan The LTIP is a mandatory deferred share-based compensation plan for GEB members, GMDs and Group or Divisional Vice Chair role holders. The final number of notional shares delivered at vesting depends on two equally-weighted performance metrics: reported return on common equity tier 1 capital (RoCET1) and relative total s hareholder r eturn ( rTSR ), which measures t he performance of the UBS share against an index consisting of Global Systemically Important Banks as determined by the Financial Stability Board. The final number of shares as determined at the end of the three-year performance period will vest in three equal installments in each of the three years following the performance period for GEB members, and cliff vest in the first year following the performance period for GMDs and Vice Chair role holder s. Deferred Contingent Capital Plan (DCCP) The DCCP is a m andatory deferred compensation plan for all employees whose total annual compensation exceeds a specified threshold . DCCP awards take the form of notional additional tier 1 (AT1) capital instruments, which, at the discretion of UBS, can be settled in eithe r a cash payment or a perpetual, marketable AT1 capital instrument. DCCP awards vest in full after five years, and up to seven years for certain regulated employees , unless there is a trigger event. Awards are forfeited if a viability event occurs, i.e., i f FINMA notifies the firm in writing that the DCCP awards must be written down to prevent an insolvency, bankruptcy or failure of UBS, or if UBS receives a commitment of extraordinary support from the public sector that is necessary to prevent such an even t. DCCP awards are also written down for GEB members if the Group’s CET 1 capital ratio falls below 10% and for all other employees if it falls below 7% . As an additional performance condition, GEB members forfeit 20% of their award for each loss-making yea r during the vesting period. Interest payments on DCCP awards are paid at the discretion of UBS. Where interest payments are not permitted, such as for certain regulated employees , the DCCP award reflects the fair value of the granted non-interest-bearing award. Financial advisor variable compensation In line with market practice for US wealth management businesses, the compensation for US financial advisors in Global Wealth Management is composed of production payout and deferred compensation awards. Production payout is primarily based on compensable revenue. Financial advisors may also qualify for deferred compensation awards, which generally vest over a six-year period. The awards are based on strategic performance measures, including production, length of service with the firm and net new business. Production payout rates and deferred compensation awards may be reduced for, among other things, errors, negligence or carelessness, or a failure to comply with the firm’s rules, standards, practices and / or policies and / or applicable laws and regulations. Other compensation plans Equity Plus Plan The Equity Plus Plan is a voluntary employee share pu rchase program that allows eligible employees to purchase UBS shares at market price and receive one additional notional share for every three shares purchased, up to a maximum annual limit. Additional shares vest after a maximum of three years, provided t he employee remains employed with UBS and has retained the purchased shares throughout the holding period. Role-based allowances Some employees may receive a role-based allowance in addition to their base salary. This allowance reflects the market value of a specific role and is fixed, non-forfeitable compensation. Unlike salary, a role-based allowance is paid only as long as the employee is in a specific role. Role-based allowances consist of a cash portion and, where applicable, a blocked UBS share awar d. The compensation expense is recognized in the year of grant. Discontinued deferred compensation plans PartnerPlus Through performance year 2016, financial advisor strategic objective awards were partly granted under the PartnerPlus deferred cash plan, which included amounts awarded by UBS, as well as voluntary participant contributions. Company contributions and voluntary contributions were credited with interest in accordance with the terms of the plan, or upon election credited with notional earnings based on the performance of various mutual funds. Company contributions and interest on both company and voluntary contributions ratably vest in 20% installments 6 to 10 years following grant date. Company contributions and interest on notional earnings on both company and voluntary contributions are forfeitable under certain circumstances. GrowthPlus GrowthPlus is a compensation plan for selected financial advisors whose revenue production and length of service exceed ed defined thresholds from 2010 through 2017. Awards were granted in 2010, 2011, 2015 and 2018. The awards are cash-based and are distributed over seven years, with the exception of 2018 awards, which are distributed over five years. Share delivery obligations Share delivery obligations related to employee share-based compensation awards were 17 2 million shares as of 31 December 20 20 (31 December 2019 : 1 56 million shares). Share delivery obligations are calculated on the basis of undistributed notional share awards, taking applicable performance conditions into account. As of 31 December 2020 , UBS held 157 million t reasury shares (31 December 2019 : 1 25 million) that were available to satisfy share delivery obligations. b) Effect on the income statement Effect on the income statement for the financial year and future periods The table below provides info rmation about compensation expenses related to total v ariable compensation, including financial advisor variable compensation, that were recognized in the financial year ended 31 December 2020 , as well as expenses that were deferred and will be recognized in the income statement for 2021 and later. The majority of expenses deferred to 20 2 1 and later that are rel ated to the 2020 performance year pertain to awards granted in February 20 2 1 . The total unamortized compensation expense for unvested share-based awards granted up to 31 December 2020 will be recognized in future periods over a weighted average period of 2.9 years. During the third quarter of 2020, UBS modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees, resul ting in the recognition of USD 314 million in expenses for variable compensation – performance awards. The full year effect was an expense of approximately USD 2 4 0 million. Refer to Note 1b for more information. Variable compensation including financial advisor variable compensation Expenses recognized in 2020 Expenses deferred to 2021 and later 1 USD million Related to the 2020 performance year Related to prior performance years Total Related to the 2020 performance year Related to prior performance years Total Non-deferred cash 2,167 (26) 2,141 0 0 0 Deferred compensation awards 341 727 1,068 756 288 1,044 of which: Equity Ownership Plan 137 327 463 306 69 376 of which: Deferred Contingent Capital Plan 112 351 463 280 196 476 of which: Long-Term Incentive Plan 42 11 54 50 10 61 of which: Asset Management EOP 49 39 88 120 12 132 Variable compensation – performance awards 2,508 701 3,209 756 288 1,044 Variable compensation – other 2 126 94 220 181 192 374 Total variable compensation excluding financial advisor variable compensation 2,634 795 3,429 938 480 1,418 Financial advisor variable compensation 3,356 233 3,589 350 602 952 of which: non-deferred cash 3,154 0 3,154 0 0 0 of which: deferred share-based awards 69 50 119 79 135 214 of which: deferred cash-based awards 133 183 316 271 467 738 Compensation commitments with recruited financial advisors 3 22 480 502 473 1,682 2,155 Total FA variable compensation 3,378 713 4,091 822 2,284 3,106 Total variable compensation including FA variable compensation 6,012 1,508 7,520 4 1,760 2,764 4,524 1 Estimate as of 31 December 2020. Actual amounts to be expensed in future periods may vary, e.g., due to forfeiture of awards. 2 Comprised of replacement payments, forfeiture credits, severance payments, retention plan payments and interest expense related to the Deferred Contingent Capital Plan. 3 Reflects expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements. Amounts reflected as deferred expenses represent the maximum deferred exposure as of the balance sheet date. 4 Includes USD 686 million in expenses related to share-based compensation (performance awards: USD 517 million; other variable compensation: USD 50 million; financial advisor compensation: USD 119 million). A further USD 100 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 4 million related to role-based allowances; social security: USD 54 million; other personnel expenses: USD 42 million related to the Equity Plus Plan). Total personnel expense related to share-based equity-settled compensation excluding social security was USD 691 million. Variable compensation including financial advisor variable compensation (continued) Expenses recognized in 2019 Expenses deferred to 2020 and later 1 USD million Related to the 2019 performance year Related to prior performance years Total Related to the 2019 performance year Related to prior performance years Total Non-deferred cash 1,894 (26) 1,868 0 0 0 Deferred compensation awards 299 588 887 429 608 1,036 of which: Equity Ownership Plan 122 300 422 205 219 424 of which: Deferred Contingent Capital Plan 113 262 375 173 365 538 of which: Long-Term Incentive Plan 39 0 39 25 0 25 of which: Asset Management EOP 25 26 51 26 23 49 Variable compensation – performance awards 2,193 562 2,755 429 608 1,036 Variable compensation – other 2 159 88 246 117 232 349 Total variable compensation excluding financial advisor variable compensation 2,352 650 3,001 545 840 1,385 Financial advisor variable compensation 3,233 268 3,501 197 710 907 of which: non-deferred cash 3,064 0 3,064 0 0 0 of which: deferred share-based awards 57 48 106 54 130 183 of which: deferred cash-based awards 112 219 331 144 580 724 Compensation commitments with recruited financial advisors 3 32 510 542 350 1,617 1,967 Total FA variable compensation 3,265 778 4,043 548 2,327 2,874 Total variable compensation including FA variable compensation 5,617 1,428 7,045 4 1,093 3,166 4,259 1 Estimate as of 31 December 2019. Actual amounts expensed may vary, e.g., due to forfeiture of awards. 2 Comprised of replacement payments, forfeiture credits, severance payments, retention plan payments and interest expense related to the Deferred Contingent Capital Plan. 3 Reflects expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements. Amounts reflected as deferred expenses represent the maximum deferred exposure as of the balance sheet date. 4 Includes USD 610 million in expenses related to share-based compensation (performance awards: USD 461 million; other variable compensation: USD 43 million; financial advisor compensation: USD 106 million). A further USD 61 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 10 million related to role-based allowances; social security: USD 25 million; other personnel expenses: USD 27 million related to the Equity Plus Plan). Total personnel expense related to share-based equity-settled compensation excluding social security was USD 619 million. Variable compensation including financial advisor variable compensation (continued) Expenses recognized in 2018 Expenses deferred to 2019 and later 1 USD million Related to the 2018 performance year Related to prior performance years Total Related to the 2018 performance year Related to prior performance years Total Non-deferred cash 2,089 (32) 2,057 0 0 0 Deferred compensation awards 373 565 938 585 653 1,238 of which: Equity Ownership Plan 217 309 526 325 244 570 of which: Deferred Contingent Capital Plan 131 226 357 238 382 620 of which: Asset Management EOP 25 28 53 22 26 48 of which: other performance awards 0 2 2 0 1 1 Variable compensation – performance awards 2,461 534 2,995 585 653 1,238 Variable compensation – other 2 162 80 243 180 269 450 Total variable compensation excluding financial advisor variable compensation 2,624 614 3,238 766 922 1,688 Financial advisor variable compensation 3,233 237 3,470 128 639 767 of which: non-deferred cash 3,089 0 3,089 0 0 0 of which: deferred share-based awards 51 44 95 52 131 183 of which: deferred cash-based awards 93 193 286 76 507 584 Compensation commitments with recruited financial advisors 3 33 551 584 357 1,883 2,240 Total FA variable compensation 3,266 789 4,054 484 2,522 3,006 Total variable compensation including FA variable compensation 5,889 1,403 7,292 4 1,250 3,444 4,694 1 Estimate as of 31 December 2018. Actual amounts expensed may vary, e.g., due to forfeiture of awards. 2 Comprised of replacement payments, forfeiture credits, severance payments, retention plan payments and interest expense related to the Deferred Contingent Capital Plan. 3 Reflects expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements. Amounts reflected as deferred expenses represent the maximum deferred exposure as of the balance sheet date. 4 Includes USD 634 million in expenses related to share-based compensation (performance awards: USD 526 million; other variable compensation: USD 12 million; financial advisor compensation: USD 95 million). A further USD 49 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 15 million related to role-based allowances; social security: USD 8 million; other personnel expenses: USD 26 million related to the Equity Plus Plan). Total personnel expense related to share-based equity-settled compensation excluding social security was USD 676 million. c) Outsta nding share-based compensation awards Share and performance share awards Movements in outstanding share-based awards during 20 20 and 201 9 are provided in the table below. Movements in outstanding share-based compensation awards Number of shares 2020 Weighted average grant date fair value (USD) Number of shares 2019 Weighted average grant date fair value (USD) Outstanding, at the beginning of the year 156,064,763 14 146,845,027 16 Awarded during the year 72,250,157 11 77,641,909 11 Distributed during the year (46,899,362) 15 (61,152,200) 13 Forfeited during the year (6,515,164) 13 (7,269,974) 14 Outstanding, at the end of the year 174,900,395 12 156,064,763 14 of which: shares vested for accounting purposes 118,260,527 79,486,447 The total carrying amount of the liability related to cash-settled share-based awards as of 31 December 20 20 and 31 December 201 9 was USD 36 million and USD 3 4 million, respectively. d) Valuation UBS share awards UBS measures compensation expense based on the average market price of the UBS share on the grant date as quoted on the SIX Swiss Exchange, taking into consideration post-vesting sale and hedge restrictions, non-vesting conditions and market conditions, where applicable. The fair value of the share awards subject to post-vesting sale and hedge restrictions is discou nted on the basis of the duration of the post-vesting restriction and is referenced to the cost of purchasing an at-the-money European put option for the term of the transfer restriction. The weighted average discount for share and performance share awards granted during 2020 was approximately 23.8% ( 2019 : 22.6 %) of the market price of the UBS share. The g rant date fair value of notional shares without dividend entitlements also includes a deduction for the present value of future expected dividends t o be paid between the grant date and distribution.
UBS AG
Disclosure Equity Participation And Other Compensation Plans [Line Items]
Employee benefits: variable compensation [text block]	Note 27 Employee benefits: variable compensation a) Plans offered UBS has several share-based and other deferred compensation plans that align the interests of Group Executive Board (GEB) members and other employees with the interests of investors. Share based payment awards are granted in the form of notional shares and, where permitted, carry a dividend equivalent that may be paid in notional shares or cash and that vest on the same terms and conditions as the award. Awards are settled by delivering UBS shares at vesting, except in jurisdictions where this is not permitted for legal or tax reasons. Deferred compensation awards are generally forfeitable upon, among other circumstances, voluntary termination of employment with UBS. These compensation plans are also designed to meet regulatory requirements and include special pro visions for regulated employees. The most significant deferred compensation plans are described below . For the majority of variable compensation awards granted under such plans to employees of UBS AG, the grantor entity is UBS Group AG. Expenses associate d with these awards are charged by UBS Group AG to UBS AG. For the purpose of this Note, references to shares refer to UBS Group AG shares. › Refer to Note 1 a item 5 for a description of the accounting policy related to share-based and other deferred compensation plans Mandatory deferred compensation plans Equity Ownership Plan (EOP) The EOP is a mandatory deferred share-based compensation plan for all employees whose total annual compensation exceeds a specified threshold, other than GEB mem bers, Group Managing Directors (GMDs) and Group or Divisional Vice Chair role holders who are granted share-based awards under the new Long-Term Incentive Plan (LTIP) first granted in 2020. Awards generally vest in equal installments after two and three ye ars following grant, provided that vesting conditions are satisfied. Awards granted to GEB members in 2019 and prior years generally vest three, four and five years after grant. EOP awards granted to GEB members and GMDs in 2019 and prior years, as well as EOP awards granted to certain other employees will only vest if certain performance measures both for the Group and the applicable business division are met. In order to align deferred compensation of certain Asset Management employees with the performan ce of the investment funds they manage, awards are granted to such employees in the form of cash-settled notional investment funds. The amount delivered depends on the value of the underlying investment funds at the time of vesting. Certain awards, such a s replacement awards issued outside the normal performance year cycle, may take the form of deferred cash under the EOP plan rules. Long-Term Incentive Plan The LTIP is a mandatory deferred share-based compensation plan for GEB members, GMDs and Group or D ivisional Vice Chair role holders. The final number of notional shares delivered at vesting depends on two equally-weighted performance metrics: reported return on common equity tier 1 capital (RoCET1) and relative total shareholder return (rTSR), which measures the performance of the UBS s hare against an index consisting of Global Systemically Important Banks as determined by the Financial Stability Board. The final number of shares as determined at the end of the three-year performance period will vest in three equal installments in each of the three years following the performance period for GEB members, and cliff vest in the first year following the performance period for GMDs and Vice Chair role holders . Deferred Contingent Capital Plan (DCCP) The DCCP is a mandatory deferred compensati on plan for all employees whose total annual compensation exceeds a specified threshold . DCCP awards take the form of notional additional tier 1 (AT1) capital instruments, which, at the discretion of UBS, can be settled in either a cash payment or a perpet ual, marketable AT1 capital instrument. DCCP awards vest in full after five years, and up to seven years for certain regulated employees, unless there is a trigger event. Awards are forfeited if a viability event occurs, i.e., if FINMA notifies the firm in writing that the DCCP awards must be written down to prevent an insolvency, bankruptcy or failure of UBS, or if UBS receives a commitment of extraordinary support from the public sector that is necessary to prevent such an event. DCCP awards are also writ ten down for GEB members if the Group’s CET1 capital ratio falls below 10% and for all other employees if it falls below 7%. As an additional performance condition, GEB members forfeit 20% of their award for each loss-making year during the vesting period. Interest payments on DCCP awards are paid at the discretion of UBS. Where interest payments are not permitted, such as for certain regulated employees, the DCCP award reflects the fair value of the granted non-interest-bearing award . F inancial advisor variable compensation In line with market practice for US wealth management businesses, the compensation for US financial advisors in Global Wealth Management is composed of production payout and deferred compensation awards. Production payout is primarily based on compensable revenue. Financial advisors may also qualify for deferred compensation awards, which generally vest over a six-year period. The awards are based on strategic performance measures, including production, length of service with the firm and net new business. Production payout rates and deferred compensation awards may be reduced for, among other things, errors, negligence or carelessness, or a failure to comply with the firm’s rules, standards, practices and / or policies and / or applicable laws and regulatio ns . Other compensation plans Equity Plus Plan The Equity Plus Plan is a voluntary employee share purchase program that allows eligible employees to purchase UBS shares at market price and receive one additional notional share for every three shares purchas ed, up to a maximum annual limit. Additional shares vest after a maximum of three years, provided the employee remains employed with UBS and has retained the purchased shares throughout the holding period. Role-based allowances Some employees may receive a role-based allowance in addition to their base salary. This allowance reflects the market value of a specific role and is fixed, non-forfeitable compensation. Unlike salary, a role-based allowance is paid only as long as the em ployee is in a specific role. Role-based allowances consist of a cash portion and, where applicable, a blocked UBS share award. The compensation expense is recognized in the year of grant. Discontinued deferred compensation plans PartnerPlus Through perfo rmance year 2016, financial advisor strategic objective awards were partly granted under the PartnerPlus deferred cash plan, which included amounts awarded by UBS, as well as voluntary participant contributions. Company contributions and voluntary contribu tions were credited with interest in accordance with the terms of the plan, or upon election credited with notional earnings based on the performance of various mutual funds. Company contributions and interest on both company and voluntary contributions ra tably vest in 20% installments 6 to 10 years following grant date. Company contributions and interest on notional earnings on both company and voluntary contributions are forfeitable under certain circumstances . GrowthPlus GrowthPlus is a compensation plan for selected financial advisors whose revenue production and length of service exceeded defined thresholds from 2010 through 2017. Awards were granted in 2010, 2011, 2015 and 2018. The awards are cash-based and are distributed over seven years, with the e xception of 2018 awards, which are distributed over five years . b) Effect on the income statement Effect on the income statement for the financial year and future periods The table below provides info rmation about compensation expenses related to total variable compensation, including financial advisor variable compensation, that were recognized in the financial year ended 31 December 2020 , as well as expenses that were deferred and will be recognized in the income statement for 2021 and later. The majority of expenses deferred to 2021 and later that are related to the 2020 performance year pert ain to awards granted in February 2021 . The total unamortized compensation expense for unvested share-based awards granted up to 31 December 2020 will be recognized in future periods over a weighted average period of 2.9 years. During the third quarter of 2020, UBS AG modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees, resulting in the recognition of USD 303 million in expenses for variable compensation – performance awards. The full year effect was an expense of approximately USD 2 40 million. Refer to Note 1b for more information. Variable compensation including financial advisor variable compensation Expenses recognized in 2020 Expenses deferred to 2021 and later 1 USD million Related to the 2020 performance year Related to prior performance years Total Related to the 2020 performance year Related to prior performance years Total Non-deferred cash 1,948 (29) 1,920 0 0 0 Deferred compensation awards 329 704 1,034 734 277 1,011 of which: Equity Ownership Plan 131 315 446 298 67 365 of which: Deferred Contingent Capital Plan 108 339 448 271 189 459 of which: Long-Term Incentive Plan 41 11 52 46 9 55 of which: Asset Management EOP 49 39 88 120 12 132 Variable compensation – performance awards 2,278 675 2,953 734 277 1,011 Variable compensation – other 2 109 92 201 176 189 364 Total variable compensation excluding financial advisor variable compensation 2,387 768 3,155 909 465 1,375 Financial advisor variable compensation 3,356 233 3,589 350 602 952 of which: non-deferred cash 3,154 0 3,154 0 0 0 of which: deferred share-based awards 69 50 119 79 135 214 of which: deferred cash-based awards 133 183 316 271 467 738 Compensation commitments with recruited financial advisors 3 22 480 502 473 1,682 2,155 Total FA variable compensation 3,378 713 4,091 822 2,284 3,106 Total variable compensation including FA variable compensation 5,765 1,481 7,246 4 1,732 2,749 4,481 1 Estimate as of 31 December 2020. Actual amounts to be expensed in future periods may vary, e.g., due to forfeiture of awards. 2 Comprised of replacement payments, forfeiture credits, severance payments, retention plan payments and interest expense related to the Deferred Contingent Capital Plan. 3 Reflects expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements. Amounts reflected as deferred expenses represent the maximum deferred exposure as of the balance sheet date. 4 Includes USD 666 million in expenses related to share-based compensation (performance awards: USD 498 million; other variable compensation: USD 49 million; financial advisor compensation: USD 119 million). A further USD 88 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 4 million related to role-based allowances; social security: USD 51 million; other personnel expenses: USD 34 million related to the Equity Plus Plan). Variable compensation including financial advisor variable compensation (continued) Expenses recognized in 2019 Expenses deferred to 2020 and later 1 USD million Related to the 2019 performance year Related to prior performance years Total Related to the 2019 performance year Related to prior performance years Total Non-deferred cash 1,706 (24) 1,682 0 0 0 Deferred compensation awards 287 576 863 413 592 1,005 of which: Equity Ownership Plan 115 294 410 198 213 412 of which: Deferred Contingent Capital Plan 109 256 365 166 356 521 of which: Long-Term Incentive Plan 38 0 38 23 0 23 of which: Asset Management EOP 25 26 51 26 23 49 Variable compensation – performance awards 1,993 553 2,545 413 592 1,005 Variable compensation – other 2 140 85 225 115 228 343 Total variable compensation excluding financial advisor variable compensation 2,133 638 2,770 528 820 1,348 Financial advisor variable compensation 3,233 268 3,501 197 710 907 of which: non-deferred cash 3,064 0 3,064 0 0 0 of which: deferred share-based awards 57 48 106 54 130 183 of which: deferred cash-based awards 112 219 331 144 580 724 Compensation commitments with recruited financial advisors 3 32 510 542 350 1,617 1,967 Total FA variable compensation 3,265 778 4,043 548 2,327 2,874 Total variable compensation including FA variable compensation 5,398 1,416 6,814 4 1,076 3,146 4,222 1 Estimate as of 31 December 2019. Actual amounts expensed may vary, e.g., due to forfeiture of awards. 2 Comprised of replacement payments, forfeiture credits, severance payments, retention plan payments and interest expense related to the Deferred Contingent Capital Plan. 3 Reflects expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements. Amounts reflected as deferred expenses represent the maximum deferred exposure as of the balance sheet date. 4 Includes USD 595 million in expenses related to share-based compensation (performance awards: USD 448 million; other variable compensation: USD 42 million; financial advisor compensation: USD 106 million). A further USD 54 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 10 million related to role-based allowances; social security: USD 23 million; other personnel expenses: USD 22 million related to the Equity Plus Plan). Variable compensation including financial advisor variable compensation (continued) Expenses recognized in 2018 Expenses deferred to 2019 and later 1 USD million Related to the 2018 performance year Related to prior performance years Total Related to the 2018 performance year Related to prior performance years Total Non-deferred cash 1,896 (26) 1,870 0 0 0 Deferred compensation awards 360 564 924 570 638 1,208 of which: Equity Ownership Plan 208 299 507 316 238 554 of which: Deferred Contingent Capital Plan 126 235 361 232 373 605 of which: Asset Management EOP 25 28 53 22 26 48 of which: other performance awards 0 2 2 0 1 1 Variable compensation – performance awards 2,256 538 2,794 570 638 1,208 Variable compensation – other 2 144 75 220 178 264 442 Total variable compensation excluding financial advisor variable compensation 2,400 613 3,013 748 902 1,650 Financial advisor variable compensation 3,233 237 3,470 128 639 767 of which: non-deferred cash 3,089 0 3,089 0 0 0 of which: deferred share-based awards 51 44 95 52 131 183 of which: deferred cash-based awards 93 193 286 76 507 584 Compensation commitments with recruited financial advisors 3 33 551 584 357 1,883 2,240 Total FA variable compensation 3,266 789 4,054 484 2,522 3,006 Total variable compensation including FA variable compensation 5,666 1,402 7,068 4 1,233 3,424 4,656 1 Estimate as of 31 December 2018. Actual amounts expensed may vary, e.g., due to forfeiture of awards. 2 Comprised of replacement payments, forfeiture credits, severance payments, retention plan payments and interest expense related to the Deferred Contingent Capital Plan. 3 Reflects expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements. Amounts reflected as deferred expenses represent the maximum deferred exposure as of the balance sheet date. 4 Includes USD 612 million in expenses related to share-based compensation (performance awards: USD 507 million; other variable compensation: USD 10 million; financial advisor compensation: USD 95 million). A further USD 44 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 15 million related to role-based allowances; social security: USD 7 million; other personnel expenses: USD 22 million related to the Equity Plus Plan). c) Outstanding share-based compensation awards Share and performance share awards Movements in outstanding share-based awards under the EOP during 2020 and 2019 are provided in the table below. The awards presented are granted by UBS AG, but are based on UBS Group AG shares. Movements in outstanding share-based compensation awards Number of shares 2020 Weighted average grant date fair value (USD) Number of shares 2019 Weighted average grant date fair value (USD) Outstanding, at the beginning of the year 90,443 14 201,793 15 Awarded during the year 19,229 11 29,092 11 Distributed during the year (55,114) 14 (140,441) 14 Forfeited during the year 0 0 0 0 Outstanding, at the end of the year 54,557 13 90,443 14 of which: shares vested for accounting purposes 53,216 56,492 The total carrying amount of the liability related to cash-settled share-based awards as of 31 December 20 20 and 31 December 2019 was USD 1 million. d) Valuation UBS share awards UBS measures compensation expense based on the ave rage market price of the UBS share on the grant date as quoted on the SIX Swiss Exchange, taking into consideration post-vesting sale and hedge restrictions, non-vesting conditions and market conditions, where applicable. The fair value of the share awards subject to post-vesting sale and hedge restrictions is discounted on the basis of the duration of the post-vesting restriction and is referenced to the cost of purchasing an at-the-money European put option for the term of the transfer restriction. The w eighted average discount for share and performance share awards granted during 2020 was approximately 23.8 % ( 2019 : 22.6 %) of the market price of the UBS share. The grant date fair value of notional shares without dividend entitlements also includes a deduction for the present value of future expected dividends to be paid between the grant date and distribution.

Interests in subsidiaries

Interests in subsidiaries	12 Months Ended
Interests in subsidiaries	Dec. 31, 2020
Interests In Subsidiaries [Line Items]
Disclosure Of Interests In Subsidiaries Explanatory	Note 28 Interests in subsidiaries and other entities a) Interests in subsidiaries UBS defines its significant subsidiaries as those entities that, either individually or in aggregate, contribute significantly to the Group’s financial position or results of operations, based on a number of criteria, including the subsidiaries’ equity and their contribution to the Group’s total assets and profit or loss before tax, in accordanc e with the requirements set by IFRS 12, Swiss regulations and the rules of the US Securities and Exchange Commission (SEC). Individually significant subsidiaries The two tables below list the Group’s individually significant sub sidiaries as of 31 December 2020 . Unless otherwise stated, the subsidiaries listed below have share capital consisting solely of ordinary shares that are held entirely by the Group, and the proportion of ownership interest held is equal to the voting rights held by the Group. Th e country where the respective registered office is located is also the principal place of business. UBS AG operates through a global network of branches and a significant proportion of its business activity is conducted outside Switzerland, including in t he UK, the US, Singapore, Hong Kong and other countries. UBS Europe SE has branches and offices in a number of EU Member States, including Germany, Italy, Luxembourg, Spain and Austria . Share capital is provided in the currency of the legally registered of fice. Individually significant subsidiaries of UBS Group AG as of 31 December 2020 Company Registered office Share capital in million Equity interest accumulated in % UBS AG Zurich and Basel, Switzerland CHF 385.8 100.0 UBS Business Solutions AG 1 Zurich, Switzerland CHF 1.0 100.0 1 UBS Business Solutions AG holds subsidiaries in Poland, China and India. Individually significant subsidiaries of UBS AG as of 31 December 2020 1 Company Registered office Primary business Share capital in million Equity interest accumulated in % UBS Americas Holding LLC Wilmington, Delaware, USA Group Functions USD 3,150.0 2 100.0 UBS Americas Inc. Wilmington, Delaware, USA Group Functions USD 0.0 100.0 UBS Asset Management AG Zurich, Switzerland Asset Management CHF 43.2 100.0 UBS Bank USA Salt Lake City, Utah, USA Global Wealth Management USD 0.0 100.0 UBS Europe SE Frankfurt, Germany Global Wealth Management EUR 446.0 100.0 UBS Financial Services Inc. Wilmington, Delaware, USA Global Wealth Management USD 0.0 100.0 UBS Securities LLC Wilmington, Delaware, USA Investment Bank USD 1,283.1 3 100.0 UBS Switzerland AG Zurich, Switzerland Personal & Corporate Banking CHF 10.0 100.0 1 Includes direct and indirect subsidiaries of UBS AG. 2 Consists of common share capital of USD 1,000 and non-voting preferred share capital of USD 3,150,000,000. 3 Consists of common share capital of USD 100,000 and non-voting preferred share capital of USD 1,283,000,000. Other subsidiaries The table below lists other direct and indirect subsidiaries of UBS AG that are not individually significant but that contribute to the Group’s total assets and aggregated profit before tax thresholds and are thereby disclosed in accordance with the requir ements set by the SEC. Other subsidiaries of UBS AG as of 31 December 2020 Company Registered office Primary business Share capital in million Equity interest accumulated in % UBS Asset Management (Americas) Inc. Wilmington, Delaware, USA Asset Management USD 0.0 100.0 UBS Asset Management (Hong Kong) Limited Hong Kong, Hong Kong Asset Management HKD 254.0 100.0 UBS Asset Management Life Ltd London, United Kingdom Asset Management GBP 15.0 100.0 UBS Asset Management Switzerland AG Zurich, Switzerland Asset Management CHF 0.5 100.0 UBS Asset Management (UK) Ltd London, United Kingdom Asset Management GBP 125.0 100.0 UBS Business Solutions US LLC Wilmington, Delaware, USA Group Functions USD 0.0 100.0 UBS Credit Corp. Wilmington, Delaware, USA Global Wealth Management USD 0.0 100.0 UBS (France) S.A. Paris, France Global Wealth Management EUR 133.0 100.0 UBS Fund Management (Luxembourg) S.A. Luxembourg, Luxembourg Asset Management EUR 13.0 100.0 UBS Fund Management (Switzerland) AG Basel, Switzerland Asset Management CHF 1.0 100.0 UBS (Monaco) S.A. Monte Carlo, Monaco Global Wealth Management EUR 49.2 100.0 UBS Realty Investors LLC Boston, Massachusetts, USA Asset Management USD 9.0 100.0 UBS Securities Australia Ltd Sydney, Australia Investment Bank AUD 0.3 1 100.0 UBS Securities Hong Kong Limited Hong Kong, Hong Kong Investment Bank HKD 3,154.2 100.0 UBS Securities Japan Co., Ltd. Tokyo, Japan Investment Bank JPY 32,100.0 100.0 UBS Securities Pte. Ltd. Singapore, Singapore Investment Bank SGD 420.4 100.0 1 Includes a nominal amount relating to redeemable preference shares. Consolidated structured entities UBS consolidates a structured entity ( an SE) if it has power over the relevant activities of the entity, exposure to variable returns and the ability to use its power to affect its returns. Consolidated SEs include certain investment funds, securitization vehicles and client investment vehic les. UBS has no individually significant subsidiaries that are SEs. In 2020 and 2019 , the Group did not enter into any contractual obligation that could require the Group to provide financial support to consolidated SEs. In addition, the Group did not provide support, financial or otherwise, to a consolidated SE when the Group was not contractually obligated to do so, nor does the Group have an y intention to do so in the future. Further more , the Group did not provide support, financial or otherwise, to a previously unconsolidated SE that resulted in the Group controlling the SE during the reporting period.
UBS AG
Interests In Subsidiaries [Line Items]
Disclosure Of Interests In Subsidiaries Explanatory	Note 28 Interests in subsidiaries and other entities a) Interests in subsidiaries UBS AG d efines its significant subsidiaries as those entities that, either individually or in aggregate, contribute significantly to UBS AG ’s financial position or results of operations, based on a number of criteria, including the subsidiaries’ equity and their c ontribution to UBS AG ’s total assets and profit or loss before tax, in accordance with the requirements set by IFRS 12, Swiss regulations and the rules of the US Securities and Exchange Commission (SEC). Individually significant subsidiaries The table belo w list s UBS AG ’s individually significant sub sidiaries as of 31 December 2020 . Unless otherwise stated, the subsidiaries listed below have share capital consisting solely of ordinary shares that are held entirely by UBS AG , and the proportion of ow nership interest held is equal to the voting rights held by UBS AG . The country where the respective registered office is located is also the principal place of business. UBS AG operates through a global network of branches and a significant proportion of its business activity is conducted outside Switzerland, including in the UK, the US, Singapore, Hong Kong and other countries. UBS Europe SE has branches and offices in a number of EU Member States, including Germany, Italy, Luxembourg, Spain and Austria . Share capital is provided in the currency of the legally registered office. Individually significant subsidiaries of UBS Group AG as of 31 December 2020 Company Registered office Share capital in million Equity interest accumulated in % UBS AG Zurich and Basel, Switzerland CHF 385.8 100.0 UBS Business Solutions AG 1 Zurich, Switzerland CHF 1.0 100.0 1 UBS Business Solutions AG holds subsidiaries in Poland, China and India. Individually significant subsidiaries of UBS AG as of 31 December 2020 1 Company Registered office Primary business Share capital in million Equity interest accumulated in % UBS Americas Holding LLC Wilmington, Delaware, USA Group Functions USD 3,150.0 2 100.0 UBS Americas Inc. Wilmington, Delaware, USA Group Functions USD 0.0 100.0 UBS Asset Management AG Zurich, Switzerland Asset Management CHF 43.2 100.0 UBS Bank USA Salt Lake City, Utah, USA Global Wealth Management USD 0.0 100.0 UBS Europe SE Frankfurt, Germany Global Wealth Management EUR 446.0 100.0 UBS Financial Services Inc. Wilmington, Delaware, USA Global Wealth Management USD 0.0 100.0 UBS Securities LLC Wilmington, Delaware, USA Investment Bank USD 1,283.1 3 100.0 UBS Switzerland AG Zurich, Switzerland Personal & Corporate Banking CHF 10.0 100.0 1 Includes direct and indirect subsidiaries of UBS AG. 2 Consists of common share capital of USD 1,000 and non-voting preferred share capital of USD 3,150,000,000. 3 Consists of common share capital of USD 100,000 and non-voting preferred share capital of USD 1,283,000,000. Other subsidiaries The table below lists other direct and indirect subsidiaries of UBS AG that are not individually significant but that contribute to UBS AG ’s total assets and aggregated profit before tax thresholds and are thereby disclosed in accordance with the requirements set by the SEC. Other subsidiaries of UBS AG as of 31 December 2020 Company Registered office Primary business Share capital in million Equity interest accumulated in % UBS Asset Management (Americas) Inc. Wilmington, Delaware, USA Asset Management USD 0.0 100.0 UBS Asset Management (Hong Kong) Limited Hong Kong, Hong Kong Asset Management HKD 254.0 100.0 UBS Asset Management Life Ltd London, United Kingdom Asset Management GBP 15.0 100.0 UBS Asset Management Switzerland AG Zurich, Switzerland Asset Management CHF 0.5 100.0 UBS Asset Management (UK) Ltd London, United Kingdom Asset Management GBP 125.0 100.0 UBS Business Solutions US LLC Wilmington, Delaware, USA Group Functions USD 0.0 100.0 UBS Credit Corp. Wilmington, Delaware, USA Global Wealth Management USD 0.0 100.0 UBS (France) S.A. Paris, France Global Wealth Management EUR 133.0 100.0 UBS Fund Management (Luxembourg) S.A. Luxembourg, Luxembourg Asset Management EUR 13.0 100.0 UBS Fund Management (Switzerland) AG Basel, Switzerland Asset Management CHF 1.0 100.0 UBS (Monaco) S.A. Monte Carlo, Monaco Global Wealth Management EUR 49.2 100.0 UBS Realty Investors LLC Boston, Massachusetts, USA Asset Management USD 9.0 100.0 UBS Securities Australia Ltd Sydney, Australia Investment Bank AUD 0.3 1 100.0 UBS Securities Hong Kong Limited Hong Kong, Hong Kong Investment Bank HKD 3,154.2 100.0 UBS Securities Japan Co., Ltd. Tokyo, Japan Investment Bank JPY 32,100.0 100.0 UBS Securities Pte. Ltd. Singapore, Singapore Investment Bank SGD 420.4 100.0 1 Includes a nominal amount relating to redeemable preference shares. Consolidated structured entities UBS AG consolidates a structured entity ( an SE) if it has po wer over the relevant activities of the entity, exposure to variable returns and the ability to use its power to affect its returns. Consolidated SEs include certain investment funds, securitization vehicles and client investment vehicles. UBS AG has no individually significant subsidiaries that are SEs. In 2020 and 2019 , UBS AG did not enter into any contractual obligation that could require UBS AG to provide financial support to consolidated SEs. In addition, UBS AG did not provide support, financial or otherwise, to a consolidated SE when UBS AG was not contractually obligated to do so, nor does UBS AG have an y intention to do so in the future. Further more , UBS AG did not provide support, financial or otherwise, to a previously unconsolidated SE that resulted in UBS AG controlling the SE during the reporting period.

Interests in associates and joi

Interests in associates and joint ventures	12 Months Ended
Interests in associates and joint ventures	Dec. 31, 2020
Interests In Associates And Joint Ventures [Line Items]
Disclosure of interests in associates and joint ventures [text block]	b) Interests in associates and joi nt ventures As of 31 December 2020 and 2019 , no associate or joint venture was individually material to the Group. In addition, there were no significant restrictions on the ability of associates or joint ventures to transfer funds to UBS Group AG or its subsidiaries in the form of cash dividends or to repay loans or advances made . There were no quoted market prices for any associates or joint ventures of the Group. In the third quarter of 2020, UBS completed the sale of a 51.2% stake in Fondcenter AG to Clearstream and deconsolidated the entity in accordance with IFRS 10, Consolidated Financial Statements . The retained minority shareholding of 48.8% is accounted for as an investment in an associate with a carrying amount of USD 399 million as of 31 December 2020 . › Refer to Note 29 for more information Investments in associates and joint ventures USD million 2020 2019 Carrying amount at the beginning of the year 1,051 1,099 Additions 1 388 0 Disposals 0 0 Share of comprehensive income 83 25 of which: share of net profit 2 84 46 of which: share of other comprehensive income 3 (1) (21) Share of changes in retained earnings (40) 0 Dividends received (33) (83) Impairment 0 (1) Foreign currency translation 108 11 Carrying amount at the end of the year 1,557 1,051 of which: associates 1,513 1,010 of which: SIX Group AG, Zurich 4 965 887 of which: Clearstream Fund Centre AG, Zurich 1 399 of which: other associates 150 123 of which: joint ventures 44 41 1 On 30 September 2020, UBS completed the sale of a 51.2% stake in Fondcenter AG to Clearstream and deconsolidated the entity in accordance with IFRS 10, Consolidated Financial Statements. The retained minority shareholding of 48.8% is accounted for as an associate and increased the investments in associates by USD 385 million upon completion of the transaction. Refer to Note 29 for more information. 2 For 2020, consists of USD 64 million from associates and USD 19 million from joint ventures. For 2019, consists of USD 28 million from associates and USD 18 million from joint ventures. 3 For 2020, consists of negative USD 1 million from associates. For 2019, consists of negative USD 22 million from associates and USD 1 million from joint ventures. 4 In 2020, UBS AG’s equity interest amounts to 17.31%. UBS AG is represented on the Board of Directors.
UBS AG
Interests In Associates And Joint Ventures [Line Items]
Disclosure of interests in associates and joint ventures [text block]	b) Interests in associates and joint ventures A s of 31 December 2020 and 2019 , no associate or joint venture was individually material to UBS AG . In addition, there were no significant restrictions on the ability of associates or joint ventures to transfer funds to UBS AG or its subsidiaries in the form of cash dividends or to repay loans or advances made . There were no quoted market prices for any associates or joint ventures of UBS AG . In the third quarter of 2020, UBS AG completed the sale of a 51.2% stake in Fondcenter AG to Clearstream and deconsoli dated the entity in accordance with IFRS 10, Consolidated Financial Statements . The retained minority shareholding of 48.8% is accounted for as an investment in an associate with a carrying amount of USD 399 million as of 31 December 2020 . › Refer to Note 29 for more information Investments in associates and joint ventures USD million 2020 2019 Carrying amount at the beginning of the year 1,051 1,099 Additions 1 388 0 Disposals 0 0 Share of comprehensive income 83 25 of which: share of net profit 2 84 46 of which: share of other comprehensive income 3 (1) (21) Share of changes in retained earnings (40) 0 Dividends received (33) (83) Impairment 0 (1) Foreign currency translation 108 11 Carrying amount at the end of the year 1,557 1,051 of which: associates 1,513 1,010 of which: SIX Group AG, Zurich 4 965 887 of which: Clearstream Fund Centre AG, Zurich 1 399 of which: other associates 150 123 of which: joint ventures 44 41 1 On 30 September 2020, UBS AG completed the sale of a 51.2% stake in Fondcenter AG to Clearstream and deconsolidated the entity in accordance with IFRS 10, Consolidated Financial Statements. The retained minority shareholding of 48.8% is accounted for as an associate and increased the investments in associates by USD 385 million upon completion of the transaction. Refer to Note 29 for more information. 2 For 2020, consists of USD 64 million from associates and USD 19 million from joint ventures. For 2019, consists of USD 28 million from associates and USD 18 million from joint ventures. 3 For 2020, consists of negative USD 1 million from associates. For 2019, consists of negative USD 22 million from associates and USD 1 million from joint ventures. 4 In 2020, UBS AG’s equity interest amounts to 17.31%. UBS AG is represented on the Board of Directors.

Interests in unconsolidated str

Interests in unconsolidated structured entities	12 Months Ended
Interests in unconsolidated structured entities	Dec. 31, 2020
Interests In Unconsolidated Structured Entities [Line Items]
Disclosure Of Unconsolidated Structured Entities Explanatory	c) Interests in unconsolidated structure d entities UBS is considered to sponsor another entity if, in addition to ongoing involvement with the entity, it had a key role in establishing that entity or in bringing together relevant counterparties for the transaction facil itated by the entity. During 2020 , the Group sponsored the creation of various SEs and interacted with a number of non-sponsored SEs, including securitization vehicles, client vehicles and certain investment funds, that UBS did not consolidate as of 31 December 2020 because it did not control these entities. The table below presents the Group’s interests in and maximum exposure to loss from unconsolidated SEs as well as the total assets held by the SEs in which UBS had an interest as of year-end , except for investment funds sponsored by third parties, for which the carrying amount of UBS’s interest as of year-end has been disclosed. Interests in unconsolidated structured entities 31.12.20 USD million, except where indicated Securitization vehicles Client vehicles Investment funds Total Maximum exposure to loss 1 Financial assets at fair value held for trading 375 131 7,595 8,101 8,101 Derivative financial instruments 6 49 158 213 211 Loans and advances to customers 179 179 179 Financial assets at fair value not held for trading 35 1 2 172 208 208 Financial assets measured at fair value through other comprehensive income 6,624 6,624 6,624 Other financial assets measured at amortized cost 0 2 0 250 Total assets 416 3 6,805 8,104 15,326 Derivative financial instruments 3 4 11 376 390 0 Total liabilities 3 11 376 390 Assets held by the unconsolidated structured entities in which UBS had an interest (USD billion) 39 5 136 6 484 7 31.12.19 USD million, except where indicated Securitization vehicles Client vehicles Investment funds Total Maximum exposure to loss 1 Financial assets at fair value held for trading 462 130 5,874 6,466 6,466 Derivative financial instruments 9 9 36 55 53 Loans and advances to customers 174 174 174 Financial assets at fair value not held for trading 81 8 2 157 245 997 Financial assets measured at fair value through other comprehensive income 3,955 3,955 3,955 Other financial assets measured at amortized cost 335 16 2 351 1,372 Total assets 888 3 4,118 6,242 11,247 Derivative financial instruments 2 4 225 324 552 1 Total liabilities 2 225 324 552 Assets held by the unconsolidated structured entities in which UBS had an interest (USD billion) 55 5 73 6 413 7 1 For the purpose of this disclosure, maximum exposure to loss amounts do not consider the risk-reducing effects of collateral or other credit enhancements. 2 Represents the carrying amount of loan commitments. The maximum exposure to loss for these instruments is equal to the notional amount. 3 As of 31 December 2020, USD 0.2 billion of the USD 0.4 billion (31 December 2019: USD 0.6 billion of the USD 0.9 billion) was held in Group Functions – Non-core and Legacy Portfolio. 4 Comprised of credit default swap liabilities and other swap liabilities. The maximum exposure to loss for credit default swap liabilities is equal to the sum of the negative carrying amount and the notional amount. For other swap liabilities, no maximum exposure to loss is reported. 5 Represents the principal amount outstanding. 6 Represents the market value of total assets. 7 Represents the net asset value of the investment funds sponsored by UBS and the carrying amount of UBS’s interests in the investment funds not sponsored by UBS. The Group retains or purchases interests in unconsolidated SEs in the form of direct investments, financing, guarantees, letters of credit, derivatives and through management contracts. The Group’s maximum exposure to loss is generally equal to the carrying amount of the Group’s interest in the SE, with the exception of guarantees, letters of credit and credit derivatives , for which the contract’s notional amount, adjusted for losses already incurred, represents the maximum loss that the Group is exposed to. In addition, the current fair value of derivative swap instruments with a po sitive replacement value only, such as total return swaps, is presented as the maximum exposure to loss. Risk exposure for these swap instruments could change over time with market movements. The maximum exposure to loss disclosed in the table on the previ ous page does not reflect the Group’s risk management activities, including effects from financial instruments that may be used to economically hedge the risks inherent in the unconsolidated SE or the risk-reducing effects of collateral or other credit enh ancements. In 2020 and 2019 , the Group did not provide support, financial or otherwise, to an unconsolidated SE when not contractually obligated to do so, nor does the Group have an y intention to do so in the future. In 2020 and 2019 , income and expenses from interests in unconsolidated SEs primarily resulted from mark-to- market movements recognized in Other net income from financial instruments measured at fair value through profit of loss , which have generally been hedged with other f inancial instruments, as well as fee and commission income received from UBS-sponsored funds. Interests in securitization vehicles As of 31 December 2020 and 31 December 2019 , the Group held interests, both retained and acquired, in various securitiz ation vehicles, half of which are held within Group Functions – Non-core and Legacy Portfolio. The Investment Bank also retained interests in securitization vehicles related to financing, underwriting, secondary market and derivative trading activities. The numbers outlined in the table on the previous page may differ from the securitization positio ns presented in the 31 December 2020 Pillar 3 report under “Pillar 3 disclosures” at HYPERLINK "http://www.ubs.com/investors" ubs.com/investors , for th e following reasons: (i) exclusion of synthetic securitizations transacted with entities that are not SEs and transactions in which the Group did not have an interest because it did not absorb any risk ; (ii) a different measurement basis in certain cases ( e.g., IFRS carrying amount within the previous table compared with net exposure amount at default for Pillar 3 disclosures) ; and (iii) different classification of vehicles viewed as sponsored by the Group versus sponsored by third parties. › Refer to the 31 December 2020 Pillar 3 report under “Pillar 3 disclosures” at ubs.com/investors for more information Interests in client vehicles Client vehicles are established predominantly for clients to invest in specific assets or risk exposures. As of 31 December 2020 and 31 December 2019 , the Group retained interests in client vehicles sponsored by UBS and third parties that relate to financing and derivative activities , and to hedge structured product offerings. Included within these investments are securities guaranteed by US government agencies. Interests in investment funds Investment funds have a collective investment objective, and are managed by an investment manager. The Group holds interests in a number of investment funds, primarily resulting from seed investments or in order to hedge structured product offerings. In addition to the interests disclosed in the table on the previous page, the Group manages the assets of various pooled investment funds and receives fees that are based, in whole or part, on the net asset value of the fund and / or the performance of the fund. The specific fee structure is determined on the basis of various market factors and considers the nature of the fund and the jurisdiction of incorporation , as well as fee schedules negotiated with clients. These fee contracts represent an interest in the fund as they align the Group’s exposure with investors, providing a variable return that is based on the performance of the entity. Depending on the structure of the fund, these fees may be collected directly from the fund assets and / or from the investors. Any amounts due are collected on a regular basis and are generally backed by the assets of the fund. The Group did not have any material exposure to loss from these interests as of 31 December 2020 or as of 31 December 2019 . The total net asset value of the funds sponsored by UBS are included in the table on the previous page . Sponsored unconsolidated structured entities in which UBS did not have an interest For several sponsored SEs, no interest was held by the Group at year-end . However, during the respective repo rting period the Group transferred assets, provided services and held instruments that did not qualify as an interest in these sponsored SEs, and accordingly earned income or incurred expenses from these entities. The table below presents the income earned and expenses incurred directly from these entities during the year , as well as corresponding asset information. The table does not include income earned and expenses incurred from risk management activities, including income and expenses from financial in struments used to economically hedge instruments transacted with the unconsolidated SEs. The majority of the fee income arose from investment funds that are sponsored and administrated by the Group, but managed by third parties. As the Group does not provide any investment management services, UBS was not exposed to risk from the performance o f these entities and was therefore deemed not to have an interest in them. In certain structures, the fees receivable may be collected directly from the investors and have therefore not been included in the table below. The Group also recorded other net i ncome from financial instruments measured at fair value through profit or loss from mark-to-market movements arising primarily from derivatives, such as interest rate and currency swaps , as well as credit derivatives, through which the Group purchases prot ection, and financial liabilities designated at fair value, which do not qualify as interests because the Group does not absorb variability from the performance of the entity. Total income reported does not reflect economic hedges or other mitigating effec ts from the Group’s risk management activities. During 2020 , UBS and third parties did not transfer any assets into sponsored securitization vehicles created in the year ( 2019 : USD 1 billion and USD 1 billion , respectively). UBS and third parties transferred assets , alongside deposits and debt issuances , of USD 0 billion and USD 9 billion , respectively , into sponsored client vehicles created in the year ( 2019 : USD 0 billion and USD 1 billion , respectively). For sponsored investment funds, transfers arose during the period as investors invested and redeemed positions, thereby changing the overall size of the funds, which, when combined with market movements, resulted in a total closing net asset value of USD 3 7 billion (31 December 2019 : USD 42 billion). Sponsored unconsolidated structured entities in which UBS did not have an interest at year-end As of or for the year ended 31.12.20 USD million, except where indicated Securitization vehicles Client vehicles Investment funds Total Net interest income 1 12 2 15 Net fee and commission income 1 58 60 Other net income from financial instruments measured at fair value through profit or loss 0 17 (15) 2 Total income 1 30 45 76 Asset information (USD billion) 0 1 9 2 37 3 As of or for the year ended 31.12.19 USD million, except where indicated Securitization vehicles Client vehicles Investment funds Total Net interest income (1) 0 (1) (2) Net fee and commission income 13 50 63 Other net income from financial instruments measured at fair value through profit or loss 19 (18) 9 11 Total income 19 (5) 58 72 Asset information (USD billion) 2 1 1 2 42 3 1 Represents the amount of assets transferred to the respective securitization vehicles. 2 Represents the amount of assets transferred to the respective client vehicles. 3 Represents the total net asset value of the respective investment funds.
UBS AG
Interests In Unconsolidated Structured Entities [Line Items]
Disclosure Of Unconsolidated Structured Entities Explanatory	c) Interests in unconsolidated structured entities UBS AG is considered to sponsor another entity if, in addition to ongoing involvement with the entity, it had a key role in establishing that entity or in bringing together releva nt counterparties for the transaction facilitated by the entity. During 2020 , UBS AG sponsored the creation of various SEs and interacted with a number of non-sponsored SEs, including securitization vehicles, client vehicles and certain investment funds , that UBS AG did not consolidate as of 31 December 2020 because it did not control these entities. The table below presents UBS AG ’s interests in and maximum exposure to loss from unconsolidated SEs as well as the total assets held by the SEs in which UBS AG had an interest as of year-end , except for investment funds sponsored by third parties, for which the carrying amount of UBS AG ’s interest as of year-end has been disclosed. Interests in unconsolidated structured entities 31.12.20 USD million, except where indicated Securitization vehicles Client vehicles Investment funds Total Maximum exposure to loss 1 Financial assets at fair value held for trading 375 131 7,595 8,101 8,101 Derivative financial instruments 6 49 158 213 211 Loans and advances to customers 179 179 179 Financial assets at fair value not held for trading 35 1 2 73 109 109 Financial assets measured at fair value through other comprehensive income 6,624 6,624 6,624 Other financial assets measured at amortized cost 0 2 0 250 Total assets 416 3 6,805 8,005 15,227 Derivative financial instruments 3 4 11 376 390 0 Total liabilities 3 11 376 390 Assets held by the unconsolidated structured entities in which UBS had an interest (USD billion) 39 5 136 6 484 7 31.12.19 USD million, except where indicated Securitization vehicles Client vehicles Investment funds Total Maximum exposure to loss 1 Financial assets at fair value held for trading 462 130 5,874 6,466 6,466 Derivative financial instruments 9 9 36 55 53 Loans and advances to customers 174 174 174 Financial assets at fair value not held for trading 81 8 2 62 151 902 Financial assets measured at fair value through other comprehensive income 3,955 3,955 3,955 Other financial assets measured at amortized cost 335 16 2 351 1,372 Total assets 888 3 4,118 6,147 11,152 Derivative financial instruments 2 4 225 324 552 1 Total liabilities 2 225 324 552 Assets held by the unconsolidated structured entities in which UBS had an interest (USD billion) 55 5 73 6 413 7 1 For the purpose of this disclosure, maximum exposure to loss amounts do not consider the risk-reducing effects of collateral or other credit enhancements. 2 Represents the carrying amount of loan commitments. The maximum exposure to loss for these instruments is equal to the notional amount. 3 As of 31 December 2020, USD 0.2 billion of the USD 0.4 billion (31 December 2019: USD 0.6 billion of the USD 0.9 billion) was held in Group Functions – Non-core and Legacy Portfolio. 4 Comprised of credit default swap liabilities and other swap liabilities. The maximum exposure to loss for credit default swap liabilities is equal to the sum of the negative carrying amount and the notional amount. For other swap liabilities, no maximum exposure to loss is reported. 5 Represents the principal amount outstanding. 6 Represents the market value of total assets. 7 Represents the net asset value of the investment funds sponsored by UBS and the carrying amount of UBS’s interests in the investment funds not sponsored by UBS. UBS AG retains or purchases interests in unconsolidated SEs in the form of direct investments, financing, guarantees, letters of credit, derivatives and through management contracts. UBS AG ’s maximum exposure to loss is generally equal to the carrying amount of UBS AG ’s interest in the SE, with the exception of guarantees, letters of credit and credit derivatives , for which the contract’s notional amount, adjusted for losses already incurred, represents the maximum loss that UBS AG is exposed to. In addition, the current fair value of derivative swap instruments with a positive replacement value only, such as total return swaps, is presented as the maximum exposure to loss. Risk exposure for these swap instruments could change over time with market movements. The maximum exposure to loss disclosed in the table on the previous page does not reflect UBS AG ’s risk management activities, including effects from financial instruments that may be used to economically hedge the risks inherent in the unconsolidated SE or th e risk-reducing effects of collateral or other credit enhancements. In 2020 and 2019 , UBS AG did not provide support, financial or otherwise, to an unconsolidated SE when not contractually obligated to do so, nor does UBS AG have an y intention to do so in the future. In 2020 and 2019 , income and expenses from interests in unconsolidated SEs primarily resulted from mark-to- market movements recognized in Other net income from financial instruments measured at fair value through profit of loss , which have generally been hedged with other financial instruments, as well as fee and commission income received from UBS-sponsored funds. Interests in securitization vehicles As of 31 December 2020 and 31 December 2019 , UBS AG held interests, both r etained and acquired, in various securitization vehicles, half of which are held within Group Functions – Non-core and Legacy Portfolio. The Investment Bank also retained interests in securitization vehicles related to financing, underwriting, secondary market and derivative trading activities. The numbers outlined in the table on the previous page may differ from the securitization positio ns presented in the 31 December 2020 Pillar 3 report under “Pillar 3 disclosures” at HYPERLINK "http://www.ubs.com/investors" ubs.com/investors , for the following reasons: (i) exclusion of synthetic securitizations transacted with entities that are not SEs and transactions in which UBS AG did not have an interest because it did not absorb any risk ; (ii) a differe nt measurement basis in certain cases (e.g., IFRS carrying amount within the previous table compared with net exposure amount at default for Pillar 3 disclosures) ; and (iii) different classification of vehicles viewed as sponsored by UBS AG versus sponsore d by third parties. › Refer to the 31 December 2020 Pillar 3 report under “Pillar 3 disclosures” at ubs.com/investors for more information Interests in client vehicles Client vehicles are established predominantly for clients to invest in specific assets or risk exposures. As of 31 December 2020 and 31 December 2019 , UBS AG retained interests in client vehicles sponsored by UBS and third parties that relate to financing and derivative activities , and to hedge structured product offerings. Included within these investments are securities guaranteed by US government agencies. Interests in investment funds Investment funds have a collective investment objective, and are managed by an investment manager. UBS AG holds interests in a number of investment funds, primarily resulting from seed investments or in order to hedge structured product offerings. In addition to the interests disclosed in the table on the previous page, UBS AG manages the assets of various pooled investment funds and receives fees that are based, in whole or part, on the net asset value of the fund and / or the performance of the fund. The specific fee structure is determined on the basis of various market factors and considers the nature of the fund and the jurisdiction of incorporation , as well as fee schedules negotiated with clients. These fee contracts represent an interest in the fund as they align UBS AG ’s exposure with investors, providing a variable return that is based on the performance of the entity. Depending on the structure of the fund, these fees may be collected directly from the fund assets and / or from the investors. Any amounts due are collected on a regular basis and are generally backed by the assets of the fund. UBS AG did not have any material exposure to loss from these interests as of 31 December 2020 or as of 31 December 2019 . The total net asset value of the funds sponsored by UBS are included in the table on the previous page . Sponsored unconsolidated structured entities in which UBS did not have an interest For several sponsored SEs, no interest was held by UBS AG at year-end . Howe ver, during the respective reporting period UBS AG transferred assets, provided services and held instruments that did not qualify as an interest in these sponsored SEs, and accordingly earned income or incurred expenses from these entities. The table belo w presents the income earned and expenses incurred directly from these entities during the year , as well as corresponding asset information. The table does not include income earned and expenses incurred from risk management activities, including income an d expenses from financial instruments used to economically hedge instruments transacted with the unconsolidated SEs. The majority of the fee income arose from investment funds that are sponsored and administrated by UBS AG , but managed by third parties. As UBS AG does not provide any investment management services, UBS AG was not exposed to risk from the performance of t hese entities and was therefore deemed not to have an interest in them. In certain structures, the fees receivable may be collected directly from the investors and have therefore not been included in the table below. UBS AG also recorded other net income from financial instruments measured at fair value through profit or loss from mark-to-market movements arising primarily from derivatives, such as interest rate and currency swaps , as well as credit derivatives, through which UBS AG purchases protection, a nd financial liabilities designated at fair value, which do not qualify as interests because UBS AG does not absorb variability from the performance of the entity. Total income reported does not reflect economic hedges or other mitigating effects from UBS AG ’s risk management activities. During 2020 , UBS AG and third parties did not transfer any assets into sponsored securitization ve hicles created in the year ( 2019 : USD 1 billion and USD 1 billion , respectively). UBS AG and third parties transferred assets , alongside deposits and debt issuances, of USD 0 billion and USD 9 billion , respectively , into sponsored client vehicles created in the year ( 2019 : USD 0 billion and USD 1 billion , respectively). For sponsored inves tment funds, transfers arose during the period as investors invested and redeemed positions, thereby changing the overall size of the funds, which, when combined with market movements, resulted in a total closing net asset value of USD 37 billion (31 Decem ber 2019 : USD 42 billion). Sponsored unconsolidated structured entities in which UBS did not have an interest at year-end As of or for the year ended 31.12.20 USD million, except where indicated Securitization vehicles Client vehicles Investment funds Total Net interest income 1 12 2 15 Net fee and commission income 1 58 60 Other net income from financial instruments measured at fair value through profit or loss 0 17 (15) 2 Total income 1 30 45 76 Asset information (USD billion) 0 1 9 2 37 3 As of or for the year ended 31.12.19 USD million, except where indicated Securitization vehicles Client vehicles Investment funds Total Net interest income (1) 0 (1) (2) Net fee and commission income 13 50 63 Other net income from financial instruments measured at fair value through profit or loss 19 (18) 9 11 Total income 19 (5) 58 72 Asset information (USD billion) 2 1 1 2 42 3 1 Represents the amount of assets transferred to the respective securitization vehicles. 2 Represents the amount of assets transferred to the respective client vehicles. 3 Represents the total net asset value of the respective investment funds.

Changes in organization and acq

Changes in organization and acquisitions and disposals of subsidiaries and businesses	12 Months Ended
	Dec. 31, 2020
Changes In Organisation And Disposals [Line Items]
Disclosure of changes in organisation and disposals [text block]	Note 29 Changes in organization and acquisitions and disposals of subsidiaries and businesses D isposals of subsidiaries and businesses Sale of a majority stake in Fondcenter AG In the third quarter of 2020, UBS completed the sale of a 51.2% stake in Fondcenter AG to Clearstream , Deutsche Börse Group’s post-trade services provider, and deconsolidated the entity in accordance with IFRS 10, Consolidated Financial Statements . The sale resulted in a post-tax gain of USD 631 million, which wa s recognized in Other income . Fondcenter AG has been combined with Clearstream’s Fund Desk business to form Clearstream Fund Centre. UBS retains a 48.8% shareholding in the entity and accounts for this minority interest as an investment in an associate wit h a carrying amount of USD 399 million as of 31 December 2020. Banking partnership with Banco do Brasil In the third quarter of 2020, UBS completed the transaction with Banco do Brasil , establishing a strategic investment banking partnership in Brazil and selected countries in South America. The partnership was established by UBS issuing a 49.99% stake in UBS Brasil Serviços in exchange for exclusive access to Banco do Brasil’s corporate clients. This resulted in UBS recognizing an intangible ass et of USD 147 million. UBS retains a controlling interest of 50.01% in UBS Brasil Serviços and continues to consolidate the entity. Upon completion, UBS Group’s equity attributable to non-controlling interests increased by USD 115 million, with no material effect on UBS Group’s equity attributable to shareholders. Strategic partnership with Sumitomo Mitsui Trust Holdings In 2019, UBS entered into a strategic wealth management partnership in Japan with Sumitomo Mitsui Trust Holdings, Inc. ( SuMi Trust Holdin gs). In January 2020, the first phase was launched, with operations commencing in the newly established joint venture, UBS SuMi TRUST Wealth Advisory, which is owned equally by UBS Securities Japan and SuMi Trust Holdings and is accounted for as an investm ent in a joint venture by UBS. UBS and SuMi Trust Holdings have also started offering each other’s products and services to their respective current clients. The second phase of the partnership is expected to launch in the second half of 2021 with the est ablishment of a new entity which will be 51% owned and controlled by UBS, requiring UBS to consolidate this entity. UBS does not expect a material effect on shareholders’ equity of the Group upon closing. Sale of wealth management business in Austria in 20 21 In December 2020, UBS signed an agreement to sell its domestic wealth management business in Austria to LGT. The agreement includes the transition of employees, client relationships, products and services of the wealth management business of UBS Austria . The transaction is subject to customary closing conditions and is expected to close in the third quarter of 2021. UBS expects to record a pre-tax gain of approximately USD 0.1 billion upon closing of the transaction.
UBS AG
Changes In Organisation And Disposals [Line Items]
Disclosure of changes in organisation and disposals [text block]	Note 29 Changes in organization and acquisitions and disposals of subsidiaries and businesses D isposals of subsidiaries and businesses Sale of a majority stake in Fondcenter AG In the third quarter of 2020, UBS AG completed the sale of a 51.2% stake in Fondcenter AG to Clearstream , Deutsche Börse Group’s post-trade services provider, and deconsolidated the entity in accordance with IFRS 10, Consolidated Financial Statements . The sale resulted in a post-tax gain of USD 631 million, which was recognized in Other income . Fondcenter AG has been combined with Clearstream’s Fund Desk business to form Clearstream Fund Centre. UBS AG retains a 48.8% shareholding in the entity and accounts for this minority interest as an investment in an associate with a carrying amount of USD 399 million as of 31 December 2020. Banking partnership with Banco do Brasil In the third quarter of 2020, UBS AG completed the transaction with Banco do Br asil , establishing a strategic investment banking partnership in Brazil and selected countries in South America. The partnership was established by UBS AG issuing a 49.99% stake in UBS Brasil Serviços in exchange for exclusive access to Banco do Brasil’s c orporate clients. This resulted in UBS AG recognizing an intangible asset of USD 147 million. UBS AG retains a controlling interest of 50.01% in UBS Brasil Serviços and continues to consolidate the entity. Upon completion, UBS AG’s equity attributable to n on-controlling interests increased by USD 115 million, with no material effect on UBS AG’s equity attributable to shareholders. Strategic partnership with Sumitomo Mitsui Trust Holdings In 2019, UBS AG entered into a strategic wealth management partnershi p in Japan with Sumitomo Mitsui Trust Holdings, Inc. ( SuMi Trust Holdings). In January 2020, the first phase was launched, with operations commencing in the newly established joint venture, UBS SuMi TRUST Wealth Advisory, which is owned equally by UBS Secu rities Japan and SuMi Trust Holdings and is accounted for as an investment in a joint venture by UBS AG . UBS AG and SuMi Trust Holdings have also started offering each other’s products and services to their respective current clients. The second phase of the partnership is expected to launch in the second half of 2021 with the establishment of a new entity which will be 51% owned and controlled by UBS AG , requiring UBS AG to consolidate this entity. UBS AG does not expect a material effect on shareholders’ equity upon closing. Sale of wealth management business in Austria in 2021 In December 2020, UBS AG signed an agreement to sell its domestic wealth management business in Austria to LGT. The agreement includes the transition of employees, client relations hips, products and services of the wealth management business of UBS Austria. The transaction is subject to customary closing conditions and is expected to close in the third quarter of 2021. UBS AG expects to record a pre-tax gain of approximately USD 0.1 billion upon closing of the transaction.

Finance lease receivables

Finance lease receivables	12 Months Ended
Finance lease receivables	Dec. 31, 2020
Disclosure Of Operating Leases And Finance Leases [Line Items]
Disclosure Of Leases Explanatory	Note 30 Finance lease receivables UBS acts as a lessor and leases a variety of assets to third parties under finance leases, such as industrial equipment and aircraft. At the end of the respective lease term, assets may be sold to third parties or further leased. Lessees may participate in any sales proceeds achieved. Lease payments cover the cost of the assets (net of their residual value), as well as financing costs. As of 31 December 2020, unguaranteed residual values of USD 1 85 million (31 December 2019: USD 246 million) had been accrue d . The ECL stage 3 allowance for uncollectible minimum lease payments receivable was USD 7 million (31 December 2019: USD 6 million). No contingent rents were received in 2020. Amounts in the table below are disclosed on a gross basis. The finance lease recei vables in Note 14a of USD 1,44 7 million are presented net of expected credit loss allowances. Lease receivables USD million 31.12.20 Total minimum lease payments Unearned finance income Present value 2021 450 25 426 2022–2025 856 31 825 Thereafter 215 4 210 Total 1,521 60 1,461 USD million 31.12.19 Total minimum lease payments Unearned finance income Present value 2020 448 31 417 2021–2024 874 52 822 Thereafter 221 6 215 Total 1,544 89 1,455
UBS AG
Disclosure Of Operating Leases And Finance Leases [Line Items]
Disclosure Of Leases Explanatory	Note 30 Finance lease receivables UBS AG acts as a lessor and leases a variety of assets to third parties under finance leases, such as industrial equipment and aircraft. At the end of the respective lease term, assets may be sold to third parties or further leased. Lessees may participate in an y sales proceeds achieved. Lease payments cover the cost of the assets (net of their residual value), as well as financing costs. As of 31 December 2020, unguaranteed residual values of USD 1 85 million (31 December 2019: USD 246 million) had been accrued . The E CL stage 3 allowance for uncollectible minimum lease payments receivable was USD 7 million (31 December 2019: USD 6 million). No contingent rents were received in 2020. Amounts in the table below are disclosed on a gross basis. The finance lease receivab les in Note 14a of USD 1,44 7 million are presented net of expected credit loss allowances. Lease receivables USD million 31.12.20 Total minimum lease payments Unearned finance income Present value 2021 450 25 426 2022–2025 856 31 825 Thereafter 215 4 210 Total 1,521 60 1,461 USD million 31.12.19 Total minimum lease payments Unearned finance income Present value 2020 448 31 417 2021–2024 874 52 822 Thereafter 221 6 215 Total 1,544 89 1,455

Related parties

Related parties	12 Months Ended
Related parties	Dec. 31, 2020
Disclosure Related Parties [Line Items]
Disclosure Of Related Party Explanatory	Note 31 Related parties UBS defines related parties as associates (entities that are significantly influenced by UBS), joint ventures (entities in which UBS shares control with another party), post-employment benefit plans for UBS employees, key management personnel, close family members of key management personnel and entities that are, directly or indirectly, controlled or jointly controlled by key management personnel or their close family members. Key management personnel is defined as members of the Board of Directors (BoD) and Group Executive Board (GEB). a) Remuneration of key managemen t personnel The Chairman of the BoD has a specific management employment contract and receives pension benefits upon retirement. Total remuneration of the Chairman of the BoD and all GEB members is included in the table below . Remuneration of key management personnel USD million, except where indicated 31.12.20 31.12.19 31.12.18 Base salaries and other cash payments 1 33 32 27 Incentive awards – cash 2 18 14 15 Annual incentive award under DCCP 27 21 22 Employer’s contributions to retirement benefit plans 3 3 3 Benefits in kind, fringe benefits (at market value) 1 1 2 Equity-based compensation 3 47 37 40 Total 129 108 109 Total (CHF million) 4 121 107 107 1 May include role-based allowances in line with market practice and regulatory requirements. 2 The cash portion may also include blocked shares in line with regulatory requirements. 3 Compensation expense is based on the share price on grant date taking into account performance conditions. Refer to Note 27 for more information. For GEB members, equity-based compensation for 2020 and 2019 was entirely composed of LTIP awards and equity-based compensation for 2018 was entirely composed of EOP awards. For the Chairman of the BoD the equity-based compensation for 2020, 2019 and 2018 was entirely composed of UBS shares. 4 Swiss franc amounts disclosed represent the respective US dollar amounts translated at the applicable performance award currency exchange rates (2020: USD / CHF 0.94; 2019: USD / CHF 0.99; 2018: USD / CHF 0.98). The independent members of the BoD do not have employment or service cont racts with UBS, and thus are not entitled to benefits upon termination of their service on the BoD. Payments to these individuals for their services as external board members amounted to USD 7.0 million (CHF 6.6 million) i n 2020, USD 7.3 million (CHF 7. 3 m illion) in 201 9 and USD 7. 6 million (CHF 7. 4 million) in 201 8 . b) Equity holdings of key management personnel Equity holdings of key management personnel 1 31.12.20 31.12.19 Number of shares held by members of the BoD, GEB and parties closely linked to them 2 5,288,317 6,887,826 1 No options were held in 2020 and 2019 by non-independent menbers of the BoD and any GEB member or any of its related parties. 2 Excludes shares granted under variable compensation plans with forfeiture provisions. Of the share totals above, no shares were held by close family members of key management personnel on 31 December 20 20 and 31 December 201 9 . No shares were held by entities that are directly or indirectly controlled or jointly controlled by key management personnel or their close family members on 31 December 2020 and 31 December 2019. As of 31 December 2020, no member of the BoD or GEB was the beneficial owner of more than 1% of UBS Group AG’s shares. c) Loans, advances and mortgages to key m anagement personnel The non-independent member s of the BoD and GEB members are granted loans, fixed advances and mortgages in the ordinary course of business on substantially the same terms and conditions that are available to oth er employees, including interest rates and collateral, and neither involve more than the normal risk of collect a bility nor contain any other unfavorable features for the firm. Independent BoD members are granted loans and mortgages in the ordinary course o f business at general market conditions. Movements in the loan, advances and mortgage balances are as follows. Loans, advances and mortgages to key management personnel 1 USD million, except where indicated 2020 2019 Balance at the beginning of the year 33 34 Additions 14 9 Reductions (8) (11) Balance at the end of the year 2 38 33 Balance at the end of the year (CHF million) 2, 3 34 32 1 All loans are secured loans. 2 There were no unused uncommitted credit facilities as of 31 December 2020 and 31 December 2019. 3 Swiss franc amounts disclosed represent the respective US dollar amounts translated at the relevant year-end closing exchange rate. d) Other related-party transactions with entities controlled by key management personnel In 2020 and 2019, UBS did not enter into transactions with entities that are directly or indirectly controlled or jointly controlled by UBS’s key management personnel or their close family members and as of 31 December 2020, 31 December 2019 and 31 Decembe r 2018, there were no outstanding balances related to such transactions. Furthermore, in 2020 and 2019, entities controlled by key management personnel did not sell any goods or provide any services to UBS, and therefore did not receive any fees from UBS. UBS also did not provide services to such entities in 2020 and 2019, and therefore also received no fees. e) Transactions with associates and joint ventures Loans to and outstanding receivables from associates and joint ventures USD million 2020 2019 Carrying amount at the beginning of the year 982 829 Additions 527 145 Reductions (1,001) (5) Foreign currency translation 123 13 Carrying amount at the end of the year 630 982 of which: unsecured loans and receivables 621 971 Other transactions with associates and joint ventures As of or for the year ended USD million 31.12.20 31.12.19 Payments to associates and joint ventures for goods and services received 139 124 Fees received for services provided to associates and joint ventures 128 1 Liabilities to associates and joint ventures 91 101 Commitments and contingent liabilities to associates and joint ventures 9 1,598 Refer to Note 28 for an overview of investments in associates a nd joint ventures
UBS AG
Disclosure Related Parties [Line Items]
Disclosure Of Related Party Explanatory	Note 31 Related parties UBS AG defines related parties as associates (entities that are significantly influenced by UBS), joint ventures (entities in which UBS shares control with another party), post-employment benefit plans for UBS AG employees, key management personnel, close family members of key management personnel and entities tha t are, directly or indirectly, controlled or jointly controlled by key management personnel or their close family members. Key management personnel is defined as members of the Board of Directors (BoD) and Executive Board (EB). a) Remuneration of key management personnel The Chairman of the BoD has a specific management employment contract and receives pension benefits upon retirement. Total remuneration of the Chairman of the BoD and all EB members is included in the table below . Remuneration of key management personnel USD million, except where indicated 31.12.20 31.12.19 31.12.18 Base salaries and other cash payments 1 31 30 25 Incentive awards – cash 2 17 13 14 Annual incentive award under DCCP 26 20 21 Employer’s contributions to retirement benefit plans 2 2 3 Benefits in kind, fringe benefits (at market value) 1 1 2 Equity-based compensation 3 45 34 38 Total 122 101 102 Total (CHF million) 4 115 101 100 1 May include role-based allowances in line with market practice and regulatory requirements. 2 The cash portion may also include blocked shares in line with regulatory requirements. 3 Compensation expense is based on the share price on grant date taking into account performance conditions. Refer to Note 27 for more information. For EB members, equity-based compensation for 2020 and 2019 was entirely composed of LTIP awards and equity-based compensation for 2018 was entirely composed of EOP awards. For the Chairman of the BoD, the equity-based compensation for 2020, 2019 and 2018 was entirely composed of UBS shares. 4 Swiss franc amounts disclosed represent the respective US dollar amounts translated at the applicable performance award currency exchange rates (2020: USD / CHF 0.94; 2019: USD / CHF 0.99; 2018: USD / CHF 0.98) The independent members of the BoD do not have em ployment or service contracts with UBS AG , and thus are not entitled to benefits upon termination of their service on the BoD. Payments to these individuals for their services as external board members amoun ted to USD 7. 0 m illion (CHF 6.6 million) in 2020 , USD 7. 3 million (CHF 7. 3 million) in 201 9 and USD 7. 6 million (CHF 7. 4 million) in 201 8 . b) Equity holdings of key management personnel Equity holdings of key management personnel 1 31.12.20 31.12.19 Number of shares held by members of the BoD, EB and parties closely linked to them 2 4,956,640 6,609,848 1 No options were held in 2020 and 2019 by non-independent menbers of the BoD and any GEB member or any of its related parties. 2 Excludes shares granted under variable compensation plans with forfeiture provisions. Of the share totals above, no shares were held by close family members of key management personnel on 31 Dece mber 2020 and 31 December 2019 . No shares were held by entities that are directly or indirectly controlled or jointly controlled by key management personnel or their close family members on 31 December 2020 and 31 December 201 9 . As of 31 December 2020 , no member of the BoD or EB was the beneficial owner of more than 1% of UBS Group AG’s shares. c) Loans, advances and mortgages to key management personnel The non-independent member s of the BoD and EB members are granted loans, fixed advances and mortgages in the ordinary course of business on substantially the same terms and conditions that are available to other employee s, including interest rates and collateral, and neither involve more than the normal risk of collecta bility nor contain any other unfavorable features for the firm. Independent BoD members are granted loans and mortgages in the ordinary course of business at general market conditions. Movements in the loan, advances and mortgage balances are as follows. Loans, advances and mortgages to key management personnel 1 USD million, except where indicated 2020 2019 Balance at the beginning of the year 23 28 Additions 13 6 Reductions (5) (11) Balance at the end of the year 2 31 23 Balance at the end of the year (CHF million) 2, 3 28 22 1 All loans are secured loans. 2 There were no unused uncommitted credit facilities as of 31 December 2020 and 31 December 2019. 3 Swiss franc amounts disclosed represent the respective US dollar amounts translated at the relevant year-end closing exchange rate. d) Other related-party transactions with entities controlled by key management personnel In 2020 and 2019 , UBS AG did not enter into transactions with entities that are directly or indirectly controlled or jointly controlled by UBS AG ’s key mana gement personnel or their close family members and as of 31 December 2020 , 31 December 201 9 and 31 December 201 8 , th ere were no outstanding balances related to such t ransactions. Furthermor e, in 2020 and 201 9 , entities controlled by key management personnel did not sell any goods or provide any services to UBS AG , and therefore did not receive any fees from UBS AG . UBS AG also did not provide services to such entities in 2020 and 2019, and t herefore also received no fees. e) Transactions with associates and joint ventures Loans to and outstanding receivables from associates and joint ventures USD million 2020 2019 Carrying amount at the beginning of the year 982 829 Additions 527 145 Reductions (1,001) (5) Foreign currency translation 123 13 Carrying amount at the end of the year 630 982 of which: unsecured loans and receivables 621 971 Other transactions with associates and joint ventures As of or for the year ended USD million 31.12.20 31.12.19 Payments to associates and joint ventures for goods and services received 139 124 Fees received for services provided to associates and joint ventures 128 1 Liabilities to associates and joint ventures 91 101 Commitments and contingent liabilities to associates and joint ventures 9 1,598 Refer to Note 28 for an overview of investments in ass ociates and joint ventures f) Receivables and payables from / to UBS Group AG and other subsidiaries of UBS Group AG USD million 31.12.20 31.12.19 Receivables Loans and advances to customers 1,470 1,255 Financial assets at fair value held for trading 76 180 Other financial assets measured at amortized cost 38 60 Payables Customer deposits 3,324 2,314 Funding from UBS Group AG and its subsidiaries 53,979 47,866 Other financial liabilities measured at amortized cost 1,820 1,829 Other financial liabilities designated at fair value 1 1,375 217 1 Represents funding recognized from UBS Group AG and its subsidiaries that is designated at fair value. Refer to Note 19b for more information.

Invested assets and net new mon

Invested assets and net new money	12 Months Ended
Invested assets and net new money	Dec. 31, 2020
Disclosure Invested Assets And Net New Money [Line Items]
Disclosure Of InvestedAssets And Net New Money Explanatory	Note 32 Invested assets and net new money Invested assets Invested assets consist of all client assets managed by or deposited with UBS for investment purposes. Invested assets include managed fund assets, managed institutional assets, discretionary and advisory wealth management portfolios, fiduciary deposits, time deposits, savings acco unts and wealth management securities or brokerage accounts. All assets held for purely transactional purposes and custody-only assets, including corporate client assets held for cash management and transactional purposes, are excluded from invested assets as the Group only administers the assets and does not offer advice on how the assets should be invested. Also excluded are non-bankable assets (e.g., art collections) and deposits from third-party banks for funding or trading purposes. Discretionary asset s are defined as client assets that UBS decides how to invest. Other invested assets are those where the client ultimately decides how the assets are invested. When a single product is created in one business division and sold in another, it is counted in both the business division that manages the investment and the one that distributes it. This results in double counting within UBS total invested assets, as both business divisions are independently providing a service to their respective clients, and both add value and generate revenue. Net new money Net new money in a reporting period is the amount of invested assets that are entrusted to UBS by new and existing clients, less those withdrawn by existing clients and clients who terminated their relationsh ip with UBS. Net new money is calculated using the direct method, under which inflows and outflows to / from invested assets are determined at the client level based on transactions. Interest and dividend income from invested assets are not counted as net new money inflows. Market and currency movements as well as fees, commissions and interest on loans charged are excluded from net new money, as are the effects resulting from any acquisition or divestment of a UBS subsidiary or business. Reclassifications between invested assets and custody-only assets as a result of a change in the service level delivered are generally treated as net new money flows . H owever, where the change in service level directly results from a n externally imposed regulation or from a strategic decision by UBS to exit a market or specific service offering , the one-time net effect is reported as Other effects . The Investment Bank does not track invested assets and net new money. However, when a client is transferred from the Investment Bank to another business division, this may produce net new money even though client assets were already with UBS. Invested assets and net new money As of or for the year ended USD billion 31.12.20 31.12.19 Fund assets managed by UBS 397 358 Discretionary assets 1,459 1,209 Other invested assets 2,331 2,040 Total invested assets 1 4,187 3,607 of which: double counts 311 248 Net new money 1 127 51 1 Includes double counts. Development of invested assets USD billion 2020 2019 Total invested assets at the beginning of the year 1 3,607 3,101 Net new money 127 51 Market movements 2 359 444 Foreign currency translation 96 6 Other effects (1) 5 of which: acquisitions / (divestments) 0 (1) Total invested assets at the end of the year 1 4,187 3,607 1 Includes double counts. 2 Includes interest and dividend income.
UBS AG
Disclosure Invested Assets And Net New Money [Line Items]
Disclosure Of InvestedAssets And Net New Money Explanatory	Note 32 Invested assets and net new money Invested assets Invested assets consist of all client assets managed by or deposited with UBS AG for investment purposes. Invested assets include managed fund assets, managed institutional assets, discretionary and advisory wealth management portfolios, fiduciary deposits, time deposits, savings a ccounts and wealth management securities or brokerage accounts. All assets held for purely transactional purposes and custody-only assets, including corporate client assets held for cash management and transactional purposes, are excluded from invested ass ets as UBS AG only administers the assets and does not offer advice on how the assets should be invested. Also excluded are non-bankable assets (e.g., art collections) and deposits from third-party banks for funding or trading purposes. Discretionary asset s are defined as client assets that UBS AG decides how to invest. Other invested assets are those where the client ultimately decides how the assets are invested. When a single product is created in one business division and sold in another, it is counted in both the business division that manages the investment and the one that distributes it. This results in double counting within UBS AG total invested assets, as both business divisions are independently providing a service to their respective clients, an d both add value and generate revenue. Net new money Net new money in a reporting period is the amount of invested assets that are entrusted to UBS AG by new and existing clients, less those withdrawn by existing clients and clients who terminated their r elationship with UBS AG. Net new money is calculated using the direct method, under which inflows and outflows to / from invested assets are determined at the client level based on transactions. Interest and dividend income from invested assets are not cou nted as net new money inflows. Market and currency movements as well as fees, commissions and interest on loans charged are excluded from net new money, as are the effects resulting from any acquisition or divestment of a UBS AG subsidiary or business. Rec lassifications between invested assets and custody-only assets as a result of a change in the service level delivered are generally treated as net new money flows . H owever, where the change in service level directly results from a n externally imposed regul ation or from a strategic decision by UBS AG to exit a market or specific service offering , the one-time net effect is reported as Other effects . The Investment Bank does not track invested assets and net new money. However, when a client is transferred from the Investment Bank to another business division, this may produce net new money even though client assets were already with UBS AG Invested assets and net new money As of or for the year ended USD billion 31.12.20 31.12.19 Fund assets managed by UBS 397 358 Discretionary assets 1,459 1,209 Other invested assets 2,331 2,040 Total invested assets 1 4,187 3,607 of which: double counts 311 248 Net new money 1 127 51 1 Includes double counts. Development of invested assets USD billion 2020 2019 Total invested assets at the beginning of the year 1 3,607 3,101 Net new money 127 51 Market movements 2 359 444 Foreign currency translation 96 6 Other effects (1) 5 of which: acquisitions / (divestments) 0 (1) Total invested assets at the end of the year 1 4,187 3,607 1 Includes double counts. 2 Includes interest and dividend income.

Currency translation rates

Currency translation rates	12 Months Ended
Currency translation rates	Dec. 31, 2020
Foreign Exchange Rates [Line Items]
Disclosure Of Effect Of Changes In Foreign Exchange Rates Explanatory	Note 33 Currency translation rates The following table shows the rates of the main currencies used to translate the financial information of UBS’s operations with a functional currency other than the US dollar into US dollars . Closing exchange rate Average rate 1 As of For the year ended 31.12.20 31.12.19 31.12.20 31.12.19 31.12.18 1 CHF 1.13 1.03 1.07 1.01 1.02 1 EUR 1.22 1.12 1.15 1.12 1.18 1 GBP 1.37 1.32 1.29 1.28 1.33 100 JPY 0.97 0.92 0.94 0.92 0.91 1 Monthly income statement items of operations with a functional currency other than the US dollar are translated with month-end rates into US dollars. Disclosed average rates for a year represent an average of 12 month-end rates, weighted according to the income and expense volumes of all operations of the Group with the same functional currency for each month. Weighted average rates for individual business divisions may deviate from the weighted average rates for the Group.
UBS AG
Foreign Exchange Rates [Line Items]
Disclosure Of Effect Of Changes In Foreign Exchange Rates Explanatory	Note 33 Currency translation rates The following table shows the rates of the main currencies used to translate the financial information of UBS AG ’s operations with a functional currency other than the US dollar into US dollars. Closing exchange rate Average rate 1 As of For the year ended 31.12.20 31.12.19 31.12.20 31.12.19 31.12.18 1 CHF 1.13 1.03 1.07 1.01 1.02 1 EUR 1.22 1.12 1.15 1.12 1.18 1 GBP 1.37 1.32 1.29 1.28 1.33 100 JPY 0.97 0.92 0.94 0.92 0.91 1 Monthly income statement items of operations with a functional currency other than the US dollar are translated with month-end rates into US dollars. Disclosed average rates for a year represent an average of 12 month-end rates, weighted according to the income and expense volumes of all operations of UBS AG with the same functional currency for each month. Weighted average rates for individual business divisions may deviate from the weighted average rates for UBS AG.

Events after the reporting peri

Events after the reporting period	12 Months Ended
Events after the reporting period	Dec. 31, 2020
Events After The Reporting Period [Line Items]
Disclosure of events after reporting period [text block]	Note 34 Events after the reporting period Events subsequent to the publication of the unaudited fourth quarter 20 20 report The 2020 results and the balance sheet as of 31 December 2020 differ from those presented in the unaudited fourth quarter 2020 report published on 26 January 2021 as a result of events adjusted for after the balance sheet date. Provisions for litigation, regulatory and si milar matters increased, which reduced 2020 operating profit before tax and 2020 net profit attributable to shareholders each by USD 72 million. As a result, basic earnings per share decreased by USD 0.02 and diluted earnings per share decreased by USD 0. 02. › Refer to Note 18 for more information about provisions for litigation, regulatory and similar matters
UBS AG
Events After The Reporting Period [Line Items]
Disclosure of events after reporting period [text block]	Note 34 Events after the reporting period Events subsequent to the publication of the unaudited fourth quarter 20 20 report The 2020 results and the balance sheet as of 31 December 2020 differ from those presented in the unaudited fourth quarter 2020 report published on 26 January 2021 as a result of events adjusted for after the balance sheet date. Provisions for litigation, regulatory and si milar matters increased, which reduced 2020 operating profit before tax and 2020 net profit attributable to shareholders each by USD 72 million. › Refer to Note 18 for more information about provisions for litigation, regulatory and similar matters

Main differences between IFRS a

Main differences between IFRS and Swiss GAAP	12 Months Ended
Main differences between IFRS and Swiss GAAP	Dec. 31, 2020
Main Differences Between IFRS And Swiss GAAP [Line Items]
Disclosure of main differences between IFRS and Swiss GAAP [text block]	Note 35 Main differences between IFRS and Swiss GAAP The consolidated financial statements of UBS Group AG are prepared in accordance with International Financial Reporting Standards (IFRS). The Swiss Financial Market Supervisory Authority (FINMA) requires financial groups that present their financial statements under IFRS to provide a narrative explanation of the main differences between IFR S and Swiss GAAP ( the FINMA Accounting Ordinance, FINMA Circular 2020/1 " Accounting – banks " and the Banking Ordinance). Included in this Note are the significant differences in the recognition and measurement between IFRS and the provisions of the Banking Ordinance and the guidelines of FINMA governing true and fair view financial statement reporting pursuant to Art. 25 through Art. 42 of the Banking Ordinance. 1. Consolidation Under IFRS, all entities that are controlled by the holding entity are consolid ated. Under Swiss GAAP, controlled entities that are deemed immaterial to the Group or that are held temporarily only are exempt from consolidation, but instead are recorded as participations accounted for under the equity method of accounting or as financ ial investments measured at the lower of cost or market value. 2. Classification and measurement of financial assets Under IFRS, debt instruments are measured at amortized cost, fair value through other comprehensive income (FVOCI) or fair value through profit or loss (FVTPL) , depending on the nature of the business model within which the asset is held and the characteristics of the contractual cash flows of the asset . E quity instruments are accounted for at FVTPL by UBS. Under Swiss GAAP, trading assets and derivatives are measured at FVTPL in line with IFRS. However, non-trading debt instruments are generally measured at amortized cost , even when the assets are managed on a fair value basis . In addition, t he measurement of financial assets in the form of securities depend s on the nature of the asset: debt instruments that are not held to maturity , i.e. , instruments which are available for sale, as well as equity instruments with no permanent holding intent, are classified as Financial investments and measured at the lower of (amortized) cost or market value. Market value adjustments up to the original cost amount and realized gains or losses upon di sposal of the investment are recorded in the income statement as Other income from ordinary activities. Equity instruments with a permanent holding intent are classified as participations in Non-consolidated investments in subsidiaries and other participat ions and are measured at cost less impairment. Impairment losses are recorded in the income statement as Impairment of investments in non-consolidated subsidiaries and other participations. Reversals of impairments up to the original cost amount as well a s realized gains or losses upon disposal of the investment are recorded as Extraordinary income / Extraordinary expenses in the income statement. 3. Fair value option applied to financial liabilities Under IFRS, UBS applies the fair value option to certain financial liabilities not held for trading. Instruments for which the fair value option is applied are accounted for at FVTPL. The amount of change in the fair value that is attributable to changes in UBS’s own credit is presented in Other comprehensive i ncome directly within Retained ear nings . The fair value option is applied primarily to issued structured debt instruments , certain non-structured debt instruments , certain payables under repurchase agreements and cash collateral on securities lending agree ments , amounts due under u nit-linked investment contracts, and brokerage payables. Under Swiss GAAP, the fair value option can only be applied to structured debt instruments that consist of a debt host contract and one or more embedded derivatives that do not relate to own equity. Furthermore, unrealized changes in fair value attributable to changes in UBS’s own credit are not recognized, whereas realized own credit is recognized in Net trading income . 4. Allowances and provisions for credit losses Swiss GAAP permits the use of IFRS for the accounting for allowances and provisions for credit losses based on an expected credit loss (ECL) model. UBS has chosen to apply the IFRS 9 ECL approach to the substantial majority of exposures in scope of the Swiss GAAP ECL requirements , including all exposures in scope of ECL under both Swiss GAAP and IFRS . In addition , for a small population of exp osures in scope of the Swiss GAAP ECL requirements, which are not subject to ECL under IFRS due to classification and measurements differences, UBS applies an alternative approach . Where the Pillar 1 internal ratings-based (IRB) models are applied for meas urement of credit risk, ECL for such exposures is determined by the regulatory expected loss (EL), with an add-on for scaling up to the residual maturity of exposures mat uring beyond the next 12 months . For detailed information on regulatory EL, refer to t he “ Risk management and control ” section of this report . For exposures for which the Pillar 1 standardized approach (SA) is applied for the measurement of credit risk, ECL is determined using a portfolio approach that derives conservative probability of default (PD) and loss given default (LGD) for the entire portfolio . 5. Hedge accounting Under IFRS, when cash flow hedge accounting is applied, the fair value gain or loss on the effective portion of the derivative designated as a cash flow hedge is recogni zed in equity. When fair value hedge accounting is applied, the fair value gains or losses of the derivative and the hedged item are recognized in the income statement. U nder Swiss GAAP, the effective portion of the fair value change of the derivative instrument designated as a cash flow or as a fair value hedge is deferred on the balance sheet as Other assets or Other liabilities . The carrying amount of the hedged item designated in fair value hedges is not adjusted for fair value changes attributable to the hedged risk. 6. Goodwill and intangible assets Under IFRS, goodwill acquired in a business combination is not amortized but tested annually for impairment. Intangible assets with an indefinite useful life are also not amortized but tested annually for impairment. Under Swiss GAAP, goodwill and intangible assets with indefinite useful lives are amortized over a period not exceeding five years, unless a longer useful life, which may not exceed 10 years, can be justified. In addition, these assets are tes ted annually for impairment. 7. P ost-employment benefit plans Swiss GAAP permits the use of IFRS or Swiss accounting standards for post-employment benefit plans, with the election made on a plan-by-plan basis. UBS has el ected to apply IFRS (IAS 19) for the non-Swiss defined benefit plans in UBS AG standalone financial statements and Swiss GAAP (FER 16) for the Swiss pension plan in the UBS AG and the UBS Switzerland AG standalone financial statements. The requirements of Swiss GAAP are better aligned with the specific nature of Swiss pension plans, which are hybrid in that they combine elements of defined contribution and defined benefit plans, but are treated as defined benefit plans under IFRS. Key differences between Sw iss GAAP and IFRS include the treatment of dynamic elements, such as future salary increases and future interest credits on retirement savings, which are not considered under the static method used in accordance with Swiss GAAP. Also, the discount rate use d to determine the defined benefit obligation in accordance with IFRS is based on the yield of high-quality corporate bonds of the market in the respective pension plan country. The discount rate used in accordance with Swiss GAAP (i.e., the technical inte rest rate) is determined by the Pension Foundation Board based on the expected returns of the Board’s investment strategy. For defined benefit plans, IFRS requires the full defined benefit obligation net of the plan assets to be recorded on the balance sheet, with changes resulting from remeasurements recognized directly in equity. However, for non -Swiss defined benefit plans for which IFRS accounting is elected, changes due to remeasurements are recognized in the income statement of UBS AG standalone under Swiss GAAP. Swiss GAAP requires that employer contributions to the pension fund are recognize d as personnel expenses in the income statement. Furthermore, Swiss GAAP requires an assessment as to whether, based on the financial statements of the pension fund prepared in accordance with Swiss accounting standards (FER 26), an economic benefit to, or obligation of, the employer arises from the pension fund which is recognized in the balance sheet when conditions are met. Conditions for recording a pension asset or liability would be met if, for example, an employer contribution reserve is available or the employer is required to contribute to the reduction of a pension deficit (on an FER 26 basis). 8. Leasing Under IFRS, a single lease accounting model applies that requires UBS to record a right-of-use (RoU) asset and a corresponding lease liability on the balance sheet when UBS is a lessee in a lease arrangement. The RoU asset and the lease liability are recognized when UBS acquires control of the physical use of the asset. The lease liability is measured based on the present value of the lease payment s over the lease term, discounted using UBS’s unsecured borrowing rate. The RoU asset is recorded at an amount equal to the lease liability but is adjusted for rent prepayments, initial direct costs, any costs to refurbish the leased asset and/or lease inc entives received. The RoU asset is depreciated over the shorter of the lease term or the useful life of the underlying asset. Under Swiss GAAP, leases that transfer substantially all the risks and rewards, but not necessarily legal title in the underlying assets, are classified as finance leases. All other leases are classified as operating leases. Whereas finance leases are recognized on the balance sheet and measured in line with IFRS, operating lease pay ments are recognized as General and administrative expenses on a straight-line basis over the lease term, which commences with control of the physical use of the asset. Lease incentives are treated as a reduction of rental expense and are recognized on a consistent basis over the lease term. 9. Netting of derivative assets and liabilities Under IFRS, derivative assets , derivative liabilities and related cash collateral that are not settled to market are reported on a gross basis unless the restrictive IFR S netting requirements are met: i) existence of master netting agreements and related collateral arrangements that are unconditional and legally enforceable, both in the normal course of business and in the event of default, bankruptcy or insolvency of UBS and its counterparties; and ii) UBS’s intention to either settle on a net basis or to realize the asset and settle the liability simultaneously. Under Swiss GAAP, derivative assets , derivative liabilities and related cash collateral that are not settled to market are generally reported on a net basis, provided the master netting and the related collateral agreements are legally enforceable in the event of default, bankruptcy or insolvency of UBS’s counterparties. 10. Negative interest Under IFRS, negative interest income arising on a financial asset does not meet the definition of interest income and, therefore, negative interest on financial assets and negative interest on financial liabilities are presented within interest expense and interest income, res pectively. Under Swiss GAAP, negative interest on financial assets is presented within interest income and negative interest on financial liabilities is presented within interest expense. 11. Extraordinary income and expense Certain non-recurring and non-o perating income and expense items, such as realized gains or losses from the disposal of participations, fixed and intangible assets, as well as reversals of impairments of participations and fixed assets, are classified as extraordinary items under Swiss GAAP. This distinction is not available under IFRS.
UBS AG
Main Differences Between IFRS And Swiss GAAP [Line Items]
Disclosure of main differences between IFRS and Swiss GAAP [text block]	Note 35 Main differences between IFRS and Swiss GAAP The consolidated financial statements of UBS AG are prepared in accordance with International Financial Reporting Standards (IFRS). The Swiss Financial Market Supervisory Authority (FINMA) requires financial groups that present their financial statements under IFRS to provide a narrative explanation of the main differences between IFR S and Swiss GAAP ( the FINMA Accounting Ordinance, FINMA Circular 2020/1 " Accounting – banks " and the Banking Ordinance). Included in this Note are the significant differences in the recognition and measurement between IFRS and the provisions of the Banking Ordinance and the guidelines of FINMA governing true and fair view financial statement reporting pursuant to Art. 25 through Art. 42 of the Banking Ordinance. 1. Consolidation Under IFRS, all entities that are controlled by the holding entity are consolid ated. Under Swiss GAAP, controlled entities that are deemed immaterial to the UBS AG or that are held temporarily only are exempt from consolidation, but instead are recorded as participations accounted for under the equity method of accounting or as finan cial investments measured at the lower of cost or market value. 2. Classification and measurement of financial assets Under IFRS, debt instruments are measured at amortized cost, fair value through other comprehensive income (FVOCI) or fair value through p rofit or loss (FVTPL) , depending on the nature of the business model within which the asset is held and the characteristics of the contractual cash flows of the asset . E quity instruments are accounted for at FVTPL by UBS AG . Under Swiss GAAP, trading assets and derivatives are measured at FVTPL in line with IFRS. However, non-trading debt instruments are generally measured at amortized cost , even when the assets are managed on a fair value basis . In addition, t he measurement of financial assets in the form of securities depend s on the nature of the asset: debt instruments that are not held to maturity , i.e. , instruments which are available for sale, as well as equity instruments with no permanent holding intent, are classified as Financial investments and measured at the lower of (amortized) cost or market value. Market value adjustments up to the original cost amount and realized gains or losses upon disposal of the investment are recorded in the income statement as Other income from ordinary activiti es. Equity instruments with a permanent holding intent are classified as participations in Non-consolidated investments in subsidiaries and other participations and are measured at cost less impairment. Impairment losses are recorded in the income statement as Impairment of investments in non-consolidated subsidiaries and other participations. Reversals of impairments up to the original cost amount as well as realized gains or losses upon disposal of the investment are recorded as Extraordinary income / Extraordinary expenses in the income statement. 3. Fair value option applied to financial liabilities Under IFRS, UBS AG applies the fair value option to certain financial liabilities not held for trading. Instruments for which the fair value option is applied are accounted for at FVTPL. The amount of change in the fair value that is attributable to changes in UBS AG ’s own credit is presented in Other comprehensive income directly within Retained ear nings . T he fair value option is applied primarily to issued structured debt instruments , certain non-structured debt instruments , certain payables under repurchase agreements and cash collateral on securities lending agreements , amounts due under u nit-linked investment contracts, and brokerage payables. Under Swiss GAAP, the fair value option can only be applied to structured debt instruments that consist of a debt host contract and one or more embedded derivatives that do not relate to own equity. Furthermore, unr ealized changes in fair value attributable to changes in UBS AG ’s own credit are not recognized, whereas realized own credit is recognized in Net trading income . 4. Allowances and provisions for credit losses Swiss GAAP permits the use of IFRS for the accounting for allowances and provisions for credit losses based on an expected credit loss (ECL) model. UBS AG has chosen to apply the IFRS 9 ECL approach to the substantial majority of exposures in scope of the Swiss GAAP ECL requirements , including all exposures in scope of ECL under both Swiss GAAP and IFRS . In addition , for a small population of exposures in s cope of the Swiss GAAP ECL requirements, which are not subject to ECL under IFRS due to classification and measurements differences, UBS AG applies an alternative approach . Where the Pillar 1 internal ratings-based (IRB) models are applied for measurement of credit risk, ECL for such exposures is determined by the regulatory expected loss (EL), with an add-on for scaling up to the residual maturity of exposures mat uring beyond the next 12 months . For detailed information on regulatory EL, refer to the “ Risk management and control ” section of this report . For exposures for which the Pillar 1 standardized approach (SA) is applied for the measurement of credit risk, ECL is determined using a portfolio approach that derives conservative probability of default (PD) and loss given default (LGD) for the entire portfolio . 5. Hedge accounting Under IFRS, when cash flow hedge accounting is applied, the fair value gain or loss on the effective portion of the derivative designated as a cash flow hedge is recognized in e quity. When fair value hedge accounting is applied, the fair value gains or losses of the derivative and the hedged item are recognized in the income statement. U nder Swiss GAAP, the effective portion of the fair value change of the derivative instrument designated as a cash flow or as a fair value hedge is deferred on the balance sheet as Other assets or Other liabilities . The carrying amount of the hedged item designated in fair value hedges is not adjusted for fair value changes attributable to the hedged risk. 6. Goodwill and intangible assets Under IFRS, goodwill acquired in a business combination is not amortized but tested annually for impairment. Intangible assets with an indefinite useful life are also not amortized but tested annually for impairment. Under Swiss GAAP, goodwill and intangible assets with indefinite useful lives are amortized over a period not exceeding five years, unless a longer useful lif e, which may not exceed 10 years, can be justified. In addition, these assets are tested annually for impairment. 7. P ost-employment benefit plans Swiss GAAP permits the use of IFRS or Swiss accounting standards for post-employment benefit plans, with the election made on a plan-by-plan basis. UBS AG has elected to apply IFRS (IAS 19) for the non-Swiss defined benefit plans and Swiss GAAP (FER 16) for the Swiss pension plan in its standalone financial statements . The requirements of Swiss GAAP are better aligned with the specific nature of Swiss pension plans, which are hybrid in that they combine elements of defined contribution and defined benefit plans, but are treated as defined benefit plans under IFRS. Key differ ences between Swiss GAAP and IFRS include the treatment of dynamic elements, such as future salary increases and future interest credits on retirement savings, which are not considered under the static method used in accordance with Swiss GAAP. Also, the d iscount rate used to determine the defined benefit obligation in accordance with IFRS is based on the yield of high-quality corporate bonds of the market in the respective pension plan country. The discount rate used in accordance with Swiss GAAP (i.e., th e technical interest rate) is determined by the Pension Foundation Board based on the expected returns of the Board’s investment strategy. For defined benefit plans, IFRS requires the full defined benefit obligation net of the plan assets to be recorded on the balance sheet, with changes resulting from remeasurements recognized directly in equity. Howe ver, for non-Swiss defined benefit plans for which IFRS accounting is elected, changes due to remeasurements are recognized in the income statement of UBS AG standalone under Swiss GAAP. Swiss GAAP requires that employer contributions to the pension fund a re recognized as personnel expenses in the income statement. Furthermore, Swiss GAAP requires an assessment as to whether, based on the financial statements of the pension fund prepared in accordance with Swiss accounting standards (FER 26), an economic be nefit to, or obligation of, the employer arises from the pension fund which is recognized in the balance sheet when conditions are met. Conditions for recording a pension asset or liability would be met if, for example, an employer contribution reserve is available or the employer is required to contribute to the reduction of a pension deficit (on an FER 26 basis). 8. Leasing Under IFRS, a single lease accounting model applies that requires UBS AG to record a right-of-use (RoU) asset and a corresponding lease liability on the balance sheet when UBS AG is a lessee in a lease arrangement. The RoU asset and the lease liability are recognized when UBS AG acquires control of the physical use of the asse t. The lease liability is measured based on the present value of the lease payments over the lease term, discounted using UBS AG ’s unsecured borrowing rate. The RoU asset is recorded at an amount equal to the lease liability but is adjusted for rent prepay ments, initial direct costs, any costs to refurbish the leased asset and/or lease incentives received. The RoU asset is depreciated over the shorter of the lease term or the useful life of the underlying asset. Under Swiss GAAP, leases that transfer substa ntially all the risks and rewards, but not necessarily legal title in the underlying assets, are classified as finance leases. All other leases are classified as operating leases. Whereas finance leases are recognized on the balance sheet and measured in l ine with IFRS, operating lease payments are recognized as General and administrative expenses on a straight-line basis over the lease term, which commences with control of the physical use of the asset. Lease incentives are treated as a reduction of renta l expense and are recognized on a consistent basis over the lease term. 9. Netting of derivative assets and liabilities Under IFRS, derivative assets , derivative liabilities and related cash collateral that are not settled to market are reported on a gros s basis unless the restrictive IFRS netting requirements are met: i) existence of master netting agreements and related collateral arrangements that are unconditional and legally enforceable, both in the normal course of business and in the event of defaul t, bankruptcy or insolvency of UBS AG and its counterparties; and ii) UBS AG ’s intention to either settle on a net basis or to realize the asset and settle the liability simultaneously. Under Swiss GAAP, derivative assets , derivative liabilities and related cash collateral that are not settled to market are generally reported on a net basis, provided the master netting and the related collateral agreements are legally enforceable in the event of default, bankruptcy or insolvency of UBS AG ’s counterparties. 10. Negative interest Under IFRS, negative interest income arising on a financial asset does not meet the definition of interest income and, therefore, negative interest on financial assets and negative interest on financial liabilities are presented withi n interest expense and interest income, respectively. Under Swiss GAAP, negative interest on financial assets is presented within interest income and negative interest on financial liabilities is presented within interest expense. 11. Extraordinary income and expense Certain non-recurring and non-operating income and expense items, such as realized gains or losses from the disposal of participations, fixed and intangible assets, as well as reversals of impairments of participations and fixed assets, are cla ssified as extraordinary items under Swiss GAAP. This distinction is not available under IFRS.

Supplemental guarantor informat

Supplemental guarantor information required under SEC regulations	12 Months Ended
	Dec. 31, 2020
UBS AG
Supplemental Guarantor Information [Line Items]
Condensed Financial Information Of Parent Company Only Disclosure [Text Block]	Note 36 Supplemental guarantor information required under SEC regulations Joint liability of UBS Switzerland AG In 2015, the Personal & Corporate Banking and Wealth Management businesses booked in Switzerland were transferred from UBS AG to UBS Switzerland AG through an asset transfer in accordance with the Swiss Merger Act. Under the terms of the asset transfer agreement, UBS Switzerland AG assumed joint liability for contractual obligations of UBS AG existing on the asset transfer date, including the full and unconditional guarantee of certain registered debt securities issued by UBS AG. To reflect this joint liability, UBS Switzerland AG is presented in a separate column as a subsidiary co-guarantor. The joint liability of UBS Switzerland AG for contractual obligations of UBS AG decreased in 2020 by USD 7.3 billion to USD 10.1 billion as of 31 December 2020, mainly driven by contractual maturities and, to a lesser extent, early extinguishments of UBS AG liabilities which existed at the date of the asset transfer in the second quarter of 2015. Supplemental guarantor consolidated income statement USD million UBS AG (standalone) 1 UBS Switzerland AG (standalone) 1 Other subsidiaries 2 Elimination entries UBS AG (consolidated) For the year ended 31 December 2020 Operating income Interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 3,386 3,636 2,612 (818) 8,816 Interest expense from financial instruments measured at amortized cost (3,694) (513) (1,261) 1,134 (4,333) Net interest income from financial instruments measured at fair value through profit or loss 1,103 164 311 (273) 1,305 Net interest income 794 3,288 1,662 43 5,788 Other net income from financial instruments measured at fair value through profit or loss 4,857 911 1,044 118 6,930 Credit loss (expense) / release (352) (286) (56) 0 (695) Fee and commission income 3,731 4,585 13,651 (984) 20,982 Fee and commission expense (644) (829) (1,263) 961 (1,775) Net fee and commission income 3,087 3,756 12,388 (23) 19,207 Other income 4,671 233 2,585 (5,941) 1,549 Total operating income 13,057 7,902 17,623 (5,803) 32,780 Operating expenses Personnel expenses 3,458 2,017 9,211 0 14,686 General and administrative expenses 3,507 3,313 4,147 (2,481) 8,486 Depreciation and impairment of property, equipment and software 1,008 261 698 (116) 1,851 Amortization and impairment of goodwill and intangible assets 5 0 52 1 57 Total operating expenses 7,978 5,591 14,108 (2,596) 25,081 Operating profit / (loss) before tax 5,079 2,311 3,515 (3,207) 7,699 Tax expense / (benefit) 238 444 912 (107) 1,488 Net profit / (loss) 4,840 1,868 2,603 (3,100) 6,211 Net profit / (loss) attributable to non-controlling interests 0 0 15 0 15 Net profit / (loss) attributable to shareholders 4,840 1,868 2,588 (3,100) 6,196 1 Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP. 2 The ”Other subsidiaries“ column includes consolidated information for the UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG significant sub-groups, as well as standalone information for other subsidiaries. Supplemental guarantor consolidated statement of comprehensive income USD million UBS AG (standalone) 1 UBS Switzerland AG (standalone) 1 Other subsidiaries 2 Elimination entries UBS AG (consolidated) For the year ended 31 December 2020 Comprehensive income attributable to shareholders Net profit / (loss) 4,840 1,868 2,588 (3,100) 6,196 Other comprehensive income Other comprehensive income that may be reclassified to the income statement Foreign currency translation, net of tax 81 1,228 690 (969) 1,030 Financial assets measured at fair value through other comprehensive income, net of tax 0 0 137 0 136 Cash flow hedges, net of tax 902 26 101 (18) 1,011 Cost of hedging, net of tax (13) (13) Total other comprehensive income that may be reclassified to the income statement, net of tax 971 1,254 928 (988) 2,165 Other comprehensive income that will not be reclassified to the income statement Defined benefit plans, net of tax (67) (107) 40 0 (134) Own credit on financial liabilities designated at fair value, net of tax (293) (293) Total other comprehensive income that will not be reclassified to the income statement, net of tax (360) (107) 40 0 (427) Total other comprehensive income 611 1,147 968 (988) 1,738 Total comprehensive income attributable to shareholders 5,451 3,015 3,556 (4,088) 7,934 Total comprehensive income attributable to non-controlling interests 36 36 Total comprehensive income 5,451 3,015 3,592 (4,088) 7,970 1 Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP. 2 The ”Other subsidiaries“ column includes consolidated information for the UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG significant sub-groups, as well as standalone information for other subsidiaries. Supplemental guarantor consolidated balance sheet USD million UBS AG (standalone) 1 UBS Switzerland AG (standalone) 1 Other subsidiaries 2 Elimination entries UBS AG (consolidated) As of 31 December 2020 Assets Cash and balances at central banks 34,426 91,638 32,167 158,231 Loans and advances to banks 40,171 6,385 19,465 (50,678) 15,344 Receivables from securities financing transactions 56,568 4,026 43,350 (29,735) 74,210 Cash collateral receivables on derivative instruments 32,771 1,543 10,093 (11,671) 32,737 Loans and advances to customers 99,952 228,279 73,513 (20,767) 380,977 Other financial assets measured at amortized cost 8,411 8,084 13,368 (2,644) 27,219 Total financial assets measured at amortized cost 272,299 339,956 191,957 (115,495) 688,717 Financial assets at fair value held for trading 110,812 55 16,260 (1,634) 125,492 of which: assets pledged as collateral that may be sold or repledged by counterparties 54,468 1 6,247 (13,617) 47,098 Derivative financial instruments 154,313 6,342 44,005 (45,041) 159,618 Brokerage receivables 16,898 7,763 (2) 24,659 Financial assets at fair value not held for trading 46,198 13,068 36,444 (15,672) 80,038 Total financial assets measured at fair value through profit or loss 328,221 19,464 104,473 (62,350) 389,808 Financial assets measured at fair value through other comprehensive income 187 8,072 8,258 Investments in subsidiaries and associates 53,606 38 439 (52,526) 1,557 Property, equipment and software 6,999 1,335 3,975 (350) 11,958 Goodwill and intangible assets 217 6,234 28 6,480 Deferred tax assets 840 1 8,334 (1) 9,174 Other non-financial assets 6,641 2,063 854 (183) 9,374 Total assets 669,010 362,857 324,337 (230,878) 1,125,327 Liabilities Amounts due to banks 41,414 34,096 43,066 (107,527) 11,050 Payables from securities financing transactions 17,247 566 18,407 (29,899) 6,321 Cash collateral payables on derivative instruments 35,875 561 12,495 (11,618) 37,313 Customer deposits 98,441 293,371 112,372 23,745 527,929 Funding from UBS Group AG and its subsidiaries 3 53,979 53,979 Debt issued measured at amortized cost 75,658 9,687 3 3 85,351 Other financial liabilities measured at amortized cost 5,285 2,567 5,745 (3,175) 10,421 Total financial liabilities measured at amortized cost 327,898 340,848 192,088 (128,470) 732,364 Financial liabilities at fair value held for trading 28,800 335 5,989 (1,529) 33,595 Derivative financial instruments 156,192 5,593 44,359 (45,043) 161,102 Brokerage payables designated at fair value 25,045 13,704 (7) 38,742 Debt issued designated at fair value 58,986 935 (54) 59,868 Other financial liabilities designated at fair value 11,255 23,445 (2,927) 31,773 Total financial liabilities measured at fair value through profit or loss 280,279 5,927 88,433 (49,559) 325,080 Provisions 1,293 301 1,197 2,791 Other non-financial liabilities 2,173 987 3,907 (49) 7,018 Total liabilities 611,643 348,063 285,625 (178,078) 1,067,254 Equity attributable to shareholders 57,367 14,794 38,393 (52,800) 57,754 Equity attributable to non-controlling interests 319 319 Total equity 57,367 14,794 38,712 (52,800) 58,073 Total liabilities and equity 669,010 362,857 324,337 (230,878) 1,125,327 1 Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP. 2 The ”Other subsidiaries“ column includes consolidated information for the UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG significant sub-groups, as well as standalone information for other subsidiaries. 3 Represents funding from UBS Group AG to UBS AG. Supplemental guarantor consolidated statement of cash flows USD million UBS AG 1 UBS Switzerland AG 1 Other subsidiaries 1 UBS AG (consolidated) For the year ended 31 December 2020 Net cash flow from / (used in) operating activities (14,883) 24,661 26,804 36,581 Cash flow from / (used in) investing activities Purchase of subsidiaries, associates and intangible assets 0 (3) (43) (46) Disposal of subsidiaries, associates and intangible assets 2 14 0 660 674 Purchase of property, equipment and software (714) (162) (697) (1,573) Disposal of property, equipment and software 361 0 3 364 Purchase of financial assets measured at fair value through other comprehensive income (77) 0 (6,213) (6,290) Disposal and redemption of financial assets measured at fair value through other comprehensive income 79 0 4,451 4,530 Net (purchase) / redemption of debt securities measured at amortized cost (3,021) 132 (1,277) (4,166) Net cash flow from / (used in) investing activities (3,357) (33) (3,117) (6,506) Cash flow from / (used in) financing activities Net short-term debt issued / (repaid) 23,828 17 0 23,845 Distributions paid on UBS AG shares (3,848) 0 0 (3,848) Repayment of lease liabilities (290) 0 (257) (547) Issuance of long-term debt, including debt issued designated at fair value 70,987 1,057 229 72,273 Repayment of long-term debt, including debt issued designated at fair value (82,930) (776) (118) (83,825) Funding from UBS Group AG and its subsidiaries 3 4,606 0 0 4,606 Net changes in non-controlling interests 0 0 (6) (6) Net activity related to group internal capital transactions and dividends 2,984 (1,307) (1,677) 0 Net cash flow from / (used in) financing activities 15,336 (1,009) (1,829) 12,498 Total cash flow Cash and cash equivalents at the beginning of the year 39,598 62,551 17,655 119,804 Net cash flow from / (used in) operating, investing and financing activities (2,905) 23,619 21,859 42,573 Effects of exchange rate differences on cash and cash equivalents 2,706 7,171 1,175 11,053 Cash and cash equivalents at the end of the year 4 39,400 93,342 40,689 173,430 of which: cash and balances at central banks 34,283 91,638 32,167 158,088 of which: loans and advances to banks 4,085 1,695 8,148 13,928 of which: money market paper 5 1,032 9 374 1,415 1 Cash flows generally represent a third-party view from a UBS AG consolidated perspective, except for Net activity related to group internal capital transactions and dividends. 2 Includes cash proceeds from the sale of the majority stake in Fondcenter AG of USD 426 million. Also includes dividends received from associates. 3 Represents funding from UBS Group AG to UBS AG. 4 Comprises balances with an original maturity of three months or less. USD 3,828 million of cash and cash equivalents were restricted. 5 Money market paper is included in the balance sheet under Financial assets at fair value held for trading, Financial assets measured at fair value through other comprehensive income, Financial assets at fair value not held for trading and Other financial assets measured at amortized cost. Supplemental guarantor consolidated income statement USD million UBS AG (standalone) 1,2 UBS Switzerland AG (standalone) 1 Other subsidiaries 3 Elimination entries UBS AG (consolidated) For the year ended 31 December 2019 Operating income Interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 4,864 4,048 3,719 (1,928) 10,703 Interest expense from financial instruments measured at amortized cost (6,547) (737) (2,317) 2,298 (7,303) Net interest income from financial instruments measured at fair value through profit or loss 1,177 (228) 394 (327) 1,015 Net interest income (506) 3,083 1,796 42 4,415 Other net income from financial instruments measured at fair value through profit or loss 5,116 924 1,114 (322) 6,833 Credit loss (expense) / release (51) 7 (33) 0 (78) Fee and commission income 3,285 4,342 12,527 (997) 19,156 Fee and commission expense (674) (819) (1,188) 986 (1,696) Net fee and commission income 2,610 4 3,523 4 11,338 (11) 17,460 Other income 4,899 259 1,960 (6,442) 677 Total operating income 12,069 7,796 16,176 (6,733) 29,307 Operating expenses Personnel expenses 3,251 1,936 8,614 0 13,801 General and administrative expenses 3,467 3,181 4,565 (2,627) 8,586 Depreciation and impairment of property, equipment and software 861 221 602 (108) 1,576 Amortization and impairment of goodwill and intangible assets 94 0 170 (88) 175 Total operating expenses 7,672 5,338 13,951 (2,823) 24,138 Operating profit / (loss) before tax 4,396 2,458 2,225 (3,911) 5,169 Tax expense / (benefit) 175 514 530 (21) 1,198 Net profit / (loss) 4,221 1,944 1,695 (3,890) 3,971 Net profit / (loss) attributable to non-controlling interests 0 0 6 0 6 Net profit / (loss) attributable to shareholders 4,221 1,944 1,689 (3,889) 3,965 1 Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP. 2 Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in a decrease in Net profit attributable to shareholders for the year ended 31 December 2019 of USD 61 million, almost entirely reflected within Other income. 3 The ”Other subsidiaries“ column includes consolidated information for the UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG significant sub-groups, as well as standalone information for other subsidiaries. 4 Includes the effects of the transfer in 2019 of beneficial ownership of a portion of Global Wealth Management international business booked in Switzerland from UBS Switzerland AG to UBS AG. Refer to “Note 25 Changes in organization and other events affecting comparability” in the “UBS AG standalone financial statements” section of the UBS AG Standalone financial statements and regulatory information for the year ended 31 December 2019. Supplemental guarantor consolidated statement of comprehensive income USD million UBS AG (standalone) 1,2 UBS Switzerland AG (standalone) 1 Other subsidiaries 3 Elimination entries UBS AG (consolidated) For the year ended 31 December 2019 Comprehensive income attributable to shareholders Net profit / (loss) 4,221 1,944 1,689 (3,889) 3,965 Other comprehensive income Other comprehensive income that may be reclassified to the income statement Foreign currency translation, net of tax 5 150 39 (102) 92 Financial assets measured at fair value through other comprehensive income, net of tax 0 0 117 0 117 Cash flow hedges, net of tax 870 140 147 (15) 1,143 Total other comprehensive income that may be reclassified to the income statement, net of tax 875 290 303 (117) 1,351 Other comprehensive income that will not be reclassified to the income statement Defined benefit plans, net of tax (89) (6) (75) 0 (170) Own credit on financial liabilities designated at fair value, net of tax (392) (392) Total other comprehensive income that will not be reclassified to the income statement, net of tax (481) (6) (75) 0 (562) Total other comprehensive income 394 284 228 (117) 789 Total comprehensive income attributable to shareholders 4,616 2,228 1,917 (4,007) 4,754 Total comprehensive income attributable to non-controlling interests 2 2 Total comprehensive income 4,616 2,228 1,919 (4,007) 4,756 1 Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP. 2 Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in a decrease in Total comprehensive income attributable to shareholders for the year ended 31 December 2019 of USD 56 million, reflecting a decrease of USD 61 million in Net profit attributable to shareholders and a USD 6 million increase in Total other comprehensive income attributable to shareholders. 3 The ”Other subsidiaries“ column includes consolidated information for the significant sub-groups UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG, as well as standalone information for other subsidiaries. Supplemental guarantor consolidated balance sheet USD million UBS AG (standalone) 1,2 UBS Switzerland AG (standalone) 1 Other subsidiaries 3 Elimination entries UBS AG (consolidated) As of 31 December 2019 Assets Cash and balances at central banks 36,386 60,926 9,756 107,068 Loans and advances to banks 32,888 7,992 17,430 (45,931) 12,379 Receivables from securities financing transactions 56,946 12,536 42,534 (27,771) 84,245 Cash collateral receivables on derivative instruments 22,830 990 8,508 (9,038) 23,289 Loans and advances to customers 88,386 193,543 63,676 (17,612) 327,992 Other financial assets measured at amortized cost 5,723 8,168 11,448 (2,327) 23,012 Total financial assets measured at amortized cost 243,159 284,154 153,351 (102,679) 577,985 Financial assets at fair value held for trading 113,802 53 15,320 (1,479) 127,695 of which: assets pledged as collateral that may be sold or repledged by counterparties 58,599 0 5,386 (22,701) 41,285 Derivative financial instruments 118,708 4,251 29,782 (30,899) 121,843 Brokerage receivables 11,453 6,556 (1) 18,007 Financial assets at fair value not held for trading 49,525 6,701 41,908 (14,498) 83,636 Total financial assets measured at fair value through profit or loss 293,488 11,004 93,565 (46,877) 351,181 Financial assets measured at fair value through other comprehensive income 176 6,169 6,345 Investments in subsidiaries and associates 52,140 28 39 (51,156) 1,051 Property, equipment and software 7,318 1,144 3,749 (385) 11,826 Goodwill and intangible assets 222 6,212 35 6,469 Deferred tax assets 4 618 0 8,906 9,524 Other non-financial assets 5,060 1,770 857 (140) 7,547 Total assets 602,181 298,101 272,848 (201,202) 971,927 Liabilities Amounts due to banks 55,738 28,240 35,773 (113,181) 6,570 Payables from securities financing transactions 21,326 565 13,583 (27,696) 7,778 Cash collateral payables on derivative instruments 30,571 98 9,773 (9,027) 31,416 Customer deposits 85,954 239,226 86,550 38,861 450,591 Funding from UBS Group AG and its subsidiaries 5 47,866 47,866 Debt issued measured at amortized cost 54,317 8,583 5 (70) 62,835 Other financial liabilities measured at amortized cost 5,347 2,666 5,204 (2,844) 10,373 Total financial liabilities measured at amortized cost 301,119 279,379 150,888 (113,956) 617,429 Financial liabilities at fair value held for trading 25,292 383 6,233 (1,317) 30,591 Derivative financial instruments 117,597 4,046 30,089 (30,852) 120,880 Brokerage payables designated at fair value 25,358 11,877 (3) 37,233 Debt issued designated at fair value 65,677 952 (38) 66,592 Other financial liabilities designated at fair value 8,571 31,031 (3,445) 36,157 Total financial liabilities measured at fair value through profit or loss 242,495 4,429 80,184 (35,655) 291,452 Provisions 1,101 196 1,641 2,938 Other non-financial liabilities 4 1,657 931 3,602 21 6,211 Total liabilities 546,372 284,936 236,314 (149,591) 918,031 Equity attributable to shareholders 55,808 13,165 36,359 (51,611) 53,722 Equity attributable to non-controlling interests 174 174 Total equity 55,808 13,165 36,534 (51,611) 53,896 Total liabilities and equity 602,181 298,101 272,848 (201,202) 971,927 1 Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP. 2 Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in an increase in Investments in subsidiaries and associates as of 31 December 2019 of USD 929 million and an increase in Equity attributable to shareholders as of 31 December 2019 of USD 914 million. 3 The ”Other subsidiaries“ column includes consolidated information for the UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG significant sub-groups, as well as standalone information for other subsidiaries. 4 Comparative-period information has been restated. Refer to Note 1b for more information. 5 Represents funding from UBS Group AG to UBS AG. Supplemental guarantor consolidated statement of cash flows USD million UBS AG 1 UBS Switzerland AG 1 Other subsidiaries 1 UBS AG (consolidated) For the year ended 31 December 2019 Net cash flow from / (used in) operating activities 17,531 8,882 (7,608) 18,805 Cash flow from / (used in) investing activities Purchase of subsidiaries, associates and intangible assets (6) 0 (20) (26) Disposal of subsidiaries, associates and intangible assets 2 100 0 14 114 Purchase of property, equipment and software (628) (173) (600) (1,401) Disposal of property, equipment and software 10 0 1 11 Purchase of financial assets measured at fair value through other comprehensive income (10) 0 (3,414) (3,424) Disposal and redemption of financial assets measured at fair value through other comprehensive income 10 0 3,904 3,913 Net (purchase) / redemption of debt securities measured at amortized cost (1,045) 437 45 (562) Net cash flow from / (used in) investing activities (1,569) 264 (70) (1,374) Cash flow from / (used in) financing activities Net short-term debt issued / (repaid) (17,150) 0 0 (17,149) Distributions paid on UBS AG shares (3,250) 0 0 (3,250) Repayment of lease liabilities (262) 0 (234) (496) Issuance of long-term debt, including debt issued designated at fair value 58,437 621 142 59,199 Repayment of long-term debt, including debt issued designated at fair value (67,113) (752) (1,017) (68,883) Funding from UBS Group AG and its subsidiaries 3 5,848 0 0 5,848 Net changes in non-controlling interests 0 0 (8) (8) Net activity related to group internal capital transactions and dividends 3,569 (2,055) (1,514) 0 Net cash flow from / (used in) financing activities (19,922) (2,186) (2,630) (24,738) Total cash flow Cash and cash equivalents at the beginning of the year 42,895 54,757 28,201 125,853 Net cash flow from / (used in) operating, investing and financing activities (3,960) 6,961 (10,308) (7,307) Effects of exchange rate differences on cash and cash equivalents 664 833 (239) 1,258 Cash and cash equivalents at the end of the year 4 39,598 62,551 17,655 119,804 of which: cash and balances at central banks 36,275 60,926 9,756 106,957 of which: loans and advances to banks 2,697 1,127 7,493 11,317 of which: money market paper 5 626 498 406 1,530 1 Cash flows generally represent a third-party view from a UBS AG consolidated perspective, except for Net activity related to group internal capital transactions and dividends. 2 Includes dividends received from associates. 3 Represents funding from UBS Group AG to UBS AG. 4 Comprises balances with an original maturity of three months or less. USD 3,192 million of cash and cash equivalents were restricted. 5 Money market paper is included in the balance sheet under Financial assets at fair value held for trading, Financial assets measured at fair value through other comprehensive income, Financial assets at fair value not held for trading and Other financial assets measured at amortized cost. Supplemental guarantor consolidated income statement USD million UBS AG (standalone) 1,2 UBS Switzerland AG (standalone) 1 Other subsidiaries 3 Elimination entries UBS AG (consolidated) For the year ended 31 December 2018 Operating income Interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 4,532 4,230 3,634 (2,275) 10,121 Interest expense from financial instruments measured at amortized cost (6,109) (598) (2,192) 2,405 (6,494) Net interest income from financial instruments measured at fair value through profit or loss 1,079 (270) 625 (91) 1,344 Net interest income (497) 3,363 2,068 38 4,971 Other net income from financial instruments measured at fair value through profit or loss 5,204 889 970 (110) 6,953 Credit loss (expense) / release (37) (52) (9) (19) (117) Fee and commission income 2,655 4,474 13,159 (656) 19,632 Fee and commission expense (851) (391) (1,108) 648 (1,703) Net fee and commission income 1,804 4,083 12,050 (8) 17,930 Other income 5,248 198 2,110 (6,651) 905 Total operating income 11,722 8,480 17,189 (6,749) 30,642 Operating expenses Personnel expenses 3,592 1,890 8,510 0 13,992 General and administrative expenses 4,691 3,471 5,403 (3,490) 10,075 Depreciation and impairment of property, equipment and software 715 21 316 0 1,052 Amortization and impairment of goodwill and intangible assets 3 0 62 0 65 Total operating expenses 9,001 5,382 14,291 (3,490) 25,184 Operating profit / (loss) before tax 2,721 3,098 2,898 (3,259) 5,458 Tax expense / (benefit) 29 670 577 68 1,345 Net profit / (loss) 2,691 2,428 2,321 (3,327) 4,113 Net profit / (loss) attributable to non-controlling interests 0 0 7 0 7 Net profit / (loss) attributable to shareholders 2,691 2,428 2,314 (3,327) 4,107 1 Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP. 2 Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in an increase in Net profit attributable to shareholders for the year ended 31 December 2018 of USD 521 million, almost entirely reflected within Other income. 3 The ”Other subsidiaries“ column includes consolidated information for the UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG significant sub-groups, as well as standalone information for other subsidiaries. Supplemental guarantor consolidated statement of comprehensive income USD million UBS AG (standalone) 1,2 UBS Switzerland AG (standalone) 1 Other subsidiaries 3 Elimination entries UBS AG (consolidated) For the year ended 31 December 2018 Comprehensive income attributable to shareholders Net profit / (loss) 2,691 2,428 2,314 (3,327) 4,107 Other comprehensive income Other comprehensive income that may be reclassified to the income statement Foreign currency translation, net of tax (452) (109) 215 (169) (515) Financial assets measured at fair value through other comprehensive income, net of tax 0 0 (45) 0 (45) Cash flow hedges, net of tax (277) 2 19 (13) (269) Total other comprehensive income that may be reclassified to the income statement, net of tax (729) (107) 189 (182) (829) Other comprehensive income that will not be reclassified to the income statement Defined benefit plans, net of tax 89 (126) 212 0 175 Own credit on financial liabilities designated at fair value, net of tax 509 509 Total other comprehensive income that will not be reclassified to the income statement, net of tax 598 (126) 212 0 684 Total other comprehensive income (131) (233) 401 (182) (145) Total comprehensive income attributable to shareholders 2,560 2,195 2,715 (3,509) 3,961 Total comprehensive income attributable to non-controlling interests 5 5 Total comprehensive income 2,560 2,195 2,721 (3,509) 3,967 1 Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP. 2 Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in an increase in Total comprehensive income attributable to shareholders for the year ended 31 December 2018 of USD 438 million, reflecting an increase of USD 521 million in Net profit attributable to shareholders and a USD 83 million decrease in Total other comprehensive income attributable to shareholders. 3 The ”Other subsidiaries“ column includes consolidated information for the significant sub-groups UBS Americas Holding LLC, UBS Europe SE, UBS Asset Management AG and UBS Limited, as well as standalone information for other subsidiaries. Supplemental guarantor consolidated statement of cash flows USD million UBS AG 2 UBS Switzerland AG 2 Other subsidiaries 2 UBS AG (consolidated) For the year ended 31 December 2018 1 Net cash flow from / (used in) operating activities (652) 14,887 13,509 27,744 Cash flow from / (used in) investing activities Purchase of subsidiaries, associates and intangible assets (124) (5) (158) (287) Disposal of subsidiaries, associates and intangible assets 3 97 0 40 137 Purchase of property, equipment and software (822) (170) (481) (1,473) Disposal of property, equipment and software 111 0 3 114 Purchase of financial assets measured at fair value through other comprehensive income (170) 0 (1,829) (1,999) Disposal and redemption of financial assets measured at fair value through other comprehensive income 20 15 1,325 1,361 Net (purchase) / redemption of debt securities measured at amortized cost (1,000) 2,111 (4,881) (3,770) Net cash flow from / (used in) investing activities (1,888) 1,951 (5,982) (5,918) Cash flow from / (used in) financing activities Net short-term debt issued / (repaid) (12,295) (3) 53 (12,245) Distributions paid on UBS AG shares (3,098) 0 0 (3,098) Issuance of long-term debt, including debt issued designated at fair value 53,294 872 560 54,726 Repayment of long-term debt, including debt issued designated at fair value (42,759) (812) (772) (44,344) Funding from UBS Group AG and its subsidiaries 4 5,956 0 0 5,956 Net changes in non-controlling interests 0 0 (31) (31) Net activity related to group internal capital transactions and dividends 3,000 (2,372) (628)

MD&A - Risk management and cont

MD&A - Risk management and control	12 Months Ended
MD&A - Risk management and control	Dec. 31, 2020
MDA Risk Management And Control [Line Items]
Disclosure Of Financial Risk Management Explanatory	Audited \| Credit risk: the risk of loss resulting from the failure of a client or counterparty to meet its contractual obligations toward UBS. This includes settlement risk, loan underwriting risk and step-in risk. Settlement risk: the risk of loss resulting from transactions that involve exchange of value (e.g., security versus cash) where we must deliver without first being able to determine with certainty that we will receive the countervalue. Loan underwriting risk: the risk of loss arising during the holding period of financing transactions that are intended for further distribution. Step-in risk: the risk that UBS may decide to provide financial support to an unconsolidated entity that is facing stress in the absence of, or in excess of, any contractual obligations to provide such support. p Audited \| Market risk (traded and non-traded): the risk of loss resulting from adverse movements in market variables. Market variables include observable variables, such as interest rates, foreign exchange rates, equity prices, credit spreads and commodity (including precious metal) prices, and variables that may be unobservable or only indirectly observable, such as volatilities and correlations. Market risk includes issuer risk and investment risk: Issuer risk: the risk of loss from changes in fair value resulting from credit-related events affecting an issuer to which we are exposed through tradable securities or derivatives referencing the issuer Investment risk: issuer risk associated with positions held as financial investments p Audited \| Liquidity risk: the risk that the firm will not be able to efficiently meet both expected and unexpected current and forecast cash flows and collateral needs without affecting either daily operations or the financial condition of the firm. p Audited \| Funding risk : the risk that the firm will be unable, on an ongoing basis, to borrow funds in the market on an unsecured (or even secured) basis at an acceptable price to fund actual or proposed commitments; i.e., the risk that UBS's funding capacity is not sufficient to support the firm's current business and desired strategy. p Audited \| The Board of Directors ( the BoD ) approv es the risk management and control framework of the Group, including the Group and business divisio n overall risk appetite . The BoD is supported by its Risk Committee, which monitors and oversees the Group’s risk profile and the implementation of the risk framework approved by the BoD , and approves the Group’s risk appetite methodology. The Corporate Culture and Responsibility Committee helps the BoD meet its duty to safeguard and advance UBS ’s reputation for responsible and sustainable conduct , review ing stakeholder concerns and expectations pertaining to UBS’s societal contribution and corporate culture. The Audit Committee aids the BoD with its oversight duty relating to financial reporting and internal con trols over financial reporting, and the effectiveness of whistleblowing procedures and the external and internal audit functions. The Group Executive Board ( the GEB) has overall responsibility for establishing and implementing a risk management and control framework in the Group , manag ing the risk profile of the Group as a whole. The Group Chief Executive Officer has responsibility and accountability for the management and performance of the Group, has risk authority over transactions, positions and exposur es, and allocates business divisions and Group Functions risk limits approved by the BoD . The business division Presidents and Group f unction h eads are responsible for the operation and management of their business division s , including controlling the dedicated financial resources and risk appetite of the business division . The regional Presidents are responsible for cross - divisional collaboration in their region, and are mandate d to inform the GEB of any activities / issues that may give rise to actual or potentially material regulatory or reputational concerns. The Group Chief Risk Officer ( the Group CRO) is responsible for develop ing the Group ’ s risk management and control framework (including risk principles and risk appetite) for credit, market, country , treasury , model , and environmental and social risk s . This includes risk measurement and aggregation, portfolio controls and risk reporting. The Group CRO set s risk limits and approv es credit and market risk transactions and exposures. Risk C ontrol is als o the central function for model risk management and control for all models used in UBS . A framework of policies and authorities support t he risk control process . The b usiness division CROs are responsible for the implementation and enforcement of the risk management and control framework in the respective business division. The regional CROs provide independent oversight of risks in the respective region. The Group Chief Compliance and Governance Officer is responsible for develop ing the Group ’ s o perational r isk f ramework , which sets the general requirements for identification, management, assessment and mitigation of operational risk , and for ensuring that all non-financial risks are identified, owned and managed according to the operational risk appetite objectives , supported by an effective control framework. The Group Chief Financial Officer is responsible for transparency in assessing the financial performance of the Group and the b usiness d ivisions, and for managing the Group ’ s financial accounting, controlling , forecasting, planning and reporting. Additional responsibilities include managing UBS’s tax affairs, as well as treasury and capital management, including funding and liquidity risk and UBS’s regulatory capital ratios. The Group G eneral Counsel is responsible for managing the Group’ s legal affairs (including litigation involving UBS) and ensuring effective and timely assessment of legal matters impacting the Group or its businesses, and for the management and reporting of all litigation matters . The Group Chief Operating Officer is responsible for independent oversight and challenge of employment - related risks. Group Internal Audit (GIA) independently assesses effectiveness of processes to define strategy and risk appetite and overall adherence to the approved strategy . It also assesses the effectiveness of governance processes and risk management , including compliance with legal and regulatory requirements and internal governance documents . The Head GIA reports to the Chairman of the BoD . GIA also has a functional reporting line to the BoD Audit Committee. Some of the se roles and responsibilities are replicated for certain significant legal entities of the Group. The legal entity risk officers are responsible for independent ov ersight and control of financial and non-financial risks for certain significant legal entities of the Group as part of the legal entity control framework, which complements the G roup ’ s risk management and control framework.  Audited \| We apply a variety of methodologies and measurements to quantify the risks of our portfolios and potential risk concentrations. Risks that are not fully reflected within standard measures are subject to additional controls, which may include preapproval of s pecific transactions and the application of specific restrictions. Models to quantify risk are generally developed by dedicated units within control functions and are subject to independent validation.  ›
UBS AG
MDA Risk Management And Control [Line Items]
Disclosure Of Financial Risk Management Explanatory	Audited \| Credit risk: the risk of loss resulting from the failure of a client or counterparty to meet its contractual obligations toward UBS. This includes settlement risk, loan underwriting risk and step-in risk. Settlement risk: the risk of loss resulting from transactions that involve exchange of value (e.g., security versus cash) where we must deliver without first being able to determine with certainty that we will receive the countervalue. Loan underwriting risk: the risk of loss arising during the holding period of financing transactions that are intended for further distribution. Step-in risk: the risk that UBS may decide to provide financial support to an unconsolidated entity that is facing stress in the absence of, or in excess of, any contractual obligations to provide such support. p Audited \| Market risk (traded and non-traded): the risk of loss resulting from adverse movements in market variables. Market variables include observable variables, such as interest rates, foreign exchange rates, equity prices, credit spreads and commodity (including precious metal) prices, and variables that may be unobservable or only indirectly observable, such as volatilities and correlations. Market risk includes issuer risk and investment risk: Issuer risk: the risk of loss from changes in fair value resulting from credit-related events affecting an issuer to which we are exposed through tradable securities or derivatives referencing the issuer Investment risk: issuer risk associated with positions held as financial investments p Audited \| Liquidity risk: the risk that the firm will not be able to efficiently meet both expected and unexpected current and forecast cash flows and collateral needs without affecting either daily operations or the financial condition of the firm. p Audited \| Funding risk : the risk that the firm will be unable, on an ongoing basis, to borrow funds in the market on an unsecured (or even secured) basis at an acceptable price to fund actual or proposed commitments; i.e., the risk that UBS's funding capacity is not sufficient to support the firm's current business and desired strategy. p Audited \| The Board of Directors ( the BoD ) approv es the risk management and control framework of the Group, including the Group and business divisio n overall risk appetite . The BoD is supported by its Risk Committee, which monitors and oversees the Group’s risk profile and the implementation of the risk framework approved by the BoD , and approves the Group’s risk appetite methodology. The Corporate Culture and Responsibility Committee helps the BoD meet its duty to safeguard and advance UBS ’s reputation for responsible and sustainable conduct , review ing stakeholder concerns and expectations pertaining to UBS’s societal contribution and corporate culture. The Audit Committee aids the BoD with its oversight duty relating to financial reporting and internal con trols over financial reporting, and the effectiveness of whistleblowing procedures and the external and internal audit functions. The Group Executive Board ( the GEB) has overall responsibility for establishing and implementing a risk management and control framework in the Group , manag ing the risk profile of the Group as a whole. The Group Chief Executive Officer has responsibility and accountability for the management and performance of the Group, has risk authority over transactions, positions and exposur es, and allocates business divisions and Group Functions risk limits approved by the BoD . The business division Presidents and Group f unction h eads are responsible for the operation and management of their business division s , including controlling the dedicated financial resources and risk appetite of the business division . The regional Presidents are responsible for cross - divisional collaboration in their region, and are mandate d to inform the GEB of any activities / issues that may give rise to actual or potentially material regulatory or reputational concerns. The Group Chief Risk Officer ( the Group CRO) is responsible for develop ing the Group ’ s risk management and control framework (including risk principles and risk appetite) for credit, market, country , treasury , model , and environmental and social risk s . This includes risk measurement and aggregation, portfolio controls and risk reporting. The Group CRO set s risk limits and approv es credit and market risk transactions and exposures. Risk C ontrol is als o the central function for model risk management and control for all models used in UBS . A framework of policies and authorities support t he risk control process . The b usiness division CROs are responsible for the implementation and enforcement of the risk management and control framework in the respective business division. The regional CROs provide independent oversight of risks in the respective region. The Group Chief Compliance and Governance Officer is responsible for develop ing the Group ’ s o perational r isk f ramework , which sets the general requirements for identification, management, assessment and mitigation of operational risk , and for ensuring that all non-financial risks are identified, owned and managed according to the operational risk appetite objectives , supported by an effective control framework. The Group Chief Financial Officer is responsible for transparency in assessing the financial performance of the Group and the b usiness d ivisions, and for managing the Group ’ s financial accounting, controlling , forecasting, planning and reporting. Additional responsibilities include managing UBS’s tax affairs, as well as treasury and capital management, including funding and liquidity risk and UBS’s regulatory capital ratios. The Group G eneral Counsel is responsible for managing the Group’ s legal affairs (including litigation involving UBS) and ensuring effective and timely assessment of legal matters impacting the Group or its businesses, and for the management and reporting of all litigation matters . The Group Chief Operating Officer is responsible for independent oversight and challenge of employment - related risks. Group Internal Audit (GIA) independently assesses effectiveness of processes to define strategy and risk appetite and overall adherence to the approved strategy . It also assesses the effectiveness of governance processes and risk management , including compliance with legal and regulatory requirements and internal governance documents . The Head GIA reports to the Chairman of the BoD . GIA also has a functional reporting line to the BoD Audit Committee. Some of the se roles and responsibilities are replicated for certain significant legal entities of the Group. The legal entity risk officers are responsible for independent ov ersight and control of financial and non-financial risks for certain significant legal entities of the Group as part of the legal entity control framework, which complements the G roup ’ s risk management and control framework.  Audited \| We apply a variety of methodologies and measurements to quantify the risks of our portfolios and potential risk concentrations. Risks that are not fully reflected within standard measures are subject to additional controls, which may include preapproval of s pecific transactions and the application of specific restrictions. Models to quantify risk are generally developed by dedicated units within control functions and are subject to independent validation.  ›

MD&A - Risk management and co_2

MD&A - Risk management and control - Credit Risk	12 Months Ended
MD&A - Risk management and control - Credit Risk	Dec. 31, 2020
Disclosure MDA Risk Management And Control Credit Risk [Line Items]
Disclosure Of Credit Risk Explanatory	Audited \| Main sources of credit risk – Global Wealth Management predominant ly conduct s securities-based (Lombard) lending and mortgage lending. – A substantial portion of lending exposure arises from Personal & Corporate Banking , which offers mortgage loans , secured mainly by residential properties and income-producing real estate , as well as corporate loans, and therefore depends on the performance of the Swiss economy. – T he Investment Bank ’s credit exposure arises mainly from lending, derivatives trading and securities financing . Derivatives trading and securities financing are mainly investment grade. Loan underwriting activity can be lower rated and give rise to temporary concentrated exposure. – Credit risk within Non-core and Legacy Portfolio relates to derivative transactions, predominantly carried out on a cash-collateralized basis, and securitized positions.  Audited \| Overview of measurement, monitoring and ma n agement techniques – Credit risk from transactions with individual counterparties is based on our estimates of probability of default (PD) , exposure at default (EAD) and loss given default (LGD) . Limits are establi shed for individual counterparties and groups of related counterparties covering banking and traded products , and for settlement amounts. Risk authorities are approved by the BoD, and are delegated to the Group CEO , the Group CRO and divisional CROs, based on risk exposure amounts , internal credit rating and potential loss . – Limits apply not only to the current outstanding amount, but also to contingent commitments and the potential future exposure of traded products. – T he Investment Bank monitoring, measurem ent and limit framework distinguishes between exposures intended to be held to maturity (take-and-hold exposures) and those intended for distribution or risk transfer (temporary exposures). – We use models to derive portfolio credit risk measures of expected loss, statistical loss and stress loss at Group-wide and business division levels , and to establish portfolio limits. – Credit risk concentrations can arise if clients are engaged in similar activities, located in the same geographical region or have compar able economic characteristics , e.g. , if their ability to meet contractual obligations would be similarly affected by changes in economic, political or other conditions. To avoid credit risk concentrations, we establish limits / operational controls that co nstrain risk concentrations at portfolio and sub-portfolio levels with regard to sector exposure, country risk and specific product exposures.  Audited \| We have developed tools and models to estimate future credit losses that may be implicit in our current portfo lio. Exposures to individual counterparties are measured using three generally accepted parameters: PD , EAD and LGD . For a given credit facility, the product of these three parameters results in the expected loss. These parameters are the basis for the maj ority of our internal measures of credit risk, and key inputs for regulatory capital calculation under the advanced internal ratings-based (A-IRB) approach of the Basel III framework. We also use models to derive the portfolio credit risk measures of expec ted loss, statistical loss and stress loss.  Internal UBS rating scale and mapping of external ratings Internal UBS rating 1-year PD range in % Description Moody’s Investors Service mapping Standard & Poor’s mapping Fitch mapping 0 and 1 0.00–0.02 Investment grade Aaa AAA AAA 2 0.02–0.05 Aa1 to Aa3 AA+ to AA– AA+ to AA– 3 0.05–0.12 A1 to A3 A+ to A– A+ to A– 4 0.12–0.25 Baa1 to Baa2 BBB+ to BBB BBB+ to BBB 5 0.25–0.50 Baa3 BBB– BBB– 6 0.50–0.80 Sub-investment grade Ba1 BB+ BB+ 7 0.80–1.30 Ba2 BB BB 8 1.30–2.10 Ba3 BB– BB– 9 2.10–3.50 B1 B+ B+ 10 3.50–6.00 B2 B B 11 6.00–10.00 B3 B– B– 12 10.00–17.00 Caa 13 >17 Ca to C CCC to C CCC to C Counterparty is in default Default Defaulted D D
Credit risk mitigation	Counterparty credit risk arising from traded products, which include over-the-counter (OTC) derivatives, exchange-traded derivatives (ETD) exposures and securities financing transactions (SFTs), originating in the Investment Bank, Non-core and Legacy Portfolio and Group Treasury is generally managed on a close-out basis. This takes into account possible effects of market movements on the exposure and any associated collateral over the time it would take to close out our positions. In the Investment Bank, limits are applied to the potential future exposure per counterparty, with the limit size dependent on the creditworthiness (as determined by Risk Control) of the counterparty. Limit frameworks are also applied to control overall exposure to specific classes or categories of collateral on a portfolio level. Such portfolio limits are monitored and reported to senior management. Trading in OTC derivatives is conducted through central counterparties (CCPs) where practicable. Where CCPs are not used, we have clearly defined policies and processes for trading on a bilateral basis. Trading is typically conducted under bilateral International Swaps and Derivatives Association (ISDA) or similar master netting agreements, which generally allow for close-out and netting of transactions in case of default, subject to applicable law. For most major market participant counterparties, we use two-way collateral agreements under which either party can be required to provide collateral in the form of cash or marketable securities when the exposure exceeds specified levels. This collateral typically consists of well-rated government debt or other collateral permitted by applicable regulations. For certain counterparties, an initial margin is taken to cover some or all of the calculated close-out exposure. This is in addition to the variation margin taken to settle changes in market value of transactions. Regulations on margining uncleared OTC derivatives continue to evolve. These generally expand the scope of bilateral derivatives activity subject to margining. They will also result in greater amounts of initial margin received from, and posted to, certain bilateral trading counterparties than had been required in the past. These changes should result in lower close-out risk over time. We actively manage credit risk in our portfolios by taking collateral against exposures and by utilizing credit hedging. We use a scoring model as part of a standardized front-to-back process for credit decisions on the originating or modifying of Swiss mortgage loans. The model’s two key factors are an affordability calculation relative to gross income and the loan-to-value (LTV) ratio. The value we assign to each property is based on the lowest value determined from model-derived valuations, the purchase price and, in some cases, an additional external valuation. We similarly apply underwriting guidelines for our Global Wealth Management Region Americas mortgage loan portfolio, taking into account loan affordability and collateral sufficiency. LTV standards are defined for the various mortgage types, such as residential mortgages or investment properties, based on associated risk factors, such as property type, loan size, and purpose. The maximum LTV allowed within the standard approval process ranges from 45% to 80%. In addition to LTV, other credit risk metrics, such as debt-to-income ratios, credit scores and required client reserves, are also part of our underwriting guidelines. A risk limit framework is applied to the Global Wealth Management Region Americas mortgage loan portfolio. Limits are set to govern exposures within LTV categories, geographic concentrations, portfolio growth and high-risk mortgage segments, such as interest-only loans. These limits are monitored by a specialized credit risk monitoring team and reported to senior management. Supplementing this limit framework is a real estate lending policy and procedures framework, set up to govern real estate lending activities. Quality assurance and quality control programs monitor compliance with mortgage underwriting and documentation requirements. Lombard loans are secured by pledges of marketable securities, guarantees and other forms of collateral. Eligible financial securities are primarily liquid and actively traded transferable securities (such as bonds and equities), and other transferable securities, such as approved structured products for which regular prices are available and the issuer of the security provides a market. To a lesser degree, less liquid collateral is also used. We derive lending values by applying discounts (haircuts) to the pledged collateral’s market value. Haircuts for marketable securities are calculated to cover possible change in value over a given close-out period and confidence level. Less liquid or more volatile collateral will typically have larger haircuts. We assess concentration and correlation risks across collateral posted at a counterparty level, and at a divisional level across counterparties. We also perform targeted Group-wide reviews of concentration. Concentration of collateral in single securities, issuers or issuer groups, industry sectors, countries, regions or currencies may result in higher risk and reduced liquidity. In such cases, the lending value of the collateral, margin call and close-out levels are adjusted accordingly. We use single-name credit default swaps (CDSs), credit index CDSs, bespoke protection and other instruments to actively manage credit risk in the Investment Bank and Non-core and Legacy Portfolio. The aim is reducing concentrations of risk from specific counterparties, sectors or portfolios and, for counterparty credit risk, the profit or loss effect arising from changes in credit valuation adjustments (CVAs). We have strict guidelines with regard to taking credit hedges into account for credit risk mitigation purposes. For example, when monitoring exposures against counterparty limits, we do not usually apply certain credit risk mitigants, such as proxy hedges (credit protection on a correlated but different name) or credit index CDSs, to reduce counterparty exposures. Buying credit protection also creates credit exposure with regard to the protection provider. We monitor and limit exposures to credit protection providers, and also monitor the effectiveness of credit hedges as part of our overall credit exposures to the relevant counterparties. Trading with such counterparties is typically collateralized. For credit protection purchased to hedge the lending portfolio, this includes monitoring mismatches between the maturity of credit protection purchased and the maturity of the associated loan. Such mismatches result in basis risk and may reduce the effectiveness of the credit protection. Mismatches are routinely reported to credit officers and mitigating actions are taken when necessary.
Disclosure Of Financial Assets That Are Either Past Due Or Impaired Explanatory	Audited \| In line with the regulatory definition, we report a claim as non-performing when : (i) it is more than 90 days past due; (ii) it is subject to restructuring proceedings, where preferential conditions concerning interest rates, subordination, tenor , etc. have been granted in order to avoid default of the counterparty (forbearance); or (iii) the counterparty is subject to bankruptcy / enforced liquidation proceedings in any form, even if there is sufficient collateral to cover the due payment ; or (iv) there is other evidence that payment obligations will not be fully met without recourse to collateral. Default and credit-impaired UBS uses a single definition of default for classifying assets and determining the PD of its obligors for risk modeling purposes. The definition of default is based on quantitative and qualitative criteria. A counterparty is classified as defaulted when material paym ents of interest, principal or fees are overdue for more than 90 days, or more than 180 days for certain exposures in relation to loans to private and commercial clients in Personal & Corporate Banking and to private clients of Global Wealth Management Reg ion Switzerland. UBS does not consider the general 90-day presumption for default recognition appropriate for those portfolios , given the cure rates, which show that strict application of the 90-day criterion would not accurately reflect the inherent credi t risk. Counterparties are also classified as defaulted when : bankruptcy, insolvency proceedings or enforced liquidation have commenced; obligations have been restructured on preferential terms (forbearance); or there is other evidence that payment obligat ions will not be fully met without recourse to collateral. The latter may be the case even if, to date, all contractual payments have been made when due. If one claim against a counterparty is defaulted on , generally all claims against the counterparty are treated as defaulted. An instrument is classified as credit-impaired if the counterparty is classified as defaulted and / or the instrument is identified as purchased or originated credit-impaired (POCI). An instrument is POCI if it has been purchased at a deep discount to its carrying amount following a risk event of the issuer or originated with a defaulted counterparty. Once a financial asset is classified as defaulted / credit-impaired (except POCI), it is reported as a stage 3 instrument and remains a s such unless all past due amounts have been rectified, additional payments have been made on time, the position is not classified as credit-restructured, and there is general evidence of credit recovery. A three-month probation period is applied before a transfer back to stages 1 or 2 can be triggered. However, most instruments remain in stage 3 for a longer period . As of 31 December 2020, we have no instruments classified as POCI on our books.  Audited \| If payment default is imminent or default has already occurred, we may grant concessions to borrowers in financial difficulties that we would otherwise not consider in the normal c ourse of business, such as offering preferential interest rates, extending maturity, modifying the schedule of repayments, debt / equity swap, subordination, etc. When a forbearance measure takes place, each case is considered individually and the exposure is generally classified as default ed . Forbearance classification remain s until the loan is repaid or written off, non-preferential conditions are granted that supersede the preferential conditions or the counterparty has recovered and the preferential con ditions no longer exceed our risk tolerance . Contractual adjustments when there is no evidence of imminent payment default, or where changes to terms and conditions are within our usual risk tolerance , are not considered to be forborne. 
UBS AG
Disclosure MDA Risk Management And Control Credit Risk [Line Items]
Disclosure Of Credit Risk Explanatory	Audited \| Main sources of credit risk – Global Wealth Management predominant ly conduct s securities-based (Lombard) lending and mortgage lending. – A substantial portion of lending exposure arises from Personal & Corporate Banking , which offers mortgage loans , secured mainly by residential properties and income-producing real estate , as well as corporate loans, and therefore depends on the performance of the Swiss economy. – T he Investment Bank ’s credit exposure arises mainly from lending, derivatives trading and securities financing . Derivatives trading and securities financing are mainly investment grade. Loan underwriting activity can be lower rated and give rise to temporary concentrated exposure. – Credit risk within Non-core and Legacy Portfolio relates to derivative transactions, predominantly carried out on a cash-collateralized basis, and securitized positions.  Audited \| Overview of measurement, monitoring and ma n agement techniques – Credit risk from transactions with individual counterparties is based on our estimates of probability of default (PD) , exposure at default (EAD) and loss given default (LGD) . Limits are establi shed for individual counterparties and groups of related counterparties covering banking and traded products , and for settlement amounts. Risk authorities are approved by the BoD, and are delegated to the Group CEO , the Group CRO and divisional CROs, based on risk exposure amounts , internal credit rating and potential loss . – Limits apply not only to the current outstanding amount, but also to contingent commitments and the potential future exposure of traded products. – T he Investment Bank monitoring, measurem ent and limit framework distinguishes between exposures intended to be held to maturity (take-and-hold exposures) and those intended for distribution or risk transfer (temporary exposures). – We use models to derive portfolio credit risk measures of expected loss, statistical loss and stress loss at Group-wide and business division levels , and to establish portfolio limits. – Credit risk concentrations can arise if clients are engaged in similar activities, located in the same geographical region or have compar able economic characteristics , e.g. , if their ability to meet contractual obligations would be similarly affected by changes in economic, political or other conditions. To avoid credit risk concentrations, we establish limits / operational controls that co nstrain risk concentrations at portfolio and sub-portfolio levels with regard to sector exposure, country risk and specific product exposures.  Audited \| We have developed tools and models to estimate future credit losses that may be implicit in our current portfo lio. Exposures to individual counterparties are measured using three generally accepted parameters: PD , EAD and LGD . For a given credit facility, the product of these three parameters results in the expected loss. These parameters are the basis for the maj ority of our internal measures of credit risk, and key inputs for regulatory capital calculation under the advanced internal ratings-based (A-IRB) approach of the Basel III framework. We also use models to derive the portfolio credit risk measures of expec ted loss, statistical loss and stress loss.  Internal UBS rating scale and mapping of external ratings Internal UBS rating 1-year PD range in % Description Moody’s Investors Service mapping Standard & Poor’s mapping Fitch mapping 0 and 1 0.00–0.02 Investment grade Aaa AAA AAA 2 0.02–0.05 Aa1 to Aa3 AA+ to AA– AA+ to AA– 3 0.05–0.12 A1 to A3 A+ to A– A+ to A– 4 0.12–0.25 Baa1 to Baa2 BBB+ to BBB BBB+ to BBB 5 0.25–0.50 Baa3 BBB– BBB– 6 0.50–0.80 Sub-investment grade Ba1 BB+ BB+ 7 0.80–1.30 Ba2 BB BB 8 1.30–2.10 Ba3 BB– BB– 9 2.10–3.50 B1 B+ B+ 10 3.50–6.00 B2 B B 11 6.00–10.00 B3 B– B– 12 10.00–17.00 Caa 13 >17 Ca to C CCC to C CCC to C Counterparty is in default Default Defaulted D D
Credit risk mitigation	Counterparty credit risk arising from traded products, which include over-the-counter (OTC) derivatives, exchange-traded derivatives (ETD) exposures and securities financing transactions (SFTs), originating in the Investment Bank, Non-core and Legacy Portfolio and Group Treasury is generally managed on a close-out basis. This takes into account possible effects of market movements on the exposure and any associated collateral over the time it would take to close out our positions. In the Investment Bank, limits are applied to the potential future exposure per counterparty, with the limit size dependent on the creditworthiness (as determined by Risk Control) of the counterparty. Limit frameworks are also applied to control overall exposure to specific classes or categories of collateral on a portfolio level. Such portfolio limits are monitored and reported to senior management. Trading in OTC derivatives is conducted through central counterparties (CCPs) where practicable. Where CCPs are not used, we have clearly defined policies and processes for trading on a bilateral basis. Trading is typically conducted under bilateral International Swaps and Derivatives Association (ISDA) or similar master netting agreements, which generally allow for close-out and netting of transactions in case of default, subject to applicable law. For most major market participant counterparties, we use two-way collateral agreements under which either party can be required to provide collateral in the form of cash or marketable securities when the exposure exceeds specified levels. This collateral typically consists of well-rated government debt or other collateral permitted by applicable regulations. For certain counterparties, an initial margin is taken to cover some or all of the calculated close-out exposure. This is in addition to the variation margin taken to settle changes in market value of transactions. Regulations on margining uncleared OTC derivatives continue to evolve. These generally expand the scope of bilateral derivatives activity subject to margining. They will also result in greater amounts of initial margin received from, and posted to, certain bilateral trading counterparties than had been required in the past. These changes should result in lower close-out risk over time. We actively manage credit risk in our portfolios by taking collateral against exposures and by utilizing credit hedging. We use a scoring model as part of a standardized front-to-back process for credit decisions on the originating or modifying of Swiss mortgage loans. The model’s two key factors are an affordability calculation relative to gross income and the loan-to-value (LTV) ratio. The value we assign to each property is based on the lowest value determined from model-derived valuations, the purchase price and, in some cases, an additional external valuation. We similarly apply underwriting guidelines for our Global Wealth Management Region Americas mortgage loan portfolio, taking into account loan affordability and collateral sufficiency. LTV standards are defined for the various mortgage types, such as residential mortgages or investment properties, based on associated risk factors, such as property type, loan size, and purpose. The maximum LTV allowed within the standard approval process ranges from 45% to 80%. In addition to LTV, other credit risk metrics, such as debt-to-income ratios, credit scores and required client reserves, are also part of our underwriting guidelines. A risk limit framework is applied to the Global Wealth Management Region Americas mortgage loan portfolio. Limits are set to govern exposures within LTV categories, geographic concentrations, portfolio growth and high-risk mortgage segments, such as interest-only loans. These limits are monitored by a specialized credit risk monitoring team and reported to senior management. Supplementing this limit framework is a real estate lending policy and procedures framework, set up to govern real estate lending activities. Quality assurance and quality control programs monitor compliance with mortgage underwriting and documentation requirements. Lombard loans are secured by pledges of marketable securities, guarantees and other forms of collateral. Eligible financial securities are primarily liquid and actively traded transferable securities (such as bonds and equities), and other transferable securities, such as approved structured products for which regular prices are available and the issuer of the security provides a market. To a lesser degree, less liquid collateral is also used. We derive lending values by applying discounts (haircuts) to the pledged collateral’s market value. Haircuts for marketable securities are calculated to cover possible change in value over a given close-out period and confidence level. Less liquid or more volatile collateral will typically have larger haircuts. We assess concentration and correlation risks across collateral posted at a counterparty level, and at a divisional level across counterparties. We also perform targeted Group-wide reviews of concentration. Concentration of collateral in single securities, issuers or issuer groups, industry sectors, countries, regions or currencies may result in higher risk and reduced liquidity. In such cases, the lending value of the collateral, margin call and close-out levels are adjusted accordingly. We use single-name credit default swaps (CDSs), credit index CDSs, bespoke protection and other instruments to actively manage credit risk in the Investment Bank and Non-core and Legacy Portfolio. The aim is reducing concentrations of risk from specific counterparties, sectors or portfolios and, for counterparty credit risk, the profit or loss effect arising from changes in credit valuation adjustments (CVAs). We have strict guidelines with regard to taking credit hedges into account for credit risk mitigation purposes. For example, when monitoring exposures against counterparty limits, we do not usually apply certain credit risk mitigants, such as proxy hedges (credit protection on a correlated but different name) or credit index CDSs, to reduce counterparty exposures. Buying credit protection also creates credit exposure with regard to the protection provider. We monitor and limit exposures to credit protection providers, and also monitor the effectiveness of credit hedges as part of our overall credit exposures to the relevant counterparties. Trading with such counterparties is typically collateralized. For credit protection purchased to hedge the lending portfolio, this includes monitoring mismatches between the maturity of credit protection purchased and the maturity of the associated loan. Such mismatches result in basis risk and may reduce the effectiveness of the credit protection. Mismatches are routinely reported to credit officers and mitigating actions are taken when necessary.
Disclosure Of Financial Assets That Are Either Past Due Or Impaired Explanatory	Audited \| In line with the regulatory definition, we report a claim as non-performing when : (i) it is more than 90 days past due; (ii) it is subject to restructuring proceedings, where preferential conditions concerning interest rates, subordination, tenor , etc. have been granted in order to avoid default of the counterparty (forbearance); or (iii) the counterparty is subject to bankruptcy / enforced liquidation proceedings in any form, even if there is sufficient collateral to cover the due payment ; or (iv) there is other evidence that payment obligations will not be fully met without recourse to collateral. Default and credit-impaired UBS uses a single definition of default for classifying assets and determining the PD of its obligors for risk modeling purposes. The definition of default is based on quantitative and qualitative criteria. A counterparty is classified as defaulted when material paym ents of interest, principal or fees are overdue for more than 90 days, or more than 180 days for certain exposures in relation to loans to private and commercial clients in Personal & Corporate Banking and to private clients of Global Wealth Management Reg ion Switzerland. UBS does not consider the general 90-day presumption for default recognition appropriate for those portfolios , given the cure rates, which show that strict application of the 90-day criterion would not accurately reflect the inherent credi t risk. Counterparties are also classified as defaulted when : bankruptcy, insolvency proceedings or enforced liquidation have commenced; obligations have been restructured on preferential terms (forbearance); or there is other evidence that payment obligat ions will not be fully met without recourse to collateral. The latter may be the case even if, to date, all contractual payments have been made when due. If one claim against a counterparty is defaulted on , generally all claims against the counterparty are treated as defaulted. An instrument is classified as credit-impaired if the counterparty is classified as defaulted and / or the instrument is identified as purchased or originated credit-impaired (POCI). An instrument is POCI if it has been purchased at a deep discount to its carrying amount following a risk event of the issuer or originated with a defaulted counterparty. Once a financial asset is classified as defaulted / credit-impaired (except POCI), it is reported as a stage 3 instrument and remains a s such unless all past due amounts have been rectified, additional payments have been made on time, the position is not classified as credit-restructured, and there is general evidence of credit recovery. A three-month probation period is applied before a transfer back to stages 1 or 2 can be triggered. However, most instruments remain in stage 3 for a longer period . As of 31 December 2020, we have no instruments classified as POCI on our books.  Audited \| If payment default is imminent or default has already occurred, we may grant concessions to borrowers in financial difficulties that we would otherwise not consider in the normal c ourse of business, such as offering preferential interest rates, extending maturity, modifying the schedule of repayments, debt / equity swap, subordination, etc. When a forbearance measure takes place, each case is considered individually and the exposure is generally classified as default ed . Forbearance classification remain s until the loan is repaid or written off, non-preferential conditions are granted that supersede the preferential conditions or the counterparty has recovered and the preferential con ditions no longer exceed our risk tolerance . Contractual adjustments when there is no evidence of imminent payment default, or where changes to terms and conditions are within our usual risk tolerance , are not considered to be forborne. 

MD&A - Risk management and co_3

MD&A - Risk management and control - Market Risk	12 Months Ended
MD&A - Risk management and control - Market Risk	Dec. 31, 2020
MDA Risk Management And Control Market Risk [Line Items]
Disclosure Of Market Risk Explanatory	Audited \| Main sources of market risk Market risks arise from both trading and non-trading business activities. – Trading market risks are mainly connect ed with primary debt and equity underwriting and securities and derivatives trading for market-making and client facilitation in our Investment Bank, as well as the remaining positions in Non-core and Legacy Portfolio in Group Functions and our municipal securities trading business in Global Wealth Management. – Non-trading market risk s arise predominantly in the form of interest rate and foreign exchange risks connect ed with personal banking and lending in our wealth management businesses, our Swiss p ersonal and c orporate b anking business and the Investment Bank’s lending business, as well as treasury activities. – Group Treasury assumes market risks in the process of managing interest rate risk, structural foreign exchange risk and the Group ’s liquidity and funding profile , including HQLA . – Equity and debt investments can also give rise to market risks, as can some aspects of employee benefits, such as defined benefit pension schemes.  Audited \| Overview of measurement, monitoring and management techniques – Market risk limits are set for the Group, the business divisions , Group Treasury and Non- c ore and Legacy Portfolio at granular levels in the various business lines, reflecting the nature and m agnitude of the market risks. – Management VaR measures exposures under the market risk framework , includ ing trading market risks and some non-trading market risks. Non-trading market risks not included in VaR are also covered in the risks controlled by Market & Treasury Risk Control , as set out below. – Our primary portfolio measures of market risk are liquidity-adjusted stress (LAS) loss and VaR. Both are common to all business divisions and subject to limits that are approved by the Board of Directors ( the BoD). – These measures are complemented by concentration and granular limits for general and specific market risk factors. Our trading busi nesses are subject to multiple market risk limits , which take into account the extent of market liquidity and volatility, available operational capacity, valuation uncertainty and, for our single-name exposures, issuer credit quality. – Trading market risks are managed on an integrated basis at portfolio level. As risk factor sensitivities change due to new transactions, transaction expiries or changes in market levels, risk factors are dynamically rehedged to remain within limits. Thus we do not generally se ek to distinguish in the trading portfolio between specific positions and associated hedges. – Issuer risk is controlled by limits applied at business division level based on jump-to-zero measures, which estimate maximum default exposure (the default event l oss assuming zero recovery). – Non-trading foreign exchange risks are managed under market risk limits, with the exception of Group Treasury management of consolidated capital activity. Our Market & Treasury Risk Control function applies a holistic risk fr amework, set ting the appetite for treasury-related risk-taking activities across the Group. A key element of the framework is an overarching economic value sensitivity limit, set by the BoD. Th at limit is linked to the level of Basel III common equity tier 1 (CET1) capital , and takes into account risks arising from interest rates, foreign exchange and credit spreads. Also , the sensitivity of net interest income to changes in interest rates is monitored against targets set by the Group CEO , so as to analyze the outlook and volatility of net interest income based on market-expected interest rates. Limits are also set by the BoD to balance the effect of foreign exchange movements on our CET1 capital and CET1 capital ratio. Non-trading interest rate and foreign exchange risks are included in Group -wide statistical and stress testing metrics, which flow into our risk appetite framework. Equity and debt investments are subject to a range of risk controls, including preapproval of new investments by business managem ent and Risk Control and regular monitoring and reporting. They are also included in Group -wide statistical and stress testing metrics .  › Audited \| IRRBB arises from balance sheet positions such as Loans and advances to banks , Loans and advances to customers , Financial assets at fair value not held for trading , Financial assets measured at amortized cost , Customer deposits , Debt issued measured at amortized cost , and derivatives, including those used for cash flow hedging purposes. Fair value changes to these positions may affect other comprehensive income (OCI) or the income statement, depending on their accounting treatment. Our la rgest banking book interest rate exposures arise from customer deposits and lending products in Global Wealth Management and Personal & Corporate Banking. The inherent interest rate risks are generally transferred from Global Wealth Management and Personal & Corporate Banking to Group Treasury, to manage them centrally. This enables the netting of interest rate risks across different sources, while leaving the originating businesses with commercial margin and volume management. The residual interest rate ri sk is mainly hedged with interest rate swaps, to the vast majority of which we apply hedge accounting. Short-term exposures and high-quality liquid assets classified as Financial assets at fair value not held for trading are hedged with derivatives account ed for on a mark-to-market basis. Long-term fixed-rate debt issued is hedged with interest rate swaps designated in fair value hedge accounting relationships. Risk management and governance IRRBB is measured using several metrics, the most relevant of whic h are the following . – Interest rate sensitivities to changes in yield curves, calculated as changes in the present value of future cash flows irrespective of accounting treatment. These are also the key risk factors for statistical and stress-based measures, e.g., value-at-risk and stress scenarios (including EVE sensitivity) , and are measured and reported daily. EVE sensitivity is the exposure arising from the most adverse regulatory interest rate scenario after netting across currencies. As well as the regulatory measure, we appl y an internal EVE sensitivity metric that includes equity, goodwill, real estate and additional tier 1 (AT1) capital instruments. – Net interest income (NII) sensitivity assesses NII change over a set time horizon compared with baseli ne NII, which we internally calculate by assuming interest rates in all currencies develop according to their market-implied forward rates and assum ing constant business volumes and no specific management actions. I nternal NII sensitivity, which includes the contribution from cash held at central bank s , unlike the Pillar 3 disclosure requirements, is measured and reported monthly. We actively manage IRRBB, aiming to reduc e the volatility of NII, while keeping the EVE sensitivity within set internal risk limits. EVE and NII sensitivity are monitored against limits and triggers, at consolidated and significant legal entity levels. We also assess the sensitivity of EVE and NII under stressed market conditions by applying a suite of parallel and non-parallel interest rate scenarios, as well as specific economic scenarios. The Interest Rate Risk in the Banking Book Strategy Committee, a sub-committee of the Group Asset and Liabil ity Committee (ALCO), and, where relevant, ALCOs at a legal entity level perform independent oversight over the management of IRRBB. IRRBB is also subject to G roup I nternal A udit and model governance. › Refer to “Group Internal Audit” in the “Corporate gover nance” section of this report and to “Risk measurement” in this section for more information Key modeling assumptions The cash flows from customer deposits and lending products used in calculation of EVE sensitivity exclude commercial margins and other spr ead components, are aggregated by daily time-buckets and are discounted using risk-free rates. Our external issuances are discounted using UBS’s senior debt curve, and capital instruments are modeled to the first call date. NII sensitivity, which includes commercial margins, is calculated over a one-year time horizon, assuming constant balance sheet structure and volumes, and considers the flooring effect of embedded interest rate options . The average repricing maturity of non-maturing deposits and loans is determined via replication portfolio strategies designed to protect product margin. Optimal replicating portfolios are determined at granular currency- and product-specific level s by simulating and applying a real-world market rate model to historically c alibrated client rate and volume models. We use an econometric prepayment model to forecast prepayment rates on US mortgage loans in UBS Bank USA and agency mortgage-backed securities (MBSs) held in various liquidity portfolios of UBS Americas Holding LLC consolidated. These prepayment rates are used to forecast both mortgage loan and MBS balances under various macroeconomic scenarios. The prepayment model is used for a variety of purposes, including risk management and regulatory stress testing. Swiss m ort gages and fixed-term deposits generally do not carry similar optionality, due to prepayment and early redemption penalties. 
Value-at-risk	Actual realized market risk losses may differ from those implied by VaR for a variety of reasons. VaR is calibrated to a specified level of confidence and may not indicate potential losses beyond this confidence level. The 1-day time horizon used for VaR for internal management purposes (10-day for regulatory VaR) may not fully capture market risk of positions that cannot be closed out or hedged within the specified period. In some cases, VaR calculations approximate the effect of changes in risk factors on the values of positions and portfolios. This may happen due to the number of risk factors included in the VaR model needing to be limited. Effects of extreme market movements are subject to estimation errors, which may result from non-linear risk sensitivities, and the potential for actual volatility and correlation levels to differ from assumptions implicit in VaR calculations. Using a five-year window means sudden increases in market volatility will tend not to increase VaR as quickly as the use of shorter historical observation periods, but such increases will affect VaR for a longer period of time. Similarly, after periods of increased volatility, as markets stabilize VaR predictions will remain more conservative for a period of time influenced by the length of the historical observation period. SVaR is subject to the limitations noted for VaR above, but the use of one-year data sets avoids the smoothing effect of the five-year data set used for VaR, and the absence of the five-year window gives a longer history of potential loss events. Therefore, although the significant period of stress during the 2007–2009 financial crisis is no longer contained in the historical five-year period used for management and regulatory VaR, SVaR continues to use that data. This approach aims to reduce the procyclicality of the regulatory capital requirements for market risks. We recognize that no single measure can encompass all risks associated with a position or portfolio. Thus, we use a set of metrics with both overlapping and complementary characteristics to create a holistic framework that aims to ensure material completeness of risk identification and measurement. As a statistical aggregate risk measure, VaR supplements our liquidity-adjusted stress and comprehensive stress testing frameworks. We also have a framework to identify and quantify potential risks not fully captured by our VaR model and refer to such risks as risks not in VaR. The framework underpins these potential risks with regulatory capital, calculated as a multiple of regulatory VaR and stressed VaR.
Sensitivity Analysis For Each Type Of Market Risk	Management value-at-risk (1-day, 95% confidence, 5 years of historical data) of our business divisions and Group Functions by general market risk type 1 For the year ended 31.12.20 USD million Equity Interest rates Credit spreads Foreign exchange Commodities Min. 3 6 5 2 2 Max. 29 11 11 7 6 Average 10 8 7 4 4 31.12.20 6 8 8 3 3 Total management VaR, Group 8 31 13 11 Average (per business division and risk type) Global Wealth Management 0 2 1 1 0 1 1 0 0 Personal & Corporate Banking 0 0 0 0 0 0 0 0 0 Asset Management 0 0 0 0 0 0 0 0 0 Investment Bank 7 32 12 10 10 7 6 4 4 Group Functions 4 7 5 6 0 4 3 1 0 Diversification effect 2,3 (5) (8) 0 (4) (4) (1) 0 For the year ended 31.12.19 USD million Equity Interest rates Credit spreads Foreign exchange Commodities Min. 2 6 3 2 1 Max. 14 12 8 8 6 Average 6 9 5 3 2 31.12.19 5 8 5 3 3 Total management VaR, Group 6 18 11 9 Average (per business division and risk type) Global Wealth Management 0 1 1 1 0 1 1 0 0 Personal & Corporate Banking 0 0 0 0 0 0 0 0 0 Asset Management 0 0 0 0 0 0 0 0 0 Investment Bank 4 17 9 7 6 7 4 3 2 Group Functions 4 8 5 5 1 5 2 1 0 Diversification effect 2,3 (5) (4) (1) (4) (2) (1) 0 1 Statistics at individual levels may not be summed to deduce the corresponding aggregate figures. The minima and maxima for each level may well occur on different days, and likewise, the VaR for each business line or risk type, being driven by the extreme loss tail of the corresponding distribution of simulated profits and losses for that business line or risk type, may well be driven by different days in the historical time series, rendering invalid the simple summation of figures to arrive at the aggregate total. 2 Difference between the sum of the standalone VaR for the business divisions and Group Functions and the VaR for the Group as a whole. 3 As the minima and maxima for different business divisions and Group Functions occur on different days, it is not meaningful to calculate a portfolio diversification effect. Audited \| Interest rate risk in the banking book is subject to a regulatory EVE sensitivity threshold of 15% of tier 1 capital. The exposure is calculated as the theoretical change in the present value of the banking book under the most adverse of the six FINMA interest rate scenarios. As of 31 De ce mber 202 0, the interest rate sensitivity of our banking book to a +1-basis-point parallel shift in yield curves was negative USD 27 . 2 million. The reported interest rate sensitivity excludes the additional tier 1 (AT1) capital instruments as per FINMA Pillar 3 di sclosure requirements, with a sensitivity of USD 4.2 million per basis point, and our equity, goodwill and real estate, with a modeled sensitivity of USD 22.2 million per basis point, of which USD 5.6 million and USD 15.9 million are attributable to the Sw iss franc and the US dollar portfolios, respectively. The most adverse of the six FINMA interest rate scenarios would be the “Parallel up” scenario, which would result in a change in the economic value of equity of negative USD 5.6 billion, representing a pro forma reduction of 10.0% of tier 1 capital, which would be well below the regulatory outlier test of 15% of tier 1 capital. The immediate effect of the “Parallel up” scenario on tier 1 capital as of 31 December 2020 would be a reduction of 1.2%, or USD 0.7 billion, arising from the part of our banking book that is measured at fair value through profit or loss and from the financial assets measured at fair value through OCI. This scenario would, however, have a positive effect on net interest income.  Interest rate risk – banking book USD million +1 bp Parallel up 1 Parallel down 1 Steepener 2 Flattener 3 Short-term up 4 Short-term down 5 CHF (5.2) (735.8) 832.3 (369.6) 225.5 (74.5) 79.0 EUR (0.9) (164.9) 163.2 (73.1) 29.9 (20.4) (4.7) GBP 0.2 48.7 (42.0) (31.7) 40.2 56.9 (47.5) USD (20.7) (4,612.8) 3,999.8 (395.5) (630.5) (2,188.9) 2,397.9 Other (0.6) (140.0) 3.6 20.8 (59.3) (105.7) 10.5 Total effect on economic value of equity as per Pillar 3 requirement as of 31.12.20 (27.2) (5,604.8) 4,956.9 (849.1) (394.1) (2,332.7) 2,435.2 Additional tier 1 (AT1) capital instruments 4.2 815.1 (868.4) (92.8) 272.8 573.6 (599.0) Total including AT1 capital instruments as of 31.12.20 (23.0) (4,789.7) 4,088.5 (942.0) (121.2) (1,759.1) 1,836.2 1 Rates across all tenors move by ±150 bps for Swiss franc, ±200 bps for euro and US dollar and ±250 bps for pound sterling. 2 Short-term rates decrease and long-term rates increase. 3 Short-term rates increase and long-term rates decrease. 4 Short-term rates increase more than long-term rates. 5 Short-term rates decrease more than long-term rates. Audited \| Under International Financial Reporting Standards (IFRS) effective on 31 December 20 20 , equity i nvestments not in the trading book may be classified as Financial assets at fair value not held for trading or Investments in associates . The fair value of equity investmen ts tends to be influenced by factors specific to the individual investments. Equity investments are generally intended to be held for the medium or long term and may be subject to lock-up agreements. For these reasons, we generally do not control these exp osures by using market risk measures applied to trading activities. However, such equity investments are subject to a different range of controls, including preapproval of new investments by business management and Risk Control, portfolio and concentration limits, and regular monitoring and reporting to senior management. They are also included in our Group-wide statistical and stress testing metrics, which flow into our risk appetite framework. As of 31 December 2020 , w e held equity investments totaling USD 3. 1 billion, of which USD 1.5 billion was classified as Financial assets at fair value not held for trading and USD 1. 6 billion as Investments in associates .  Audited \| Debt investments classified as Financial assets measured at fair value through OCI as of 31 December 20 20 were measured at fair value with changes in fair value recorded through Equity , and can broadly be categorized as money market instruments and debt securities primarily held for statutory, regulatory or liquidity reasons. The risk control framework applied to debt instruments classified as Financ ial assets measured at fair value through OCI depends on the nature of the instruments and the purpose for which we hold them. Our exposures may be included in market risk limits or be subject to specific monitoring and interest rate sensitivity analysis. They are also included in our Group-wide statistical and stress testing metrics, which flow into our risk appetite framework. Debt instruments classified as Financial assets measured at fair value through OCI had a fair value of USD 8.3 billion as of 31 December 2020 compared with USD 6.3 billion as of 31 December 2019. 
UBS AG
MDA Risk Management And Control Market Risk [Line Items]
Disclosure Of Market Risk Explanatory	Audited \| Main sources of market risk Market risks arise from both trading and non-trading business activities. – Trading market risks are mainly connect ed with primary debt and equity underwriting and securities and derivatives trading for market-making and client facilitation in our Investment Bank, as well as the remaining positions in Non-core and Legacy Portfolio in Group Functions and our municipal securities trading business in Global Wealth Management. – Non-trading market risk s arise predominantly in the form of interest rate and foreign exchange risks connect ed with personal banking and lending in our wealth management businesses, our Swiss p ersonal and c orporate b anking business and the Investment Bank’s lending business, as well as treasury activities. – Group Treasury assumes market risks in the process of managing interest rate risk, structural foreign exchange risk and the Group ’s liquidity and funding profile , including HQLA . – Equity and debt investments can also give rise to market risks, as can some aspects of employee benefits, such as defined benefit pension schemes.  Audited \| Overview of measurement, monitoring and management techniques – Market risk limits are set for the Group, the business divisions , Group Treasury and Non- c ore and Legacy Portfolio at granular levels in the various business lines, reflecting the nature and m agnitude of the market risks. – Management VaR measures exposures under the market risk framework , includ ing trading market risks and some non-trading market risks. Non-trading market risks not included in VaR are also covered in the risks controlled by Market & Treasury Risk Control , as set out below. – Our primary portfolio measures of market risk are liquidity-adjusted stress (LAS) loss and VaR. Both are common to all business divisions and subject to limits that are approved by the Board of Directors ( the BoD). – These measures are complemented by concentration and granular limits for general and specific market risk factors. Our trading busi nesses are subject to multiple market risk limits , which take into account the extent of market liquidity and volatility, available operational capacity, valuation uncertainty and, for our single-name exposures, issuer credit quality. – Trading market risks are managed on an integrated basis at portfolio level. As risk factor sensitivities change due to new transactions, transaction expiries or changes in market levels, risk factors are dynamically rehedged to remain within limits. Thus we do not generally se ek to distinguish in the trading portfolio between specific positions and associated hedges. – Issuer risk is controlled by limits applied at business division level based on jump-to-zero measures, which estimate maximum default exposure (the default event l oss assuming zero recovery). – Non-trading foreign exchange risks are managed under market risk limits, with the exception of Group Treasury management of consolidated capital activity. Our Market & Treasury Risk Control function applies a holistic risk fr amework, set ting the appetite for treasury-related risk-taking activities across the Group. A key element of the framework is an overarching economic value sensitivity limit, set by the BoD. Th at limit is linked to the level of Basel III common equity tier 1 (CET1) capital , and takes into account risks arising from interest rates, foreign exchange and credit spreads. Also , the sensitivity of net interest income to changes in interest rates is monitored against targets set by the Group CEO , so as to analyze the outlook and volatility of net interest income based on market-expected interest rates. Limits are also set by the BoD to balance the effect of foreign exchange movements on our CET1 capital and CET1 capital ratio. Non-trading interest rate and foreign exchange risks are included in Group -wide statistical and stress testing metrics, which flow into our risk appetite framework. Equity and debt investments are subject to a range of risk controls, including preapproval of new investments by business managem ent and Risk Control and regular monitoring and reporting. They are also included in Group -wide statistical and stress testing metrics .  › Audited \| IRRBB arises from balance sheet positions such as Loans and advances to banks , Loans and advances to customers , Financial assets at fair value not held for trading , Financial assets measured at amortized cost , Customer deposits , Debt issued measured at amortized cost , and derivatives, including those used for cash flow hedging purposes. Fair value changes to these positions may affect other comprehensive income (OCI) or the income statement, depending on their accounting treatment. Our la rgest banking book interest rate exposures arise from customer deposits and lending products in Global Wealth Management and Personal & Corporate Banking. The inherent interest rate risks are generally transferred from Global Wealth Management and Personal & Corporate Banking to Group Treasury, to manage them centrally. This enables the netting of interest rate risks across different sources, while leaving the originating businesses with commercial margin and volume management. The residual interest rate ri sk is mainly hedged with interest rate swaps, to the vast majority of which we apply hedge accounting. Short-term exposures and high-quality liquid assets classified as Financial assets at fair value not held for trading are hedged with derivatives account ed for on a mark-to-market basis. Long-term fixed-rate debt issued is hedged with interest rate swaps designated in fair value hedge accounting relationships. Risk management and governance IRRBB is measured using several metrics, the most relevant of whic h are the following . – Interest rate sensitivities to changes in yield curves, calculated as changes in the present value of future cash flows irrespective of accounting treatment. These are also the key risk factors for statistical and stress-based measures, e.g., value-at-risk and stress scenarios (including EVE sensitivity) , and are measured and reported daily. EVE sensitivity is the exposure arising from the most adverse regulatory interest rate scenario after netting across currencies. As well as the regulatory measure, we appl y an internal EVE sensitivity metric that includes equity, goodwill, real estate and additional tier 1 (AT1) capital instruments. – Net interest income (NII) sensitivity assesses NII change over a set time horizon compared with baseli ne NII, which we internally calculate by assuming interest rates in all currencies develop according to their market-implied forward rates and assum ing constant business volumes and no specific management actions. I nternal NII sensitivity, which includes the contribution from cash held at central bank s , unlike the Pillar 3 disclosure requirements, is measured and reported monthly. We actively manage IRRBB, aiming to reduc e the volatility of NII, while keeping the EVE sensitivity within set internal risk limits. EVE and NII sensitivity are monitored against limits and triggers, at consolidated and significant legal entity levels. We also assess the sensitivity of EVE and NII under stressed market conditions by applying a suite of parallel and non-parallel interest rate scenarios, as well as specific economic scenarios. The Interest Rate Risk in the Banking Book Strategy Committee, a sub-committee of the Group Asset and Liabil ity Committee (ALCO), and, where relevant, ALCOs at a legal entity level perform independent oversight over the management of IRRBB. IRRBB is also subject to G roup I nternal A udit and model governance. › Refer to “Group Internal Audit” in the “Corporate gover nance” section of this report and to “Risk measurement” in this section for more information Key modeling assumptions The cash flows from customer deposits and lending products used in calculation of EVE sensitivity exclude commercial margins and other spr ead components, are aggregated by daily time-buckets and are discounted using risk-free rates. Our external issuances are discounted using UBS’s senior debt curve, and capital instruments are modeled to the first call date. NII sensitivity, which includes commercial margins, is calculated over a one-year time horizon, assuming constant balance sheet structure and volumes, and considers the flooring effect of embedded interest rate options . The average repricing maturity of non-maturing deposits and loans is determined via replication portfolio strategies designed to protect product margin. Optimal replicating portfolios are determined at granular currency- and product-specific level s by simulating and applying a real-world market rate model to historically c alibrated client rate and volume models. We use an econometric prepayment model to forecast prepayment rates on US mortgage loans in UBS Bank USA and agency mortgage-backed securities (MBSs) held in various liquidity portfolios of UBS Americas Holding LLC consolidated. These prepayment rates are used to forecast both mortgage loan and MBS balances under various macroeconomic scenarios. The prepayment model is used for a variety of purposes, including risk management and regulatory stress testing. Swiss m ort gages and fixed-term deposits generally do not carry similar optionality, due to prepayment and early redemption penalties. 
Value-at-risk	Actual realized market risk losses may differ from those implied by VaR for a variety of reasons. VaR is calibrated to a specified level of confidence and may not indicate potential losses beyond this confidence level. The 1-day time horizon used for VaR for internal management purposes (10-day for regulatory VaR) may not fully capture market risk of positions that cannot be closed out or hedged within the specified period. In some cases, VaR calculations approximate the effect of changes in risk factors on the values of positions and portfolios. This may happen due to the number of risk factors included in the VaR model needing to be limited. Effects of extreme market movements are subject to estimation errors, which may result from non-linear risk sensitivities, and the potential for actual volatility and correlation levels to differ from assumptions implicit in VaR calculations. Using a five-year window means sudden increases in market volatility will tend not to increase VaR as quickly as the use of shorter historical observation periods, but such increases will affect VaR for a longer period of time. Similarly, after periods of increased volatility, as markets stabilize VaR predictions will remain more conservative for a period of time influenced by the length of the historical observation period. SVaR is subject to the limitations noted for VaR above, but the use of one-year data sets avoids the smoothing effect of the five-year data set used for VaR, and the absence of the five-year window gives a longer history of potential loss events. Therefore, although the significant period of stress during the 2007–2009 financial crisis is no longer contained in the historical five-year period used for management and regulatory VaR, SVaR continues to use that data. This approach aims to reduce the procyclicality of the regulatory capital requirements for market risks. We recognize that no single measure can encompass all risks associated with a position or portfolio. Thus, we use a set of metrics with both overlapping and complementary characteristics to create a holistic framework that aims to ensure material completeness of risk identification and measurement. As a statistical aggregate risk measure, VaR supplements our liquidity-adjusted stress and comprehensive stress testing frameworks. We also have a framework to identify and quantify potential risks not fully captured by our VaR model and refer to such risks as risks not in VaR. The framework underpins these potential risks with regulatory capital, calculated as a multiple of regulatory VaR and stressed VaR.
Sensitivity Analysis For Each Type Of Market Risk	Management value-at-risk (1-day, 95% confidence, 5 years of historical data) of our business divisions and Group Functions by general market risk type 1 For the year ended 31.12.20 USD million Equity Interest rates Credit spreads Foreign exchange Commodities Min. 3 6 5 2 2 Max. 29 11 11 7 6 Average 10 8 7 4 4 31.12.20 6 8 8 3 3 Total management VaR, Group 8 31 13 11 Average (per business division and risk type) Global Wealth Management 0 2 1 1 0 1 1 0 0 Personal & Corporate Banking 0 0 0 0 0 0 0 0 0 Asset Management 0 0 0 0 0 0 0 0 0 Investment Bank 7 32 12 10 10 7 6 4 4 Group Functions 4 7 5 6 0 4 3 1 0 Diversification effect 2,3 (5) (8) 0 (4) (4) (1) 0 For the year ended 31.12.19 USD million Equity Interest rates Credit spreads Foreign exchange Commodities Min. 2 6 3 2 1 Max. 14 12 8 8 6 Average 6 9 5 3 2 31.12.19 5 8 5 3 3 Total management VaR, Group 6 18 11 9 Average (per business division and risk type) Global Wealth Management 0 1 1 1 0 1 1 0 0 Personal & Corporate Banking 0 0 0 0 0 0 0 0 0 Asset Management 0 0 0 0 0 0 0 0 0 Investment Bank 4 17 9 7 6 7 4 3 2 Group Functions 4 8 5 5 1 5 2 1 0 Diversification effect 2,3 (5) (4) (1) (4) (2) (1) 0 1 Statistics at individual levels may not be summed to deduce the corresponding aggregate figures. The minima and maxima for each level may well occur on different days, and likewise, the VaR for each business line or risk type, being driven by the extreme loss tail of the corresponding distribution of simulated profits and losses for that business line or risk type, may well be driven by different days in the historical time series, rendering invalid the simple summation of figures to arrive at the aggregate total. 2 Difference between the sum of the standalone VaR for the business divisions and Group Functions and the VaR for the Group as a whole. 3 As the minima and maxima for different business divisions and Group Functions occur on different days, it is not meaningful to calculate a portfolio diversification effect. Audited \| Interest rate risk in the banking book is subject to a regulatory EVE sensitivity threshold of 15% of tier 1 capital. The exposure is calculated as the theoretical change in the present value of the banking book under the most adverse of the six FINMA interest rate scenarios. As of 31 De ce mber 202 0, the interest rate sensitivity of our banking book to a +1-basis-point parallel shift in yield curves was negative USD 27 . 2 million. The reported interest rate sensitivity excludes the additional tier 1 (AT1) capital instruments as per FINMA Pillar 3 di sclosure requirements, with a sensitivity of USD 4.2 million per basis point, and our equity, goodwill and real estate, with a modeled sensitivity of USD 22.2 million per basis point, of which USD 5.6 million and USD 15.9 million are attributable to the Sw iss franc and the US dollar portfolios, respectively. The most adverse of the six FINMA interest rate scenarios would be the “Parallel up” scenario, which would result in a change in the economic value of equity of negative USD 5.6 billion, representing a pro forma reduction of 10.0% of tier 1 capital, which would be well below the regulatory outlier test of 15% of tier 1 capital. The immediate effect of the “Parallel up” scenario on tier 1 capital as of 31 December 2020 would be a reduction of 1.2%, or USD 0.7 billion, arising from the part of our banking book that is measured at fair value through profit or loss and from the financial assets measured at fair value through OCI. This scenario would, however, have a positive effect on net interest income.  Interest rate risk – banking book USD million +1 bp Parallel up 1 Parallel down 1 Steepener 2 Flattener 3 Short-term up 4 Short-term down 5 CHF (5.2) (735.8) 832.3 (369.6) 225.5 (74.5) 79.0 EUR (0.9) (164.9) 163.2 (73.1) 29.9 (20.4) (4.7) GBP 0.2 48.7 (42.0) (31.7) 40.2 56.9 (47.5) USD (20.7) (4,612.8) 3,999.8 (395.5) (630.5) (2,188.9) 2,397.9 Other (0.6) (140.0) 3.6 20.8 (59.3) (105.7) 10.5 Total effect on economic value of equity as per Pillar 3 requirement as of 31.12.20 (27.2) (5,604.8) 4,956.9 (849.1) (394.1) (2,332.7) 2,435.2 Additional tier 1 (AT1) capital instruments 4.2 815.1 (868.4) (92.8) 272.8 573.6 (599.0) Total including AT1 capital instruments as of 31.12.20 (23.0) (4,789.7) 4,088.5 (942.0) (121.2) (1,759.1) 1,836.2 1 Rates across all tenors move by ±150 bps for Swiss franc, ±200 bps for euro and US dollar and ±250 bps for pound sterling. 2 Short-term rates decrease and long-term rates increase. 3 Short-term rates increase and long-term rates decrease. 4 Short-term rates increase more than long-term rates. 5 Short-term rates decrease more than long-term rates. Audited \| Under International Financial Reporting Standards (IFRS) effective on 31 December 20 20 , equity i nvestments not in the trading book may be classified as Financial assets at fair value not held for trading or Investments in associates . The fair value of equity investmen ts tends to be influenced by factors specific to the individual investments. Equity investments are generally intended to be held for the medium or long term and may be subject to lock-up agreements. For these reasons, we generally do not control these exp osures by using market risk measures applied to trading activities. However, such equity investments are subject to a different range of controls, including preapproval of new investments by business management and Risk Control, portfolio and concentration limits, and regular monitoring and reporting to senior management. They are also included in our Group-wide statistical and stress testing metrics, which flow into our risk appetite framework. As of 31 December 2020 , w e held equity investments totaling USD 3. 1 billion, of which USD 1.5 billion was classified as Financial assets at fair value not held for trading and USD 1. 6 billion as Investments in associates .  Audited \| Debt investments classified as Financial assets measured at fair value through OCI as of 31 December 20 20 were measured at fair value with changes in fair value recorded through Equity , and can broadly be categorized as money market instruments and debt securities primarily held for statutory, regulatory or liquidity reasons. The risk control framework applied to debt instruments classified as Financ ial assets measured at fair value through OCI depends on the nature of the instruments and the purpose for which we hold them. Our exposures may be included in market risk limits or be subject to specific monitoring and interest rate sensitivity analysis. They are also included in our Group-wide statistical and stress testing metrics, which flow into our risk appetite framework. Debt instruments classified as Financial assets measured at fair value through OCI had a fair value of USD 8.3 billion as of 31 December 2020 compared with USD 6.3 billion as of 31 December 2019. 

MD&A - Risk management and co_4

MD&A - Risk management and control - Treasury Management	12 Months Ended
MD&A - Risk management and control - Treasury Management	Dec. 31, 2020
MDA Risk Management And Control Treasury Management [Line Items]
Description Of Managing Liquidity Risk	Audited \| O ur management of balance sheet, liquidity and funding positions has the overall objective of optimizing our franchise ’s value across a broad range of market conditions while considering current and future regulatory constraints. We employ a number of measures to monitor these positions under normal and stressed conditions. In particular, we use stress scenarios to apply behavioral adjustments to our balance sheet and ca librate the results from these internal stress models with external measures, primarily the liquidity coverage ratio ( the LCR) and the net stable funding ratio ( the NSFR) . Our liquidity and funding strategy is proposed by Group Treasury and approved by the Group Asset and Liability Committee ( the Group ALCO), which is a committee of the Group Executive Board (the GEB) that is overseen by the Risk Committee of the Board of Directors ( the BoD).  Audited \| Liquidity and funding limits , triggers and targets are set at Group and, where appropriate, at legal entity and business division levels, and are reviewed and reconfirmed at least once a year by the BoD, the Group ALCO, the Group Chief Financial Officer, the Group Treasurer and the bus iness divisions, taking into consideration current and projected business strategy and risk tolerance. The principles underlying our limit , trigger and target framework are designed to maximize and sustain the value of our business franchise and maintain a n appropriate balance in the asset and liability structure. Structural limits , triggers and targets focus on the structure and composition of the balance sheet, with supplementary limits , triggers and targets designed to drive the utilization, diversificat ion and allocation of funding resources. To complement and support this framework, Group Treasury monitors the markets for early warning indicators regarding the current liquidity situation. The se liquidity status indicators are used at the Group level to assess both the overall global and regional situations for potential threats. Treasury Risk Control provides independent oversight over liquidity and funding risks.  Audited \| Our liquidity risk management aims to ensure that the firm has sufficient liquidity or access to funding sources to meet its liabilities when due, meet prudential requirements and to survive a severe three -month idiosyncratic and market-wide liquidity stress event; allowing for discrete m anagement a ctions instructed by Group Treasury in addition to monetizing the bank ’ s liquidity reserves . Our liquid assets are managed using limits, triggers and targets to maintain an appropriate level of diversification (issuer, tenor and other risk characteristics) in response to any expected or un expected volatility in funding availability or requirements caused by adverse market, operational or other firm-specific events. The liquid asset portfolio size is managed dynamically , so as to operate at all times within the risk appetite of the BoD and relevant Group and subsidiary liquidity requirem ents . Audited \| We perform stress testing to determine the optimal asset and liability structure that allows us to maintain an appropriately balanced liquidity and funding position under various scenarios. Liquidity crisis scen ario analysis and contingency funding planning support the liquidity management process and aim to ensure that immediate corrective measures to absorb potential sudden liquidity shortfalls can be put into effect.  Audited \| Our Group Contingency Funding Plan is an integral part of our global crisis management framework, which covers various types of crisis events. This Contingency Funding Plan contains an assessment of conti ngent funding sources and liquidity preservation actions in a stressed environment, liquidity status indicators and metrics, and contingency procedures. Our funding diversification and global scope help to protect our liquidity position in the event of a c risis. We regularly assess and test all material known and expected cash flows, as well as the level and availability of high-grade collateral that could be used to raise additional funding if required. Our contingent funding sources include our h igh-quality liquid asset ( HQLA ) portfolios, available and unutilized liquidity facilities at several major central banks, contingent reductions of liquid trading portfolio assets , and other available management actions.  Audited \| Group Treasury regularly monitors our funding status, including concentration risks, aiming to ensure that we maintain a well-balanced and diversified liability structure. Our funding risk management aims for the optimal asset and liability structure to finance our businesses reliably and cost-efficiently . O ur funding activities are planned by analyzing the overall liquidity and funding profile of our balance sheet, taking into account the amount of stable funding that would be needed to support ongoing business activities through periods of difficult market conditions. 
UBS AG
MDA Risk Management And Control Treasury Management [Line Items]
Description Of Managing Liquidity Risk	Audited \| O ur management of balance sheet, liquidity and funding positions has the overall objective of optimizing our franchise ’s value across a broad range of market conditions while considering current and future regulatory constraints. We employ a number of measures to monitor these positions under normal and stressed conditions. In particular, we use stress scenarios to apply behavioral adjustments to our balance sheet and ca librate the results from these internal stress models with external measures, primarily the liquidity coverage ratio ( the LCR) and the net stable funding ratio ( the NSFR) . Our liquidity and funding strategy is proposed by Group Treasury and approved by the Group Asset and Liability Committee ( the Group ALCO), which is a committee of the Group Executive Board (the GEB) that is overseen by the Risk Committee of the Board of Directors ( the BoD).  Audited \| Liquidity and funding limits , triggers and targets are set at Group and, where appropriate, at legal entity and business division levels, and are reviewed and reconfirmed at least once a year by the BoD, the Group ALCO, the Group Chief Financial Officer, the Group Treasurer and the bus iness divisions, taking into consideration current and projected business strategy and risk tolerance. The principles underlying our limit , trigger and target framework are designed to maximize and sustain the value of our business franchise and maintain a n appropriate balance in the asset and liability structure. Structural limits , triggers and targets focus on the structure and composition of the balance sheet, with supplementary limits , triggers and targets designed to drive the utilization, diversificat ion and allocation of funding resources. To complement and support this framework, Group Treasury monitors the markets for early warning indicators regarding the current liquidity situation. The se liquidity status indicators are used at the Group level to assess both the overall global and regional situations for potential threats. Treasury Risk Control provides independent oversight over liquidity and funding risks.  Audited \| Our liquidity risk management aims to ensure that the firm has sufficient liquidity or access to funding sources to meet its liabilities when due, meet prudential requirements and to survive a severe three -month idiosyncratic and market-wide liquidity stress event; allowing for discrete m anagement a ctions instructed by Group Treasury in addition to monetizing the bank ’ s liquidity reserves . Our liquid assets are managed using limits, triggers and targets to maintain an appropriate level of diversification (issuer, tenor and other risk characteristics) in response to any expected or un expected volatility in funding availability or requirements caused by adverse market, operational or other firm-specific events. The liquid asset portfolio size is managed dynamically , so as to operate at all times within the risk appetite of the BoD and relevant Group and subsidiary liquidity requirem ents . Audited \| We perform stress testing to determine the optimal asset and liability structure that allows us to maintain an appropriately balanced liquidity and funding position under various scenarios. Liquidity crisis scen ario analysis and contingency funding planning support the liquidity management process and aim to ensure that immediate corrective measures to absorb potential sudden liquidity shortfalls can be put into effect.  Audited \| Our Group Contingency Funding Plan is an integral part of our global crisis management framework, which covers various types of crisis events. This Contingency Funding Plan contains an assessment of conti ngent funding sources and liquidity preservation actions in a stressed environment, liquidity status indicators and metrics, and contingency procedures. Our funding diversification and global scope help to protect our liquidity position in the event of a c risis. We regularly assess and test all material known and expected cash flows, as well as the level and availability of high-grade collateral that could be used to raise additional funding if required. Our contingent funding sources include our h igh-quality liquid asset ( HQLA ) portfolios, available and unutilized liquidity facilities at several major central banks, contingent reductions of liquid trading portfolio assets , and other available management actions.  Audited \| Group Treasury regularly monitors our funding status, including concentration risks, aiming to ensure that we maintain a well-balanced and diversified liability structure. Our funding risk management aims for the optimal asset and liability structure to finance our businesses reliably and cost-efficiently . O ur funding activities are planned by analyzing the overall liquidity and funding profile of our balance sheet, taking into account the amount of stable funding that would be needed to support ongoing business activities through periods of difficult market conditions. 

MD&A - Capital management

MD&A - Capital management	12 Months Ended
MD&A - Capital management	Dec. 31, 2020
Disclosure MDA Capital Management [Line Items]
Disclosure Of Objectives Policies And Processes For Managing Capital Explanatory	Audited \| An adequate level of total loss-absorbing capacity (TLAC) meeting both internal assessment and regulatory requirements is a prerequisite for conducting our business activities. Audited \| We manage our balance sheet, RWA, leverage ratio denominator ( LRD ) and TLAC ratio levels on the basis of our regulatory TLAC requirements and within our internal limits and targets. Our strategic focus is on achiev ing an optimal attribution and use of financi al resources between our business divisions and Group Functions , as well as between our legal entities, while remaining within the limits defined for the Group and allocated to the business divisions by the Board of Directors ( the BoD). These resource allo cations, in turn, affect business plans and earnings projections, which are reflected in our capital plans. The annual strategic planning process includes a capital-planning component that is key in defining our capital targets. It is based on an attributi on of Group RWA and LRD internal limits to the business divisions . Limits and targets are established at Group and business division levels, and are approved by the BoD at least annually. In the target-setting process, we take into account the current and potential future TLAC requirements, our aggregate risk exposure in terms of capital-at-risk, the assessment by rating agencies, comparisons with peers and the effect of expected accounting policy changes.
Regulatory capital and movement [text block]	Reconciliation of IFRS equity to Swiss SRB common equity tier 1 capital USD million 31.12.20 31.12.19 1 Total IFRS equity 59,765 54,675 Equity attributable to non-controlling interests (319) (174) Defined benefit plans, net of tax (41) (9) Deferred tax assets recognized for tax loss carry-forwards (5,617) (6,121) Deferred tax assets on temporary differences, excess over threshold (5) (235) Goodwill, net of tax 2 (6,319) (6,178) Intangible assets, net of tax (296) (195) Compensation-related components (not recognized in net profit) (1,349) (1,717) Expected losses on advanced internal ratings-based portfolio less provisions (330) (495) Unrealized (gains) / losses from cash flow hedges, net of tax (2,321) (1,260) Own credit related to gains / losses on financial liabilities measured at fair value that existed at the balance sheet date 382 93 Own credit related to gains / losses on derivative financial instruments that existed at the balance sheet date (45) (46) Unrealized gains related to debt instruments at fair value through OCI, net of tax (152) (32) Prudential valuation adjustments (150) (104) Accruals for dividends to shareholders (1,314) (2,628) Capital reserve for potential share repurchases (2,000) Other 0 (40) Total common equity tier 1 capital 39,890 35,535 1 Refer to the “Accounting and financial reporting” and “Consolidated financial statements” sections of this report for information on the restatement of comparative information, where applicable. 2 Includes goodwill related to significant investments in financial institutions of USD 413 million as of 31 December 2020 (31 December 2019: USD 178 million) presented on the balance sheet line Investments in associates. Audited \| Our CET1 capital mainly cons ists of : share capital; share premium, which primarily consists of additional paid-in capital related to shares issued; and retained earnings. A detailed reconciliation of IFRS equity to CET1 capital is provided in the “Reconciliation of IFRS equity to Swiss SRB common equity tier 1 capital” table. O ur CET1 capital increased by USD 4.4 billion to USD 39.9 billion as of 31 December 2020 , mainly as a result of operating profit before tax of USD 8.2 billion , foreign currency translation effects of USD 1.2 billion and deferred tax assets on temporary differences of USD 0.4 billion . The increase was partly offset by our capital reserve for potential share repurchases of USD 2.0 billion , accruals for dividends of USD 1.3 billion , current tax expenses of USD 1.2 billion , share repurchases under our share repurchase program of USD 0.4 billion , and defined benefit plans of USD 0.3 billion . › Refer to “ UBS shares ” in this section for more information about the share repurchase program Our loss- absorbing additional tier 1 ( AT1 ) capital was stable at USD 16.3 billion , as the call of a USD 1.25 billion AT 1 capital instrument was offset by a USD 0.75 billion issuance of an AT1 capital instrument , as well as foreign currency translation and interest rate risk hedge effects. Audited \| Our total gone concern los s-absorbing capacity included USD 37.8 billion of TLAC-eligible senior unsecured debt, and increased by USD 7.8 billio n to USD 45.5 billion as of 31 December 2020 .
UBS AG
Disclosure MDA Capital Management [Line Items]
Disclosure Of Objectives Policies And Processes For Managing Capital Explanatory	Audited \| An adequate level of total loss-absorbing capacity (TLAC) meeting both internal assessment and regulatory requirements is a prerequisite for conducting our business activities. Audited \| We manage our balance sheet, RWA, leverage ratio denominator ( LRD ) and TLAC ratio levels on the basis of our regulatory TLAC requirements and within our internal limits and targets. Our strategic focus is on achiev ing an optimal attribution and use of financi al resources between our business divisions and Group Functions , as well as between our legal entities, while remaining within the limits defined for the Group and allocated to the business divisions by the Board of Directors ( the BoD). These resource allo cations, in turn, affect business plans and earnings projections, which are reflected in our capital plans. The annual strategic planning process includes a capital-planning component that is key in defining our capital targets. It is based on an attributi on of Group RWA and LRD internal limits to the business divisions . Limits and targets are established at Group and business division levels, and are approved by the BoD at least annually. In the target-setting process, we take into account the current and potential future TLAC requirements, our aggregate risk exposure in terms of capital-at-risk, the assessment by rating agencies, comparisons with peers and the effect of expected accounting policy changes.
Regulatory capital and movement [text block]	Reconciliation of IFRS equity to Swiss SRB common equity tier 1 capital (UBS Group AG vs UBS AG consolidated) As of 31.12.20 USD million UBS Group AG (consolidated) UBS AG (consolidated) Difference Total IFRS equity 59,765 58,073 1,691 Equity attributable to non-controlling interests (319) (319) 0 Defined benefit plans, net of tax (41) (41) 0 Deferred tax assets recognized for tax loss carry-forwards (5,617) (5,617) 0 Deferred tax assets on temporary differences, excess over threshold (5) (126) 121 Goodwill, net of tax (6,319) (6,319) 0 Intangible assets, net of tax (296) (296) 0 Compensation-related components (not recognized in net profit) (1,349) 0 (1,349) Expected losses on advanced internal ratings-based portfolio less provisions (330) (330) 0 Unrealized (gains) / losses from cash flow hedges, net of tax (2,321) (2,321) 0 Own credit related to gains / losses on financial liabilities measured at fair value that existed at the balance sheet date 382 382 0 Own credit related to gains / losses on derivative financial instruments that existed at the balance sheet date (45) (45) 0 Unrealized gains related to debt instruments at fair value through OCI, net of tax (152) (152) 0 Prudential valuation adjustments (150) (150) 0 Accruals for dividends to shareholders (1,314) (4,539) 3,225 Capital reserve for potential share repurchases (2,000) 0 (2,000) Other 0 (20) 20 Total common equity tier 1 capital 39,890 38,181 1,709

Significant accounting polici_2

Significant accounting policies (Policies)	12 Months Ended
Significant accounting policies (Policies)	Dec. 31, 2020
Significant Accounting Policies [Line Items]
Basis of accounting	Basis of accounting The Financial Statements have been prepared in accordance with International Financial Reporting Standards ( IFRS ) , as issued by the International Accounting Standards Board ( the IASB), and are presented in US dollars ( USD ) . Disclosures marked as audited in the “ Risk, capital, liquidity and funding, and balance sheet ” section of this report form an integral part of the Financial Statements. These disclosures relate to requirements under I FRS 7, Financial Instruments: Disclosures , and IAS 1, Presentation of Financial Statements , and are not repeated in this section. The accounting policies described in this Note have been applied consistently in all years presented unless otherwise stated in Note 1b. In addition, effective from 1 January 2019, the Group applies IFRS 16, Leases , which sets out the principles for the recognition, measurement, presentation and disclosure of leases . Within this Note, policies applied for periods that differ fro m those applied to the financial year ended 31 December 2020 are identified as “Comparative policy . ”
Critical accounting estimates and judgments	Critical accounting estimates and judgments Preparation of these Financial Statements under IFRS requires management to apply judgment and make estimate s and assumptions that affect reported amounts of assets, liabilities, income and expenses and disclosure of contingent assets and liabilities, and may involve significant uncertainty at the time they are made. Such estimates and assumptions are based on t he best available information. UBS regularly reassesses such estimates and assumptions, which encompass historical experience, expectations of the future and other pertinent factors, to determine their continuing relevance based on current conditions, upda ting them as necessary. Changes in those estimates and assumptions may have a significant effect on the Financial Statements. Further more , actual results may differ significantly from UBS’s estimates, which could result in significant losses to the Group, beyond what was anticipated or provided for. The following areas contain estimation uncertainty or require critical judgment and have a significant effect on amounts recognized in the Financial Statements: – expected credit loss measurement (refer to item 2g in this Note and to Note 2 0 ); – fair value measurement (refer to item 2f in this Note and to Note 2 1 ); – income taxes (refer to item 7 in this Note and to Note 8); – provisions and contingent liabilities (refer to item 11 in this Note and to Note 18 ) ; – post-employment benefit plans (refer to item 6 in this Note and to Note 2 6 ); – goodwill (refer to item 10 in this Note and to Note 1 3 ); and – consolidation of structured entities (refer to item 1 in this Note and to Note 28 ) .
Consolidation	1) Consolidation The Financial Statements comprise the financial statements of the parent company (UBS Group AG) and its subsidiaries, presented as a single economic entity ; intercompany transactions and balances have been eliminated. UBS consolidates all entities that it controls, incl uding structured entities (SEs), which is the case when it has : ( i ) power over the relevant activities of the entity ; (ii) exposure to an entity ‘s variable returns ; and (iii) the ability to use its power to affect its own returns. Consideration is given to all facts and circumstances to determine whether the Group has power over another entity , i.e. , the current ability to direct the relevant activities of an entity when decisions about those activities need to be made. Subsidiaries, including SEs, are con solidated from the date when control is g ained and deconsolidated from the date when control ceases. Control, or the lack thereof, is reassessed if facts and circumstances indicate that there is a change to one or more elements required to establish that c ontrol is present. Business combinations are accounted for using the acquisition method. The amount of non-controlling interest is measured at the non-controlling interest’s proportionate share of the acquiree’s identifiable net assets. › Refer to Note 28 for more information Critical accounting estimates and judgments Each individual entity is assessed for consolidation in line with the aforementioned consolidation principles. The assessment of control can be complex and require s the use of significant judgment , in particular in determining whether UBS has power over the entity . As the nature and extent of UBS’s involvement is unique for each entity, there is no uniform consolidation outcome by entity. Certain entities within a class may be consolidated while others may not. When carrying out the consolidation assessment, judgment is exercised considering all the relevant facts and circums tances, including the nature and activities of the investee, as well as the substance of voting and similar rights. › Refer to Note 28 for more information
Financial instruments	2 ) Financial instruments a. Recognition UBS recognizes financial instruments when it becomes a party to contractual provisions of an instrument. UBS applies settlement date accounting to all standard p urchases and sales of non-derivative financial instruments . In transactions wh ere UBS acts a s a transferee, to the extent such financial asset transfer does not qualify for derecognition by the t ransferor, UBS does not recogniz e the transferred instrument as its asset. UBS also acts in a fiduciary capacity, which results in it holding or placing assets on behalf of individuals, trusts, retirement benefit plans and other institutions. Unless these items meet the definition of an asset and the recognition cr iteria are satisfied, such assets are not recognized on UBS’s balance sheet and the related income is excluded from the F inancial S tatements. Client cash balances associated with derivatives clearing and execution services are not recognized on the balance sheet if, through contractual agreement, regulation or practice, UBS neither obtains benefits from nor controls such cash balances. b. Classi fication, measurement and presentation Financial assets All financial instruments are on initial recognition measured at fair value and classified as measured at amortized cost, fair value through other comprehensive income (FVOCI) or fair value through profit or loss (FVTPL) . For financial instruments subsequently measured at amortized cost or FVOCI , the initial fair value is adjusted for directly attributable transaction costs. Where the contractual terms of a debt instrument result in cash flows that are solely payments of principal and interest (SPPI) on the principal amount outstanding, the debt instrument is classified as measured at amortized cost if it is held within a business model that has an objective to hold financial assets to collect contractual cash flows , or at FVOCI if i t is held within a business model with the objective being achieved by both collecting contractual cash flows and selling financial assets . All other financial assets are measured at FVTPL , including those held for trading or those managed on a fair value basis, except for derivatives designated in a hedge relationship, in which case hedge accounting requirements apply (refer to item 2 j in this N ote for more information) . Business model assessment and contractual ca sh flow characteristics UBS determines the nature of a business model by considering the way financial assets are managed to achieve a particular business objective. In assessing whether the contractual cash flows are SPPI, the Group considers whether the contractual terms of the financial asset contain a term that could change the timing or amount of contractual cash flows arising over the life of the instrument. Financial liabilities Financial liabilities measured at amortized cost Debt issued measured at amortized cost includes contingent capital instruments contain ing contractual provisions under which the principal amounts would be written down or converted into equity upon either a specified common equity tier 1 ( CET1 ) ratio breach or a determination by the Swiss Financial Market Supervisory Authority ( FINMA ) that a viability event has occurred. Such contractual provisions are not derivatives , as the underlying is deemed to be a non-financial variable specific to a part y to the contract. Where there is a legal bail-in mechanism for write-down or conversion into equity (as is the case, for instance, with senior unsecured debt issued by the Group that is subject to write-down or conversion under resolution authority grant ed to FINMA under Swiss law), the amortized cost accounting treatment applied to these instruments is not affected. If the debt were to be written down or converted into equity in a future period, it would be partially or fully derecognized, with the dif ference between its carrying amount and the fair value of any equity issued recognized in the income statement. A gain or loss is recognized in Other income when debt issued is subsequently repurchased for market-making or other activities. A subsequent sa le of own bonds in the market is treated as a reissuance of debt. Financial liabilities measured at fair value through profit or loss UBS designates certain issued debt instruments as financial liabilities at fair value through profit or loss, on the basi s that such financial instruments include embedded derivatives and / or are managed on a fair value basis (refer to the table below for more information), in which case bifurcation of the embedded derivative component is not required. Financial instruments including embedded derivatives arise predominantly from the issuance of certain structured debt instruments. Measurement and presentation After initial recognition, UBS classifies, measures and presents its financial assets and liabilities in accordance with IFRS 9, as described in the table on the following pages. Classification, measurement and presentation of financial assets Financial assets c lassification Significant items included Measurement and presentation Measured at amortized cost This classification includes: – cash and balances at central banks ; – loans and advances to banks ; – cash collateral receivables on securities borrowed ; – receivables on reverse repurchase agreements ; – cash collateral receivables on derivative instruments ; – residential and commercial mortgages ; – corporate loans ; – secured loans, including Lombard loans, and unsecured loans ; – loans to financial advisors ; and – debt securities held as high-quality liquid assets (HQLA) . Measured at amortized cost using the effective interest method less allowances for expected credit losses (ECL) (refer to items 2 d and 2 g in this Note for more information). The following items are recognized in the income statement: – interest income, which is accounted for in accordance with item 2 d in this Note ; – ECL and reversals ; and – f oreign exchange translation gains and losses . When the financial asset at amortized cost is derecognized , the gain or loss is recognized in the income statement. For a mounts arising from settlement of certain derivatives, refer to the next page. Measured at FVOCI Debt instruments measured at FVOCI This classification primarily includes debt securities and certain asset-backed securities held as HQLA. Measured at fair value , with unrealized gains and losses reported in Other comprehensive income, net of applicable income taxes, until such investments are derecognized. Upon derecognition , any accumulated balances in Other comprehensive income are reclassified to the income statement and reported within Other income. The following items , which are determined on the same basis as for financial assets measured at amortized cost , are recognized in the income statement: – interest income, which is accounted for in accordance with item 2 d in this Note ; – ECL and reversals ; and – foreign exchange translation gains and losses. Classification, measurement and presentation of financial assets Financial assets c lassification Significant items included Measurement and presentation Measured at FVTPL Held for trading Financial assets held for trading include: – all derivatives with a positive replacement value, except those that are designated and effective hedging instruments; and – other financial assets acquired principally for the purpose of selling or repurchasing in the near term, or that are part of a portfolio of identified financial instruments that are managed together and for which there is evidence of a recent actual pattern of short-term profit taking. Included in this category are debt instruments (including those in the form of securi ties, money market paper , and traded corporate and bank loans) and equity instruments. Measured at fair value , with changes recognized in the income statement . Derivative assets (including derivatives that are designated and effective hedging instruments ) are generally presented as Derivative financial instruments , except those exchange-traded and OTC-cleared derivatives that are considered to be settled on a daily basis or in substance net settled on a daily basis, which are presented within Cash collate ral receivables on derivative instruments. Changes in fair value, initial transaction costs , dividends and gains and losses arising on disposal or redemption are recognized in Other net income from financial instruments measured at fair value through prof it or loss , 1 except interest income on instruments other than derivatives (refer to item 2d in this Note), interest on derivatives designated as hedging instruments in hedges of interest rate risk and forward points on certain short - and long -duration foreign exchange contracts acting as economic hedges , which are reported in Net interest income. Changes in the fair value of derivatives that are designated and effective hedging instruments are presented either in the income statement or O ther comprehe nsive income , depending on the type of hedge relationship (refer to item 2 j in this Note for more information). Mandatorily measured at FVTPL – Other This classification includes financial asset s mandatorily measured at FVTPL that are not held for trading , as follows : – c ertain structured loans, certain commercial loans, receivables under reverse repurchase and cash collateral on securities borrowing agreements that are managed on a fair value basis ; – loans managed on a fair value basis , including those hedged with credit derivatives ; – c ertain debt securities held as HQLA and managed on a fair value basis ; – c ertain investment fund holdings and assets held to hedge delivery obligations related to cash-settled employee compensation plans ; – b rokerage receivables, for which contractual cash flows do not meet the SPPI criterion because the aggregate balance is accounted for as a single unit of account, with interest being calculated on the individual components ; – a uction rate securities, for whic h contractual cash flows do not meet the SPPI criterion because interest may be reset at rates that contain leverage ; – e quity instruments ; and – a ssets held under unit-linked investment contracts . 1 E ffective from 1 January 2019, th is line item includes dividends (prior to 1 January 2019, dividends were included within Net interest income ), intermediation income arising from certain client-driven Global Wealth Management and Personal & Corporate Banking financial transactions, foreign c urrency translation effects and income and expenses from exposures to precious metals . Classification, measurement and presentation of financial liabilities Financial liabilities c lassificati on Significant items included Measurement and presentation Measured at amortized cost This classification includes: – demand and time deposits; – retail savings / deposits; – amounts payable under repurchase agreements; – cash collateral on securities lent; – non-structured fixed-rate bonds; – subordinated debt; – certificates of deposit and covered bonds; and – cash collateral payables on derivative instruments. Measured at amortized cost using the effective interest method. When the financial liability at amorti zed cost is derecognized, the gain or loss is recognized in the income statement. Measured at fair value through profit or loss Held for trading Financial liabilities held for trading include: – all derivatives with a negative replacement value (including certain loan commitments) , except those that are designated and effective hedging instruments; and – obligations to deliver financial instruments, such as debt and equity instruments, that UBS has sold to third parties but does not own (short positions). Mea surement and presentation of financial liabilities classified at FVTPL follow the same principles as for financial assets classified at FVTPL, except that the amount of change in the fair value of the financial liability designated at FVTPL that is attribu table to changes in UBS’s own credit risk is presented in O ther comprehensive income directly within R etained earnings and is never reclassified to the income statement . Derivative liabilities (including derivatives that are designated and effective hedging instruments) are generally presented as Derivative financial instruments , except those exchange-traded and OTC-cleared derivatives that are considered to be settled on a daily basis or in su bstance net settled on a daily basis, which are presented within Cash collateral payables on derivative instruments. Designated at FVTPL UBS designate s at FVTPL the following financial liabilities: – issued hybrid debt instruments that primarily include equity-linked, credit-linked and rates-linked bonds or notes ; – i ssued debt instruments managed on a fair value basis ; – c ertain payables under repurchase agreements and cash collateral on securities lending agreements that are managed in conjunction with associated reverse repurchase agreements and cash collateral on securities borrowed ; – a mounts due under unit-linked investment contracts whose cash flows are linked to financial assets measured at FVTPL and eliminate an accounting mismatch ; and – b rokerage pa yables, which arise in conjunction with brokerage receivables and are measured at FVTPL to achieve measurement consistency .
Loan commitments	c. Loan commitments and financial guarantees Loan commitments are arrangements to provide credit under defined terms and conditions. Irrevocable loan commitments are classified as: ( i ) derivative loan commitments measured at fair value through profit or loss; (ii) loan commitments designat ed at fair value through profit or loss; or (iii) loan commitments not measured at fair value.
Financial guarantee contracts	Financial guarantee contracts are contracts that require UBS to make specified payments to reimburse the holder for an incurred loss because a specified debtor f ails to make payments when due in accordance with the terms of a specified debt instrument.
Interest income and expense	d . Interest income and expense Interest income and expense are recognized in the income statement based on the effective interest method . When calculating the effec tive interest rate (EIR) for financial instruments (other than credit-impaired financial instruments), UBS estimates future cash flows considering all contractual terms of the instrument, but not expected credit losses, with the EIR applied to the gross ca rrying amount of the financial asset or the amortized cost of a financial liability. However, when a financial asset becomes credit-impaired after initial recognition, interest income is determined by applying the EIR to the amortized cost of the instrumen t, which represents the gross carrying amount adjusted for any credit loss allowance. Upfront fees, including fees on loan commitments not measured at fair value where a loan is expected to be issued, and direct costs are included within the initial measu rement of a financial instrument measured at amortized cost or FVOCI and recognized over the expected life of the instrument as part of its EIR. Fees related to loan commitments where no loan is expected to be issued, as well as loan syndication fees where UBS does not retain a portion of the syndicated loan or where UBS does retain a portion of the syndicated loan at the same effective yield for comparable risk as other participants, are included in Net fee and commission income and either recognized over the life of the commitment or when syndication occurs . › Refer to item 3 in this Note for more information Interest income on financial assets, excluding derivatives, is included in interest income when positive and in i nterest expense when negative . Simil arly, interest expense on financial liabilities, excluding derivatives, is included in i nterest expense , except when interest rates are negative, in which case it is included in i nterest income . › Refer to item 2 b in this Note and Note 3 for more information
Derecognition	e . Derecognition Financial assets UBS derecognizes a financial asset, or a portion of a financial asset, when the contractual rights to the cash flows from the financial asset expire, or UBS has either ( i ) transferred the contractual right s to receive the cash flows from the asset, or (ii) retained the contractual rights to receive the cash flows of that asset, but assumed a contractual obligation to pay the cash flows to one or more entities, subject to certain criteria. Transferred financial assets are derecognized if the purchaser has received substantially all the risks and rewards of the asset or a significant part of the risks and rewards combined with a practical ability to sell or pledge the asset. Where financial assets have b een pledged as collateral or in similar arrangements, they are considered to have been transferred if the counterparty has received the contractual right s to the cash flows of the pledged assets, as may be evidenced by , for example, the counterparty’s righ t to sell or repledge the assets. In transfers where control over the financial asset is retained, UBS continues to recognize the asset to the extent of its continuing involvement, determined by the extent to which it is exposed to changes in the value of the transferred asset following the transfer. Certain over-the-counter (OTC) derivative contracts and most exchange-traded futures and optio n contracts cleared through central cl earing counterpartie s and exchanges are considered to be settled on a daily basis , as the payment or receipt of variation margin on a daily basis represents legal or economic settlement, which results in derecognition of the associated derivatives . › Refer to item 2i in this Note, Note 22 and Note 23 for more information Financial liabilities UBS derecognizes a financial liability from its balance sheet when it is extinguished ; i.e., when the obligation specified in the contract is discharged, canceled or expire s . When an existing financial liability is exchanged for a new one from the same lender on substantially different terms, or the terms of an existing liability are substantially modified, the original liability is derecognized and a new liability recognized with any difference in the respective carrying amounts recognized in the income statement.
Fair value of financial instruments	f . Fair value of financial instruments UBS accounts for a significant portion of its assets and liabilities at fair value. Fair value is the price on the measurement date that would be received for the sale of an asset or paid to transfer a liability in an orderly transaction between market participants in the principal market, or in the most advantageous market in the absence of a principal market. › Refer to Note 21 for more information Critical accounting estimates and judgments The use of valuation techniques, modeling assumptions and estimates of unobservable market inputs in the fair valuation of financial instruments require s significant judgment and could affect the amount of gain or loss recorded for a particular position. Valuation techniques that rely more heavily on unobservable inputs and sophisticated models inherently require a higher leve l of judgment and may require adjustment to reflect factors that market participants would consider in estimating fair value, such as close-out costs, which are presented in Note 2 1 d. UBS‘ s governance framework over fair value measurement is described in Note 2 1 b , and UBS provides a sensitivity analysis of the estimated effects arising from changing significant unobservable inputs in Level 3 financial instruments to reasonably possible alternative assumptions within Note 2 1 g. › Refer to Note 21 for more information
Allowances and provisions for expected credit losses	g . Allowances and provisions for expected credit losses Expected credit losses (ECL) are recognized for financial assets measured at amortized cost, financial assets measured at FVOCI, fee and lease receivables, financial guarantees and loan commitments not measured at fair value . ECL are also recognized on the undrawn portion of revolving revocable credit lines, which include UBS’s credit card limits and master credit facilities, and are referred to by UBS as “other credit lines.” Though these other credit lines are revocable at any time , UBS is exposed to credit risk because the borrower has the ability to draw down funds before UBS can take credit risk mitigation actions. Recognition of expected credit losses ECL are recognized on the following basis: – Stage 1 instruments: Maximum 12-month ECL are recognized from initial recognition, reflecting the portion of lifetime cash shortfalls that would result if a default occurs in the 12 months after the reporting date, weighted by the risk of a default occurring. – Stage 2 instruments: Lifetime ECL are recognized if a significant increase in credit risk (SICR) is observed subsequent to the instrument’s initial recognition, reflecting lifetime cash shortfalls that would result from all possible d efault events over the expected life of a financial instrument, weighted by the risk of a default occurring. When an SICR is no longer observed, the instrument will move back to stage 1. – Stage 3 instruments: Lifetime ECL are always recognized for credit-im paired financial instruments, as determined by the occurrence of one or more loss events, by estimating expected cash flows based on a chosen recovery strategy. Credit-impaired exposures may include positions for which no allowance has been recognized, for example because they are expected to be fully recoverable through collateral held. – Changes in lifetime ECL since initial recognition are also recognized for assets that are purchased or originated credit-impaired (POCI). POCI financial instruments include those that are purchased at a deep discount or newly originated with a defaulted co unterparty ; they remain a separate category until derecognition . All or part of a financial asset is written off if it is deemed uncollectible or forgiven. Write-offs reduce the principal amount of a claim and are charged against related allowances for credit losses. Recoveries , in part or in full, of amounts previously written off are generally credited to Credit loss (expense) / release . ECL are recognized in the income statement in Credit loss (expense) / release . A corresponding ECL allowance is reported as a decrease in the carrying amount of financial assets measured at amortized cost on the balance sheet. For financial assets that are FVOCI, the carrying amount is not reduced, but an accumulated amount is recognized in Other comprehensive inco me . For off-balance sheet financial instruments and other credit lines, provisions for ECL are presented in Provisions . Default and credit impairment UBS applies a single definition of default for credit risk management purposes, regulatory reporting and E CL, with a counterparty classified as defaulted based on quantitative and qualitative criteria. › Refer to ‘’Credit policies for distressed assets’’ in the ‘’Risk management and control’’ section of this report for more information Measurement of expected c redit losses IFRS 9 ECL reflect an unbiased, probability-weighted estimate based on loss expectations resulting from default events. The method used to calculate ECL applies the following principal factors: probability of default (PD), loss given default ( LGD) and exposure at default (EAD ). Parameters are generally determined on an individual financial asset level. Based on the materiality of the portfolio, for credit card exposures and personal account overdrafts in Switzerland, a portfolio approach is app lied that derives an average PD and LGD for the entire portfolio. PDs and LGDs used in the ECL calculation are point-in-time (PIT)-based for key portfolios and consider both current conditions and expected cyclical changes. For material portfolios, PD s and LGD s are determined for different scenarios, whereas EAD projections are treated as scenario independent. For the purpose of determining the ECL-relevant parameters, UBS leverages its Pillar 1 internal ratings-based (IRB) models that are also used in dete rmining expected loss (EL) and risk-weighted assets under the Basel III framework and Pillar 2 stress loss models. Adjustments have been made to these models and IFRS 9-related models have been developed that consider the complexity, structure and risk profile of relevant portfolios and take account of the fact that PDs and LGDs used in the ECL calculation are PIT-based, as opposed to the corresponding Basel III through-the-cycle (TTC) parameters. All models that are relevant for measuring expected credi t losses are subject to UBS ’ s model validation and oversight processes. Probability of default: PD represents the likelihood of a defau lt over a specified time period. A 12-month PD represents the likelihood of default determined for the next 12 months and a lifetime PD represents the probability of default over the remaining lifetime of the instrument. PIT PDs are derived from TTC PDs an d scenario forecasts. The modeling is region-, industry- and client segment-specific and considers both macroeconomic scenario dependencies and client-idiosyncratic information. Exposure at default: EAD represents an estimate of the exposure to credit risk at the time of a potential default occurring, considering expected repayments, interest payments and accruals, discounted at the EIR. Future drawdowns on facilities are considered through a credit conversion factor (CCF) that is reflective of historical d rawdown and default patterns and the characteristics of the respective portfolios. Loss given default: LGD represents an estimate of the loss at the time of a potential default occurring , taking into account expected future cash flows from collateral and o ther credit enhancements, or expected payouts from bankruptcy proceedings for unsecured claims and, where applicable, time to realization of collateral and the seniority of claims. The LGD is commonly expressed as a percentage of the EAD. Estimation of exp ected credit losses Number of scenarios and estimation of scenario weights The determination of the probability-weighted ECL requires evaluating a range of diverse and relevant future economic conditions, especially with a view to modeling the non-linear effect of assumptions about macroeconomic factors on the estimate. To accommodate this requirement, UBS uses different economic scenarios in the ECL calculation . Each scenario is represented by a specific scenario narrative, which is relevant considering the exposure of key portfolios to economic risks, and for which a set o f consistent macroeconomic variables is determined. An econometric model is used to provide an input into the scenario weight assessment process giving a first indication of the probability that the GDP forecast used for each scenario would materialize, if historically observed deviations of GDP growth from trend growth were representative. As such historical analyses of GDP development do not include an assessment of the underlying economic or political causes, management positions the model output into th e context of current conditions and future expectations and applies material judgment in determining the final scenario weights. The determined weights constitute the probabilities that the respective set of macroeconomic conditions will occur and not tha t the chosen particular narratives with the related macroeconomic variables will materialize. Macroeconomic and other factors The range of macroeconomic, market and other factors that is modeled as part of the scenario determination is wide, and historica l information is used to support the identification of the key factors. As the forecast horizon increases, the availability of information decreases, requiring an increase in judgment. For cycle-sensitive PD and LGD determination purposes, UBS projects the relevant economic factors for a period of three years before reverting, over a specified period, to a cycle-neutral PD and LGD for longer-term projections. Factors relevant for ECL calculation vary by type of exposure . Regional and client - segment charact eristics are generally taken into account, with specific focus on Switzerland and the US , considering UBS’s key ECL-relevant portfolios. For UBS, the following forward-looking macroeconomic variables represent the most relevant factors for ECL calculation: – GDP growth rates, given their significant effect on borrowers’ performance; – unemployment rates, given their significant effect on private clients’ ability to meet contractual obligations; – house price indices, given their significant effect on mortgage collateral valuations; – interest rates, given their significant effect on counterparties’ abilities to service debt; – consumer price indices, given their overall relevance for companies’ performance, private clients’ purchasing power and economic stability ; and – equity indices, given that they are an important factor in our corporate rating tools. Scenario generation, review process and governance A team of economists, who are part of Group Risk Control, develop the forward - looking macroeconomic assumptions with involv ement from a broad range of experts . The scenarios, their weight and the key macroeconomic and other factors are subject to a critical assessment by the Scenario and Operating Committee s , which include senior management from Group Risk and Group Finance . Important aspects for the review include whether there may be particular credit risk concerns that may not be capable of being addressed systematically and require post-model adjustments for stage allocation and E CL allowance . The Group Model Governance Board , as the highest authority under UBS’s model governance framework , ratifies the decisions taken by the Operating Committee. › Refer to Note 20 for more information ECL measurement period The period for which l ifetime ECL are determined is based on the maximum contractual period that UBS is exposed to credit risk, taking into account contractual extension, termination and prepayment options. For irrevocable loan commitments and financial guarantee contracts, the measurement period represents the maximum contractual period for which UBS has an obligation to extend credit. Additionally, some financial instruments include both an on-demand loan and a revocable undrawn commitment, where the contractual cancelation right does not limit UBS’s exposure to credit risk to the contractual notice period, as the client has the ability to draw down funds before UBS can take risk-mitigating actions. In such cases, UBS is required to estimate the period over which it is exposed to credit risk. This applies to UBS’s credit card limits, which do not have a defined contractual maturity date, are callable on de mand and where the drawn and undrawn components are managed as one exposure. The exposure arising from UBS’s credit card limits is not significant and is managed at a portfolio level, with credit actions triggered when balances are past due. An ECL measure ment period of seven years is applied for credit card limits, capped at 12 months for stage 1 balances, as a proxy for the period that UBS is exposed to credit risk. Customary master credit agreements in the Swiss corporate market also include on-demand lo ans and revocable undrawn commitments. For smaller commercial facilities , a risk-based monitoring ( RbM ) approach is in place that highlights negative trends as risk events, at an individual facility level, based on a combination of continuously updated risk indicators. The risk events trigger additional credit reviews by a risk officer, enabling informed credit decisions to be taken. Larger corporate facilities are not subject to RbM , but are reviewed at least annually through a formal credit review. UBS has assessed these credit risk management practices and considers both the RbM approach and formal credit review s as substantive credit reviews resulting in a re-origination of the given facility . Following this, a 12 - month measurement period from the rep orting date is used for both types of facilities as an appropriate proxy of the period over which UBS is exposed to credit risk, with 12 months also used as a look-back period for assessing SICR, always from the respective reporting date. Significant incre ase in credit risk Financial instruments subject to ECL are monitored on an ongoing basis. To determine whether the recognition of a maximum 12-month ECL continues to be appropriate, an assess ment is made as to whether an SICR has occurred since initial r ecognition of the financial instrument , applying both quantitative and qualitative factors. Primarily, UBS assesses changes in an instrument’s risk of default on a quantitative basis by comparing the annualized forward-looking and scenario-weighted lifeti me PD of an instrument determined at two different dates: – at the reporting date; and – at inception of the instrument. If, based on UBS’s quantitative modeling, an increase exceeds a set threshold, an SICR is deemed to have occurred and the instrument is t ransferred to stage 2 with lifetime ECL recognized. The threshold applied varies depending on the original credit quality of the borrower , with a higher SICR threshold set for those instruments with a low PD at inception. The SICR assessment based on PD ch anges is made at an individual financial asset level. A high-level overview of the SICR trigger , which is a multiple of the annualized remaining lifetime PIT PD expressed in rating downgrades , is provided in the “SICR thresholds” table below. The actual SI CR thresholds applied are defined on a more granular level by interpolating between the values shown in the table below. SICR thresholds Internal rating at origination of the instrument Rating downgrades / SICR trigger 0–3 3 4–8 2 9–13 1 › Refer to the “ Risk management and control ” section of this report for more details about UBS’s internal grading system Irrespective of the SICR assessment based on default probabilities, credit risk is generally deemed to have significantly increased for an instr ument if the contractual payments are more than 30 days past due. For certain less material portfolios, specifically the Swiss credit card portfolio , the 30-day past due criterion is used as the primary indicator of an SICR. Where instruments are transferr ed to stage 2 due to the 30-day past due criterion, a minimum period of six months is applied before a transfer back to stage 1 can be triggered. For instruments in Personal & Corporate Banking and Global Wealth Management Region Switzerland that are betwe en 90 and 180 days past due but have not been reclassified to stage 3, a one-year period is applied before a transfer back to stage 1 can be triggered. Additionally, based on individual counterparty-specific indicators, external market indicators of credit risk or general economic conditions, counterparties may be moved to a watch list, which is used as a secondary qualitative indicator for an SICR. Exception management is further applied, allowing for individual and collective adjustments on exposures shar ing the same credit risk characteristics to take account of specific situations that are not otherwise fully reflected. In general, the overall SICR determination process does not apply to Lombard loans, securities financing transactions and certain other asset-based lending transactions, because of the risk management practices adopted, including daily monitoring processes with strict margining. If margin calls are not satisfied, a position is closed out and classified as a stage 3 position. In exceptional cases, an individual adjustment and a transfer into stage 2 may be made to take account of specific facts. Credit risk officers are responsible for the i dentification of an SICR , which for accounting purposes is in some respects different from internal credit risk management processes . This difference mainly arises because ECL accounting requirements are instrument-s pecific, such that a borrower can have multiple exposures allocated to different stages, and maturing loans i n stage 2 will migrate to stage 1 upon renewal irrespective of the actual credit risk at that time. Under a risk- based approach, a holistic counter party credit assessment and the absolute level of risk at any given date will determine what risk - mitigating actions may be warranted. › Refer to the “ Risk management and control ” section of this report for more information Critical accounting estimates and judgments The calculation of ECL requires management to apply significant judgment and make estimates and assumptions that can result in significant changes to the timing and amount of ECL recognized. Determination of a significant increase in credit risk IFRS 9 does not include a definition of what constitutes an SICR , with UBS’s assessment considering qualitative and quantitative criteria. An IFRS 9 O perating C ommittee has been established to review and challenge the SICR results. Scenarios, scenario weights and macroeconomic variables ECL reflect an unbiased and probability-weighted amount, which UBS determines by evaluating a range of possible outcomes. Management selects forward-looking scenarios which include relevant macroeconomic variables and management’s assumptions around future economic conditions. An IFRS 9 S cenario C ommittee, in addition to the O perating C ommittee, is in place to derive , review and challenge the scenario selection and weights as well as to determine whether any additional post-model adjustments are required that may significantly affect ECL . ECL measurement period Lifetime ECL are generally determined based upon the contractual maturity of the transaction, which significantly affects ECL. For credit card limits and Swiss callable master credit facilities, judgment is required , as UBS must determine the period over w hich it is exposed to credit risk. A seven-year period is applied for credit card limits, capped at 12 months for stage 1 positions, and a 12-month period applied for master credit facilities. Modeling and post-model adjustments A number of complex model s have been developed or modified to calculate ECL, with additional post-model adjustments required which may significantly affect ECL. The models are governed by UBS’s model validation controls and approved by the Group Model Governance Board (the GMGB). The post-model adjustments are approved by the IFRS 9 O perating C ommittee and endorsed by the GMGB. The Group provides a sensitivity analysis covering key macroeconomic variables , scenario weights and SICR trigger points on ECL measurement within Note 2 0f . › Refer to Note 2 0 for more information
Restructured and modified financial assets	h . Restructured and modified financial assets When payment default is expected or where default has already occurred, UBS may grant concessions to borrowers in financial difficulties that it wo uld not consider in the normal course of its business, such as preferential interest rates, extension of maturity, modifying the schedule of repayments, debt / equity swap, subordination , etc . When a concession or forbearance measure is granted, each case is considered in dividually and the exposure is generally classified as being in default. Forbearance classification will remain until the loan is collected or written off, non-preferential conditions s uperseding preferential conditions are granted or until the counterparty has recovered and the preferential conditions no longer exceed UBS’s risk tolerance. Modifications result in an alteration of future contractual cash flows and can occur within UBS’s normal risk tolerance or as part of a credit restructuring where a counterparty is in financial difficulties. A restructuring or modification of a financial asset could lead to a substantial change in the terms and conditions, resulting in the original fin ancial asset being derecognized and a new financial asset being recognized. Where the modification does not result in a derecognition , any difference between the modified contractual cash flows discounted at the original EIR and the existing gross carrying amount of the given financial asset is recognized in the income statement as a modification gain or loss.
Offsetting	i . Offsetting UBS nets financial assets and liabilities on its balance sheet if ( i ) it has the unconditional and legally enforceable right to set of f the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of UBS and its counterparties, and (ii) it intends either to settle on a net basis or to realize the asset and settle the liability simult aneously. Netted positions include, for example, certain derivatives and repurchase and reverse repurchase transactions with various counterparties, exchanges and clearing houses. In assessing whether UBS intends to either settle on a net bas is, or to real ize the asset and settle the liability simultaneously, emphasis is placed on the effectiveness of operational settlement mechanics in eliminating substantially all credit and liquidity exposure between the counterparties. This condition precludes offsettin g on the balance sheet for substantial amounts of UBS’s financial assets and liabilities, even though they may be subject to enforceable netting arrangements. For OTC derivative contracts, balance sheet offsetting is generally only permitted in circumstanc es in which a market settlement mechanism exists via an exchange o r central clearing counterparty that effectively accomplishes net settlement through a daily exchange of collateral via a cash margining process. For repurchase arrangements and securities f inancing transactions, balance sheet offsetting may be permitted only to the extent that the settlement mechanism eliminates, or results in insignificant, credit and liquidity risk, and processes the receivables and payables in a single settlement process or cycle. › Refer to Note 22 for more information
Hedge accounting	j. Hedge accounting The Group applies hedge accounting requirements of IFRS 9 , unless stated otherwise below, where the criteria for documentation and hedge effectiveness are met. If a hedge relationship no longer meets the criteria for hedge accounting, hedge accounting is discontinued. Voluntary discontinuation of hedge accounting is permitted under IAS 39 but not under IFRS 9. Fair value hedges of interest rate risk related to debt instruments The fair value change of the hedged item attributable to a hedged risk is reflected as an adjustment to the carrying amount of the hedged item, and recognized in the income statement along with the change in the fair value of the hedging instrument. Fair value hedges of portfolio interest rate risk related to loans designated under IAS 39 The fair value change of the hedged it em attributable to a hedged risk is reflected within Other financial assets measured at amortized cost or Other financial liabilities measured at amortized cost and recognized in the income statement along with the change in the fair value of the hedging i nstrument. Fair value hedges of foreign exchange risk related to debt instruments The fair value change of the hedged item attributable to a hedged risk is reflected in the measurement of the hedged item and recognized in the income statement along with t he change in the fair value of the hedging instrument. The foreign currency basis spread of cross-currency swaps designated as hedging derivatives is excluded from the designation and accounted for as a cost of hedging with amounts deferred in Other compre hensive income within Equity . These amounts are released to the income statement over the term of the hedged item. Discontinuation of fair value hedges Discontinuations for reasons other than derecognition of the hedged item result in an adjustment to the carrying amount , which is amortized to the income statement over the remaining life of the hedged item using the effective interest method. If the hedged item is derecogni z ed, the unamortized fair value adjustment or deferred cost of hedging amount is reco gnized immediately in the income statement as part of any derecognition gain or loss. Cash flow hedges of forecast transactions Fair value gains or losses associated with the effective portion of derivatives designated as cash flow hedges for cash flow repricing risk are recognized initially in Other comprehensive income within Equity and reclassified to the income statement in the periods when the hedged forecast cash flows affect profit or loss, including discontinued hedges for which forecast cash flows are expected to occur. If the forecast transactions are no longer expected to occur, the deferred gains or losses are immediatel y reclassified to the income statement . Hedges of net investments in foreign operations Gains or losses on the hedging instrument relating to the effective portion of a hedge are recognized directly in Other comprehensive income within Equity, while any g ains or losses relating to the ineffective and / or undesignated portion (for example, the interest element of a forward contract) are recognized in the income statement. Upon disposal or partial disposal of the foreign operation, the cumulative value of a ny such gains or losses recognized in Equity associated with the entity is reclassified to Other income . Interest Rate Benchmark Reform UBS can continue hedge accounting during the period of uncertainty before existing interest rate benchmarks are replace d with alternative risk-free interest rates. During this period, UBS can assume that the current benchmark rates will continue to exist, such that forecast transactions are considered highly probable and hedge relationships remain, with little or no conseq uential impact on the financial statements. Upon replacement of existing interest rate benchmark s by alternative risk-free interest rates expected in 2021 and beyond , UBS will apply the requirements of Amendments to IFRS 9 , IAS 39, IFRS 7, IFRS 4 and IFRS 16 (Interest Rate Benchmark Reform – Phase 2). › Refer to Note 1b and Note 1c for more information
Fee and commission income and expenses	3 ) Fee and commission income and expenses UBS earns fee income from the diverse range of services it provides to its clients. Fee income can be divided into tw o broad categories: fees earned from services that are provided over a certain period of time, such as management of clients’ assets, custody services and certain advisory services; and fees earned from point-in-time services, such as underwriting fees, de al - contingent merger and acquisitions (M&A) fees and brokerage fees (e.g., securities and derivative s execution and clearing). UBS recognizes fees earned on transaction-based arrangements when it has fully provided the service to the customer. Where the co ntract requires services to be provided over time, income is recognized on a systematic basis over the life of the agreement. Consideration received is allocated to the separately identifiable performance obligations in a contract. Owing to the nature of U BS’s business, contracts that include multiple performance obligations are typically those that are considered to include a series of similar performance obligations fulfilled over time with the same pattern of transfer to the client, e.g., management of c lient assets and custodial services. As a consequence, UBS is not required to apply significant judgment in allocating the consideration received across the various performance obligations. Point-in-time services are generally for a fixed price or dependent on deal size, e.g., a fixed number of basis points of trade size, where the amount of revenue is known when the performanc e obligation is met. Fixed period-in-time fees are recognized on a straight-line basis over the performance period. Custodial and asset management fees can be variable through reference to the size of the customer portfolio and are generally billed on a m onthly or quarterly basis once the customer’s portfolio size is known or known with near certainty. This is generally prior to UBS’s reporting dates and such fees are also recognized ratably over the performance period. UBS does not recognize performance fees related to management of clients’ assets or fees related to contingencies beyond UBS’s control until such uncertainties are resolved. UBS’s fees are generally earned from short-term contracts , with the majority either collected immediately or via reg ular monthly or quarterly amounts deducted directly from client s’ accounts. As a result , UBS’s contracts do not include a financing component or result in the recognition of significant receivables or prepayment assets. Furthermore, due to the short - term nature of such contracts , UBS has not capitalized any material costs to obtain or fulfil l a contract or generated any significant contract assets or liabilities. UBS acts as principal in the majority of contracts with customers, with the exception of deriv ative s execution and clearing services, resulting in fee and commission income and expense being presented gross on the face of the income statement. For derivative s execution and clearing services, UBS only records its specific fees in the income statemen t, with fees payable to other parties not recognized as an expense but instead directly offset against the associated income collected from the given client. UBS presents expenses primarily in line with their nature in the income statement, differentiatin g between expenses that are directly attributable to the satisfaction of specific performance obligations associated with the generation of revenues, which are presented within Total o perating i ncome as Fee and commission expense , and those that are relate d to personnel, general and administrative expenses, which are presented within Total operating expenses . › Refer to Note 4 for more information, including the disaggregation of revenues
Cash and cash equivalents	4 ) Cash and cash equivalents For the purpose of the statement of cash f lows, cash and cash equivalents comprise balances with an original maturity of three months or less, including cash, money market paper and balances at central and other banks.
Share-based and other deferred compensation plans	5 ) Share-based and other deferred compensation plans UBS recognizes expenses f or deferred compensation awards over the period that the employee is required to provide service to become entitled to the award. Where the service period is shortened, for example in the case of employees affected by restructuring programs or mutually agr eed termination provisions, recognition of expense is accelerated to the termination date. Where no future service is required, such as for employees who are eligible for retirement or who have met certain age and length-of-service criteria, the services a re presumed to have been received and compensation expense is recognized over the performance year or , in the case of off-cycle awards, immediately on the grant date. Share-based compensation plans Share-based compensation expense is measured by reference to the fair value of the equity instruments on the date of grant, taking into account the terms and conditions inherent in the award, including, where relevant, dividend rights, transfer restriction s in effect beyond the vesting date, market conditions, and non-vesting conditions. For equity-settled awards, the fair value is not remeasured unless the terms of the award are modified such that there is an incremental increase in value. No adjustments are made for modifications that result in a decrease in value. Any increase in fair value resulting from a modification is recognized as compensation expense, either over the remaining service period or, for vested awards, immediately . E xpense s are recogni zed, on a per-tranche basis, over the service period based on an estimate of the number of instruments expected to vest and are adjusted to reflect the actual outcomes of service or performance conditions. For equity-settled awards, forfeiture events resu lting from a breach of a non-vesting condition (i.e. , one that does not relate to a service or performance condition) do not result in an y adjustment to the share-based compensation expense. For cash-settled share-based awards, fair value is remeasured at each reporting date , so that the cumulative expense recognized equals the cash distributed. Other deferred compensation plans Compensation expense for other deferred compensation plans is recognized on a per-tranche or straight-line basis, depending o n the nature of the plan. The amount recognized is measured based on the present value of the amount expected to be paid under the plan and is remeasured at each reporting date, so that the cumulative expense recognized equals the cash or the fair value of respective financial instruments distributed. › Refer to Note 27 for more information
Post-employment benefit plans	6 ) P ost-employment benefit plans UBS sponsors various post-employment benefit plans for its employees worldwide, which include defined benefit and defined contribution pension plans, and other post-employment benefits , such as medical and life insurance benefits that are payable after the completion of employment. › Refer to Note 26 for more information Defined benefit plans Defined benefit plans specify an amount of benefit that an employee will receive, which usually depends on one or more factors , such as age, years of service and compensation. The defined benefit liability recognized in the balance sheet is the present value of the defined benefit obligation less the fair value of the plan ’s assets at the balance sheet date , with changes resulting from remeasurements recorded immediately in Other comprehensive income . If the fair value of the plan ’s assets is higher than the present value of the defined benefit obligation, the recognition of the resulting net asset is limited to the present value of economic benefits available in the form of refunds from the plan or reductions in future contributions to the plan. UBS applies the projected unit credit method to determine the present value of its defined benefit obligations, the related current service cost and, where applicable, the past service cost. These amounts, which take into account the specific features of each plan, including risk sharing between employee and employer, are calculated periodically by independent qualified actuaries. Critical accounting estimates and judgm ents The net defined benefit liability or asset at the balance sheet date and the related personnel expense depend on the expected future benefits to be provided, determined using a number of economic and demographic assumptions. A range of assumptions could be applied, and different assumptions could significantly alter the defined benefit liability or asset and pension expense recognized. The most significant assumptions include life expectancy, the discount rate, expected salary increases, pension inc reases , and interest credits on retirement savings account balances. S ensitivity analysis for reasonable possible movements in each significant assumption for UBS‘s post-employment obligations is provided within Note 2 6 . › Refer to Note 2 6 for more information Defined contribution plans A defined contribution plan pays fixed contributions into a separate entity from which post-employment and other benefits are paid. UBS has no legal or constructive obligation to pay further amounts if the plan does not hold sufficient assets to pay employees the benefits relating to employee service in the current and prior periods. Compensation expense is recognized when the employees have rendered services in exchange for contributions. This is ge nerally in the year of contribution. Prepaid contributions are recognized as an asset to the extent that a cash refund or a reduction in future payments is available.
Income taxes	7 ) Income taxes UBS is subject to the income tax laws of Switzerland and those of the non -Swiss jurisdictions in which UBS has business operations. The Group’s provision for income taxes is composed of current and deferred taxes. Current income taxes represent taxes to be paid or refunded for the current period or previous periods . Deferred taxes are recognized for temporary differences between the carrying amounts and tax bases of assets and liabilities that will result in taxable or deductible amounts in future periods and are measured using the applicable tax rates and laws that have been enacted or substantively enacted by the end of the reporting period and that will be in effect when such differences are expected to reverse . Deferred tax assets arise from a variety of sources, the most significant being: ( i ) tax losses that can be carrie d forward to be used against profits in future years ; and (ii) temporary differences that will result in deductions against profits in future years . Deferred tax assets are recognized only to the extent it is probable that sufficient taxable profits will b e available against which these differences can be used . When an entity or tax group has a history of recent losses, deferred tax assets are only recognized to the extent there are sufficient taxable temporary differences or there is convincing other evide nce that sufficient taxable profit will be available against which the unused tax losses can be utilized . Deferred tax liabilities are recognized for temporary differences between the carrying amounts of assets and liabilities in the balance sheet that ref lect the expectation that certain items will give rise to taxable income in future periods. Deferred and current tax assets and liabilities are offset when : ( i ) they arise in the same tax reporting group ; (ii) they relate to the same tax authority ; (iii) t he legal right to offset exists; and (iv) they are intended to be settled net or realized simultaneously. Current and deferred taxes are recognized as income tax benefit or expense in the income statement, except for current and deferred taxes recognized in relation to : ( i ) the acquisition of a subsidiary (for which such amounts would affect the amount of goodwill arising from the acquisition); (ii) gains and losses on the sale of treasury shares (for which the tax effects are recognized directly in Equity ); (iii) unrealized gains or losses on financial instruments that are classified at FVOCI; (iv) changes in fair value of derivative instruments designated as cash flow hedges; (v) remeasurements of defined benefit plans; or (vi) certain foreign currency tr anslations of foreign operations. Amounts relating to points (iii) through (vi) are recognized in Other comprehensive income within Equity . UBS reflects the potential effect of uncertain tax positions for which acceptance by the relevant tax authority is n ot considered probable by adjusting current or deferred taxes, as applicable, using either the most likely amount or expected value methods, depending on which method is deemed a better predictor of the basis on which and extent to which the uncertainty wi ll be resolved. Critical accounting estimates and judgments Tax laws are complex, and judgment and interpretations about the application of such laws are required when accounting for income taxes. UBS considers the performance of its businesses and the accuracy of historical forecasts and other factors in evaluatin g the recoverability of its deferred tax assets, including the remaining tax loss carry-forward period, and its assessment of expected future taxable profits in the forecast period used for recognizing deferred tax assets. Estimating future profitability and business plan forecasts is inherently subjective and is particularly sensitive to future economic, market and other conditions . Forecasts are review ed annually, but adjustments may be made at other times, if required . If recent losses have been incurred, convincing evidence is required to prove there is sufficient future profitability given the value of UBS’s deferred tax assets may be affected , with effects primarily recognized through the income statement. In addition, judgment is required to assess t he expected value of uncertain tax positions and the related probabilities, including interpretation of tax laws, the resolution of any income tax-related appeals and litigation . › Refer to Note 8 for more information
Investment in associates	8 ) Investments in associates Interests in e ntities where UBS has significant influence over the financial and operating policies of the entity but does not have control are classified as investments in associates and accounted for under the equity method o f accounting. Typically, UBS has significant influence when it holds or has the ability to hold between 20% and 50% of a company’s voting rights. Investments in associates are initially recognized at cost, and the carrying amount is increased or decreased after the date of acquisition to recognize the Group’s share of the investee’s comprehensive income and any impairment losses. The net investment in an associate is impaired if there is objective evidence of a loss event and the carrying amount of the inv estment in the associate exceeds its recoverable amount . › Refer to Note 28 for more information
Property, equipment and software	9 ) Property, equipment and software Property, equipment and software includes own-used properties, leasehold improvements, information tech nology hardware, externally purchased and internally generated software, as well as communication s and other similar equipment. Property, equipment and software is measured at cost less accumulated dep reciation and impairment losses and is reviewed at each reporting date for indication for impairment. Software development costs are capitalized only when the costs can be measured reliably and it is probable that future economic benefits will arise. Depreciation of property, equipment and software begins when they are available for use (i.e., when they are in the location and condition necessary for them to be capable of operating in the manner intended by management ) . Depreciation is calculated on a straight-line basis over an asset ‘s estimated useful life. The est imated useful economic lives of UBS‘s property, equipment and software are: – properties, excluding land: ≤ 67 years – IT hardware and communication s equipment: ≤ 7 years – other machines and equipment: ≤ 10 years – software: ≤ 10 years – leased properties a nd leasehold improvements: the shorter of the lease term or the economic life of asset (typically ≤ 20 years). Property, equipment and software are generally tested for impairment at the appropriate cash- generating unit (CGU) level, alongside goodwill and intangible assets as described in item 10 in this Note . An impairment charge is , however , only recognized for such assets if both the asset’s fair value less costs of disposal and value in use (if determi nable) are below its carrying amount . The fair value s of such asset s , other than property that has a market price, are generally determined using a replacement cost approach that reflects the amount that would be currently required by a market participant to replace the service capacity of the asset. If such assets are no longer used, they are tested individually for impairment. › Refer to Note 12 for more information
Goodwill and intangible assets	10 ) Goodwill and intangible assets Goodwill represents the future economic benefits arising from other assets acquired in a business combination that are not individually identified and recognized . Goodwill is not amortized, but is assessed for impairment at the end of each reporting period , or when indicators of impairment exist . UBS tests goodwill for impairment annually , irrespective of whether there is any indication of impairment . The impairment test is performed for each CGU to which goodwill is allocated by comparing the recoverable amount, based on its value in use, to the carrying amount of the respective CGU . An impairment charge is recognized in the income statement if the carrying amount exceeds the recoverable amount. Intangible assets include separately identifiable intangible items arising from business combinations and certain purchased trademarks and similar items. Intangible assets are recognized at cost. The cost of an intangible asset acquired in a business combination is its fair value at the date of acquisition. Intangible assets with a finite useful life are amortized using the straight-line method over their estimated useful life, generally not exceeding 20 years. In rare cases, intangible assets can have an indefinite useful life, in which case they are not amortized. At each reporting date, intangible asset s are reviewed for indications of impairment. If such indications exist, the intangible assets are analyzed to assess whether their carrying amount is fully recoverable. An impairment loss is recognized if the carrying amount exceeds the recoverable amount . Critical accounting estimates and judgments UBS‘s methodology for goodwill impairment testing is based on a model that is most sensitive to the following key assumptions: ( i ) forecasts of earnings available to shareholders in years one to three; (ii) changes in the discount rates; and (iii) changes in the long-term growth rate. Earnings available to shareholders are estimated on the basis of forecast results, which are part of the business plan approved by the BoD . The discount rates and growth rates are determined using external information, as well as considering inputs from bo th internal and external analysts and the view of management . The key assumptions used to determine the recoverable amounts of each cash-generating unit are tested for sensitivity by applying reasonably possible changes to those assumptions. › Refer to Notes 2 and 13 for more information
Provisions and contingent liabilities	11 ) Provisions and contingent liabilities Provisions are liabilities of uncertain timing or amount, and are generally recognized in accordance with IAS 37, Provisions, Contingent Lia bilities and Contingent Asset s , when : ( i ) UBS has a present obligation as a result of a past event; (ii) it is probable that an outflow of resources will be required to settle the obligation; and (iii) a reliable estimate of the amount of the obligation ca n be made. The majority of UBS’s provisions relate to litigation, regulatory and similar matters, restructuring, and employee benefits. Restructuring provisions are generally recognized as a consequence of management agreeing to materially change the scop e of the business or the manner in which it is conducted, including changes in management structure. Provisions for employee benefits relate mainly to service anniversaries and sabbatical leave, and are recognized in accordance with measurement principles set out in item 6 in this Note. In addition, UBS presents expected credit loss allowances within Provisions if they relate to a loan commitment, financial guarantee contract or a revolving revocable credit line. IAS 37 provisions are measured considering t he best estimate of the consideration required to settle the present obligation at the balance sheet date. When conditions required to recognize a provision are not met, a contingent liability is disclosed, unless the likelihood of an outflow of resources is remote . Contingent liabilities are also disclosed for possible obligations that arise from past events the existence of which will be confirmed only by uncertain future events not wholly within the control of UBS. Critical accounting estimates and judgments Recognition of provisions often involves significant judgment in assessing the existence of an obligation that results from past events and in estimating the probability, timing and amount of any outflows of resources. This is particularly the case for litigation, regulatory and similar matters, which, due to their nature, are subject to many uncertainties , making their outcome difficult to predict. The amount of any provision recognized is sensitive to the assumptions used and there could be a wide range of possible outcomes for any particular matter. Management regularly reviews all the available information regarding such matters, including legal advice, to assess whether the recognition criteria for provisions have been satisfied and to dete rmine the timing and amount of any potential outflows. › Refer to Note 18 for more information
Foreign currency translation	12 ) Foreign currency translation Transactions denominated in a foreign currency are translated into the functional currency of the reporting entity at the spot exchange rate on the date of the transaction. At the balance sheet date, all monetary assets , including those at FVOCI , and monetary liabilities denominated in foreign currency are translated into the functional currency using the closin g exchange rate. Translation differences are reported in Other net income from financial instruments m easured at fair value through profit or loss . Non-monetary items measured at historical cost are translated at the exchange rate on the date of the transa ction. Upon consolidation, assets and liabilities of foreign operations are translated into US dollars , UBS’s presentation currency, at the closing exchange rate on the balance sheet date, and income and expense items and other comprehensive income are tr anslated at the average rate for the period. The resulting foreign currency translation differences are recognized in Equity and reclassified to the income statement when UBS disposes of, partially or in its entirety, the foreign operation and UBS no longe r controls the foreign operation. Shar e capital issued, share premium and treasury shares held are translated at the historic average rate, with the difference between the historic average rate and the spot rate realized upon repayment of share capital or disposal of treasury shares reported as Share premium. Cumulative amounts recogniz ed in OCI in respect of cash flow hedges and financial assets measured at FVOCI are translated at the closing exchange r ate as of the balance sheet dates, with any translation effects adjusted through Retained earnings . › Refer to Note 3 3 for more information
Equity, treasury shares and contracts on UBS Group AG shares	13 ) Equity, treasury shares and contracts on UBS Group AG shares UBS Group AG shares held (treasury shares) UBS Group AG shares held by the Group , including those purchased as part of market-making activities, are presented in Equity as Treasury shares at their acquisition cost and are deducted from Equity until they are canceled or reissued. The difference between the proceeds from sales of treasury shares and their weighted average cost (net of tax, if any) is reported as Share premium . Non-controllin g interests If UBS has a n obligation to purchase a non-controlling interest subject to option or forward arrangements , the amounts allocated to non-controlling interests are reduced and a liability equivalent to the exercise price of the option or forward is recognized, with any difference between these two amounts recorded in Share premium. Net cash settlement contracts Contracts involving UBS Group AG shares that require net cash settlement, or provide the counterparty or UBS with a settlement option th at includes a choice of settling net in cash, are classified as derivatives held for trading .
Leasing	14 ) Leasing UBS predominantly enters into lease contracts, or contracts that include lease components, as a lessee of real estate, including offices, retail branc hes and sales offices, with a small number of IT hardware leases. UBS identifies non-lease components of a contract and accounts for them separately from lease components. When UBS is a lessee in a lease arrangement, UBS recognizes a lease liability and co rresponding right-of-use ( RoU ) asset at the commencement of the lease term when UBS acquires control of the physical use of the asset. Lease liabilities are presented within Other financial liabilities measured at amortized cost and RoU assets within Prope rty, equipment and software . The lease liability is measured based on the present value of the lease payments over the lease term, discounted using UBS’s unsecured borrowing rate , given that the rate implicit in a lease is generally not observable. Interes t expense on the lease liability is presented within Interest expense from financial instruments measured at amortized cost . The RoU asset is recorded at an amount equal to the lease liability but is adjusted for rent prepayments, initial direct costs, any costs to refurbish the leased asset and / or lease incentives received. The RoU asset is depreciated over the shorter of the lease term or the useful life of the underlying asset, with the depreciation presented within Depreciation and impairment of prope rty, equipment and software . Lease payments generally include fixed and variable payments that depend on an index (such as an inflation index). When a lease contains an extension or termination option that the Group considers reasonably certain to be exer cised, the expected rental payments or costs of termination are included within the lease payments used to generate the lease liability. UBS does not typically enter into leases with purchase options or residual value guarantees. Where UBS acts as a lessor or sub-lessor under a finance lease, a receivable is recognized in Other financial assets measured at amortized cost at an amount equal to the present value of the aggregate of the lease payments plus any unguaranteed residual value that UBS expects to re cover at the end of the lease term. Initial direct costs are also included in the initial measurement of the lease receivable. Lease payments received during the lease term are allocated as repayments of the outstanding receivable. Interest income reflects a constant periodic rate of return on UBS’s net investment using the interest rate implicit in the lease (or, for sub-leases, the rate for the head lease). UBS reviews the estimated unguaranteed residual value annually, and if the estimated residual value to be realized is less than the amount assumed at lease inception, a loss is recognized for the expected shortfall. Where UBS acts as a lessor or sub-lessor in an operating lease, UBS recognizes the operating lease income on a straight-line basis over the lease term. Lease receivables are subject to impairment requirements as set out in item 2 g in this Note . ECL on lease receivables are determined following the general impairment model within IFRS 9, Financial Instruments , without utilizing the simplified approach of always measuring impairment at the amount of lifetime ECL. Comparative policy \| Policy applicable prior to 1 January 2019 Operating lease rentals payable were recognized as an expense on a straight-line basis over the lease term, which commenc e d with control of the physical use of the property. Lease incentives were treated as a reduction of rental expense and were recognized on a consistent basis over the lease term. Operating lease expenses of USD 533 million were presented within General and administrative expenses in 2018. As at the date of adoption of IFRS 16 , UBS had USD 24 million of finance leases and accounted for them consistently with the policy applied from 1 January 2019 above. The adoption of IFRS 16 had no impact on retained earnings. › Refer to Note 1 2 and 30 for more information
UBS AG
Significant Accounting Policies [Line Items]
Basis of accounting	Basis of accounting The Financial Statements have been prepared in accordance with International Financial Reporting Standards ( IFRS ) , as issued by the International Accounting Stan dards Board ( the IASB), and are presented in US dollars ( USD ) . Disclosures marked as audited in the “ Risk, capital, liquidity and funding, and balance sheet ” section of this report form an integral part of the Financial Statements. These disclosures relate to requirements under IFRS 7, Financial Instruments: Disclosures , and IAS 1, Presentation of Financial Statements , and are not repeated in this section. T he accounting policies described in this Note have been applied consistently in all years presented unless otherwise stated in Note 1b. In addition, effective from 1 January 2019, UBS AG applies IFRS 16, Leases , which sets out the principles for the recognition, measurement, presentation and disclosure of leases . Within this Note, policies applied for periods that differ from those applied to the financial year ended 31 December 2020 are identified as “Comparative policy . ”
Critical accounting estimates and judgments	Critical accounting estimates an d judgments Preparation of these Financial Statements under IFRS requires management to apply judgment and make estimates and assumptions that affect reported amounts of assets, liabilities, income and expenses and disclosure of contingent assets and liab ilities, and may involve significant uncertainty at the time they are made. Such estimates and assumptions are based on the best available information. UBS AG regularly reassesses such estimates and assumptions, which encompass historical experience, expec tations of the future and other pertinent factors, to determine their continuing relevance based on current conditions, updating them as necessary. Changes in those estimates and assumptions may have a significant effect on the Financial Statements. Furthe r more , actual results may differ significantly from UBS AG ’s estimates, which could result in significant losses to UBS AG , beyond what was anticipated or provided for. The following areas contain estimation uncertainty or require critical judgment and ha ve a significant effect on amounts recognized in the Financial Statements: – expected credit loss measurement (refer to item 2g in this Note and to Note 2 0 ); – fair value measurement (refer to item 2f in this Note and to Note 2 1 ); – income taxes (refer to item 7 in this Note and to Note 8); – provisions and contingent liabilities (refer to item 11 in this Note and to Note 18 ) ; – post-employment benefit plans (refer to item 6 in this Note and to Note 2 6 ); – goodwill (refer to item 10 in this Note and to Note 1 3 ); and – c onsolidation of structured entities (refer to item 1 in this Note and to Note 28 ) .
Consolidation	1) Consolidation The Financial Statements comprise the financial statements of UBS AG and its subsidiaries, presented as a single economic entity ; intercompany transaction s and balances have been eliminated. UBS AG consolidates all entities that it controls, including structured entities (SEs), which is the case when it has : (i) power over the relevant activities of the entity ; (ii) exposure to an entity ‘s variable returns ; and (iii) the ability to use its power to affect its own returns. Consideration is given to all facts and circumstances to determine whether UBS AG has power over another entity , i.e. , the current ability to direct the relevant activities of an entity whe n decisions about those activities need to be made. Subsidiaries, including SEs, are consolidated from the date when control is g ained and deconsolidated from the date when control ceases. Control, or the lack thereof, is reassessed if facts and circumsta nces indicate that there is a change to one or more elements required to establish that control is present. Business combinations are accounted for using the acquisition method. The amount of non-controlling interest is measured at the non-controlling inte rest’s proportionate share of the acquiree’s identifiable net assets. › Refer to Note 28 for more information Critical accounting estimates and judgments Each individual entity is assessed for consolidation in line with the aforementioned consolidation principles. The assessment of control can be complex and require s the use of significant judgment , in particular in determining whether UBS AG has power over the entity . As the nature and extent of UBS AG ’s involvement is uniqu e for each entity, there is no uniform consolidation outcome by entity. Certain entities within a class may be consolidated while others may not. When carrying out the consolidation assessment, judgment is exercised considering all the relevant facts and c ircumstances, including the nature and activities of the investee, as well as the substance of voting and similar rights. › Refer to Note 28 for more information
Financial instruments	2 ) Financial instruments a. Recognition UBS AG recognizes financial instruments when it becomes a party to contractual provisions of an instrument. UBS AG applies settlement date accounting to all standard purchases and sales of non-derivative financial instruments . In transactions wh ere UBS AG acts a s a transferee, to the extent such financial asset transfer does not qualify for derecognition by the t rans feror, UBS AG does not recogniz e the transferred instrument as its asset. UBS AG also acts in a fiduciary capacity, which results in it holding or placing assets on behalf of individuals, trusts, retirement benefit plans and other institutions. Unless thes e items meet the definition of an asset and the recognition criteria are satisfied, such assets are not recognized on UBS AG ’s balance sheet and the related income is excluded from the F inancial S tatements. Client cash balances associated with derivatives clearing and execution services are not recognized on the balance sheet if, through contractual agreement, regulation or practice, UBS AG neither obtains benefits from nor controls such cash balances. b. Classification, measurement and presentation Financ ial assets All financial instruments are on initial recognition measured at fair value and classified as measured at amortized cost, fair value through other comprehensive income (FVOCI) or fair value through profit or loss (FVTPL) . For financial instrumen ts subsequently measured at amortized cost or FVOCI , the initial fair value is adjusted for directly attributable transaction costs. Where the contractual terms of a debt instrument result in cash flows that are solely payments of principal and interest (SPPI) on the principal amount outstanding, the debt instrument is classified as measured at amortized cost if it is held within a business model that has an objective to hold financial assets to collect contractual cash flows , or at FVOCI if i t is held within a business model with the objective being achieved by both collecting contractual cash flows and selling financial assets . All other financial assets are measured at FVTPL , including those held for trading or those managed on a fair value basis, except for derivatives designated in a hedge relationship, in which case hedge accounting requirements apply (refer to item 2 j in this N ote for more information) . Business model assessment and contractual cash flow characteristics UBS AG determines the nature of a business model by considering the way financial assets are managed to achieve a particular business objective. In assessing whether the contractual cash flows are SPPI, UBS AG considers whether the contractual terms of the financial asset conta in a term that could change the timing or amount of contractual cash flows arising over the life of the instrument . Financial liabilities Financial liabilities measured at amortized cost Financial liabilities measured at amortized cost include Debt issued measured at amortized cost and Funding from UBS Group AG and its subsidiaries , which constitute obligations of UBS AG arising from funding it has received from UBS Group AG or its subsidiaries, which are not within the UBS AG’s scope of consolidation. The latter includes contingent capital instruments issued to UBS Group AG and its subsidiaries contain ing contractual provisions under which the principal amounts would be written down or converted into equity upon either a specified common equity tier 1 ( CET 1 ) ratio breach or a determination by the Swiss Financial Market Supervisory Authority ( FINMA ) that a viability event has occurred. Such contractual provisions are not derivatives , as the underlying is deemed to be a non-financial variable specific to a pa rty to the contract. Where there is a legal bail-in mechanism for write-down or conversion into equity (as is the case, for instance, with senior unsecured debt issued by UBS AG that is subject to write-down or conversion under resolution authority grante d to FINMA under Swiss law), the amortized cost accounting treatment applied to these instruments is not affected. If the debt were to be written down or converted into equity in a future period, it would be partially or fully derecognized, with the diff erence between its carrying amount and the fair value of any equity issued recognized in the income statement. A gain or loss is recognized in Other income when debt issued is subsequently repurchased for market-making or other activities. A subsequent sal e of own bonds in the market is treated as a reissuance of debt. Financial liabilities measured at fair value through profit or loss UBS AG designates certain issued debt instruments as financial liabilities at fair value through profit or loss, on the ba sis that such financial instruments include embedded derivatives and / or are managed on a fair value basis (refer to the table below for more information), in which case bifurcation of the embedded derivative component is not required. Financial instrumen ts including embedded derivatives arise predominantly from the issuance of certain structured debt instruments. Measurement and presentation After initial recognition, UBS AG classifies, measures and presents its financial assets and liabilities in accor dance with IFRS 9, as described in the table on the following pages. Classification, measurement and presentation of financial assets Financial assets c lassification Significant items included Measurement and presentation Measured at amortized cost This classification includes: – cash and balances at central banks ; – loans and advances to banks ; – cash collateral receivables on securities borrowed ; – receivables on reverse repurchase agreements ; – cash collateral receivables on derivative instruments ; – residential and commercial mortgages ; – corporate loans ; – secured loans, including Lombard loans, and unsecured loans ; – loans to financial advisors ; and – debt securities held as high-quality liquid assets (HQLA) . Measured at amortized cost using the effective interest method less allowances for expected credit losses (ECL) (refer to items 2 d and 2 g in this Note for more information). The following items are recognized in the income statement: – interest income, which is accounted for in accordance with item 2 d in this Note ; – ECL and reversals ; and – f oreign exchange translation gains and losse s . When the financial asset at amortized cost is derecognized, the gain or loss is recognized in the income statement. For a mounts arising from settlement of certain derivatives, refer to the next page. Measured at FVOCI Debt instruments measured at FVOCI This classification primarily includes debt securities and certain asset-backed securities held as HQLA. Measured at fair value , with unrealized gains and losses reported in Other comprehensive income, net of applicable income taxes, until such investments are derecognized. Upon derecognition, any accumulated balances in Other comprehensive income are reclassified to the income statement and reported within Other income. The following items , which are determined on the same basis as for financial assets measured at amortized cost , are recognized in the income statement: – interest income, which is accounted for in accordance with item 2 d in this Note ; – ECL and reversals ; and – foreign exchange translation gains and losses. Classification, measurement and presentation of financial assets Financial assets c lassification Significant items included Measurement and presentation Measured at FVTPL Held for trading Financial assets held for trading include: – all derivatives with a positive replacement value, except those that are designated and effective hedging instruments; and – other financial assets acquired principally for the purpose of selling or repurchasing in the near term, or that are part of a portfolio of identified financial instruments that are managed together and for which there is evidence of a recent actual pattern of short-term profit taking. Included in this category are debt instruments (including those in the form of securities, money market paper , and traded corporate and bank loans) and equity instruments. Measured at fair value , with changes recognized in the income statement . Derivative assets (including derivatives that are designated and effective hedging instruments) are generally presented as Derivative financial instruments , except those exchange-traded and OTC-cleared derivatives that are considered to be settled on a daily basis or in substance net settled on a daily basis, which are presented within Cash collateral receivables on derivative instruments. Changes in fair value, initial transaction costs , dividends and gains and losses arising on disposal or redemption are recognized in Other net income from financial instruments measured at fair value through profit or loss , 1 except interest income on instruments other than derivatives (refer to item 2d in this Note), interest on derivatives de signated as hedging instruments in hedges of interest rate risk and forward points on certain short - and long -duration foreign exchange contracts acting as economic hedges , which are reported in Net interest income. Changes in the fair value of derivatives that are designated and effective hedging instruments are presented either in the income statement or O ther comprehensive income , depending on the type of hedge relationship (refer to item 2 j in this Note for more information). Mandatorily measured at FVTPL – Other This classification includes financial asset s mandatorily measured at FVTPL that are not held for trading , as follows : – c ertain structured loans, certain commercial loans, receivables under reverse repurchase and cash collateral on securitie s borrowing agreements that are managed on a fair value basis ; – loans managed on a fair value basis , including those hedged with credit derivatives ; – c ertain debt securities held as HQLA and managed on a fair value basis ; – c ertain investment fund holdings and assets held to hedge delivery obligations related to cash-settled employee compensation plans ; – b rokerage receivables, for which contractual cash flows do not meet the SPPI criterion because the aggregate balance is accounted for as a single unit of ac count, with interest being calculated on the individual components ; – a uction rate securities, for which contractual cash flows do not meet the SPPI criterion because interest may be reset at rates that contain leverage ; – e quity instruments ; and – a ssets held u nder unit-linked investment contracts . 1 E ffective from 1 January 2019, th is line item includes dividends (prior to 1 January 2019, dividends were included within Net interest income ), intermediation income arising from certain client-driven Global Wealth Management and Personal & Corporate Banking financial transactions, foreign currency translation effects and income and expenses from exposures to precious metals . Classi fication, measurement and presentation of financial liabilities Financial liabilities c lassification Significant items included Measurement and presentation Measured at amortized cost This classification includes: – demand and time deposits; – retail savings / deposits; – amounts payable under repurchase agreements; – cash collateral on securities lent; – non-structured fixed-rate bonds; – subordinated debt; – certificates of deposit and covered bonds; – obligations against funding from UBS Group AG and its su bsidiaries; and – cash collateral payables on derivative instruments. Measured at amortized cost using the effective interest method. When the financial liability at amortized cost is derecognized, the gain or loss is recognized in the income statement. Measured at fair value through profit or loss Held for trading Financial liabilities held for trading include: – all derivatives with a negative replacement value (including certain loan commitments) , except those that are designated and effective hedging in struments; and – obligations to deliver financial instruments, such as debt and equity instruments, that UBS AG has sold to third parties but does not own (short positions). Measurement and presentation of financial liabilities classified at FVTPL follow the same principles as for financial assets classified at FVTPL, except that the amount of change in the fair value of the financial liability designated at FVTPL that is attributable to changes in UBS AG ’s own credit risk is presented in O ther comprehensive income directly within R etained earnings and is never reclassified to the income statement . Derivative liabilities (including derivatives that are designated and effective hedging instruments) are ge nerally presented as Derivative financial instruments , except those exchange-traded and OTC-cleared derivatives that are considered to be settled on a daily basis or in substance net settled on a daily basis, which are presented within Cash collateral paya bles on derivative instruments. Designated at FVTPL UBS AG designate s at FVTPL the following financial liabilities: – issued hybrid debt instruments that primarily include equity-linked, credit-linked and rates-linked bonds or notes ; – i ssued debt instruments managed on a fair value basis ; – c ertain payables under repurchase agreements and cash collateral on securities lending agreements that are managed in conjunction with associated reverse repurchase agreements and cash collateral on securities bor rowed ; – a mounts due under unit-linked investment contracts whose cash flows are linked to financial assets measured at FVTPL and eliminate an accounting mismatch ; and – b rokerage payables, which arise in conjunction with brokerage receivables and are measured at FVTPL to achieve measurement consistency .
Loan commitments	c. Loan commitments and financial guarantees Loan commitments are arrangements to provide credit under defined terms and conditions. Irrevocable loan commitments are classified as: (i) derivative loan commitments measured at fair value through profit or loss; (ii) loan commitments designated at fair value through profit or loss; or (iii) loan commitments not measured at fair value.
Financial guarantee contracts	Financial guarantee contracts are contracts that require UBS AG to make specified payments to reimburse the holder for an incurred loss because a specified debtor fails to make payments when due in accordance with the terms of a specified debt instrument.
Interest income and expense	d . Interest income and expense Interest income and expense are recognized in the income statement based on the effective interest method . When calculating the effective int erest rate (EIR) for financial instruments (other than credit-impaired financial instruments), UBS AG estimates future cash flows considering all contractual terms of the instrument, but not expected credit losses, with the EIR applied to the gross carryin g amount of the financial asset or the amortized cost of a financial liability. However, when a financial asset becomes credit-impaired after initial recognition, interest income is determined by applying the EIR to the amortized cost of the instrument, wh ich represents the gross carrying amount adjusted for any credit loss allowance. Upfront fees, including fees on loan commitments not measured at fair value where a loan is expected to be issued, and direct costs are included within the initial measuremen t of a financial instrument measured at amortized cost or FVOCI and recognized over the expected life of the instrument as part of its EIR. Fees related to loan commitments where no loan is expected to be issued, as well as loan syndication fees where UBS AG does not retain a portion of the syndicated loan or where UBS AG does retain a portion of the syndicated loan at the same effective yield for comparable risk as other participants, are included in Net fee and commission income and either recognized over the life of the commitment or when syndication occurs . › Refer to item 3 in this Note for more information Interest income on financial assets, excluding derivatives, is included in interest income when positive and in i nterest expense when negative . Simi larly, interest expense on financial liabilities, excluding derivatives, is included in i nterest expense , except when interest rates are negative, in which case it is included in i nterest income . › Refer to item 2 b in this Note and Note 3 for more information
Derecognition	e . Derecognition Financial assets UBS AG derecognizes a financial asset, or a portion of a financial asset, when the contractual rights to the cash flows from the financial asset expire, or UBS AG has either (i) transferred the contractual right s to receive the cash flows from the asset, or (ii) retained the contractual rights to receive the cash flows of that asset, but assumed a contractual obligation to pay the cash flows to one or more entities , subject to certain criteria. Transferred financial assets are derecognized if the purchaser has received substantially all the risks and rewards of the asset or a significant part of the risks and rewards combined with a practical ability to sell or pled ge the asset. Where financial assets have been pledged as collateral or in similar arrangements, they are considered to have been transferred if the counterparty has received the contractual right s to the cash flows of the pledged assets, as may be evidenc ed by , for example, the counterparty’s right to sell or repledge the assets. In transfers where control over the financial asset is retained, UBS AG continues to recognize the asset to the extent of its continuing involvement, determined by the extent to w hich it is exposed to changes in the value of the transferred asset following the transfer. Certain over-the-counter (OTC) derivative contracts and most exchange-traded futures and optio n contracts cleared through central cl earing counterpartie s and exchanges are considered to be settled on a daily basis , as the payment or receipt of variation margin on a daily basis represents legal or economic settlement, which results in derecognition of the associated derivatives . › Refer to item 2i in this Note, Note 22 and Note 23 for more information Financial liabilities UBS AG derecognizes a financial liability from its balance sheet when it is extinguished ; i.e., when the obligation specified in the contract is discharged, canceled or expire s . When an existing financial liability is exchanged for a new one from the same lender on substantially different terms, or the terms of an existing liability are substantially modified, the original liability is derecognized and a new liability recognized with any difference in the respective carrying amounts recognized in the income statement.
Fair value of financial instruments	f . Fair value of financial instruments UBS AG accounts for a significant portion of its assets and liabilities at fair value. Fair value is the price on the measurement date that would be received for the sale of an asset or paid to transfer a liability in an orderly transaction between market partici pants in the principal market, or in the most advantageous market in the absence of a principal market. › Refer to Note 21 for more information Critical accounting estimates and judgments The use of valuation techniques, modeling assumptions and estimates of unobservable market inputs in the fair valuation of financial instruments require s significant judgment and could affect the amount of gain or loss recorded for a particular position. Valuation techniques that rely more heavily on unobservable inputs and sophisticated models inherently require a higher level of judgment and may require adjustment to reflect factors that market participants would consider in estimating fair value, such as close-out costs, which are presented in Note 2 1 d. UBS AG ‘ s governance framework over fair value measurement is described in Note 2 1 b , and UBS AG provides a sensitivity analysis of the estimated effects arising from changing significant unobservable inputs in Level 3 financial instruments to reasonably possible alternative assumptions within Note 2 1 g. › Refer to Note 21 for more inf ormation
Allowances and provisions for expected credit losses	g . Allowances and provisions for expected credit losses Expected credit losses (ECL) are recognized for financial assets measured at amortized cost, financial assets measured at FVOCI, fee and lease receivables, financial guarantees and loan comm itments not measured at fair value . ECL are also recognized on the undrawn portion of revolving revocable credit lines, which include UBS AG ’s credit card limits and master credit facilities, and are referred to by UBS AG as “other credit lines.” Though these other credit lines are revocable at any time , UBS AG is exposed to credit risk because the borrower has the ability to draw down funds before UBS AG can take credit risk mitigation actions. Recognition of expected credit losses ECL are recognized on the following basis: – Stage 1 instruments: Maximum 12-month ECL are recognized from initial recognition, reflecting the portion of lifetime cash shortfalls that would result if a default occurs in the 12 months after the reporting date, weighted by the ris k of a default occurring. – Stage 2 instruments: Lifetime ECL are recognized if a significant increase in credit risk (SICR) is observed subsequent to the instrument’s initial recognition, reflecting lifetime cash shortfalls that would result from all possi ble default events over the expected life of a financial instrument, weighted by the risk of a default occurring. When an SICR is no longer observed, the instrument will move back to stage 1. – Stage 3 instruments: Lifetime ECL are always recognized for cred it-impaired financial instruments, as determined by the occurrence of one or more loss events, by estimating expected cash flows based on a chosen recovery strategy. Credit-impaired exposures may include positions for which no allowance has been recognized , for example because they are expected to be fully recoverable through collateral held. – Changes in lifetime ECL since initial recognition are also recognized for assets that are purchased or originated credit-impaired (POCI). POCI financial instruments include those that are purchased at a deep discount or newly originated with a defaulted co unterparty ; they remain a separate category until derecognition. All or part of a financial asset is written off if it is deemed uncollectible or forgiven. Write-offs reduce the principal amount of a claim and are charged against related allowances for credit losses. Recoveries , in part or in full, of amounts previously written off are generally credited to Credit loss (expense) / release . ECL are recognized in the income statement in Credit loss (expense) / release . A corresponding ECL allowance is repo rted as a decrease in the carrying amount of financial assets measured at amortized cost on the balance sheet. For financial assets that are FVOCI, the carrying amount is not reduced, but an accumulated amount is recognized in Other comprehensive income . F or off-balance sheet financial instruments and other credit lines, provisions for ECL are presented in Provisions . Default and credit impairment UBS AG applies a single definition of default for credit risk management purposes, regulatory reporting and ECL , with a counterparty classified as defaulted based on quantitative and qualitative criteria. › Refer to ‘’Credit policies for distressed assets’’ in the ‘’Risk management and control’’ section of this report for more information Measurement of expected cre dit losses IFRS 9 ECL reflect an unbiased, probability-weighted estimate based on loss expectations resulting from default events. The method used to calculate ECL applies the following principal factors: probability of default (PD), loss given default (LG D) and exposure at default (EAD ). Parameters are generally determined on an individual financial asset level. Based on the materiality of the portfolio, for credit card exposures and personal account overdrafts in Switzerland, a portfolio approach is appli ed that derives an average PD and LGD for the entire portfolio. PDs and LGDs used in the ECL calculation are point-in-time (PIT)-based for key portfolios and consider both current conditions and expected cyclical changes. For material portfolios, PD s and L GD s are determined for different scenarios, whereas EAD projections are treated as scenario independent. For the purpose of determining the ECL-relevant parameters, UBS AG leverages its Pillar 1 internal ratings-based (IRB) models that are also used in determining expected loss (EL) and risk-weighted assets under the Basel III framework and Pillar 2 stress loss models. Adjustments have been made to these models and IFRS 9-related models have been developed that consider the complexity, structure and risk profile of relevant portfolios and take account of the fact that PDs and LGDs used in the ECL calculation are PIT-based, as opposed to the corresponding Basel III through-the-cycle (TTC) parameters. All models that are relevant for measuring expected cred it losses are subject to UBS ’ s model validation and oversight processes. Probability of default: PD represents the like lihood of a default over a specified time period. A 12-month PD represents the likelihood of default determined for the next 12 months and a lifetime PD represents the probability of default over the remaining lifetime of the instrument. PIT PDs are derive d from TTC PDs and scenario forecasts. The modeling is region-, industry- and client segment-specific and considers both macroeconomic scenario dependencies and client-idiosyncratic information. Exposure at default: EAD represents an estimate of the exposu re to credit risk at the time of a potential default occurring, considering expected repayments, interest payments and accruals, discounted at the EIR. Future drawdowns on facilities are considered through a credit conversion factor (CCF) that is reflectiv e of historical drawdown and default patterns and the characteristics of the respective portfolios. Loss given default: LGD represents an estimate of the loss at the time of a potential default occurring , taking into account expected future cash flows from collateral and other credit enhancements, or expected payouts from bankruptcy proceedings for unsecured claims and, where applicable, time to realization of collateral and the seniority of claims. The LGD is commonly expressed as a percentage of the EAD. Estimation of expected credit losses Number of scenarios and estimation of scenario weights The determination of the probability-weighted ECL requires evaluating a range of diverse and relevant future economic conditions, especially with a view to modeling the non-linear effect of assumptions about macroeconomic factors on the estimate. To accom modate this requirement, UBS AG uses different economic scenarios in the ECL calculation . Each scenario is represented by a specific scenario narrative, which is relevant considering the exposure of key portfolios to economic risks, and for which a set of consistent macroeconomic variables is determined. An econometric model is used to provide an input into the scenario weight assessment process giving a first indication of the probability that the GDP forecast used for each scenario would materialize, if h istorically observed deviations of GDP growth from trend growth were representative. As such historical analyses of GDP development do not include an assessment of the underlying economic or political causes, management positions the model output into the context of current conditions and future expectations and applies material judgment in determining the final scenario weights. The determined weights constitute the probabilities that the respective set of macroeconomic conditions will occur and not that the chosen particular narratives with the related macroeconomic variables will materialize. Macroeconomic and other factors The range of macroeconomic, market and other factors that is modeled as part of the scenario determination is wide, and historical information is used to support the identification of the key factors. As the forecast horizon increases, the availability of information decreases, requiring an increase in judgment. For cycle-sensitive PD and LGD determination purposes, UBS AG projects th e relevant economic factors for a period of three years before reverting, over a specified period, to a cycle-neutral PD and LGD for longer-term projections. Factors relevant for ECL calculation vary by type of exposure . Regional and client - segment charac teristics are generally taken into account, with specific focus on Switzerland and the US , considering UBS AG ’s key ECL-relevant portfolios. For UBS AG , the following forward-looking macroeconomic variables represent the most relevant factors for ECL calcu lation: – GDP growth rates, given their significant effect on borrowers’ performance; – unemployment rates, given their significant effect on private clients’ ability to meet contractual obligations; – house price indices, given their significant effect on mo rtgage collateral valuations; – interest rates, given their significant effect on counterparties’ abilities to service debt; – consumer price indices, given their overall relevance for companies’ performance, private clients’ purchasing power and economic st ability; and – equity indices, given that they are an important factor in our corporate rating tools. Scenario generation, review process and governance A team of economists, who are part of Group Risk Control, develop the forward - looking macroeconomic assumptions with involv ement from a broad range of experts . The scenarios, their weight and the key macroeconomic and other factors are subject to a critical assessment by the Scenario and Operating Committee s , which include senior management from Group Risk and Group Finance . Important aspects for the review include whether there may be particular credit risk concerns that may not be capable of being addressed systematically and require post-model adjustments for stage allocation an d ECL allowance . The Group Model Governance Board , as the highest authority under UBS AG ’s model governance framework , ratifies the decisions taken by the Operating Committee. › Refer to Note 20 for more information ECL measurement period The period for which lifetime ECL are determined is based on the maximum contractual period that UBS AG is exposed to credit risk, taking into account contractual extension, termination and prepayment options. For irrevocable loan commitments and financial guarantee contracts, the measurement period represents the maximum contractual period for which UBS AG has an obligation to extend credit. Additionally, some financial instruments include both an on-demand loan and a revocable undrawn commitment, where the contractual cancelation right does not limit UBS AG ’s exposure to credit risk to the contractu al notice period, as the client has the ability to draw down funds before UBS AG can take risk-mitigating actions. In such cases, UBS AG is required to estimate the period over which it is exposed to credit risk. This applies to UBS AG ’s credit card limits , which do not have a defined contractual maturity date, are callable on demand and where the drawn and undrawn components are managed as one exposure. The exposure arising from UBS AG ’s credit card limits is not significant and is managed at a portfolio l evel, with credit actions triggered when balances are past due. An ECL measurement period of seven years is applied for credit card limits, capped at 12 months for stage 1 balances, as a proxy for the period that UBS AG is exposed to credit risk. Customary master credit agreements in the Swiss corporate market also include on-demand loans and revocable undrawn commitments. For smaller commercial facilities , a risk-based monitoring (RbM) approach is in place that highlights negative trends as risk events, at an individual facility level, based on a combination of continuously updated risk indicators. The risk events trigger additional credit reviews by a risk officer, enabling informed credit decisions to be taken. Larger corporate facilities are not subject to RbM, but are reviewed at least annually through a formal credit review. UBS AG has assessed these credit risk management practices and considers both the RbM approach and formal credit review s as substantive credit reviews resulting in a re-origination of the given facility . Following this, a 12 - month measurement period from the reporting date is used for both types of facilities as an appropriate proxy of the period over which UBS AG is exposed to credit risk, with 12 months also used as a look-back per iod for assessing SICR, always from the respective reporting date. Significant increase in credit risk Financial instruments subject to ECL are monitored on an ongoing basis. To determine whether the recognition of a maximum 12-month ECL continues to be a ppropriate, an assess ment is made as to whether an SICR has occurred since initial recognition of the financial instrument , applying both quantitative and qualitative factors. Primarily, UBS AG assesses changes in an instrum ent’s risk of default on a quantitative basis by comparing the annualized forward-looking and scenario-weighted lifetime PD of an instrument determined at two different dates: – at the reporting date; and – at inception of the instrument. If, based on UBS AG ’s quantitative modeling, an increase exceeds a set threshold, an SICR is deemed to have occurred and the instrument is transferred to stage 2 with lifetime ECL recognized. The threshold applied varies depending on the original credit quality of the borrow er , with a higher SICR threshold set for those instruments with a low PD at inception. The SICR assessment based on PD changes is made at an individual financial asset level. A high-level overview of the SICR trigger , which is a multiple of the annualized remaining lifetime PIT PD expressed in rating downgrades , is provided in the “SICR thresholds” table below. The actual SICR thresholds applied are defined on a more granular level by interpolating between the values shown in the table below. SICR threshold s Internal rating at origination of the instrument Rating downgrades / SICR trigger 0–3 3 4–8 2 9–13 1 › Refer to the “ Risk management and control ” section of this report for more details about UBS AG ’s internal grading system Irrespective of the SICR assessment based on default probabilities, credit risk is generally deemed to have significantly increased for an instrument if the contractual payments are more than 30 days past due. For certain less material portfolios, specifically the Swiss credi t card portfolio , the 30-day past due criterion is used as the primary indicator of an SICR. Where instruments are transferred to stage 2 due to the 30-day past due criterion, a minimum period of six months is applied before a transfer back to stage 1 can be triggered. For instruments in Personal & Corporate Banking and Global Wealth Management Region Switzerland that are between 90 and 180 days past due but have not been reclassified to stage 3, a one-year period is applied before a transfer back to stage 1 can be triggered. Additionally, based on individual counterparty-specific indicators, external market indicators of credit risk or general economic conditions, counterparties may be moved to a watch list, which is used as a secondary qualitative indicato r for an SICR. Exception management is further applied, allowing for individual and collective adjustments on exposures sharing the same credit risk characteristics to take account of specific situations that are not otherwise fully reflected. In general, the overall SICR determination process does not apply to Lombard loans, securities financing transactions and certain other asset-based lending transactions, because of the risk management practices adopted, including daily monitoring processes with stric t margining. If margin calls are not satisfied, a position is closed out and classified as a stage 3 position. In exceptional cases, an individual adjustment and a transfer into stage 2 may be made to take account of specific facts. Credit risk officers are responsible for the i dentification of an SICR , which for accounting purposes is in some respects different from internal credit risk management processes . This difference mainly arises because ECL accounting requirements are instrument-specific, such that a borrower can have multiple exposures allocated to different stages, and maturing loans i n stag e 2 will migrate to stage 1 upon renewal irrespective of the actual credit risk at that time. Under a risk- based approach, a holistic counterparty credit assessment and the absolute level of risk at any given date will determine what risk - mitigating action s may be warranted. › Refer to the “ Risk management and control ” section of this report for more information Critical accounting estimates and judgments The calculation of ECL requires management to apply significant judgment and make estimat es and assumptions that can result in significant changes to the timing and amount of ECL recognized. Determination of a significant increase in credit risk IFRS 9 does not include a definition of what constitutes an SICR , with UBS AG ’s assessment consi dering qualitative and quantitative criteria. An IFRS 9 O perating C ommittee has been established to review and challenge the SICR results. Scenarios, scenario weights and macroeconomic variables ECL reflect an unbiased and probability-weighted amount, which UBS AG determines by evaluating a range of possible outcomes. Management selects forward-looking scenarios which include relevant macroeconomic variables and management’s assumptions around future economic conditions. An IFRS 9 S cenario C ommittee, in addition to the O perating C ommittee, is in place to derive , review and challenge the scenario selection and weights as well as to determine whether any additional post-model adjustments are required that may significantly affect E CL . ECL measurement period Lifetime ECL are generally determined based upon the contractual maturity of the transaction, which significantly affects ECL. For credit card limits and Swiss callable master credit facilities, judgment is required , as UBS AG must determine the period over which it is exposed to credit risk. A seven-year period is applied for credit card limits, capped at 12 months for stage 1 positions, and a 12-month period applied for master credit facilities. Modeling and post-model adjus tments A number of complex models have been developed or modified to calculate ECL, with additional post-model adjustments required which may significantly affect ECL. The models are governed by UBS AG ’s model validation controls and approved by the Group Model Governance Board (the GMGB). The post-model adjustments are approved by the IFRS 9 O perating C ommittee and endorsed by the GMGB. UBS AG provides a sensitivity analysis covering key macroeconomic variables , scenario weights and SICR trigger points on ECL measurement within Note 2 0f . › Refer to Note 2 0 for more information
Restructured and modified financial assets	h . Restructured and modified financial assets When payment default is expected or where default has already occurred, UBS AG may grant concessions to borrowers in financial difficulties that it wo uld not consider in the normal course of its business, such as preferential interest rates, extension of maturity, modifying the schedule of repayments, debt / equity swap, subordination , etc . When a concession or forbearance measure is granted, each case is considered individually and the exposure is generally classified as being in default. Forbearance classification will remain until the loan is collected or written off, non-preferential conditions s uperseding preferential conditio ns are granted or until the counterparty has recovered and the preferential conditions no longer exceed UBS AG ’s risk tolerance. Modifications result in an alteration of future contractual cash flows and can occur within UBS AG ’s normal risk tolerance or a s part of a credit restructuring where a counterparty is in financial difficulties. A restructuring or modification of a financial asset could lead to a substantial change in the terms and conditions, resulting in the original financial asset being derecog nized and a new financial asset being recognized. Where the modification does not result in a derecognition, any difference between the modified contractual cash flows discounted at the original EIR and the existing gross carrying amount of the given finan cial asset is recognized in the income statement as a modification gain or loss.
Offsetting	i. Offsetting UBS AG nets financial assets and liabilities on its balance sheet if (i) it has the unconditional and legally enforceable right to set off the recognized amount s, both in the normal course of business and in the event of default, bankruptcy or insolvency of UBS AG and its counterparties, and (ii) it intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. Netted pos itions include, for example, certain derivatives and repurchase and reverse repurchase transactions with various counterparties, exchanges and clearing houses. In assessing whether UBS AG intends to either settle on a net bas is, or to realize the asset and settle the liability simultaneously, emphasis is placed on the effectiveness of operational settlement mechanics in eliminating substantially all credit and liquidity exposure between the counterparties. This condition precludes offsetting on the balance sheet for substantial amounts of UBS AG ’s financial assets and liabilities, even though they may be subject to enforceable netting arrangements. For OTC derivative contracts, balance sheet offsetting is generally only permitted in circumstances in which a market settlement mechanism exists via an exchange o r central clearing counterparty that effectively accomplishes net settlement through a daily exchange of collateral via a cash margining process. For repurchase arrangements and securities financing trans actions, balance sheet offsetting may be permitted only to the extent that the settlement mechanism eliminates, or results in insignificant, credit and liquidity risk, and processes the receivables and payables in a single settlement process or cycle. › Refe r to Note 22 for more information
Hedge accounting	j. Hedge accounting UBS AG applies hedge accounting requirements of IFRS 9 , unless stated otherwise below, where the criteria for documentation and hedge effectiveness are met. If a hedge relationship no longer meets the criteria for hedge accounting, hedge accounting is discontinued. Voluntary discontinuation of hedge accounting is permitted under IAS 39 but not under IFRS 9. Fair value hedges of interest rate risk related to debt instruments The fair value change of the hedged item attributable to a hedged risk is reflected as an adjustment to the carrying amount of the hedged item, and recognized in the income statement along with the change in the fair value of the hedging instrument. Fair value hedges of portfolio interest rate risk related to loa ns designated under IAS 39 The fair value change of the hedged item attributable to a hedged risk is reflected within Other financial assets measured at amortized cost or Other financial liabilities measured at amortized cost and recognized in the income s tatement along with the change in the fair value of the hedging instrument. Fair value hedges of foreign exchange risk related to debt instruments The fair value change of the hedged item attributable to a hedged risk is reflected in the measurement of th e hedged item and recognized in the income statement along with the change in the fair value of the hedging instrument. The foreign currency basis spread of cross-currency swaps designated as hedging derivatives is excluded from the designation and account ed for as a cost of hedging with amounts deferred in Other comprehensive income within Equity . These amounts are released to the income statement over the term of the hedged item. Discontinuation of fair value hedges Discontinuations for reasons other than derecognition of the hedged item result in an adjustment to the carrying amount , which is amortized to the income statement over the remaining life of the hedged item using the effective interest method. If the hedged item is derecogni z ed, the unamortized fair value adjustment or deferred cost of hedging amount is recognized immediately in the income statement as part of any derecognition gain or loss. Cash flow hedges of forecast transactions Fair value gains or losses associated with the effective portio n of derivatives designated as cash flow hedges for cash flow repricing risk are recognized initially in Other comprehensive income within Equity and reclassified to the income statement in the periods when the hedged forecast cash flows affect profit or l oss, including discontinued hedges for which forecast cash flows are expected to occur. If the forecast transactions are no longer expected to occur, the deferred gains or losses are immediately reclassified to the income statement . Hedges of net investments in foreign operations Gains or losses on the hedging instrument relating to the effective portion of a hedge are recognized directly in Other comprehensive income within Equity, while any gains or losses relating to the ineffective and / or undesignate d portion (for example, the interest element of a forward contract) are recognized in the income statement. Upon disposal or partial disposal of the foreign operation, the cumulative value of any such gains or losses recognized in Equity associated with th e entity is reclassified to Other income . Interest Rate Benchmark Reform UBS AG can continue hedge accounting during the period of uncertainty before existing interest rate benchmarks are replaced with alternative risk-free interest rates. During this per iod, UBS AG can assume that the current benchmark rates will continue to exist, such that forecast transactions are considered highly probable and hedge relationships remain, with little or no consequential impact on the financial statements. Upon replacem ent of existing interest rate benchmark s by alternative risk-free interest rates expected in 2021 and beyond , UBS AG will apply the requirements of Amendments to IFRS 9, IAS 39, IFRS 7, IFRS 4 and IFRS 16 (Interest Rate Benchmark Reform – Phase 2). › Refer t o Note 1b and Note 1c for more information
Fee and commission income and expenses	3 ) Fee and commission income and expenses UBS AG earns fee income from the diverse range of services it provides to its clients. Fee income can be divided into two broad categories: fees earned from services that are provided over a certain period of time, such as management of clients’ assets, custody services and certain advisory services; and fees earned from point-in-time services, such as underwriting fees, deal - contingent merger and acquisitions (M&A) fees an d brokerage fees (e.g., securities and derivative s execution and clearing). UBS AG recognizes fees earned on transaction-based arrangements when it has fully provided the service to the customer. Where the contract requires services to be provided over tim e, income is recognized on a systematic basis over the life of the agreement. Consideration received is allocated to the separately identifiable performance obligations in a contract. Owing to the nature of UBS AG ’s business, contracts that include multiple performance obligations are typically those that are considered to include a series of similar performance obligations fulfilled over time with the same pattern of transfer to the client, e.g., management of client assets and custodial services. A s a consequence, UBS AG is not required to apply significant judgment in allocating the consideration received across the various performance obligations. Point-in-time services are generally for a fixed price or dependent on deal size, e.g., a fixed number of basis points of trade size, where the amount of revenue is known when the performance obligation is met. Fixe d period-in-time fees are recognized on a straight-line basis over the performance period. Custodial and asset management fees can be variable through reference to the size of the customer portfolio and are generally billed on a monthly or quarterly basis once the customer’s portfolio size is known or known with near certainty. This is generally prior to UBS AG ’s reporting dates and such fees are also recognized ratably over the performance period. UBS AG does not recognize performance fees related to mana gement of clients’ assets or fees related to contingencies beyond UBS AG ’s control until such uncertainties are resolved. UBS AG ’s fees are generally earned from short-term contracts , with the majority either collected immediately or via regular monthly o r quarterly amounts deducted directly from client s’ accounts. As a result , UBS AG ’s contracts do not include a financing component or result in the recognition of significant receivables or prepayment assets. Furthermore, due to the short - term nature of su ch contracts , UBS AG has not capitalized any material costs to obtain or fulfil l a contract or generated any significant contract assets or liabilities. UBS AG acts as principal in the majority of contracts with customers, with the exception of derivative s execution and clearing services, resulting in fee and commission income and expense being presented gross on the face of the income statement. For derivative s execution and clearing services, UBS AG only records its specific fees in the income statement, with fees payable to other parties not recognized as an expense but instead directly offset against the associated income collected from the given client. UBS AG presents expenses primarily in line with their nature in the income statement, differentiatin g between expenses that are directly attributable to the satisfaction of specific performance obligations associated with the generation of revenues, which are presented within Total o perating i ncome as Fee and commission expense , and those that are relate d to personnel, general and administrative expenses, which are presented within Total operating expenses . › Refer to Note 4 for more information, including the disaggregation of revenues
Cash and cash equivalents	4 ) Cash and cash equivalents For the purpose of the statement of cash f lows, cash and cash equivalents comprise balances with an original maturity of three months or less, including cash, money market paper and balances at central and other banks.
Share-based and other deferred compensation plans	5 ) Share-based and other deferred compensation plans UBS AG recognizes expenses for deferred compensation awards over the period that the employee is required to provide service to become entitled to the award. Where the service period is shortened, for example in the case of employees affected by restructuring programs or mutually a greed termination provisions, recognition of expense is accelerated to the termination date. Where no future service is required, such as for employees who are eligible for retirement or who have met certain age and length-of-service criteria, the services are presumed to have been received and compensation expense is recognized over the performance year or , in the case of off-cycle awards, immediately on the grant date. Share-based compensation plans UBS Group AG is the grantor of and maintains the obligat ion to settle share-based compensation plans that are awarded to employees of UBS AG. As a consequence, UBS AG classifies the awards of UBS Group AG shares as equity-settled share-based payment transactions. UBS AG recognizes the fair value of awards grant ed to its employees by reference to the fair value of UBS Group AG’s equity instruments on the date of grant, taking into account the terms and conditions inherent in the award, including, where relevant, dividend rights, transfer restrictions in effect be yond the vesting date, market conditions, and non-vesting condition. For equity-settled awards, the fair value is not remeasured unless the terms of the award are modified such that there is an incremental increase in value. No adjustments are made for mod ifications that result in a decrease in value. Any increase in fair value resulting from a modification is recognized as compensation expense, either over the remaining service period or, for vested awards, immediately . E xpense s are recognized, on a per-t ranche basis, over the service period based on an estimate of the number of instruments expected to vest and are adjusted to reflect the actual outcomes of service or performance conditions. For equity-settled awards, forfeiture events resulting from a br each of a non-vesting condition (i.e. , one that does not relate to a service or performance condition) do not result in an y adjustment to the share-based compensation expense. For cash-settled share-based awards, fair value is remeasured at each reporting date , so that the cumulative expense recognized equals the cash distributed. Other deferred compensation plans Compensation expense for other deferred compensation plans is recognized on a per-tranche or straight-line basis, depending on the nature of the plan. The amount recognized is measured based on the present value of the amount expected to be paid under the plan and is remeasured at each reporting date, so that the cumulative expense recognized equals the cash or the fair value of respective financial instruments distributed. › Refer to Note 27 for more information
Post-employment benefit plans	6 ) P ost-employment benefit plans UBS AG sponsors various post-employment benefit plans for its employees worldwide, which include defined benefit and defined contribution pension plans, and other post-employment benefits , such as medical and life insurance benefits that are paya ble after the completion of employment. › Refer to Note 26 for more information Defined benefit plan s Defined benefit plans specify an amount of benefit that an employee will receive, which usually depends on one or more factors , such as age, years of service and compensation. The defined benefit liability recognized in the balance sheet is the present v alue of the defined benefit obligation less the fair value of the plan ’s assets at the balance sheet date , with changes resulting from remeasurements recorded immediately in Other comprehensive income . If the fair value of the plan ’s assets is higher than the present value of the defined benefit obligation, the recognition of the resulting net asset is limited to the present value of economic benefits available in the form of refunds from the plan or reductions in future contributions to the plan. UBS AG ap plies the projected unit credit method to determine the present value of its defined benefit obligations, the related current service cost and, where applicable, the past service cost. These amounts, which take into account the specific features of each pl an, including risk sharing between employee and employer, are calculated periodically by independent qualified actuaries. Critical accounting estimates and judgments The net defined benefit liability or asset at the balance sheet date and the related personnel expense depend on the expected future benefits to be provided, determined using a number of economic and demographic assumptions. A range of assumptions could be applied, and different assumptions could significantly alter the defined benefit li ability or asset and pension expense recognized. The most significant assumptions include life expectancy, the discount rate, expected salary increases, pension increases , and interest credits on retirement savings account balances. S ensitivity analysis fo r reasonable possible movements in each significant assumption for UBS AG ‘s post-employment obligations is provided within Note 2 6 . › Refer to Note 2 6 for more information Defined contribution plans A defined contribution plan pays fixed contributions into a separate entity from which post-employment and other benefits are paid. UBS AG has no legal or constructive obligation to pay further amounts if the plan does not hold sufficient assets to pay emp loyees the benefits relating to employee service in the current and prior periods. Compensation expense is recognized when the employees have rendered services in exchange for contributions. This is generally in the year of contribution. Prepaid contributi ons are recognized as an asset to the extent that a cash refund or a reduction in future payments is available.
Income taxes	7 ) Income taxes UBS AG is subject to the income tax laws of Switzerland and those of the non-Swiss jurisdictions in which UBS AG has business op erations. UBS AG ’s provision for income taxes is composed of current and deferred taxes. Current income taxes represent taxes to be paid or refunded for the current period or previous periods . Deferred taxes are recognized for temporary differences betwe en the carrying amounts and tax bases of assets and liabilities that will result in taxable or deductible amounts in future periods and are measured using the applicable tax rates and laws that have been enacted or substantively enacted by the end of the r eporting period and that will be in effect when such differences are expected to reverse . Deferred tax assets arise from a variety of sources, the most significant being: (i) tax losses that can be carried forward to be used against profits in future years ; and (ii) temporary differences that will result in deductions against profits in future years . Deferred tax assets are recognized only to the extent it is probable that sufficient taxable profits will be available against which these differences can be u sed . When an entity or tax group has a history of recent losses, deferred tax assets are only recognized to the extent there are sufficient taxable temporary differences or there is convincing other evidence that sufficient taxable profit will be available against which the unused tax losses can be utilized . Deferred tax liabilities are recognized for temporary differences between the carrying amounts of assets and liabilities in the balance sheet that reflect the expectation that certain items will give ri se to taxable income in future periods. Deferred and current tax assets and liabilities are offset when : (i) they arise in the same tax reporting group ; (ii) they relate to the same tax authority ; (iii) t he legal right to offset exists; and (iv) they are i ntended to be settled net or realized simultaneously. Current and deferred taxes are recognized as income tax benefit or expense in the income statement, except for current and deferred taxes recognized in relation to : (i) the acquisition of a subsidiary ( for which such amounts would affect the amount of goodwill arising from the acquisition); (ii) gains and losses on the sale of treasury shares (for which the tax effects are recognized directly in Equity ); (iii) unrealized gains or losses on financial inst ruments that are classified at FVOCI; (iv) changes in fair value of derivative instruments designated as cash flow hedges; (v) remeasurements of defined benefit plans; or (vi) certain foreign currency translations of foreign operations. Amounts relating to points (iii) through (vi) are recognized in Other comprehensive income within Equity . UBS AG reflects the potential effect of uncertain tax positions for which acceptance by the relevant tax authority is not considered probable by adjusting current or def erred taxes, as applicable, using either the most likely amount or expected value methods, depending on which method is deemed a better predictor of the basis on which and extent to which the uncertainty will be resolved. Critical accounting estimates and judgments Tax laws are complex, and judgment and interpretations about the application of such laws are required when accounting for income taxes. UBS AG considers the performance of its businesses and the accuracy of historical forecasts and other factors in evalua ting the recoverability of its deferred tax assets, including the remaining tax loss carry-forward period, and its assessment of expected future taxable profits in the forecast period used for recognizing deferred tax assets. Estimating future profitabilit y and business plan forecasts is inherently subjective and is particularly sensitive to future economic, market and other conditions . Forecasts are review ed annually, but adjustments may be made at other times, if required . If recent losses have been incurred, convincing evidence is required to prove there is sufficient future profitability given the value of UBS AG ’s deferred tax assets may be affected , with effects primarily recognized through the income statement. In additio n, judgment is required to assess the expected value of uncertain tax positions and the related probabilities, including interpretation of tax laws, the resolution of any income tax-related appeals and litigation . › Refer to Note 8 f or more information
Investment in associates	8 ) Investments in associates Interests in e ntities where UBS AG has significant influence over the financial and operating policies of the entity but does not have control are classified as investments in associates and accounted for under the equity method of accounting. Typically, UBS AG has significant influence when it holds or has the ability to hold between 20% and 50% of a company’s voting rights. Investments in associates are initially recognized at cost, and the carrying amou nt is increased or decreased after the date of acquisition to recognize UBS AG ’s share of the investee’s comprehensive income and any impairment losses. The net investment in an associate is impaired if there is objective evidence of a loss event and the carrying amount of the investment in the associate exceeds its recoverable amount . › Refer to Note 28 for more information
Property, equipment and software	9 ) Property, equipment and software Property, equipment and software includes own-used properties, leasehold improvements, information technology hardware, externally purchased and internally generated software, as well as communication s and other similar equipment. Property, equipment and software is measured at cost less accumulated dep reciation and i mpairment losses and is reviewed at each reporting date for indication for impairment. Software development costs are capitalized only when the costs can be measured reliably and it is probable that future economic benefits will arise. Depreciation of prop erty, equipment and software begins when they are available for use (i.e., when they are in the location and condition necessary for them to be capable of operating in the manner intended by management ) . Depreciation is calculated on a straight-line basis over an asset ‘s estimated useful life. The est imated useful economic lives of UBS AG ‘s property, equipment and software are: – properties, excluding land: ≤ 67 years – IT hardware and communication s equipment: ≤ 7 years – other machines and equipment: ≤ 10 yea rs – software: ≤ 10 years – leased properties and leasehold improvements: the shorter of the lease term or the economic life of asset (typically ≤ 20 years). Property, equipment and software are generally tested for impairment at the appropriate cash- generat ing unit (CGU) level, alongside goodwill and intangible assets as described in item 10 in this Note . An impairment charge is , however , only recognized for such assets if both the asset’s fair value less costs of disposal and value in use (if determinable) are below its carrying amount . The fair value s of such asset s , other than property that has a market price, are generally determined using a replacement cost approach that reflects the amount that would be currently required by a market participant to replace the service capacity of the asset. If such assets are no longer used, they are tested individually for impa irment. › Refer to Note 12 for more information
Goodwill and intangible assets	10 ) Goodwill and intangible assets Goodwill represents the future economic benefits arising from other assets acquired in a business combination that are not individually identified and recognized . Goodwill is not amortized, but is assessed for impairment at the end of each reporting period , or when indicators of impairment exist . UBS AG tests goodwill for impairment annually , irrespective of whether there is any indication of impairment . The impairment test is performed for each CGU to which goodwill is allocated by comparing the recoverable amount, based on its value in use, to the carrying amount of the respective CGU . An impairment charge is recognized in the income statement if the carrying amount exceeds the recoverable amount. Intangible assets include separately identifiable intangible items arising from business combinations and certain purchased trademarks and similar items. Intangible assets are recognized at cost. The cost of an intangible asset acquired in a business combination is its fair value at the date of acquisition. Intangible assets with a finite useful life are amortized using the straight-line method over their estimated useful life, generally not exceeding 20 years. In rare cases, intangible assets can have an indefinite useful life, in which case they are not amortized. At each reporting date, intangible assets are reviewed for indications of impairment. If such indications exist, the intangible assets are analyzed to assess whether their carrying amount is fully recoverable. An impairment loss is recognized if the carrying amount exceeds the recoverable amount. Critical accounting estimates and judgments UBS AG ‘s methodology for goodwill impairment testing is based on a model that is most sensitive to the following key assumptions: (i) forecasts of earnings available to shareholders in years one to three; (ii) changes in the discount rates; and (iii) changes in the long-term growth rate. Earnings available to shareholders are estimated on the basis of forecast results, which are part of the business plan approved by the BoD. The discount rates and growth rates are determined using external information, as well as considering inputs from bo th internal and external analysts and the view of management . The key assumptions used to determine the recoverable amounts of each cash-generating unit are tested for sensitivity by applying reasonably possible changes to those assumptions. › Refer to Not es 2 and 13 for more information
Provisions and contingent liabilities	11 ) Provisions and contingent liabilities Provisions are liabilities of uncertain timing or amount, and are generally recognized in accordance with IAS 37, Provisions, Continge nt Liabilities and Contingent Asset s , when : (i) UBS AG has a present obligation as a result of a past event; (ii) it is probable that an outflow of resources will be required to settle the obligation; and (iii) a reliable estimate of the amount of the obli gation can be made. The majority of UBS AG ’s provisions relate to litigation, regulatory and similar matters, restructuring, and employee benefits. Restructuring provisions are generally recognized as a consequence of management agreeing to materially cha nge the scope of the business or the manner in which it is conducted, including changes in management structure. Provisions for employee benefits relate mainly to service anniversaries and sabbatical leave, and are recognized in accordance with measurement principles set out in item 6 in this Note. In addition, UBS AG presents expected credit loss allowances within Provisions if they relate to a loan commitment, financial guarantee contract or a revolving revocable credit line. IAS 37 provisions are measure d considering the best estimate of the consideration required to settle the present obligation at the balance sheet date. When conditions required to recognize a provision are not met, a contingent liability is disclosed, unless the likelihood of an outfl ow of resources is remote . Contingent liabilities are also disclosed for possible obligations that arise from past events the existence of which will be confirmed only by uncertain future events not wholly within the control of UBS AG . Critical accounting estimates and judgments Recognition of provisions often involves significant judgment in assessing the existence of an obligation that results from past events and in estimating the probability, timing and amount of any outflows of resources. T his is particularly the case for litigation, regulatory and similar matters, which, due to their nature, are subject to many uncertainties , making their outcome difficult to predict. The amount of any provision recognized is sensitive to the assumptions u sed and there could be a wide range of possible outcomes for any particular matter. Management regularly reviews all the available information regarding such matters, including legal advice, to assess whether the recognition criteria for provisions have be en satisfied and to determine the timing and amount of any potential outflows. › Refer to Note 18 for more information
Foreign currency translation	12 ) Foreign currency translation Transactions denominated in a foreign currency are translated into the functional currency of the reporting entity at the spot exchange rate on the date of the transaction. At the balance sheet date, all monetary assets , including those at FVOCI , and monet ary liabilities denominated in foreign currency are translated into the functional currency using the closing exchange rate. Translation differences are reported in Other net income from financial instruments m easured at fair value through profit or loss . Non-monetary items measured at historical cost are translated at the exchange rate on the date of the transaction. Upon consolidation, assets and liabilities of foreign operations are translated into US dollars , UBS AG ’s presentation currency, at the closing exchange rate on the balance sheet date, and income and expense items and other comprehensive income are translated at the average rate for the period. The resulting foreign currency translation differences are reco gnized in Equity and reclassified to the income statement when UBS AG disposes of, partially or in its entirety, the foreign operation and UBS AG no longer controls the foreign operation. Shar e capital issued, share premium and treasury shares held are tra nslated at the historic average rate, with the difference between the historic average rate and the spot rate realized upon repayment of share capital or disposal of treasury shares reported as Share premium. Cumulative amounts recogniz ed in OCI in respect of cash flow hedges and financial assets measured at FVOCI are translated at the closing exchange rate as of the balance sheet dates, with any translation effects adjusted through Retained earnings . › Refer to Note 3 3 for more information
Non-controlling interests	13 ) Non-controlling interests Non-controlling interests If UBS AG has a n obligation to purchase a non-controlling interest subject to option or forward arrangements , the amounts allocated to non-controlling interests are reduced and a liability equivalent to the exercise price of the option or forward is recognized, with any difference between these two amounts recorded in Share premium. Net cash settlement contracts Contracts involving UBS Group AG shares that require net cash settlement, or provide the counterparty or UBS AG with a settlement option that includes a choice of settling net in cash, are classified as d erivatives held for trading .
Leasing	14 ) Leasing UBS AG predominantly enters into lease contracts, or contracts that include lease components, as a lessee of real estate, including offices, retail branches and sales offices, with a small number of IT hardware leas es. UBS AG identifies non-lease components of a contract and accounts for them separately from lease components. When UBS AG is a lessee in a lease arrangement, UBS AG recognizes a lease liability and cor responding right-of-use (RoU) asset at the commencement of the lease term when UBS AG acquires control of the physical use of the asset. Lease liabilities are presented within Other financial liabilities measured at amortized cost and RoU assets within Pro perty, equipment and software . The lease liability is measured based on the present value of the lease payments over the lease term, discounted using UBS AG ’s unsecured borrowing rate , given that the rate implicit in a lease is generally not observable. In terest expense on the lease liability is presented within Interest expense from financial instruments measured at amortized cost . The RoU asset is recorded at an amount equal to the lease liability but is adjusted for rent prepayments, initial direct costs , any costs to refurbish the leased asset and / or lease incentives received. The RoU asset is depreciated over the shorter of the lease term or the useful life of the underlying asset, with the depreciation presented within Depreciation and impairment of property, equipment and software . Lease payments generally include fixed and variable payments that depend on an index (such as an inflation index). When a lease contains an extension or termination option that UBS AG considers reasonably certain to be e xercised, the expected rental payments or costs of termination are included within the lease payments used to generate the lease liability. UBS AG does not typically enter into leases with purchase options or residual value guarantees. Where UBS AG acts as a lessor or sub-lessor under a finance lease, a receivable is recognized in Other financial assets measured at amortized cost at an amount equal to the present value of the aggregate of the lease payments plus any unguaranteed residual value that UBS AG e xpects to recover at the end of the lease term. Initial direct costs are also included in the initial measurement of the lease receivable. Lease payments received during the lease term are allocated as repayments of the outstanding receivable. Interest inc ome reflects a constant periodic rate of return on UBS AG ’s net investment using the interest rate implicit in the lease (or, for sub-leases, the rate for the head lease). UBS AG reviews the estimated unguaranteed residual value annually, and if the estima ted residual value to be realized is less than the amount assumed at lease inception, a loss is recognized for the expected shortfall. Where UBS AG acts as a lessor or sub-lessor in an operating lease, UBS AG recognizes the operating lease income on a stra ight-line basis over the lease term. Lease receivables are subject to impairment requirements as set out in item 2 g in this Note . ECL on lease receivables are determined following the general impairment model within IFRS 9, Financial Instruments , without utilizing the simplified approach of always measuring impairment at the amount of lifetime ECL. Comparative policy \| Policy applicable prior to 1 January 2019 Operating lease rentals payable were recognized as an expense on a straight-line basis over the lease term, which commence d with control of the physical use of the property. Lease incentives were treated as a reduction of rental expense and were recognized on a consistent basis over the lease term. Operating lease expenses of USD 533 million were presented within General and administrative expenses in 2018. As at the date of adoption of IFRS 16 , UBS AG had USD 24 million of finance leases and accounted for them consistently with the policy applied from 1 January 2019 above. The adoption of IFRS 16 had no impact on retained earnings. › Refer to Note 1 2 and 30 for more information

Changes in accounting policies

Changes in accounting policies (Tables)	12 Months Ended
Changes in accounting policies (Tables)	Dec. 31, 2020
Disclosure Significant Accounting Policies [Line Items]
Disclosure Of Changes In Accounting Policies Explanatory	31.12.19 31.12.18 1.1.18 USD million As reported Effect Restated As reported Effect Restated As reported Effect Restated Balance sheet assets Deferred tax assets 9,537 11 9,548 10,105 11 10,116 10,184 11 10,195 Total assets 972,183 11 972,194 958,489 11 958,500 938,788 11 938,799 Balance sheet liabilities Other non-financial liabilities 8,794 43 8,837 9,022 43 9,065 9,443 43 9,486 of which: Compensation-related liabilities 6,812 43 6,855 7,278 43 7,321 7,873 43 7,916 of which: financial advisor compensation plans 1,463 43 1,506 1,458 43 1,501 Not disclosed Total liabilities 917,476 43 917,519 905,386 43 905,429 886,851 43 886,894 Equity Retained earnings 34,154 (32) 34,122 30,448 (32) 30,416 25,389 (32) 25,357 Equity attributable to shareholders 54,533 (32) 54,501 52,928 (32) 52,896 51,879 (32) 51,847 Total equity 54,707 (32) 54,675 53,103 (32) 53,071 51,938 (32) 51,906 Total liabilities and equity 972,183 11 972,194 958,489 11 958,500 938,788 11 938,799
UBS AG
Disclosure Significant Accounting Policies [Line Items]
Disclosure Of Changes In Accounting Policies Explanatory	31.12.19 31.12.18 1.1.18 USD million As reported Effect Restated As reported Effect Restated As reported Effect Restated Balance sheet assets Deferred tax assets 9,513 11 9,524 10,066 11 10,077 10,121 11 10,132 Total assets 971,916 11 971,927 958,055 11 958,066 939,528 11 939,539 Balance sheet liabilities Other non-financial liabilities 6,168 43 6,211 6,275 43 6,318 6,499 43 6,542 of which: Compensation-related liabilities 4,296 43 4,339 4,645 43 4,688 5,036 43 5,079 of which: financial advisor compensation plans 1,459 43 1,502 1,454 43 1,497 Not disclosed Total liabilities 917,988 43 918,031 905,624 43 905,667 888,100 43 888,143 Equity Retained earnings 23,451 (32) 23,419 23,317 (32) 23,285 21,646 (32) 21,614 Equity attributable to shareholders 53,754 (32) 53,722 52,256 (32) 52,224 51,370 (32) 51,338 Total equity 53,928 (32) 53,896 52,432 (32) 52,400 51,429 (32) 51,397 Total liabilities and equity 971,916 11 971,927 958,055 11 958,066 939,528 11 939,539

Segment reporting (Tables)

Segment reporting (Tables)	12 Months Ended
Segment reporting (Tables)	Dec. 31, 2020
Disclosure Of Operating Segments [Line Items]
Disclosure Of Operating Segments Explanatory	USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions UBS For the year ended 31 December 2020 Net interest income 4,027 2,049 (17) 284 (481) 5,862 Non-interest income 1 13,107 1,858 2,993 9,235 30 27,222 Income 17,134 3,908 2,975 9,519 (452) 33,084 Credit loss (expense) / release (88) (257) (2) (305) (42) (694) Total operating income 17,045 3,651 2,974 9,214 (494) 32,390 Total operating expenses 13,026 2,392 1,519 6,732 567 24,235 Operating profit / (loss) before tax 4,019 1,259 1,455 2,482 (1,060) 8,155 Tax expense / (benefit) 1,583 Net profit / (loss) 6,572 Additional information Total assets 367,714 231,657 28,589 369,683 128,122 1,125,765 Additions to non-current assets 5 12 385 150 2,294 2,847 USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions UBS For the year ended 31 December 2019 Net interest income 3,947 1,992 (25) (669) (744) 4,501 Non-interest income 12,426 1,744 1,962 7,968 367 24,467 Income 16,373 3,736 1,938 7,299 (378) 28,967 Credit loss (expense) / release (20) (21) 0 (30) (7) (78) Total operating income 16,353 3,715 1,938 7,269 (385) 28,889 Total operating expenses 12,955 2,274 1,406 6,485 192 23,312 Operating profit / (loss) before tax 3,397 1,441 532 784 (577) 5,577 Tax expense / (benefit) 1,267 Net profit / (loss) 4,310 Additional information Total assets 2 309,766 209,405 34,565 315,855 102,603 972,194 Additions to non-current assets 68 10 0 1 5,217 5,297 USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions UBS For the year ended 31 December 2018 Net interest income 4,101 2,049 (29) (459) (613) 5,048 Non-interest income 12,700 2,168 1,881 8,538 (4) 25,283 Income 16,800 4,217 1,852 8,079 (617) 30,330 Credit loss (expense) / release (15) (56) 0 (38) (8) (118) Total operating income 16,785 4,161 1,852 8,041 (626) 30,213 Total operating expenses 13,531 2,365 1,426 6,554 346 24,222 Operating profit / (loss) before tax 3,254 1,796 426 1,486 (971) 5,991 Tax expense / (benefit) 1,468 Net profit / (loss) 4,522 Additional information Total assets 2 313,737 200,703 28,140 302,253 113,667 958,500 Additions to non-current assets 196 23 1 89 1,666 1,975 1 Includes a USD 631 million net gain on the sale of a majority stake in Fondcenter AG, of which USD 571 million was recognized in Asset Management and USD 60 million was recognized in Global Wealth Management. Refer to Note 29 for more information. 2 Information has been restated where applicable. Refer to Note 1b for more information.
UBS AG
Disclosure Of Operating Segments [Line Items]
Disclosure Of Operating Segments Explanatory	Segment reporting USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions UBS AG For the year ended 31 December 2020 Net interest income 4,027 2,049 (17) 284 (555) 5,788 Non-interest income 1 13,107 1,859 2,993 9,224 504 27,686 Income 17,134 3,908 2,975 9,508 (52) 33,474 Credit loss (expense) / release (88) (257) (2) (305) (42) (695) Total operating income 17,046 3,651 2,974 9,203 (94) 32,780 Total operating expenses 13,080 2,390 1,520 6,762 1,329 25,081 Operating profit / (loss) before tax 3,965 1,261 1,454 2,441 (1,423) 7,699 Tax expense / (benefit) 1,488 Net profit / (loss) 6,211 Additional information Total assets 367,714 231,710 28,266 369,778 127,858 1,125,327 Additions to non-current assets 5 12 385 150 1,971 2,524 USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions UBS AG For the year ended 31 December 2019 Net interest income 3,947 1,993 (25) (669) (831) 4,415 Non-interest income 12,426 1,745 1,962 7,967 869 24,970 Income 16,373 3,737 1,938 7,298 38 29,385 Credit loss (expense) / release (20) (21) 0 (30) (7) (78) Total operating income 16,353 3,717 1,938 7,268 31 29,307 Total operating expenses 13,018 2,274 1,407 6,515 925 24,138 Operating profit / (loss) before tax 3,335 1,443 531 753 (893) 5,169 Tax expense / (benefit) 1,198 Net profit / (loss) 3,971 Additional information Total assets 2 309,766 209,512 34,565 316,058 102,028 971,927 Additions to non-current assets 68 10 0 1 4,935 5,014 USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions UBS AG For the year ended 31 December 2018 Net interest income 4,101 2,049 (29) (459) (690) 4,971 Non-interest income 12,700 2,169 1,881 8,539 499 25,788 Income 16,801 4,218 1,852 8,080 (191) 30,759 Credit loss (expense) / release (15) (56) 0 (38) (8) (117) Total operating income 16,786 4,162 1,852 8,042 (199) 30,642 Total operating expenses 13,574 2,363 1,427 6,600 1,220 25,184 Operating profit / (loss) before tax 3,212 1,799 425 1,442 (1,419) 5,458 Tax expense / (benefit) 1,345 Net profit / (loss) 4,113 Additional information Total assets 2 313,737 200,767 28,140 302,434 112,988 958,066 Additions to non-current assets 196 23 1 89 1,449 1,757 1 Includes a USD 631 million net gain on the sale of a majority stake in Fondcenter AG, of which USD 571 million was recognized in Asset Management and USD 60 million was recognized in Global Wealth Management. Refer to Note 29 for more information. 2 Information has been restated where applicable. Refer to Note 1b for more information.

Segment reporting by geographic

Segment reporting by geographic location (Tables)	12 Months Ended
Segment reporting by geographic location (Tables)	Dec. 31, 2020
Segment Reporting By Geographic Location [Line Items]
Disclosure Of Geographical Areas Explanatory	For the year ended 31 December 2020 Total operating income Total non-current assets USD billion Share % USD billion Share % Americas 13.0 40 9.0 42 of which: USA 11.7 36 8.4 40 Asia Pacific 6.0 18 1.5 7 Europe, Middle East and Africa (excluding Switzerland) 6.5 20 3.0 14 Switzerland 6.9 21 7.6 36 Global 0.1 0 0.0 0 Total 32.4 100 21.1 100 For the year ended 31 December 2019 Total operating income 1 Total non-current assets USD billion Share % USD billion Share % Americas 12.0 42 8.9 44 of which: USA 10.9 38 8.5 42 Asia Pacific 4.7 16 1.4 7 Europe, Middle East and Africa (excluding Switzerland) 5.8 20 3.0 15 Switzerland 6.7 23 7.1 35 Global (0.3) (1) 0.0 0 Total 28.9 100 20.3 100 For the year ended 31 December 2018 Total operating income 1 Total non-current assets USD billion Share % USD billion Share % Americas 12.6 42 7.4 43 of which: USA 11.5 38 7.0 41 Asia Pacific 4.9 16 0.9 5 Europe, Middle East and Africa (excluding Switzerland) 6.2 21 2.0 12 Switzerland 7.1 24 6.8 40 Global (0.6) (2) 0.0 0 Total 30.2 100 17.1 100 1 Effective as of 1 January 2020, the Investment Bank was realigned into two new business lines, Global Banking and Global Markets, which affects how the business is managed and therefore the allocation of operating income to the regions. The presentation of prior-year information reflects the new regional management structure of the Investment Bank.
UBS AG
Segment Reporting By Geographic Location [Line Items]
Disclosure Of Geographical Areas Explanatory	For the year ended 31 December 2020 Total operating income Total non-current assets USD billion Share % USD billion Share % Americas 13.0 40 9.0 45 of which: USA 11.7 36 8.4 42 Asia Pacific 6.0 18 1.4 7 Europe, Middle East and Africa (excluding Switzerland) 6.5 20 2.7 14 Switzerland 6.9 21 6.9 34 Global 0.5 2 0.0 0 Total 32.8 100 20.0 100 For the year ended 31 December 2019 Total operating income 1 Total non-current assets USD billion Share % USD billion Share % Americas 12.0 41 8.9 46 of which: USA 10.9 37 8.5 44 Asia Pacific 4.7 16 1.3 7 Europe, Middle East and Africa (excluding Switzerland) 5.8 20 2.6 13 Switzerland 6.7 23 6.5 34 Global 0.1 0 0.0 0 Total 29.3 100 19.3 100 For the year ended 31 December 2018 Total operating income 1 Total non-current assets USD billion Share % USD billion Share % Americas 12.6 41 7.4 46 of which: USA 11.5 37 7.0 43 Asia Pacific 4.9 16 0.8 5 Europe, Middle East and Africa (excluding Switzerland) 6.2 20 1.8 11 Switzerland 7.1 23 6.2 38 Global (0.2) (1) 0.0 0 Total 30.6 100 16.2 100 1 Effective as of 1 January 2020, the Investment Bank was realigned into two new business lines, Global Banking and Global Markets, which affects how the business is managed and therefore the allocation of operating income to the regions. The presentation of prior-year information reflects the new regional management structure of the Investment Bank.

Net interest income and other i

Net interest income and other income from fair value changes on financial instruments (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure Of Net Interest Income And Other Net Income From Financial Instruments Measured At Fair Value Through Profit Or Loss [Line Items]
Disclosure Of Net Interest Income And Other Net Income From Financial Instruments Measured At Fair Value Through Profit Or Loss Explanatory	Income statement notes Note 3 Net interest income and other net income from financial instruments measured at fair value through profit or loss For the year ended USD million 31.12.20 31.12.19 31.12.18 Net interest income from financial instruments measured at fair value through profit or loss 1,299 1,011 1,338 Other net income from financial instruments measured at fair value through profit or loss 6,960 6,842 6,960 of which: net gains / (losses) from financial liabilities designated at fair value 1 1,509 (8,748) 9,382 Total net income from financial instruments measured at fair value through profit or loss 8,259 7,853 8,298 Net interest income Net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income Interest income from loans and deposits 2 6,690 8,008 7,801 Interest income from securities financing transactions 3 862 2,005 1,567 Interest income from other financial instruments measured at amortized cost 335 364 266 Interest income from debt instruments measured at fair value through other comprehensive income 101 120 142 Interest income from derivative instruments designated as cash flow hedges 822 188 324 Total interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 8,810 10,684 10,100 Interest expense on loans and deposits 4 1,031 2,634 1,980 Interest expense on securities financing transactions 5 870 1,152 1,130 Interest expense on debt issued 2,237 3,285 3,281 Interest expense on lease liabilities 110 122 Total interest expense from financial instruments measured at amortized cost 4,247 7,194 6,391 Total net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 4,563 3,490 3,710 Net interest income from financial instruments measured at fair value through profit or loss Net interest income from financial instruments at fair value held for trading 841 1,214 1,105 Net interest income from brokerage balances 682 339 575 Net interest income from securities financing transactions at fair value not held for trading 6 77 116 115 Interest income from other financial instruments at fair value not held for trading 585 914 901 Interest expense on other financial instruments designated at fair value (886) (1,571) (1,357) Total net interest income from financial instruments measured at fair value through profit or loss 1,299 1,011 1,338 Total net interest income 5,862 4,501 5,048 1 Excludes fair value changes of hedges related to financial liabilities designated at fair value and foreign currency translation effects arising from translating foreign currency transactions into the respective functional currency, both of which are reported within Other net income from financial instruments measured at fair value through profit or loss. 2019 and 2018 included a net loss of USD 1,830 million and a net gain of USD 2,152 million, respectively, driven by financial liabilities related to unit-linked investment contracts, which are designated at fair value through profit or loss. This was offset by a net gain of USD 1,830 million and a net loss of USD 2,134 million in 2019 and 2018, respectively, related to financial assets for unit-linked investment contracts that are mandatorily measured at fair value through profit or loss not held for trading. 2 Consists of interest income from cash and balances at central banks, loans and advances to banks and customers, and cash collateral receivables on derivative instruments, as well as negative interest on amounts due to banks, customer deposits, and cash collateral payables on derivative instruments. 3 Includes interest income on receivables from securities financing transactions and negative interest, including fees, on payables from securities financing transactions. 4 Consists of interest expense on amounts due to banks, cash collateral payables on derivative instruments, and customer deposits, as well as negative interest on cash and balances at central banks, loans and advances to banks, and cash collateral receivables on derivative instruments. 5 Includes interest expense on payables from securities financing transactions and negative interest, including fees, on receivables from securities financing transactions. 6 Includes interest expense on securities financing transactions designated at fair value.
UBS AG
Disclosure Of Net Interest Income And Other Net Income From Financial Instruments Measured At Fair Value Through Profit Or Loss [Line Items]
Disclosure Of Net Interest Income And Other Net Income From Financial Instruments Measured At Fair Value Through Profit Or Loss Explanatory	Income statement notes Note 3 Net interest income and other net income from financial instruments measured at fair value through profit or loss For the year ended USD million 31.12.20 31.12.19 31.12.18 Net interest income from financial instruments measured at fair value through profit or loss 1,305 1,015 1,344 Other net income from financial instruments measured at fair value through profit or loss 6,930 6,833 6,953 of which: net gains / (losses) from financial liabilities designated at fair value 1 1,625 (8,748) 9,382 Total net income from financial instruments measured at fair value through profit or loss 8,235 7,848 8,297 Net interest income Net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income Interest income from loans and deposits 2 6,696 8,026 7,822 Interest income from securities financing transactions 3 862 2,005 1,567 Interest income from other financial instruments measured at amortized cost 335 364 266 Interest income from debt instruments measured at fair value through other comprehensive income 101 120 142 Interest income from derivative instruments designated as cash flow hedges 822 188 324 Total interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 8,816 10,703 10,121 Interest expense on loans and deposits 4 2,440 4,541 3,566 Interest expense on securities financing transactions 5 870 1,152 1,130 Interest expense on debt issued 918 1,491 1,797 Interest expense on lease liabilities 105 118 Total interest expense from financial instruments measured at amortized cost 4,333 7,303 6,494 Total net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 4,483 3,400 3,628 Net interest income from financial instruments measured at fair value through profit or loss Net interest income from financial instruments at fair value held for trading 847 1,218 1,111 Net interest income from brokerage balances 682 339 575 Net interest income from securities financing transactions at fair value not held for trading 6 77 116 115 Interest income from other financial instruments at fair value not held for trading 585 914 901 Interest expense on other financial instruments designated at fair value (886) (1,571) (1,357) Total net interest income from financial instruments measured at fair value through profit or loss 1,305 1,015 1,344 Total net interest income 5,788 4,415 4,971 1 Excludes fair value changes of hedges related to financial liabilities designated at fair value and foreign currency translation effects arising from translating foreign currency transactions into the respective functional currency, both of which are reported within Other net income from financial instruments measured at fair value through profit or loss. 2019 and 2018 included a net loss of USD 1,830 million and a net gain of USD 2,152 million, respectively, driven by financial liabilities related to unit-linked investment contracts, which are designated at fair value through profit or loss. This was offset by a net gain of USD 1,830 million and a net loss of USD 2,134 million in 2019 and 2018, respectively, related to financial assets for unit-linked investment contracts that are mandatorily measured at fair value through profit or loss not held for trading. 2 Consists of interest income from cash and balances at central banks, loans and advances to banks and customers, and cash collateral receivables on derivative instruments, as well as negative interest on amounts due to banks, customer deposits, and cash collateral payables on derivative instruments. 3 Includes interest income on receivables from securities financing transactions and negative interest, including fees, on payables from securities financing transactions. 4 Consists of interest expense on amounts due to banks, cash collateral payables on derivative instruments, customer deposits, and funding from UBS Group AG and its subsidiaries, as well as negative interest on cash and balances at central banks, loans and advances to banks, and cash collateral receivables on derivative instruments. 5 Includes interest expense on payables from securities financing transactions and negative interest, including fees, on receivables from securities financing transactions. 6 Includes interest expense on securities financing transactions designated at fair value.

Net fee and commission income (

Net fee and commission income (Tables)	12 Months Ended
Net fee and commission income (Tables)	Dec. 31, 2020
Net fee And Commission Income [Line Items]
Disclosure Of Fee And Commission Income Expense Explanatory	Note 4 Net fee and commission income For the year ended USD million 31.12.20 31.12.19 31.12.18 Fee and commission income Underwriting fees 1,085 741 811 of which: equity underwriting fees 657 360 431 of which: debt underwriting fees 428 382 380 M&A and corporate finance fees 736 774 768 Brokerage fees 4,132 3,248 3,521 Investment fund fees 5,289 4,858 4,954 Portfolio management and related services 8,009 7,656 7,756 Other 1,710 1,832 1,786 Total fee and commission income 1 20,961 19,110 19,598 of which: recurring 13,009 12,544 12,911 of which: transaction-based 7,491 6,402 6,594 of which: performance-based 461 163 93 Fee and commission expense Brokerage fees paid 274 310 316 Distribution fees paid 589 590 580 Other 912 797 807 Total fee and commission expense 1,775 1,696 1,703 Net fee and commission income 19,186 17,413 17,895 of which: net brokerage fees 3,858 2,938 3,205 1 For the year ended 31 December 2020, reflects third-party fee and commission income of USD 12,475 million for Global Wealth Management, USD 1,426 million for Personal & Corporate Banking, USD 3,129 million for Asset Management, USD 3,882 million for the Investment Bank and USD 49 million for Group Functions (for the year ended 31 December 2019: USD 11,694 million for Global Wealth Management, USD 1,307 million for Personal & Corporate Banking, USD 2,659 million for Asset Management, USD 3,355 million for the Investment Bank and USD 94 million for Group Functions; for the year ended 31 December 2018: USD 12,059 million for Global Wealth Management, USD 1,338 million for Personal & Corporate Banking, USD 2,579 million for Asset Management, USD 3,525 million for the Investment Bank and USD 97 million for Group Functions).
UBS AG
Net fee And Commission Income [Line Items]
Disclosure Of Fee And Commission Income Expense Explanatory	Note 4 Net fee and commission income For the year ended USD million 31.12.20 31.12.19 31.12.18 Fee and commission income Underwriting fees 1,104 784 843 of which: equity underwriting fees 657 360 431 of which: debt underwriting fees 446 424 412 M&A and corporate finance fees 736 774 768 Brokerage fees 4,132 3,248 3,521 Investment fund fees 5,289 4,859 4,955 Portfolio management and related services 8,009 7,656 7,756 Other 1,712 1,836 1,789 Total fee and commission income 1 20,982 19,156 19,632 of which: recurring 13,010 12,545 12,911 of which: transaction-based 7,512 6,449 6,629 of which: performance-based 461 163 93 Fee and commission expense Brokerage fees paid 274 310 316 Distribution fees paid 589 590 580 Other 911 796 807 Total fee and commission expense 1,775 1,696 1,703 Net fee and commission income 19,207 17,460 17,930 of which: net brokerage fees 3,858 2,938 3,205 1 For the year ended 31 December 2020, reflects third-party fee and commission income of USD 12,475 million for Global Wealth Management, USD 1,427 million for Personal & Corporate Banking, USD 3,129 million for Asset Management, USD 3,901 million for the Investment Bank and USD 50 million for Group Functions (for the year ended 31 December 2019: USD 11,694 million for Global Wealth Management, USD 1,307 million for Personal & Corporate Banking, USD 2,659 million for Asset Management, USD 3,397 million for the Investment Bank and USD 98 million for Group Functions; for the year ended 31 December 2018: USD 12,059 million for Global Wealth Management, USD 1,338 million for Personal & Corporate Banking, USD 2,579 million for Asset Management, USD 3,557 million for the Investment Bank and USD 100 million for Group Functions).

Other income (Tables)

Other income (Tables)	12 Months Ended
Other income (Tables)	Dec. 31, 2020
Other Income [Line Items]
Disclosure Of Other Operating Income Explanatory	Note 5 Other income For the year ended USD million 31.12.20 31.12.19 31.12.18 Associates, joint ventures and subsidiaries Net gains / (losses) from acquisitions and disposals of subsidiaries 1 635 2 (36) (290) Net gains / (losses) from disposals of investments in associates 0 4 46 Share of net profits of associates and joint ventures 84 3 46 529 4 Impairments related to associates 0 (1) 0 Total 719 13 284 Net gains / (losses) from disposals of financial assets measured at fair value through other comprehensive income 40 31 0 Income from properties 5 26 27 24 Net gains / (losses) from properties held for sale 76 6 (19) 40 Other 216 7 160 80 Total other income 1,076 212 428 1 Includes foreign exchange gains / (losses) reclassified from other comprehensive income related to the disposal or closure of foreign operations. 2 Includes a USD 631 million net gain on the sale of a majority stake in Fondcenter AG. Refer to Note 29 for more information. 3 Includes a valuation gain of USD 26 million on UBS’s equity ownership of SIX Group. 4 Includes a valuation gain of USD 460 million on UBS’s equity ownership of SIX Group related to the sale of SIX Payment Services to Worldline. 5 Includes rent received from third parties. 6 Includes net gains of USD 140 million arising from sale-and-leaseback transactions, primarily related to a property in Geneva, partly offset by remeasurement losses relating to properties that were reclassified as held for sale. 7 Includes a USD 215 million gain on the sale of intellectual property rights associated with the Bloomberg Commodity Index family.
UBS AG
Other Income [Line Items]
Disclosure Of Other Operating Income Explanatory	Note 5 Other income For the year ended USD million 31.12.20 31.12.19 31.12.18 Associates, joint ventures and subsidiaries Net gains / (losses) from acquisitions and disposals of subsidiaries 1 635 2 (36) (292) Net gains / (losses) from disposals of investments in associates 0 4 46 Share of net profits of associates and joint ventures 84 3 46 529 4 Impairments related to associates 0 (1) 0 Total 719 13 283 Net gains / (losses) from disposals of financial assets measured at fair value through other comprehensive income 40 31 0 Income from properties 5 25 27 24 Net gains / (losses) from properties held for sale 76 6 (19) 40 Income from shared services provided to UBS Group AG or its subsidiaries 422 464 478 Other 267 7 161 80 Total other income 1,549 677 905 1 Includes foreign exchange gains / (losses) reclassified from other comprehensive income related to the disposal or closure of foreign operations. 2 Includes a USD 631 million net gain on the sale of a majority stake in Fondcenter AG. Refer to Note 29 for more information. 3 Includes a valuation gain of USD 26 million on UBS AG’s equity ownership of SIX Group. 4 Includes a valuation gain of USD 460 million on UBS AG’s equity ownership of SIX Group related to the sale of SIX Payment Services to Worldline. 5 Includes rent received from third parties. 6 Includes net gains of USD 140 million arising from sale-and-leaseback transactions, primarily related to a property in Geneva, partly offset by remeasurement losses relating to properties that were reclassified as held for sale. 7 Includes a USD 215 million gain on the sale of intellectual property rights associated with the Bloomberg Commodity Index family.

Personnel expenses (Tables)

Personnel expenses (Tables)	12 Months Ended
Personnel expenses (Tables)	Dec. 31, 2020
Personnel Expenses [Line Items]
Disclosure Of Employee Benefits Explanatory	Note 6 Personnel expenses For the year ended USD million 31.12.20 31.12.19 31.12.18 Salaries 1 7,023 6,518 6,448 Variable compensation – performance awards 2 3,209 3 2,755 2,995 of which: guarantees for new hires 25 29 43 Variable compensation – other 2 220 246 243 Financial advisor compensation 2,4 4,091 4,043 4,054 Contractors 375 381 489 Social security 899 3 799 791 Post-employment benefit plans 5 845 787 457 6 Other personnel expenses 561 3 555 654 Total personnel expenses 17,224 16,084 16,132 1 Includes role-based allowances. 2 Refer to Note 27 for more information. 3 During 2020, UBS modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees, resulting in an expense of approximately USD 280 million, of which USD 240 million is disclosed within Variable compensation – performance awards, USD 20 million within Social security and USD 20 million within Other personnel expenses. Refer to Note 1b for more information. 4 Financial advisor compensation consists of grid-based compensation based directly on compensable revenues generated by financial advisors and supplemental compensation calculated on the basis of financial advisor productivity, firm tenure, assets and other variables. It also includes expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements. 5 Refer to Note 26 for more information. 6 Changes to the pension fund of UBS in Switzerland announced in 2018 resulted in a reduction in the pension obligation recognized by UBS. As a consequence, a pre-tax gain of USD 241 million was recognized in the income statement in 2018, with no overall effect on total equity. Refer to Note 26 for more information.
UBS AG
Personnel Expenses [Line Items]
Disclosure Of Employee Benefits Explanatory	Note 6 Personnel expenses For the year ended USD million 31.12.20 31.12.19 31.12.18 Salaries 1 5,535 5,183 5,199 Variable compensation – performance awards 2 2,953 3 2,545 2,794 of which: guarantees for new hires 24 29 43 Variable compensation – other 2 201 225 220 Financial advisor compensation 2,4 4,091 4,043 4,054 Contractors 138 147 184 Social security 704 3 627 629 Post-employment benefit plans 5 597 569 363 6 Other personnel expenses 466 3 461 549 Total personnel expenses 14,686 13,801 13,992 1 Includes role-based allowances. 2 Refer to Note 27 for more information. 3 During 2020, UBS AG modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees, resulting in an expense of approximately USD 270 million, of which USD 240 million is disclosed within Variable compensation – performance awards, USD 20 million within Social security and USD 10 million within Other personnel expenses. Refer to Note 1b for more information. 4 Financial advisor compensation consists of grid-based compensation based directly on compensable revenues generated by financial advisors and supplemental compensation calculated on the basis of financial advisor productivity, firm tenure, assets and other variables. It also includes expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements. 5 Refer to Note 26 for more information. 6 Changes to the pension fund of UBS AG in Switzerland announced in 2018 resulted in a reduction in the pension obligation recognized by UBS AG. As a consequence, a pre-tax gain of USD 132 million was recognized in the income statement in 2018, with no overall effect on total equity. Refer to Note 26 for more information.

General and administrative ex_2

General and administrative expenses (Tables)	12 Months Ended
General and administrative expenses (Tables)	Dec. 31, 2020
General And Administrative Expenses [Line Items]
Disclosure Of General And Administrative Expense Explanatory	Note 7 General and administrative expenses For the year ended USD million 31.12.20 31.12.19 31.12.18 Occupancy 412 381 914 Rent and maintenance of IT and other equipment 813 718 654 Communication and market data services 615 627 638 Administration 565 551 590 of which: UK and German bank levies 1 55 41 58 Marketing and public relations 2 293 317 366 Travel and entertainment 169 378 425 Professional fees 675 882 1,015 Outsourcing of IT and other services 1,028 1,158 1,427 Litigation, regulatory and similar matters 3 197 165 657 Other 117 111 110 Total general and administrative expenses 4,885 5,288 6,797 1 The UK bank levy expenses of USD 38 million (USD 30 million for 2019 and USD 40 million for 2018) included a credit of USD 27 million (USD 31 million for 2019 and USD 45 million for 2018) related to prior years. 2 Includes charitable donations. 3 Reflects the net increase in provisions for litigation, regulatory and similar matters recognized in the income statement. Refer to Note 18 for more information. Also includes recoveries from third parties of USD 3 million in 2020 (USD 11 million in 2019 and USD 29 million in 2018).
UBS AG
General And Administrative Expenses [Line Items]
Disclosure Of General And Administrative Expense Explanatory	Note 7 General and administrative expenses For the year ended USD million 31.12.20 31.12.19 31.12.18 Occupancy 362 342 852 Rent and maintenance of IT and other equipment 346 339 326 Communication and market data services 505 517 520 Administration 5,499 5,176 5,383 of which: shared services costs charged by UBS Group AG or its subsidiaries 4,939 4,621 4,803 of which: UK and German bank levies 1 55 41 58 Marketing and public relations 2 225 233 277 Travel and entertainment 132 325 367 Professional fees 592 782 870 Outsourcing of IT and other services 522 610 729 Litigation, regulatory and similar matters 3 197 165 657 Other 108 97 95 Total general and administrative expenses 8,486 8,586 10,075 1 The UK bank levy expenses of USD 38 million (USD 30 million for 2019 and USD 40 million for 2018) included a credit of USD 27 million (USD 31 million for 2019 and USD 45 million for 2018) related to prior years. 2 Includes charitable donations. 3 Reflects the net increase in provisions for litigation, regulatory and similar matters recognized in the income statement. Refer to Note 18 for more information. Also includes recoveries from third parties of USD 3 million in 2020 (USD 11 million in 2019 and USD 29 million in 2018).

Income taxes (Tables)

Income taxes (Tables)	12 Months Ended
Income taxes (Tables)	Dec. 31, 2020
Disclosure Of Income Taxes [Line Items]
Disclosure Of Income Tax By Geographical Areas Explanatory	For the year ended USD million 31.12.20 31.12.19 31.12.18 Tax expense / (benefit) Swiss Current 482 365 469 Deferred 116 265 2,377 Total Swiss 598 630 2,846 Non-Swiss Current 749 426 575 Deferred 236 211 (1,953) Total non-Swiss 985 637 (1,378) Total income tax expense / (benefit) recognized in the income statement 1,583 1,267 1,468
Disclosure of tax expense/(benefit) recognized and its relationship with accounting profit [text block]	For the year ended USD million 31.12.20 31.12.19 31.12.18 Operating profit / (loss) before tax 8,155 5,577 5,991 of which: Swiss 3,403 2,571 1,843 of which: non-Swiss 4,752 3,006 4,148 Income taxes at Swiss tax rate of 19.5% for 2020, 20.5% for 2019 and 21% for 2018 1,590 1,143 1,258 Increase / (decrease) resulting from: Non-Swiss tax rates differing from Swiss tax rate 110 82 55 Tax effects of losses not recognized 144 131 223 Previously unrecognized tax losses now utilized (212) (265) (25) Non-taxable and lower-taxed income (394) (351) (430) Non-deductible expenses and additional taxable income 385 732 905 Adjustments related to prior years – current tax (67) (5) 114 Adjustments related to prior years – deferred tax 12 (6) 26 Change in deferred tax recognition (381) (294) (795) Adjustments to deferred tax balances arising from changes in tax rates 234 (9) 0 Other items 161 107 137 Income tax expense / (benefit) 1,583 1,267 1,468
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits Explanatory	USD million 31.12.20 31.12.19 1 Deferred tax assets 2 Gross Valuation allowance Recognized Gross Valuation allowance Recognized Tax loss carry-forwards 14,108 (8,715) 5,393 14,826 (8,861) 5,965 Temporary differences 4,384 (565) 3,819 4,197 (613) 3,583 of which: related to real estate costs capitalized for US tax purposes 2,268 0 2,268 2,219 0 2,219 of which: related to compensation and benefits 1,128 (173) 955 1,091 (179) 912 of which: related to trading assets 23 (6) 16 99 (5) 93 of which: other 966 (386) 580 788 (429) 359 Total deferred tax assets 18,492 (9,280) 9,212 19,022 (9,474) 9,548 Deferred tax liabilities Goodwill and intangible assets 31 29 Cash flow hedges 425 156 Other 108 126 Total deferred tax liabilities 564 311 1 Comparative-period information has been restated. Refer to Note 1b for more information. 2 Less deferred tax liabilities as applicable.
Disclosure of total recognized and unrecognized deferred tax assets ("Gross") and unrecognized deferred tax assets ("Valuation Allowance") [text block]	USD million 31.12.20 31.12.19 1 Deferred tax assets 2 Gross Valuation allowance Recognized Gross Valuation allowance Recognized Tax loss carry-forwards 14,108 (8,715) 5,393 14,826 (8,861) 5,965 Temporary differences 4,384 (565) 3,819 4,197 (613) 3,583 of which: related to real estate costs capitalized for US tax purposes 2,268 0 2,268 2,219 0 2,219 of which: related to compensation and benefits 1,128 (173) 955 1,091 (179) 912 of which: related to trading assets 23 (6) 16 99 (5) 93 of which: other 966 (386) 580 788 (429) 359 Total deferred tax assets 18,492 (9,280) 9,212 19,022 (9,474) 9,548 Deferred tax liabilities Goodwill and intangible assets 31 29 Cash flow hedges 425 156 Other 108 126 Total deferred tax liabilities 564 311 1 Comparative-period information has been restated. Refer to Note 1b for more information. 2 Less deferred tax liabilities as applicable.
Disclosure of unrecognized tax loss carry-forwards	Unrecognized tax loss carry-forwards USD million 31.12.20 31.12.19 Within 1 year 146 13 From 2 to 5 years 638 609 From 6 to 10 years 13,257 14,712 From 11 to 20 years 3,858 4,030 No expiry 17,227 18,364 Total 35,127 37,728
UBS AG
Disclosure Of Income Taxes [Line Items]
Disclosure Of Income Tax By Geographical Areas Explanatory	For the year ended USD million 31.12.20 31.12.19 31.12.18 Tax expense / (benefit) Swiss Current 417 336 434 Deferred 107 246 2,326 Total Swiss 524 582 2,760 Non-Swiss Current 715 402 537 Deferred 248 214 (1,952) Total non-Swiss 963 616 (1,415) Total income tax expense / (benefit) recognized in the income statement 1,488 1,198 1,345
Disclosure of tax expense/(benefit) recognized and its relationship with accounting profit [text block]	For the year ended USD million 31.12.20 31.12.19 31.12.18 Operating profit / (loss) before tax 7,699 5,169 5,458 of which: Swiss 3,042 2,297 1,427 of which: non-Swiss 4,657 2,872 4,031 Income taxes at Swiss tax rate of 19.5% for 2020, 20.5% for 2019 and 21% for 2018 1,501 1,060 1,146 Increase / (decrease) resulting from: Non-Swiss tax rates differing from Swiss tax rate 96 72 68 Tax effects of losses not recognized 144 131 222 Previously unrecognized tax losses now utilized (212) (265) (25) Non-taxable and lower-taxed income (381) (305) (419) Non-deductible expenses and additional taxable income 373 713 883 Adjustments related to prior years – current tax (66) 1 114 Adjustments related to prior years – deferred tax 18 (6) 27 Change in deferred tax recognition (383) (293) (802) Adjustments to deferred tax balances arising from changes in tax rates 235 (9) 0 Other items 163 99 130 Income tax expense / (benefit) 1,488 1,198 1,345
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits Explanatory	USD million 31.12.20 31.12.19 1 Deferred tax assets 2 Gross Valuation allowance Recognized Gross Valuation allowance Recognized Tax loss carry-forwards 14,108 (8,715) 5,393 14,826 (8,861) 5,965 Temporary differences 4,343 (561) 3,782 4,169 (610) 3,559 of which: related to real estate costs capitalized for US tax purposes 2,268 0 2,268 2,219 0 2,219 of which: related to compensation and benefits 1,112 (173) 939 1,086 (179) 907 of which: related to trading assets 23 (5) 16 99 (5) 93 of which: other 940 (383) 558 765 (426) 340 Total deferred tax assets 18,450 (9,276) 9,174 18,995 (9,471) 9,524 Deferred tax liabilities Goodwill and intangible assets 31 29 Cash flow hedges 425 156 Other 102 126 Total deferred tax liabilities 558 311 1 Comparative-period information has been restated. Refer to Note 1b for more information. 2 Less deferred tax liabilities as applicable.
Disclosure of total recognized and unrecognized deferred tax assets ("Gross") and unrecognized deferred tax assets ("Valuation Allowance") [text block]	USD million 31.12.20 31.12.19 1 Deferred tax assets 2 Gross Valuation allowance Recognized Gross Valuation allowance Recognized Tax loss carry-forwards 14,108 (8,715) 5,393 14,826 (8,861) 5,965 Temporary differences 4,343 (561) 3,782 4,169 (610) 3,559 of which: related to real estate costs capitalized for US tax purposes 2,268 0 2,268 2,219 0 2,219 of which: related to compensation and benefits 1,112 (173) 939 1,086 (179) 907 of which: related to trading assets 23 (5) 16 99 (5) 93 of which: other 940 (383) 558 765 (426) 340 Total deferred tax assets 18,450 (9,276) 9,174 18,995 (9,471) 9,524 Deferred tax liabilities Goodwill and intangible assets 31 29 Cash flow hedges 425 156 Other 102 126 Total deferred tax liabilities 558 311 1 Comparative-period information has been restated. Refer to Note 1b for more information. 2 Less deferred tax liabilities as applicable.
Disclosure of unrecognized tax loss carry-forwards	Unrecognized tax loss carry-forwards USD million 31.12.20 31.12.19 Within 1 year 146 13 From 2 to 5 years 638 609 From 6 to 10 years 13,257 14,712 From 11 to 20 years 3,858 4,030 No expiry 17,227 18,364 Total 35,127 37,728

Financial assets at amortized_2

Financial assets at amortized cost and other positions in scope of expected credit loss measurement (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure Of Financial Assets [Line Item]
Disclosure Of Credit Risk Exposure Explanatory	USD million 31.12.20 Carrying amount 1 ECL allowances Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 158,231 158,231 0 0 0 0 0 0 Loans and advances to banks 15,444 15,260 184 0 (16) (9) (5) (1) Receivables from securities financing transactions 74,210 74,210 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 32,737 32,737 0 0 0 0 0 0 Loans and advances to customers 379,528 356,948 20,341 2,240 (1,060) (142) (215) (703) of which: Private clients with mortgages 148,175 138,769 8,448 959 (166) (35) (93) (39) of which: Real estate financing 43,429 37,568 5,838 23 (63) (15) (44) (4) of which: Large corporate clients 15,161 12,658 2,029 474 (279) (27) (40) (212) of which: SME clients 14,872 11,990 2,254 628 (310) (19) (23) (268) of which: Lombard 133,850 133,795 0 55 (36) (5) 0 (31) of which: Credit cards 1,558 1,198 330 30 (38) (11) (11) (16) of which: Commodity trade finance 3,269 3,214 43 12 (106) (5) 0 (101) Other financial assets measured at amortized cost 27,194 26,377 348 469 (133) (34) (9) (90) of which: Loans to financial advisors 2,569 1,982 137 450 (108) (27) (5) (76) Total financial assets measured at amortized cost 687,345 663,763 20,873 2,709 (1,211) (187) (229) (795) Financial assets measured at fair value through other comprehensive income 8,258 8,258 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 695,603 672,021 20,873 2,709 (1,211) (187) (229) (795) Total exposure ECL provisions Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 17,081 14,687 2,225 170 (63) (14) (15) (34) of which: Large corporate clients 3,710 2,048 1,549 113 (20) (4) (5) (12) of which: SME clients 1,310 936 326 48 (13) (1) (1) (11) of which: Financial intermediaries and hedge funds 7,637 7,413 224 0 (17) (7) (9) 0 of which: Lombard 641 633 0 8 (2) 0 0 (2) of which: Commodity trade finance 1,441 1,416 25 0 (2) (1) 0 0 Irrevocable loan commitments 41,372 36,894 4,374 104 (142) (74) (68) 0 of which: Large corporate clients 24,209 20,195 3,950 64 (121) (63) (58) 0 Forward starting reverse repurchase and securities borrowing agreements 3,247 3,247 0 0 0 0 0 0 Committed unconditionally revocable credit lines 40,134 35,233 4,792 108 (50) (29) (21) 0 of which: Real estate financing 6,328 5,811 517 0 (12) (5) (7) 0 of which: Large corporate clients 4,909 2,783 2,099 27 (9) (2) (7) 0 of which: SME clients 5,827 4,596 1,169 63 (16) (12) (4) 0 of which: Lombard 9,671 9,671 0 0 0 (1) 0 0 of which: Credit cards 8,661 8,220 430 11 (8) (6) (2) 0 of which: Commodity trade finance 242 242 0 0 0 0 0 0 Irrevocable committed prolongation of existing loans 3,282 3,277 5 0 (2) (2) 0 0 Total off-balance sheet financial instruments and other credit lines 105,116 93,337 11,396 382 (257) (119) (104) (34) Total allowances and provisions (1,468) (306) (333) (829) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. USD million 31.12.19 Carrying amount 1 ECL allowances Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 107,068 107,068 0 0 0 0 0 0 Loans and advances to banks 12,447 12,367 80 0 (6) (4) (1) (1) Receivables from securities financing transactions 84,245 84,245 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 23,289 23,289 0 0 0 0 0 0 Loans and advances to customers 326,786 309,499 15,538 1,749 (764) (82) (123) (559) of which: Private clients with mortgages 132,646 124,063 7,624 959 (110) (15) (55) (41) of which: Real estate financing 38,481 32,932 5,532 17 (43) (5) (34) (4) of which: Large corporate clients 9,703 9,184 424 94 (117) (15) (4) (98) of which: SME clients 11,786 9,817 1,449 521 (303) (17) (15) (271) of which: Lombard 112,893 112,796 0 98 (22) (4) 0 (18) of which: Credit cards 1,661 1,314 325 22 (35) (8) (14) (13) of which: Commodity trade finance 2,844 2,826 8 10 (81) (5) 0 (77) Other financial assets measured at amortized cost 22,980 21,953 451 576 (143) (35) (13) (95) of which: Loans to financial advisors 2,877 2,341 334 202 (109) (29) (11) (70) Total financial assets measured at amortized cost 576,815 558,420 16,069 2,326 (915) (124) (137) (655) Financial assets measured at fair value through other comprehensive income 6,345 6,345 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 583,159 564,765 16,069 2,326 (915) (124) (137) (655) Total exposure ECL provisions Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 18,142 17,757 304 82 (42) (8) (1) (33) of which: Large corporate clients 3,687 3,461 203 24 (10) (1) 0 (9) of which: SME clients 1,180 1,055 67 58 (24) 0 0 (23) of which: Financial intermediaries and hedge funds 7,966 7,950 16 0 (5) (4) 0 0 of which: Lombard 622 622 0 0 (1) 0 0 (1) of which: Commodity trade finance 2,334 2,320 13 0 (1) (1) 0 0 Irrevocable loan commitments 27,547 27,078 419 50 (35) (30) (5) 0 of which: Large corporate clients 18,735 18,349 359 27 (27) (24) (3) 0 Forward starting reverse repurchase and securities borrowing agreements 1,657 1,657 0 0 0 0 0 0 Committed unconditionally revocable credit lines 35,092 33,848 1,197 46 (34) (17) (17) 0 of which: Real estate financing 5,242 4,934 307 0 (16) (3) (13) 0 of which: Large corporate clients 4,274 4,188 69 17 (1) (1) 0 0 of which: SME clients 4,787 4,589 171 27 (9) (8) (1) 0 of which: Lombard 7,976 7,975 0 1 0 0 0 0 of which: Credit cards 7,890 7,535 355 0 (6) (4) (2) 0 of which: Commodity trade finance 344 344 0 0 0 0 0 0 Irrevocable committed prolongation of existing loans 3,289 3,285 0 4 (3) (3) 0 0 Total off-balance sheet financial instruments and other credit lines 85,728 83,626 1,920 182 (114) (58) (23) (33) Total allowances and provisions (1,029) (181) (160) (688) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances.
Disclosure Of Provision Matrix Explanatory	Balance sheet notes Note 9 Financial assets at amortized cost and other positions in scope of expected credit loss measurement The tables on the following pages provide information about financial instruments and certain other credit lines that are subject to expected credit loss ( ECL ) requirements . UBS ’s ECL disclosure segments or “ECL segments” are aggregated portfolios based on shared risk characteristics and on the same or similar rat ing methods applied. The key segments are presented in the table below . › Refer to Note 2 0 for more information about expected credit loss measurement Segment Segment description Description of credit risk sensitivity Business division / Group Functions Private clients with mortgages Lending to private clients secured by owner-occupied real estate and personal account overdrafts of those clients Sensitive to the interest rate environment, un employmen t levels , real estate collateral values and other regional aspects – Personal & Corporate Banking – Global Wealth Management Real estate financing Rental or income-producing real estate financing to private and corporate clients secured by real estate Sensitive to GDP development s , the interest rate environment , real estate collateral values and other regional aspects – Personal & Corporate Banking – G lobal Wealth Management – Investment Bank Large corporate clients Lending to large corporate and multi - national clients Sensitive to GDP development s , un employment levels , seasonalit y, business cycles and collateral values (diverse collateral , including real estate and other collateral types) – Personal & Corporate Banking – Investment Bank SME clients Lending to small and medium-sized corporate clients Sensitive to GDP development s , un emp loyment levels, the interest rate environment and, to some extent, seasonality , business cycles and collateral values (diverse collateral , including real estate and other collateral types) – Personal & Corporate Banking Lombard Loans secured by pledges of marketable securities, guarantees and other forms of collateral Sensitive to the market (e.g., changes in collateral values ) – Global Wealth Management Credit cards Credit card solutions in Switzerland and the US Sensitive to un employment levels – Personal & Corporate Banking – Global Wealth Management Commodity trade finance Working capital financing of commodity traders, generally extended on a self-liquidating transactional basis Sensitive primarily to the strength of individual transaction structures and collateral values (price volatility of commodities) , as the primary source for debt service is directly linked to the shipments financed – Personal & Corporate Banking Financial intermediaries and hedge fund s Lending to financial institutions and pension funds, including exposures to broker-dealers and clearing houses Sensitive to unemployment level s , the quality and volatility index changes, equity market and GDP development s , regulatory changes and politica l risk – Personal & Corporate Banking – Investment Bank › Refer to Note 20f for more details regarding sensitivity The tables below and on the following pages provide ECL exposure and ECL allowance and provision information about financial instruments and certain non-financial instruments that are subject to ECL . USD million 31.12.20 Carrying amount 1 ECL allowances Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 158,231 158,231 0 0 0 0 0 0 Loans and advances to banks 15,444 15,260 184 0 (16) (9) (5) (1) Receivables from securities financing transactions 74,210 74,210 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 32,737 32,737 0 0 0 0 0 0 Loans and advances to customers 379,528 356,948 20,341 2,240 (1,060) (142) (215) (703) of which: Private clients with mortgages 148,175 138,769 8,448 959 (166) (35) (93) (39) of which: Real estate financing 43,429 37,568 5,838 23 (63) (15) (44) (4) of which: Large corporate clients 15,161 12,658 2,029 474 (279) (27) (40) (212) of which: SME clients 14,872 11,990 2,254 628 (310) (19) (23) (268) of which: Lombard 133,850 133,795 0 55 (36) (5) 0 (31) of which: Credit cards 1,558 1,198 330 30 (38) (11) (11) (16) of which: Commodity trade finance 3,269 3,214 43 12 (106) (5) 0 (101) Other financial assets measured at amortized cost 27,194 26,377 348 469 (133) (34) (9) (90) of which: Loans to financial advisors 2,569 1,982 137 450 (108) (27) (5) (76) Total financial assets measured at amortized cost 687,345 663,763 20,873 2,709 (1,211) (187) (229) (795) Financial assets measured at fair value through other comprehensive income 8,258 8,258 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 695,603 672,021 20,873 2,709 (1,211) (187) (229) (795) Total exposure ECL provisions Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 17,081 14,687 2,225 170 (63) (14) (15) (34) of which: Large corporate clients 3,710 2,048 1,549 113 (20) (4) (5) (12) of which: SME clients 1,310 936 326 48 (13) (1) (1) (11) of which: Financial intermediaries and hedge funds 7,637 7,413 224 0 (17) (7) (9) 0 of which: Lombard 641 633 0 8 (2) 0 0 (2) of which: Commodity trade finance 1,441 1,416 25 0 (2) (1) 0 0 Irrevocable loan commitments 41,372 36,894 4,374 104 (142) (74) (68) 0 of which: Large corporate clients 24,209 20,195 3,950 64 (121) (63) (58) 0 Forward starting reverse repurchase and securities borrowing agreements 3,247 3,247 0 0 0 0 0 0 Committed unconditionally revocable credit lines 40,134 35,233 4,792 108 (50) (29) (21) 0 of which: Real estate financing 6,328 5,811 517 0 (12) (5) (7) 0 of which: Large corporate clients 4,909 2,783 2,099 27 (9) (2) (7) 0 of which: SME clients 5,827 4,596 1,169 63 (16) (12) (4) 0 of which: Lombard 9,671 9,671 0 0 0 (1) 0 0 of which: Credit cards 8,661 8,220 430 11 (8) (6) (2) 0 of which: Commodity trade finance 242 242 0 0 0 0 0 0 Irrevocable committed prolongation of existing loans 3,282 3,277 5 0 (2) (2) 0 0 Total off-balance sheet financial instruments and other credit lines 105,116 93,337 11,396 382 (257) (119) (104) (34) Total allowances and provisions (1,468) (306) (333) (829) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. USD million 31.12.19 Carrying amount 1 ECL allowances Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 107,068 107,068 0 0 0 0 0 0 Loans and advances to banks 12,447 12,367 80 0 (6) (4) (1) (1) Receivables from securities financing transactions 84,245 84,245 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 23,289 23,289 0 0 0 0 0 0 Loans and advances to customers 326,786 309,499 15,538 1,749 (764) (82) (123) (559) of which: Private clients with mortgages 132,646 124,063 7,624 959 (110) (15) (55) (41) of which: Real estate financing 38,481 32,932 5,532 17 (43) (5) (34) (4) of which: Large corporate clients 9,703 9,184 424 94 (117) (15) (4) (98) of which: SME clients 11,786 9,817 1,449 521 (303) (17) (15) (271) of which: Lombard 112,893 112,796 0 98 (22) (4) 0 (18) of which: Credit cards 1,661 1,314 325 22 (35) (8) (14) (13) of which: Commodity trade finance 2,844 2,826 8 10 (81) (5) 0 (77) Other financial assets measured at amortized cost 22,980 21,953 451 576 (143) (35) (13) (95) of which: Loans to financial advisors 2,877 2,341 334 202 (109) (29) (11) (70) Total financial assets measured at amortized cost 576,815 558,420 16,069 2,326 (915) (124) (137) (655) Financial assets measured at fair value through other comprehensive income 6,345 6,345 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 583,159 564,765 16,069 2,326 (915) (124) (137) (655) Total exposure ECL provisions Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 18,142 17,757 304 82 (42) (8) (1) (33) of which: Large corporate clients 3,687 3,461 203 24 (10) (1) 0 (9) of which: SME clients 1,180 1,055 67 58 (24) 0 0 (23) of which: Financial intermediaries and hedge funds 7,966 7,950 16 0 (5) (4) 0 0 of which: Lombard 622 622 0 0 (1) 0 0 (1) of which: Commodity trade finance 2,334 2,320 13 0 (1) (1) 0 0 Irrevocable loan commitments 27,547 27,078 419 50 (35) (30) (5) 0 of which: Large corporate clients 18,735 18,349 359 27 (27) (24) (3) 0 Forward starting reverse repurchase and securities borrowing agreements 1,657 1,657 0 0 0 0 0 0 Committed unconditionally revocable credit lines 35,092 33,848 1,197 46 (34) (17) (17) 0 of which: Real estate financing 5,242 4,934 307 0 (16) (3) (13) 0 of which: Large corporate clients 4,274 4,188 69 17 (1) (1) 0 0 of which: SME clients 4,787 4,589 171 27 (9) (8) (1) 0 of which: Lombard 7,976 7,975 0 1 0 0 0 0 of which: Credit cards 7,890 7,535 355 0 (6) (4) (2) 0 of which: Commodity trade finance 344 344 0 0 0 0 0 0 Irrevocable committed prolongation of existing loans 3,289 3,285 0 4 (3) (3) 0 0 Total off-balance sheet financial instruments and other credit lines 85,728 83,626 1,920 182 (114) (58) (23) (33) Total allowances and provisions (1,029) (181) (160) (688) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. Coverage ratios are calculated for the core loan portfolio by taking ECL allowances and pro visions divided by the gross carrying amount of the exposures. Core loan exposure is defined as the sum of Loans and advances to customers and Loans to financial advisors . These ratios are infl uenced by the following key factors: – lending in Switzerland includes government backed COVID-19 loans; – L ombard loans are generally secured with marketable securities in portfolios that are , as a rule , highly diversified , with strict lending policies that are intended to ensure that credit risk is minimal under most circumstances ; – m ortgage loans to private clients and real estate financing are controlled by conservative eligibility criteria , including low loan-to-value ratio s and strong debt service capabilit ies ; for example, more than 99% of the aggregated amount of Swiss residential mortgage loans would continue to be fully covered by real estate collateral even if the value of that collateral decreased by 20% , for a 30% reduction, more than 98% would be covered ; – the amount of u nsecured retail lending (including credit cards) is insignificant ; – contractual maturities in the loan portfolio, which are a factor in the calculation of ECLs, are generally short, with a large part of the l oan portfolio having contractual maturities of 12 months or less; and – write-offs of ECL allowances against the gross loan balances when all or part of a financial asset is deemed uncollectible o r forgiven, reduces the coverage ratios. Coverage ratios for core loan portfolio 31.12.20 Gross carrying amount (USD million) ECL coverage (bps) On-balance sheet Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Private clients with mortgages 148,341 138,803 8,540 998 11 2 108 390 Real estate financing 43,492 37,583 5,883 27 15 4 75 1,414 Large corporate clients 15,440 12,684 2,069 686 181 21 192 3,089 SME clients 15,183 12,010 2,277 896 204 16 101 2,991 Lombard 133,886 133,800 0 86 3 0 0 3,592 Credit cards 1,596 1,209 342 46 240 91 333 3,488 Commodity trade finance 3,375 3,219 43 113 315 16 2 8,939 Other loans and advances to customers 19,274 17,781 1,402 91 31 14 25 3,563 Loans to financial advisors 2,677 2,009 142 526 404 135 351 1,446 Total 1 383,266 359,099 20,697 3,470 30 5 106 2,247 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Private clients with mortgages 6,285 6,083 198 3 7 6 16 197 Real estate financing 7,056 6,576 481 0 21 9 185 0 Large corporate clients 32,828 25,026 7,598 205 46 27 92 565 SME clients 9,121 7,239 1,734 148 40 19 63 779 Lombard 14,178 14,170 0 8 2 1 0 1,941 Credit cards 8,661 8,220 430 11 9 8 44 0 Commodity trade finance 1,683 1,658 25 0 10 8 15 8,279 Financial intermediaries and hedge funds 7,690 7,242 448 0 26 13 248 166 Other off-balance sheet commitments 14,366 13,876 482 8 13 7 11 12,414 Total 2 101,869 90,090 11,396 382 25 13 91 894 1 Includes Loans and advances to customers of USD 380,589 million and Loans to financial advisors of USD 2,677 million which are presented on the balance sheet line Other assets measured at amortized cost. 2 Excludes Forward starting reverse repurchase and securities borrowing agreements. Coverage ratios for core loan portfolio 31.12.19 Gross carrying amount (USD million) ECL coverage (bps) On-balance sheet Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Private clients with mortgages 132,756 124,077 7,679 1,000 8 1 72 406 Real estate financing 38,524 32,937 5,567 21 11 2 62 1,765 Large corporate clients 9,819 9,199 429 192 119 16 100 5,088 SME clients 12,089 9,834 1,464 791 251 18 104 3,420 Lombard 112,915 112,799 0 116 2 0 0 1,566 Credit cards 1,696 1,322 339 35 205 60 404 3,718 Commodity trade finance 2,925 2,831 8 87 278 17 3 8,844 Other loans and advances to customers 16,824 16,582 176 67 31 9 15 5,750 Loans to financial advisors 2,987 2,370 344 272 366 122 305 2,570 Total 1 330,536 311,951 16,005 2,580 26 4 83 2,436 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Private clients with mortgages 5,520 5,466 51 2 7 6 100 245 Real estate financing 6,046 5,715 326 4 29 9 390 0 Large corporate clients 26,706 26,009 630 67 14 10 59 1,319 SME clients 6,782 6,407 273 101 53 15 115 2,265 Lombard 9,902 9,895 0 7 1 0 0 1,403 Credit cards 7,890 7,535 355 0 8 5 52 0 Commodity trade finance 2,678 2,664 13 0 5 5 9 2,713 Financial intermediaries and hedge funds 9,676 9,651 25 0 5 5 71 83 Other off-balance sheet commitments 8,872 8,626 246 0 5 4 34 22,592 Total 2 84,070 81,969 1,920 182 14 7 120 1,822 1 Includes Loans and advances to customers of USD 327,550 million and Loans to financial advisors of USD 2,987 million which are presented on the balance sheet line Other assets measured at amortized cost. 2 Excludes Forward starting reverse repurchase and securities borrowing agreements.
UBS AG
Disclosure Of Financial Assets [Line Item]
Disclosure Of Credit Risk Exposure Explanatory	USD million 31.12.20 Carrying amount 1 ECL allowances Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 158,231 158,231 0 0 0 0 0 0 Loans and advances to banks 15,344 15,160 184 0 (16) (9) (5) (1) Receivables from securities financing transactions 74,210 74,210 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 32,737 32,737 0 0 0 0 0 0 Loans and advances to customers 380,977 358,396 20,341 2,240 (1,060) (142) (215) (703) of which: Private clients with mortgages 148,175 138,769 8,448 959 (166) (35) (93) (39) of which: Real estate financing 43,429 37,568 5,838 23 (63) (15) (44) (4) of which: Large corporate clients 15,161 12,658 2,029 474 (279) (27) (40) (212) of which: SME clients 14,872 11,990 2,254 628 (310) (19) (23) (268) of which: Lombard 133,850 133,795 0 55 (36) (5) 0 (31) of which: Credit cards 1,558 1,198 330 30 (38) (11) (11) (16) of which: Commodity trade finance 3,269 3,214 43 12 (106) (5) 0 (101) Other financial assets measured at amortized cost 27,219 26,401 348 469 (133) (34) (9) (90) of which: Loans to financial advisors 2,569 1,982 137 450 (108) (27) (5) (76) Total financial assets measured at amortized cost 688,717 665,135 20,873 2,709 (1,211) (187) (229) (795) Financial assets measured at fair value through other comprehensive income 8,258 8,258 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 696,976 673,394 20,873 2,709 (1,211) (187) (229) (795) Total exposure ECL provisions Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 17,081 14,687 2,225 170 (63) (14) (15) (34) of which: Large corporate clients 3,710 2,048 1,549 113 (20) (4) (5) (12) of which: SME clients 1,310 936 326 48 (13) (1) (1) (11) of which: Financial intermediaries and hedge funds 7,637 7,413 224 0 (17) (7) (9) 0 of which: Lombard 641 633 0 8 (2) 0 0 (2) of which: Commodity trade finance 1,441 1,416 25 0 (2) (1) 0 0 Irrevocable loan commitments 41,372 36,894 4,374 104 (142) (74) (68) 0 of which: Large corporate clients 24,209 20,195 3,950 64 (121) (63) (58) 0 Forward starting reverse repurchase and securities borrowing agreements 3,247 3,247 0 0 0 0 0 0 Committed unconditionally revocable credit lines 42,077 37,176 4,792 108 (50) (29) (21) 0 of which: Real estate financing 6,328 5,811 517 0 (12) (5) (7) 0 of which: Large corporate clients 4,909 2,783 2,099 27 (9) (2) (7) 0 of which: SME clients 5,827 4,596 1,169 63 (16) (12) (4) 0 of which: Lombard 9,671 9,671 0 0 0 (1) 0 0 of which: Credit cards 8,661 8,220 430 11 (8) (6) (2) 0 of which: Commodity trade finance 242 242 0 0 0 0 0 0 Irrevocable committed prolongation of existing loans 3,282 3,277 5 0 (2) (2) 0 0 Total off-balance sheet financial instruments and other credit lines 107,059 95,281 11,396 382 (257) (119) (104) (34) Total allowances and provisions (1,468) (306) (333) (829) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. USD million 31.12.19 Carrying amount 1 ECL allowances Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 107,068 107,068 0 0 0 0 0 0 Loans and advances to banks 12,379 12,298 80 0 (6) (4) (1) (1) Receivables from securities financing transactions 84,245 84,245 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 23,289 23,289 0 0 0 0 0 0 Loans and advances to customers 327,992 310,705 15,538 1,749 (764) (82) (123) (559) of which: Private clients with mortgages 132,646 124,063 7,624 959 (110) (15) (55) (41) of which: Real estate financing 38,481 32,932 5,532 17 (43) (5) (34) (4) of which: Large corporate clients 9,703 9,184 424 94 (117) (15) (4) (98) of which: SME clients 11,786 9,817 1,449 521 (303) (17) (15) (271) of which: Lombard 112,893 112,796 0 98 (22) (4) 0 (18) of which: Credit cards 1,661 1,314 325 22 (35) (8) (14) (13) of which: Commodity trade finance 2,844 2,826 8 10 (81) (5) 0 (77) Other financial assets measured at amortized cost 23,012 21,985 451 576 (143) (35) (13) (95) of which: Loans to financial advisors 2,877 2,341 334 202 (109) (29) (11) (70) Total financial assets measured at amortized cost 577,985 559,590 16,069 2,326 (915) (124) (137) (655) Financial assets measured at fair value through other comprehensive income 6,345 6,345 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 584,329 565,935 16,069 2,326 (915) (124) (137) (655) Total exposure ECL provisions Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 18,142 17,757 304 82 (42) (8) (1) (33) of which: Large corporate clients 3,687 3,461 203 24 (10) (1) 0 (9) of which: SME clients 1,180 1,055 67 58 (24) 0 0 (23) of which: Financial intermediaries and hedge funds 7,966 7,950 16 0 (5) (4) 0 0 of which: Lombard 622 622 0 0 (1) 0 0 (1) of which: Commodity trade finance 2,334 2,320 13 0 (1) (1) 0 0 Irrevocable loan commitments 27,547 27,078 419 50 (35) (30) (5) 0 of which: Large corporate clients 18,735 18,349 359 27 (27) (24) (3) 0 Forward starting reverse repurchase and securities borrowing agreements 1,657 1,657 0 0 0 0 0 0 Committed unconditionally revocable credit lines 36,979 35,735 1,197 46 (34) (17) (17) 0 of which: Real estate financing 5,242 4,934 307 0 (16) (3) (13) 0 of which: Large corporate clients 4,274 4,188 69 17 (1) (1) 0 0 of which: SME clients 4,787 4,589 171 27 (9) (8) (1) 0 of which: Lombard 7,976 7,975 0 1 0 0 0 0 of which: Credit cards 7,890 7,535 355 0 (6) (4) (2) 0 of which: Commodity trade finance 344 344 0 0 0 0 0 0 Irrevocable committed prolongation of existing loans 3,289 3,285 0 4 (3) (3) 0 0 Total off-balance sheet financial instruments and other credit lines 87,614 85,513 1,920 182 (114) (58) (23) (33) Total allowances and provisions (1,029) (181) (160) (688) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances.
Disclosure Of Provision Matrix Explanatory	Note 9 Financial assets at amortized cost and other positions in scope of expected credit loss measurement The tables on the following pages provide information about financial instruments and certain other credit lines that are subject to expected credit loss ( ECL ) requirements . UBS AG’s ECL disclosure segments or “ECL segments” are aggregated portfolios based on shared risk characteristics and on the same or similar rating methods applied. The key segments are presented in the table below . › Refer to Note 2 0 for more information about expected credit loss measurement Segment Segment description Description of credit risk sensitivity Business division / Group Functions Private clients with mortgages Lending to private clients secured by owner-occupied real estate and personal account overdrafts of those clients Sensitive to the interest rate environment, un employmen t levels, real estate collateral value s and other regional aspects – Personal & Corporate Banking – Global Wealth Management Real estate financing Rental or income-producing real estate financing to private and corporate clients secured by real estate Sensitive to GDP development s , the interest rate environment , real estate collateral value s and other regional aspects – Personal & Corporate Banking – Global Wealth Management – Investment Bank Large corporate clients Lending to large corporate and multi - national clients Sensitive to GDP development s , un employment levels , seasonalit y, business cycles and collateral values (diverse collateral , including real estate and other collateral types) – Personal & Corporate Banking – Investment Bank SME clients Lending to small and medium-sized corporate clients Sensitive to GDP development s , unemp loyment levels , the interest rate environment and, to some extent, seasonality , business cycles and collateral values (diverse collateral , including real estate and other collateral types) – Personal & Corporate Banking Lombard Loans secured by pledges of marketable securities, guarantees and other forms of collateral Sensitive to the market (e.g., changes in collateral values ) – Global Wealth Management Credit cards Credit card solutions in Switzerland and the US Sensitive to un employment levels – Personal & Corporate Banking – Global Wealth Management Commodity trade finance Working capital financing of commodity traders, generally extended on a self-liquidating transactional basis Sensitive primarily to the strength of individual transaction structures and collateral values (price volatility of commodities) , as the primary source for debt service is directly linked to the shipments financed – Personal & Corporate Banking Financial intermediaries and hedge funds Lending to financial institutions and pension funds, including exposures to broker-dealers and clearing houses Sensitive to unemployment levels, the quality and volatility index changes, equity market and GDP development s , regulatory changes and political risk – Perso nal & Corporate Banking – Investment Bank › Refer to Note 20f for more details regarding sensitivity The tables below and on the following pages provide ECL exposure and ECL allowance and provision information about financial instruments and certain non-financial instruments that are subject to ECL . USD million 31.12.20 Carrying amount 1 ECL allowances Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 158,231 158,231 0 0 0 0 0 0 Loans and advances to banks 15,344 15,160 184 0 (16) (9) (5) (1) Receivables from securities financing transactions 74,210 74,210 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 32,737 32,737 0 0 0 0 0 0 Loans and advances to customers 380,977 358,396 20,341 2,240 (1,060) (142) (215) (703) of which: Private clients with mortgages 148,175 138,769 8,448 959 (166) (35) (93) (39) of which: Real estate financing 43,429 37,568 5,838 23 (63) (15) (44) (4) of which: Large corporate clients 15,161 12,658 2,029 474 (279) (27) (40) (212) of which: SME clients 14,872 11,990 2,254 628 (310) (19) (23) (268) of which: Lombard 133,850 133,795 0 55 (36) (5) 0 (31) of which: Credit cards 1,558 1,198 330 30 (38) (11) (11) (16) of which: Commodity trade finance 3,269 3,214 43 12 (106) (5) 0 (101) Other financial assets measured at amortized cost 27,219 26,401 348 469 (133) (34) (9) (90) of which: Loans to financial advisors 2,569 1,982 137 450 (108) (27) (5) (76) Total financial assets measured at amortized cost 688,717 665,135 20,873 2,709 (1,211) (187) (229) (795) Financial assets measured at fair value through other comprehensive income 8,258 8,258 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 696,976 673,394 20,873 2,709 (1,211) (187) (229) (795) Total exposure ECL provisions Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 17,081 14,687 2,225 170 (63) (14) (15) (34) of which: Large corporate clients 3,710 2,048 1,549 113 (20) (4) (5) (12) of which: SME clients 1,310 936 326 48 (13) (1) (1) (11) of which: Financial intermediaries and hedge funds 7,637 7,413 224 0 (17) (7) (9) 0 of which: Lombard 641 633 0 8 (2) 0 0 (2) of which: Commodity trade finance 1,441 1,416 25 0 (2) (1) 0 0 Irrevocable loan commitments 41,372 36,894 4,374 104 (142) (74) (68) 0 of which: Large corporate clients 24,209 20,195 3,950 64 (121) (63) (58) 0 Forward starting reverse repurchase and securities borrowing agreements 3,247 3,247 0 0 0 0 0 0 Committed unconditionally revocable credit lines 42,077 37,176 4,792 108 (50) (29) (21) 0 of which: Real estate financing 6,328 5,811 517 0 (12) (5) (7) 0 of which: Large corporate clients 4,909 2,783 2,099 27 (9) (2) (7) 0 of which: SME clients 5,827 4,596 1,169 63 (16) (12) (4) 0 of which: Lombard 9,671 9,671 0 0 0 (1) 0 0 of which: Credit cards 8,661 8,220 430 11 (8) (6) (2) 0 of which: Commodity trade finance 242 242 0 0 0 0 0 0 Irrevocable committed prolongation of existing loans 3,282 3,277 5 0 (2) (2) 0 0 Total off-balance sheet financial instruments and other credit lines 107,059 95,281 11,396 382 (257) (119) (104) (34) Total allowances and provisions (1,468) (306) (333) (829) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. USD million 31.12.19 Carrying amount 1 ECL allowances Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 107,068 107,068 0 0 0 0 0 0 Loans and advances to banks 12,379 12,298 80 0 (6) (4) (1) (1) Receivables from securities financing transactions 84,245 84,245 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 23,289 23,289 0 0 0 0 0 0 Loans and advances to customers 327,992 310,705 15,538 1,749 (764) (82) (123) (559) of which: Private clients with mortgages 132,646 124,063 7,624 959 (110) (15) (55) (41) of which: Real estate financing 38,481 32,932 5,532 17 (43) (5) (34) (4) of which: Large corporate clients 9,703 9,184 424 94 (117) (15) (4) (98) of which: SME clients 11,786 9,817 1,449 521 (303) (17) (15) (271) of which: Lombard 112,893 112,796 0 98 (22) (4) 0 (18) of which: Credit cards 1,661 1,314 325 22 (35) (8) (14) (13) of which: Commodity trade finance 2,844 2,826 8 10 (81) (5) 0 (77) Other financial assets measured at amortized cost 23,012 21,985 451 576 (143) (35) (13) (95) of which: Loans to financial advisors 2,877 2,341 334 202 (109) (29) (11) (70) Total financial assets measured at amortized cost 577,985 559,590 16,069 2,326 (915) (124) (137) (655) Financial assets measured at fair value through other comprehensive income 6,345 6,345 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 584,329 565,935 16,069 2,326 (915) (124) (137) (655) Total exposure ECL provisions Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 18,142 17,757 304 82 (42) (8) (1) (33) of which: Large corporate clients 3,687 3,461 203 24 (10) (1) 0 (9) of which: SME clients 1,180 1,055 67 58 (24) 0 0 (23) of which: Financial intermediaries and hedge funds 7,966 7,950 16 0 (5) (4) 0 0 of which: Lombard 622 622 0 0 (1) 0 0 (1) of which: Commodity trade finance 2,334 2,320 13 0 (1) (1) 0 0 Irrevocable loan commitments 27,547 27,078 419 50 (35) (30) (5) 0 of which: Large corporate clients 18,735 18,349 359 27 (27) (24) (3) 0 Forward starting reverse repurchase and securities borrowing agreements 1,657 1,657 0 0 0 0 0 0 Committed unconditionally revocable credit lines 36,979 35,735 1,197 46 (34) (17) (17) 0 of which: Real estate financing 5,242 4,934 307 0 (16) (3) (13) 0 of which: Large corporate clients 4,274 4,188 69 17 (1) (1) 0 0 of which: SME clients 4,787 4,589 171 27 (9) (8) (1) 0 of which: Lombard 7,976 7,975 0 1 0 0 0 0 of which: Credit cards 7,890 7,535 355 0 (6) (4) (2) 0 of which: Commodity trade finance 344 344 0 0 0 0 0 0 Irrevocable committed prolongation of existing loans 3,289 3,285 0 4 (3) (3) 0 0 Total off-balance sheet financial instruments and other credit lines 87,614 85,513 1,920 182 (114) (58) (23) (33) Total allowances and provisions (1,029) (181) (160) (688) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. Coverage ratios are calculated for the core loan portfolio by taking ECL allowances and pro visions divided by the gross carrying amount of the exposures. Core loan exposure is defined as the sum of Loans and advances to customers and Loans to financial adv isors . These ratios are influenced by the following key factors: – lending in Switzerland includes government backed COVID-19 loans; – L ombard loans are generally secured with marketable securities in portfolios that are , as a rule , highly diversified , with strict lending policies that are intended to ensure that credit risk is minimal under most circumstances ; – m ortgage loans to private clients and real estate financing are controlled by conservative eligibility criteria , including low loan-to-value ratio s and strong debt service capabilit ies ; for example, more than 99% of the aggregated amount of Swiss residential mortgage loans would continue to be fully covered by real estate collateral even if t he value of that collateral decreased by 20% , for a 30% reduction , more than 98% would be covered; – the amount of u nsecured retail lending (including credit cards) is insignificant ; – contractual maturities in the loan portfolio , which are a factor in the calculation of ECL s , are generally short, with a large part of the loan portfolio having contractual matur ities of 12 month s or less; and – write-offs of ECL allowances against the gross loan balances when all or part of a financial asset is deemed uncollecti ble or forgiven, reduces the coverage ratios. Coverage ratios for core loan portfolio 31.12.20 Gross carrying amount (USD million) ECL coverage (bps) On-balance sheet Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Private clients with mortgages 148,341 138,803 8,540 998 11 2 108 390 Real estate financing 43,492 37,583 5,883 27 15 4 75 1,414 Large corporate clients 15,440 12,684 2,069 686 181 21 192 3,089 SME clients 15,183 12,010 2,277 896 204 16 101 2,991 Lombard 133,886 133,800 0 86 3 0 0 3,592 Credit cards 1,596 1,209 342 46 240 91 333 3,488 Commodity trade finance 3,375 3,219 43 113 315 16 2 8,939 Other loans and advances to customers 20,722 19,229 1,402 91 29 13 25 3,563 Loans to financial advisors 2,677 2,009 142 526 404 135 351 1,446 Total 1 384,714 360,547 20,697 3,470 30 5 106 2,247 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Private clients with mortgages 6,285 6,083 198 3 7 6 16 197 Real estate financing 7,056 6,576 481 0 21 9 185 0 Large corporate clients 32,828 25,026 7,598 205 46 27 92 565 SME clients 9,121 7,239 1,734 148 40 19 63 779 Lombard 14,178 14,170 0 8 2 1 0 1,941 Credit cards 8,661 8,220 430 11 9 8 44 0 Commodity trade finance 1,683 1,658 25 0 10 8 15 8,279 Financial intermediaries and hedge funds 7,690 7,270 448 0 26 13 248 166 Other off-balance sheet commitments 16,309 15,792 482 8 12 6 11 12,414 Total 2 103,812 92,034 11,396 382 25 13 91 894 1 Includes Loans and advances to customers of USD 382,036 million and Loans to financial advisors of USD 2,677 million which are presented on the balance sheet line Other assets measured at amortized cost. 2 Excludes Forward starting reverse repurchase and securities borrowing agreements. Coverage ratios for core loan portfolio 31.12.19 Gross carrying amount (USD million) ECL coverage (bps) On-balance sheet Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Private clients with mortgages 132,756 124,077 7,679 1,000 8 1 72 406 Real estate financing 38,524 32,937 5,567 21 11 2 62 1,765 Large corporate clients 9,819 9,199 429 192 119 16 100 5,088 SME clients 12,089 9,834 1,464 791 251 18 104 3,420 Lombard 112,915 112,799 0 116 2 0 0 1,566 Credit cards 1,696 1,322 339 35 205 60 404 3,718 Commodity trade finance 2,925 2,831 8 87 278 17 3 8,844 Other loans and advances to customers 18,031 17,788 176 67 29 8 15 5,750 Loans to financial advisors 2,987 2,370 344 272 366 122 305 2,570 Total 1 331,743 313,158 16,005 2,580 26 4 83 2,436 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Private clients with mortgages 5,520 5,466 51 2 7 6 100 245 Real estate financing 6,046 5,715 326 4 29 9 390 0 Large corporate clients 26,706 26,009 630 67 14 10 59 1,319 SME clients 6,782 6,407 273 101 53 15 115 2,265 Lombard 9,902 9,895 0 7 1 0 0 1,403 Credit cards 7,890 7,535 355 0 8 5 52 0 Commodity trade finance 2,678 2,664 13 0 5 5 9 2,713 Financial intermediaries and hedge funds 9,676 9,651 25 0 5 5 71 83 Other off-balance sheet commitments 10,759 10,513 246 0 4 3 34 22,592 Total 2 85,957 83,856 1,920 182 13 7 120 1,822 1 Includes Loans and advances to customers of USD 328,756 million and Loans to financial advisors of USD 2,987 million which are presented on the balance sheet line Other assets measured at amortized cost. 2 Excludes Forward starting reverse repurchase and securities borrowing agreements.

Derivative instruments (Tables)

Derivative instruments (Tables)	12 Months Ended
Derivative instruments (Tables)	Dec. 31, 2020
Derivative [Line Items]
Disclosure of credit derivatives [text block]	31.12.20 31.12.19 USD billion Derivative financial assets Notional amounts related to derivative financial assets 2 Derivative financial liabilities Notional amounts related to derivative financial liabilities 2 Other notional amounts 2,3 Derivative financial assets Notional amounts related to derivative financial assets 2 Derivative financial liabilities Notional amounts related to derivative financial liabilities 2 Other notional amounts 2,3 Interest rate contracts 50.9 928.0 43.9 880.4 11,291.5 42.6 1,020.2 36.6 975.2 11,999.2 of which: forward contracts (OTC) 1 0.0 19.8 0.4 21.9 2,602.5 0.0 16.3 0.3 19.6 3,136.8 of which: swaps (OTC) 40.8 407.0 30.9 364.8 8,105.2 34.3 454.7 26.2 402.9 8,086.0 of which: options (OTC) 10.1 447.5 12.5 460.5 8.1 464.8 10.0 486.1 of which: futures (ETD) 480.6 546.9 of which: options (ETD) 0.0 53.6 0.0 33.1 103.3 0.0 84.4 0.0 66.6 229.5 Credit derivative contracts 2.4 57.6 2.9 64.8 2.0 70.2 3.0 69.9 of which: credit default swaps (OTC) 2.2 53.6 2.6 62.3 1.7 65.0 2.2 66.0 of which: total return swaps (OTC) 0.1 1.9 0.3 2.5 0.3 2.0 0.8 3.3 Foreign exchange contracts 68.7 2,951.1 70.5 2,820.4 1.4 52.5 3,173.4 54.0 2,993.8 1.2 of which: forward contracts (OTC) 27.3 779.1 29.0 853.3 22.4 935.3 23.4 966.6 of which: swaps (OTC) 34.3 1,727.3 34.4 1,567.3 22.8 1,573.2 23.8 1,418.5 of which: options (OTC) 7.1 440.9 7.1 394.7 7.3 660.9 6.8 604.9 Equity contracts 34.8 449.6 41.2 581.3 91.3 22.8 420.3 25.5 534.5 122.1 of which: swaps (OTC) 6.4 89.4 9.8 108.4 4.0 81.3 5.5 96.3 of which: options (OTC) 7.0 87.1 10.9 146.2 5.0 88.6 6.8 144.1 of which: futures (ETD) 67.9 84.9 of which: options (ETD) 10.7 273.1 11.3 326.8 23.5 7.2 250.4 7.8 294.1 37.2 of which: agency transactions (ETD) 4 10.7 9.1 6.6 5.4 Commodity contracts 2.2 57.8 2.0 49.7 10.1 1.8 56.1 1.7 60.0 12.6 of which: swaps (OTC) 0.5 17.7 0.8 18.0 0.4 13.8 0.6 15.1 of which: options (OTC) 1.0 23.5 0.7 17.8 1.0 27.4 0.4 23.6 of which: futures (ETD) 9.3 12.0 of which: forward contracts (ETD) 8.0 6.3 5.9 4.9 Loan commitments measured at FVTPL (OTC) 5 0.0 10.2 0.0 7.1 Unsettled purchases of non-derivative financial instruments 6 0.3 18.3 0.2 10.0 0.1 16.6 0.1 6.9 Unsettled sales of non-derivative financial instruments 6 0.2 17.2 0.3 12.9 0.1 15.4 0.1 9.7 Total derivative instruments, based on IFRS netting 7 159.6 4,479.5 161.1 4,429.7 11,394.4 121.8 4,772.2 120.9 4,657.0 12,135.1 1 Includes certain forward starting repurchase and reverse repurchase agreements that are classified as measured at fair value through profit or loss and are recognized within derivative instruments. The notional amounts related to these instruments were previously presented in the former Note 34 under Forward starting transactions (refer to the “Consolidated financial statements” section of the Annual Report 2019 for more information). Starting with this report, the presentation of these notionals has been aligned with the fair values presented in this table and prior periods have been amended to ensure comparability. 2 In cases where derivative financial instruments are presented on a net basis on the balance sheet, the respective notional amounts of the netted derivative financial instruments are still presented on a gross basis. 3 Other notional amounts relate to derivatives that are cleared through either a central counterparty or an exchange. The fair value of these derivatives is presented on the balance sheet net of the corresponding cash margin under Cash collateral receivables on derivative instruments and Cash collateral payables on derivative instruments and was not material for all periods presented. 4 Notional amounts of exchange-traded agency transactions and OTC-cleared transactions entered into on behalf of clients are not disclosed as they have a significantly different risk profile. 5 These notional amounts relate to derivative loan commitments that were previously presented in the former Note 34 under loan commitments measured at fair value (refer to the “Consolidated financial statements” section of the Annual Report 2019 for more information). Starting with this report, the presentation of these notionals has been aligned with the fair values of the derivative loan commitments presented in this table and prior periods have been amended to ensure comparability. 6 Changes in the fair value of purchased and sold non-derivative financial instruments between trade date and settlement date are recognized as derivative financial instruments. 7 Derivative financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of the entity and all of the counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. Refer to Note 22 for more information on netting arrangements.
UBS AG
Derivative [Line Items]
Disclosure of credit derivatives [text block]	31.12.20 31.12.19 USD billion Derivative financial assets Notional amounts related to derivative financial assets 2 Derivative financial liabilities Notional amounts related to derivative financial liabilities 2 Other notional amounts 2,3 Derivative financial assets Notional amounts related to derivative financial assets 2 Derivative financial liabilities Notional amounts related to derivative financial liabilities 2 Other notional amounts 2,3 Interest rate contracts 50.9 928.0 43.9 880.4 11,291.5 42.6 1,020.2 36.6 975.2 11,999.2 of which: forward contracts (OTC) 1 0.0 19.8 0.4 21.9 2,602.5 0.0 16.3 0.3 19.6 3,136.8 of which: swaps (OTC) 40.8 407.0 30.9 364.8 8,105.2 34.3 454.7 26.2 402.9 8,086.0 of which: options (OTC) 10.1 447.5 12.5 460.5 8.1 464.8 10.0 486.1 of which: futures (ETD) 480.6 546.9 of which: options (ETD) 0.0 53.6 0.0 33.1 103.3 0.0 84.4 0.0 66.6 229.5 Credit derivative contracts 2.4 57.6 2.9 64.8 2.0 70.2 3.0 69.9 of which: credit default swaps (OTC) 2.2 53.6 2.6 62.3 1.7 65.0 2.2 66.0 of which: total return swaps (OTC) 0.1 1.9 0.3 2.5 0.3 2.0 0.8 3.3 Foreign exchange contracts 68.7 2,951.2 70.5 2,820.4 1.4 52.5 3,173.6 54.0 2,993.8 1.2 of which: forward contracts (OTC) 27.3 779.2 29.0 853.3 22.4 935.5 23.4 966.6 of which: swaps (OTC) 34.3 1,727.3 34.4 1,567.3 22.8 1,573.2 23.8 1,418.5 of which: options (OTC) 7.1 440.9 7.1 394.7 7.3 660.9 6.8 604.9 Equity contracts 34.8 449.6 41.2 581.3 91.3 22.8 420.3 25.5 534.5 122.1 of which: swaps (OTC) 6.4 89.4 9.8 108.4 4.0 81.3 5.5 96.3 of which: options (OTC) 7.0 87.1 10.9 146.2 5.0 88.6 6.8 144.1 of which: futures (ETD) 67.9 84.9 of which: options (ETD) 10.7 273.1 11.3 326.8 23.5 7.2 250.4 7.8 294.1 37.2 of which: agency transactions (ETD) 4 10.7 9.1 6.6 5.4 Commodity contracts 2.2 57.8 2.0 49.7 10.1 1.8 56.1 1.7 60.0 12.6 of which: swaps (OTC) 0.5 17.7 0.8 18.0 0.4 13.8 0.6 15.1 of which: options (OTC) 1.0 23.5 0.7 17.8 1.0 27.4 0.4 23.6 of which: futures (ETD) 9.3 12.0 of which: forward contracts (ETD) 0.0 8.0 0.0 6.3 0.0 5.9 0.0 4.9 Loan commitments measured at FVTPL (OTC) 5 0.0 10.2 0.0 7.1 Unsettled purchases of non-derivative financial instruments 6 0.3 18.3 0.2 10.0 0.1 16.6 0.1 6.9 Unsettled sales of non-derivative financial instruments 6 0.2 17.2 0.3 12.9 0.1 15.4 0.1 9.7 Total derivative instruments, based on IFRS netting 7 159.6 4,479.6 161.1 4,429.7 11,394.4 121.8 4,772.4 120.9 4,657.0 12,135.1 1 Includes certain forward starting repurchase and reverse repurchase agreements that are classified as measured at fair value through profit or loss and are recognized within derivative instruments. The notional amounts related to these instruments were previously presented in the former Note 34 under Forward starting transactions (refer to the “Consolidated financial statements” section of the Annual Report 2019 for more information). Starting with this report, the presentation of these notionals has been aligned with the fair values presented in this table and prior periods have been amended to ensure comparability. 2 In cases where derivative financial instruments are presented on a net basis on the balance sheet, the respective notional amounts of the netted derivative financial instruments are still presented on a gross basis. 3 Other notional amounts relate to derivatives that are cleared through either a central counterparty or an exchange. The fair value of these derivatives is presented on the balance sheet net of the corresponding cash margin under Cash collateral receivables on derivative instruments and Cash collateral payables on derivative instruments and was not material for all periods presented. 4 Notional amounts of exchange-traded agency transactions and OTC-cleared transactions entered into on behalf of clients are not disclosed as they have a significantly different risk profile. 5 These notional amounts relate to derivative loan commitments that were previously presented in the former Note 34 under loan commitments measured at fair value (refer to the “Consolidated financial statements” section of the Annual Report 2019 for more information). Starting with this report, the presentation of these notionals has been aligned with the fair values of the derivative loan commitments presented in this table and prior periods have been amended to ensure comparability. 6 Changes in the fair value of purchased and sold non-derivative financial instruments between trade date and settlement date are recognized as derivative financial instruments. 7 Derivative financial assets and liabilities are presented net on the balance sheet if UBS AG has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of the entity and all of the counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. Refer to Note 22 for more information on netting arrangements.

Financial assets measured at _2

Financial assets measured at fair value through OCI (Tables)	12 Months Ended
	Dec. 31, 2020
Financial Assets Measured At Fair Value Through Other Comprehensive Income [Line Items]
Financial Assets Measured At Fair Value Through Other Comprehensive Income Explanatory	Note 11 Financial assets measured at fair value through other comprehensive income USD million 31.12.20 31.12.19 Financial assets measured at fair value through other comprehensive income 1 Debt instruments Government and government agencies 8,155 6,162 of which: USA 7,727 5,814 Banks 103 178 Corporates and other 0 4 Total financial assets measured at fair value through other comprehensive income 8,258 6,345 Unrealized gains, before tax 204 41 Unrealized (losses), before tax (4) (25) Net unrealized gains / (losses), before tax 200 16 Net unrealized gains / (losses), after tax 151 15 1 Refer to Note 21c for more information about product type and fair value hierarchy categorization. Refer also to Note 9 and Note 20 for more information about expected credit loss measurement.
UBS AG
Financial Assets Measured At Fair Value Through Other Comprehensive Income [Line Items]
Financial Assets Measured At Fair Value Through Other Comprehensive Income Explanatory	Note 11 Financial assets measured at fair value through other comprehensive income USD million 31.12.20 31.12.19 Financial assets measured at fair value through other comprehensive income 1 Debt instruments Government and government agencies 8,155 6,162 of which: USA 7,727 5,814 Banks 103 178 Corporates and other 0 4 Total financial assets measured at fair value through other comprehensive income 8,258 6,345 Unrealized gains, before tax 204 41 Unrealized (losses), before tax (4) (25) Net unrealized gains / (losses), before tax 200 16 Net unrealized gains / (losses), after tax 151 15 1 Refer to Note 21c for more information about product type and fair value hierarchy categorization. Refer also to Note 9 and Note 20 for more information about expected credit loss measurement.

Property, equipment and softw_2

Property, equipment and software (Tables)	12 Months Ended
Property, equipment and software (Tables)	Dec. 31, 2020
Notes Property Equipment And Software [Line Items]
Disclosure of property, equipment and software [text block]	Note 12 Property, equipment and software At historical cost less accumulated depreciation USD million Owned properties Leased properties 1 Leasehold improve- ments IT hardware and communication equipment Internally generated software Purchased software Other machines and equipment Projects in progress 2020 2019 Historical cost Balance at the beginning of the year 7,650 3,745 3,004 1,559 6,176 485 799 1,014 24,431 23,321 Additions 26 443 2 37 192 131 75 20 1,389 2,312 1,931 Disposals / write-offs 3 (315) (8) (169) (245) (135) (76) (42) 0 (990) (636) Reclassifications 4 (461) 0 217 11 1,015 3 34 (1,410) (590) (398) Foreign currency translation 686 70 85 65 75 19 31 43 1,074 213 Balance at the end of the year 7,586 4,249 3,174 1,581 7,262 506 843 1,036 26,238 24,431 Accumulated depreciation Balance at the beginning of the year 4,466 519 1,768 1,053 2,906 358 559 0 11,628 10,619 Depreciation 173 535 236 170 753 61 69 0 1,997 1,728 Impairment 5 0 4 1 0 67 0 0 0 72 37 Disposals / write-offs 3 (200) (3) (164) (243) (129) (76) (42) 0 (855) (614) Reclassifications 4 (332) 0 5 0 0 0 0 0 (328) (254) Foreign currency translation 406 28 70 41 35 13 23 0 616 112 Balance at the end of the year 4,513 1,082 1,917 1,021 3,631 356 608 0 13,129 11,628 Net book value Net book value at the beginning of the year 3,184 3,226 1,236 506 3,270 126 241 1,014 12,804 12,702 Net book value at the end of the year 3,073 3,167 1,258 560 3,630 150 235 1,036 6 13,109 12,804 1 Represents right-of-use assets recognized by UBS as lessee. Includes immaterial leased IT equipment. The total cash outflow for leases during 2020 was USD 679 million (2019: USD 641 million). Interest expense on lease liabilities is included within Interest expense from financial instruments measured at amortized cost and Lease liabilities are included within Other financial liabilities measured at amortized cost. Refer to Notes 3 and 19a, respectively. Also refer to Note 1 for more information about the nature of UBS’s leasing activities. 2 In 2020, right-of-use assets included the Additions from sale-and-leaseback transactions, from which UBS recognized net gains of USD 140 million, included within Other income. Refer to Note 5. 3 Includes write-offs of fully depreciated assets. 4 The total net reclassification amount for the respective periods represents reclassifications to Properties and other non-current assets held for sale. 5 Impairment charges recorded in 2020 generally relate to assets that are no longer used for which the recoverable amount based on a value in use approach was determined to be zero. Includes the impairment of internally generated software resulting from a decision in the fourth quarter of 2020 to not proceed with an internal business transfer from UBS Switzerland AG to UBS AG. 6 Consists of USD 855 million related to internally generated software, USD 92 million related to Owned properties and USD 89 million related to Leasehold improvements.
UBS AG
Notes Property Equipment And Software [Line Items]
Disclosure of property, equipment and software [text block]	Note 12 Property, equipment and software At historical cost less accumulated depreciation USD million Owned properties Leased properties 1 Leasehold improve- ments IT hardware and communication equipment Internally generated software Purchased software Other machines and equipment Projects in progress 2020 2019 Historical cost Balance at the beginning of the year 6,988 3,630 2,917 963 5,817 302 768 943 22,329 21,365 Additions 25 401 2 36 90 156 24 18 1,239 1,989 1,740 Disposals / write-offs 3 (315) (8) (169) (155) (133) (46) (41) 0 (867) (554) Reclassifications 4 (469) 0 208 8 937 1 30 (1,305) (590) (391) Foreign currency translation 633 68 84 26 46 6 31 30 924 169 Balance at the end of the year 6,863 4,091 3,077 931 6,824 287 806 907 23,785 22,329 Accumulated depreciation Balance at the beginning of the year 4,074 481 1,729 710 2,735 233 541 0 10,503 9,623 Depreciation 152 512 226 92 703 30 64 0 1,779 1,542 Impairment 5 0 4 1 0 67 0 0 0 72 34 Disposals / write-offs 3 (199) (3) (164) (155) (126) (46) (41) 0 (735) (533) Reclassifications 4 (332) 0 6 0 0 0 0 0 (328) (248) Foreign currency translation 372 26 69 21 20 6 22 0 535 86 Balance at the end of the year 4,067 1,019 1,868 668 3,398 222 585 0 11,827 10,503 Net book value Net book value at the beginning of the year 2,914 3,149 1,188 254 3,082 69 227 943 11,826 11,742 Net book value at the end of the year 2,796 3,072 1,209 264 3,425 65 220 907 6 11,958 11,826 1 Represents right-of-use assets recognized by UBS AG as lessee. Includes immaterial leased IT equipment. The total cash outflow for leases during 2020 was USD 652 million (2019: USD 614 million). Interest expense on lease liabilities is included within Interest expense from financial instruments measured at amortized cost and Lease liabilities are included within Other financial liabilities measured at amortized cost. Refer to Notes 3 and 19a, respectively. Also refer to Note 1 for more information about the nature of UBS AG’s leasing activities. 2 In 2020, right-of-use assets included the Additions from sale-and-leaseback transactions, from which UBS AG recognized net gains of USD 140 million, included within Other income. Refer to Note 5. 3 Includes write-offs of fully depreciated assets. 4 The total net reclassification amount for the respective periods represents reclassifications to Properties and other non-current assets held for sale. 5 Impairment charges recorded in 2020 generally relate to assets that are no longer used for which the recoverable amount based on a value in use approach was determined to be zero. Includes the impairment of internally generated software resulting from a decision in the fourth quarter of 2020 to not proceed with an internal business transfer from UBS Switzerland AG to UBS AG. 6 Consists of USD 762 million related to internally generated software, USD 81 million related to Leasehold improvements and USD 63 million related to Owned properties.

Goodwill and intangible assets

Goodwill and intangible assets (Tables)	12 Months Ended
Goodwill and intangible assets (Tables)	Dec. 31, 2020
Notes Goodwill And Intangible Assets [Line Items]
Disclosure of information for cashgenerating unit with significant amount of goodwill explanatory	Discount and growth rates Discount rates Growth rates In % 31.12.20 31.12.19 31.12.20 31.12.19 Global Wealth Management Americas 9.5 9.5 5.1 4.2 Global Wealth Management Switzerland and International 8.5 8.5 3.7 3.4 Asset Management 8.5 9.0 3.5 3.0 Investment Bank 11.0 11.0 4.8 4.0
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill Explanatory	Goodwill Intangible assets USD million Total Infrastructure 1 Customer relationships, contractual rights and other Total 2020 2019 Historical cost Balance at the beginning of the year 6,272 760 788 1,548 7,820 8,018 Additions 147 2 147 147 11 Disposals (158) 3 (158) (11) Write-offs (35) (35) (35) (185) Foreign currency translation 69 22 22 91 (12) Balance at the end of the year 6,182 760 922 1,683 7,865 7,820 Accumulated amortization and impairment Balance at the beginning of the year 730 621 1,351 1,351 1,371 Amortization 30 25 55 55 65 Impairment 4 2 2 2 0 Disposals 0 (8) Write-offs (35) (35) (35) (75) Foreign currency translation 11 11 11 (2) Balance at the end of the year 760 624 1,385 1,385 1,351 Net book value at the end of the year 6,182 0 298 298 6,480 6,469 1 Consists of the branch network intangible asset recognized in connection with the acquisition of PaineWebber Group, Inc. 2 Relates to the establishment of a banking partnership with Banco do Brasil. Refer to Note 29 for more information. 3 Relates to the sale of a majority stake in Fondcenter AG. Refer to Note 29 for more information. 4 Impairment charges recorded in 2020 relate to assets for which the recoverable amount was determined considering their value in use (recoverable amount of the impaired intangible assets in 2020 was USD 5 million).
Disclosure Of Information For Individual Asset Or Cashgenerating Unit With Significant Amount Of Goodwill Or Intangible Assets With Indefinite Useful Lives Explanatory	USD million Global Wealth Management Americas Global Wealth Management Switzerland and International Asset Management Investment Bank Group Functions Total Goodwill Balance at the beginning of the year 3,719 1,198 1,354 0 0 6,272 Additions 0 Disposals (158) (158) Foreign currency translation 5 34 30 69 Balance at the end of the year 3,724 1,233 1,226 0 0 6,182 Intangible assets Balance at the beginning of the year 92 92 0 5 7 197 Additions 147 147 Disposals 0 Amortization (36) (12) (4) (4) (55) Impairment (2) (2) Foreign currency translation (9) 7 12 11 Balance at the end of the year 46 88 0 161 4 298
Disclosure of future amortization expenses for intangible assets [text block]	USD million Intangible assets Estimated, aggregated amortization expenses for: 2021 33 2022 28 2023 27 2024 24 2025 23 Thereafter 160 Not amortized due to indefinite useful life 2 Total 298
UBS AG
Notes Goodwill And Intangible Assets [Line Items]
Disclosure of information for cashgenerating unit with significant amount of goodwill explanatory	Discount and growth rates Discount rates Growth rates In % 31.12.20 31.12.19 31.12.20 31.12.19 Global Wealth Management Americas 9.5 9.5 5.1 4.2 Global Wealth Management Switzerland and International 8.5 8.5 3.7 3.4 Asset Management 8.5 9.0 3.5 3.0 Investment Bank 11.0 11.0 4.8 4.0
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill Explanatory	Goodwill Intangible assets USD million Total Infrastructure 1 Customer relationships, contractual rights and other Total 2020 2019 Historical cost Balance at the beginning of the year 6,272 760 788 1,548 7,820 8,018 Additions 147 2 147 147 11 Disposals (158) 3 (158) (11) Write-offs (35) (35) (35) (185) Foreign currency translation 69 22 22 91 (12) Balance at the end of the year 6,182 760 922 1,683 7,865 7,820 Accumulated amortization and impairment Balance at the beginning of the year 730 621 1,351 1,351 1,371 Amortization 30 25 55 55 65 Impairment 4 2 2 2 0 Disposals 0 (8) Write-offs (35) (35) (35) (75) Foreign currency translation 11 11 11 (2) Balance at the end of the year 760 624 1,385 1,385 1,351 Net book value at the end of the year 6,182 0 298 298 6,480 6,469 1 Consists of the branch network intangible asset recognized in connection with the acquisition of PaineWebber Group, Inc. 2 Relates to the establishment of a banking partnership with Banco do Brasil. Refer to Note 29 for more information. 3 Relates to the sale of a majority stake in Fondcenter AG. Refer to Note 29 for more information. 4 Impairment charges recorded in 2020 relate to assets for which the recoverable amount was determined considering their value in use (recoverable amount of the impaired intangible assets in 2020 was USD 5 million).
Disclosure Of Information For Individual Asset Or Cashgenerating Unit With Significant Amount Of Goodwill Or Intangible Assets With Indefinite Useful Lives Explanatory	USD million Global Wealth Management Americas Global Wealth Management Switzerland and International Asset Management Investment Bank Group Functions Total Goodwill Balance at the beginning of the year 3,719 1,198 1,354 0 0 6,272 Additions 0 Disposals (158) (158) Foreign currency translation 5 34 30 69 Balance at the end of the year 3,724 1,233 1,226 0 0 6,182 Intangible assets Balance at the beginning of the year 92 92 0 5 7 197 Additions 147 147 Disposals 0 Amortization (36) (12) (4) (4) (55) Impairment (2) (2) Foreign currency translation (9) 7 12 11 Balance at the end of the year 46 88 0 161 4 298
Disclosure of future amortization expenses for intangible assets [text block]	USD million Intangible assets Estimated, aggregated amortization expenses for: 2021 33 2022 28 2023 27 2024 24 2025 23 Thereafter 160 Not amortized due to indefinite useful life 2 Total 298

Other financial and non-finan_3

Other financial and non-financial assets (Tables)	12 Months Ended
Other financial and non-financial assets (Tables)	Dec. 31, 2020
Other financial assets measured at amortized cost
DisclosureOf Other Assets [Line Items]
Disclosure Of Other Assets Explanatory	USD million 31.12.20 31.12.19 Debt securities 18,801 14,141 of which: government bills / bonds 9,789 8,492 Loans to financial advisors 2,569 2,877 Fee- and commission-related receivables 2,014 1,521 Finance lease receivables 1,447 1,444 Settlement and clearing accounts 614 587 Accrued interest income 591 742 Other 1,158 1,669 Total other financial assets measured at amortized cost 27,194 22,980
Other non-financial assets
DisclosureOf Other Assets [Line Items]
Disclosure Of Other Assets Explanatory	USD million 31.12.20 31.12.19 Precious metals and other physical commodities 6,264 4,597 Bail deposit 1 1,418 1,293 Prepaid expenses 1,081 927 VAT and other tax receivables 433 493 Properties and other non-current assets held for sale 246 199 Other 326 346 Total other non-financial assets 9,768 7,856 1 Refer to item 1 in Note 18b for more information.
UBS AG \| Other financial assets measured at amortized cost
DisclosureOf Other Assets [Line Items]
Disclosure Of Other Assets Explanatory	USD million 31.12.20 31.12.19 Debt securities 18,801 14,141 of which: government bills / bonds 9,789 8,492 Loans to financial advisors 2,569 2,877 Fee- and commission-related receivables 2,014 1,520 Finance lease receivables 1,447 1,444 Settlement and clearing accounts 614 587 Accrued interest income 592 742 Other 1,182 1,701 Total other financial assets measured at amortized cost 27,219 23,012
UBS AG \| Other non-financial assets
DisclosureOf Other Assets [Line Items]
Disclosure Of Other Assets Explanatory	USD million 31.12.20 31.12.19 Precious metals and other physical commodities 6,264 4,597 Bail deposit 1 1,418 1,293 Prepaid expenses 731 687 VAT and other tax receivables 392 436 Properties and other non-current assets held for sale 246 199 Other 323 335 Total other non-financial assets 9,374 7,547 1 Refer to item 1 in Note 18b for more information.

Amounts due to banks and cust_2

Amounts due to banks and customer deposits (Tables)	12 Months Ended
Amounts due to banks and customer deposits (Tables)	Dec. 31, 2020
Notes Due To Banks And Customers [Line Items]
Disclosure of due to banks and customers [text block]	N ote 15 Amounts due to banks and customer deposits USD million 31.12.20 31.12.19 Amounts due to banks 11,050 6,570 Customer deposits 524,605 448,284 of which: demand deposits 236,447 176,010 of which: retail savings / deposits 220,898 168,581 of which: time deposits 40,290 62,315 of which: fiduciary deposits 26,970 41,378 Total amounts due to banks and customer deposits 535,655 454,854 Customer deposits increased by USD 76 billion, mainly in Switzerland and the Americas, of which USD 50 billion was in Global Wealth Management and USD 26 billion in Personal & Corporate Banking, as a result of clients holding higher levels of cash, as well as currency effects. Demand deposits and retail savings / deposits together increased by USD 113 billion, partly offs et by de creases of USD 36 billion in time deposits and fiduciary deposits.
UBS AG
Notes Due To Banks And Customers [Line Items]
Disclosure of due to banks and customers [text block]	Note 15 Amounts due to banks, customer deposits, and funding from UBS Group AG and its subsidiaries a) Amounts due to banks and customer deposits USD million 31.12.20 31.12.19 Amounts due to banks 11,050 6,570 Customer deposits 527,929 450,591 of which: demand deposits 237,604 176,972 of which: retail savings / deposits 220,898 168,581 of which: time deposits 42,457 63,659 of which: fiduciary deposits 26,970 41,378 Total amounts due to banks and customer deposits 538,979 457,161 Customer deposits increased by USD 77 billion, mainly in Switzerland and the Americas, of which USD 50 billion was in Global Wealth Management and USD 27 billion in Personal & Corporate Banking, as a result of clients holding higher levels of cash, as well as currency effects. Demand deposits and retail savings / deposits together increased by USD 113 billion, partly offs et by decreases of USD 36 billion in time deposits and fiduciary deposits. b) Funding from UBS Group AG and its subsidiaries USD million 31.12.20 31.12.19 Senior unsecured debt that contributes to total loss-absorbing capacity (TLAC) 36,611 30,105 Senior unsecured debt other than TLAC 2,939 3,389 High-trigger loss-absorbing additional tier 1 capital instruments 11,854 11,958 Low-trigger loss-absorbing additional tier 1 capital instruments 2,575 2,415 Total 1 53,979 47,866 1 UBS AG has also recognized funding from UBS Group AG and its subsidiaries that is designated at fair value. Refer to Note 19b for more information.
Funding From Group And Other Subsidiaries Explanatory	b) Funding from UBS Group AG and its subsidiaries USD million 31.12.20 31.12.19 Senior unsecured debt that contributes to total loss-absorbing capacity (TLAC) 36,611 30,105 Senior unsecured debt other than TLAC 2,939 3,389 High-trigger loss-absorbing additional tier 1 capital instruments 11,854 11,958 Low-trigger loss-absorbing additional tier 1 capital instruments 2,575 2,415 Total 1 53,979 47,866 1 UBS AG has also recognized funding from UBS Group AG and its subsidiaries that is designated at fair value. Refer to Note 19b for more information.

Debt issued designated at fai_2

Debt issued designated at fair value (Table)	12 Months Ended
Debt issued designated at fair value (Table)	Dec. 31, 2020
Disclosure Of Financial Liabilities [Line Items]
Disclosure Of Designated Financial Liabilities At Fair Value Through Profit Or Loss	USD million 31.12.20 31.12.19 Issued debt instruments Equity-linked 1 41,069 41,722 Rates-linked 11,038 16,318 Credit-linked 1,933 1,916 Fixed-rate 3,604 4,636 Commodity-linked 1,497 1,567 Other 2,101 649 of which: debt that contributes to total loss-absorbing capacity 1,190 217 Total debt issued designated at fair value 61,243 66,809 of which: issued by UBS AG with original maturity greater than one year 2 46,427 51,031 of which: life-to-date own credit (gain) / loss 418 92 1 Includes investment fund unit-linked instruments issued. 2 Issued by the legal entity UBS AG. Based on original contractual maturity without considering any early redemption features. 100% of the balance as of 31 December 2020 was unsecured (31 December 2019: more than 99% of the balance was unsecured).
Debt issued designated at fair value
Disclosure Of Financial Liabilities [Line Items]
Maturity analysis for non-derivative financial liabilities	Contractual maturity of carrying amount USD million 2021 2022 2023 2024 2025 2026–2030 Thereafter Total 31.12.20 Total 31.12.19 UBS Group AG 1 Non-subordinated debt Fixed-rate 0 0 0 0 0 0 1,375 1,375 217 UBS AG 2 Non-subordinated debt Fixed-rate 4,144 1,473 1,112 512 318 227 1,623 9,409 10,368 Floating-rate 18,145 8,758 5,915 1,727 6,454 6,058 2,471 49,528 55,299 Subtotal 22,289 10,231 7,027 2,239 6,772 6,286 4,094 58,937 65,668 Other subsidiaries 3 Non-subordinated debt Fixed-rate 88 7 0 0 0 422 22 539 520 Floating-rate 41 185 126 0 0 0 39 392 404 Subtotal 129 192 126 0 0 422 61 931 924 Total 22,418 10,423 7,153 2,239 6,772 6,708 5,530 61,243 66,809 1 Comprises instruments issued by the legal entity UBS Group AG. 2 Comprises instruments issued by the legal entity UBS AG. 3 Comprises instruments issued by subsidiaries of UBS AG.
UBS AG
Disclosure Of Financial Liabilities [Line Items]
Disclosure Of Designated Financial Liabilities At Fair Value Through Profit Or Loss	USD million 31.12.20 31.12.19 Issued debt instruments Equity-linked 1 41,069 41,722 Rates-linked 11,038 16,318 Credit-linked 1,933 1,916 Fixed-rate 3,604 4,636 Commodity-linked 1,497 1,567 Other 726 432 Total debt issued designated at fair value 59,868 66,592 of which: issued by UBS AG with original maturity greater than one year 2 46,427 51,031 of which: life-to-date own credit (gain) / loss 233 82 1 Includes investment fund unit-linked instruments issued. 2 Issued by the legal entity UBS AG. Based on original contractual maturity without considering any early redemption features. 100% of the balance as of 31 December 2020 was unsecured (31 December 2019: more than 99% of the balance was unsecured).
UBS AG \| Debt issued designated at fair value
Disclosure Of Financial Liabilities [Line Items]
Maturity analysis for non-derivative financial liabilities	Contractual maturity of carrying amount USD million 2021 2022 2023 2024 2025 2026–2030 Thereafter Total 31.12.20 Total 31.12.19 UBS AG 1 Non-subordinated debt Fixed-rate 4,144 1,473 1,112 512 318 227 1,623 9,409 10,368 Floating-rate 18,145 8,758 5,915 1,727 6,454 6,058 2,471 49,528 55,299 Subtotal 22,289 10,231 7,027 2,239 6,772 6,286 4,094 58,937 65,668 Other subsidiaries 2 Non-subordinated debt Fixed-rate 88 7 0 0 0 422 22 539 520 Floating-rate 41 185 126 0 0 0 39 392 404 Subtotal 129 192 126 0 0 422 61 931 924 Total 22,418 10,423 7,153 2,239 6,772 6,708 4,155 59,868 66,592 1 Comprises instruments issued by the legal entity UBS AG. 2 Comprises instruments issued by subsidiaries of UBS AG.

Debt issued measured at amort_2

Debt issued measured at amortized cost (Tables)	12 Months Ended
Debt issued measured at amortized cost (Tables)	Dec. 31, 2020
Disclosure Of Financial Liabilities [Line Items]
Disclosure Of Detailed Information About Borrowings Explanatory	USD million 31.12.20 31.12.19 Certificates of deposit 15,680 5,190 Commercial paper 25,472 14,413 Other short-term debt 5,515 2,235 Short-term debt 1 46,666 21,837 Senior unsecured debt that contributes to total loss-absorbing capacity (TLAC) 36,611 30,105 Senior unsecured debt other than TLAC 21,340 25,569 of which: issued by UBS AG with original maturity greater than one year 2 18,464 22,349 Covered bonds 2,796 2,633 Subordinated debt 22,157 21,775 of which: high-trigger loss-absorbing additional tier 1 capital instruments 11,837 11,931 of which: low-trigger loss-absorbing additional tier 1 capital instruments 2,577 2,414 of which: low-trigger loss-absorbing tier 2 capital instruments 7,201 6,892 of which: non-Basel III-compliant tier 2 capital instruments 543 540 Debt issued through the Swiss central mortgage institutions 9,660 8,574 Other long-term debt 3 4 Long-term debt 3 92,566 88,660 Total debt issued measured at amortized cost 4 139,232 110,497 1 Debt with an original contractual maturity of less than one year. 2 Issued by the legal entity UBS AG. Based on original contractual maturity without considering any early redemption features. As of 31 December 2020, 100% of the balance was unsecured (31 December 2019: 100% of the balance was unsecured). 3 Debt with an original maturity greater than or equal to one year. The classification of debt issued into short-term and long-term does not consider any early redemption features. 4 Net of bifurcated embedded derivatives, the fair value of which was not material for the periods presented.
Notes And Debentures Issued [Member]
Disclosure Of Financial Liabilities [Line Items]
Maturity Analysis For Non-derivative Financial Liabilities	Contractual maturity of carrying amount USD million 2021 2022 2023 2024 2025 2026–2030 Thereafter Total 31.12.20 Total 31.12.19 UBS Group AG 1 Non-subordinated debt Fixed-rate 1,856 3,894 4,086 5,522 5,355 12,864 0 33,578 27,306 Floating-rate 1,001 2,638 2,251 0 0 0 0 5,890 6,012 Subordinated debt Fixed-rate 0 0 0 0 0 0 14,413 14,413 14,344 Subtotal 2,857 6,532 6,337 5,522 5,355 12,864 14,413 53,881 47,662 UBS AG 2 Non-subordinated debt Fixed-rate 40,886 5,813 4,224 0 386 0 1,309 52,618 33,696 Floating-rate 12,007 1,155 1,175 0 962 0 0 15,299 13,119 Subordinated debt Fixed-rate 0 2,053 0 2,693 335 2,663 0 7,744 7,431 Subtotal 52,893 9,022 5,398 2,693 1,684 2,663 1,309 75,661 54,247 Other subsidiaries 3 Non-subordinated debt Fixed-rate 1,152 928 1,038 1,106 1,211 3,580 674 9,690 8,588 Subtotal 1,152 928 1,038 1,106 1,211 3,580 674 9,690 8,588 Total 56,902 16,482 12,774 9,321 8,250 19,106 16,397 139,232 110,497 1 Comprises debt issued by the legal entity UBS Group AG. 2 Comprises debt issued by the legal entity UBS AG. 3 Comprises debt issued by subsidiaries of UBS AG.
UBS AG
Disclosure Of Financial Liabilities [Line Items]
Disclosure Of Detailed Information About Borrowings Explanatory	USD million 31.12.20 31.12.19 Certificates of deposit 15,680 5,190 Commercial paper 25,472 14,413 Other short-term debt 5,515 2,235 Short-term debt 1 46,666 21,837 Senior unsecured debt 18,483 22,356 of which: issued by UBS AG with original maturity greater than one year 2 18,464 22,349 Covered bonds 2,796 2,633 Subordinated debt 7,744 7,431 of which: low-trigger loss-absorbing tier 2 capital instruments 7,201 6,892 of which: non-Basel III-compliant tier 2 capital instruments 543 540 Debt issued through the Swiss central mortgage institutions 9,660 8,574 Other long-term debt 3 4 Long-term debt 3 38,685 40,998 Total debt issued measured at amortized cost 4 85,351 62,835 1 Debt with an original contractual maturity of less than one year. 2 Issued by the legal entity UBS AG. Based on original contractual maturity without considering any early redemption features. As of 31 December 2020, 100% of the balance was unsecured (31 December 2019: 100% of the balance was unsecured). 3 Debt with an original maturity greater than or equal to one year. The classification of debt issued into short-term and long-term does not consider any early redemption features. 4 Net of bifurcated embedded derivatives, the fair value of which was not material for the periods presented.
UBS AG \| Notes And Debentures Issued [Member]
Disclosure Of Financial Liabilities [Line Items]
Maturity Analysis For Non-derivative Financial Liabilities	Contractual maturity of carrying amount USD million 2021 2022 2023 2024 2025 2026–2030 Thereafter Total 31.12.20 Total 31.12.19 UBS AG 1 Non-subordinated debt Fixed-rate 40,886 5,813 4,224 0 386 0 1,309 52,618 33,696 Floating-rate 12,007 1,155 1,175 0 962 0 0 15,299 13,119 Subordinated debt Fixed-rate 0 2,053 0 2,693 335 2,663 0 7,744 7,431 Subtotal 52,893 9,022 5,398 2,693 1,684 2,663 1,309 75,661 54,247 Other subsidiaries 2 Non-subordinated debt Fixed-rate 1,152 928 1,038 1,106 1,211 3,580 674 9,690 8,588 Subtotal 1,152 928 1,038 1,106 1,211 3,580 674 9,690 8,588 Total 54,045 9,950 6,437 3,798 2,895 6,243 1,983 85,351 62,835 1 Comprises debt issued by the legal entity UBS AG. 2 Comprises debt issued by subsidiaries of UBS AG.

Provisions and contingent liabi

Provisions and contingent liabilities (Tables)	12 Months Ended
Provisions and contingent liabilities (Tables)	Dec. 31, 2020
Disclosure Of Other Provisions [Line Items]
Total provisions recognized under both IAS 37 and IFRS 9 [textblock]	USD million 31.12.20 31.12.19 Provisions other than provisions for expected credit losses 2,571 2,861 Provisions for expected credit losses 257 114 Total provisions 2,828 2,974
Total provisions with additional information [textblock]	USD million Litigation, regulatory and similar matters 1 Restructuring Other 3 Total 2020 Total 2019 Balance at the beginning of the year 2,475 106 280 2,861 3,245 Increase in provisions recognized in the income statement 233 101 139 472 404 Release of provisions recognized in the income statement (33) (13) (47) (92) (123) Provisions used in conformity with designated purpose (603) (113) (54) (770) (659) Capitalized reinstatement costs 0 0 11 11 1 Reclassifications 0 (14) 14 0 0 Foreign currency translation / unwind of discount 64 4 20 88 (8) Balance at the end of the year 2,135 72 2 363 2,571 2,861 1 Comprises provisions for losses resulting from legal, liability and compliance risks. 2 Primarily consists of provisions for onerous contracts of USD 49 million as of 31 December 2020 (31 December 2019: USD 61 million) and personnel-related restructuring provisions of USD 18 million as of 31 December 2020 (31 December 2019: USD 40 million). 3 Mainly includes provisions related to real estate, employee benefits and operational risks.
UBS AG
Disclosure Of Other Provisions [Line Items]
Total provisions recognized under both IAS 37 and IFRS 9 [textblock]	USD million 31.12.20 31.12.19 Provisions other than provisions for expected credit losses 2,534 2,825 Provisions for expected credit losses 257 114 Total provisions 2,791 2,938
Total provisions with additional information [textblock]	USD million Litigation, regulatory and similar matters 1 Restructuring Other 3 Total 2020 Total 2019 Balance at the beginning of the year 2,475 99 251 2,825 3,209 Increase in provisions recognized in the income statement 233 88 134 455 376 Release of provisions recognized in the income statement (33) (11) (44) (88) (119) Provisions used in conformity with designated purpose (603) (100) (51) (755) (632) Capitalized reinstatement costs 0 0 11 11 0 Reclassifications 0 (13) 13 0 (1) Foreign currency translation / unwind of discount 64 4 18 86 (8) Balance at the end of the year 2,135 67 2 332 2,534 2,825 1 Comprises provisions for losses resulting from legal, liability and compliance risks. 2 Primarily consists of provisions for onerous contracts of USD 49 million as of 31 December 2020 (31 December 2019: USD 61 million) and personnel-related restructuring provisions of USD 13 million as of 31 December 2020 (31 December 2019: USD 33 million). 3 Mainly includes provisions related to real estate, employee benefits and operational risks.

Litigation, regulatory and si_2

Litigation, regulatory and similar matters (Tables)	12 Months Ended
Litigation, regulatory and similar matters (Tables)	Dec. 31, 2020
Notes Litigation Regulatory And Similar Matters [Line Items]
Disclosure of provisions for litigation, regulatory and similar matters [text block]	Provisions for litigation, regulatory and similar matters by business division and in Group Functions 1 USD million Global Wealth Manage- ment Personal & Corporate Banking Asset Manage- ment Investment Bank Group Functions Total 2020 Total 2019 Balance at the beginning of the year 782 113 0 255 1,325 2,475 2,827 Increase in provisions recognized in the income statement 213 0 0 19 1 233 258 Release of provisions recognized in the income statement (24) (6) 0 (1) (2) (33) (81) Provisions used in conformity with designated purpose (154) (1) 0 (52) (395) (603) (518) Reclassifications 0 0 0 (3) 3 0 0 Foreign currency translation / unwind of discount 44 10 0 10 0 64 (12) Balance at the end of the year 861 115 0 227 932 2,135 2,475 1 Provisions, if any, for matters described in this disclosure are recorded in Global Wealth Management (item 3 and item 4) and Group Functions (item 2). Provisions, if any, for the matters described in items 1 and 6 of this disclosure are allocated between Global Wealth Management and Personal & Corporate Banking, and provisions, if any, for the matters described in this disclosure in item 5 are allocated between the Investment Bank and Group Functions.
UBS AG
Notes Litigation Regulatory And Similar Matters [Line Items]
Disclosure of provisions for litigation, regulatory and similar matters [text block]	Provisions for litigation, regulatory and similar matters by business division and in Group Functions 1 USD million Global Wealth Manage- ment Personal & Corporate Banking Asset Manage- ment Investment Bank Group Functions Total 2020 Total 2019 Balance at the beginning of the year 782 113 0 255 1,325 2,475 2,827 Increase in provisions recognized in the income statement 213 0 0 19 1 233 258 Release of provisions recognized in the income statement (24) (6) 0 (1) (2) (33) (81) Provisions used in conformity with designated purpose (154) (1) 0 (52) (395) (603) (518) Reclassifications 0 0 0 (3) 3 0 0 Foreign currency translation / unwind of discount 44 10 0 10 0 64 (12) Balance at the end of the year 861 115 0 227 932 2,135 2,475 1 Provisions, if any, for matters described in this disclosure are recorded in Global Wealth Management (item 3 and item 4) and Group Functions (item 2). Provisions, if any, for the matters described in items 1 and 6 of this disclosure are allocated between Global Wealth Management and Personal & Corporate Banking, and provisions, if any, for the matters described in this disclosure in item 5 are allocated between the Investment Bank and Group Functions.

Other financial and non-finan_4

Other financial and non-financial liabilities (Tables)	12 Months Ended
Other financial and non-financial liabilities (Tables)	Dec. 31, 2020
Other financial liabilities measured at amortized cost
Disclosure Of Other Liabilities [Line Items]
Disclosure Of Other Liabilities Explanatory	USD million 31.12.20 31.12.19 Other accrued expenses 1,696 1,928 Accrued interest expenses 1,355 1,562 Settlement and clearing accounts 1,199 1,379 Lease liabilities 3,927 3,943 Other 1,553 900 Total other financial liabilities measured at amortized cost 9,729 9,712
Other financial liabilities designated at fair value
Disclosure Of Other Liabilities [Line Items]
Disclosure Of Other Liabilities Explanatory	USD million 31.12.20 31.12.19 Financial liabilities related to unit-linked investment contracts 20,975 28,145 Securities financing transactions 7,317 5,742 Over-the-counter debt instruments 2,060 2,022 Other 35 31 Total other financial liabilities designated at fair value 30,387 35,940 of which: life-to-date own credit (gain) / loss (36) (4)
Other non-financial liabilities
Disclosure Of Other Liabilities [Line Items]
Disclosure Of Other Liabilities Explanatory	USD million 31.12.20 31.12.19 Compensation-related liabilities 1,2 7,468 6,855 of which: Deferred Contingent Capital Plan 1,858 1,855 of which: financial advisor compensation plans 2 1,500 1,506 of which: other compensation plans 2,740 2,310 of which: net defined benefit liability 722 633 of which: other compensation-related liabilities 3 648 552 Deferred tax liabilities 564 311 Current tax liabilities 1,009 852 VAT and other tax payables 523 475 Deferred income 228 141 Other 61 202 Total other non-financial liabilities 9,854 8,837 1 In 2020, UBS modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees. Refer to Note 1b for more information. 2 Comparative-period information has been restated. Refer to Note 1b for more information. 3 Includes liabilities for payroll taxes and untaken vacation.
UBS AG \| Other financial liabilities measured at amortized cost
Disclosure Of Other Liabilities [Line Items]
Disclosure Of Other Liabilities Explanatory	USD million 31.12.20 31.12.19 Other accrued expenses 1,508 1,697 Accrued interest expenses 1,382 1,596 Settlement and clearing accounts 1,181 1,368 Lease liabilities 3,821 3,858 Other 1 2,530 1,854 Total other financial liabilities measured at amortized cost 10,421 10,373 1 In 2020 UBS AG modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees. Refer to Note 1b for more information.
UBS AG \| Other financial liabilities designated at fair value
Disclosure Of Other Liabilities [Line Items]
Disclosure Of Other Liabilities Explanatory	USD million 31.12.20 31.12.19 Financial liabilities related to unit-linked investment contracts 20,975 28,145 Securities financing transactions 7,317 5,742 Over-the-counter debt instruments 2,060 2,022 Funding from UBS Group AG and its subsidiaries 1,375 217 Other 46 31 Total other financial liabilities designated at fair value 31,773 36,157 of which: life-to-date own credit (gain) / loss 148 6
UBS AG \| Other non-financial liabilities
Disclosure Of Other Liabilities [Line Items]
Disclosure Of Other Liabilities Explanatory	USD million 31.12.20 31.12.19 Compensation-related liabilities 1 4,776 4,339 of which: financial advisor compensation plans 1 1,497 1,502 of which: other compensation plans 2,034 1,750 of which: net defined benefit liability 711 629 of which: other compensation-related liabilities 2 534 458 Deferred tax liabilities 558 311 Current tax liabilities 943 780 VAT and other tax payables 470 445 Deferred income 212 134 Other 61 202 Total other non-financial liabilities 7,018 6,211 1 Comparative-period information has been restated. Refer to Note 1b for more information. 2 Includes liabilities for payroll taxes and untaken vacation.

Expected credit loss measurem_2

Expected credit loss measurement (Tables)	12 Months Ended
Expected credit loss measurement (Tables)	Dec. 31, 2020
Disclosure Of Financial Assets [Line Item]
Disclosure Of Credit Loss Expense Recovery Explanatory	Credit loss (expense) / release USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions Total For the year ended 31.12.20 Stages 1 and 2 (48) (129) 0 (88) 0 (266) Stage 3 (40) (128) (2) (217) (42) (429) Total credit loss (expense) / release (88) (257) (2) (305) (42) (694) For the year ended 31.12.19 Stages 1 and 2 3 23 0 (4) 0 22 Stage 3 (23) (44) 0 (26) (7) (100) Total credit loss (expense) / release (20) (21) 0 (30) (7) (78) For the year ended 31.12.18 Stages 1 and 2 0 0 0 (9) (1) (9) Stage 3 (15) (56) 0 (29) (8) (109) Total credit loss (expense) / release (15) (56) 0 (38) (8) (118)
Disclosure Of Key Macro Economic Variables Explanatory	Scenario assumptions One year Three years cumulative 31.12.20 Baseline Severe downside Baseline Severe downside Real GDP growth (% change) United States 2.7 (5.9) 9.1 (3.8) Eurozone 2.5 (8.7) 9.9 (10.3) Switzerland 3.3 (6.6) 9.0 (5.7) Consumer price index (% change) United States 1.7 (1.2) 5.5 0.4 Eurozone 1.4 (1.3) 3.9 (1.7) Switzerland 0.3 (1.8) 0.9 (1.6) Unemployment rate (end-of-period level, %) 1 United States 5.5 12.1 4.5 9.9 Eurozone 9.5 14.1 8.0 16.4 Switzerland 3.8 6.1 3.2 6.8 Fixed income: 10-year government bonds (change in yields, basis points) USD 22.0 (50.0) 46.0 (15.0) EUR 4.0 (35.0) 21.0 (25.0) CHF 13.0 (70.0) 31.0 (35.0) Equity indices (% change) S&P 500 (2.9) (50.2) (1.7) (40.1) EuroStoxx 50 3.8 (57.6) 13.5 (50.4) SPI (0.8) (53.6) 5.8 (44.2) Swiss real estate (% change) Single-Family Homes 3.4 (17.0) 7.1 (30.0) Other real estate (% change) United States (S&P / Case-Shiller) 2.5 (15.3) 9.2 (28.7) Eurozone (House Price Index) 1.1 (22.9) 7.2 (35.4) 1 2020 unemployment rate is presented as an end-of-period level. 2019 unemployment rate was presented as a change in levels. The 2020 change in level would have been: One year shock in the baseline scenario: United States: -3.5%, Eurozone: 0.4% and Switzerland: 0.4% and for the global crisis scenario: United States: 3.1%, Eurozone: 5.0% and Switzerland: 2.6%. Three year shock in the baseline scenario: United States: -4.5%, Eurozone: -1.2% and Switzerland: -0.2% and for the global crisis scenario: United States: 0.9%, Eurozone: 7.2% and Switzerland: 3.4% Scenario assumptions One year Three years cumulative 31.12.19 Baseline Severe downside Baseline Severe downside Real GDP growth (% change) United States 1.9 (6.4) 6.4 (4.3) Eurozone 1.0 (9.1) 2.8 (10.8) Switzerland 1.5 (7.0) 4.8 (6.2) Consumer price index (% change) United States 1.8 (1.2) 6.2 0.4 Eurozone 1.3 (1.3) 4.3 (1.7) Switzerland 0.8 (1.8) 2.7 (1.6) Unemployment rate (change, percentage points) United States (0.4) 5.7 (0.5) 5.6 Eurozone (0.1) 5.6 (0.2) 7.9 Switzerland 0.1 2.6 0.3 3.6 Fixed income: 10-year government bonds (change in yields, basis points) USD 0.2 (100.0) 10.1 (75.0) EUR 8.4 (30.0) 28.2 (20.0) CHF 9.5 (70.0) 30.0 (35.0) Equity indices (% change) S&P 500 3.5 (53.0) 9.5 (42.9) EuroStoxx 50 0.5 (60.0) 4.4 (52.9) SPI 1.4 (56.2) 5.3 (46.8) Swiss real estate (% change) Single-Family Homes 0.1 (15.2) 2.3 (27.0) Other real estate (% change) United States (S&P / Case-Shiller) 4.0 (13.3) 16.7 (23.4) Eurozone (House Price Index) 1.2 (23.0) 2.2 (33.2)
Disclosure Of Credit Risk Exposure Movement Explanatory	Development of ECL allowances and provisions USD million Total Stage 1 Stage 2 Stage 3 Balance as of 31 December 2019 (1,029) (181) (160) (688) Net movement from new and derecognized transactions 1 (28) (90) 17 46 of which: Private clients with mortgages (2) (3) 2 0 of which: Real estate financing (3) (5) 2 0 of which: Large corporate clients (32) (29) (4) 0 of which: SME clients (16) (14) (3) 0 of which: Other 26 (39) 20 46 of which: Securities financing transactions REIT 32 (1) 15 17 of which: Loans to financial advisors 9 (1) 9 0 of which: Lombard loans 23 (6) 0 29 of which Financial intermediaries (20) (15) (5) 0 Remeasurements with stage transfers 2 (427) 45 (134) (338) of which: Private clients with mortgages (19) (2) (17) 0 of which: Real estate financing (6) 3 (9) 0 of which: Large corporate clients (224) 34 (83) (175) of which: SME clients (43) (1) (11) (31) of which: Other (134) 11 (14) (131) of which: Securities financing transactions REIT (36) 0 (18) (19) of which: Loans to financial advisors (12) 7 (7) (11) of which: Lombard loans (36) 0 0 (36) of which Commodity Trade Finance (59) 0 0 (59) Remeasurements without stage transfers 3 (271) (88) (47) (136) of which: Private clients with mortgages (34) (19) (8) (7) of which: Real estate financing (14) (4) (11) 1 of which: Large corporate clients (149) (53) (17) (79) of which: SME clients (13) 0 (7) (6) of which: Other (60) (11) (4) (44) of which: Loans to financial advisors (18) (12) (3) (3) of which: Lombard loans (3) 6 0 (9) of which: Credit cards (12) 0 0 (12) Model changes 4 32 21 11 0 Total ECL allowance movements with profit or loss impact 5 (694) (112) (154) (429) Write-offs, FX and other movements (without profit or loss impact) 6 254 (14) (19) 287 Balance as of 31 December 2020 (1,468) (306) (333) (829) 1 Represents the increase and decrease in allowances and provisions resulting from financial instruments (including guarantees and facilities) that were newly originated, purchased or renewed and from the final derecognition of loans or facilities on their maturity date or earlier. 2 Represents the remeasurement between 12-month and lifetime ECL due to stage transfers. 3 Represents the change in allowances and provisions related to changes in model inputs or assumptions, including changes in forward-looking macroeconomic conditions, changes in the exposure profile, PD and LGD changes, and unwinding of the time value. 4 Represents the change in the allowances and provisions related to changes in models and methodologies. 5 Includes ECL movements from new and derecognized transactions, remeasurement changes, model and methodology changes. 6 Represents the decrease in allowances and provisions resulting from write-offs of the ECL allowance against the gross carrying amount when all or part of a financial asset is deemed uncollectible or forgiven and movements in foreign exchange rates. USD million Total Stage 1 Stage 2 Stage 3 Balance as of 31 December 2018 (1,054) (176) (183) (695) Net movement from new and derecognized transactions 1 (53) (66) 10 3 of which: Private clients with mortgages (1) (4) 3 0 of which: Real estate financing (3) (5) 2 0 of which: Large corporate clients (6) (14) 8 0 of which: SME clients (16) (14) (2) 0 Remeasurements with stage transfers 2 (125) 14 (35) (105) of which: Private clients with mortgages (5) 1 (5) (1) of which: Real estate financing 5 4 1 0 of which: Large corporate clients (45) 4 (11) (38) of which: SME clients (64) 2 (11) (55) Remeasurements without stage transfers 3 73 31 41 1 of which: Private clients with mortgages 22 2 30 (9) of which: Real estate financing 1 0 0 1 of which: Large corporate clients (24) (10) 0 (14) of which: SME clients 35 9 10 17 Model changes 4 26 17 9 0 Total ECL allowance movements with profit or loss impact 5 (78) (4) 25 (100) Write-offs, FX and other movements (without profit or loss impact) 6 105 (1) (2) 108 Balance as of 31 December 2019 (1,029) (181) (160) (688) 1 Represents the increase and decrease in allowances and provisions resulting from financial instruments (including guarantees and facilities) that were newly originated, purchased or renewed and from the final derecognition of loans or facilities on their maturity date or earlier. 2 Represents the remeasurement between 12-month and lifetime ECL due to stage transfers. 3 Represents the change in allowances and provisions related to changes in model inputs or assumptions, including changes in forward-looking macroeconomic conditions, changes in the exposure profile, PD and LGD changes, and unwinding of the time value. 4 Represents the change in the allowances and provisions related to changes in models and methodologies. 5 To align to the table format for the 2020 ECL allowance and provision movement, UBS has adjusted the 2019 table format. Includes ECL movements from new and derecognized transactions, remeasurement changes, model and methodology changes. 6 Represents the decrease in allowances and provisions resulting from write-offs of the ECL allowance against the gross carrying amount when all or part of a financial asset is deemed uncollectible or forgiven and movements in foreign exchange rates.
Disclosure Of Credit Risk Exposure Categories Explanatory	Stage 2 classification by trigger ECL allowances / provisions as of 31 December 2020 USD million Stage 2 of which: PD layer of which: watch list of which: ≥30 days past due On-and off-balance sheet (333) (252) (41) (40) of which: Private clients with mortgages (93) (83) 0 (11) of which: Real estate financing (53) (45) (2) (6) of which: Large corporate clients (110) (89) (20) 0 of which: SME clients (38) (16) (16) (5) of which: Financial intermediaries and hedge funds (19) (19) 0 0 of which: Loans to financial advisors (5) 0 (1) (4) of which: Credit cards (14) 0 0 (14) of which: Other (2) 0 (2) 0
Disclosure Of Maximum Exposure To Credit Risk Explanatory	Maximum exposure to credit risk 31.12.20 Collateral 1 Credit enhancements 1 Exposure to credit risk after collateral and credit enhancements USD billion Maximum exposure to credit risk Cash collateral received Collateralized by securities Secured by real estate Other collateral 2 Netting Credit derivative contracts Guarantees Financial assets measured at amortized cost on the balance sheet Cash and balances at central banks 158.2 158.2 Loans and advances to banks 3 15.4 0.1 15.3 Receivables from securities financing transactions 74.2 0.0 67.1 7.0 0.0 Cash collateral receivables on derivative instruments 4,5 32.7 21.1 11.6 Loans and advances to customers 6 379.5 25.8 118.2 194.6 21.7 4.4 14.8 Other financial assets measured at amortized cost 27.2 0.1 0.2 1.3 25.5 Total financial assets measured at amortized cost 687.3 26.0 185.7 194.6 30.1 21.1 0.0 4.4 225.5 Financial assets measured at fair value through other comprehensive income – debt 8.3 8.3 Total maximum exposure to credit risk reflected on the balance sheet in scope of ECL 695.6 26.0 185.7 194.6 30.1 21.1 0.0 4.4 233.7 Guarantees 7 17.0 0.7 5.0 0.2 1.7 2.5 7.0 Loan commitments 7 41.2 0.0 4.2 2.1 6.8 0.4 2.4 25.3 Forward starting transactions, reverse repurchase and securities borrowing agreements 3.2 3.2 0.0 Committed unconditionally revocable credit lines 40.1 0.1 10.3 6.2 2.7 0.0 20.7 Total maximum exposure to credit risk not reflected on the balance sheet, in scope of ECL 101.6 0.8 22.7 8.5 11.2 0.0 0.4 4.9 53.0 31.12.19 Collateral 1 Credit enhancements 1 Exposure to credit risk after collateral and credit enhancements USD billion Maximum exposure to credit risk Cash collateral received Collateralized by securities Secured by real estate Other collateral 2 Netting Credit derivative contracts Guarantees Financial assets measured at amortized cost on the balance sheet Cash and balances at central banks 107.1 107.1 Loans and advances to banks 3 12.4 0.0 12.4 Receivables from securities financing transactions 84.2 77.6 5.8 0.8 Cash collateral receivables on derivative instruments 4,5 23.3 14.4 8.9 Loans and advances to customers 6 326.8 18.4 101.4 174.7 17.1 1.1 14.0 Other financial assets measured at amortized cost 23.0 0.1 0.4 0.0 1.3 21.1 Total financial assets measured at amortized cost 576.8 18.6 179.4 174.7 24.3 14.4 0.0 1.1 164.4 Financial assets measured at fair value through other comprehensive income – debt 6.3 6.3 Total maximum exposure to credit risk reflected on the balance sheet in scope of ECL 583.2 18.6 179.4 174.7 24.3 14.4 0.0 1.1 170.7 Guarantees 7 18.1 1.0 3.0 0.1 1.7 2.5 9.8 Loan commitments 7 27.5 0.2 1.9 1.3 5.8 0.2 0.2 18.0 Forward starting transactions, reverse repurchase and securities borrowing agreements 1.7 1.7 0.0 Committed unconditionally revocable credit lines 35.1 0.3 8.3 4.9 3.6 0.0 17.9 Total maximum exposure to credit risk not reflected on the balance sheet, in scope of ECL 82.3 1.5 14.9 6.3 11.0 0.0 0.2 2.8 45.7 1 Of which: USD 1,983 million for 31 December 2020 (31 December 2019: USD 1,720 million) relates to total credit-impaired financial assets measured at amortized cost and USD 154 million for 31 December 2020 (31 December 2019: USD 27 million) to total off-balance sheet financial instruments and other credit lines for credit-impaired positions. 2 Includes but is not limited to life insurance contracts, inventory, mortgage loans, gold and other commodities. 3 Loans and advances to banks include amounts held with third-party banks on behalf of clients. The credit risk associated with these balances may be borne by those clients. 4 Included within Cash collateral receivables on derivative instruments are margin balances due from exchanges or clearing houses. Some of these margin balances reflect amounts transferred on behalf of clients who retain the associated credit risk. 5 The amount shown in the “Netting” column represents the netting potential not recognized on the balance sheet. Refer to Note 22 for more information. 6 Collateral arrangements generally incorporate a range of collateral, including cash, securities, property and other collateral. 7 The amount shown in the “Guarantees” column includes sub-participations.
Disclosure Of Internal Credit Exposures Explanatory	Financial assets subject to credit risk by rating category USD million 31.12.20 Rating category 1 0–1 2–3 4–5 6–8 9–13 Credit-impaired (defaulted) Total gross carrying amount ECL allowances Net carrying amount (maximum exposure to credit risk) Financial assets measured at amortized cost Cash and balances at central banks 156,250 1,981 0 0 0 0 158,231 0 158,231 of which: stage 1 156,250 1,981 0 0 0 0 158,231 0 158,231 Loans and advances to banks 543 12,129 1,344 1,182 260 1 15,460 (16) 15,444 of which: stage 1 543 12,074 1,277 1,145 231 0 15,269 (9) 15,260 of which: stage 2 0 55 67 37 29 0 189 (5) 184 of which: stage 3 0 0 0 0 0 1 1 (1) 0 Receivables from securities financing transactions 22,998 16,009 15,367 17,995 1,842 0 74,212 (2) 74,210 of which: stage 1 22,998 16,009 15,367 17,995 1,842 0 74,212 (2) 74,210 Cash collateral receivables on derivative instruments 8,196 13,477 7,733 3,243 88 0 32,737 0 32,737 of which: stage 1 8,196 13,477 7,733 3,243 88 0 32,737 0 32,737 Loans and advances to customers 5,813 214,307 67,270 69,217 21,038 2,943 380,589 (1,060) 379,528 of which: stage 1 5,813 212,970 63,000 59,447 15,860 0 357,090 (142) 356,948 of which: stage 2 0 1,338 4,269 9,770 5,178 0 20,556 (215) 20,341 of which: stage 3 0 0 0 0 0 2,943 2,943 (703) 2,240 Other financial assets measured at amortized cost 15,404 4,018 280 6,585 481 560 27,327 (133) 27,194 of which: stage 1 15,404 4,015 269 6,334 389 0 26,410 (34) 26,377 of which: stage 2 0 3 11 251 91 0 357 (9) 348 of which: stage 3 0 0 0 0 0 560 560 (90) 469 Total financial assets measured at amortized cost 209,204 261,922 91,993 98,223 23,709 3,505 688,556 (1,211) 687,345 On-balance sheet financial instruments Financial assets measured at FVOCI – debt instruments 3,212 5,014 0 32 0 0 8,258 0 8,258 Total on-balance sheet financial instruments 212,417 266,936 91,993 98,255 23,709 3,505 696,815 (1,211) 695,603 Financial assets subject to credit risk by rating category USD million 31.12.19 Rating category 1 0–1 2–3 4–5 6–8 9–13 Credit-impaired (defaulted) Total gross carrying amount ECL allowances Net carrying amount (maximum exposure to credit risk) Financial assets measured at amortized cost Cash and balances at central banks 105,195 1,873 0 0 0 0 107,068 0 107,068 of which: stage 1 105,195 1,873 0 0 0 0 107,068 0 107,068 Loans and advances to banks 309 9,832 1,326 687 298 1 12,454 (6) 12,447 of which: stage 1 309 9,832 1,326 677 228 0 12,371 (4) 12,367 of which: stage 2 0 0 0 10 71 0 81 (1) 80 of which: stage 3 0 0 0 0 0 1 1 (1) 0 Receivables from securities financing transactions 21,089 16,889 14,366 28,815 3,088 0 84,246 (2) 84,245 of which: stage 1 21,089 16,889 14,366 28,815 3,088 0 84,246 (2) 84,245 Cash collateral receivables on derivative instruments 4,899 10,553 5,033 2,765 39 0 23,289 0 23,289 of which: stage 1 4,899 10,553 5,033 2,765 39 0 23,289 0 23,289 Loans and advances to customers 1,744 174,982 59,240 70,528 18,748 2,308 327,550 (764) 326,786 of which: stage 1 1,744 174,328 56,957 62,435 14,117 0 309,581 (82) 309,499 of which: stage 2 0 655 2,283 8,093 4,631 0 15,661 (123) 15,538 of which: stage 3 0 0 0 0 0 2,308 2,308 (559) 1,749 Other financial assets measured at amortized cost 13,031 1,560 390 7,158 312 672 23,123 (143) 22,980 of which: stage 1 13,031 1,549 381 6,747 280 0 21,988 (35) 21,953 of which: stage 2 0 11 9 412 32 0 463 (13) 451 of which: stage 3 0 0 0 0 0 672 672 (95) 576 Total financial assets measured at amortized cost 146,267 215,690 80,354 109,952 22,485 2,981 577,730 (915) 576,815 On-balance sheet financial instruments Financial assets measured at FVOCI – debt instruments 5,854 450 0 41 0 0 6,345 0 6,345 Total on-balance sheet financial instruments 152,120 216,139 80,354 109,994 22,485 2,981 584,075 (915) 583,159
Disclosure Of Off Balance Sheet Positions By Rating Category Explanatory	Off-balance sheet positions subject to expected credit loss by rating category USD million 31.12.20 Rating category 1 0–1 2–3 4–5 6–8 9–13 Credit-impaired (defaulted) Total off - balance sheet exposure (maximum exposure to credit risk) ECL provisions Off-balance sheet financial instruments Guarantees 3,482 4,623 3,522 4,293 991 170 17,081 (63) of which: stage 1 3,482 4,219 2,688 3,558 739 0 14,687 (14) of which: stage 2 0 404 834 736 252 0 2,225 (15) of which: stage 3 0 0 0 0 0 170 170 (34) Irrevocable loan commitments 3,018 14,516 8,583 9,302 5,850 104 41,372 (142) of which: stage 1 3,018 13,589 6,873 8,739 4,676 0 36,894 (74) of which: stage 2 0 927 1,711 563 1,174 0 4,374 (68) of which: stage 3 0 0 0 0 0 104 104 0 Forward starting reverse repurchase and securities borrowing agreements 82 150 0 3,015 0 0 3,247 0 Total off-balance sheet financial instruments 6,583 19,289 12,105 16,610 6,840 273 61,700 (205) Other credit lines Committed unconditionally revocable credit lines 574 13,505 5,958 8,488 11,501 108 40,134 (50) of which: stage 1 574 12,940 4,517 6,609 10,593 0 35,233 (29) of which: stage 2 0 565 1,441 1,879 908 0 4,792 (21) of which: stage 3 0 0 0 0 0 108 108 0 Irrevocable committed prolongation of existing loans 14 1,349 931 632 357 0 3,282 (2) of which: stage 1 14 1,349 930 630 355 0 3,277 (2) of which: stage 2 0 1 1 2 1 0 5 0 of which: stage 3 0 0 0 0 0 0 0 0 Total other credit lines 588 14,854 6,889 9,119 11,858 109 43,416 (52) 1 Refer to the “Internal UBS rating scale and mapping of external ratings” table in the “Risk management and control” section of this report for more information on rating categories. Off-balance sheet positions subject to expected credit loss by rating category USD million 31.12.19 Rating category 1 0–1 2–3 4–5 6–8 9–13 Credit-impaired (defaulted) Total off - balance sheet exposure (maximum exposure to credit risk) ECL provisions Off-balance sheet financial instruments Guarantees 857 4,932 6,060 5,450 761 82 18,142 (42) of which: stage 1 857 4,931 6,048 5,218 704 0 17,757 (8) of which: stage 2 0 1 12 233 57 0 304 (1) of which: stage 3 0 0 0 0 0 82 82 (33) Irrevocable loan commitments 2,548 10,068 4,862 5,859 4,160 50 27,547 (35) of which: stage 1 2,548 10,068 4,862 5,722 3,878 0 27,078 (30) of which: stage 2 0 0 0 137 282 0 419 (5) of which: stage 3 0 0 0 0 0 50 50 0 Forward starting reverse repurchase and securities borrowing agreements 0 672 50 936 0 0 1,657 0 Total off-balance sheet financial instruments 3,405 15,672 10,972 12,245 4,922 132 47,347 (77) Other credit lines Committed unconditionally revocable credit lines 632 12,459 6,231 7,169 8,554 46 35,092 (34) of which: stage 1 628 12,422 6,120 6,789 7,889 0 33,848 (17) of which: stage 2 4 37 111 380 665 0 1,197 (17) of which: stage 3 0 0 0 0 0 46 46 0 Irrevocable committed prolongation of existing loans 25 1,399 870 633 359 4 3,289 (3) of which: stage 1 25 1,399 870 633 359 0 3,285 (3) of which: stage 2 0 0 0 0 0 0 0 0 of which: stage 3 0 0 0 0 0 4 4 0 Total other credit lines 657 13,858 7,101 7,801 8,913 50 38,381 (37) 1 Refer to the “Internal UBS rating scale and mapping of external ratings” table in the “Risk management and control” section of this report for more information on rating categories.
Scenario Sensitivity Analysis Explanatory	USD million Baseline Severe downside Weighted average Change in key parameters Fixed income: 10-year government bonds (absolute change) –0.5% (1.36) (1.84) (1.93) +0.5% 2.10 3.19 3.23 +1.00% 5.69 6.86 7.19 Unemployment rate (absolute change) –1.00% (7.40) (63.01) (27.83) –0.5% (3.78) (33.54) (15.67) +0.5% 4.15 36.97 16.99 +1.00% 8.50 75.93 33.74 Real GDP growth (relative change) -2.00% 3.72 16.14 9.10 -1.00% 1.86 9.84 5.09 +1.00% (1.46) (3.30) (2.36) +2.00% (2.97) (9.44) (5.93) House Price Index (relative change) –5.00% 8.04 144.34 51.46 –2.50% 3.45 65.80 23.28 +2.50% (2.79) (56.60) (19.09) +5.00% (5.16) (105.61) (35.29) Equity (S&P500, EuroStoxx, SMI) (relative change) –10.00% 3.94 9.66 6.78 –5.00% 1.91 4.29 3.34 +5.00% (8.30) (4.23) (7.27) +10.00% (10.14) (8.58) (10.22) Actual ECL allowances and provisions (as per Note 9) Pro forma ECL allowances and provisions, assuming application of 100% weighting Pro forma ECL allowances and provisions, assuming all positions being subject to lifetime ECL Scenarios Weighted average Baseline Severe downside Weighted average USD million, except where indicated ECL in % of baseline ECL in % of baseline ECL in % of baseline ECL in % of baseline Segmentation Private clients with mortgages (131) 244 (54) 100 (302) 562 (385) 717 Real estate financing (76) 138 (55) 100 (123) 224 (131) 237 Large corporate clients (206) 149 (138) 100 (298) 216 (307) 222 SME clients (74) 115 (64) 100 (93) 144 (129) 200 Other segments (152) 116 (131) 100 (183) 140 (385) 294 Total (639) 145 (442) 100 (999) 226 (1,336) 302
UBS AG
Disclosure Of Financial Assets [Line Item]
Disclosure Of Credit Loss Expense Recovery Explanatory	Credit loss (expense) / release USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions Total For the year ended 31.12.20 Stages 1 and 2 (48) (129) 0 (88) 0 (266) Stage 3 (40) (128) (2) (217) (42) (429) Total credit loss (expense) / release (88) (257) (2) (305) (42) (695) For the year ended 31.12.19 Stages 1 and 2 3 23 0 (4) 0 22 Stage 3 (23) (44) 0 (26) (7) (100) Total credit loss (expense) / release (20) (21) 0 (30) (7) (78) For the year ended 31.12.18 Stages 1 and 2 0 0 0 (9) 0 (9) Stage 3 (15) (56) 0 (29) (8) (109) Total credit loss (expense) / release (15) (56) 0 (38) (8) (117)
Disclosure Of Key Macro Economic Variables Explanatory	Scenario assumptions One year Three years cumulative 31.12.20 Baseline Severe downside Baseline Severe downside Real GDP growth (% change) United States 2.7 (5.9) 9.1 (3.8) Eurozone 2.5 (8.7) 9.9 (10.3) Switzerland 3.3 (6.6) 9.0 (5.7) Consumer price index (% change) United States 1.7 (1.2) 5.5 0.4 Eurozone 1.4 (1.3) 3.9 (1.7) Switzerland 0.3 (1.8) 0.9 (1.6) Unemployment rate (end-of-period level, %) 1 United States 5.5 12.1 4.5 9.9 Eurozone 9.5 14.1 8.0 16.4 Switzerland 3.8 6.1 3.2 6.8 Fixed income: 10-year government bonds (change in yields, basis points) USD 22.0 (50.0) 46.0 (15.0) EUR 4.0 (35.0) 21.0 (25.0) CHF 13.0 (70.0) 31.0 (35.0) Equity indices (% change) S&P 500 (2.9) (50.2) (1.7) (40.1) EuroStoxx 50 3.8 (57.6) 13.5 (50.4) SPI (0.8) (53.6) 5.8 (44.2) Swiss real estate (% change) Single-Family Homes 3.4 (17.0) 7.1 (30.0) Other real estate (% change) United States (S&P / Case-Shiller) 2.5 (15.3) 9.2 (28.7) Eurozone (House Price Index) 1.1 (22.9) 7.2 (35.4) 1 2020 unemployment rate is presented as an end-of-period level. 2019 unemployment rate was presented as a change in levels. The 2020 change in level would have been: One year shock in the baseline scenario: United States: -3.5%, Eurozone: 0.4% and Switzerland: 0.4% and for the global crisis scenario: United States: 3.1%, Eurozone: 5.0% and Switzerland: 2.6%. Three year shock in the baseline scenario: United States: -4.5%, Eurozone: -1.2% and Switzerland: -0.2% and for the global crisis scenario: United States: 0.9%, Eurozone: 7.2% and Switzerland: 3.4% Scenario assumptions One year Three years cumulative 31.12.19 Baseline Severe downside Baseline Severe downside Real GDP growth (% change) United States 1.9 (6.4) 6.4 (4.3) Eurozone 1.0 (9.1) 2.8 (10.8) Switzerland 1.5 (7.0) 4.8 (6.2) Consumer price index (% change) United States 1.8 (1.2) 6.2 0.4 Eurozone 1.3 (1.3) 4.3 (1.7) Switzerland 0.8 (1.8) 2.7 (1.6) Unemployment rate (change, percentage points) United States (0.4) 5.7 (0.5) 5.6 Eurozone (0.1) 5.6 (0.2) 7.9 Switzerland 0.1 2.6 0.3 3.6 Fixed income: 10-year government bonds (change in yields, basis points) USD 0.2 (100.0) 10.1 (75.0) EUR 8.4 (30.0) 28.2 (20.0) CHF 9.5 (70.0) 30.0 (35.0) Equity indices (% change) S&P 500 3.5 (53.0) 9.5 (42.9) EuroStoxx 50 0.5 (60.0) 4.4 (52.9) SPI 1.4 (56.2) 5.3 (46.8) Swiss real estate (% change) Single-Family Homes 0.1 (15.2) 2.3 (27.0) Other real estate (% change) United States (S&P / Case-Shiller) 4.0 (13.3) 16.7 (23.4) Eurozone (House Price Index) 1.2 (23.0) 2.2 (33.2)
Disclosure Of Credit Risk Exposure Movement Explanatory	Development of ECL allowances and provisions USD million Total Stage 1 Stage 2 Stage 3 Balance as of 31 December 2019 (1,029) (181) (160) (688) Net movement from new and derecognized transactions 1 (28) (90) 17 46 of which: Private clients with mortgages (2) (3) 2 0 of which: Real estate financing (3) (5) 2 0 of which: Large corporate clients (32) (29) (4) 0 of which: SME clients (16) (14) (3) 0 of which: Other 26 (39) 20 46 of which: Securities financing transactions REIT 32 (1) 15 17 of which: Loans to financial advisors 9 (1) 9 0 of which: Lombard loans 23 (6) 0 29 of which Financial intermediaries (20) (15) (5) 0 Remeasurements with stage transfers 2 (427) 45 (134) (338) of which: Private clients with mortgages (19) (2) (17) 0 of which: Real estate financing (6) 3 (9) 0 of which: Large corporate clients (224) 34 (83) (175) of which: SME clients (43) (1) (11) (31) of which: Other (134) 11 (14) (131) of which: Securities financing transactions REIT (36) 0 (18) (19) of which: Loans to financial advisors (12) 7 (7) (11) of which: Lombard loans (36) 0 0 (36) of which Commodity Trade Finance (59) 0 0 (59) Remeasurements without stage transfers 3 (271) (88) (47) (136) of which: Private clients with mortgages (34) (19) (8) (7) of which: Real estate financing (14) (4) (11) 1 of which: Large corporate clients (149) (53) (17) (79) of which: SME clients (13) 0 (7) (6) of which: Other (60) (11) (4) (44) of which: Loans to financial advisors (18) (12) (3) (3) of which: Lombard loans (3) 6 0 (9) of which: Credit cards (12) 0 0 (12) Model changes 4 32 21 11 0 Total ECL allowance movements with profit or loss impact 5 (694) (112) (154) (429) Write-offs, FX and other movements (without profit or loss impact) 6 254 (14) (19) 287 Balance as of 31 December 2020 (1,468) (306) (333) (829) 1 Represents the increase and decrease in allowances and provisions resulting from financial instruments (including guarantees and facilities) that were newly originated, purchased or renewed and from the final derecognition of loans or facilities on their maturity date or earlier. 2 Represents the remeasurement between 12-month and lifetime ECL due to stage transfers. 3 Represents the change in allowances and provisions related to changes in model inputs or assumptions, including changes in forward-looking macroeconomic conditions, changes in the exposure profile, PD and LGD changes, and unwinding of the time value. 4 Represents the change in the allowances and provisions related to changes in models and methodologies. 5 Includes ECL movements from new and derecognized transactions, remeasurement changes, model and methodology changes. 6 Represents the decrease in allowances and provisions resulting from write-offs of the ECL allowance against the gross carrying amount when all or part of a financial asset is deemed uncollectible or forgiven and movements in foreign exchange rates. USD million Total Stage 1 Stage 2 Stage 3 Balance as of 31 December 2018 (1,054) (176) (183) (695) Net movement from new and derecognized transactions 1 (53) (66) 10 3 of which: Private clients with mortgages (1) (4) 3 0 of which: Real estate financing (3) (5) 2 0 of which: Large corporate clients (6) (14) 8 0 of which: SME clients (16) (14) (2) 0 Remeasurements with stage transfers 2 (125) 14 (35) (105) of which: Private clients with mortgages (5) 1 (5) (1) of which: Real estate financing 5 4 1 0 of which: Large corporate clients (45) 4 (11) (38) of which: SME clients (64) 2 (11) (55) Remeasurements without stage transfers 3 73 31 41 1 of which: Private clients with mortgages 22 2 30 (9) of which: Real estate financing 1 0 0 1 of which: Large corporate clients (24) (10) 0 (14) of which: SME clients 35 9 10 17 Model changes 4 26 17 9 0 Total ECL allowance movements with profit or loss impact 5 (78) (4) 25 (100) Write-offs, FX and other movements (without profit or loss impact) 6 105 (1) (2) 108 Balance as of 31 December 2019 (1,029) (181) (160) (688) 1 Represents the increase and decrease in allowances and provisions resulting from financial instruments (including guarantees and facilities) that were newly originated, purchased or renewed and from the final derecognition of loans or facilities on their maturity date or earlier. 2 Represents the remeasurement between 12-month and lifetime ECL due to stage transfers. 3 Represents the change in allowances and provisions related to changes in model inputs or assumptions, including changes in forward-looking macroeconomic conditions, changes in the exposure profile, PD and LGD changes, and unwinding of the time value. 4 Represents the change in the allowances and provisions related to changes in models and methodologies. 5 To align to the table format for the 2020 ECL allowance and provision movement, UBS has adjusted the 2019 table format. Includes ECL movements from new and derecognized transactions, remeasurement changes, model and methodology changes. 6 Represents the decrease in allowances and provisions resulting from write-offs of the ECL allowance against the gross carrying amount when all or part of a financial asset is deemed uncollectible or forgiven and movements in foreign exchange rates.
Disclosure Of Credit Risk Exposure Categories Explanatory	Stage 2 classification by trigger ECL allowances / provisions as of 31 December 2020 USD million Stage 2 of which: PD layer of which: watch list of which: ≥30 days past due On-and off-balance sheet (333) (252) (41) (40) of which: Private clients with mortgages (93) (83) 0 (11) of which: Real estate financing (53) (45) (2) (6) of which: Large corporate clients (110) (89) (20) 0 of which: SME clients (38) (16) (16) (5) of which: Financial intermediaries and hedge funds (19) (19) 0 0 of which: Loans to financial advisors (5) 0 (1) (4) of which: Credit cards (14) 0 0 (14) of which: Other (2) 0 (2) 0
Disclosure Of Maximum Exposure To Credit Risk Explanatory	Maximum exposure to credit risk 31.12.20 Collateral 1 Credit enhancements 1 Exposure to credit risk after collateral and credit enhancements USD billion Maximum exposure to credit risk Cash collateral received Collateralized by securities Secured by real estate Other collateral 2 Netting Credit derivative contracts Guarantees Financial assets measured at amortized cost on the balance sheet Cash and balances at central banks 158.2 158.2 Loans and advances to banks 3 15.3 0.1 15.2 Receivables from securities financing transactions 74.2 0.0 67.1 7.0 0.0 Cash collateral receivables on derivative instruments 4, 5 32.7 21.1 11.6 Loans and advances to customers 6 381.0 27.0 118.2 194.6 21.7 0.0 4.4 15.1 Other financial assets measured at amortized cost 27.2 0.1 0.2 0.0 1.3 25.5 Total financial assets measured at amortized cost 688.7 27.2 185.7 194.6 30.1 21.1 0.0 4.4 225.6 Financial assets measured at fair value through other comprehensive income – debt 8.3 8.3 Total maximum exposure to credit risk reflected on the balance sheet in scope of ECL 697.0 27.2 185.7 194.6 30.1 21.1 0.0 4.4 233.9 Guarantees 7 17.0 0.7 5.0 0.2 1.7 2.5 7.0 Loan commitments 7 41.2 0.0 4.2 2.1 6.8 0.4 2.4 25.3 Forward starting transactions, reverse repurchase and securities borrowing agreements 3.2 3.2 0.0 Committed unconditionally revocable credit lines 42.0 0.1 10.3 6.2 2.7 0.0 22.7 Total maximum exposure to credit risk not reflected on the balance sheet, in scope of ECL 103.5 0.8 22.7 8.5 11.2 0.0 0.4 4.9 54.9 31.12.19 Collateral 1 Credit enhancements 1 Exposure to credit risk after collateral and credit enhancements USD billion Maximum exposure to credit risk Cash collateral received Collateralized by securities Secured by real estate Other collateral 2 Netting Credit derivative contracts Guarantees Financial assets measured at amortized cost on the balance sheet Cash and balances at central banks 107.1 107.1 Loans and advances to banks 3 12.4 0.0 12.3 Receivables from securities financing transactions 84.2 77.6 5.8 0.8 Cash collateral receivables on derivative instruments 4, 5 23.3 14.4 8.9 Loans and advances to customers 6 328.0 19.4 101.4 174.7 17.1 1.1 14.3 Other financial assets measured at amortized cost 23.0 0.1 0.4 0.0 1.3 21.2 Total financial assets measured at amortized cost 578.0 19.5 179.4 174.7 24.3 14.4 0.0 1.1 164.6 Financial assets measured at fair value through other comprehensive income – debt 6.3 6.3 Total maximum exposure to credit risk reflected on the balance sheet in scope of ECL 584.3 19.5 179.4 174.7 24.3 14.4 0.0 1.1 171.0 Guarantees 7 18.1 1.0 3.0 0.1 1.7 2.5 9.8 Loan commitments 7 27.5 0.2 1.9 1.3 5.8 0.2 0.2 18.0 Forward starting transactions, reverse repurchase and securities borrowing agreements 1.7 1.7 0.0 Committed unconditionally revocable credit lines 36.9 0.3 8.3 4.9 3.6 0.0 19.8 Total maximum exposure to credit risk not reflected on the balance sheet, in scope of ECL 84.2 1.5 14.9 6.3 11.0 0.0 0.2 2.8 47.6 1 Of which: USD 1,983 million for 31 December 2020 (31 December 2019: USD 1,720 million) relates to total credit-impaired financial assets measured at amortized cost and USD 154 million for 31 December 2020 (31 December 2019: USD 27 million) to total off-balance sheet financial instruments and other credit lines for credit-impaired positions. 2 Includes but is not limited to life insurance contracts, inventory, mortgage loans, gold and other commodities. 3 Loans and advances to banks include amounts held with third-party banks on behalf of clients. The credit risk associated with these balances may be borne by those clients. 4 Included within Cash collateral receivables on derivative instruments are margin balances due from exchanges or clearing houses. Some of these margin balances reflect amounts transferred on behalf of clients who retain the associated credit risk. 5 The amount shown in the “Netting” column represents the netting potential not recognized on the balance sheet. Refer to Note 22 for more information. 6 Collateral arrangements generally incorporate a range of collateral, including cash, securities, property and other collateral. 7 The amount shown in the “Guarantees” column includes sub-participations.
Disclosure Of Internal Credit Exposures Explanatory	Financial assets subject to credit risk by rating category USD million 31.12.20 Rating category 1 0–1 2–3 4–5 6–8 9–13 Credit-impaired (defaulted) Total gross carrying amount ECL allowances Net carrying amount (maximum exposure to credit risk) Financial assets measured at amortized cost Cash and balances at central banks 156,250 1,981 0 0 0 0 158,231 0 158,231 of which: stage 1 156,250 1,981 0 0 0 0 158,231 0 158,231 Loans and advances to banks 543 12,029 1,344 1,182 260 1 15,360 (16) 15,344 of which: stage 1 543 11,974 1,277 1,145 231 0 15,170 (9) 15,160 of which: stage 2 0 55 67 37 29 0 189 (5) 184 of which: stage 3 0 0 0 0 0 1 1 (1) 0 Receivables from securities financing transactions 22,998 16,009 15,367 17,995 1,842 0 74,212 (2) 74,210 of which: stage 1 22,998 16,009 15,367 17,995 1,842 0 74,212 (2) 74,210 Cash collateral receivables on derivative instruments 8,196 13,477 7,733 3,243 88 0 32,737 0 32,737 of which: stage 1 8,196 13,477 7,733 3,243 88 0 32,737 0 32,737 Loans and advances to customers 5,813 215,755 67,270 69,217 21,038 2,943 382,036 (1,060) 380,977 of which: stage 1 5,813 214,418 63,000 59,447 15,860 0 358,538 (142) 358,396 of which: stage 2 0 1,338 4,269 9,770 5,178 0 20,556 (215) 20,341 of which: stage 3 0 0 0 0 0 2,943 2,943 (703) 2,240 Other financial assets measured at amortized cost 15,404 4,043 280 6,585 481 560 27,352 (133) 27,219 of which: stage 1 15,404 4,040 269 6,334 389 0 26,435 (34) 26,401 of which: stage 2 0 3 11 251 91 0 357 (9) 348 of which: stage 3 0 0 0 0 0 560 560 (90) 469 Total financial assets measured at amortized cost 209,204 263,295 91,993 98,223 23,709 3,505 689,929 (1,211) 688,717 On-balance sheet financial instruments Financial assets measured at FVOCI – debt instruments 3,212 5,014 0 32 0 0 8,258 0 8,258 Total on balance sheet financial instruments 212,417 268,309 91,993 98,255 23,709 3,505 698,187 (1,211) 696,976 Financial assets subject to credit risk by rating category USD million 31.12.19 Rating category 1 0–1 2–3 4–5 6–8 9–13 Credit-impaired (defaulted) Total gross carrying amount ECL allowances Net carrying amount (maximum exposure to credit risk) Financial assets measured at amortized cost Cash and balances at central banks 105,195 1,873 0 0 0 0 107,068 0 107,068 of which: stage 1 105,195 1,873 0 0 0 0 107,068 0 107,068 Loans and advances to banks 309 9,764 1,326 687 298 1 12,386 (6) 12,379 of which: stage 1 309 9,764 1,326 677 228 0 12,303 (4) 12,298 of which: stage 2 0 0 0 10 71 0 81 (1) 80 of which: stage 3 0 0 0 0 0 1 1 (1) 0 Receivables from securities financing transactions 21,089 16,889 14,366 28,815 3,088 0 84,246 (2) 84,245 of which: stage 1 21,089 16,889 14,366 28,815 3,088 0 84,246 (2) 84,245 Cash collateral receivables on derivative instruments 4,899 10,553 5,033 2,765 39 0 23,289 0 23,289 of which: stage 1 4,899 10,553 5,033 2,765 39 0 23,289 0 23,289 Loans and advances to customers 1,744 176,189 59,240 70,528 18,748 2,308 328,756 (764) 327,992 of which: stage 1 1,744 175,534 56,957 62,435 14,117 0 310,787 (82) 310,705 of which: stage 2 0 655 2,283 8,093 4,631 0 15,661 (123) 15,538 of which: stage 3 0 0 0 0 0 2,308 2,308 (559) 1,749 Other financial assets measured at amortized cost 13,030 1,592 390 7,158 312 672 23,154 (143) 23,012 of which: stage 1 13,030 1,581 381 6,747 280 0 22,019 (35) 21,985 of which: stage 2 0 11 9 412 32 0 463 (13) 451 of which: stage 3 0 0 0 0 0 672 672 (95) 576 Total financial assets measured at amortized cost 146,267 216,860 80,354 109,952 22,485 2,981 578,899 (915) 577,985 On-balance sheet financial instruments Financial assets measured at FVOCI – debt instruments 5,854 450 0 41 0 0 6,345 0 6,345 Total on balance sheet financial instruments 152,120 217,309 80,354 109,994 22,485 2,981 585,245 (915) 584,329
Disclosure Of Off Balance Sheet Positions By Rating Category Explanatory	Off-balance sheet positions subject to expected credit loss by rating category USD million 31.12.20 Rating category 1 0–1 2–3 4–5 6–8 9–13 Credit-impaired (defaulted) Total off - balance sheet exposure (maximum exposure to credit risk) ECL provisions Off-balance sheet financial instruments Guarantees 3,482 4,623 3,522 4,293 991 170 17,081 (63) of which: stage 1 3,482 4,219 2,688 3,558 739 0 14,687 (14) of which: stage 2 0 404 834 736 252 0 2,225 (15) of which: stage 3 0 0 0 0 0 170 170 (34) Irrevocable loan commitments 3,018 14,516 8,583 9,302 5,850 104 41,372 (142) of which: stage 1 3,018 13,589 6,873 8,739 4,676 0 36,894 (74) of which: stage 2 0 927 1,711 563 1,174 0 4,374 (68) of which: stage 3 0 0 0 0 0 104 104 0 Forward starting reverse repurchase and securities borrowing agreements 82 150 0 3,015 0 0 3,247 0 Total off balance sheet financial instruments 6,583 19,289 12,105 16,610 6,840 273 61,700 (205) Other credit lines Committed unconditionally revocable credit lines 574 15,448 5,958 8,488 11,501 108 42,077 (50) of which: stage 1 574 14,883 4,517 6,609 10,593 0 37,176 (29) of which: stage 2 0 565 1,441 1,879 908 0 4,792 (21) of which: stage 3 0 0 0 0 0 108 108 0 Irrevocable committed prolongation of existing loans 14 1,349 931 632 357 0 3,282 (2) of which: stage 1 14 1,349 930 630 355 0 3,277 (2) of which: stage 2 0 1 1 2 1 0 5 0 of which: stage 3 0 0 0 0 0 0 0 0 Total other credit lines 588 16,797 6,889 9,119 11,858 109 45,359 (52) 1 Refer to the “Internal UBS rating scale and mapping of external ratings” table in the “Risk management and control” section of this report for more information about rating categories. Off-balance sheet positions subject to expected credit loss by rating category USD million 31.12.19 Rating category 1 0–1 2–3 4–5 6–8 9–13 Credit-impaired (defaulted) Total off - balance sheet exposure (maximum exposure to credit risk) ECL provisions Off-balance sheet financial instruments Guarantees 857 4,932 6,060 5,450 761 82 18,142 (42) of which: stage 1 857 4,931 6,048 5,218 704 0 17,757 (8) of which: stage 2 0 1 12 233 57 0 304 (1) of which: stage 3 0 0 0 0 0 82 82 (33) Irrevocable loan commitments 2,548 10,068 4,862 5,859 4,160 50 27,547 (35) of which: stage 1 2,548 10,068 4,862 5,722 3,878 0 27,078 (30) of which: stage 2 0 0 0 137 282 0 419 (5) of which: stage 3 0 0 0 0 0 50 50 0 Forward starting reverse repurchase and securities borrowing agreements 0 672 50 936 0 0 1,657 0 Total off balance sheet financial instruments 3,405 15,672 10,972 12,245 4,922 132 47,347 (77) Other credit lines Committed unconditionally revocable credit lines 632 14,346 6,231 7,169 8,554 46 36,979 (34) of which: stage 1 632 14,309 6,120 6,789 7,885 0 35,735 (17) of which: stage 2 0 37 111 380 669 0 1,197 (17) of which: stage 3 0 0 0 0 0 46 46 0 Irrevocable committed prolongation of existing loans 25 1,399 870 633 359 4 3,289 (3) of which: stage 1 25 1,399 870 633 359 0 3,285 (3) of which: stage 2 0 0 0 0 0 0 0 0 of which: stage 3 0 0 0 0 0 4 4 0 Total other credit lines 657 15,745 7,101 7,801 8,913 50 40,268 (37) 1 Refer to the “Internal UBS rating scale and mapping of external ratings” table in the “Risk management and control” section of this report for more information about rating categories.
Scenario Sensitivity Analysis Explanatory	USD million Baseline Severe downside Weighted average Change in key parameters Fixed income: 10-year government bonds (absolute change) –0.5% (1.36) (1.84) (1.93) +0.5% 2.10 3.19 3.23 +1.00% 5.69 6.86 7.19 Unemployment rate (absolute change) –1.00% (7.40) (63.01) (27.83) –0.5% (3.78) (33.54) (15.67) +0.5% 4.15 36.97 16.99 +1.00% 8.50 75.93 33.74 Real GDP growth (relative change) -2.00% 3.72 16.14 9.10 -1.00% 1.86 9.84 5.09 +1.00% (1.46) (3.30) (2.36) +2.00% (2.97) (9.44) (5.93) House Price Index (relative change) –5.00% 8.04 144.34 51.46 –2.50% 3.45 65.80 23.28 +2.50% (2.79) (56.60) (19.09) +5.00% (5.16) (105.61) (35.29) Equity (S&P500, EuroStoxx, SMI) (relative change) –10.00% 3.94 9.66 6.78 –5.00% 1.91 4.29 3.34 +5.00% (8.30) (4.23) (7.27) +10.00% (10.14) (8.58) (10.22) Actual ECL allowances and provisions (as per Note 9) Pro forma ECL allowances and provisions, assuming application of 100% weighting Pro forma ECL allowances and provisions, assuming all positions being subject to lifetime ECL Scenarios Weighted average Baseline Severe downside Weighted average USD million, except where indicated ECL in % of baseline ECL in % of baseline ECL in % of baseline ECL in % of baseline Segmentation Private clients with mortgages (131) 244 (54) 100 (302) 562 (385) 717 Real estate financing (76) 138 (55) 100 (123) 224 (131) 237 Large corporate clients (206) 149 (138) 100 (298) 216 (307) 222 SME clients (74) 115 (64) 100 (93) 144 (129) 200 Other segments (152) 116 (131) 100 (183) 140 (385) 294 Total (639) 145 (442) 100 (999) 226 (1,336) 302

Fair value measurement (Tables)

Fair value measurement (Tables)	12 Months Ended
Fair value measurement (Tables)	Dec. 31, 2020
Fair ValueMeasurement [Line Items]
Disclosure Of Maximum Credit Risk Exposure Explanatory	Maximum exposure to credit risk 31.12.20 Maximum exposure to credit risk Collateral Credit enhancements Exposure to credit risk after collateral and credit enhancements USD billion Cash collateral received Collateral- ized by securities Secured by real estate Other collateral Netting Credit derivative contracts Guarantees Financial assets measured at fair value on the balance sheet Financial assets at fair value held for trading – debt instruments 1,2 24.6 24.6 Derivative financial instruments 3,4 159.6 6.0 138.4 15.2 Brokerage receivables 24.7 24.4 0.3 Financial assets at fair value not held for trading – debt instruments 5 58.2 13.2 45.0 Total financial assets measured at fair value 267.1 0.0 43.6 0.0 0.0 138.4 0.0 0.0 85.1 Guarantees 6 0.5 0.1 0.3 0.0 ##SL ##SL ##SL ##SL ##SL ##SL ##SL ##SL ##SL ##SL 31.12.19 Maximum exposure to credit risk Collateral Credit enhancements Exposure to credit risk after collateral and credit enhancements USD billion Cash collateral received Collateral- ized by securities Secured by real estate Other collateral Netting Credit derivative contracts Guarantees Financial assets measured at fair value on the balance sheet Financial assets at fair value held for trading – debt instruments 1,2 21.9 21.9 Derivative financial instruments 3,4 121.8 3.3 107.4 11.1 Brokerage receivables 18.0 17.8 0.2 Financial assets at fair value not held for trading – debt instruments 5 55.0 0.1 16.3 0.1 38.6 Total financial assets measured at fair value 216.7 0.1 37.4 0.0 0.1 107.4 0.0 0.0 71.7 Guarantees 6 1.0 0.3 0.7 1 These positions are generally managed under the market risk framework. For the purpose of this disclosure, collateral and credit enhancements were not considered. 2 Does not include investment fund units. 3 Includes USD 0 million (31 December 2019: USD 0 million) fair values of loan commitments and forward starting reverse repurchase agreements classified as derivatives. The full contractual committed amount of forward starting reverse repurchase agreements (generally highly collateralized) of USD 21.9 billion (31 December 2019: USD 20.3 billion) and derivative loan commitments (generally unsecured) of USD 9.4 billion (31 December 2019: USD 6.3 billion) is presented in Note 10 under notional amounts. 4 The amount shown in the “Netting” column represents the netting potential not recognized on the balance sheet. Refer to Note 22 for more information. 5 Financial assets at fair value not held for trading collateralized by securities consisted of structured loans and reverse repurchase and securities borrowing agreements. 6 The amount shown in the “Guarantees” column largely relates to sub-participations.
Level 3
Fair ValueMeasurement [Line Items]
Disclosure Of Fair Value Measurement Of Assets Explanatory	Determination of fair values from quoted market prices or valuation techniques 1 31.12.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial assets measured at fair value on a recurring basis Financial assets at fair value held for trading 107,507 15,553 2,337 125,397 113,634 12,068 1,812 127,514 of which: Equity instruments 90,307 1,101 171 91,579 96,161 400 226 96,787 Government bills / bonds 9,028 2,207 10 11,245 9,630 1,770 64 11,464 Investment fund units 7,374 1,794 23 9,192 7,088 1,729 50 8,867 Corporate and municipal bonds 789 8,356 817 9,961 755 6,617 542 7,914 Loans 0 1,860 1,134 2,995 0 1,180 791 1,971 Asset-backed securities 8 236 181 425 0 372 140 512 Derivative financial instruments 795 157,068 1,754 159,617 356 120,222 1,264 121,841 of which: Foreign exchange contracts 319 68,424 5 68,749 240 52,227 8 52,474 Interest rate contracts 0 50,353 537 50,890 6 42,288 263 42,558 Equity / index contracts 0 33,990 853 34,842 7 22,220 597 22,825 Credit derivative contracts 0 2,008 350 2,358 0 1,612 394 2,007 Commodity contracts 0 2,211 6 2,217 0 1,820 0 1,821 Brokerage receivables 0 24,659 0 24,659 0 18,007 0 18,007 Financial assets at fair value not held for trading 40,986 35,435 3,942 80,364 40,608 39,373 3,963 83,944 of which: Financial assets for unit-linked investment contracts 20,628 101 2 20,731 27,568 118 0 27,686 Corporate and municipal bonds 290 16,957 372 17,619 653 18,732 0 19,385 Government bills / bonds 19,704 3,593 0 23,297 12,089 3,700 0 15,790 Loans 0 7,699 862 8,561 0 10,206 1,231 11,438 Securities financing transactions 0 6,629 122 6,751 0 6,148 147 6,294 Auction rate securities 0 0 1,527 1,527 0 0 1,536 1,536 Investment fund units 278 447 105 831 194 448 98 740 Equity instruments 86 0 544 631 103 4 452 559 Other 0 10 408 418 0 16 499 515 Financial assets measured at fair value through other comprehensive income on a recurring basis Financial assets measured at fair value through other comprehensive income 1,144 7,114 0 8,258 1,906 4,439 0 6,345 of which: Asset-backed securities 0 6,624 0 6,624 0 3,955 0 3,955 Government bills / bonds 1,103 47 0 1,150 1,859 16 0 1,875 Corporate and municipal bonds 40 444 0 485 47 468 0 515 Non-financial assets measured at fair value on a recurring basis Precious metals and other physical commodities 6,264 0 0 6,264 4,597 0 0 4,597 Non-financial assets measured at fair value on a non-recurring basis Other non-financial assets 2 0 1 245 246 0 0 199 199 Total assets measured at fair value 156,696 239,831 8,278 404,805 161,101 194,110 7,237 362,448 Determination of fair values from quoted market prices or valuation techniques (continued) 1 31.12.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial liabilities measured at fair value on a recurring basis Financial liabilities at fair value held for trading 26,888 6,652 55 33,595 25,791 4,726 75 30,591 of which: Equity instruments 22,519 425 40 22,985 22,526 149 59 22,734 Corporate and municipal bonds 31 4,048 9 4,089 40 3,606 16 3,661 Government bills / bonds 3,642 1,036 0 4,678 2,820 646 0 3,466 Investment fund units 696 1,127 5 1,828 404 294 0 698 Derivative financial instruments 746 156,884 3,471 161,102 385 118,498 1,996 120,880 of which: Foreign exchange contracts 316 70,149 61 70,527 248 53,705 60 54,013 Interest rate contracts 0 43,389 527 43,916 7 36,434 130 36,571 Equity / index contracts 0 38,870 2,306 41,176 3 24,171 1,293 25,468 Credit derivative contracts 0 2,403 528 2,931 0 2,448 512 2,960 Commodity contracts 0 2,003 24 2,027 0 1,707 0 1,707 Financial liabilities designated at fair value on a recurring basis Brokerage payables designated at fair value 0 38,742 0 38,742 0 37,233 0 37,233 Debt issued designated at fair value 0 50,273 10,970 61,243 0 56,943 9,866 66,809 Other financial liabilities designated at fair value 0 29,671 716 30,387 0 35,119 822 35,940 of which: Financial liabilities related to unit-linked investment contracts 0 20,975 0 20,975 0 28,145 0 28,145 Securities financing transactions 0 7,317 0 7,317 0 5,742 0 5,742 Over-the-counter debt instruments 0 1,363 697 2,060 0 1,231 791 2,022 Total liabilities measured at fair value 27,635 282,222 15,212 325,069 26,176 252,518 12,759 291,452 1 Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented. 2 Other non-financial assets primarily consist of properties and other non-current assets held for sale, which are measured at the lower of their net carrying amount or fair value less costs to sell. Valuation techniques and inputs used in the fair value measurement of Level 3 assets and liabilities Fair value Significant unobservable input(s) 1 Range of inputs Assets Liabilities Valuation technique(s) 31.12.20 31.12.19 USD billion 31.12.20 31.12.19 31.12.20 31.12.19 low high weighted average 2 low high weighted average 2 unit 1 Financial assets and liabilities at fair value held for trading and Financial assets at fair value not held for trading Corporate and municipal bonds 1.2 0.5 0.0 0.0 Relative value to market comparable Bond price equivalent 1 143 100 0 143 101 points Discounted expected cash flows Discount margin 268 268 basis points Traded loans, loans measured at fair value, loan commitments and guarantees 2.4 2.4 0.0 0.0 Relative value to market comparable Loan price equivalent 0 101 99 0 101 99 points Discounted expected cash flows Credit spread 190 800 225 530 basis points Market comparable and securitization model Credit spread 40 1,858 333 45 1,412 244 basis points Auction rate securities 3 1.5 1.5 Relative value to market comparable Bond price equivalent 79 98 88 points Discounted expected cash flows Credit spread 100 188 140 basis points Investment fund units 4 0.1 0.1 0.0 0.0 Relative value to market comparable Net asset value Equity instruments 4 0.7 0.7 0.0 0.1 Relative value to market comparable Price Debt issued designated at fair value 5 11.0 9.9 Other financial liabilities designated at fair value 0.7 0.8 Discounted expected cash flows Funding spread 42 175 44 175 basis points Derivative financial instruments Interest rate contracts 0.5 0.3 0.5 0.1 Option model Volatility of interest rates 29 69 15 63 basis points Credit derivative contracts 0.3 0.4 0.5 0.5 Discounted expected cash flows Credit spreads 1 489 1 700 basis points Bond price equivalent 0 100 0 100 points Equity / index contracts 0.9 0.6 2.3 1.3 Option model Equity dividend yields 0 13 0 14 % Volatility of equity stocks, equity and other indices 4 100 4 105 % Equity-to-FX correlation (34) 65 (45) 71 % Equity-to-equity correlation (16) 100 (17) 98 % 1 The ranges of significant unobservable inputs are represented in points, percentages and basis points. Points are a percentage of par (e.g., 100 points would be 100% of par). 2 Weighted averages are provided for non-derivative financial instruments and were calculated by weighting inputs based on the fair values of the respective instruments. Weighted averages are not provided for inputs related to derivative contracts, as this would not be meaningful. 3 Bond price equivalent prior to the fourth quarter of 2020; discounted cash flow model thereafter. 4 The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments. 5 Debt issued designated at fair value is composed primarily of UBS structured notes, which include variable maturity notes with various equity and foreign exchange underlying risks, rates-linked and credit-linked notes, all of which have embedded derivative parameters that are considered to be unobservable. The equivalent derivative instrument parameters are presented in the respective derivative financial instruments lines in this table.
Disclosure Of Fair Value Measurement Of Liabilities Explanatory	Determination of fair values from quoted market prices or valuation techniques 1 31.12.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial assets measured at fair value on a recurring basis Financial assets at fair value held for trading 107,507 15,553 2,337 125,397 113,634 12,068 1,812 127,514 of which: Equity instruments 90,307 1,101 171 91,579 96,161 400 226 96,787 Government bills / bonds 9,028 2,207 10 11,245 9,630 1,770 64 11,464 Investment fund units 7,374 1,794 23 9,192 7,088 1,729 50 8,867 Corporate and municipal bonds 789 8,356 817 9,961 755 6,617 542 7,914 Loans 0 1,860 1,134 2,995 0 1,180 791 1,971 Asset-backed securities 8 236 181 425 0 372 140 512 Derivative financial instruments 795 157,068 1,754 159,617 356 120,222 1,264 121,841 of which: Foreign exchange contracts 319 68,424 5 68,749 240 52,227 8 52,474 Interest rate contracts 0 50,353 537 50,890 6 42,288 263 42,558 Equity / index contracts 0 33,990 853 34,842 7 22,220 597 22,825 Credit derivative contracts 0 2,008 350 2,358 0 1,612 394 2,007 Commodity contracts 0 2,211 6 2,217 0 1,820 0 1,821 Brokerage receivables 0 24,659 0 24,659 0 18,007 0 18,007 Financial assets at fair value not held for trading 40,986 35,435 3,942 80,364 40,608 39,373 3,963 83,944 of which: Financial assets for unit-linked investment contracts 20,628 101 2 20,731 27,568 118 0 27,686 Corporate and municipal bonds 290 16,957 372 17,619 653 18,732 0 19,385 Government bills / bonds 19,704 3,593 0 23,297 12,089 3,700 0 15,790 Loans 0 7,699 862 8,561 0 10,206 1,231 11,438 Securities financing transactions 0 6,629 122 6,751 0 6,148 147 6,294 Auction rate securities 0 0 1,527 1,527 0 0 1,536 1,536 Investment fund units 278 447 105 831 194 448 98 740 Equity instruments 86 0 544 631 103 4 452 559 Other 0 10 408 418 0 16 499 515 Financial assets measured at fair value through other comprehensive income on a recurring basis Financial assets measured at fair value through other comprehensive income 1,144 7,114 0 8,258 1,906 4,439 0 6,345 of which: Asset-backed securities 0 6,624 0 6,624 0 3,955 0 3,955 Government bills / bonds 1,103 47 0 1,150 1,859 16 0 1,875 Corporate and municipal bonds 40 444 0 485 47 468 0 515 Non-financial assets measured at fair value on a recurring basis Precious metals and other physical commodities 6,264 0 0 6,264 4,597 0 0 4,597 Non-financial assets measured at fair value on a non-recurring basis Other non-financial assets 2 0 1 245 246 0 0 199 199 Total assets measured at fair value 156,696 239,831 8,278 404,805 161,101 194,110 7,237 362,448 Determination of fair values from quoted market prices or valuation techniques (continued) 1 31.12.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial liabilities measured at fair value on a recurring basis Financial liabilities at fair value held for trading 26,888 6,652 55 33,595 25,791 4,726 75 30,591 of which: Equity instruments 22,519 425 40 22,985 22,526 149 59 22,734 Corporate and municipal bonds 31 4,048 9 4,089 40 3,606 16 3,661 Government bills / bonds 3,642 1,036 0 4,678 2,820 646 0 3,466 Investment fund units 696 1,127 5 1,828 404 294 0 698 Derivative financial instruments 746 156,884 3,471 161,102 385 118,498 1,996 120,880 of which: Foreign exchange contracts 316 70,149 61 70,527 248 53,705 60 54,013 Interest rate contracts 0 43,389 527 43,916 7 36,434 130 36,571 Equity / index contracts 0 38,870 2,306 41,176 3 24,171 1,293 25,468 Credit derivative contracts 0 2,403 528 2,931 0 2,448 512 2,960 Commodity contracts 0 2,003 24 2,027 0 1,707 0 1,707 Financial liabilities designated at fair value on a recurring basis Brokerage payables designated at fair value 0 38,742 0 38,742 0 37,233 0 37,233 Debt issued designated at fair value 0 50,273 10,970 61,243 0 56,943 9,866 66,809 Other financial liabilities designated at fair value 0 29,671 716 30,387 0 35,119 822 35,940 of which: Financial liabilities related to unit-linked investment contracts 0 20,975 0 20,975 0 28,145 0 28,145 Securities financing transactions 0 7,317 0 7,317 0 5,742 0 5,742 Over-the-counter debt instruments 0 1,363 697 2,060 0 1,231 791 2,022 Total liabilities measured at fair value 27,635 282,222 15,212 325,069 26,176 252,518 12,759 291,452 1 Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented. 2 Other non-financial assets primarily consist of properties and other non-current assets held for sale, which are measured at the lower of their net carrying amount or fair value less costs to sell. Valuation techniques and inputs used in the fair value measurement of Level 3 assets and liabilities Fair value Significant unobservable input(s) 1 Range of inputs Assets Liabilities Valuation technique(s) 31.12.20 31.12.19 USD billion 31.12.20 31.12.19 31.12.20 31.12.19 low high weighted average 2 low high weighted average 2 unit 1 Financial assets and liabilities at fair value held for trading and Financial assets at fair value not held for trading Corporate and municipal bonds 1.2 0.5 0.0 0.0 Relative value to market comparable Bond price equivalent 1 143 100 0 143 101 points Discounted expected cash flows Discount margin 268 268 basis points Traded loans, loans measured at fair value, loan commitments and guarantees 2.4 2.4 0.0 0.0 Relative value to market comparable Loan price equivalent 0 101 99 0 101 99 points Discounted expected cash flows Credit spread 190 800 225 530 basis points Market comparable and securitization model Credit spread 40 1,858 333 45 1,412 244 basis points Auction rate securities 3 1.5 1.5 Relative value to market comparable Bond price equivalent 79 98 88 points Discounted expected cash flows Credit spread 100 188 140 basis points Investment fund units 4 0.1 0.1 0.0 0.0 Relative value to market comparable Net asset value Equity instruments 4 0.7 0.7 0.0 0.1 Relative value to market comparable Price Debt issued designated at fair value 5 11.0 9.9 Other financial liabilities designated at fair value 0.7 0.8 Discounted expected cash flows Funding spread 42 175 44 175 basis points Derivative financial instruments Interest rate contracts 0.5 0.3 0.5 0.1 Option model Volatility of interest rates 29 69 15 63 basis points Credit derivative contracts 0.3 0.4 0.5 0.5 Discounted expected cash flows Credit spreads 1 489 1 700 basis points Bond price equivalent 0 100 0 100 points Equity / index contracts 0.9 0.6 2.3 1.3 Option model Equity dividend yields 0 13 0 14 % Volatility of equity stocks, equity and other indices 4 100 4 105 % Equity-to-FX correlation (34) 65 (45) 71 % Equity-to-equity correlation (16) 100 (17) 98 % 1 The ranges of significant unobservable inputs are represented in points, percentages and basis points. Points are a percentage of par (e.g., 100 points would be 100% of par). 2 Weighted averages are provided for non-derivative financial instruments and were calculated by weighting inputs based on the fair values of the respective instruments. Weighted averages are not provided for inputs related to derivative contracts, as this would not be meaningful. 3 Bond price equivalent prior to the fourth quarter of 2020; discounted cash flow model thereafter. 4 The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments. 5 Debt issued designated at fair value is composed primarily of UBS structured notes, which include variable maturity notes with various equity and foreign exchange underlying risks, rates-linked and credit-linked notes, all of which have embedded derivative parameters that are considered to be unobservable. The equivalent derivative instrument parameters are presented in the respective derivative financial instruments lines in this table.
Disclosure Of Deferred Day-One Profit Or Loss Explanatory	Deferred day-1 profit or loss reserves USD million 2020 2019 2018 Reserve balance at the beginning of the year 146 255 338 Profit / (loss) deferred on new transactions 362 171 341 (Profit) / loss recognized in the income statement (238) (278) (417) Foreign currency translation 0 (2) (6) Reserve balance at the end of the year 269 146 255
Disclosure of significant unobservable inputs used in fair value measurement of assets [text block]	Valuation techniques and inputs used in the fair value measurement of Level 3 assets and liabilities Fair value Significant unobservable input(s) 1 Range of inputs Assets Liabilities Valuation technique(s) 31.12.20 31.12.19 USD billion 31.12.20 31.12.19 31.12.20 31.12.19 low high weighted average 2 low high weighted average 2 unit 1 Financial assets and liabilities at fair value held for trading and Financial assets at fair value not held for trading Corporate and municipal bonds 1.2 0.5 0.0 0.0 Relative value to market comparable Bond price equivalent 1 143 100 0 143 101 points Discounted expected cash flows Discount margin 268 268 basis points Traded loans, loans measured at fair value, loan commitments and guarantees 2.4 2.4 0.0 0.0 Relative value to market comparable Loan price equivalent 0 101 99 0 101 99 points Discounted expected cash flows Credit spread 190 800 225 530 basis points Market comparable and securitization model Credit spread 40 1,858 333 45 1,412 244 basis points Auction rate securities 3 1.5 1.5 Relative value to market comparable Bond price equivalent 79 98 88 points Discounted expected cash flows Credit spread 100 188 140 basis points Investment fund units 4 0.1 0.1 0.0 0.0 Relative value to market comparable Net asset value Equity instruments 4 0.7 0.7 0.0 0.1 Relative value to market comparable Price Debt issued designated at fair value 5 11.0 9.9 Other financial liabilities designated at fair value 0.7 0.8 Discounted expected cash flows Funding spread 42 175 44 175 basis points Derivative financial instruments Interest rate contracts 0.5 0.3 0.5 0.1 Option model Volatility of interest rates 29 69 15 63 basis points Credit derivative contracts 0.3 0.4 0.5 0.5 Discounted expected cash flows Credit spreads 1 489 1 700 basis points Bond price equivalent 0 100 0 100 points Equity / index contracts 0.9 0.6 2.3 1.3 Option model Equity dividend yields 0 13 0 14 % Volatility of equity stocks, equity and other indices 4 100 4 105 % Equity-to-FX correlation (34) 65 (45) 71 % Equity-to-equity correlation (16) 100 (17) 98 % 1 The ranges of significant unobservable inputs are represented in points, percentages and basis points. Points are a percentage of par (e.g., 100 points would be 100% of par). 2 Weighted averages are provided for non-derivative financial instruments and were calculated by weighting inputs based on the fair values of the respective instruments. Weighted averages are not provided for inputs related to derivative contracts, as this would not be meaningful. 3 Bond price equivalent prior to the fourth quarter of 2020; discounted cash flow model thereafter. 4 The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments. 5 Debt issued designated at fair value is composed primarily of UBS structured notes, which include variable maturity notes with various equity and foreign exchange underlying risks, rates-linked and credit-linked notes, all of which have embedded derivative parameters that are considered to be unobservable. The equivalent derivative instrument parameters are presented in the respective derivative financial instruments lines in this table.
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [text block]	Valuation techniques and inputs used in the fair value measurement of Level 3 assets and liabilities Fair value Significant unobservable input(s) 1 Range of inputs Assets Liabilities Valuation technique(s) 31.12.20 31.12.19 USD billion 31.12.20 31.12.19 31.12.20 31.12.19 low high weighted average 2 low high weighted average 2 unit 1 Financial assets and liabilities at fair value held for trading and Financial assets at fair value not held for trading Corporate and municipal bonds 1.2 0.5 0.0 0.0 Relative value to market comparable Bond price equivalent 1 143 100 0 143 101 points Discounted expected cash flows Discount margin 268 268 basis points Traded loans, loans measured at fair value, loan commitments and guarantees 2.4 2.4 0.0 0.0 Relative value to market comparable Loan price equivalent 0 101 99 0 101 99 points Discounted expected cash flows Credit spread 190 800 225 530 basis points Market comparable and securitization model Credit spread 40 1,858 333 45 1,412 244 basis points Auction rate securities 3 1.5 1.5 Relative value to market comparable Bond price equivalent 79 98 88 points Discounted expected cash flows Credit spread 100 188 140 basis points Investment fund units 4 0.1 0.1 0.0 0.0 Relative value to market comparable Net asset value Equity instruments 4 0.7 0.7 0.0 0.1 Relative value to market comparable Price Debt issued designated at fair value 5 11.0 9.9 Other financial liabilities designated at fair value 0.7 0.8 Discounted expected cash flows Funding spread 42 175 44 175 basis points Derivative financial instruments Interest rate contracts 0.5 0.3 0.5 0.1 Option model Volatility of interest rates 29 69 15 63 basis points Credit derivative contracts 0.3 0.4 0.5 0.5 Discounted expected cash flows Credit spreads 1 489 1 700 basis points Bond price equivalent 0 100 0 100 points Equity / index contracts 0.9 0.6 2.3 1.3 Option model Equity dividend yields 0 13 0 14 % Volatility of equity stocks, equity and other indices 4 100 4 105 % Equity-to-FX correlation (34) 65 (45) 71 % Equity-to-equity correlation (16) 100 (17) 98 % 1 The ranges of significant unobservable inputs are represented in points, percentages and basis points. Points are a percentage of par (e.g., 100 points would be 100% of par). 2 Weighted averages are provided for non-derivative financial instruments and were calculated by weighting inputs based on the fair values of the respective instruments. Weighted averages are not provided for inputs related to derivative contracts, as this would not be meaningful. 3 Bond price equivalent prior to the fourth quarter of 2020; discounted cash flow model thereafter. 4 The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments. 5 Debt issued designated at fair value is composed primarily of UBS structured notes, which include variable maturity notes with various equity and foreign exchange underlying risks, rates-linked and credit-linked notes, all of which have embedded derivative parameters that are considered to be unobservable. The equivalent derivative instrument parameters are presented in the respective derivative financial instruments lines in this table.
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [text block]	Sensitivity of fair value measurements to changes in unobservable input assumptions 1 31.12.20 31.12.19 USD million Favorable changes Unfavorable changes Favorable changes Unfavorable changes Traded loans, loans designated at fair value, loan commitments and guarantees 29 (28) 46 (21) Securities financing transactions 40 (52) 11 (11) Auction rate securities 105 (105) 87 (87) Asset-backed securities 41 (41) 35 (40) Equity instruments 129 (96) 140 (80) Interest rate derivative contracts, net 11 (16) 8 (17) Credit derivative contracts, net 2 10 (14) 31 (35) Foreign exchange derivative contracts, net 20 (15) 12 (8) Equity / index derivative contracts, net 318 (294) 183 (197) Other 91 (107) 47 (51) Total 794 (768) 600 (547) 1 Sensitivity of issued and over-the-counter debt instruments is reported with the equivalent derivative or securities financing instrument. 2 Includes refinements applied in estimating valuation uncertainty, resulting from a move to use issuer-specific proxy credit default swap curves rather than generic curves.
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, liabilities [text block]	Sensitivity of fair value measurements to changes in unobservable input assumptions 1 31.12.20 31.12.19 USD million Favorable changes Unfavorable changes Favorable changes Unfavorable changes Traded loans, loans designated at fair value, loan commitments and guarantees 29 (28) 46 (21) Securities financing transactions 40 (52) 11 (11) Auction rate securities 105 (105) 87 (87) Asset-backed securities 41 (41) 35 (40) Equity instruments 129 (96) 140 (80) Interest rate derivative contracts, net 11 (16) 8 (17) Credit derivative contracts, net 2 10 (14) 31 (35) Foreign exchange derivative contracts, net 20 (15) 12 (8) Equity / index derivative contracts, net 318 (294) 183 (197) Other 91 (107) 47 (51) Total 794 (768) 600 (547) 1 Sensitivity of issued and over-the-counter debt instruments is reported with the equivalent derivative or securities financing instrument. 2 Includes refinements applied in estimating valuation uncertainty, resulting from a move to use issuer-specific proxy credit default swap curves rather than generic curves.
Disclosure Of Fair Value Of Financial Instruments Explanatory	Movements of Level 3 instruments 1 Total gains / losses included in comprehensive income Total gains / losses included in comprehensive income USD billion Balance as of 31 December 2018 Net gains / losses included in income 2 of which: related to Level 3 instruments held at the end of the reporting period Purchases Sales Issuances Settlements Transfers into Level 3 Transfers out of Level 3 Foreign currency translation Balance as of 31 December 2019 Balance as of 31 December 2019 3 Net gains / losses included in income 2 of which: related to Level 3 instruments held at the end of the reporting period Purchases Sales Issuances Settlements Transfers into Level 3 Transfers out of Level 3 Foreign currency translation Balance as of 31 December 2020 3 Financial assets at fair value held for trading 2.0 (0.1) 0.0 0.5 (1.3) 1.0 0.0 0.2 (0.4) 0.0 1.8 1.8 (0.1) (0.1) 0.8 (1.4) 1.0 0.0 0.3 0.0 0.0 2.3 of which: Investment fund units 0.4 0.0 0.0 0.0 (0.2) 0.0 0.0 0.0 (0.2) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Corporate and municipal bonds 0.7 0.0 0.0 0.3 (0.2) 0.0 0.0 0.0 (0.2) 0.0 0.5 0.5 0.0 0.0 0.7 (0.5) 0.0 0.0 0.1 0.0 0.0 0.8 Loans 0.7 (0.1) 0.0 0.0 (0.8) 1.0 0.0 0.0 0.0 0.0 0.8 0.8 0.0 (0.1) 0.0 (0.7) 1.0 0.0 0.1 0.0 0.0 1.1 Other 0.2 0.0 (0.1) 0.1 0.0 0.0 0.0 0.2 0.0 0.0 0.4 0.4 0.0 0.0 0.1 (0.3) 0.0 0.0 0.2 0.0 0.0 0.4 Derivative financial instruments – assets 1.4 (0.1) 0.0 0.0 0.0 0.4 (0.2) 0.1 (0.3) 0.0 1.3 1.3 0.3 0.4 0.0 0.0 0.7 (0.5) 0.1 (0.2) 0.1 1.8 of which: Interest rate contracts 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 (0.2) 0.0 0.3 0.3 0.2 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 Equity / index contracts 0.5 0.0 0.1 0.0 0.0 0.1 0.0 0.1 (0.1) 0.0 0.6 0.6 0.1 0.1 0.0 0.0 0.6 (0.3) 0.0 (0.1) 0.0 0.9 Credit derivative contracts 0.5 (0.1) (0.1) 0.0 0.0 0.2 (0.1) 0.0 (0.1) 0.0 0.4 0.4 0.0 0.0 0.0 0.0 0.1 (0.2) 0.1 0.0 0.0 0.3 Other 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Financial assets at fair value not held for trading 4.4 0.0 0.0 1.2 (0.6) 0.0 0.0 0.1 (1.2) 0.0 4.0 4.0 0.0 0.1 0.8 (0.9) 0.0 0.0 0.1 0.0 0.0 3.9 of which: Loans 1.8 0.0 0.0 0.7 (0.1) 0.0 0.0 0.1 (1.2) 0.0 1.2 1.2 0.0 0.0 0.3 (0.7) 0.0 0.0 0.0 0.0 0.0 0.9 Auction rate securities 1.7 0.0 0.0 0.0 (0.1) 0.0 0.0 0.0 0.0 0.0 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.5 Equity instruments 0.5 0.0 0.0 0.1 (0.2) 0.0 0.0 0.0 0.0 0.0 0.5 0.5 0.0 0.0 0.1 (0.1) 0.0 0.0 0.0 0.0 0.0 0.5 Other 0.5 0.0 0.0 0.5 (0.2) 0.0 0.0 0.0 0.0 0.0 0.7 0.7 0.0 0.0 0.4 (0.2) 0.0 0.0 0.0 0.0 0.0 1.0 Derivative financial instruments – liabilities 2.2 0.1 0.1 0.0 0.0 0.2 (0.4) 0.2 (0.3) 0.0 2.0 2.0 1.3 1.2 0.0 0.0 1.2 (0.9) 0.4 (0.6) 0.1 3.5 of which: Interest rate contracts 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 (0.1) 0.0 0.1 0.1 0.3 0.3 0.0 0.0 0.3 (0.2) 0.2 (0.2) 0.0 0.5 Equity / index contracts 1.4 0.3 0.2 0.0 0.0 0.0 (0.3) 0.1 (0.2) 0.0 1.3 1.3 1.0 0.8 0.0 0.0 0.8 (0.6) 0.1 (0.2) 0.0 2.3 Credit derivative contracts 0.5 (0.1) (0.1) 0.0 0.0 0.2 0.0 0.0 (0.1) 0.0 0.5 0.5 0.0 0.0 0.0 0.0 0.1 (0.1) 0.1 (0.2) 0.0 0.5 Other 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 Debt issued designated at fair value 11.0 0.8 0.7 0.0 0.0 5.8 (5.4) 0.7 (3.1) 0.0 9.9 9.9 0.2 0.0 0.0 0.0 7.6 (5.7) 0.5 (1.7) 0.2 11.0 Other financial liabilities designated at fair value 1.0 0.2 0.1 0.0 0.0 0.3 (0.7) 0.0 0.0 0.0 0.8 0.8 0.1 0.1 0.0 0.0 0.3 (0.5) 0.0 0.0 0.0 0.7 1 Effective 1 January 2020, UBS has enhanced its disclosure of Level 3 movements by excluding from the table the impacts of instruments purchased during the period and sold prior to the end of the period. Prior-period comparatives have been restated accordingly. 2 Net gains / losses included in comprehensive income are composed of Net interest income, Other net income from financial instruments measured at fair value through profit or loss and Other income. 3 Total Level 3 assets as of 31 December 2020 were USD 8.3 billion (31 December 2019: USD 7.2 billion). Total Level 3 liabilities as of 31 December 2020 were USD 15.2 billion (31 December 2019: USD 12.8 billion).
Own credit adjustments on financial liabilities designated at fair value	Own credit adjustments on financial liabilities designated at fair value Included in Other comprehensive income For the year ended USD million 31.12.20 31.12.19 31.12.18 Recognized during the period: Realized gain / (loss) 2 8 (3) Unrealized gain / (loss) (295) (408) 519 Total gain / (loss), before tax (293) (400) 517 As of USD million 31.12.20 31.12.19 31.12.18 Recognized on the balance sheet as of the end of the period: Unrealized life-to-date gain / (loss) (381) (88) 320
Valuation adjustments on financial instruments	Valuation adjustments on financial instruments As of Life-to-date gain / (loss), USD million 31.12.20 31.12.19 Credit valuation adjustments 1 (66) (48) Funding valuation adjustments 2 (73) (93) Debit valuation adjustments 0 1 Other valuation adjustments (820) (566) of which: liquidity (340) (300) of which: model uncertainty (479) (266) 1 Amounts do not include reserves against defaulted counterparties. 2 Includes FVAs on structured financing transactions of USD 6 million as of 31 December 2020 and USD 43 million as of 31 December 2019.
Disclosure Of Maximum Credit Risk Exposure Explanatory	Maximum exposure to credit risk 31.12.20 Maximum exposure to credit risk Collateral Credit enhancements Exposure to credit risk after collateral and credit enhancements USD billion Cash collateral received Collateral- ized by securities Secured by real estate Other collateral Netting Credit derivative contracts Guarantees Financial assets measured at fair value on the balance sheet Financial assets at fair value held for trading – debt instruments 1,2 24.6 24.6 Derivative financial instruments 3,4 159.6 6.0 138.4 15.2 Brokerage receivables 24.7 24.4 0.3 Financial assets at fair value not held for trading – debt instruments 5 58.2 13.2 45.0 Total financial assets measured at fair value 267.1 0.0 43.6 0.0 0.0 138.4 0.0 0.0 85.1 Guarantees 6 0.5 0.1 0.3 0.0 ##SL ##SL ##SL ##SL ##SL ##SL ##SL ##SL ##SL ##SL 31.12.19 Maximum exposure to credit risk Collateral Credit enhancements Exposure to credit risk after collateral and credit enhancements USD billion Cash collateral received Collateral- ized by securities Secured by real estate Other collateral Netting Credit derivative contracts Guarantees Financial assets measured at fair value on the balance sheet Financial assets at fair value held for trading – debt instruments 1,2 21.9 21.9 Derivative financial instruments 3,4 121.8 3.3 107.4 11.1 Brokerage receivables 18.0 17.8 0.2 Financial assets at fair value not held for trading – debt instruments 5 55.0 0.1 16.3 0.1 38.6 Total financial assets measured at fair value 216.7 0.1 37.4 0.0 0.1 107.4 0.0 0.0 71.7 Guarantees 6 1.0 0.3 0.7 1 These positions are generally managed under the market risk framework. For the purpose of this disclosure, collateral and credit enhancements were not considered. 2 Does not include investment fund units. 3 Includes USD 0 million (31 December 2019: USD 0 million) fair values of loan commitments and forward starting reverse repurchase agreements classified as derivatives. The full contractual committed amount of forward starting reverse repurchase agreements (generally highly collateralized) of USD 21.9 billion (31 December 2019: USD 20.3 billion) and derivative loan commitments (generally unsecured) of USD 9.4 billion (31 December 2019: USD 6.3 billion) is presented in Note 10 under notional amounts. 4 The amount shown in the “Netting” column represents the netting potential not recognized on the balance sheet. Refer to Note 22 for more information. 5 Financial assets at fair value not held for trading collateralized by securities consisted of structured loans and reverse repurchase and securities borrowing agreements. 6 The amount shown in the “Guarantees” column largely relates to sub-participations.
Level 3 \| Not measured at fair value
Fair ValueMeasurement [Line Items]
Disclosure Of Fair Value Measurement Of Assets Explanatory	Financial instruments not measured at fair value 31.12.20 31.12.19 Carrying amount Fair value Carrying amount Fair value USD billion Total Carrying amount approximates fair value 1 Level 1 Level 2 Level 3 Total Total Carrying amount approximates fair value 1 Level 1 Level 2 Level 3 Total Assets 2 Cash and balances at central banks 158.2 158.1 0.1 0.0 0.0 158.2 107.1 107.0 0.1 0.0 0.0 107.1 Loans and advances to banks 15.4 14.7 0.0 0.6 0.1 15.4 12.4 11.8 0.0 0.5 0.2 12.4 Receivables from securities financing transactions 74.2 64.9 0.0 7.6 1.7 74.2 84.2 74.0 0.0 8.6 1.6 84.2 Cash collateral receivables on derivative instruments 32.7 32.7 0.0 0.0 0.0 32.7 23.3 23.3 0.0 0.0 0.0 23.3 Loans and advances to customers 379.5 172.0 0.0 34.2 174.6 380.8 326.8 151.6 0.0 25.4 152.2 329.1 Other financial assets measured at amortized cost 27.2 5.3 9.4 10.9 2.3 28.0 23.0 5.7 8.4 6.4 2.8 23.2 Liabilities Amounts due to banks 11.0 8.5 0.0 2.6 0.0 11.0 6.6 5.6 0.0 0.9 0.0 6.6 Payables from securities financing transactions 6.3 6.0 0.0 0.3 0.0 6.3 7.8 7.5 0.0 0.3 0.0 7.8 Cash collateral payables on derivative instruments 37.3 37.3 0.0 0.0 0.0 37.3 31.4 31.4 0.0 0.0 0.0 31.4 Customer deposits 524.6 519.4 0.0 5.3 0.0 524.7 448.3 439.1 0.0 9.3 0.0 448.4 Debt issued measured at amortized cost 139.2 16.4 0.0 125.5 0.0 141.9 110.5 8.7 0.0 104.9 0.0 113.6 Other financial liabilities measured at amortized cost 3 5.8 5.7 0.0 0.0 0.1 5.8 5.8 5.7 0.0 0.0 0.0 5.7 1 Includes certain financial instruments where the carrying amount is a reasonable approximation of the fair value due to the instruments’ short-term nature (instruments that are receivable or payable on demand, or with a remaining maturity (excluding the effects of callable features) of three months or less). 2 As of 31 December 2020, USD 0 billion of Loans and advances to banks, USD 1 billion of Receivables from securities financing transactions, USD 163 billion of Loans and advances to customers and USD 20 billion of Other financial assets measured at amortized cost were expected to be recovered or settled after 12 months. As of 31 December 2019, USD 0 billion of Loans and advances to banks, USD 1 billion of Receivables from securities financing transactions, USD 140 billion of Loans and advances to customers and USD 16 billion of Other financial assets measured at amortized cost were expected to be recovered or settled after 12 months. 3 Excludes lease liabilities.
Disclosure Of Fair Value Measurement Of Liabilities Explanatory	Financial instruments not measured at fair value 31.12.20 31.12.19 Carrying amount Fair value Carrying amount Fair value USD billion Total Carrying amount approximates fair value 1 Level 1 Level 2 Level 3 Total Total Carrying amount approximates fair value 1 Level 1 Level 2 Level 3 Total Assets 2 Cash and balances at central banks 158.2 158.1 0.1 0.0 0.0 158.2 107.1 107.0 0.1 0.0 0.0 107.1 Loans and advances to banks 15.4 14.7 0.0 0.6 0.1 15.4 12.4 11.8 0.0 0.5 0.2 12.4 Receivables from securities financing transactions 74.2 64.9 0.0 7.6 1.7 74.2 84.2 74.0 0.0 8.6 1.6 84.2 Cash collateral receivables on derivative instruments 32.7 32.7 0.0 0.0 0.0 32.7 23.3 23.3 0.0 0.0 0.0 23.3 Loans and advances to customers 379.5 172.0 0.0 34.2 174.6 380.8 326.8 151.6 0.0 25.4 152.2 329.1 Other financial assets measured at amortized cost 27.2 5.3 9.4 10.9 2.3 28.0 23.0 5.7 8.4 6.4 2.8 23.2 Liabilities Amounts due to banks 11.0 8.5 0.0 2.6 0.0 11.0 6.6 5.6 0.0 0.9 0.0 6.6 Payables from securities financing transactions 6.3 6.0 0.0 0.3 0.0 6.3 7.8 7.5 0.0 0.3 0.0 7.8 Cash collateral payables on derivative instruments 37.3 37.3 0.0 0.0 0.0 37.3 31.4 31.4 0.0 0.0 0.0 31.4 Customer deposits 524.6 519.4 0.0 5.3 0.0 524.7 448.3 439.1 0.0 9.3 0.0 448.4 Debt issued measured at amortized cost 139.2 16.4 0.0 125.5 0.0 141.9 110.5 8.7 0.0 104.9 0.0 113.6 Other financial liabilities measured at amortized cost 3 5.8 5.7 0.0 0.0 0.1 5.8 5.8 5.7 0.0 0.0 0.0 5.7 1 Includes certain financial instruments where the carrying amount is a reasonable approximation of the fair value due to the instruments’ short-term nature (instruments that are receivable or payable on demand, or with a remaining maturity (excluding the effects of callable features) of three months or less). 2 As of 31 December 2020, USD 0 billion of Loans and advances to banks, USD 1 billion of Receivables from securities financing transactions, USD 163 billion of Loans and advances to customers and USD 20 billion of Other financial assets measured at amortized cost were expected to be recovered or settled after 12 months. As of 31 December 2019, USD 0 billion of Loans and advances to banks, USD 1 billion of Receivables from securities financing transactions, USD 140 billion of Loans and advances to customers and USD 16 billion of Other financial assets measured at amortized cost were expected to be recovered or settled after 12 months. 3 Excludes lease liabilities.
UBS AG
Fair ValueMeasurement [Line Items]
Disclosure Of Maximum Credit Risk Exposure Explanatory	Maximum exposure to credit risk 31.12.20 Maximum exposure to credit risk Collateral Credit enhancements Exposure to credit risk after collateral and credit enhancements USD billion Cash collateral received Collateral- ized by securities Secured by real estate Other collateral Netting Credit derivative contracts Guarantees Financial assets measured at fair value on the balance sheet Financial assets at fair value held for trading – debt instruments 1,2 24.7 24.7 Derivative financial instruments 3,4 159.6 6.0 138.4 15.2 Brokerage receivables 24.7 24.4 0.3 Financial assets at fair value not held for trading – debt instruments 5 58.2 13.2 45.0 Total financial assets measured at fair value 267.2 0.0 43.6 0.0 0.0 138.4 0.0 0.0 85.2 Guarantees 6 0.5 0.1 0.3 0.0 ##SL ##SL ##SL ##SL ##SL ##SL ##SL ##SL ##SL ##SL 31.12.19 Maximum exposure to credit risk Collateral Credit enhancements Exposure to credit risk after collateral and credit enhancements USD billion Cash collateral received Collateral- ized by securities Secured by real estate Other collateral Netting Credit derivative contracts Guarantees Financial assets measured at fair value on the balance sheet Financial assets at fair value held for trading – debt instruments 1,2 22.0 22.0 Derivative financial instruments 3,4 121.8 3.3 107.4 11.1 Brokerage receivables 18.0 0.0 17.8 0.2 Financial assets at fair value not held for trading – debt instruments 5 55.0 0.1 16.3 0.1 38.6 Total financial assets measured at fair value 216.8 0.1 37.4 0.0 0.1 107.4 0.0 0.0 71.9 Guarantees 6 1.0 0.3 0.7 1 These positions are generally managed under the market risk framework. For the purpose of this disclosure, collateral and credit enhancements were not considered. 2 Does not include investment fund units. 3 Includes USD 0 million (31 December 2019: USD 0 million) fair values of loan commitments and forward starting reverse repurchase agreements classified as derivatives. The full contractual committed amount of forward starting reverse repurchase agreements (generally highly collateralized) of USD 21.9 billion (31 December 2019: USD 20.3 billion) and derivative loan commitments (generally unsecured) of USD 9.4 billion (31 December 2019: USD 6.3 billion) is presented in Note 10 under notional amounts. 4 The amount shown in the “Netting” column represents the netting potential not recognized on the balance sheet. Refer to Note 22 for more information. 5 Financial assets at fair value not held for trading collateralized by securities consisted of structured loans and reverse repurchase and securities borrowing agreements. 6 The amount shown in the “Guarantees” column largely relates to sub-participations.
UBS AG \| Level 3
Fair ValueMeasurement [Line Items]
Disclosure Of Fair Value Measurement Of Assets Explanatory	Determination of fair values from quoted market prices or valuation techniques 1 31.12.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial assets measured at fair value on a recurring basis Financial assets at fair value held for trading 107,526 15,630 2,337 125,492 113,635 12,248 1,812 127,695 of which: Equity instruments 90,327 1,101 171 91,599 96,162 400 226 96,788 Government bills / bonds 9,028 2,207 10 11,245 9,630 1,770 64 11,464 Investment fund units 7,374 1,794 23 9,192 7,088 1,729 50 8,867 Corporate and municipal bonds 789 8,432 817 10,038 755 6,796 542 8,093 Loans 0 1,860 1,134 2,995 0 1,180 791 1,971 Asset-backed securities 8 236 181 425 0 372 140 512 Derivative financial instruments 795 157,069 1,754 159,618 356 120,224 1,264 121,843 of which: Foreign exchange contracts 319 68,425 5 68,750 240 52,228 8 52,476 Interest rate contracts 0 50,353 537 50,890 6 42,288 263 42,558 Equity / index contracts 0 33,990 853 34,842 7 22,220 597 22,825 Credit derivative contracts 0 2,008 350 2,358 0 1,612 394 2,007 Commodity contracts 0 2,211 6 2,217 0 1,820 0 1,821 Brokerage receivables 0 24,659 0 24,659 0 18,007 0 18,007 Financial assets at fair value not held for trading 40,986 35,110 3,942 80,038 40,608 39,065 3,962 83,636 of which: Financial assets for unit-linked investment contracts 20,628 101 2 20,731 27,568 118 0 27,686 Corporate and municipal bonds 290 16,957 372 17,619 653 18,732 0 19,385 Government bills / bonds 19,704 3,593 0 23,297 12,089 3,700 0 15,790 Loans 0 7,699 862 8,561 0 10,206 1,231 11,438 Securities financing transactions 0 6,629 122 6,751 0 6,148 147 6,294 Auction rate securities 0 0 1,527 1,527 0 0 1,536 1,536 Investment fund units 278 121 105 505 194 140 98 432 Equity instruments 86 0 544 631 103 4 451 559 Other 0 10 408 418 0 16 499 515 Financial assets measured at fair value through other comprehensive income on a recurring basis Financial assets measured at fair value through other comprehensive income 1,144 7,114 0 8,258 1,906 4,439 0 6,345 of which: Asset-backed securities 0 6,624 0 6,624 0 3,955 0 3,955 Government bills / bonds 1,103 47 0 1,150 1,859 16 0 1,875 Corporate and municipal bonds 40 444 0 485 47 468 0 515 Non-financial assets measured at fair value on a recurring basis Precious metals and other physical commodities 6,264 0 0 6,264 4,597 0 0 4,597 Non-financial assets measured at fair value on a non-recurring basis Other non-financial assets 2 0 1 245 246 0 0 199 199 Total assets measured at fair value 156,716 239,583 8,278 404,576 161,102 193,983 7,237 362,322 Determination of fair values from quoted market prices or valuation techniques (continued) 1 31.12.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial liabilities measured at fair value on a recurring basis Financial liabilities at fair value held for trading 26,889 6,652 55 33,595 25,791 4,726 75 30,591 of which: Equity instruments 22,519 425 40 22,985 22,526 149 59 22,734 Corporate and municipal bonds 31 4,048 9 4,089 40 3,606 16 3,661 Government bills / bonds 3,642 1,036 0 4,678 2,820 646 0 3,466 Investment fund units 696 1,127 5 1,828 404 294 0 698 Derivative financial instruments 746 156,884 3,471 161,102 385 118,498 1,996 120,880 of which: Foreign exchange contracts 316 70,149 61 70,527 248 53,705 60 54,013 Interest rate contracts 0 43,389 527 43,916 7 36,434 130 36,571 Equity / index contracts 0 38,870 2,306 41,176 3 24,171 1,293 25,468 Credit derivative contracts 0 2,403 528 2,931 0 2,448 512 2,960 Commodity contracts 0 2,003 24 2,027 0 1,707 0 1,707 Financial liabilities designated at fair value on a recurring basis Brokerage payables designated at fair value 0 38,742 0 38,742 0 37,233 0 37,233 Debt issued designated at fair value 0 50,273 9,595 59,868 0 56,943 9,649 66,592 Other financial liabilities designated at fair value 0 29,682 2,091 31,773 0 35,119 1,039 36,157 of which: Financial liabilities related to unit-linked investment contracts 0 20,975 0 20,975 0 28,145 0 28,145 Securities financing transactions 0 7,317 0 7,317 0 5,742 0 5,742 Over-the-counter debt instruments 0 1,363 697 2,060 0 1,231 791 2,022 Total liabilities measured at fair value 27,635 282,233 15,212 325,080 26,176 252,518 12,759 291,452 1 Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented. 2 Other non-financial assets primarily consist of properties and other non-current assets held for sale, which are measured at the lower of their net carrying amount or fair value less costs to sell. Valuation techniques and inputs used in the fair value measurement of Level 3 assets and liabilities Fair value Significant unobservable input(s) 1 Range of inputs Assets Liabilities Valuation technique(s) 31.12.20 31.12.19 USD billion 31.12.20 31.12.19 31.12.20 31.12.19 low high weighted average 2 low high weighted average 2 unit 1 Financial assets and liabilities at fair value held for trading and Financial assets at fair value not held for trading Corporate and municipal bonds 1.2 0.5 0.0 0.0 Relative value to market comparable Bond price equivalent 1 143 100 0 143 101 points Discounted expected cash flows Discount margin 268 268 basis points Traded loans, loans measured at fair value, loan commitments and guarantees 2.4 2.4 0.0 0.0 Relative value to market comparable Loan price equivalent 0 101 99 0 101 99 points Discounted expected cash flows Credit spread 190 800 225 530 basis points Market comparable and securitization model Credit spread 40 1,858 333 45 1,412 244 basis points Auction rate securities 3 1.5 1.5 Relative value to market comparable Bond price equivalent 79 98 88 points Discounted expected cash flows Credit spread 100 188 140 basis points Investment fund units 4 0.1 0.1 0.0 0.0 Relative value to market comparable Net asset value Equity instruments 4 0.7 0.7 0.0 0.1 Relative value to market comparable Price Debt issued designated at fair value 5 11.0 9.9 Other financial liabilities designated at fair value 0.7 0.8 Discounted expected cash flows Funding spread 42 175 44 175 basis points Derivative financial instruments Interest rate contracts 0.5 0.3 0.5 0.1 Option model Volatility of interest rates 29 69 15 63 basis points Credit derivative contracts 0.3 0.4 0.5 0.5 Discounted expected cash flows Credit spreads 1 489 1 700 basis points Bond price equivalent 0 100 0 100 points Equity / index contracts 0.9 0.6 2.3 1.3 Option model Equity dividend yields 0 13 0 14 % Volatility of equity stocks, equity and other indices 4 100 4 105 % Equity-to-FX correlation (34) 65 (45) 71 % Equity-to-equity correlation (16) 100 (17) 98 % 1 The ranges of significant unobservable inputs are represented in points, percentages and basis points. Points are a percentage of par (e.g., 100 points would be 100% of par). 2 Weighted averages are provided for non-derivative financial instruments and were calculated by weighting inputs based on the fair values of the respective instruments. Weighted averages are not provided for inputs related to derivative contracts, as this would not be meaningful. 3 Bond price equivalent prior to the fourth quarter of 2020; discounted cash flow model thereafter. 4 The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments. 5 Debt issued designated at fair value is composed primarily of UBS structured notes, which include variable maturity notes with various equity and foreign exchange underlying risks, rates-linked and credit-linked notes, all of which have embedded derivative parameters that are considered to be unobservable. The equivalent derivative instrument parameters are presented in the respective derivative financial instruments lines in this table.
Disclosure Of Fair Value Measurement Of Liabilities Explanatory	Determination of fair values from quoted market prices or valuation techniques 1 31.12.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial assets measured at fair value on a recurring basis Financial assets at fair value held for trading 107,526 15,630 2,337 125,492 113,635 12,248 1,812 127,695 of which: Equity instruments 90,327 1,101 171 91,599 96,162 400 226 96,788 Government bills / bonds 9,028 2,207 10 11,245 9,630 1,770 64 11,464 Investment fund units 7,374 1,794 23 9,192 7,088 1,729 50 8,867 Corporate and municipal bonds 789 8,432 817 10,038 755 6,796 542 8,093 Loans 0 1,860 1,134 2,995 0 1,180 791 1,971 Asset-backed securities 8 236 181 425 0 372 140 512 Derivative financial instruments 795 157,069 1,754 159,618 356 120,224 1,264 121,843 of which: Foreign exchange contracts 319 68,425 5 68,750 240 52,228 8 52,476 Interest rate contracts 0 50,353 537 50,890 6 42,288 263 42,558 Equity / index contracts 0 33,990 853 34,842 7 22,220 597 22,825 Credit derivative contracts 0 2,008 350 2,358 0 1,612 394 2,007 Commodity contracts 0 2,211 6 2,217 0 1,820 0 1,821 Brokerage receivables 0 24,659 0 24,659 0 18,007 0 18,007 Financial assets at fair value not held for trading 40,986 35,110 3,942 80,038 40,608 39,065 3,962 83,636 of which: Financial assets for unit-linked investment contracts 20,628 101 2 20,731 27,568 118 0 27,686 Corporate and municipal bonds 290 16,957 372 17,619 653 18,732 0 19,385 Government bills / bonds 19,704 3,593 0 23,297 12,089 3,700 0 15,790 Loans 0 7,699 862 8,561 0 10,206 1,231 11,438 Securities financing transactions 0 6,629 122 6,751 0 6,148 147 6,294 Auction rate securities 0 0 1,527 1,527 0 0 1,536 1,536 Investment fund units 278 121 105 505 194 140 98 432 Equity instruments 86 0 544 631 103 4 451 559 Other 0 10 408 418 0 16 499 515 Financial assets measured at fair value through other comprehensive income on a recurring basis Financial assets measured at fair value through other comprehensive income 1,144 7,114 0 8,258 1,906 4,439 0 6,345 of which: Asset-backed securities 0 6,624 0 6,624 0 3,955 0 3,955 Government bills / bonds 1,103 47 0 1,150 1,859 16 0 1,875 Corporate and municipal bonds 40 444 0 485 47 468 0 515 Non-financial assets measured at fair value on a recurring basis Precious metals and other physical commodities 6,264 0 0 6,264 4,597 0 0 4,597 Non-financial assets measured at fair value on a non-recurring basis Other non-financial assets 2 0 1 245 246 0 0 199 199 Total assets measured at fair value 156,716 239,583 8,278 404,576 161,102 193,983 7,237 362,322 Determination of fair values from quoted market prices or valuation techniques (continued) 1 31.12.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial liabilities measured at fair value on a recurring basis Financial liabilities at fair value held for trading 26,889 6,652 55 33,595 25,791 4,726 75 30,591 of which: Equity instruments 22,519 425 40 22,985 22,526 149 59 22,734 Corporate and municipal bonds 31 4,048 9 4,089 40 3,606 16 3,661 Government bills / bonds 3,642 1,036 0 4,678 2,820 646 0 3,466 Investment fund units 696 1,127 5 1,828 404 294 0 698 Derivative financial instruments 746 156,884 3,471 161,102 385 118,498 1,996 120,880 of which: Foreign exchange contracts 316 70,149 61 70,527 248 53,705 60 54,013 Interest rate contracts 0 43,389 527 43,916 7 36,434 130 36,571 Equity / index contracts 0 38,870 2,306 41,176 3 24,171 1,293 25,468 Credit derivative contracts 0 2,403 528 2,931 0 2,448 512 2,960 Commodity contracts 0 2,003 24 2,027 0 1,707 0 1,707 Financial liabilities designated at fair value on a recurring basis Brokerage payables designated at fair value 0 38,742 0 38,742 0 37,233 0 37,233 Debt issued designated at fair value 0 50,273 9,595 59,868 0 56,943 9,649 66,592 Other financial liabilities designated at fair value 0 29,682 2,091 31,773 0 35,119 1,039 36,157 of which: Financial liabilities related to unit-linked investment contracts 0 20,975 0 20,975 0 28,145 0 28,145 Securities financing transactions 0 7,317 0 7,317 0 5,742 0 5,742 Over-the-counter debt instruments 0 1,363 697 2,060 0 1,231 791 2,022 Total liabilities measured at fair value 27,635 282,233 15,212 325,080 26,176 252,518 12,759 291,452 1 Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented. 2 Other non-financial assets primarily consist of properties and other non-current assets held for sale, which are measured at the lower of their net carrying amount or fair value less costs to sell. Valuation techniques and inputs used in the fair value measurement of Level 3 assets and liabilities Fair value Significant unobservable input(s) 1 Range of inputs Assets Liabilities Valuation technique(s) 31.12.20 31.12.19 USD billion 31.12.20 31.12.19 31.12.20 31.12.19 low high weighted average 2 low high weighted average 2 unit 1 Financial assets and liabilities at fair value held for trading and Financial assets at fair value not held for trading Corporate and municipal bonds 1.2 0.5 0.0 0.0 Relative value to market comparable Bond price equivalent 1 143 100 0 143 101 points Discounted expected cash flows Discount margin 268 268 basis points Traded loans, loans measured at fair value, loan commitments and guarantees 2.4 2.4 0.0 0.0 Relative value to market comparable Loan price equivalent 0 101 99 0 101 99 points Discounted expected cash flows Credit spread 190 800 225 530 basis points Market comparable and securitization model Credit spread 40 1,858 333 45 1,412 244 basis points Auction rate securities 3 1.5 1.5 Relative value to market comparable Bond price equivalent 79 98 88 points Discounted expected cash flows Credit spread 100 188 140 basis points Investment fund units 4 0.1 0.1 0.0 0.0 Relative value to market comparable Net asset value Equity instruments 4 0.7 0.7 0.0 0.1 Relative value to market comparable Price Debt issued designated at fair value 5 11.0 9.9 Other financial liabilities designated at fair value 0.7 0.8 Discounted expected cash flows Funding spread 42 175 44 175 basis points Derivative financial instruments Interest rate contracts 0.5 0.3 0.5 0.1 Option model Volatility of interest rates 29 69 15 63 basis points Credit derivative contracts 0.3 0.4 0.5 0.5 Discounted expected cash flows Credit spreads 1 489 1 700 basis points Bond price equivalent 0 100 0 100 points Equity / index contracts 0.9 0.6 2.3 1.3 Option model Equity dividend yields 0 13 0 14 % Volatility of equity stocks, equity and other indices 4 100 4 105 % Equity-to-FX correlation (34) 65 (45) 71 % Equity-to-equity correlation (16) 100 (17) 98 % 1 The ranges of significant unobservable inputs are represented in points, percentages and basis points. Points are a percentage of par (e.g., 100 points would be 100% of par). 2 Weighted averages are provided for non-derivative financial instruments and were calculated by weighting inputs based on the fair values of the respective instruments. Weighted averages are not provided for inputs related to derivative contracts, as this would not be meaningful. 3 Bond price equivalent prior to the fourth quarter of 2020; discounted cash flow model thereafter. 4 The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments. 5 Debt issued designated at fair value is composed primarily of UBS structured notes, which include variable maturity notes with various equity and foreign exchange underlying risks, rates-linked and credit-linked notes, all of which have embedded derivative parameters that are considered to be unobservable. The equivalent derivative instrument parameters are presented in the respective derivative financial instruments lines in this table.
Disclosure Of Deferred Day-One Profit Or Loss Explanatory	Deferred day-1 profit or loss reserves USD million 2020 2019 2018 Reserve balance at the beginning of the year 146 255 338 Profit / (loss) deferred on new transactions 362 171 341 (Profit) / loss recognized in the income statement (238) (278) (417) Foreign currency translation 0 (2) (6) Reserve balance at the end of the year 269 146 255
Disclosure of significant unobservable inputs used in fair value measurement of assets [text block]	Valuation techniques and inputs used in the fair value measurement of Level 3 assets and liabilities Fair value Significant unobservable input(s) 1 Range of inputs Assets Liabilities Valuation technique(s) 31.12.20 31.12.19 USD billion 31.12.20 31.12.19 31.12.20 31.12.19 low high weighted average 2 low high weighted average 2 unit 1 Financial assets and liabilities at fair value held for trading and Financial assets at fair value not held for trading Corporate and municipal bonds 1.2 0.5 0.0 0.0 Relative value to market comparable Bond price equivalent 1 143 100 0 143 101 points Discounted expected cash flows Discount margin 268 268 basis points Traded loans, loans measured at fair value, loan commitments and guarantees 2.4 2.4 0.0 0.0 Relative value to market comparable Loan price equivalent 0 101 99 0 101 99 points Discounted expected cash flows Credit spread 190 800 225 530 basis points Market comparable and securitization model Credit spread 40 1,858 333 45 1,412 244 basis points Auction rate securities 3 1.5 1.5 Relative value to market comparable Bond price equivalent 79 98 88 points Discounted expected cash flows Credit spread 100 188 140 basis points Investment fund units 4 0.1 0.1 0.0 0.0 Relative value to market comparable Net asset value Equity instruments 4 0.7 0.7 0.0 0.1 Relative value to market comparable Price Debt issued designated at fair value 5 11.0 9.9 Other financial liabilities designated at fair value 0.7 0.8 Discounted expected cash flows Funding spread 42 175 44 175 basis points Derivative financial instruments Interest rate contracts 0.5 0.3 0.5 0.1 Option model Volatility of interest rates 29 69 15 63 basis points Credit derivative contracts 0.3 0.4 0.5 0.5 Discounted expected cash flows Credit spreads 1 489 1 700 basis points Bond price equivalent 0 100 0 100 points Equity / index contracts 0.9 0.6 2.3 1.3 Option model Equity dividend yields 0 13 0 14 % Volatility of equity stocks, equity and other indices 4 100 4 105 % Equity-to-FX correlation (34) 65 (45) 71 % Equity-to-equity correlation (16) 100 (17) 98 % 1 The ranges of significant unobservable inputs are represented in points, percentages and basis points. Points are a percentage of par (e.g., 100 points would be 100% of par). 2 Weighted averages are provided for non-derivative financial instruments and were calculated by weighting inputs based on the fair values of the respective instruments. Weighted averages are not provided for inputs related to derivative contracts, as this would not be meaningful. 3 Bond price equivalent prior to the fourth quarter of 2020; discounted cash flow model thereafter. 4 The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments. 5 Debt issued designated at fair value is composed primarily of UBS structured notes, which include variable maturity notes with various equity and foreign exchange underlying risks, rates-linked and credit-linked notes, all of which have embedded derivative parameters that are considered to be unobservable. The equivalent derivative instrument parameters are presented in the respective derivative financial instruments lines in this table.
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [text block]	Valuation techniques and inputs used in the fair value measurement of Level 3 assets and liabilities Fair value Significant unobservable input(s) 1 Range of inputs Assets Liabilities Valuation technique(s) 31.12.20 31.12.19 USD billion 31.12.20 31.12.19 31.12.20 31.12.19 low high weighted average 2 low high weighted average 2 unit 1 Financial assets and liabilities at fair value held for trading and Financial assets at fair value not held for trading Corporate and municipal bonds 1.2 0.5 0.0 0.0 Relative value to market comparable Bond price equivalent 1 143 100 0 143 101 points Discounted expected cash flows Discount margin 268 268 basis points Traded loans, loans measured at fair value, loan commitments and guarantees 2.4 2.4 0.0 0.0 Relative value to market comparable Loan price equivalent 0 101 99 0 101 99 points Discounted expected cash flows Credit spread 190 800 225 530 basis points Market comparable and securitization model Credit spread 40 1,858 333 45 1,412 244 basis points Auction rate securities 3 1.5 1.5 Relative value to market comparable Bond price equivalent 79 98 88 points Discounted expected cash flows Credit spread 100 188 140 basis points Investment fund units 4 0.1 0.1 0.0 0.0 Relative value to market comparable Net asset value Equity instruments 4 0.7 0.7 0.0 0.1 Relative value to market comparable Price Debt issued designated at fair value 5 11.0 9.9 Other financial liabilities designated at fair value 0.7 0.8 Discounted expected cash flows Funding spread 42 175 44 175 basis points Derivative financial instruments Interest rate contracts 0.5 0.3 0.5 0.1 Option model Volatility of interest rates 29 69 15 63 basis points Credit derivative contracts 0.3 0.4 0.5 0.5 Discounted expected cash flows Credit spreads 1 489 1 700 basis points Bond price equivalent 0 100 0 100 points Equity / index contracts 0.9 0.6 2.3 1.3 Option model Equity dividend yields 0 13 0 14 % Volatility of equity stocks, equity and other indices 4 100 4 105 % Equity-to-FX correlation (34) 65 (45) 71 % Equity-to-equity correlation (16) 100 (17) 98 % 1 The ranges of significant unobservable inputs are represented in points, percentages and basis points. Points are a percentage of par (e.g., 100 points would be 100% of par). 2 Weighted averages are provided for non-derivative financial instruments and were calculated by weighting inputs based on the fair values of the respective instruments. Weighted averages are not provided for inputs related to derivative contracts, as this would not be meaningful. 3 Bond price equivalent prior to the fourth quarter of 2020; discounted cash flow model thereafter. 4 The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments. 5 Debt issued designated at fair value is composed primarily of UBS structured notes, which include variable maturity notes with various equity and foreign exchange underlying risks, rates-linked and credit-linked notes, all of which have embedded derivative parameters that are considered to be unobservable. The equivalent derivative instrument parameters are presented in the respective derivative financial instruments lines in this table.
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [text block]	Sensitivity of fair value measurements to changes in unobservable input assumptions 1 31.12.20 31.12.19 USD million Favorable changes Unfavorable changes Favorable changes Unfavorable changes Traded loans, loans designated at fair value, loan commitments and guarantees 29 (28) 46 (21) Securities financing transactions 40 (52) 11 (11) Auction rate securities 105 (105) 87 (87) Asset-backed securities 41 (41) 35 (40) Equity instruments 129 (96) 140 (80) Interest rate derivative contracts, net 11 (16) 8 (17) Credit derivative contracts, net 2 10 (14) 31 (35) Foreign exchange derivative contracts, net 20 (15) 12 (8) Equity / index derivative contracts, net 318 (294) 183 (197) Other 91 (107) 47 (51) Total 794 (768) 600 (547) 1 Sensitivity of issued and over-the-counter debt instruments is reported with the equivalent derivative or securities financing instrument. 2 Includes refinements applied in estimating valuation uncertainty, resulting from a move to use issuer-specific proxy credit default swap curves rather than generic curves.
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, liabilities [text block]	Sensitivity of fair value measurements to changes in unobservable input assumptions 1 31.12.20 31.12.19 USD million Favorable changes Unfavorable changes Favorable changes Unfavorable changes Traded loans, loans designated at fair value, loan commitments and guarantees 29 (28) 46 (21) Securities financing transactions 40 (52) 11 (11) Auction rate securities 105 (105) 87 (87) Asset-backed securities 41 (41) 35 (40) Equity instruments 129 (96) 140 (80) Interest rate derivative contracts, net 11 (16) 8 (17) Credit derivative contracts, net 2 10 (14) 31 (35) Foreign exchange derivative contracts, net 20 (15) 12 (8) Equity / index derivative contracts, net 318 (294) 183 (197) Other 91 (107) 47 (51) Total 794 (768) 600 (547) 1 Sensitivity of issued and over-the-counter debt instruments is reported with the equivalent derivative or securities financing instrument. 2 Includes refinements applied in estimating valuation uncertainty, resulting from a move to use issuer-specific proxy credit default swap curves rather than generic curves.
Disclosure Of Fair Value Of Financial Instruments Explanatory	Movements of Level 3 instruments 1 Total gains / losses included in comprehensive income Total gains / losses included in comprehensive income USD billion Balance as of 31 December 2018 Net gains / losses included in income 2 of which: related to Level 3 instruments held at the end of the reporting period Purchases Sales Issuances Settlements Transfers into Level 3 Transfers out of Level 3 Foreign currency translation Balance as of 31 December 2019 Balance as of 31 December 2019 3 Net gains / losses included in income 2 of which: related to Level 3 instruments held at the end of the reporting period Purchases Sales Issuances Settlements Transfers into Level 3 Transfers out of Level 3 Foreign currency translation Balance as of 31 December 2020 3 Financial assets at fair value held for trading 2.0 (0.1) 0.0 0.5 (1.3) 1.0 0.0 0.2 (0.4) 0.0 1.8 1.8 (0.1) (0.1) 0.8 (1.4) 1.0 0.0 0.3 0.0 0.0 2.3 of which: Investment fund units 0.4 0.0 0.0 0.0 (0.2) 0.0 0.0 0.0 (0.2) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Corporate and municipal bonds 0.7 0.0 0.0 0.3 (0.2) 0.0 0.0 0.0 (0.2) 0.0 0.5 0.5 0.0 0.0 0.7 (0.5) 0.0 0.0 0.1 0.0 0.0 0.8 Loans 0.7 (0.1) 0.0 0.0 (0.8) 1.0 0.0 0.0 0.0 0.0 0.8 0.8 0.0 (0.1) 0.0 (0.7) 1.0 0.0 0.1 0.0 0.0 1.1 Other 0.2 0.0 (0.1) 0.1 0.0 0.0 0.0 0.2 0.0 0.0 0.4 0.4 0.0 0.0 0.1 (0.3) 0.0 0.0 0.2 0.0 0.0 0.4 Derivative financial instruments – assets 1.4 (0.1) 0.0 0.0 0.0 0.4 (0.2) 0.1 (0.3) 0.0 1.3 1.3 0.3 0.4 0.0 0.0 0.7 (0.5) 0.1 (0.2) 0.1 1.8 of which: Interest rate contracts 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 (0.2) 0.0 0.3 0.3 0.2 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 Equity / index contracts 0.5 0.0 0.1 0.0 0.0 0.1 0.0 0.1 (0.1) 0.0 0.6 0.6 0.1 0.1 0.0 0.0 0.6 (0.3) 0.0 (0.1) 0.0 0.9 Credit derivative contracts 0.5 (0.1) (0.1) 0.0 0.0 0.2 (0.1) 0.0 (0.1) 0.0 0.4 0.4 0.0 0.0 0.0 0.0 0.1 (0.2) 0.1 0.0 0.0 0.3 Other 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Financial assets at fair value not held for trading 4.4 0.0 0.0 1.2 (0.6) 0.0 0.0 0.1 (1.2) 0.0 4.0 4.0 0.0 0.1 0.8 (0.9) 0.0 0.0 0.1 0.0 0.0 3.9 of which: Loans 1.8 0.0 0.0 0.7 (0.1) 0.0 0.0 0.1 (1.2) 0.0 1.2 1.2 0.0 0.0 0.3 (0.7) 0.0 0.0 0.0 0.0 0.0 0.9 Auction rate securities 1.7 0.0 0.0 0.0 (0.1) 0.0 0.0 0.0 0.0 0.0 1.5 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.5 Equity instruments 0.5 0.0 0.0 0.1 (0.2) 0.0 0.0 0.0 0.0 0.0 0.5 0.5 0.0 0.0 0.1 (0.1) 0.0 0.0 0.0 0.0 0.0 0.5 Other 0.5 0.0 0.0 0.5 (0.2) 0.0 0.0 0.0 0.0 0.0 0.7 0.7 0.0 0.0 0.4 (0.2) 0.0 0.0 0.0 0.0 0.0 1.0 Derivative financial instruments – liabilities 2.2 0.1 0.1 0.0 0.0 0.2 (0.4) 0.2 (0.3) 0.0 2.0 2.0 1.3 1.2 0.0 0.0 1.2 (0.9) 0.4 (0.6) 0.1 3.5 of which: Interest rate contracts 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 (0.1) 0.0 0.1 0.1 0.3 0.3 0.0 0.0 0.3 (0.2) 0.2 (0.2) 0.0 0.5 Equity / index contracts 1.4 0.3 0.2 0.0 0.0 0.0 (0.3) 0.1 (0.2) 0.0 1.3 1.3 1.0 0.8 0.0 0.0 0.8 (0.6) 0.1 (0.2) 0.0 2.3 Credit derivative contracts 0.5 (0.1) (0.1) 0.0 0.0 0.2 0.0 0.0 (0.1) 0.0 0.5 0.5 0.0 0.0 0.0 0.0 0.1 (0.1) 0.1 (0.2) 0.0 0.5 Other 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 Debt issued designated at fair value 11.0 0.8 0.7 0.0 0.0 5.8 (5.4) 0.7 (3.1) 0.0 9.9 9.9 0.2 0.0 0.0 0.0 7.6 (5.7) 0.5 (1.7) 0.2 11.0 Other financial liabilities designated at fair value 1.0 0.2 0.1 0.0 0.0 0.3 (0.7) 0.0 0.0 0.0 0.8 0.8 0.1 0.1 0.0 0.0 0.3 (0.5) 0.0 0.0 0.0 0.7 1 Effective 1 January 2020, UBS has enhanced its disclosure of Level 3 movements by excluding from the table the impacts of instruments purchased during the period and sold prior to the end of the period. Prior-period comparatives have been restated accordingly. 2 Net gains / losses included in comprehensive income are composed of Net interest income, Other net income from financial instruments measured at fair value through profit or loss and Other income. 3 Total Level 3 assets as of 31 December 2020 were USD 8.3 billion (31 December 2019: USD 7.2 billion). Total Level 3 liabilities as of 31 December 2020 were USD 15.2 billion (31 December 2019: USD 12.8 billion).
Own credit adjustments on financial liabilities designated at fair value	Own credit adjustments on financial liabilities designated at fair value Included in Other comprehensive income For the year ended USD million 31.12.20 31.12.19 31.12.18 Recognized during the period: Realized gain / (loss) 2 8 (3) Unrealized gain / (loss) (295) (408) 519 Total gain / (loss), before tax (293) (400) 517 As of USD million 31.12.20 31.12.19 31.12.18 Recognized on the balance sheet as of the end of the period: Unrealized life-to-date gain / (loss) (381) (88) 320
Valuation adjustments on financial instruments	Valuation adjustments on financial instruments As of Life-to-date gain / (loss), USD million 31.12.20 31.12.19 Credit valuation adjustments 1 (66) (48) Funding valuation adjustments 2 (73) (93) Debit valuation adjustments 0 1 Other valuation adjustments (820) (566) of which: liquidity (340) (300) of which: model uncertainty (479) (266) 1 Amounts do not include reserves against defaulted counterparties. 2 Includes FVAs on structured financing transactions of USD 6 million as of 31 December 2020 and USD 43 million as of 31 December 2019.
Disclosure Of Maximum Credit Risk Exposure Explanatory	Maximum exposure to credit risk 31.12.20 Maximum exposure to credit risk Collateral Credit enhancements Exposure to credit risk after collateral and credit enhancements USD billion Cash collateral received Collateral- ized by securities Secured by real estate Other collateral Netting Credit derivative contracts Guarantees Financial assets measured at fair value on the balance sheet Financial assets at fair value held for trading – debt instruments 1,2 24.7 24.7 Derivative financial instruments 3,4 159.6 6.0 138.4 15.2 Brokerage receivables 24.7 24.4 0.3 Financial assets at fair value not held for trading – debt instruments 5 58.2 13.2 45.0 Total financial assets measured at fair value 267.2 0.0 43.6 0.0 0.0 138.4 0.0 0.0 85.2 Guarantees 6 0.5 0.1 0.3 0.0 ##SL ##SL ##SL ##SL ##SL ##SL ##SL ##SL ##SL ##SL 31.12.19 Maximum exposure to credit risk Collateral Credit enhancements Exposure to credit risk after collateral and credit enhancements USD billion Cash collateral received Collateral- ized by securities Secured by real estate Other collateral Netting Credit derivative contracts Guarantees Financial assets measured at fair value on the balance sheet Financial assets at fair value held for trading – debt instruments 1,2 22.0 22.0 Derivative financial instruments 3,4 121.8 3.3 107.4 11.1 Brokerage receivables 18.0 0.0 17.8 0.2 Financial assets at fair value not held for trading – debt instruments 5 55.0 0.1 16.3 0.1 38.6 Total financial assets measured at fair value 216.8 0.1 37.4 0.0 0.1 107.4 0.0 0.0 71.9 Guarantees 6 1.0 0.3 0.7 1 These positions are generally managed under the market risk framework. For the purpose of this disclosure, collateral and credit enhancements were not considered. 2 Does not include investment fund units. 3 Includes USD 0 million (31 December 2019: USD 0 million) fair values of loan commitments and forward starting reverse repurchase agreements classified as derivatives. The full contractual committed amount of forward starting reverse repurchase agreements (generally highly collateralized) of USD 21.9 billion (31 December 2019: USD 20.3 billion) and derivative loan commitments (generally unsecured) of USD 9.4 billion (31 December 2019: USD 6.3 billion) is presented in Note 10 under notional amounts. 4 The amount shown in the “Netting” column represents the netting potential not recognized on the balance sheet. Refer to Note 22 for more information. 5 Financial assets at fair value not held for trading collateralized by securities consisted of structured loans and reverse repurchase and securities borrowing agreements. 6 The amount shown in the “Guarantees” column largely relates to sub-participations.
UBS AG \| Level 3 \| Not measured at fair value
Fair ValueMeasurement [Line Items]
Disclosure Of Fair Value Measurement Of Assets Explanatory	Financial instruments not measured at fair value 31.12.20 31.12.19 Carrying amount Fair value Carrying amount Fair value USD billion Total Carrying amount approximates fair value 1 Level 1 Level 2 Level 3 Total Total Carrying amount approximates fair value 1 Level 1 Level 2 Level 3 Total Assets 2 Cash and balances at central banks 158.2 158.1 0.1 0.0 0.0 158.2 107.1 107.0 0.1 0.0 0.0 107.1 Loans and advances to banks 15.3 14.6 0.0 0.6 0.1 15.3 12.4 11.7 0.0 0.5 0.2 12.4 Receivables from securities financing transactions 74.2 64.9 0.0 7.6 1.7 74.2 84.2 74.0 0.0 8.6 1.6 84.2 Cash collateral receivables on derivative instruments 32.7 32.7 0.0 0.0 0.0 32.7 23.3 23.3 0.0 0.0 0.0 23.3 Loans and advances to customers 381.0 173.1 0.0 34.2 174.9 382.3 328.0 152.5 0.0 25.7 152.2 330.3 Other financial assets measured at amortized cost 27.2 5.4 9.4 10.9 2.3 28.0 23.0 5.8 8.4 6.4 2.8 23.3 Liabilities Amounts due to banks 11.0 8.5 0.0 2.6 0.0 11.1 6.6 5.6 0.0 0.9 0.0 6.6 Payables from securities financing transactions 6.3 6.0 0.0 0.2 0.0 6.3 7.8 7.5 0.0 0.3 0.0 7.8 Cash collateral payables on derivative instruments 37.3 37.3 0.0 0.0 0.0 37.3 31.4 31.4 0.0 0.0 0.0 31.4 Customer deposits 527.9 521.8 0.0 6.2 0.0 528.0 450.6 440.5 0.0 10.2 0.0 450.7 Funding from UBS Group AG and its subsidiaries 54.0 0.0 0.0 55.6 0.0 55.6 47.9 0.0 0.0 49.6 0.0 49.6 Debt issued measured at amortized cost 85.4 16.4 0.0 70.0 0.0 86.3 62.8 8.7 0.0 55.5 0.0 64.3 Other financial liabilities measured at amortized cost 3 6.6 6.6 0.0 0.0 0.1 6.7 6.5 6.5 0.0 0.0 0.0 6.5 1 Includes certain financial instruments where the carrying amount is a reasonable approximation of the fair value due to the instruments’ short-term nature (instruments that are receivable or payable on demand, or with a remaining maturity (excluding the effects of callable features) of three months or less). 2 As of 31 December 2020, USD 0 billion of Loans and advances to banks, USD 1 billion of Receivables from securities financing transactions, USD 163 billion of Loans and advances to customers and USD 20 billion of Other financial assets measured at amortized cost were expected to be recovered or settled after 12 months. As of 31 December 2019, USD 0 billion of Loans and advances to banks, USD 1 billion of Receivables from securities financing transactions, USD 140 billion of Loans and advances to customers and USD 16 billion of Other financial assets measured at amortized cost were expected to be recovered or settled after 12 months. 3 Excludes lease liabilities.
Disclosure Of Fair Value Measurement Of Liabilities Explanatory	Financial instruments not measured at fair value 31.12.20 31.12.19 Carrying amount Fair value Carrying amount Fair value USD billion Total Carrying amount approximates fair value 1 Level 1 Level 2 Level 3 Total Total Carrying amount approximates fair value 1 Level 1 Level 2 Level 3 Total Assets 2 Cash and balances at central banks 158.2 158.1 0.1 0.0 0.0 158.2 107.1 107.0 0.1 0.0 0.0 107.1 Loans and advances to banks 15.3 14.6 0.0 0.6 0.1 15.3 12.4 11.7 0.0 0.5 0.2 12.4 Receivables from securities financing transactions 74.2 64.9 0.0 7.6 1.7 74.2 84.2 74.0 0.0 8.6 1.6 84.2 Cash collateral receivables on derivative instruments 32.7 32.7 0.0 0.0 0.0 32.7 23.3 23.3 0.0 0.0 0.0 23.3 Loans and advances to customers 381.0 173.1 0.0 34.2 174.9 382.3 328.0 152.5 0.0 25.7 152.2 330.3 Other financial assets measured at amortized cost 27.2 5.4 9.4 10.9 2.3 28.0 23.0 5.8 8.4 6.4 2.8 23.3 Liabilities Amounts due to banks 11.0 8.5 0.0 2.6 0.0 11.1 6.6 5.6 0.0 0.9 0.0 6.6 Payables from securities financing transactions 6.3 6.0 0.0 0.2 0.0 6.3 7.8 7.5 0.0 0.3 0.0 7.8 Cash collateral payables on derivative instruments 37.3 37.3 0.0 0.0 0.0 37.3 31.4 31.4 0.0 0.0 0.0 31.4 Customer deposits 527.9 521.8 0.0 6.2 0.0 528.0 450.6 440.5 0.0 10.2 0.0 450.7 Funding from UBS Group AG and its subsidiaries 54.0 0.0 0.0 55.6 0.0 55.6 47.9 0.0 0.0 49.6 0.0 49.6 Debt issued measured at amortized cost 85.4 16.4 0.0 70.0 0.0 86.3 62.8 8.7 0.0 55.5 0.0 64.3 Other financial liabilities measured at amortized cost 3 6.6 6.6 0.0 0.0 0.1 6.7 6.5 6.5 0.0 0.0 0.0 6.5 1 Includes certain financial instruments where the carrying amount is a reasonable approximation of the fair value due to the instruments’ short-term nature (instruments that are receivable or payable on demand, or with a remaining maturity (excluding the effects of callable features) of three months or less). 2 As of 31 December 2020, USD 0 billion of Loans and advances to banks, USD 1 billion of Receivables from securities financing transactions, USD 163 billion of Loans and advances to customers and USD 20 billion of Other financial assets measured at amortized cost were expected to be recovered or settled after 12 months. As of 31 December 2019, USD 0 billion of Loans and advances to banks, USD 1 billion of Receivables from securities financing transactions, USD 140 billion of Loans and advances to customers and USD 16 billion of Other financial assets measured at amortized cost were expected to be recovered or settled after 12 months. 3 Excludes lease liabilities.

Offsetting financial assets a_2

Offsetting financial assets and financial liabilities (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure Offsetting Financial Assets And Financial Liabilities [Line Items]
Disclosure Of Offsetting Of Financial Assets Explanatory	Financial assets subject to offsetting, enforceable master netting arrangements and similar agreements Assets subject to netting arrangements Netting recognized on the balance sheet Netting potential not recognized on the balance sheet 3 Assets not subject to netting arrangements 4 Total assets As of 31.12.20, USD billion Gross assets before netting Netting with gross liabilities 2 Net assets recognized on the balance sheet Financial liabilities Collateral received Assets after consideration of netting potential Assets recognized on the balance sheet Total assets after consideration of netting potential Total assets recognized on the balance sheet Receivables from securities financing transactions 70.3 (13.4) 57.0 (1.7) (55.3) 0.0 17.3 17.3 74.2 Derivative financial instruments 156.9 (5.0) 151.9 (117.2) (27.2) 7.5 7.7 15.2 159.6 Cash collateral receivables on derivative instruments 1 31.9 0.0 31.9 (19.6) (1.5) 10.8 0.8 11.6 32.7 Financial assets at fair value not held for trading 85.6 (79.1) 6.5 (0.8) (5.8) 0.0 73.9 73.9 80.4 of which: reverse repurchase agreements 85.6 (79.1) 6.5 (0.8) (5.8) 0.0 0.2 0.2 6.7 Total assets 344.8 (97.5) 247.3 (139.3) (89.8) 18.3 99.7 117.9 346.9 As of 31.12.19, USD billion Receivables from securities financing transactions 83.2 (14.0) 69.2 (1.2) (68.0) 0.0 15.0 15.0 84.2 Derivative financial instruments 120.2 (3.4) 116.8 (89.3) (21.4) 6.1 5.0 11.1 121.8 Cash collateral receivables on derivative instruments 1 26.4 (4.0) 22.4 (13.3) (1.1) 8.0 0.9 8.9 23.3 Financial assets at fair value not held for trading 83.1 (77.5) 5.6 0.0 (5.6) 0.0 78.3 78.3 83.9 of which: reverse repurchase agreements 83.0 (77.5) 5.4 0.0 (5.4) 0.0 0.9 0.9 6.3 Total assets 313.0 (98.9) 214.0 (103.8) (96.1) 14.1 99.3 113.4 313.3 1 The net amount of Cash collateral receivables on derivative instruments recognized on the balance sheet includes certain OTC derivatives that are net settled on a daily basis either legally or in substance under IAS 32 principles and exchange-traded derivatives that are economically settled on a daily basis. 2 The logic of the table results in amounts presented in the “Netting with gross liabilities” column corresponding directly to the amounts presented in the “Netting with gross assets” column in the liabilities table presented on the following page. Netting in this column for reverse repurchase agreements presented within the lines “Receivables from securities financing transactions” and “Financial assets at fair value not held for trading” taken together corresponds to the amounts presented for repurchase agreements in the “Payables from securities financing transactions” and “Other financial liabilities designated at fair value” lines in the liabilities table presented on the following page. 3 For the purpose of this disclosure, the amounts of financial instruments and cash collateral presented have been capped so as not to exceed the net amount of financial assets presented on the balance sheet; i.e., over-collateralization, where it exists, is not reflected in the table. 4 Includes assets not subject to enforceable netting arrangements and other out-of-scope items.
Disclosure Of Offsetting Of Financial Liabilities Explanatory	Financial liabilities subject to offsetting, enforceable master netting arrangements and similar agreements Liabilities subject to netting arrangements Netting recognized on the balance sheet Netting potential not recognized on the balance sheet 3 Liabilities not subject to netting arrangements 4 Total liabilities As of 31.12.20, USD billion Gross liabilities before netting Netting with gross assets 2 Net liabilities recognized on the balance sheet Financial assets Collateral pledged Liabilities after consideration of netting potential Liabilities recognized on the balance sheet Total liabilities after consideration of netting potential Total liabilities recognized on the balance sheet Payables from securities financing transactions 18.2 (13.3) 4.9 (1.6) (3.3) 0.0 1.4 1.4 6.3 Derivative financial instruments 157.1 (5.0) 152.1 (117.2) (23.9) 10.9 9.0 19.9 161.1 Cash collateral payables on derivative instruments 1 35.6 0.0 35.6 (19.6) (2.1) 13.9 1.7 15.7 37.3 Other financial liabilities designated at fair value 87.0 (79.2) 7.8 (0.8) (6.3) 0.7 22.6 23.3 30.4 of which: repurchase agreements 86.2 (79.2) 7.0 (0.8) (6.3) 0.0 0.3 0.3 7.3 Total liabilities 297.8 (97.5) 200.3 (139.2) (35.5) 25.6 34.8 60.4 235.1 As of 31.12.19, USD billion Payables from securities financing transactions 19.8 (14.0) 5.8 (0.8) (5.0) 0.0 2.0 2.0 7.8 Derivative financial instruments 118.1 (3.4) 114.8 (89.3) (16.8) 8.6 6.1 14.8 120.9 Cash collateral payables on derivative instruments 1 34.2 (4.0) 30.1 (16.5) (1.7) 12.0 1.3 13.3 31.4 Other financial liabilities designated at fair value 83.5 (77.6) 5.9 (0.4) (5.6) 0.0 30.0 30.0 35.9 of which: repurchase agreements 83.1 (77.6) 5.5 (0.4) (5.2) 0.0 0.2 0.2 5.7 Total liabilities 255.6 (98.9) 156.6 (107.0) (29.0) 20.6 39.4 60.0 196.0 1 The net amount of Cash collateral payables on derivative instruments recognized on the balance sheet includes certain OTC derivatives that are net settled on a daily basis either legally or in substance under IAS 32 principles and exchange-traded derivatives that are economically settled on a daily basis. 2 The logic of the table results in amounts presented in the “Netting with gross assets” column corresponding to the amounts presented in the “Netting with gross liabilities” column in the assets table presented on the previous page. Netting in this column for repurchase agreements presented within the lines “Payables from securities financing transactions” and “Other financial liabilities designated at fair value” taken together corresponds to the amounts presented for reverse repurchase agreements in the “Receivables from securities financing transactions” and “Financial assets at fair value not held for trading” lines in the assets table presented on the previous page. 3 For the purpose of this disclosure, the amounts of financial instruments and cash collateral presented have been capped so as not to exceed the net amount of financial liabilities presented on the balance sheet; i.e., over-collateralization, where it exists, is not reflected in the table. 4 Includes liabilities not subject to enforceable netting arrangements and other out-of-scope items.
UBS AG
Disclosure Offsetting Financial Assets And Financial Liabilities [Line Items]
Disclosure Of Offsetting Of Financial Assets Explanatory	Financial assets subject to offsetting, enforceable master netting arrangements and similar agreements Assets subject to netting arrangements Netting recognized on the balance sheet Netting potential not recognized on the balance sheet 3 Assets not subject to netting arrangements 4 Total assets As of 31.12.20, USD billion Gross assets before netting Netting with gross liabilities 2 Net assets recognized on the balance sheet Financial liabilities Collateral received Assets after consideration of netting potential Assets recognized on the balance sheet Total assets after consideration of netting potential Total assets recognized on the balance sheet Receivables from securities financing transactions 70.3 (13.4) 57.0 (1.7) (55.3) 0.0 17.3 17.3 74.2 Derivative financial instruments 156.9 (5.0) 151.9 (117.2) (27.2) 7.5 7.7 15.2 159.6 Cash collateral receivables on derivative instruments 1 31.9 0.0 31.9 (19.6) (1.5) 10.8 0.8 11.6 32.7 Financial assets at fair value not held for trading 85.6 (79.1) 6.5 (0.8) (5.8) 0.0 73.5 73.5 80.0 of which: reverse repurchase agreements 85.6 (79.1) 6.5 (0.8) (5.8) 0.0 0.2 0.2 6.7 Total assets 344.8 (97.5) 247.3 (139.3) (89.8) 18.3 99.3 117.6 346.6 As of 31.12.19, USD billion Receivables from securities financing transactions 83.2 (14.0) 69.2 (1.2) (68.0) 0.0 15.0 15.0 84.2 Derivative financial instruments 120.2 (3.4) 116.8 (89.3) (21.4) 6.1 5.0 11.1 121.8 Cash collateral receivables on derivative instruments 1 26.4 (4.0) 22.4 (13.3) (1.1) 8.0 0.9 8.9 23.3 Financial assets at fair value not held for trading 83.1 (77.5) 5.6 0.0 (5.6) 0.0 78.0 78.0 83.6 of which: reverse repurchase agreements 83.0 (77.5) 5.4 0.0 (5.4) 0.0 0.9 0.9 6.3 Total assets 313.0 (98.9) 214.0 (103.8) (96.1) 14.1 99.0 113.1 313.0 1 The net amount of Cash collateral receivables on derivative instruments recognized on the balance sheet includes certain OTC derivatives that are net settled on a daily basis either legally or in substance under IAS 32 principles and exchange-traded derivatives that are economically settled on a daily basis. 2 The logic of the table results in amounts presented in the “Netting with gross liabilities” column corresponding directly to the amounts presented in the “Netting with gross assets” column in the liabilities table presented on the following page. Netting in this column for reverse repurchase agreements presented within the lines “Receivables from securities financing transactions” and “Financial assets at fair value not held for trading” taken together corresponds to the amounts presented for repurchase agreements in the “Payables from securities financing transactions” and “Other financial liabilities designated at fair value” lines in the liabilities table presented on the following page. 3 For the purpose of this disclosure, the amounts of financial instruments and cash collateral presented have been capped so as not to exceed the net amount of financial assets presented on the balance sheet; i.e., over-collateralization, where it exists, is not reflected in the table. 4 Includes assets not subject to enforceable netting arrangements and other out-of-scope items.
Disclosure Of Offsetting Of Financial Liabilities Explanatory	Financial liabilities subject to offsetting, enforceable master netting arrangements and similar agreements Liabilities subject to netting arrangements Netting recognized on the balance sheet Netting potential not recognized on the balance sheet 3 Liabilities not subject to netting arrangements 4 Total liabilities As of 31.12.20, USD billion Gross liabilities before netting Netting with gross assets 2 Net liabilities recognized on the balance sheet Financial assets Collateral pledged Liabilities after consideration of netting potential Liabilities recognized on the balance sheet Total liabilities after consideration of netting potential Total liabilities recognized on the balance sheet Payables from securities financing transactions 18.2 (13.3) 4.9 (1.6) (3.3) 0.0 1.4 1.4 6.3 Derivative financial instruments 157.1 (5.0) 152.1 (117.2) (23.9) 10.9 9.0 19.9 161.1 Cash collateral payables on derivative instruments 1 35.6 0.0 35.6 (19.6) (2.1) 13.9 1.7 15.7 37.3 Other financial liabilities designated at fair value 87.0 (79.2) 7.8 (0.8) (6.3) 0.7 24.0 24.7 31.8 of which: repurchase agreements 86.2 (79.2) 7.0 (0.8) (6.3) 0.0 0.3 0.3 7.3 Total liabilities 297.8 (97.5) 200.3 (139.2) (35.5) 25.6 36.2 61.7 236.5 As of 31.12.19, USD billion Payables from securities financing transactions 19.8 (14.0) 5.8 (0.8) (5.0) 0.0 2.0 2.0 7.8 Derivative financial instruments 118.1 (3.4) 114.8 (89.3) (16.8) 8.6 6.1 14.8 120.9 Cash collateral payables on derivative instruments 1 34.2 (4.0) 30.1 (16.5) (1.7) 12.0 1.3 13.3 31.4 Other financial liabilities designated at fair value 83.5 (77.6) 5.9 (0.4) (5.6) 0.0 30.2 30.2 36.2 of which: repurchase agreements 83.1 (77.6) 5.5 (0.4) (5.2) 0.0 0.2 0.2 5.7 Total liabilities 255.6 (98.9) 156.6 (107.0) (29.0) 20.6 39.6 60.2 196.2 1 The net amount of Cash collateral payables on derivative instruments recognized on the balance sheet includes certain OTC derivatives that are net settled on a daily basis either legally or in substance under IAS 32 principles and exchange-traded derivatives that are economically settled on a daily basis. 2 The logic of the table results in amounts presented in the “Netting with gross assets” column corresponding to the amounts presented in the “Netting with gross liabilities” column in the assets table presented on the previous page. Netting in this column for repurchase agreements presented within the lines “Payables from securities financing transactions” and “Other financial liabilities designated at fair value” taken together corresponds to the amounts presented for reverse repurchase agreements in the “Receivables from securities financing transactions” and “Financial assets at fair value not held for trading” lines in the assets table presented on the previous page. 3 For the purpose of this disclosure, the amounts of financial instruments and cash collateral presented have been capped so as not to exceed the net amount of financial liabilities presented on the balance sheet; i.e., over-collateralization, where it exists, is not reflected in the table. 4 Includes liabilities not subject to enforceable netting arrangements and other out-of-scope items.

Restricted financial assets (Ta

Restricted financial assets (Tables)	12 Months Ended
Restricted financial assets (Tables)	Dec. 31, 2020
Notes Disclosure Restricted Financial Assets [Line Items]
Disclosure of restricted financial assets [text block]	Restricted financial assets USD million 31.12.20 31.12.19 Financial assets pledged as collateral Financial assets at fair value held for trading 64,367 56,415 of which: assets pledged as collateral that may be sold or repledged by counterparties 47,098 41,285 Loans and advances to customers 20,361 18,399 of which: mortgage loans 1 18,191 18,399 Financial assets at fair value not held for trading 2,140 188 of which: assets pledged as collateral that may be sold or repledged by counterparties 2,140 188 Debt securities classified as Other financial assets measured at amortized cost 2,506 1,212 of which: assets pledged as collateral that may be sold or repledged by counterparties 2,506 1,212 Financial assets measured at fair value through other comprehensive income 149 0 of which: assets pledged as collateral that may be sold or repledged by counterparties 149 0 Total financial assets pledged as collateral 2 89,523 76,215 Other restricted financial assets Loans and advances to banks 3,730 3,131 Financial assets at fair value held for trading 741 242 Cash collateral receivables on derivative instruments 3,765 2,986 Loans and advances to customers 756 620 Financial assets at fair value not held for trading 23,243 29,676 Financial assets measured at fair value through other comprehensive income 0 176 Other 110 379 Total other restricted financial assets 32,345 37,210 Total financial assets pledged and other restricted financial assets 121,868 113,425 1 All related to mortgage loans that serve as collateral for existing liabilities toward Swiss central mortgage institutions and for existing covered bond issuances. Of these pledged mortgage loans, approximately USD 2.7 billion for 31 December 2020 (31 December 2019: approximately USD 6.3 billion) could be withdrawn or used for future liabilities or covered bond issuances without breaching existing collateral requirements. 2 Does not include assets placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes (31 December 2020: USD 1.3 billion; 31 December 2019: USD 0.6 billion).
UBS AG
Notes Disclosure Restricted Financial Assets [Line Items]
Disclosure of restricted financial assets [text block]	Restricted financial assets USD million 31.12.20 31.12.19 Financial assets pledged as collateral Financial assets at fair value held for trading 64,418 56,548 of which: assets pledged as collateral that may be sold or repledged by counterparties 47,098 41,285 Loans and advances to customers 20,361 18,399 of which: mortgage loans 1 18,191 18,399 Financial assets at fair value not held for trading 2,140 188 of which: assets pledged as collateral that may be sold or repledged by counterparties 2,140 188 Debt securities classified as Other financial assets measured at amortized cost 2,506 1,212 of which: assets pledged as collateral that may be sold or repledged by counterparties 2,506 1,212 Financial assets measured at fair value through other comprehensive income 149 0 of which: assets pledged as collateral that may be sold or repledged by counterparties 149 0 Total financial assets pledged as collateral 2 89,574 76,347 Other restricted financial assets Loans and advances to banks 3,730 2,353 Financial assets at fair value held for trading 741 242 Cash collateral receivables on derivative instruments 3,765 2,986 Loans and advances to customers 756 620 Financial assets at fair value not held for trading 22,917 29,368 Financial assets measured at fair value through other comprehensive income 0 176 Other 110 382 Total other restricted financial assets 32,019 36,126 Total financial assets pledged and other restricted financial assets 121,593 112,474 1 All related to mortgage loans that serve as collateral for existing liabilities toward Swiss central mortgage institutions and for existing covered bond issuances. Of these pledged mortgage loans, approximately USD 2.7 billion for 31 December 2020 (31 December 2019: approximately USD 6.3 billion) could be withdrawn or used for future liabilities or covered bond issuances without breaching existing collateral requirements. 2 Does not include assets placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes (31 December 2020: USD 1.3 billion; 31 December 2019: USD 0.6 billion).

Transferred financial assets _3

Transferred financial assets that are not derecognized in their entirety (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Transferred Financial Assets Not Derecognized [Line Items]
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition Explanatory	Transferred financial assets subject to continued recognition in full USD million 31.12.20 31.12.19 Carrying amount of transferred assets Carrying amount of associated liabilities recognized on balance sheet Carrying amount of transferred assets Carrying amount of associated liabilities recognized on balance sheet Financial assets at fair value held for trading that may be sold or repledged by counterparties 47,098 18,874 41,285 16,671 relating to securities lending and repurchase agreements in exchange for cash received 19,177 18,874 16,945 16,671 relating to securities lending agreements in exchange for securities received 27,595 0 24,082 0 relating to other financial asset transfers 326 0 258 0 Financial assets at fair value not held for trading that may be sold or repledged by counterparties 2,140 1,378 188 187 Debt securities classified as Other financial assets measured at amortized cost that may be sold or repledged by counterparties 1 2,506 1,963 1,212 690 Financial assets measured at fair value through other comprehensive income that may be sold or repledged by counterparties 149 148 0 0 Total financial assets transferred 1 51,893 22,363 42,685 17,548 1 Comparative information has been amended to include Debt securities classified as Other financial assets measured at amortized cost that may be sold or repledged by counterparties.
UBS AG
Notes Transferred Financial Assets Not Derecognized [Line Items]
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition Explanatory	Transferred financial assets subject to continued recognition in full USD million 31.12.20 31.12.19 Carrying amount of transferred assets Carrying amount of associated liabilities recognized on balance sheet Carrying amount of transferred assets Carrying amount of associated liabilities recognized on balance sheet Financial assets at fair value held for trading that may be sold or repledged by counterparties 47,098 18,874 41,285 16,671 relating to securities lending and repurchase agreements in exchange for cash received 19,177 18,874 16,945 16,671 relating to securities lending agreements in exchange for securities received 27,595 0 24,082 0 relating to other financial asset transfers 326 0 258 0 Financial assets at fair value not held for trading that may be sold or repledged by counterparties 2,140 1,378 188 187 Debt securities classified as Other financial assets measured at amortized cost that may be sold or repledged by counterparties 1 2,506 1,963 1,212 690 Financial assets measured at fair value through other comprehensive income that may be sold or repledged by counterparties 149 148 0 0 Total financial assets transferred 1 51,893 22,363 42,685 17,548 1 Comparative information has been amended to include Debt securities classified as Other financial assets measured at amortized cost that may be sold or repledged by counterparties.

Off-balance sheet assets rece_2

Off-balance sheet assets received (Tables)	12 Months Ended
Off-balance sheet assets received (Tables)	Dec. 31, 2020
Notes Off-balance Sheet Assets Received [Line Items]
Tabular disclosure of off-balance sheet assets received [text block]	Off-balance sheet assets received USD million 31.12.20 31.12.19 Fair value of assets received that can be sold or repledged 500,689 475,726 received as collateral under reverse repurchase, securities borrowing and lending arrangements, derivative and other transactions 1 487,904 466,045 received in unsecured borrowings 12,785 9,681 Thereof sold or repledged 2 367,258 350,477 in connection with financing activities 315,603 305,362 to satisfy commitments under short sale transactions 33,595 30,591 in connection with derivative and other transactions 1 18,059 14,524 1 Includes securities received as initial margin from its clients that UBS is required to remit to central counterparties, brokers and deposit banks through its exchange-traded derivative clearing and execution services. 2 Does not include off-balance sheet securities (31 December 2020: USD 18.9 billion; 31 December 2019: USD 19.6 billion) placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes for which there are no associated liabilities or contingent liabilities.
UBS AG
Notes Off-balance Sheet Assets Received [Line Items]
Tabular disclosure of off-balance sheet assets received [text block]	Off-balance sheet assets received USD million 31.12.20 31.12.19 Fair value of assets received that can be sold or repledged 500,689 475,726 received as collateral under reverse repurchase, securities borrowing and lending arrangements, derivative and other transactions 1 487,904 466,045 received in unsecured borrowings 12,785 9,681 Thereof sold or repledged 2 367,258 351,327 in connection with financing activities 315,603 306,212 to satisfy commitments under short sale transactions 33,595 30,591 in connection with derivative and other transactions 1 18,059 14,524 1 Includes securities received as initial margin from its clients that UBS AG is required to remit to central counterparties, brokers and deposit banks through its exchange-traded derivative clearing and execution services. 2 Does not include off-balance sheet securities (31 December 2020: USD 18.9 billion; 31 December 2019: USD 19.6 billion) placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes for which there are no associated liabilities or contingent liabilities.

Maturity analysis of financia_2

Maturity analysis of financial liabilities (Tables)	12 Months Ended
Maturity analysis of financial liabilities (Tables)	Dec. 31, 2020
Disclosure Offsetting Financial Assets And Financial Liabilities [Line Items]
Disclosure of maturity analysis for financial liabilities [text block]	Maturity analysis of financial liabilities 31.12.20 USD billion Due within 1 month Due between 1 and 3 months Due between 3 and 12 months Due between 1 and 5 years Due after 5 years Total Financial liabilities recognized on balance sheet 1 Amounts due to banks 6.1 2.4 2.1 0.5 0.0 11.1 Payables from securities financing transactions 5.6 0.4 0.3 0.0 0.0 6.3 Cash collateral payables on derivative instruments 37.3 37.3 Customer deposits 512.8 6.6 3.5 1.8 0.2 524.9 Debt issued measured at amortized cost 2 9.0 8.3 41.9 53.7 35.6 148.5 Other financial liabilities measured at amortized cost 4.5 0.1 0.5 2.0 1.8 8.9 of which: lease liabilities 0.1 0.1 0.5 2.0 1.8 4.5 Total financial liabilities measured at amortized cost 575.3 17.9 48.2 58.0 37.7 737.1 Financial liabilities at fair value held for trading 3,4 33.6 33.6 Derivative financial instruments 3,5 161.1 161.1 Brokerage payables designated at fair value 38.7 38.7 Debt issued designated at fair value 6 21.9 16.8 7.1 9.2 9.5 64.5 Other financial liabilities designated at fair value 27.9 0.6 0.6 0.7 1.1 30.9 Total financial liabilities measured at fair value through profit or loss 283.2 17.4 7.7 9.9 10.6 328.8 Total 858.5 35.3 56.0 67.9 48.3 1,065.9 Guarantees, commitments and forward starting transactions Loan commitments 7 40.5 0.5 0.4 0.0 41.4 Guarantees 17.5 17.5 Forward starting transactions, reverse repurchase and securities borrowing agreements 7 3.2 3.2 Total 61.3 0.5 0.4 0.0 0.0 62.2 31.12.19 USD billion Due within 1 month Due between 1 and 3 months Due between 3 and 12 months Due between 1 and 5 years Due after 5 years Total Financial liabilities recognized on balance sheet 1 Amounts due to banks 5.4 0.3 0.4 0.5 0.0 6.6 Payables from securities financing transactions 7.4 0.1 0.3 0.0 7.8 Cash collateral payables on derivative instruments 31.4 31.4 Customer deposits 423.0 16.1 7.3 2.5 0.0 448.9 Debt issued measured at amortized cost 2 4.5 5.3 30.5 46.3 36.0 122.7 Other financial liabilities measured at amortized cost 4.5 0.1 0.5 2.0 2.0 9.0 of which: lease liabilities 0.1 0.1 0.5 2.0 2.0 4.6 Total financial liabilities measured at amortized cost 476.1 22.0 38.9 51.3 38.1 626.4 Financial liabilities at fair value held for trading 3,4 30.6 30.6 Derivative financial instruments 3,5 120.9 120.9 Brokerage payables designated at fair value 37.2 37.2 Debt issued designated at fair value 6 21.3 17.4 9.5 12.7 7.6 68.5 Other financial liabilities designated at fair value 34.0 0.4 0.5 0.4 0.9 36.1 Total financial liabilities measured at fair value through profit or loss 244.0 17.8 9.9 13.1 8.5 293.3 Total 720.1 39.9 48.8 64.5 46.6 919.8 Guarantees, commitments and forward starting transactions Loan commitments 7 26.8 0.5 0.3 0.0 27.5 Guarantees 19.1 19.1 Forward starting transactions, reverse repurchase and securities borrowing agreements 7 1.6 0.0 1.7 Total 47.5 0.5 0.3 0.0 0.0 48.3 1 Except for financial liabilities at fair value held for trading and derivative financial instruments (see footnote 3), the amounts presented generally represent undiscounted cash flows of future interest and principal payments. 2 The time-bucket Due after 5 years includes perpetual loss-absorbing additional tier 1 capital instruments. 3 Carrying amount is fair value. Management believes that this best represents the cash flows that would have to be paid if these positions had to be settled or closed out. 4 Contractual maturities of financial liabilities at fair value held for trading are: USD 32.6 billion due within 1 month (2019: USD 30 billion), USD 1.0 billion due between 1 month and 1 year (2019: USD 0.6 billion) and USD 0 billion due between 1 and 5 years (2019: USD 0 billion). 5 Includes USD 32 million (2019: 0 million) related to fair values of derivative loan commitments and forward starting reverse repurchase agreements classified as derivatives, presented within “Due within 1 month”. The full contractual committed amount of USD 31.3 billion (2019: USD 26.6 billion) is presented in Note 10 under notional amounts. 6 Future interest payments on variable-rate liabilities are determined by reference to the applicable interest rate prevailing as of the reporting date. Future principal payments that are variable are determined by reference to the conditions existing at the reporting date. 7 Excludes derivative loan commitments and forward starting reverse repurchase agreements measured at fair value. The committed amounts of these instruments were previously presented in the former Note 34 (refer to the “Consolidated financial statements” section of the Annual Report 2019 for more information). Starting with this report, they are presented in Note 10 under notional amounts and prior-period information in this table has been amended to ensure comparability.
UBS AG
Disclosure Offsetting Financial Assets And Financial Liabilities [Line Items]
Disclosure of maturity analysis for financial liabilities [text block]	Maturity analysis of financial liabilities 31.12.20 USD billion Due within 1 month Due between 1 and 3 months Due between 3 and 12 months Due between 1 and 5 years Due after 5 years Total Financial liabilities recognized on balance sheet 1 Amounts due to banks 6.1 2.4 2.1 0.5 0.0 11.1 Payables from securities financing transactions 5.6 0.4 0.3 0.0 0.0 6.3 Cash collateral payables on derivative instruments 37.3 37.3 Customer deposits 514.0 7.8 3.5 2.8 0.2 528.2 Funding from UBS Group AG and its subsidiaries 2 0.1 0.3 6.2 29.1 24.8 60.5 Debt issued measured at amortized cost 2 8.8 7.8 38.2 24.5 8.9 88.2 Other financial liabilities measured at amortized cost 5.3 0.1 0.5 2.0 1.8 9.6 of which: lease liabilities 0.1 0.1 0.5 2.0 1.8 4.4 Total financial liabilities measured at amortized cost 577.2 18.9 50.7 58.8 35.8 741.3 Financial liabilities at fair value held for trading 3,4 33.6 33.6 Derivative financial instruments 3,5 161.1 161.1 Brokerage payables designated at fair value 38.7 38.7 Debt issued designated at fair value 6 21.9 16.8 7.1 9.2 6.0 61.0 Other financial liabilities designated at fair value 27.9 0.6 0.6 0.7 4.6 34.3 Total financial liabilities measured at fair value through profit or loss 283.2 17.4 7.7 9.8 10.6 328.8 Total 860.3 36.3 58.4 68.6 46.4 1,070.0 Guarantees, commitments and forward starting transactions Loan commitments 7 40.5 0.5 0.4 0.0 41.4 Guarantees 17.5 17.5 Forward starting transactions, reverse repurchase and securities borrowing agreements 7 3.2 3.2 Total 61.3 0.5 0.4 0.0 0.0 62.2 31.12.19 USD billion Due within 1 month Due between 1 and 3 months Due between 3 and 12 months Due between 1 and 5 years Due after 5 years Total Financial liabilities recognized on balance sheet 1 Amounts due to banks 5.4 0.3 0.4 0.5 0.0 6.6 Payables from securities financing transactions 7.4 0.1 0.3 0.0 7.8 Cash collateral payables on derivative instruments 31.4 31.4 Customer deposits 423.9 16.5 7.3 3.5 0.0 451.2 Funding from UBS Group AG and its subsidiaries 2 0.0 0.2 2.3 29.0 24.6 56.2 Debt issued measured at amortized cost 2 4.3 4.7 27.8 20.7 9.0 66.5 Other financial liabilities measured at amortized cost 5.2 0.1 0.5 1.9 2.0 9.6 of which: lease liabilities 0.1 0.1 0.5 1.9 2.0 4.5 Total financial liabilities measured at amortized cost 477.6 22.0 38.5 55.6 35.6 629.3 Financial liabilities at fair value held for trading 3,4 30.6 30.6 Derivative financial instruments 3,5 120.9 120.9 Brokerage payables designated at fair value 37.2 37.2 Debt issued designated at fair value 6 21.3 17.4 9.5 12.7 7.1 68.0 Other financial liabilities designated at fair value 34.0 0.4 0.5 0.4 0.9 36.1 Total financial liabilities measured at fair value through profit or loss 244.0 17.8 9.9 13.1 8.0 292.9 Total 721.6 39.9 48.4 68.7 43.6 922.2 Guarantees, commitments and forward starting transactions Loan commitments 7 26.8 0.5 0.3 0.0 27.5 Guarantees 19.1 19.1 Forward starting transactions, reverse repurchase and securities borrowing agreements 7 1.6 0.0 1.7 Total 47.5 0.5 0.3 0.0 0.0 48.3 1 Except for financial liabilities at fair value held for trading and derivative financial instruments (see footnote 3), the amounts presented generally represent undiscounted cash flows of future interest and principal payments. 2 The time-bucket Due after 5 years includes perpetual loss-absorbing additional tier 1 capital instruments. 3 Carrying amount is fair value. Management believes that this best represents the cash flows that would have to be paid if these positions had to be settled or closed out. 4 Contractual maturities of financial liabilities at fair value held for trading are: USD 32.6 billion due within 1 month (2019: USD 30 billion), USD 1.0 billion due between 1 month and 1 year (2019: USD 0.6 billion) and USD 0 billion due between 1 and 5 years (2019: USD 0 billion). 5 Includes USD 32 million (2019: 0 million) related to fair values of derivative loan commitments and forward starting reverse repurchase agreements classified as derivatives, presented within “Due within 1 month.” The full contractual committed amount of USD 31.3 billion (2019: USD 26.6 billion) is presented in Note 10 under notional amounts. 6 Future interest payments on variable-rate liabilities are determined by reference to the applicable interest rate prevailing as of the reporting date. Future principal payments that are variable are determined by reference to the conditions existing at the reporting date. 7 Excludes derivative loan commitments and forward starting reverse repurchase agreements measured at fair value. The committed amounts of these instruments were previously presented in the former Note 34 (refer to the “Consolidated financial statements” section of the Annual Report 2019 for more information). Starting with this report, they are presented in Note 10 under notional amounts and prior-period information in this table has been amended to ensure comparability.

Hedge accounting (Tables)

Hedge accounting (Tables)	12 Months Ended
Hedge accounting (Tables)	Dec. 31, 2020
Notes Hedge Accounting [Line Items]
Disclosure of fair value hedge accounting [text block]	All hedges: designated hedging instruments and hedge ineffectiveness As of or for the year ended 31.12.20 Carrying amount USD million Notional amount Derivative financial assets Derivative financial liabilities Changes in fair value of hedging instruments 1 Changes in fair value of hedged items 1 Hedge ineffectiveness recognized in Other net income from financial instruments measured at fair value through profit or loss Interest rate risk Fair value hedges 80,759 12 1,231 (1,247) (16) Cash flow hedges 72,732 18 2,213 (2,012) 201 Foreign exchange risk Fair value hedges 2,3 21,555 449 7 (1,735) 1,715 (20) Hedges of net investments in foreign operations 13,775 3 194 (937) 936 (2) As of or for the year ended 31.12.19 Carrying amount USD million Notional amount Derivative financial assets Derivative financial liabilities Changes in fair value of hedging instruments 1 Changes in fair value of hedged items 1 Hedge ineffectiveness recognized in Other net income from financial instruments measured at fair value through profit or loss Interest rate risk Fair value hedges 69,750 33 14 1,389 (1,376) 13 Cash flow hedges 69,443 16 1,639 (1,571) 68 Foreign exchange risk Hedges of net investments in foreign operations 11,992 9 171 (142) 134 (8) 1 Amounts used as the basis for recognizing hedge ineffectiveness for the period. 2 Fair value hedges of foreign exchange risk started on 1 January 2020. 3 The foreign currency basis spread of cross-currency swaps designated as hedging derivatives is excluded from the hedge accounting designation and accounted for as a cost of hedging with amounts deferred in Other comprehensive income within Equity. Fair value hedges: designated hedged items USD million 31.12.20 31.12.19 Interest rate risk FX risk 2 Interest rate risk Debt issued measured at amortized cost Carrying amount of designated debt issued 70,429 21,555 67,379 of which: accumulated amount of fair value hedge adjustment 2,401 1,099 Other financial assets measured at amortized cost – debt securities Carrying amount of designated debt securities 3,242 of which: accumulated amount of fair value hedge adjustment (38) Loans and advances to customers designated in fair value hedges of portfolio interest rate risk under IAS 39 Carrying amount of designated loans 10,374 4,494 of which: accumulated amount of fair value hedge adjustment on the portfolio that was subject to hedge accounting 1 100 117 of which: accumulated amount of fair value hedge adjustment subject to amortization attributable to the portion of the portfolio that ceased to be part of hedge accounting 1 111 172 1 Amounts presented within Other financial assets measured at amortized cost and Other financial liabilities measured at amortized cost. 2 Fair value hedges of foreign exchange risk started on 1 January 2020. Fair value hedges related to debt issued and debt securities: profile of the timing of the nominal amount of the hedging instrument 31.12.20 USD billion Due within 1 month Due between 1 and 3 months Due between 3 and 12 months Due between 1 and 5 years Due after 5 years Total Interest rate swaps 0 4 9 46 12 70 Cross-currency swaps 1 0 0 4 16 2 22 31.12.19 USD billion Due within 1 month Due between 1 and 3 months Due between 3 and 12 months Due between 1 and 5 years Due after 5 years Total Interest rate swaps 3 9 40 14 65 1 Fair value hedges of foreign exchange risk using cross-currency swaps started on 1 January 2020. Fair value hedges related to other financial assets measured at amortized cost – debt securities: Profile of the timing of the nominal amount of the hedging instrument 31.12.20 USD billion Due within 1 month Due between 1 and 3 months Due between 3 and 12 months Due between 1 and 5 years Due after 5 years Total Interest rate swaps
Disclosure of cash flow hedge accounting [text block]	Cash flow hedge reserve on a pre-tax basis USD million 31.12.20 31.12.19 Amounts related to hedge relationships for which hedge accounting continues to be applied 2,560 1,596 Amounts related to hedge relationships for which hedge accounting is no longer applied 296 (43) Total other comprehensive income recognized directly in equity related to cash flow hedges, on a pre-tax basis 2,856 1,553
Disclosure Of Information About Terms And Conditions Of Hedging Instruments And How They Affect Future Cash Flows Explanatory	Foreign currency translation reserve on a pre-tax basis USD million 31.12.20 31.12.19 Amounts related to hedge relationships for which hedge accounting continues to be applied (559) 386 Amounts related to hedge relationships for which hedge accounting is no longer applied 268 257 Total other comprehensive income recognized directly in equity related to hedging instruments designated as net investment hedges, on a pre-tax basis (291) 643
Disclosure Of Detailed Information About Hedging Instruments Explanatory	Hedging instruments referencing LIBOR 31.12.20 31.12.19 Carrying amount Carrying amount USD million Notional amount Derivative financial assets Derivative financial liabilities Notional amount Derivative financial assets Derivative financial liabilities Interest rate risk Fair value hedges 37,146 1 (12) 26,355 1 (14) Cash flow hedges 11,179 0 0 5,895 0 0
UBS AG
Notes Hedge Accounting [Line Items]
Disclosure of fair value hedge accounting [text block]	All hedges: designated hedging instruments and hedge ineffectiveness As of or for the year ended 31.12.20 USD million Notional amount Carrying amount Changes in fair value of hedging instruments 1 Changes in fair value of hedged items 1 Hedge ineffectiveness recognized in Other net income from financial instruments measured at fair value through profit or loss Derivative financial assets Derivative financial liabilities Interest rate risk Fair value hedges 80,759 12 1,231 (1,247) (16) Cash flow hedges 72,732 18 2,213 (2,012) 201 Foreign exchange risk Fair value hedges 2,3 21,555 449 7 (1,735) 1,715 (20) Hedges of net investments in foreign operations 13,634 3 193 (939) 938 (2) As of or for the year ended 31.12.19 USD million Notional amount Carrying amount Changes in fair value of hedging instruments 1 Changes in fair value of hedged items 1 Hedge ineffectiveness recognized in Other net income from financial instruments measured at fair value through profit or loss Derivative financial assets Derivative financial liabilities Interest rate risk Fair value hedges 69,750 33 14 1,389 (1,376) 13 Cash flow hedges 69,443 16 1,639 (1,571) 68 Foreign exchange risk Hedges of net investments in foreign operations 11,875 9 170 (153) 144 (8) 1 Amounts used as the basis for recognizing hedge ineffectiveness for the period. 2 Fair value hedges of foreign exchange risk started on 1 January 2020. 3 The foreign currency basis spread of cross-currency swaps designated as hedging derivatives is excluded from the hedge accounting designation and accounted for as a cost of hedging with amounts deferred in Other comprehensive income within Equity. Fair value hedges: designated hedged items USD million 31.12.20 31.12.19 Interest rate risk FX risk 2 Interest rate risk Debt issued measured at amortized cost Carrying amount of designated debt issued 24,247 10,889 26,120 of which: accumulated amount of fair value hedge adjustment 761 574 Funding from UBS Group AG and its subsidiaries Carrying amount of designated debt instruments 46,182 10,666 41,258 of which: accumulated amount of fair value hedge adjustment 1,640 525 Other financial assets measured at amortized cost – debt securities Carrying amount of designated debt securities 3,242 of which: accumulated amount of fair value hedge adjustment (38) Loans and advances to customers designated in fair value hedges of portfolio interest rate risk under IAS 39 Carrying amount of designated loans 10,374 4,494 of which: accumulated amount of fair value hedge adjustment on the portfolio that was subject to hedge accounting 1 100 117 of which: accumulated amount of fair value hedge adjustment subject to amortization attributable to the portion of the portfolio that ceased to be part of hedge accounting 1 111 172 1 Amounts presented within Other financial assets measured at amortized cost and Other financial liabilities measured at amortized cost. 2 Fair value hedges of foreign exchange risk started on 1 January 2020. Fair value hedges related to debt issued and debt securities: profile of the timing of the nominal amount of the hedging instrument 31.12.20 USD billion Due within 1 month Due between 1 and 3 months Due between 3 and 12 months Due between 1 and 5 years Due after 5 years Total Interest rate swaps 0 4 9 46 12 70 Cross-currency swaps 1 0 0 4 16 2 22 31.12.19 USD billion Due within 1 month Due between 1 and 3 months Due between 3 and 12 months Due between 1 and 5 years Due after 5 years Total Interest rate swaps 3 9 40 14 65 1 Fair value hedges of foreign exchange risk using cross-currency swaps started on 1 January 2020.
Disclosure of cash flow hedge accounting [text block]	Cash flow hedge reserve on a pre-tax basis USD million 31.12.20 31.12.19 Amounts related to hedge relationships for which hedge accounting continues to be applied 2,560 1,596 Amounts related to hedge relationships for which hedge accounting is no longer applied 296 (43) Total other comprehensive income recognized directly in equity related to cash flow hedges, on a pre-tax basis 2,856 1,554
Disclosure Of Information About Terms And Conditions Of Hedging Instruments And How They Affect Future Cash Flows Explanatory	Foreign currency translation reserve on a pre-tax basis USD million 31.12.20 31.12.19 Amounts related to hedge relationships for which hedge accounting continues to be applied (569) 377 Amounts related to hedge relationships for which hedge accounting is no longer applied 268 257 Total other comprehensive income recognized directly in equity related to hedging instruments designated as net investment hedges, on a pre-tax basis (302) 634
Disclosure Of Detailed Information About Hedging Instruments Explanatory	Hedging instruments referencing LIBOR 31.12.20 31.12.19 Carrying amount Carrying amount USD million Notional amount Derivative financial assets Derivative financial liabilities Notional amount Derivative financial assets Derivative financial liabilities Interest rate risk Fair value hedges 37,146 1 (12) 26,355 1 (14) Cash flow hedges 11,179 0 0 5,895 0 0

Post-employment benefit plans (

Post-employment benefit plans (Tables)	12 Months Ended
Post-employment benefit plans (Tables)	Dec. 31, 2020
Disclosure Of Post-employment Benefit Plans [Line Items]
Disclosure of expenses on post-employment benefit plans [text block]	Income statement – expenses related to post-employment benefit plans USD million 31.12.20 31.12.19 31.12.18 Net periodic expenses for defined benefit plans 502 461 188 of which: related to major plans 1 479 440 186 of which: Swiss pension plan 2 459 417 153 of which: UK pension plan 3 3 11 of which: US and German pension plans 18 21 22 of which: related to remaining plans and other expenses 3 23 21 2 Expenses for defined contribution plans 4 343 326 268 of which: UK plans 88 82 80 of which: US plan 190 173 127 of which: remaining plans 65 71 61 Total post-employment benefit plan expenses 5 845 787 457 1 Refer to Note 26a for more information. 2 Changes to the Swiss pension plan announced in 2018 resulted in a pre-tax gain of USD 241 million related to past service. Refer to Note 26a for more information on these changes. 3 Other expenses include differences between actual and estimated performance award accruals. 4 Refer to Note 26b for more information. 5 Refer to Note 6.
Disclosure of Other comprehensive income gains / (losses) on defined benefit plans [text block]	Other comprehensive income – gains / (losses) on defined benefit plans USD million 31.12.20 31.12.19 31.12.18 Major plans 1 (323) (135) (230) of which: Swiss pension plan (276) (22) (352) of which: UK pension plan (61) (78) 130 of which: US and German pension plans 14 (35) (8) Remaining plans (4) (10) 9 Gains / (losses) recognized in other comprehensive income, before tax (327) (146) (220) Tax (expense) / benefit relating to defined benefit plans recognized in other comprehensive income 109 (41) 276 Gains / (losses) recognized in other comprehensive income, net of tax 2 (218) (186) 56 1 Refer to Note 26a for more information. 2 Refer to the “Statement of comprehensive income.”
Disclosure of net defined benefit asset and liability [text block]	Balance sheet – net defined benefit asset USD million 31.12.20 31.12.19 Major plans 1 42 9 of which: Swiss pension plan 2 0 0 of which: UK pension plan 0 4 of which: US and German pension plans 42 5 Total net defined benefit asset 42 9 1 Refer to Note 26a for more information. 2 As of 31 December 2020 and 31 December 2019, the Swiss pension plan was in a surplus situation. No net defined benefit asset was recognized on the balance sheet due to the IFRS asset ceiling restriction. Refer to Note 26a for more information. Balance sheet – net defined benefit liability USD million 31.12.20 31.12.19 Major plans 1 599 527 of which: UK pension plan 13 0 of which: US and German pension plans 2 586 527 Remaining plans 123 107 Total net defined benefit liability 3 722 633 1 Refer to Note 26a for more information. 2 Of the total liability recognized as of 31 December 2020, USD 88 million related to US plans and USD 498 million related to German plans (31 December 2019: USD 111 million and USD 416 million, respectively). 3 Refer to Note 19c.
Disclosure Of Transactions Between Related Parties Explanatory	Related-party disclosure For the year ended USD million 31.12.20 31.12.19 31.12.18 Received by UBS Fees 34 34 35 Paid by UBS Rent 5 4 4 Dividends, capital repayments and interest 10 11 10
Disclosure of transaction volumes of UBS shares and UBS debt instruments [text block]	Transaction volumes – UBS shares and UBS debt instruments For the year ended 31.12.20 31.12.19 Financial instruments bought by pension funds UBS shares (in thousands of shares) 1,758 967 UBS debt instruments (par values, USD million) 28 2 Financial instruments sold by pension funds or matured UBS shares (in thousands of shares) 2,605 1,977 UBS debt instruments (par values, USD million) 6 8 UBS shares held by post-employment benefit plans 31.12.20 31.12.19 Number of shares (in thousands of shares) 14,854 15,701 Fair value (USD million) 210 198
Major plans
Disclosure Of Post-employment Benefit Plans [Line Items]
Disclosure Of Defined Benefit Plans Explanatory	Defined benefit plans USD million Swiss pension plan UK pension plan US and German pension plans Total 2020 2019 2020 2019 2020 2019 2020 2019 Defined benefit obligation at the beginning of the year 24,496 22,566 3,654 3,192 1,820 1,679 29,970 27,437 Current service cost 447 409 0 0 6 6 453 415 Interest expense 72 200 73 92 45 59 190 351 Plan participant contributions 259 240 0 0 0 0 259 240 Remeasurements 1,279 1,728 449 361 105 185 1,832 2,275 of which: actuarial (gains) / losses due to changes in demographic assumptions (164) (196) (14) (26) (34) 3 (212) (220) of which: actuarial (gains) / losses due to changes in financial assumptions 983 1,641 505 421 134 179 1,621 2,241 of which: experience (gains) / losses 1 460 284 (42) (34) 5 4 423 254 Past service cost related to plan amendments 0 0 3 0 0 0 3 0 Benefit payments (1,153) (1,046) (148) (135) (108) (102) (1,409) (1,283) Other movements (4) 0 0 0 0 0 (4) 0 Foreign currency translation 2,333 399 132 144 37 (8) 2,501 535 Defined benefit obligation at the end of the year 27,728 24,496 4,162 3,654 1,905 1,820 33,795 29,970 of which: amounts owed to active members 13,765 11,577 159 164 245 235 14,169 11,976 of which: amounts owed to deferred members 0 0 1,879 1,559 743 675 2,622 2,233 of which: amounts owed to retirees 13,963 12,918 2,124 1,931 917 911 17,004 15,760 Fair value of plan assets at the beginning of the year 28,219 25,839 3,658 3,032 1,299 1,168 33,176 30,039 Return on plan assets excluding interest income 1,818 2,059 388 284 118 150 2,324 2,492 Interest income 84 233 73 89 38 47 196 369 Employer contributions 729 452 46 242 17 38 792 732 Plan participant contributions 259 240 0 0 0 0 259 240 Benefit payments (1,153) (1,046) (148) (135) (108) (102) (1,409) (1,283) Administration expenses, taxes and premiums paid (13) (11) 0 0 (4) (2) (17) (13) Foreign currency translation 2,647 453 132 146 0 0 2,779 599 Fair value of plan assets at the end of the year 32,590 28,219 4,149 3,658 1,360 1,299 38,100 33,176 Asset ceiling effect at the beginning of the year 3,724 3,274 0 0 0 0 3,724 3,274 Interest expense on asset ceiling effect 12 30 0 0 0 0 12 30 Asset ceiling effect excluding interest expense and foreign currency translation on asset ceiling effect 814 353 0 0 0 0 814 353 Foreign currency translation 313 67 0 0 0 0 313 67 Asset ceiling effect at the end of the year 4,862 3,724 0 0 0 0 4,862 3,724 Net defined benefit asset / (liability) 0 0 (13) 4 (545) (521) (558) (518) Movement in the net asset / (liability) recognized on the balance sheet Net asset / (liability) recognized on the balance sheet at the beginning of the year 0 0 4 (160) (521) (511) (518) (671) Net periodic expenses recognized in net profit (459) (417) (3) (3) (18) (21) (479) (440) Gains / (losses) recognized in other comprehensive income (276) (22) (61) (78) 14 (35) (323) (135) Employer contributions 729 452 46 242 17 38 792 732 Other movements 4 0 0 0 0 0 4 0 Foreign currency translation 1 (13) 0 2 (37) 8 (35) (3) Net asset / (liability) recognized on the balance sheet at the end of the year 0 0 (13) 4 (545) (521) (558) (518) Funded and unfunded plans Defined benefit obligation from funded plans 27,728 24,496 4,162 3,654 1,319 1,319 33,209 29,469 Defined benefit obligation from unfunded plans 0 0 0 0 586 501 586 501 Plan assets 32,590 28,219 4,149 3,658 1,360 1,299 38,100 33,176 Surplus / (deficit) 4,862 3,724 (13) 4 (545) (521) 4,304 3,206 Asset ceiling effect 4,862 3,724 0 0 0 0 4,862 3,724 Net defined benefit asset / (liability) 0 0 (13) 4 (545) (521) (558) (518) Analysis of amounts recognized in net profit USD million Swiss pension plan UK pension plan US and German pension plans Total For the year ended 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Current service cost 447 409 0 0 6 6 453 415 Interest expense related to defined benefit obligation 72 200 73 92 45 59 190 351 Interest income related to plan assets (84) (233) (73) (89) (38) (47) (196) (369) Interest expense on asset ceiling effect 12 30 0 0 0 0 12 30 Administration expenses, taxes and premiums paid 13 11 0 0 4 2 17 13 Past service cost related to plan amendments 0 0 3 0 0 0 3 0 Net periodic expenses recognized in net profit 459 417 3 3 18 21 479 440 Analysis of amounts recognized in other comprehensive income (OCI) USD million Swiss pension plan UK pension plan US and German pension plans Total For the year ended 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Remeasurement of defined benefit obligation (1,279) (1,728) (449) (361) (105) (185) (1,832) (2,275) of which: change in discount rate assumption (777) (1,887) (504) (552) (141) (166) (1,421) (2,605) of which: change in rate of salary increase assumption (230) 3 0 0 0 0 (230) 3 of which: change in rate of pension increase assumption 0 0 (1) 132 1 (4) 0 128 of which: change in rate of interest credit on retirement savings assumption 26 243 0 0 24 18 50 261 of which: change in life expectancy 261 0 22 21 50 4 333 25 of which: change in other actuarial assumptions (99) 196 (8) 5 (34) (33) (142) 168 of which: experience gains / (losses) 1 (460) (284) 42 34 (5) (4) (423) (254) Return on plan assets excluding interest income 1,818 2,059 388 284 118 150 2,324 2,492 Asset ceiling effect excluding interest expense and foreign currency translation (814) (353) 0 0 0 0 (814) (353) Total gains / (losses) recognized in other comprehensive income, before tax (276) (22) (61) (78) 14 (35) (323) (135) 1 Experience (gains) / losses are a component of actuarial remeasurements of the defined benefit obligation that reflect the effects of differences between the previous actuarial assumptions and what has actually occurred.
Disclosure of maturity analysis of expected benefit payments [text block]	Swiss pension plan UK pension plan US and German pension plans 1 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Duration of the defined benefit obligation (in years) 15.7 14.9 19.0 20.2 10.2 10.1 Maturity analysis of benefits expected to be paid USD million Benefits expected to be paid within 12 months 1,293 1,232 114 93 122 121 Benefits expected to be paid between 1 and 3 years 2,630 2,483 232 209 235 228 Benefits expected to be paid between 3 and 6 years 3,839 3,670 406 384 346 346 Benefits expected to be paid between 6 and 11 years 6,166 5,761 744 748 532 548 Benefits expected to be paid between 11 and 16 years 5,646 5,070 758 807 413 455 Benefits expected to be paid in more than 16 years 18,884 15,517 3,206 3,913 541 721 1 The duration of the defined benefit obligation represents a weighted average across US and German plans.
Disclosure of actuarial assumptions [text block]	Significant actuarial assumptions Swiss pension plan UK pension plan US and German pension plans 1 In % 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Discount rate 0.10 0.29 1.42 2.07 1.62 2.58 Rate of salary increase 2.00 1.50 0.00 0.00 2.25 2.37 Rate of pension increase 0.00 0.00 2.89 2.92 1.70 1.80 Rate of interest credit on retirement savings 0.60 0.49 0.00 0.00 1.12 2.57 1 Represents weighted average assumptions across US and German plans.
Disclosure Of Sensitivity Analysis For Actuarial Assumptions Explanatory	Sensitivity analysis of significant actuarial assumptions 1 Increase / (decrease) in defined benefit obligation Swiss pension plan UK pension plan US and German pension plans USD million 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Discount rate Increase by 50 basis points (1,793) (1,505) (370) (346) (91) (86) Decrease by 50 basis points 2,048 1,710 423 395 99 93 Rate of salary increase Increase by 50 basis points 117 76 – 2 – 2 1 1 Decrease by 50 basis points (111) (73) – 2 – 2 (1) (1) Rate of pension increase Increase by 50 basis points 1,413 1,221 358 331 8 7 Decrease by 50 basis points – 3 – 3 (316) (299) (7) (7) Rate of interest credit on retirement savings Increase by 50 basis points 236 175 – 4 – 4 9 9 Decrease by 50 basis points (188) 5 (102) – 4 – 4 (8) (9) Life expectancy Increase in longevity by one additional year 1,061 886 182 154 60 51 1 The sensitivity analyses are based on a change in one assumption while holding all other assumptions constant, so that interdependencies between the assumptions are excluded. 2 As the plan is closed for future service, a change in assumption is not applicable. 3 As the assumed rate of pension increase was 0% as of 31 December 2020 and as of 31 December 2019, a downward change in assumption is not applicable. 4 As the UK plan does not provide interest credits on retirement savings, a change in assumption is not applicable. 5 As of 31 December 2020, 20% of retirement savings were subject to a legal minimum rate of 1.00%.
Disclosure of composition and fair value of plan assets [text block]	Composition and fair value of plan assets Swiss pension plan 31.12.20 31.12.19 Fair value Plan asset allocation % Fair value Plan asset allocation % USD million Quoted in an active market Other Total Quoted in an active market Other Total Cash and cash equivalents 219 0 219 1 159 0 159 1 Real estate / property Domestic 0 3,582 3,582 11 0 3,050 3,050 11 Foreign 0 331 331 1 0 160 160 1 Investment funds Equity Domestic 826 0 826 3 701 0 701 2 Foreign 6,284 1,958 8,242 25 6,091 1,653 7,743 27 Bonds 1 Domestic, AAA to BBB– 3,721 0 3,721 11 3,238 0 3,238 11 Foreign, AAA to BBB– 6,146 0 6,146 19 5,880 0 5,880 21 Foreign, below BBB– 1,303 0 1,303 4 999 0 999 4 Other 3,363 3,722 7,085 22 1,604 3,956 5,560 20 Other investments 663 473 1,136 3 535 194 729 3 Total fair value of plan assets 22,525 10,065 32,590 100 19,206 9,014 28,219 100 31.12.20 31.12.19 Total fair value of plan assets 32,590 28,219 of which: 2 Bank accounts at UBS 231 159 UBS debt instruments 34 7 UBS shares 24 21 Securities lent to UBS 3 1,416 1,328 Property occupied by UBS 96 88 Derivative financial instruments, counterparty UBS 3 149 10 1 The bond credit ratings are primarily based on Standard & Poor’s credit ratings. Ratings AAA to BBB– and below BBB– represent investment grade and non-investment grade ratings, respectively. In cases where credit ratings from other rating agencies were used, these were converted to the equivalent rating in Standard & Poor’s rating classification. 2 Bank accounts at UBS encompass accounts in the name of the Swiss pension fund. The other positions disclosed in the table encompass both direct investments in UBS instruments and indirect investments, i.e., those made through funds that the pension fund invests in. 3 Securities lent to UBS and derivative financial instruments are presented gross of any collateral. Securities lent to UBS were fully covered by collateral as of 31 December 2020 and 31 December 2019. Net of collateral, derivative financial instruments amounted to negative USD 17 million as of 31 December 2020 (31 December 2019: positive USD 6 million). Composition and fair value of plan assets (continued) UK pension plan 31.12.20 31.12.19 Fair value Plan asset allocation % Fair value Plan asset allocation % USD million Quoted in an active market Other Total Quoted in an active market Other Total Cash and cash equivalents 195 0 195 5 141 0 141 4 Bonds 1 Domestic, AAA to BBB– 2,150 0 2,150 52 1,810 0 1,810 49 Foreign, AAA to BBB– 53 0 53 1 0 0 0 0 Investment funds Equity Domestic 34 3 37 1 33 0 33 1 Foreign 1,077 0 1,077 26 916 0 916 25 Bonds 1 Domestic, AAA to BBB– 919 131 1,050 25 610 117 727 20 Domestic, below BBB– 47 0 47 1 22 0 22 1 Foreign, AAA to BBB– 149 0 149 4 310 0 310 8 Foreign, below BBB– 110 0 110 3 108 0 108 3 Real estate Domestic 98 16 114 3 103 18 122 3 Foreign 0 37 37 1 0 19 19 1 Other (86) 0 (86) (2) 0 0 0 0 Insurance contracts 0 8 8 0 0 7 7 0 Derivatives (3) 0 (3) 0 3 0 3 0 Asset-backed securities 0 6 6 0 0 6 6 0 Other investments 2 (803) 9 (794) (19) (572) 7 (565) (15) Total fair value of plan assets 3,940 209 4,149 100 3,483 175 3,658 100 1 The bond credit ratings are primarily based on Standard & Poor’s credit ratings. Ratings AAA to BBB– and below BBB– represent investment grade and non-investment grade ratings, respectively. In cases where credit ratings from other rating agencies were used, these were converted to the equivalent rating in Standard & Poor’s rating classification. 2 Mainly relates to repurchase arrangements on UK treasury bonds. US pension plans 31.12.20 31.12.19 Fair value Plan asset allocation % Fair value Plan asset allocation % USD million Quoted in an active market Other Total Quoted in an active market Other Total Cash and cash equivalents 38 0 38 3 27 0 27 2 Bonds 1 Domestic, AAA to BBB– 490 0 490 36 475 0 475 37 Domestic, below BBB– 7 0 7 0 2 0 2 0 Foreign, AAA to BBB– 99 0 99 7 99 0 99 8 Foreign, below BBB– 1 0 1 0 3 0 3 0 Investment funds Equity Domestic 210 0 210 15 208 0 208 16 Foreign 169 0 169 12 161 0 161 12 Bonds 1 Domestic, AAA to BBB– 195 0 195 14 176 0 176 14 Domestic, below BBB– 34 0 34 2 28 0 28 2 Foreign, AAA to BBB– 19 0 19 1 17 0 17 1 Foreign, below BBB– 3 0 3 0 3 0 3 0 Real estate Domestic 0 14 14 1 0 13 13 1 Other 79 0 79 6 69 0 69 5 Insurance contracts 0 1 1 0 0 18 18 1 Total fair value of plan assets 1,345 15 1,360 100 1,268 31 1,299 100 1 The bond credit ratings are primarily based on Standard & Poor’s credit ratings. Ratings AAA to BBB– and below BBB– represent investment grade and non-investment grade ratings, respectively. In cases where credit ratings from other rating agencies were used, these were converted to the equivalent rating in Standard & Poor’s rating classification.
Major plans \| Actuarial Assumption Of Mortality Rates [Member]
Disclosure Of Post-employment Benefit Plans [Line Items]
Disclosure of actuarial assumptions [text block]	Mortality tables and life expectancies for major plans Life expectancy at age 65 for a male member currently aged 65 aged 45 Country Mortality table 31.12.20 31.12.19 31.12.20 31.12.19 Switzerland BVG 2020 G with CMI 2019 projections 1 21.7 21.6 23.2 23.1 UK S3PA with CMI 2019 projections 2 23.4 23.3 24.6 24.5 USA Pri-2012 with MP-2020 projection scale 3 21.8 22.8 23.2 24.3 Germany Dr. K. Heubeck 2018 G 20.8 20.7 23.6 23.5 Life expectancy at age 65 for a female member currently aged 65 aged 45 Country Mortality table 31.12.20 31.12.19 31.12.20 31.12.19 Switzerland BVG 2020 G with CMI 2019 projections 1 23.4 23.6 24.9 25.1 UK S3PA with CMI 2019 projections 2 24.9 25.1 26.3 26.4 USA Pri-2012 with MP-2020 projection scale 3 23.2 24.4 24.5 25.9 Germany Dr. K. Heubeck 2018 G 24.3 24.2 26.5 26.4 1 In 2019, BVG 2015 G with CMI 2016 projections was used. 2 In 2019, S2PA with CMI 2018 projections was used. 3 In 2019, RP-2014 WCHA with MP-2019 projection scale was used.
UBS AG
Disclosure Of Post-employment Benefit Plans [Line Items]
Disclosure of expenses on post-employment benefit plans [text block]	Income statement – expenses related to post-employment benefit plans USD million 31.12.20 31.12.19 31.12.18 Net periodic expenses for defined benefit plans 306 291 140 of which: related to major plans 1 289 271 141 of which: Swiss pension plan 2 269 248 108 of which: UK pension plan 3 3 11 of which: US and German pension plans 18 21 22 of which: related to remaining plans and other expenses 3 17 19 (1) Expenses for defined contribution plans 4 291 278 223 of which: UK plans 36 34 35 of which: US plan 190 173 127 of which: remaining plans 65 71 61 Total post-employment benefit plan expenses 5 597 569 363 1 Refer to Note 26a for more information. 2 Changes to the Swiss pension plan announced in 2018 resulted in a pre-tax gain of USD 132 million related to past service. Refer to Note 26a for more information on these changes. 3 Other expenses include differences between actual and estimated performance award accruals. 4 Refer to Note 26b for more information. 5 Refer to Note 6.
Disclosure of Other comprehensive income gains / (losses) on defined benefit plans [text block]	Other comprehensive income – gains / (losses) on defined benefit plans USD million 31.12.20 31.12.19 31.12.18 Major plans 1 (219) (128) (79) of which: Swiss pension plan (172) (15) (201) of which: UK pension plan (61) (78) 130 of which: US and German pension plans 14 (35) (8) Remaining plans (3) (1) 9 Gains / (losses) recognized in other comprehensive income, before tax (222) (129) (70) Tax (expense) / benefit relating to defined benefit plans recognized in other comprehensive income 88 (41) 245 Gains / (losses) recognized in other comprehensive income, net of tax 2 (134) (170) 175 1 Refer to Note 26a for more information. 2 Refer to the “Statement of comprehensive income.”
Disclosure of net defined benefit asset and liability [text block]	Balance sheet – net defined benefit asset USD million 31.12.20 31.12.19 Major plans 1 42 9 of which: Swiss pension plan 2 0 0 of which: UK pension plan 0 4 of which: US and German pension plans 42 5 Total net defined benefit asset 42 9 1 Refer to Note 26a for more information. 2 As of 31 December 2020 and 31 December 2019, the Swiss pension plan was in a surplus situation. No net defined benefit asset was recognized on the balance sheet due to the IFRS asset ceiling restriction. Refer to Note 26a for more information. Balance sheet – net defined benefit liability USD million 31.12.20 31.12.19 Major plans 1 599 527 of which: UK pension plan 13 0 of which: US and German pension plans 2 586 527 Remaining plans 112 103 Total net defined benefit liability 3 711 629 1 Refer to Note 26a for more information. 2 Of the total liability recognized as of 31 December 2020, USD 88 million related to US plans and USD 498 million related to German plans (31 December 2019: USD 111 million and USD 416 million, respectively). 3 Refer to Note 19c.
Disclosure Of Transactions Between Related Parties Explanatory	Related-party disclosure For the year ended USD million 31.12.20 31.12.19 31.12.18 Received by UBS AG Fees 19 19 22 Paid by UBS AG Rent 3 2 3 Dividends, capital repayments and interest 10 10 10
Disclosure of transaction volumes of UBS shares and UBS debt instruments [text block]	Transaction volumes – UBS Group AG shares and UBS AG debt instruments For the year ended 31.12.20 31.12.19 Financial instruments bought by pension funds UBS Group AG shares (in thousands of shares) 1,677 929 UBS AG debt instruments (par values, USD million) 16 1 Financial instruments sold by pension funds or matured UBS Group AG shares (in thousands of shares) 2,556 1,778 UBS AG debt instruments (par values, USD million) 4 5 UBS Group AG shares held by post-employment benefit plans 31.12.20 31.12.19 Number of shares (in thousands of shares) 14,112 14,991 Fair value (USD million) 199 189
UBS AG \| Major plans
Disclosure Of Post-employment Benefit Plans [Line Items]
Disclosure Of Defined Benefit Plans Explanatory	Defined benefit plans USD million Swiss pension plan UK pension plan US and German pension plans Total 2020 2019 2020 2019 2020 2019 2020 2019 Defined benefit obligation at the beginning of the year 13,809 13,774 3,654 3,192 1,820 1,679 19,283 18,645 Current service cost 262 243 0 0 6 6 268 249 Interest expense 40 122 73 92 45 59 159 273 Plan participant contributions 159 149 0 0 0 0 159 149 Remeasurements 677 (61) 449 361 105 185 1,231 485 of which: actuarial (gains) / losses due to changes in demographic assumptions (53) (125) (14) (26) (34) 3 (101) (148) of which: actuarial (gains) / losses due to changes in financial assumptions 565 1,006 505 421 134 179 1,204 1,605 of which: experience (gains) / losses 1,2 165 (942) (42) (34) 5 4 127 (972) Past service cost related to plan amendments 0 0 3 0 0 0 3 0 Benefit payments (641) (624) (148) (135) (108) (102) (898) (860) Other movements (4) 0 0 0 0 0 (4) 0 Foreign currency translation 1,317 206 132 144 37 (8) 1,486 342 Defined benefit obligation at the end of the year 15,619 13,809 4,162 3,654 1,905 1,820 21,686 19,283 of which: amounts owed to active members 8,290 7,073 159 164 245 235 8,694 7,472 of which: amounts owed to deferred members 0 0 1,879 1,559 743 675 2,622 2,233 of which: amounts owed to retirees 7,329 6,735 2,124 1,931 917 911 10,370 9,577 Fair value of plan assets at the beginning of the year 15,908 15,772 3,658 3,032 1,299 1,168 20,864 19,972 Return on plan assets excluding interest income 2 962 (30) 388 284 118 150 1,469 403 Interest income 48 142 73 89 38 47 159 278 Employer contributions 436 271 46 242 17 38 499 550 Plan participant contributions 159 149 0 0 0 0 159 149 Benefit payments (641) (624) (148) (135) (108) (102) (898) (860) Administration expenses, taxes and premiums paid (8) (7) 0 0 (4) (2) (11) (9) Foreign currency translation 1,495 235 132 146 0 0 1,626 381 Fair value of plan assets at the end of the year 18,358 15,908 4,149 3,658 1,360 1,299 23,867 20,864 Asset ceiling effect at the beginning of the year 2,099 1,998 0 0 0 0 2,099 1,998 Interest expense on asset ceiling effect 7 18 0 0 0 0 7 18 Asset ceiling effect excluding interest expense and foreign currency translation on asset ceiling effect 457 46 0 0 0 0 457 46 Foreign currency translation 176 36 0 0 0 0 176 36 Asset ceiling effect at the end of the year 2,739 2,099 0 0 0 0 2,739 2,099 Net defined benefit asset / (liability) 0 0 (13) 4 (545) (521) (558) (518) Movement in the net asset / (liability) recognized on the balance sheet Net asset / (liability) recognized on the balance sheet at the beginning of the year 0 0 4 (160) (521) (511) (518) (671) Net periodic expenses recognized in net profit (269) (248) (3) (3) (18) (21) (289) (271) Gains / (losses) recognized in other comprehensive income (172) (15) (61) (78) 14 (35) (219) (128) Employer contributions 436 271 46 242 17 38 499 550 Other movements 4 0 0 0 0 0 4 0 Foreign currency translation 1 (8) 0 2 (37) 8 (35) 2 Net asset / (liability) recognized on the balance sheet at the end of the year 0 0 (13) 4 (545) (521) (558) (518) Funded and unfunded plans Defined benefit obligation from funded plans 15,619 13,809 4,162 3,654 1,319 1,319 21,100 18,782 Defined benefit obligation from unfunded plans 0 0 0 0 586 501 586 501 Plan assets 18,358 15,908 4,149 3,658 1,360 1,299 23,867 20,864 Surplus / (deficit) 2,739 2,099 (13) 4 (545) (521) 2,181 1,582 Asset ceiling effect 2,739 2,099 0 0 0 0 2,739 2,099 Net defined benefit asset / (liability) 0 0 (13) 4 (545) (521) (558) (518) 1 Experience (gains) / losses are a component of actuarial remeasurements of the defined benefit obligation that reflect the effects of differences between the previous actuarial assumptions and what has actually occurred. 2 Includes the effect from employees transferring between UBS AG and UBS Business Solutions during the period. Analysis of amounts recognized in net profit USD million Swiss pension plan UK pension plan US and German pension plans Total For the year ended 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Current service cost 262 243 0 0 6 6 268 249 Interest expense related to defined benefit obligation 40 122 73 92 45 59 159 273 Interest income related to plan assets (48) (142) (73) (89) (38) (47) (159) (278) Interest expense on asset ceiling effect 7 18 0 0 0 0 7 18 Administration expenses, taxes and premiums paid 8 7 0 0 4 2 11 9 Past service cost related to plan amendments 0 0 3 0 0 0 3 0 Net periodic expenses recognized in net profit 269 248 3 3 18 21 289 271 Analysis of amounts recognized in other comprehensive income (OCI) USD million Swiss pension plan UK pension plan US and German pension plans Total For the year ended 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Remeasurement of defined benefit obligation (677) 61 (449) (361) (105) (185) (1,231) (485) of which: change in discount rate assumption (447) (1,156) (504) (552) (141) (166) (1,092) (1,874) of which: change in rate of salary increase assumption (132) 2 0 0 0 0 (132) 2 of which: change in rate of pension increase assumption 0 0 (1) 132 1 (4) 0 128 of which: change in rate of interest credit on retirement savings assumption 15 149 0 0 24 18 39 167 of which: change in life expectancy 84 0 22 21 50 4 156 25 of which: change in other actuarial assumptions (33) 125 (8) 5 (34) (33) (75) 97 of which: experience gains / (losses) 1,2 (165) 942 42 34 (5) (4) (127) 972 Return on plan assets excluding interest income 962 (30) 388 284 118 150 1,469 403 Asset ceiling effect excluding interest expense and foreign currency translation (457) (46) 0 0 0 0 (457) (46) Total gains / (losses) recognized in other comprehensive income, before tax (172) (15) (61) (78) 14 (35) (219) (128) 1 Experience (gains) / losses are a component of actuarial remeasurements of the defined benefit obligation that reflect the effects of differences between the previous actuarial assumptions and what has actually occurred. 2 Includes the effect from employees transferring between UBS AG and UBS Business Solutions during the period.
Disclosure of maturity analysis of expected benefit payments [text block]	Swiss pension plan UK pension plan US and German pension plans 1 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Duration of the defined benefit obligation (in years) 16.2 15.2 19.0 20.2 10.2 10.1 Maturity analysis of benefits expected to be paid USD million Benefits expected to be paid within 12 months 710 687 114 93 122 121 Benefits expected to be paid between 1 and 3 years 1,442 1,383 232 209 235 228 Benefits expected to be paid between 3 and 6 years 2,100 2,048 406 384 346 346 Benefits expected to be paid between 6 and 11 years 3,408 3,232 744 748 532 548 Benefits expected to be paid between 11 and 16 years 3,184 2,899 758 807 413 455 Benefits expected to be paid in more than 16 years 11,186 9,136 3,206 3,913 541 721 1 The duration of the defined benefit obligation represents a weighted average across US and German plans.
Disclosure of actuarial assumptions [text block]	Significant actuarial assumptions Swiss pension plan UK pension plan US and German pension plans 1 In % 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Discount rate 0.10 0.29 1.42 2.07 1.62 2.58 Rate of salary increase 2.00 1.50 0.00 0.00 2.25 2.37 Rate of pension increase 0.00 0.00 2.89 2.92 1.70 1.80 Rate of interest credit on retirement savings 0.60 0.49 0.00 0.00 1.12 2.57 1 Represents weighted average assumptions across US and German plans.
Disclosure Of Sensitivity Analysis For Actuarial Assumptions Explanatory	Sensitivity analysis of significant actuarial assumptions 1 Increase / (decrease) in defined benefit obligation Swiss pension plan UK pension plan US and German pension plans USD million 31.12.20 31.12.19 31.12.20 31.12.19 31.12.20 31.12.19 Discount rate Increase by 50 basis points (1,030) (853) (370) (346) (91) (86) Decrease by 50 basis points 1,181 972 423 395 99 93 Rate of salary increase Increase by 50 basis points 74 49 – 2 – 2 1 1 Decrease by 50 basis points (71) (47) – 2 – 2 (1) (1) Rate of pension increase Increase by 50 basis points 793 673 358 331 8 7 Decrease by 50 basis points – 3 – 3 (316) (299) (7) (7) Rate of interest credit on retirement savings Increase by 50 basis points 142 107 – 4 – 4 9 9 Decrease by 50 basis points (113) 5 (62) – 4 – 4 (8) (9) Life expectancy Increase in longevity by one additional year 566 459 182 154 60 51 1 The sensitivity analyses are based on a change in one assumption while holding all other assumptions constant, so that interdependencies between the assumptions are excluded. 2 As the plan is closed for future service, a change in assumption is not applicable. 3 As the assumed rate of pension increase was 0% as of 31 December 2020 and as of 31 December 2019, a downward change in assumption is not applicable. 4 As the UK plan does not provide interest credits on retirement savings, a change in assumption is not applicable. 5 As of 31 December 2020, 17.7% of retirement savings were subject to a legal minimum rate of 1.00%.
Disclosure of composition and fair value of plan assets [text block]	Composition and fair value of plan assets Swiss pension plan 31.12.20 31.12.19 Fair value Plan asset allocation % Fair value Plan asset allocation % USD million Quoted in an active market Other Total Quoted in an active market Other Total Cash and cash equivalents 123 0 123 1 90 0 90 1 Real estate / property Domestic 0 2,018 2,018 11 0 1,720 1,720 11 Foreign 0 186 186 1 0 90 90 1 Investment funds Equity Domestic 465 0 465 3 395 0 395 2 Foreign 3,540 1,103 4,642 25 3,433 932 4,365 27 Bonds 1 Domestic, AAA to BBB– 2,096 0 2,096 11 1,825 0 1,825 11 Foreign, AAA to BBB– 3,462 0 3,462 19 3,315 0 3,315 21 Foreign, below BBB– 734 0 734 4 563 0 563 4 Other 1,894 2,097 3,991 22 904 2,230 3,134 20 Other investments 373 266 640 3 301 109 411 3 Total fair value of plan assets 12,688 5,670 18,358 100 10,827 5,081 15,908 100 31.12.20 31.12.19 Total fair value of plan assets 18,358 15,908 of which: 2 Bank accounts at UBS AG 130 90 UBS AG debt instruments 19 4 UBS Group AG shares 13 12 Securities lent to UBS AG 3 796 748 Property occupied by UBS AG 54 50 Derivative financial instruments, counterparty UBS AG 3 84 6 1 The bond credit ratings are primarily based on Standard & Poor’s credit ratings. Ratings AAA to BBB– and below BBB– represent investment grade and non-investment grade ratings, respectively. In cases where credit ratings from other rating agencies were used, these were converted to the equivalent rating in Standard & Poor’s rating classification. 2 Bank accounts at UBS AG encompass accounts in the name of the Swiss pension fund. The other positions disclosed in the table encompass both direct investments in UBS AG instruments and UBS Group AG shares and indirect investments, i.e., those made through funds that the pension fund invests in. 3 Securities lent to UBS AG and derivative financial instruments are presented gross of any collateral. Securities lent to UBS AG were fully covered by collateral as of 31 December 2020 and 31 December 2019. Net of collateral, derivative financial instruments amounted to negative USD 9 million as of 31 December 2020 (31 December 2019: positive USD 3 million). Composition and fair value of plan assets (continued) UK pension plan 31.12.20 31.12.19 Fair value Plan asset allocation % Fair value Plan asset allocation % USD million Quoted in an active market Other Total Quoted in an active market Other Total Cash and cash equivalents 195 0 195 5 141 0 141 4 Bonds 1 Domestic, AAA to BBB– 2,150 0 2,150 52 1,810 0 1,810 49 Foreign, AAA to BBB– 53 0 53 1 0 0 0 0 Investment funds Equity Domestic 34 3 37 1 33 0 33 1 Foreign 1,077 0 1,077 26 916 0 916 25 Bonds 1 Domestic, AAA to BBB– 919 131 1,050 25 610 117 727 20 Domestic, below BBB– 47 0 47 1 22 0 22 1 Foreign, AAA to BBB– 149 0 149 4 310 0 310 8 Foreign, below BBB– 110 0 110 3 108 0 108 3 Real estate Domestic 98 16 114 3 103 18 122 3 Foreign 0 37 37 1 0 19 19 1 Other (86) 0 (86) (2) 0 0 0 0 Insurance contracts 0 8 8 0 0 7 7 0 Derivatives (3) 0 (3) 0 3 0 3 0 Asset-backed securities 0 6 6 0 0 6 6 0 Other investments 2 (803) 9 (794) (19) (572) 7 (565) (15) Total fair value of plan assets 3,940 209 4,149 100 3,483 175 3,658 100 1 The bond credit ratings are primarily based on Standard & Poor’s credit ratings. Ratings AAA to BBB– and below BBB– represent investment grade and non-investment grade ratings, respectively. In cases where credit ratings from other rating agencies were used, these were converted to the equivalent rating in Standard & Poor’s rating classification. 2 Mainly relates to repurchase arrangements on UK treasury bonds. Composition and fair value of plan assets (continued) US pension plans 31.12.20 31.12.19 Fair value Plan asset allocation % Fair value Plan asset allocation % USD million Quoted in an active market Other Total Quoted in an active market Other Total Cash and cash equivalents 38 0 38 3 27 0 27 2 Bonds 1 Domestic, AAA to BBB– 490 0 490 36 475 0 475 37 Domestic, below BBB– 7 0 7 0 2 0 2 0 Foreign, AAA to BBB– 99 0 99 7 99 0 99 8 Foreign, below BBB– 1 0 1 0 3 0 3 0 Investment funds Equity Domestic 210 0 210 15 208 0 208 16 Foreign 169 0 169 12 161 0 161 12 Bonds 1 Domestic, AAA to BBB– 195 0 195 14 176 0 176 14 Domestic, below BBB– 34 0 34 2 28 0 28 2 Foreign, AAA to BBB– 19 0 19 1 17 0 17 1 Foreign, below BBB– 3 0 3 0 3 0 3 0 Real estate Domestic 0 14 14 1 0 13 13 1 Other 79 0 79 6 69 0 69 5 Insurance contracts 0 1 1 0 0 18 18 1 Total fair value of plan assets 1,345 15 1,360 100 1,268 31 1,299 100 1 The bond credit ratings are primarily based on Standard & Poor’s credit ratings. Ratings AAA to BBB– and below BBB– represent investment grade and non-investment grade ratings, respectively. In cases where credit ratings from other rating agencies were used, these were converted to the equivalent rating in Standard & Poor’s rating classification.
UBS AG \| Major plans \| Actuarial Assumption Of Mortality Rates [Member]
Disclosure Of Post-employment Benefit Plans [Line Items]
Disclosure of actuarial assumptions [text block]	Mortality tables and life expectancies for major plans Life expectancy at age 65 for a male member currently aged 65 aged 45 Country Mortality table 31.12.20 31.12.19 31.12.20 31.12.19 Switzerland BVG 2020 G with CMI 2019 projections 1 21.7 21.6 23.2 23.1 UK S3PA with CMI 2019 projections 2 23.4 23.3 24.6 24.5 USA Pri-2012 with MP-2020 projection scale 3 21.8 22.8 23.2 24.3 Germany Dr. K. Heubeck 2018 G 20.8 20.7 23.6 23.5 Life expectancy at age 65 for a female member currently aged 65 aged 45 Country Mortality table 31.12.20 31.12.19 31.12.20 31.12.19 Switzerland BVG 2020 G with CMI 2019 projections 1 23.4 23.6 24.9 25.1 UK S3PA with CMI 2019 projections 2 24.9 25.1 26.3 26.4 USA Pri-2012 with MP-2020 projection scale 3 23.2 24.4 24.5 25.9 Germany Dr. K. Heubeck 2018 G 24.3 24.2 26.5 26.4 1 In 2019, BVG 2015 G with CMI 2016 projections was used. 2 In 2019, S2PA with CMI 2018 projections was used. 3 In 2019, RP-2014 WCHA with MP-2019 projection scale was used.

Employee benefits_ variable c_2

Employee benefits: variable compensation (Tables)	12 Months Ended
Employee benefits: variable compensation (Tables)	Dec. 31, 2020
Disclosure Of Equity Participation And Other Compensation Plans [Line Items]
Disclosure of compensation-related personnel expenses [text block]	Variable compensation including financial advisor variable compensation Expenses recognized in 2020 Expenses deferred to 2021 and later 1 USD million Related to the 2020 performance year Related to prior performance years Total Related to the 2020 performance year Related to prior performance years Total Non-deferred cash 2,167 (26) 2,141 0 0 0 Deferred compensation awards 341 727 1,068 756 288 1,044 of which: Equity Ownership Plan 137 327 463 306 69 376 of which: Deferred Contingent Capital Plan 112 351 463 280 196 476 of which: Long-Term Incentive Plan 42 11 54 50 10 61 of which: Asset Management EOP 49 39 88 120 12 132 Variable compensation – performance awards 2,508 701 3,209 756 288 1,044 Variable compensation – other 2 126 94 220 181 192 374 Total variable compensation excluding financial advisor variable compensation 2,634 795 3,429 938 480 1,418 Financial advisor variable compensation 3,356 233 3,589 350 602 952 of which: non-deferred cash 3,154 0 3,154 0 0 0 of which: deferred share-based awards 69 50 119 79 135 214 of which: deferred cash-based awards 133 183 316 271 467 738 Compensation commitments with recruited financial advisors 3 22 480 502 473 1,682 2,155 Total FA variable compensation 3,378 713 4,091 822 2,284 3,106 Total variable compensation including FA variable compensation 6,012 1,508 7,520 4 1,760 2,764 4,524 1 Estimate as of 31 December 2020. Actual amounts to be expensed in future periods may vary, e.g., due to forfeiture of awards. 2 Comprised of replacement payments, forfeiture credits, severance payments, retention plan payments and interest expense related to the Deferred Contingent Capital Plan. 3 Reflects expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements. Amounts reflected as deferred expenses represent the maximum deferred exposure as of the balance sheet date. 4 Includes USD 686 million in expenses related to share-based compensation (performance awards: USD 517 million; other variable compensation: USD 50 million; financial advisor compensation: USD 119 million). A further USD 100 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 4 million related to role-based allowances; social security: USD 54 million; other personnel expenses: USD 42 million related to the Equity Plus Plan). Total personnel expense related to share-based equity-settled compensation excluding social security was USD 691 million. Variable compensation including financial advisor variable compensation (continued) Expenses recognized in 2019 Expenses deferred to 2020 and later 1 USD million Related to the 2019 performance year Related to prior performance years Total Related to the 2019 performance year Related to prior performance years Total Non-deferred cash 1,894 (26) 1,868 0 0 0 Deferred compensation awards 299 588 887 429 608 1,036 of which: Equity Ownership Plan 122 300 422 205 219 424 of which: Deferred Contingent Capital Plan 113 262 375 173 365 538 of which: Long-Term Incentive Plan 39 0 39 25 0 25 of which: Asset Management EOP 25 26 51 26 23 49 Variable compensation – performance awards 2,193 562 2,755 429 608 1,036 Variable compensation – other 2 159 88 246 117 232 349 Total variable compensation excluding financial advisor variable compensation 2,352 650 3,001 545 840 1,385 Financial advisor variable compensation 3,233 268 3,501 197 710 907 of which: non-deferred cash 3,064 0 3,064 0 0 0 of which: deferred share-based awards 57 48 106 54 130 183 of which: deferred cash-based awards 112 219 331 144 580 724 Compensation commitments with recruited financial advisors 3 32 510 542 350 1,617 1,967 Total FA variable compensation 3,265 778 4,043 548 2,327 2,874 Total variable compensation including FA variable compensation 5,617 1,428 7,045 4 1,093 3,166 4,259 1 Estimate as of 31 December 2019. Actual amounts expensed may vary, e.g., due to forfeiture of awards. 2 Comprised of replacement payments, forfeiture credits, severance payments, retention plan payments and interest expense related to the Deferred Contingent Capital Plan. 3 Reflects expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements. Amounts reflected as deferred expenses represent the maximum deferred exposure as of the balance sheet date. 4 Includes USD 610 million in expenses related to share-based compensation (performance awards: USD 461 million; other variable compensation: USD 43 million; financial advisor compensation: USD 106 million). A further USD 61 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 10 million related to role-based allowances; social security: USD 25 million; other personnel expenses: USD 27 million related to the Equity Plus Plan). Total personnel expense related to share-based equity-settled compensation excluding social security was USD 619 million. Variable compensation including financial advisor variable compensation (continued) Expenses recognized in 2018 Expenses deferred to 2019 and later 1 USD million Related to the 2018 performance year Related to prior performance years Total Related to the 2018 performance year Related to prior performance years Total Non-deferred cash 2,089 (32) 2,057 0 0 0 Deferred compensation awards 373 565 938 585 653 1,238 of which: Equity Ownership Plan 217 309 526 325 244 570 of which: Deferred Contingent Capital Plan 131 226 357 238 382 620 of which: Asset Management EOP 25 28 53 22 26 48 of which: other performance awards 0 2 2 0 1 1 Variable compensation – performance awards 2,461 534 2,995 585 653 1,238 Variable compensation – other 2 162 80 243 180 269 450 Total variable compensation excluding financial advisor variable compensation 2,624 614 3,238 766 922 1,688 Financial advisor variable compensation 3,233 237 3,470 128 639 767 of which: non-deferred cash 3,089 0 3,089 0 0 0 of which: deferred share-based awards 51 44 95 52 131 183 of which: deferred cash-based awards 93 193 286 76 507 584 Compensation commitments with recruited financial advisors 3 33 551 584 357 1,883 2,240 Total FA variable compensation 3,266 789 4,054 484 2,522 3,006 Total variable compensation including FA variable compensation 5,889 1,403 7,292 4 1,250 3,444 4,694 1 Estimate as of 31 December 2018. Actual amounts expensed may vary, e.g., due to forfeiture of awards. 2 Comprised of replacement payments, forfeiture credits, severance payments, retention plan payments and interest expense related to the Deferred Contingent Capital Plan. 3 Reflects expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements. Amounts reflected as deferred expenses represent the maximum deferred exposure as of the balance sheet date. 4 Includes USD 634 million in expenses related to share-based compensation (performance awards: USD 526 million; other variable compensation: USD 12 million; financial advisor compensation: USD 95 million). A further USD 49 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 15 million related to role-based allowances; social security: USD 8 million; other personnel expenses: USD 26 million related to the Equity Plus Plan). Total personnel expense related to share-based equity-settled compensation excluding social security was USD 676 million.
Disclosure of number and weighted average exercise prices of UBS share and performance share awards [text block]	Movements in outstanding share-based compensation awards Number of shares 2020 Weighted average grant date fair value (USD) Number of shares 2019 Weighted average grant date fair value (USD) Outstanding, at the beginning of the year 156,064,763 14 146,845,027 16 Awarded during the year 72,250,157 11 77,641,909 11 Distributed during the year (46,899,362) 15 (61,152,200) 13 Forfeited during the year (6,515,164) 13 (7,269,974) 14 Outstanding, at the end of the year 174,900,395 12 156,064,763 14 of which: shares vested for accounting purposes 118,260,527 79,486,447
UBS AG
Disclosure Of Equity Participation And Other Compensation Plans [Line Items]
Disclosure of compensation-related personnel expenses [text block]	Variable compensation including financial advisor variable compensation Expenses recognized in 2020 Expenses deferred to 2021 and later 1 USD million Related to the 2020 performance year Related to prior performance years Total Related to the 2020 performance year Related to prior performance years Total Non-deferred cash 1,948 (29) 1,920 0 0 0 Deferred compensation awards 329 704 1,034 734 277 1,011 of which: Equity Ownership Plan 131 315 446 298 67 365 of which: Deferred Contingent Capital Plan 108 339 448 271 189 459 of which: Long-Term Incentive Plan 41 11 52 46 9 55 of which: Asset Management EOP 49 39 88 120 12 132 Variable compensation – performance awards 2,278 675 2,953 734 277 1,011 Variable compensation – other 2 109 92 201 176 189 364 Total variable compensation excluding financial advisor variable compensation 2,387 768 3,155 909 465 1,375 Financial advisor variable compensation 3,356 233 3,589 350 602 952 of which: non-deferred cash 3,154 0 3,154 0 0 0 of which: deferred share-based awards 69 50 119 79 135 214 of which: deferred cash-based awards 133 183 316 271 467 738 Compensation commitments with recruited financial advisors 3 22 480 502 473 1,682 2,155 Total FA variable compensation 3,378 713 4,091 822 2,284 3,106 Total variable compensation including FA variable compensation 5,765 1,481 7,246 4 1,732 2,749 4,481 1 Estimate as of 31 December 2020. Actual amounts to be expensed in future periods may vary, e.g., due to forfeiture of awards. 2 Comprised of replacement payments, forfeiture credits, severance payments, retention plan payments and interest expense related to the Deferred Contingent Capital Plan. 3 Reflects expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements. Amounts reflected as deferred expenses represent the maximum deferred exposure as of the balance sheet date. 4 Includes USD 666 million in expenses related to share-based compensation (performance awards: USD 498 million; other variable compensation: USD 49 million; financial advisor compensation: USD 119 million). A further USD 88 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 4 million related to role-based allowances; social security: USD 51 million; other personnel expenses: USD 34 million related to the Equity Plus Plan). Variable compensation including financial advisor variable compensation (continued) Expenses recognized in 2019 Expenses deferred to 2020 and later 1 USD million Related to the 2019 performance year Related to prior performance years Total Related to the 2019 performance year Related to prior performance years Total Non-deferred cash 1,706 (24) 1,682 0 0 0 Deferred compensation awards 287 576 863 413 592 1,005 of which: Equity Ownership Plan 115 294 410 198 213 412 of which: Deferred Contingent Capital Plan 109 256 365 166 356 521 of which: Long-Term Incentive Plan 38 0 38 23 0 23 of which: Asset Management EOP 25 26 51 26 23 49 Variable compensation – performance awards 1,993 553 2,545 413 592 1,005 Variable compensation – other 2 140 85 225 115 228 343 Total variable compensation excluding financial advisor variable compensation 2,133 638 2,770 528 820 1,348 Financial advisor variable compensation 3,233 268 3,501 197 710 907 of which: non-deferred cash 3,064 0 3,064 0 0 0 of which: deferred share-based awards 57 48 106 54 130 183 of which: deferred cash-based awards 112 219 331 144 580 724 Compensation commitments with recruited financial advisors 3 32 510 542 350 1,617 1,967 Total FA variable compensation 3,265 778 4,043 548 2,327 2,874 Total variable compensation including FA variable compensation 5,398 1,416 6,814 4 1,076 3,146 4,222 1 Estimate as of 31 December 2019. Actual amounts expensed may vary, e.g., due to forfeiture of awards. 2 Comprised of replacement payments, forfeiture credits, severance payments, retention plan payments and interest expense related to the Deferred Contingent Capital Plan. 3 Reflects expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements. Amounts reflected as deferred expenses represent the maximum deferred exposure as of the balance sheet date. 4 Includes USD 595 million in expenses related to share-based compensation (performance awards: USD 448 million; other variable compensation: USD 42 million; financial advisor compensation: USD 106 million). A further USD 54 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 10 million related to role-based allowances; social security: USD 23 million; other personnel expenses: USD 22 million related to the Equity Plus Plan). Variable compensation including financial advisor variable compensation (continued) Expenses recognized in 2018 Expenses deferred to 2019 and later 1 USD million Related to the 2018 performance year Related to prior performance years Total Related to the 2018 performance year Related to prior performance years Total Non-deferred cash 1,896 (26) 1,870 0 0 0 Deferred compensation awards 360 564 924 570 638 1,208 of which: Equity Ownership Plan 208 299 507 316 238 554 of which: Deferred Contingent Capital Plan 126 235 361 232 373 605 of which: Asset Management EOP 25 28 53 22 26 48 of which: other performance awards 0 2 2 0 1 1 Variable compensation – performance awards 2,256 538 2,794 570 638 1,208 Variable compensation – other 2 144 75 220 178 264 442 Total variable compensation excluding financial advisor variable compensation 2,400 613 3,013 748 902 1,650 Financial advisor variable compensation 3,233 237 3,470 128 639 767 of which: non-deferred cash 3,089 0 3,089 0 0 0 of which: deferred share-based awards 51 44 95 52 131 183 of which: deferred cash-based awards 93 193 286 76 507 584 Compensation commitments with recruited financial advisors 3 33 551 584 357 1,883 2,240 Total FA variable compensation 3,266 789 4,054 484 2,522 3,006 Total variable compensation including FA variable compensation 5,666 1,402 7,068 4 1,233 3,424 4,656 1 Estimate as of 31 December 2018. Actual amounts expensed may vary, e.g., due to forfeiture of awards. 2 Comprised of replacement payments, forfeiture credits, severance payments, retention plan payments and interest expense related to the Deferred Contingent Capital Plan. 3 Reflects expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements. Amounts reflected as deferred expenses represent the maximum deferred exposure as of the balance sheet date. 4 Includes USD 612 million in expenses related to share-based compensation (performance awards: USD 507 million; other variable compensation: USD 10 million; financial advisor compensation: USD 95 million). A further USD 44 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 15 million related to role-based allowances; social security: USD 7 million; other personnel expenses: USD 22 million related to the Equity Plus Plan).
Disclosure of number and weighted average exercise prices of UBS share and performance share awards [text block]	Movements in outstanding share-based compensation awards Number of shares 2020 Weighted average grant date fair value (USD) Number of shares 2019 Weighted average grant date fair value (USD) Outstanding, at the beginning of the year 90,443 14 201,793 15 Awarded during the year 19,229 11 29,092 11 Distributed during the year (55,114) 14 (140,441) 14 Forfeited during the year 0 0 0 0 Outstanding, at the end of the year 54,557 13 90,443 14 of which: shares vested for accounting purposes 53,216 56,492

Interests in subsidiaries (Tabl

Interests in subsidiaries (Tables)	12 Months Ended
Interests in subsidiaries (Tables)	Dec. 31, 2020
Disclosure Interests In Subsidiaries [Line Items]
Disclosure Of Significant Investments In Subsidiaries Explanatory	Individually significant subsidiaries of UBS Group AG as of 31 December 2020 Company Registered office Share capital in million Equity interest accumulated in % UBS AG Zurich and Basel, Switzerland CHF 385.8 100.0 UBS Business Solutions AG 1 Zurich, Switzerland CHF 1.0 100.0 1 UBS Business Solutions AG holds subsidiaries in Poland, China and India. Individually significant subsidiaries of UBS AG as of 31 December 2020 1 Company Registered office Primary business Share capital in million Equity interest accumulated in % UBS Americas Holding LLC Wilmington, Delaware, USA Group Functions USD 3,150.0 2 100.0 UBS Americas Inc. Wilmington, Delaware, USA Group Functions USD 0.0 100.0 UBS Asset Management AG Zurich, Switzerland Asset Management CHF 43.2 100.0 UBS Bank USA Salt Lake City, Utah, USA Global Wealth Management USD 0.0 100.0 UBS Europe SE Frankfurt, Germany Global Wealth Management EUR 446.0 100.0 UBS Financial Services Inc. Wilmington, Delaware, USA Global Wealth Management USD 0.0 100.0 UBS Securities LLC Wilmington, Delaware, USA Investment Bank USD 1,283.1 3 100.0 UBS Switzerland AG Zurich, Switzerland Personal & Corporate Banking CHF 10.0 100.0 1 Includes direct and indirect subsidiaries of UBS AG. 2 Consists of common share capital of USD 1,000 and non-voting preferred share capital of USD 3,150,000,000. 3 Consists of common share capital of USD 100,000 and non-voting preferred share capital of USD 1,283,000,000.
UBS AG Subsidiaries
Disclosure Interests In Subsidiaries [Line Items]
Disclosure Of Significant Investments In Subsidiaries Explanatory	Other subsidiaries of UBS AG as of 31 December 2020 Company Registered office Primary business Share capital in million Equity interest accumulated in % UBS Asset Management (Americas) Inc. Wilmington, Delaware, USA Asset Management USD 0.0 100.0 UBS Asset Management (Hong Kong) Limited Hong Kong, Hong Kong Asset Management HKD 254.0 100.0 UBS Asset Management Life Ltd London, United Kingdom Asset Management GBP 15.0 100.0 UBS Asset Management Switzerland AG Zurich, Switzerland Asset Management CHF 0.5 100.0 UBS Asset Management (UK) Ltd London, United Kingdom Asset Management GBP 125.0 100.0 UBS Business Solutions US LLC Wilmington, Delaware, USA Group Functions USD 0.0 100.0 UBS Credit Corp. Wilmington, Delaware, USA Global Wealth Management USD 0.0 100.0 UBS (France) S.A. Paris, France Global Wealth Management EUR 133.0 100.0 UBS Fund Management (Luxembourg) S.A. Luxembourg, Luxembourg Asset Management EUR 13.0 100.0 UBS Fund Management (Switzerland) AG Basel, Switzerland Asset Management CHF 1.0 100.0 UBS (Monaco) S.A. Monte Carlo, Monaco Global Wealth Management EUR 49.2 100.0 UBS Realty Investors LLC Boston, Massachusetts, USA Asset Management USD 9.0 100.0 UBS Securities Australia Ltd Sydney, Australia Investment Bank AUD 0.3 1 100.0 UBS Securities Hong Kong Limited Hong Kong, Hong Kong Investment Bank HKD 3,154.2 100.0 UBS Securities Japan Co., Ltd. Tokyo, Japan Investment Bank JPY 32,100.0 100.0 UBS Securities Pte. Ltd. Singapore, Singapore Investment Bank SGD 420.4 100.0 1 Includes a nominal amount relating to redeemable preference shares.
UBS AG
Disclosure Interests In Subsidiaries [Line Items]
Disclosure Of Significant Investments In Subsidiaries Explanatory	Individually significant subsidiaries of UBS Group AG as of 31 December 2020 Company Registered office Share capital in million Equity interest accumulated in % UBS AG Zurich and Basel, Switzerland CHF 385.8 100.0 UBS Business Solutions AG 1 Zurich, Switzerland CHF 1.0 100.0 1 UBS Business Solutions AG holds subsidiaries in Poland, China and India. Individually significant subsidiaries of UBS AG as of 31 December 2020 1 Company Registered office Primary business Share capital in million Equity interest accumulated in % UBS Americas Holding LLC Wilmington, Delaware, USA Group Functions USD 3,150.0 2 100.0 UBS Americas Inc. Wilmington, Delaware, USA Group Functions USD 0.0 100.0 UBS Asset Management AG Zurich, Switzerland Asset Management CHF 43.2 100.0 UBS Bank USA Salt Lake City, Utah, USA Global Wealth Management USD 0.0 100.0 UBS Europe SE Frankfurt, Germany Global Wealth Management EUR 446.0 100.0 UBS Financial Services Inc. Wilmington, Delaware, USA Global Wealth Management USD 0.0 100.0 UBS Securities LLC Wilmington, Delaware, USA Investment Bank USD 1,283.1 3 100.0 UBS Switzerland AG Zurich, Switzerland Personal & Corporate Banking CHF 10.0 100.0 1 Includes direct and indirect subsidiaries of UBS AG. 2 Consists of common share capital of USD 1,000 and non-voting preferred share capital of USD 3,150,000,000. 3 Consists of common share capital of USD 100,000 and non-voting preferred share capital of USD 1,283,000,000.
UBS AG \| UBS AG Subsidiaries
Disclosure Interests In Subsidiaries [Line Items]
Disclosure Of Significant Investments In Subsidiaries Explanatory	Other subsidiaries of UBS AG as of 31 December 2020 Company Registered office Primary business Share capital in million Equity interest accumulated in % UBS Asset Management (Americas) Inc. Wilmington, Delaware, USA Asset Management USD 0.0 100.0 UBS Asset Management (Hong Kong) Limited Hong Kong, Hong Kong Asset Management HKD 254.0 100.0 UBS Asset Management Life Ltd London, United Kingdom Asset Management GBP 15.0 100.0 UBS Asset Management Switzerland AG Zurich, Switzerland Asset Management CHF 0.5 100.0 UBS Asset Management (UK) Ltd London, United Kingdom Asset Management GBP 125.0 100.0 UBS Business Solutions US LLC Wilmington, Delaware, USA Group Functions USD 0.0 100.0 UBS Credit Corp. Wilmington, Delaware, USA Global Wealth Management USD 0.0 100.0 UBS (France) S.A. Paris, France Global Wealth Management EUR 133.0 100.0 UBS Fund Management (Luxembourg) S.A. Luxembourg, Luxembourg Asset Management EUR 13.0 100.0 UBS Fund Management (Switzerland) AG Basel, Switzerland Asset Management CHF 1.0 100.0 UBS (Monaco) S.A. Monte Carlo, Monaco Global Wealth Management EUR 49.2 100.0 UBS Realty Investors LLC Boston, Massachusetts, USA Asset Management USD 9.0 100.0 UBS Securities Australia Ltd Sydney, Australia Investment Bank AUD 0.3 1 100.0 UBS Securities Hong Kong Limited Hong Kong, Hong Kong Investment Bank HKD 3,154.2 100.0 UBS Securities Japan Co., Ltd. Tokyo, Japan Investment Bank JPY 32,100.0 100.0 UBS Securities Pte. Ltd. Singapore, Singapore Investment Bank SGD 420.4 100.0 1 Includes a nominal amount relating to redeemable preference shares.

Interests in associates and j_2

Interests in associates and joint ventures (Tables)	12 Months Ended
Interests in associates and joint ventures (Tables)	Dec. 31, 2020
Disclosure Interests In Associates And Joint Ventures [Line Items]
Disclosure of investments in associates and joint ventures [text block]	Investments in associates and joint ventures USD million 2020 2019 Carrying amount at the beginning of the year 1,051 1,099 Additions 1 388 0 Disposals 0 0 Share of comprehensive income 83 25 of which: share of net profit 2 84 46 of which: share of other comprehensive income 3 (1) (21) Share of changes in retained earnings (40) 0 Dividends received (33) (83) Impairment 0 (1) Foreign currency translation 108 11 Carrying amount at the end of the year 1,557 1,051 of which: associates 1,513 1,010 of which: SIX Group AG, Zurich 4 965 887 of which: Clearstream Fund Centre AG, Zurich 1 399 of which: other associates 150 123 of which: joint ventures 44 41 1 On 30 September 2020, UBS completed the sale of a 51.2% stake in Fondcenter AG to Clearstream and deconsolidated the entity in accordance with IFRS 10, Consolidated Financial Statements. The retained minority shareholding of 48.8% is accounted for as an associate and increased the investments in associates by USD 385 million upon completion of the transaction. Refer to Note 29 for more information. 2 For 2020, consists of USD 64 million from associates and USD 19 million from joint ventures. For 2019, consists of USD 28 million from associates and USD 18 million from joint ventures. 3 For 2020, consists of negative USD 1 million from associates. For 2019, consists of negative USD 22 million from associates and USD 1 million from joint ventures. 4 In 2020, UBS AG’s equity interest amounts to 17.31%. UBS AG is represented on the Board of Directors.
UBS AG
Disclosure Interests In Associates And Joint Ventures [Line Items]
Disclosure of investments in associates and joint ventures [text block]	Investments in associates and joint ventures USD million 2020 2019 Carrying amount at the beginning of the year 1,051 1,099 Additions 1 388 0 Disposals 0 0 Share of comprehensive income 83 25 of which: share of net profit 2 84 46 of which: share of other comprehensive income 3 (1) (21) Share of changes in retained earnings (40) 0 Dividends received (33) (83) Impairment 0 (1) Foreign currency translation 108 11 Carrying amount at the end of the year 1,557 1,051 of which: associates 1,513 1,010 of which: SIX Group AG, Zurich 4 965 887 of which: Clearstream Fund Centre AG, Zurich 1 399 of which: other associates 150 123 of which: joint ventures 44 41 1 On 30 September 2020, UBS AG completed the sale of a 51.2% stake in Fondcenter AG to Clearstream and deconsolidated the entity in accordance with IFRS 10, Consolidated Financial Statements. The retained minority shareholding of 48.8% is accounted for as an associate and increased the investments in associates by USD 385 million upon completion of the transaction. Refer to Note 29 for more information. 2 For 2020, consists of USD 64 million from associates and USD 19 million from joint ventures. For 2019, consists of USD 28 million from associates and USD 18 million from joint ventures. 3 For 2020, consists of negative USD 1 million from associates. For 2019, consists of negative USD 22 million from associates and USD 1 million from joint ventures. 4 In 2020, UBS AG’s equity interest amounts to 17.31%. UBS AG is represented on the Board of Directors.

Interests in unconsolidated s_2

Interests in unconsolidated structured entities (Tables)	12 Months Ended
Interests in unconsolidated structured entities (Tables)	Dec. 31, 2020
Disclosure Interests In Unconsolidated Structured Entities [Line Items]
Disclosure Of Interests In Unconsolidated Structured Entities Explanatory	Interests in unconsolidated structured entities 31.12.20 USD million, except where indicated Securitization vehicles Client vehicles Investment funds Total Maximum exposure to loss 1 Financial assets at fair value held for trading 375 131 7,595 8,101 8,101 Derivative financial instruments 6 49 158 213 211 Loans and advances to customers 179 179 179 Financial assets at fair value not held for trading 35 1 2 172 208 208 Financial assets measured at fair value through other comprehensive income 6,624 6,624 6,624 Other financial assets measured at amortized cost 0 2 0 250 Total assets 416 3 6,805 8,104 15,326 Derivative financial instruments 3 4 11 376 390 0 Total liabilities 3 11 376 390 Assets held by the unconsolidated structured entities in which UBS had an interest (USD billion) 39 5 136 6 484 7 31.12.19 USD million, except where indicated Securitization vehicles Client vehicles Investment funds Total Maximum exposure to loss 1 Financial assets at fair value held for trading 462 130 5,874 6,466 6,466 Derivative financial instruments 9 9 36 55 53 Loans and advances to customers 174 174 174 Financial assets at fair value not held for trading 81 8 2 157 245 997 Financial assets measured at fair value through other comprehensive income 3,955 3,955 3,955 Other financial assets measured at amortized cost 335 16 2 351 1,372 Total assets 888 3 4,118 6,242 11,247 Derivative financial instruments 2 4 225 324 552 1 Total liabilities 2 225 324 552 Assets held by the unconsolidated structured entities in which UBS had an interest (USD billion) 55 5 73 6 413 7 1 For the purpose of this disclosure, maximum exposure to loss amounts do not consider the risk-reducing effects of collateral or other credit enhancements. 2 Represents the carrying amount of loan commitments. The maximum exposure to loss for these instruments is equal to the notional amount. 3 As of 31 December 2020, USD 0.2 billion of the USD 0.4 billion (31 December 2019: USD 0.6 billion of the USD 0.9 billion) was held in Group Functions – Non-core and Legacy Portfolio. 4 Comprised of credit default swap liabilities and other swap liabilities. The maximum exposure to loss for credit default swap liabilities is equal to the sum of the negative carrying amount and the notional amount. For other swap liabilities, no maximum exposure to loss is reported. 5 Represents the principal amount outstanding. 6 Represents the market value of total assets. 7 Represents the net asset value of the investment funds sponsored by UBS and the carrying amount of UBS’s interests in the investment funds not sponsored by UBS.
Sponsored by UBS \| in which UBS did not have an interest at year-end
Disclosure Interests In Unconsolidated Structured Entities [Line Items]
Disclosure Of Interests In Unconsolidated Structured Entities Explanatory	Sponsored unconsolidated structured entities in which UBS did not have an interest at year-end As of or for the year ended 31.12.20 USD million, except where indicated Securitization vehicles Client vehicles Investment funds Total Net interest income 1 12 2 15 Net fee and commission income 1 58 60 Other net income from financial instruments measured at fair value through profit or loss 0 17 (15) 2 Total income 1 30 45 76 Asset information (USD billion) 0 1 9 2 37 3 As of or for the year ended 31.12.19 USD million, except where indicated Securitization vehicles Client vehicles Investment funds Total Net interest income (1) 0 (1) (2) Net fee and commission income 13 50 63 Other net income from financial instruments measured at fair value through profit or loss 19 (18) 9 11 Total income 19 (5) 58 72 Asset information (USD billion) 2 1 1 2 42 3 1 Represents the amount of assets transferred to the respective securitization vehicles. 2 Represents the amount of assets transferred to the respective client vehicles. 3 Represents the total net asset value of the respective investment funds.
UBS AG
Disclosure Interests In Unconsolidated Structured Entities [Line Items]
Disclosure Of Interests In Unconsolidated Structured Entities Explanatory	Interests in unconsolidated structured entities 31.12.20 USD million, except where indicated Securitization vehicles Client vehicles Investment funds Total Maximum exposure to loss 1 Financial assets at fair value held for trading 375 131 7,595 8,101 8,101 Derivative financial instruments 6 49 158 213 211 Loans and advances to customers 179 179 179 Financial assets at fair value not held for trading 35 1 2 73 109 109 Financial assets measured at fair value through other comprehensive income 6,624 6,624 6,624 Other financial assets measured at amortized cost 0 2 0 250 Total assets 416 3 6,805 8,005 15,227 Derivative financial instruments 3 4 11 376 390 0 Total liabilities 3 11 376 390 Assets held by the unconsolidated structured entities in which UBS had an interest (USD billion) 39 5 136 6 484 7 31.12.19 USD million, except where indicated Securitization vehicles Client vehicles Investment funds Total Maximum exposure to loss 1 Financial assets at fair value held for trading 462 130 5,874 6,466 6,466 Derivative financial instruments 9 9 36 55 53 Loans and advances to customers 174 174 174 Financial assets at fair value not held for trading 81 8 2 62 151 902 Financial assets measured at fair value through other comprehensive income 3,955 3,955 3,955 Other financial assets measured at amortized cost 335 16 2 351 1,372 Total assets 888 3 4,118 6,147 11,152 Derivative financial instruments 2 4 225 324 552 1 Total liabilities 2 225 324 552 Assets held by the unconsolidated structured entities in which UBS had an interest (USD billion) 55 5 73 6 413 7 1 For the purpose of this disclosure, maximum exposure to loss amounts do not consider the risk-reducing effects of collateral or other credit enhancements. 2 Represents the carrying amount of loan commitments. The maximum exposure to loss for these instruments is equal to the notional amount. 3 As of 31 December 2020, USD 0.2 billion of the USD 0.4 billion (31 December 2019: USD 0.6 billion of the USD 0.9 billion) was held in Group Functions – Non-core and Legacy Portfolio. 4 Comprised of credit default swap liabilities and other swap liabilities. The maximum exposure to loss for credit default swap liabilities is equal to the sum of the negative carrying amount and the notional amount. For other swap liabilities, no maximum exposure to loss is reported. 5 Represents the principal amount outstanding. 6 Represents the market value of total assets. 7 Represents the net asset value of the investment funds sponsored by UBS and the carrying amount of UBS’s interests in the investment funds not sponsored by UBS.
UBS AG \| Sponsored by UBS \| in which UBS did not have an interest at year-end
Disclosure Interests In Unconsolidated Structured Entities [Line Items]
Disclosure Of Interests In Unconsolidated Structured Entities Explanatory	Sponsored unconsolidated structured entities in which UBS did not have an interest at year-end As of or for the year ended 31.12.20 USD million, except where indicated Securitization vehicles Client vehicles Investment funds Total Net interest income 1 12 2 15 Net fee and commission income 1 58 60 Other net income from financial instruments measured at fair value through profit or loss 0 17 (15) 2 Total income 1 30 45 76 Asset information (USD billion) 0 1 9 2 37 3 As of or for the year ended 31.12.19 USD million, except where indicated Securitization vehicles Client vehicles Investment funds Total Net interest income (1) 0 (1) (2) Net fee and commission income 13 50 63 Other net income from financial instruments measured at fair value through profit or loss 19 (18) 9 11 Total income 19 (5) 58 72 Asset information (USD billion) 2 1 1 2 42 3 1 Represents the amount of assets transferred to the respective securitization vehicles. 2 Represents the amount of assets transferred to the respective client vehicles. 3 Represents the total net asset value of the respective investment funds.

Finance lease receivables (Tabl

Finance lease receivables (Tables)	12 Months Ended
Finance lease receivables (Tables)	Dec. 31, 2020
Disclosure Of Operating Leases And Finance Leases Table [Line Items]
Disclosure Of Maturity Analysis Of Finance Lease Payments Receivable Explanatory	Lease receivables USD million 31.12.20 Total minimum lease payments Unearned finance income Present value 2021 450 25 426 2022–2025 856 31 825 Thereafter 215 4 210 Total 1,521 60 1,461 USD million 31.12.19 Total minimum lease payments Unearned finance income Present value 2020 448 31 417 2021–2024 874 52 822 Thereafter 221 6 215 Total 1,544 89 1,455
UBS AG
Disclosure Of Operating Leases And Finance Leases Table [Line Items]
Disclosure Of Maturity Analysis Of Finance Lease Payments Receivable Explanatory	Lease receivables USD million 31.12.20 Total minimum lease payments Unearned finance income Present value 2021 450 25 426 2022–2025 856 31 825 Thereafter 215 4 210 Total 1,521 60 1,461 USD million 31.12.19 Total minimum lease payments Unearned finance income Present value 2020 448 31 417 2021–2024 874 52 822 Thereafter 221 6 215 Total 1,544 89 1,455

Related parties (Tables)

Related parties (Tables)	12 Months Ended
Related parties (Tables)	Dec. 31, 2020
Disclosure Of Transactions Between Related Parties [Line Items]
Disclosure Of Transactions Between Related Parties Explanatory	Related-party disclosure For the year ended USD million 31.12.20 31.12.19 31.12.18 Received by UBS Fees 34 34 35 Paid by UBS Rent 5 4 4 Dividends, capital repayments and interest 10 11 10
Key management personnel \| Remuneration
Disclosure Of Transactions Between Related Parties [Line Items]
Disclosure Of Transactions Between Related Parties Explanatory	Remuneration of key management personnel USD million, except where indicated 31.12.20 31.12.19 31.12.18 Base salaries and other cash payments 1 33 32 27 Incentive awards – cash 2 18 14 15 Annual incentive award under DCCP 27 21 22 Employer’s contributions to retirement benefit plans 3 3 3 Benefits in kind, fringe benefits (at market value) 1 1 2 Equity-based compensation 3 47 37 40 Total 129 108 109 Total (CHF million) 4 121 107 107 1 May include role-based allowances in line with market practice and regulatory requirements. 2 The cash portion may also include blocked shares in line with regulatory requirements. 3 Compensation expense is based on the share price on grant date taking into account performance conditions. Refer to Note 27 for more information. For GEB members, equity-based compensation for 2020 and 2019 was entirely composed of LTIP awards and equity-based compensation for 2018 was entirely composed of EOP awards. For the Chairman of the BoD the equity-based compensation for 2020, 2019 and 2018 was entirely composed of UBS shares. 4 Swiss franc amounts disclosed represent the respective US dollar amounts translated at the applicable performance award currency exchange rates (2020: USD / CHF 0.94; 2019: USD / CHF 0.99; 2018: USD / CHF 0.98).
Key management personnel \| Equity holdings
Disclosure Of Transactions Between Related Parties [Line Items]
Disclosure Of Transactions Between Related Parties Explanatory	Equity holdings of key management personnel 1 31.12.20 31.12.19 Number of shares held by members of the BoD, GEB and parties closely linked to them 2 5,288,317 6,887,826 1 No options were held in 2020 and 2019 by non-independent menbers of the BoD and any GEB member or any of its related parties. 2 Excludes shares granted under variable compensation plans with forfeiture provisions.
Key management personnel \| Loans, advances and mortgages
Disclosure Of Transactions Between Related Parties [Line Items]
Disclosure Of Transactions Between Related Parties Explanatory	Loans, advances and mortgages to key management personnel 1 USD million, except where indicated 2020 2019 Balance at the beginning of the year 33 34 Additions 14 9 Reductions (8) (11) Balance at the end of the year 2 38 33 Balance at the end of the year (CHF million) 2, 3 34 32 1 All loans are secured loans. 2 There were no unused uncommitted credit facilities as of 31 December 2020 and 31 December 2019. 3 Swiss franc amounts disclosed represent the respective US dollar amounts translated at the relevant year-end closing exchange rate.
Associates and joint ventures
Disclosure Of Transactions Between Related Parties [Line Items]
Disclosure Of Transactions Between Related Parties Explanatory	Loans to and outstanding receivables from associates and joint ventures USD million 2020 2019 Carrying amount at the beginning of the year 982 829 Additions 527 145 Reductions (1,001) (5) Foreign currency translation 123 13 Carrying amount at the end of the year 630 982 of which: unsecured loans and receivables 621 971 Other transactions with associates and joint ventures As of or for the year ended USD million 31.12.20 31.12.19 Payments to associates and joint ventures for goods and services received 139 124 Fees received for services provided to associates and joint ventures 128 1 Liabilities to associates and joint ventures 91 101 Commitments and contingent liabilities to associates and joint ventures 9 1,598
UBS AG
Disclosure Of Transactions Between Related Parties [Line Items]
Disclosure Of Transactions Between Related Parties Explanatory	Related-party disclosure For the year ended USD million 31.12.20 31.12.19 31.12.18 Received by UBS AG Fees 19 19 22 Paid by UBS AG Rent 3 2 3 Dividends, capital repayments and interest 10 10 10
UBS AG \| Key management personnel \| Remuneration
Disclosure Of Transactions Between Related Parties [Line Items]
Disclosure Of Transactions Between Related Parties Explanatory	Remuneration of key management personnel USD million, except where indicated 31.12.20 31.12.19 31.12.18 Base salaries and other cash payments 1 31 30 25 Incentive awards – cash 2 17 13 14 Annual incentive award under DCCP 26 20 21 Employer’s contributions to retirement benefit plans 2 2 3 Benefits in kind, fringe benefits (at market value) 1 1 2 Equity-based compensation 3 45 34 38 Total 122 101 102 Total (CHF million) 4 115 101 100 1 May include role-based allowances in line with market practice and regulatory requirements. 2 The cash portion may also include blocked shares in line with regulatory requirements. 3 Compensation expense is based on the share price on grant date taking into account performance conditions. Refer to Note 27 for more information. For EB members, equity-based compensation for 2020 and 2019 was entirely composed of LTIP awards and equity-based compensation for 2018 was entirely composed of EOP awards. For the Chairman of the BoD, the equity-based compensation for 2020, 2019 and 2018 was entirely composed of UBS shares. 4 Swiss franc amounts disclosed represent the respective US dollar amounts translated at the applicable performance award currency exchange rates (2020: USD / CHF 0.94; 2019: USD / CHF 0.99; 2018: USD / CHF 0.98)
UBS AG \| Key management personnel \| Equity holdings
Disclosure Of Transactions Between Related Parties [Line Items]
Disclosure Of Transactions Between Related Parties Explanatory	Equity holdings of key management personnel 1 31.12.20 31.12.19 Number of shares held by members of the BoD, EB and parties closely linked to them 2 4,956,640 6,609,848 1 No options were held in 2020 and 2019 by non-independent menbers of the BoD and any GEB member or any of its related parties. 2 Excludes shares granted under variable compensation plans with forfeiture provisions.
UBS AG \| Key management personnel \| Loans, advances and mortgages
Disclosure Of Transactions Between Related Parties [Line Items]
Disclosure Of Transactions Between Related Parties Explanatory	Loans, advances and mortgages to key management personnel 1 USD million, except where indicated 2020 2019 Balance at the beginning of the year 23 28 Additions 13 6 Reductions (5) (11) Balance at the end of the year 2 31 23 Balance at the end of the year (CHF million) 2, 3 28 22 1 All loans are secured loans. 2 There were no unused uncommitted credit facilities as of 31 December 2020 and 31 December 2019. 3 Swiss franc amounts disclosed represent the respective US dollar amounts translated at the relevant year-end closing exchange rate.
UBS AG \| Associates and joint ventures
Disclosure Of Transactions Between Related Parties [Line Items]
Disclosure Of Transactions Between Related Parties Explanatory	Loans to and outstanding receivables from associates and joint ventures USD million 2020 2019 Carrying amount at the beginning of the year 982 829 Additions 527 145 Reductions (1,001) (5) Foreign currency translation 123 13 Carrying amount at the end of the year 630 982 of which: unsecured loans and receivables 621 971 Other transactions with associates and joint ventures As of or for the year ended USD million 31.12.20 31.12.19 Payments to associates and joint ventures for goods and services received 139 124 Fees received for services provided to associates and joint ventures 128 1 Liabilities to associates and joint ventures 91 101 Commitments and contingent liabilities to associates and joint ventures 9 1,598
UBS AG \| UBS Group AG and other subsidiaries of UBS Group AG
Disclosure Of Transactions Between Related Parties [Line Items]
Disclosure Of Transactions Between Related Parties Explanatory	USD million 31.12.20 31.12.19 Receivables Loans and advances to customers 1,470 1,255 Financial assets at fair value held for trading 76 180 Other financial assets measured at amortized cost 38 60 Payables Customer deposits 3,324 2,314 Funding from UBS Group AG and its subsidiaries 53,979 47,866 Other financial liabilities measured at amortized cost 1,820 1,829 Other financial liabilities designated at fair value 1 1,375 217 1 Represents funding recognized from UBS Group AG and its subsidiaries that is designated at fair value. Refer to Note 19b for more information.

Invested assets and net new m_2

Invested assets and net new money (Tables)	12 Months Ended
Invested assets and net new money (Tables)	Dec. 31, 2020
Disclosure Of Invested Assets And Net New Money [Line Items]
Disclosure of invested assets and net new money [text block]	Invested assets and net new money As of or for the year ended USD billion 31.12.20 31.12.19 Fund assets managed by UBS 397 358 Discretionary assets 1,459 1,209 Other invested assets 2,331 2,040 Total invested assets 1 4,187 3,607 of which: double counts 311 248 Net new money 1 127 51 1 Includes double counts.
Development of invested assets	Development of invested assets USD billion 2020 2019 Total invested assets at the beginning of the year 1 3,607 3,101 Net new money 127 51 Market movements 2 359 444 Foreign currency translation 96 6 Other effects (1) 5 of which: acquisitions / (divestments) 0 (1) Total invested assets at the end of the year 1 4,187 3,607 1 Includes double counts. 2 Includes interest and dividend income.
UBS AG
Disclosure Of Invested Assets And Net New Money [Line Items]
Disclosure of invested assets and net new money [text block]	Invested assets and net new money As of or for the year ended USD billion 31.12.20 31.12.19 Fund assets managed by UBS 397 358 Discretionary assets 1,459 1,209 Other invested assets 2,331 2,040 Total invested assets 1 4,187 3,607 of which: double counts 311 248 Net new money 1 127 51 1 Includes double counts.
Development of invested assets	Development of invested assets USD billion 2020 2019 Total invested assets at the beginning of the year 1 3,607 3,101 Net new money 127 51 Market movements 2 359 444 Foreign currency translation 96 6 Other effects (1) 5 of which: acquisitions / (divestments) 0 (1) Total invested assets at the end of the year 1 4,187 3,607 1 Includes double counts. 2 Includes interest and dividend income.

Currency translation rates (Tab

Currency translation rates (Tables)	12 Months Ended
Currency translation rates (Tables)	Dec. 31, 2020
Foreign Exchange Rates [Line Items]
Disclosure of foreign exchange rates [text block]	Closing exchange rate Average rate 1 As of For the year ended 31.12.20 31.12.19 31.12.20 31.12.19 31.12.18 1 CHF 1.13 1.03 1.07 1.01 1.02 1 EUR 1.22 1.12 1.15 1.12 1.18 1 GBP 1.37 1.32 1.29 1.28 1.33 100 JPY 0.97 0.92 0.94 0.92 0.91 1 Monthly income statement items of operations with a functional currency other than the US dollar are translated with month-end rates into US dollars. Disclosed average rates for a year represent an average of 12 month-end rates, weighted according to the income and expense volumes of all operations of the Group with the same functional currency for each month. Weighted average rates for individual business divisions may deviate from the weighted average rates for the Group.
UBS AG
Foreign Exchange Rates [Line Items]
Disclosure of foreign exchange rates [text block]	Closing exchange rate Average rate 1 As of For the year ended 31.12.20 31.12.19 31.12.20 31.12.19 31.12.18 1 CHF 1.13 1.03 1.07 1.01 1.02 1 EUR 1.22 1.12 1.15 1.12 1.18 1 GBP 1.37 1.32 1.29 1.28 1.33 100 JPY 0.97 0.92 0.94 0.92 0.91 1 Monthly income statement items of operations with a functional currency other than the US dollar are translated with month-end rates into US dollars. Disclosed average rates for a year represent an average of 12 month-end rates, weighted according to the income and expense volumes of all operations of UBS AG with the same functional currency for each month. Weighted average rates for individual business divisions may deviate from the weighted average rates for UBS AG.

Supplemental guarantor inform_2

Supplemental guarantor information required under SEC regulations (Tables) - UBS AG	12 Months Ended
	Dec. 31, 2020
Supplemental Guarantor Information [Line Items]
Schedule Of Condensed Income Statement [Table Text Block]	Supplemental guarantor consolidated income statement USD million UBS AG (standalone) 1 UBS Switzerland AG (standalone) 1 Other subsidiaries 2 Elimination entries UBS AG (consolidated) For the year ended 31 December 2020 Operating income Interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 3,386 3,636 2,612 (818) 8,816 Interest expense from financial instruments measured at amortized cost (3,694) (513) (1,261) 1,134 (4,333) Net interest income from financial instruments measured at fair value through profit or loss 1,103 164 311 (273) 1,305 Net interest income 794 3,288 1,662 43 5,788 Other net income from financial instruments measured at fair value through profit or loss 4,857 911 1,044 118 6,930 Credit loss (expense) / release (352) (286) (56) 0 (695) Fee and commission income 3,731 4,585 13,651 (984) 20,982 Fee and commission expense (644) (829) (1,263) 961 (1,775) Net fee and commission income 3,087 3,756 12,388 (23) 19,207 Other income 4,671 233 2,585 (5,941) 1,549 Total operating income 13,057 7,902 17,623 (5,803) 32,780 Operating expenses Personnel expenses 3,458 2,017 9,211 0 14,686 General and administrative expenses 3,507 3,313 4,147 (2,481) 8,486 Depreciation and impairment of property, equipment and software 1,008 261 698 (116) 1,851 Amortization and impairment of goodwill and intangible assets 5 0 52 1 57 Total operating expenses 7,978 5,591 14,108 (2,596) 25,081 Operating profit / (loss) before tax 5,079 2,311 3,515 (3,207) 7,699 Tax expense / (benefit) 238 444 912 (107) 1,488 Net profit / (loss) 4,840 1,868 2,603 (3,100) 6,211 Net profit / (loss) attributable to non-controlling interests 0 0 15 0 15 Net profit / (loss) attributable to shareholders 4,840 1,868 2,588 (3,100) 6,196 1 Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP. 2 The ”Other subsidiaries“ column includes consolidated information for the UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG significant sub-groups, as well as standalone information for other subsidiaries. Supplemental guarantor consolidated income statement USD million UBS AG (standalone) 1,2 UBS Switzerland AG (standalone) 1 Other subsidiaries 3 Elimination entries UBS AG (consolidated) For the year ended 31 December 2019 Operating income Interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 4,864 4,048 3,719 (1,928) 10,703 Interest expense from financial instruments measured at amortized cost (6,547) (737) (2,317) 2,298 (7,303) Net interest income from financial instruments measured at fair value through profit or loss 1,177 (228) 394 (327) 1,015 Net interest income (506) 3,083 1,796 42 4,415 Other net income from financial instruments measured at fair value through profit or loss 5,116 924 1,114 (322) 6,833 Credit loss (expense) / release (51) 7 (33) 0 (78) Fee and commission income 3,285 4,342 12,527 (997) 19,156 Fee and commission expense (674) (819) (1,188) 986 (1,696) Net fee and commission income 2,610 4 3,523 4 11,338 (11) 17,460 Other income 4,899 259 1,960 (6,442) 677 Total operating income 12,069 7,796 16,176 (6,733) 29,307 Operating expenses Personnel expenses 3,251 1,936 8,614 0 13,801 General and administrative expenses 3,467 3,181 4,565 (2,627) 8,586 Depreciation and impairment of property, equipment and software 861 221 602 (108) 1,576 Amortization and impairment of goodwill and intangible assets 94 0 170 (88) 175 Total operating expenses 7,672 5,338 13,951 (2,823) 24,138 Operating profit / (loss) before tax 4,396 2,458 2,225 (3,911) 5,169 Tax expense / (benefit) 175 514 530 (21) 1,198 Net profit / (loss) 4,221 1,944 1,695 (3,890) 3,971 Net profit / (loss) attributable to non-controlling interests 0 0 6 0 6 Net profit / (loss) attributable to shareholders 4,221 1,944 1,689 (3,889) 3,965 1 Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP. 2 Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in a decrease in Net profit attributable to shareholders for the year ended 31 December 2019 of USD 61 million, almost entirely reflected within Other income. 3 The ”Other subsidiaries“ column includes consolidated information for the UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG significant sub-groups, as well as standalone information for other subsidiaries. 4 Includes the effects of the transfer in 2019 of beneficial ownership of a portion of Global Wealth Management international business booked in Switzerland from UBS Switzerland AG to UBS AG. Refer to “Note 25 Changes in organization and other events affecting comparability” in the “UBS AG standalone financial statements” section of the UBS AG Standalone financial statements and regulatory information for the year ended 31 December 2019. Supplemental guarantor consolidated income statement USD million UBS AG (standalone) 1,2 UBS Switzerland AG (standalone) 1 Other subsidiaries 3 Elimination entries UBS AG (consolidated) For the year ended 31 December 2018 Operating income Interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 4,532 4,230 3,634 (2,275) 10,121 Interest expense from financial instruments measured at amortized cost (6,109) (598) (2,192) 2,405 (6,494) Net interest income from financial instruments measured at fair value through profit or loss 1,079 (270) 625 (91) 1,344 Net interest income (497) 3,363 2,068 38 4,971 Other net income from financial instruments measured at fair value through profit or loss 5,204 889 970 (110) 6,953 Credit loss (expense) / release (37) (52) (9) (19) (117) Fee and commission income 2,655 4,474 13,159 (656) 19,632 Fee and commission expense (851) (391) (1,108) 648 (1,703) Net fee and commission income 1,804 4,083 12,050 (8) 17,930 Other income 5,248 198 2,110 (6,651) 905 Total operating income 11,722 8,480 17,189 (6,749) 30,642 Operating expenses Personnel expenses 3,592 1,890 8,510 0 13,992 General and administrative expenses 4,691 3,471 5,403 (3,490) 10,075 Depreciation and impairment of property, equipment and software 715 21 316 0 1,052 Amortization and impairment of goodwill and intangible assets 3 0 62 0 65 Total operating expenses 9,001 5,382 14,291 (3,490) 25,184 Operating profit / (loss) before tax 2,721 3,098 2,898 (3,259) 5,458 Tax expense / (benefit) 29 670 577 68 1,345 Net profit / (loss) 2,691 2,428 2,321 (3,327) 4,113 Net profit / (loss) attributable to non-controlling interests 0 0 7 0 7 Net profit / (loss) attributable to shareholders 2,691 2,428 2,314 (3,327) 4,107 1 Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP. 2 Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in an increase in Net profit attributable to shareholders for the year ended 31 December 2018 of USD 521 million, almost entirely reflected within Other income. 3 The ”Other subsidiaries“ column includes consolidated information for the UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG significant sub-groups, as well as standalone information for other subsidiaries.
Condensed Statement Of Comprehensive Income [Table Text Block]	Supplemental guarantor consolidated statement of comprehensive income USD million UBS AG (standalone) 1 UBS Switzerland AG (standalone) 1 Other subsidiaries 2 Elimination entries UBS AG (consolidated) For the year ended 31 December 2020 Comprehensive income attributable to shareholders Net profit / (loss) 4,840 1,868 2,588 (3,100) 6,196 Other comprehensive income Other comprehensive income that may be reclassified to the income statement Foreign currency translation, net of tax 81 1,228 690 (969) 1,030 Financial assets measured at fair value through other comprehensive income, net of tax 0 0 137 0 136 Cash flow hedges, net of tax 902 26 101 (18) 1,011 Cost of hedging, net of tax (13) (13) Total other comprehensive income that may be reclassified to the income statement, net of tax 971 1,254 928 (988) 2,165 Other comprehensive income that will not be reclassified to the income statement Defined benefit plans, net of tax (67) (107) 40 0 (134) Own credit on financial liabilities designated at fair value, net of tax (293) (293) Total other comprehensive income that will not be reclassified to the income statement, net of tax (360) (107) 40 0 (427) Total other comprehensive income 611 1,147 968 (988) 1,738 Total comprehensive income attributable to shareholders 5,451 3,015 3,556 (4,088) 7,934 Total comprehensive income attributable to non-controlling interests 36 36 Total comprehensive income 5,451 3,015 3,592 (4,088) 7,970 1 Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP. 2 The ”Other subsidiaries“ column includes consolidated information for the UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG significant sub-groups, as well as standalone information for other subsidiaries. Supplemental guarantor consolidated statement of comprehensive income USD million UBS AG (standalone) 1,2 UBS Switzerland AG (standalone) 1 Other subsidiaries 3 Elimination entries UBS AG (consolidated) For the year ended 31 December 2019 Comprehensive income attributable to shareholders Net profit / (loss) 4,221 1,944 1,689 (3,889) 3,965 Other comprehensive income Other comprehensive income that may be reclassified to the income statement Foreign currency translation, net of tax 5 150 39 (102) 92 Financial assets measured at fair value through other comprehensive income, net of tax 0 0 117 0 117 Cash flow hedges, net of tax 870 140 147 (15) 1,143 Total other comprehensive income that may be reclassified to the income statement, net of tax 875 290 303 (117) 1,351 Other comprehensive income that will not be reclassified to the income statement Defined benefit plans, net of tax (89) (6) (75) 0 (170) Own credit on financial liabilities designated at fair value, net of tax (392) (392) Total other comprehensive income that will not be reclassified to the income statement, net of tax (481) (6) (75) 0 (562) Total other comprehensive income 394 284 228 (117) 789 Total comprehensive income attributable to shareholders 4,616 2,228 1,917 (4,007) 4,754 Total comprehensive income attributable to non-controlling interests 2 2 Total comprehensive income 4,616 2,228 1,919 (4,007) 4,756 1 Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP. 2 Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in a decrease in Total comprehensive income attributable to shareholders for the year ended 31 December 2019 of USD 56 million, reflecting a decrease of USD 61 million in Net profit attributable to shareholders and a USD 6 million increase in Total other comprehensive income attributable to shareholders. 3 The ”Other subsidiaries“ column includes consolidated information for the significant sub-groups UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG, as well as standalone information for other subsidiaries. Supplemental guarantor consolidated statement of comprehensive income USD million UBS AG (standalone) 1,2 UBS Switzerland AG (standalone) 1 Other subsidiaries 3 Elimination entries UBS AG (consolidated) For the year ended 31 December 2018 Comprehensive income attributable to shareholders Net profit / (loss) 2,691 2,428 2,314 (3,327) 4,107 Other comprehensive income Other comprehensive income that may be reclassified to the income statement Foreign currency translation, net of tax (452) (109) 215 (169) (515) Financial assets measured at fair value through other comprehensive income, net of tax 0 0 (45) 0 (45) Cash flow hedges, net of tax (277) 2 19 (13) (269) Total other comprehensive income that may be reclassified to the income statement, net of tax (729) (107) 189 (182) (829) Other comprehensive income that will not be reclassified to the income statement Defined benefit plans, net of tax 89 (126) 212 0 175 Own credit on financial liabilities designated at fair value, net of tax 509 509 Total other comprehensive income that will not be reclassified to the income statement, net of tax 598 (126) 212 0 684 Total other comprehensive income (131) (233) 401 (182) (145) Total comprehensive income attributable to shareholders 2,560 2,195 2,715 (3,509) 3,961 Total comprehensive income attributable to non-controlling interests 5 5 Total comprehensive income 2,560 2,195 2,721 (3,509) 3,967 1 Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP. 2 Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in an increase in Total comprehensive income attributable to shareholders for the year ended 31 December 2018 of USD 438 million, reflecting an increase of USD 521 million in Net profit attributable to shareholders and a USD 83 million decrease in Total other comprehensive income attributable to shareholders. 3 The ”Other subsidiaries“ column includes consolidated information for the significant sub-groups UBS Americas Holding LLC, UBS Europe SE, UBS Asset Management AG and UBS Limited, as well as standalone information for other subsidiaries.
Schedule Of Condensed Balance Sheet [Table Text Block]	Supplemental guarantor consolidated balance sheet USD million UBS AG (standalone) 1 UBS Switzerland AG (standalone) 1 Other subsidiaries 2 Elimination entries UBS AG (consolidated) As of 31 December 2020 Assets Cash and balances at central banks 34,426 91,638 32,167 158,231 Loans and advances to banks 40,171 6,385 19,465 (50,678) 15,344 Receivables from securities financing transactions 56,568 4,026 43,350 (29,735) 74,210 Cash collateral receivables on derivative instruments 32,771 1,543 10,093 (11,671) 32,737 Loans and advances to customers 99,952 228,279 73,513 (20,767) 380,977 Other financial assets measured at amortized cost 8,411 8,084 13,368 (2,644) 27,219 Total financial assets measured at amortized cost 272,299 339,956 191,957 (115,495) 688,717 Financial assets at fair value held for trading 110,812 55 16,260 (1,634) 125,492 of which: assets pledged as collateral that may be sold or repledged by counterparties 54,468 1 6,247 (13,617) 47,098 Derivative financial instruments 154,313 6,342 44,005 (45,041) 159,618 Brokerage receivables 16,898 7,763 (2) 24,659 Financial assets at fair value not held for trading 46,198 13,068 36,444 (15,672) 80,038 Total financial assets measured at fair value through profit or loss 328,221 19,464 104,473 (62,350) 389,808 Financial assets measured at fair value through other comprehensive income 187 8,072 8,258 Investments in subsidiaries and associates 53,606 38 439 (52,526) 1,557 Property, equipment and software 6,999 1,335 3,975 (350) 11,958 Goodwill and intangible assets 217 6,234 28 6,480 Deferred tax assets 840 1 8,334 (1) 9,174 Other non-financial assets 6,641 2,063 854 (183) 9,374 Total assets 669,010 362,857 324,337 (230,878) 1,125,327 Liabilities Amounts due to banks 41,414 34,096 43,066 (107,527) 11,050 Payables from securities financing transactions 17,247 566 18,407 (29,899) 6,321 Cash collateral payables on derivative instruments 35,875 561 12,495 (11,618) 37,313 Customer deposits 98,441 293,371 112,372 23,745 527,929 Funding from UBS Group AG and its subsidiaries 3 53,979 53,979 Debt issued measured at amortized cost 75,658 9,687 3 3 85,351 Other financial liabilities measured at amortized cost 5,285 2,567 5,745 (3,175) 10,421 Total financial liabilities measured at amortized cost 327,898 340,848 192,088 (128,470) 732,364 Financial liabilities at fair value held for trading 28,800 335 5,989 (1,529) 33,595 Derivative financial instruments 156,192 5,593 44,359 (45,043) 161,102 Brokerage payables designated at fair value 25,045 13,704 (7) 38,742 Debt issued designated at fair value 58,986 935 (54) 59,868 Other financial liabilities designated at fair value 11,255 23,445 (2,927) 31,773 Total financial liabilities measured at fair value through profit or loss 280,279 5,927 88,433 (49,559) 325,080 Provisions 1,293 301 1,197 2,791 Other non-financial liabilities 2,173 987 3,907 (49) 7,018 Total liabilities 611,643 348,063 285,625 (178,078) 1,067,254 Equity attributable to shareholders 57,367 14,794 38,393 (52,800) 57,754 Equity attributable to non-controlling interests 319 319 Total equity 57,367 14,794 38,712 (52,800) 58,073 Total liabilities and equity 669,010 362,857 324,337 (230,878) 1,125,327 1 Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP. 2 The ”Other subsidiaries“ column includes consolidated information for the UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG significant sub-groups, as well as standalone information for other subsidiaries. 3 Represents funding from UBS Group AG to UBS AG. Supplemental guarantor consolidated balance sheet USD million UBS AG (standalone) 1,2 UBS Switzerland AG (standalone) 1 Other subsidiaries 3 Elimination entries UBS AG (consolidated) As of 31 December 2019 Assets Cash and balances at central banks 36,386 60,926 9,756 107,068 Loans and advances to banks 32,888 7,992 17,430 (45,931) 12,379 Receivables from securities financing transactions 56,946 12,536 42,534 (27,771) 84,245 Cash collateral receivables on derivative instruments 22,830 990 8,508 (9,038) 23,289 Loans and advances to customers 88,386 193,543 63,676 (17,612) 327,992 Other financial assets measured at amortized cost 5,723 8,168 11,448 (2,327) 23,012 Total financial assets measured at amortized cost 243,159 284,154 153,351 (102,679) 577,985 Financial assets at fair value held for trading 113,802 53 15,320 (1,479) 127,695 of which: assets pledged as collateral that may be sold or repledged by counterparties 58,599 0 5,386 (22,701) 41,285 Derivative financial instruments 118,708 4,251 29,782 (30,899) 121,843 Brokerage receivables 11,453 6,556 (1) 18,007 Financial assets at fair value not held for trading 49,525 6,701 41,908 (14,498) 83,636 Total financial assets measured at fair value through profit or loss 293,488 11,004 93,565 (46,877) 351,181 Financial assets measured at fair value through other comprehensive income 176 6,169 6,345 Investments in subsidiaries and associates 52,140 28 39 (51,156) 1,051 Property, equipment and software 7,318 1,144 3,749 (385) 11,826 Goodwill and intangible assets 222 6,212 35 6,469 Deferred tax assets 4 618 0 8,906 9,524 Other non-financial assets 5,060 1,770 857 (140) 7,547 Total assets 602,181 298,101 272,848 (201,202) 971,927 Liabilities Amounts due to banks 55,738 28,240 35,773 (113,181) 6,570 Payables from securities financing transactions 21,326 565 13,583 (27,696) 7,778 Cash collateral payables on derivative instruments 30,571 98 9,773 (9,027) 31,416 Customer deposits 85,954 239,226 86,550 38,861 450,591 Funding from UBS Group AG and its subsidiaries 5 47,866 47,866 Debt issued measured at amortized cost 54,317 8,583 5 (70) 62,835 Other financial liabilities measured at amortized cost 5,347 2,666 5,204 (2,844) 10,373 Total financial liabilities measured at amortized cost 301,119 279,379 150,888 (113,956) 617,429 Financial liabilities at fair value held for trading 25,292 383 6,233 (1,317) 30,591 Derivative financial instruments 117,597 4,046 30,089 (30,852) 120,880 Brokerage payables designated at fair value 25,358 11,877 (3) 37,233 Debt issued designated at fair value 65,677 952 (38) 66,592 Other financial liabilities designated at fair value 8,571 31,031 (3,445) 36,157 Total financial liabilities measured at fair value through profit or loss 242,495 4,429 80,184 (35,655) 291,452 Provisions 1,101 196 1,641 2,938 Other non-financial liabilities 4 1,657 931 3,602 21 6,211 Total liabilities 546,372 284,936 236,314 (149,591) 918,031 Equity attributable to shareholders 55,808 13,165 36,359 (51,611) 53,722 Equity attributable to non-controlling interests 174 174 Total equity 55,808 13,165 36,534 (51,611) 53,896 Total liabilities and equity 602,181 298,101 272,848 (201,202) 971,927 1 Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP. 2 Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in an increase in Investments in subsidiaries and associates as of 31 December 2019 of USD 929 million and an increase in Equity attributable to shareholders as of 31 December 2019 of USD 914 million. 3 The ”Other subsidiaries“ column includes consolidated information for the UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG significant sub-groups, as well as standalone information for other subsidiaries. 4 Comparative-period information has been restated. Refer to Note 1b for more information. 5 Represents funding from UBS Group AG to UBS AG.
Schedule Of Condensed Cash Flow Statement [Table Text Block]	Supplemental guarantor consolidated statement of cash flows USD million UBS AG 1 UBS Switzerland AG 1 Other subsidiaries 1 UBS AG (consolidated) For the year ended 31 December 2020 Net cash flow from / (used in) operating activities (14,883) 24,661 26,804 36,581 Cash flow from / (used in) investing activities Purchase of subsidiaries, associates and intangible assets 0 (3) (43) (46) Disposal of subsidiaries, associates and intangible assets 2 14 0 660 674 Purchase of property, equipment and software (714) (162) (697) (1,573) Disposal of property, equipment and software 361 0 3 364 Purchase of financial assets measured at fair value through other comprehensive income (77) 0 (6,213) (6,290) Disposal and redemption of financial assets measured at fair value through other comprehensive income 79 0 4,451 4,530 Net (purchase) / redemption of debt securities measured at amortized cost (3,021) 132 (1,277) (4,166) Net cash flow from / (used in) investing activities (3,357) (33) (3,117) (6,506) Cash flow from / (used in) financing activities Net short-term debt issued / (repaid) 23,828 17 0 23,845 Distributions paid on UBS AG shares (3,848) 0 0 (3,848) Repayment of lease liabilities (290) 0 (257) (547) Issuance of long-term debt, including debt issued designated at fair value 70,987 1,057 229 72,273 Repayment of long-term debt, including debt issued designated at fair value (82,930) (776) (118) (83,825) Funding from UBS Group AG and its subsidiaries 3 4,606 0 0 4,606 Net changes in non-controlling interests 0 0 (6) (6) Net activity related to group internal capital transactions and dividends 2,984 (1,307) (1,677) 0 Net cash flow from / (used in) financing activities 15,336 (1,009) (1,829) 12,498 Total cash flow Cash and cash equivalents at the beginning of the year 39,598 62,551 17,655 119,804 Net cash flow from / (used in) operating, investing and financing activities (2,905) 23,619 21,859 42,573 Effects of exchange rate differences on cash and cash equivalents 2,706 7,171 1,175 11,053 Cash and cash equivalents at the end of the year 4 39,400 93,342 40,689 173,430 of which: cash and balances at central banks 34,283 91,638 32,167 158,088 of which: loans and advances to banks 4,085 1,695 8,148 13,928 of which: money market paper 5 1,032 9 374 1,415 1 Cash flows generally represent a third-party view from a UBS AG consolidated perspective, except for Net activity related to group internal capital transactions and dividends. 2 Includes cash proceeds from the sale of the majority stake in Fondcenter AG of USD 426 million. Also includes dividends received from associates. 3 Represents funding from UBS Group AG to UBS AG. 4 Comprises balances with an original maturity of three months or less. USD 3,828 million of cash and cash equivalents were restricted. 5 Money market paper is included in the balance sheet under Financial assets at fair value held for trading, Financial assets measured at fair value through other comprehensive income, Financial assets at fair value not held for trading and Other financial assets measured at amortized cost. Supplemental guarantor consolidated statement of cash flows USD million UBS AG 1 UBS Switzerland AG 1 Other subsidiaries 1 UBS AG (consolidated) For the year ended 31 December 2019 Net cash flow from / (used in) operating activities 17,531 8,882 (7,608) 18,805 Cash flow from / (used in) investing activities Purchase of subsidiaries, associates and intangible assets (6) 0 (20) (26) Disposal of subsidiaries, associates and intangible assets 2 100 0 14 114 Purchase of property, equipment and software (628) (173) (600) (1,401) Disposal of property, equipment and software 10 0 1 11 Purchase of financial assets measured at fair value through other comprehensive income (10) 0 (3,414) (3,424) Disposal and redemption of financial assets measured at fair value through other comprehensive income 10 0 3,904 3,913 Net (purchase) / redemption of debt securities measured at amortized cost (1,045) 437 45 (562) Net cash flow from / (used in) investing activities (1,569) 264 (70) (1,374) Cash flow from / (used in) financing activities Net short-term debt issued / (repaid) (17,150) 0 0 (17,149) Distributions paid on UBS AG shares (3,250) 0 0 (3,250) Repayment of lease liabilities (262) 0 (234) (496) Issuance of long-term debt, including debt issued designated at fair value 58,437 621 142 59,199 Repayment of long-term debt, including debt issued designated at fair value (67,113) (752) (1,017) (68,883) Funding from UBS Group AG and its subsidiaries 3 5,848 0 0 5,848 Net changes in non-controlling interests 0 0 (8) (8) Net activity related to group internal capital transactions and dividends 3,569 (2,055) (1,514) 0 Net cash flow from / (used in) financing activities (19,922) (2,186) (2,630) (24,738) Total cash flow Cash and cash equivalents at the beginning of the year 42,895 54,757 28,201 125,853 Net cash flow from / (used in) operating, investing and financing activities (3,960) 6,961 (10,308) (7,307) Effects of exchange rate differences on cash and cash equivalents 664 833 (239) 1,258 Cash and cash equivalents at the end of the year 4 39,598 62,551 17,655 119,804 of which: cash and balances at central banks 36,275 60,926 9,756 106,957 of which: loans and advances to banks 2,697 1,127 7,493 11,317 of which: money market paper 5 626 498 406 1,530 1 Cash flows generally represent a third-party view from a UBS AG consolidated perspective, except for Net activity related to group internal capital transactions and dividends. 2 Includes dividends received from associates. 3 Represents funding from UBS Group AG to UBS AG. 4 Comprises balances with an original maturity of three months or less. USD 3,192 million of cash and cash equivalents were restricted. 5 Money market paper is included in the balance sheet under Financial assets at fair value held for trading, Financial assets measured at fair value through other comprehensive income, Financial assets at fair value not held for trading and Other financial assets measured at amortized cost. Supplemental guarantor consolidated statement of cash flows USD million UBS AG 2 UBS Switzerland AG 2 Other subsidiaries 2 UBS AG (consolidated) For the year ended 31 December 2018 1 Net cash flow from / (used in) operating activities (652) 14,887 13,509 27,744 Cash flow from / (used in) investing activities Purchase of subsidiaries, associates and intangible assets (124) (5) (158) (287) Disposal of subsidiaries, associates and intangible assets 3 97 0 40 137 Purchase of property, equipment and software (822) (170) (481) (1,473) Disposal of property, equipment and software 111 0 3 114 Purchase of financial assets measured at fair value through other comprehensive income (170) 0 (1,829) (1,999) Disposal and redemption of financial assets measured at fair value through other comprehensive income 20 15 1,325 1,361 Net (purchase) / redemption of debt securities measured at amortized cost (1,000) 2,111 (4,881) (3,770) Net cash flow from / (used in) investing activities (1,888) 1,951 (5,982) (5,918) Cash flow from / (used in) financing activities Net short-term debt issued / (repaid) (12,295) (3) 53 (12,245) Distributions paid on UBS AG shares (3,098) 0 0 (3,098) Issuance of long-term debt, including debt issued designated at fair value 53,294 872 560 54,726 Repayment of long-term debt, including debt issued designated at fair value (42,759) (812) (772) (44,344) Funding from UBS Group AG and its subsidiaries 4 5,956 0 0 5,956 Net changes in non-controlling interests 0 0 (31) (31) Net activity related to group internal capital transactions and dividends 3,000 (2,372) (628) 0 Net cash flow from / (used in) financing activities 4,098 (2,315) (820) 963 Total cash flow Cash and cash equivalents at the beginning of the year 41,570 40,961 22,256 104,787 Net cash flow from / (used in) operating, investing and financing activities 1,559 14,523 6,707 22,789 Effects of exchange rate differences on cash and cash equivalents (234) (726) (762) (1,722) Cash and cash equivalents at the end of the year 5 42,895 54,757 28,201 125,853 of which: cash and balances at central banks 36,248 53,490 18,530 108,268 of which: loans and advances to banks 4,849 1,249 9,354 15,452 of which: money market paper 6 1,798 18 318 2,133 1 Upon adoption of IFRS 9 on 1 January 2018, cash flows from certain financial assets previously classified as available-for-sale assets have been reclassified from investing to operating activities as the assets are accounted for at fair value through profit or loss effective 1 January 2018. Refer to Note 1c of the Annual Report 2018 for more information. 2 Cash flows generally represent a third-party view from a UBS AG consolidated perspective, except for Net activity related to group internal capital transactions and dividends. 3 Includes dividends received from associates. 4 Represents funding from UBS Group Funding (Switzerland) AG to UBS AG. 5 Comprises balances with an original maturity of three months or less. USD 5,245 million of cash and cash equivalents were restricted. 6 Money market paper is included in the balance sheet under Financial assets at fair value held for trading, Financial assets measured at fair value through other comprehensive income, Financial assets at fair value not held for trading and Other financial assets measured at amortized cost.

MD&A - Risk management and co_5

MD&A - Risk management and control - Credit Risk (Tables)	12 Months Ended
MD&A - Risk management and control - Credit Risk (Tables)	Dec. 31, 2020
Disclosure Of MDA Risk Management And Control Credit Risk [Line Items]
Internal UBS rating scale and mapping of external ratings [text block]	Internal UBS rating scale and mapping of external ratings Internal UBS rating 1-year PD range in % Description Moody’s Investors Service mapping Standard & Poor’s mapping Fitch mapping 0 and 1 0.00–0.02 Investment grade Aaa AAA AAA 2 0.02–0.05 Aa1 to Aa3 AA+ to AA– AA+ to AA– 3 0.05–0.12 A1 to A3 A+ to A– A+ to A– 4 0.12–0.25 Baa1 to Baa2 BBB+ to BBB BBB+ to BBB 5 0.25–0.50 Baa3 BBB– BBB– 6 0.50–0.80 Sub-investment grade Ba1 BB+ BB+ 7 0.80–1.30 Ba2 BB BB 8 1.30–2.10 Ba3 BB– BB– 9 2.10–3.50 B1 B+ B+ 10 3.50–6.00 B2 B B 11 6.00–10.00 B3 B– B– 12 10.00–17.00 Caa 13 >17 Ca to C CCC to C CCC to C Counterparty is in default Default Defaulted D D
UBS AG
Disclosure Of MDA Risk Management And Control Credit Risk [Line Items]
Internal UBS rating scale and mapping of external ratings [text block]	Internal UBS rating scale and mapping of external ratings Internal UBS rating 1-year PD range in % Description Moody’s Investors Service mapping Standard & Poor’s mapping Fitch mapping 0 and 1 0.00–0.02 Investment grade Aaa AAA AAA 2 0.02–0.05 Aa1 to Aa3 AA+ to AA– AA+ to AA– 3 0.05–0.12 A1 to A3 A+ to A– A+ to A– 4 0.12–0.25 Baa1 to Baa2 BBB+ to BBB BBB+ to BBB 5 0.25–0.50 Baa3 BBB– BBB– 6 0.50–0.80 Sub-investment grade Ba1 BB+ BB+ 7 0.80–1.30 Ba2 BB BB 8 1.30–2.10 Ba3 BB– BB– 9 2.10–3.50 B1 B+ B+ 10 3.50–6.00 B2 B B 11 6.00–10.00 B3 B– B– 12 10.00–17.00 Caa 13 >17 Ca to C CCC to C CCC to C Counterparty is in default Default Defaulted D D

MD&A - Risk management and co_6

MD&A - Risk management and control - Market Risk (Tables)	12 Months Ended
MD&A - Risk management and control - Market Risk (Tables)	Dec. 31, 2020
Disclosure MDARisk Management And Control Market Risk [Line Items]
Disclosure of detailed information about management value-at-risk [text block]	Management value-at-risk (1-day, 95% confidence, 5 years of historical data) of our business divisions and Group Functions by general market risk type 1 For the year ended 31.12.20 USD million Equity Interest rates Credit spreads Foreign exchange Commodities Min. 3 6 5 2 2 Max. 29 11 11 7 6 Average 10 8 7 4 4 31.12.20 6 8 8 3 3 Total management VaR, Group 8 31 13 11 Average (per business division and risk type) Global Wealth Management 0 2 1 1 0 1 1 0 0 Personal & Corporate Banking 0 0 0 0 0 0 0 0 0 Asset Management 0 0 0 0 0 0 0 0 0 Investment Bank 7 32 12 10 10 7 6 4 4 Group Functions 4 7 5 6 0 4 3 1 0 Diversification effect 2,3 (5) (8) 0 (4) (4) (1) 0 For the year ended 31.12.19 USD million Equity Interest rates Credit spreads Foreign exchange Commodities Min. 2 6 3 2 1 Max. 14 12 8 8 6 Average 6 9 5 3 2 31.12.19 5 8 5 3 3 Total management VaR, Group 6 18 11 9 Average (per business division and risk type) Global Wealth Management 0 1 1 1 0 1 1 0 0 Personal & Corporate Banking 0 0 0 0 0 0 0 0 0 Asset Management 0 0 0 0 0 0 0 0 0 Investment Bank 4 17 9 7 6 7 4 3 2 Group Functions 4 8 5 5 1 5 2 1 0 Diversification effect 2,3 (5) (4) (1) (4) (2) (1) 0 1 Statistics at individual levels may not be summed to deduce the corresponding aggregate figures. The minima and maxima for each level may well occur on different days, and likewise, the VaR for each business line or risk type, being driven by the extreme loss tail of the corresponding distribution of simulated profits and losses for that business line or risk type, may well be driven by different days in the historical time series, rendering invalid the simple summation of figures to arrive at the aggregate total. 2 Difference between the sum of the standalone VaR for the business divisions and Group Functions and the VaR for the Group as a whole. 3 As the minima and maxima for different business divisions and Group Functions occur on different days, it is not meaningful to calculate a portfolio diversification effect.
Disclosure of interest rate sensitivity - banking book [text block]	Interest rate risk – banking book USD million +1 bp Parallel up 1 Parallel down 1 Steepener 2 Flattener 3 Short-term up 4 Short-term down 5 CHF (5.2) (735.8) 832.3 (369.6) 225.5 (74.5) 79.0 EUR (0.9) (164.9) 163.2 (73.1) 29.9 (20.4) (4.7) GBP 0.2 48.7 (42.0) (31.7) 40.2 56.9 (47.5) USD (20.7) (4,612.8) 3,999.8 (395.5) (630.5) (2,188.9) 2,397.9 Other (0.6) (140.0) 3.6 20.8 (59.3) (105.7) 10.5 Total effect on economic value of equity as per Pillar 3 requirement as of 31.12.20 (27.2) (5,604.8) 4,956.9 (849.1) (394.1) (2,332.7) 2,435.2 Additional tier 1 (AT1) capital instruments 4.2 815.1 (868.4) (92.8) 272.8 573.6 (599.0) Total including AT1 capital instruments as of 31.12.20 (23.0) (4,789.7) 4,088.5 (942.0) (121.2) (1,759.1) 1,836.2 1 Rates across all tenors move by ±150 bps for Swiss franc, ±200 bps for euro and US dollar and ±250 bps for pound sterling. 2 Short-term rates decrease and long-term rates increase. 3 Short-term rates increase and long-term rates decrease. 4 Short-term rates increase more than long-term rates. 5 Short-term rates decrease more than long-term rates.
UBS AG
Disclosure MDARisk Management And Control Market Risk [Line Items]
Disclosure of detailed information about management value-at-risk [text block]	Management value-at-risk (1-day, 95% confidence, 5 years of historical data) of our business divisions and Group Functions by general market risk type 1 For the year ended 31.12.20 USD million Equity Interest rates Credit spreads Foreign exchange Commodities Min. 3 6 5 2 2 Max. 29 11 11 7 6 Average 10 8 7 4 4 31.12.20 6 8 8 3 3 Total management VaR, Group 8 31 13 11 Average (per business division and risk type) Global Wealth Management 0 2 1 1 0 1 1 0 0 Personal & Corporate Banking 0 0 0 0 0 0 0 0 0 Asset Management 0 0 0 0 0 0 0 0 0 Investment Bank 7 32 12 10 10 7 6 4 4 Group Functions 4 7 5 6 0 4 3 1 0 Diversification effect 2,3 (5) (8) 0 (4) (4) (1) 0 For the year ended 31.12.19 USD million Equity Interest rates Credit spreads Foreign exchange Commodities Min. 2 6 3 2 1 Max. 14 12 8 8 6 Average 6 9 5 3 2 31.12.19 5 8 5 3 3 Total management VaR, Group 6 18 11 9 Average (per business division and risk type) Global Wealth Management 0 1 1 1 0 1 1 0 0 Personal & Corporate Banking 0 0 0 0 0 0 0 0 0 Asset Management 0 0 0 0 0 0 0 0 0 Investment Bank 4 17 9 7 6 7 4 3 2 Group Functions 4 8 5 5 1 5 2 1 0 Diversification effect 2,3 (5) (4) (1) (4) (2) (1) 0 1 Statistics at individual levels may not be summed to deduce the corresponding aggregate figures. The minima and maxima for each level may well occur on different days, and likewise, the VaR for each business line or risk type, being driven by the extreme loss tail of the corresponding distribution of simulated profits and losses for that business line or risk type, may well be driven by different days in the historical time series, rendering invalid the simple summation of figures to arrive at the aggregate total. 2 Difference between the sum of the standalone VaR for the business divisions and Group Functions and the VaR for the Group as a whole. 3 As the minima and maxima for different business divisions and Group Functions occur on different days, it is not meaningful to calculate a portfolio diversification effect.
Disclosure of interest rate sensitivity - banking book [text block]	Interest rate risk – banking book USD million +1 bp Parallel up 1 Parallel down 1 Steepener 2 Flattener 3 Short-term up 4 Short-term down 5 CHF (5.2) (735.8) 832.3 (369.6) 225.5 (74.5) 79.0 EUR (0.9) (164.9) 163.2 (73.1) 29.9 (20.4) (4.7) GBP 0.2 48.7 (42.0) (31.7) 40.2 56.9 (47.5) USD (20.7) (4,612.8) 3,999.8 (395.5) (630.5) (2,188.9) 2,397.9 Other (0.6) (140.0) 3.6 20.8 (59.3) (105.7) 10.5 Total effect on economic value of equity as per Pillar 3 requirement as of 31.12.20 (27.2) (5,604.8) 4,956.9 (849.1) (394.1) (2,332.7) 2,435.2 Additional tier 1 (AT1) capital instruments 4.2 815.1 (868.4) (92.8) 272.8 573.6 (599.0) Total including AT1 capital instruments as of 31.12.20 (23.0) (4,789.7) 4,088.5 (942.0) (121.2) (1,759.1) 1,836.2 1 Rates across all tenors move by ±150 bps for Swiss franc, ±200 bps for euro and US dollar and ±250 bps for pound sterling. 2 Short-term rates decrease and long-term rates increase. 3 Short-term rates increase and long-term rates decrease. 4 Short-term rates increase more than long-term rates. 5 Short-term rates decrease more than long-term rates.

MD&A - Capital management (Tabl

MD&A - Capital management (Tables)	12 Months Ended
MD&A - Capital management (Tables)	Dec. 31, 2020
Disclosure Of MDA Capital Management [Line Items]
Disclosure of reconciliation IFRS equity to Swiss SRB CET1 capital [text block]	Reconciliation of IFRS equity to Swiss SRB common equity tier 1 capital USD million 31.12.20 31.12.19 1 Total IFRS equity 59,765 54,675 Equity attributable to non-controlling interests (319) (174) Defined benefit plans, net of tax (41) (9) Deferred tax assets recognized for tax loss carry-forwards (5,617) (6,121) Deferred tax assets on temporary differences, excess over threshold (5) (235) Goodwill, net of tax 2 (6,319) (6,178) Intangible assets, net of tax (296) (195) Compensation-related components (not recognized in net profit) (1,349) (1,717) Expected losses on advanced internal ratings-based portfolio less provisions (330) (495) Unrealized (gains) / losses from cash flow hedges, net of tax (2,321) (1,260) Own credit related to gains / losses on financial liabilities measured at fair value that existed at the balance sheet date 382 93 Own credit related to gains / losses on derivative financial instruments that existed at the balance sheet date (45) (46) Unrealized gains related to debt instruments at fair value through OCI, net of tax (152) (32) Prudential valuation adjustments (150) (104) Accruals for dividends to shareholders (1,314) (2,628) Capital reserve for potential share repurchases (2,000) Other 0 (40) Total common equity tier 1 capital 39,890 35,535 1 Refer to the “Accounting and financial reporting” and “Consolidated financial statements” sections of this report for information on the restatement of comparative information, where applicable. 2 Includes goodwill related to significant investments in financial institutions of USD 413 million as of 31 December 2020 (31 December 2019: USD 178 million) presented on the balance sheet line Investments in associates.
UBS AG
Disclosure Of MDA Capital Management [Line Items]
Disclosure of reconciliation IFRS equity to Swiss SRB CET1 capital [text block]	Reconciliation of IFRS equity to Swiss SRB common equity tier 1 capital (UBS Group AG vs UBS AG consolidated) As of 31.12.20 USD million UBS Group AG (consolidated) UBS AG (consolidated) Difference Total IFRS equity 59,765 58,073 1,691 Equity attributable to non-controlling interests (319) (319) 0 Defined benefit plans, net of tax (41) (41) 0 Deferred tax assets recognized for tax loss carry-forwards (5,617) (5,617) 0 Deferred tax assets on temporary differences, excess over threshold (5) (126) 121 Goodwill, net of tax (6,319) (6,319) 0 Intangible assets, net of tax (296) (296) 0 Compensation-related components (not recognized in net profit) (1,349) 0 (1,349) Expected losses on advanced internal ratings-based portfolio less provisions (330) (330) 0 Unrealized (gains) / losses from cash flow hedges, net of tax (2,321) (2,321) 0 Own credit related to gains / losses on financial liabilities measured at fair value that existed at the balance sheet date 382 382 0 Own credit related to gains / losses on derivative financial instruments that existed at the balance sheet date (45) (45) 0 Unrealized gains related to debt instruments at fair value through OCI, net of tax (152) (152) 0 Prudential valuation adjustments (150) (150) 0 Accruals for dividends to shareholders (1,314) (4,539) 3,225 Capital reserve for potential share repurchases (2,000) 0 (2,000) Other 0 (20) 20 Total common equity tier 1 capital 39,890 38,181 1,709

Share capital (Narrative) (Deta

Share capital (Narrative) (Detail) - CHF (SFr)	12 Months Ended
Share capital (Narrative) (Detail) - CHF (SFr)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Ordinary share capital
Shares issued	3,859,055,395	3,859,055,395	3,855,634,749	3,853,096,603
Par value of shares	SFr 0.1	SFr 0.1
Share capital	SFr 385,905,539.5
Conditional share capital
Additional shares that could have been issued to fund UBS's employee share option programs	121,705,830
Value of available shares to fund UBS employee share option programs	SFr 12,170,583
Additional conditional capital available for conversion rights and warrants granted in connection with the issuance of bonds or similar financial instruments	380,000,000
Value of additional conditional capital available for conversion rights and warrants granted in connection with the issuance of bonds or similar financial instruments	SFr 38,000,000
Authorized share capital
Authorized capital available to issue	0
UBS AG
Ordinary share capital
Shares issued	3,858,408,466	3,858,408,466
Par value of shares	SFr 0.1	SFr 0.1
Share capital	SFr 385,840,846.6
Conditional share capital
Additional conditional capital available for conversion rights and warrants granted in connection with the issuance of bonds or similar financial instruments	380,000,000
Value of additional conditional capital available for conversion rights and warrants granted in connection with the issuance of bonds or similar financial instruments	SFr 38,000,000
Authorized share capital
Authorized capital available to issue	0

Share repurchase program (Narra

Share repurchase program (Narrative) (Detail) shares in Millions, $ in Millions, SFr in Billions	12 Months Ended
	Dec. 31, 2020CHF (SFr)shares	Dec. 31, 2020USD ($)shares	Dec. 31, 2019CHF (SFr)shares	Dec. 31, 2019USD ($)shares
Share Repurchse Program [Line Items]
Shares aquired as part of the share repurchase program \| shares	31	31	69	69
Amount invested to aquire own registered shares as part of the share repurchase program \| $		$ 364		$ 806
2018-2021
Share Repurchse Program [Line Items]
Maximum amount intended for the purchase of own registered shares as part of the share repurchase program	SFr 2		SFr 2
2021-2024
Share Repurchse Program [Line Items]
Maximum amount intended for the purchase of own registered shares as part of the share repurchase program	SFr 4

Significant accounting polici_3

Significant accounting policies (Narrative) (Detail)	12 Months Ended
Significant accounting policies (Narrative) (Detail)	Dec. 31, 2020
Significant Accounting Policies [Line Items]
Date of authorisation for issue of financial statements	Feb. 25, 2021
Equity method of accounting, low end of range of voting interest (as a percent)	20.00%
Equity method of accounting, high end of range of voting interest (as a percent)	50.00%
Useful life, intangible assets other than goodwill	20 years
Minimum
Significant Accounting Policies [Line Items]
Criteria for hedge accounting effectiveness	80.00%
Maximum
Significant Accounting Policies [Line Items]
Criteria for hedge accounting effectiveness	125.00%
UBS AG [Member]
Significant Accounting Policies [Line Items]
Date of authorisation for issue of financial statements	Feb. 25, 2021
Equity method of accounting, low end of range of voting interest (as a percent)	20.00%
Equity method of accounting, high end of range of voting interest (as a percent)	50.00%
Useful life, intangible assets other than goodwill	20 years
UBS AG [Member] \| Minimum
Significant Accounting Policies [Line Items]
Criteria for hedge accounting effectiveness	80.00%
UBS AG [Member] \| Maximum
Significant Accounting Policies [Line Items]
Criteria for hedge accounting effectiveness	125.00%

Significant accounting polici_4

Significant accounting policies - Useful lives (Narrative) (Detail)	12 Months Ended
	Dec. 31, 2020
Properties, excluding land
Disclosure Of Property Equipment And Software [Line Items]
Useful life measured as period of time, property, plant and equipment	67 years
IT hardware and communication equipment
Disclosure Of Property Equipment And Software [Line Items]
Useful life measured as period of time, property, plant and equipment	7 years
Software
Disclosure Of Property Equipment And Software [Line Items]
Useful life measured as period of time, property, plant and equipment	10 years
Other machines and equipment
Disclosure Of Property Equipment And Software [Line Items]
Useful life measured as period of time, property, plant and equipment	10 years
Leased properties and leasehold improvements
Disclosure Of Property Equipment And Software [Line Items]
Useful life measured as period of time, property, plant and equipment	20 years
UBS AG \| Properties, excluding land
Disclosure Of Property Equipment And Software [Line Items]
Useful life measured as period of time, property, plant and equipment	67 years
UBS AG \| IT hardware and communication equipment
Disclosure Of Property Equipment And Software [Line Items]
Useful life measured as period of time, property, plant and equipment	7 years
UBS AG \| Software
Disclosure Of Property Equipment And Software [Line Items]
Useful life measured as period of time, property, plant and equipment	10 years
UBS AG \| Other machines and equipment
Disclosure Of Property Equipment And Software [Line Items]
Useful life measured as period of time, property, plant and equipment	10 years
UBS AG \| Leased properties and leasehold improvements
Disclosure Of Property Equipment And Software [Line Items]
Useful life measured as period of time, property, plant and equipment	20 years

Changes in accounting policie_2

Changes in accounting policies, comparability and adjustments (Narrative) (Detail)	12 Months Ended
	Dec. 31, 2020
Modification of deferred compensation awards
Changes In Accounting Policies [Line Items]
Description of nature of voluntary change in accounting policy	Modification of deferred compensation awards During 2020, UBS modified the terms of certain outstanding deferred compensation awards granted for performance years 2015 through 2019 by removing the requirement to provide future service for qualifying employees. These awards remain subject to forfeiture if certain non-vesting conditions are not satisfied. As a result, UBS recognized an expense of USD 359 million in the third quarter of 2020, of which USD 314 million was recorded within Variable compensation – performance awards, USD 24 million within Social security and USD 21 million within Other personnel expenses, with a USD 212 million increase in compensation-related liabilities for cash-settled awards and social security-related accruals, and a USD 147 million increase in share premium for equity-settled awards. The full year effect was an expense of approximately USD 280 million, of which USD 240 million is disclosed within Variable compensation – performance awards, USD 20 million within Social security and USD 20 million within Other personnel expenses, with increases of approximately USD 170 million in compensation-related liabilities for cash-settled awards and social security-related accruals and approximately USD 110 million in share premium for equity-settled awards. Outstanding deferred compensation awards granted to Group Executive Board members, those granted under the Long-Term Incentive Plan, as well as those granted to financial advisors in the US, were not affected by these changes.
Restatement of compensation-related liabilities
Changes In Accounting Policies [Line Items]
Description of nature of voluntary change in accounting policy	Restatement of compensation-related liabilities During 2020, UBS restated its balance sheet and statement of changes in equity as of 1 January 2018 to correct a USD 43 million liability understatement in connection with a legacy Global Wealth Management deferred compensation plan, with the effects presented in the table below. The restatement resulted from a correction of an actuarial calculation associated with compensation-related liabilities. The effects of the understatement were not material to prior-year financial statements; however, such effects would have been material to the quarterly reporting period in which the understatement was identified and therefore prior years were restated. The restatement had no effect on Net profit / (loss) or basic and diluted earnings per share for the current period or for any comparative periods.
Segment reporting
Changes In Accounting Policies [Line Items]
Description of nature of voluntary change in accounting policy	Segment reporting Effective from 1 January 2020, UBS no longer discloses a detailed cost breakdown by financial statement line item within its segment reporting disclosures provided in Note 2. The modified approach of presenting operating expenses for each division aligns the reporting with the way that UBS manages its cost base. This change has no effect on the income statement, or on the net profit of any business division.
Presentation of interest income and expense from financial instruments measured at fair value through profit or loss
Changes In Accounting Policies [Line Items]
Description of nature of voluntary change in accounting policy	Presentation of interest income and expense from financial instruments measured at fair value through profit or loss Effective from 1 January 2020, UBS presents interest income and interest expense from financial instruments measured at fair value through profit or loss on a net basis, in line with how UBS assesses and reports interest and in accordance with IFRS. This presentation change has no effect on Net interest income or on Net profit / (loss) attributable to shareholders. Prior periods have been aligned with this change in presentation. Further information about net interest income from financial instruments measured at fair value through profit or loss is provided in Note 3.
Adoption of hedge accounting requirements of IFRS 9, Financial instruments
Changes In Accounting Policies [Line Items]
Description of nature of change in accounting policy	Adoption of hedge accounting requirements of IFRS 9, Financial Instruments Effective from 1 January 2020, UBS has prospectively adopted the hedge accounting requirements of IFRS 9, Financial Instruments, for all of its existing hedge accounting programs, except for fair value hedges of portfolio interest rate risk, which, as permitted under IFRS 9, continue to be accounted for under IAS 39, Financial Instruments: Recognition and Measurement. The adoption of these requirements has not changed any of the hedge designations disclosed in the Annual Report 2019 with only minor amendments to hedge documentation and hedge effectiveness testing methodologies required to make them compliant with IFRS 9. The adoption had no financial effect on UBS’s financial statements. However, starting on 1 January 2020, UBS began to designate cross-currency swaps as Fair value hedges of foreign exchange risk related to debt instruments and utilized the cost of hedging approach introduced by IFRS 9.
UBS AG \| Modification of deferred compensation awards
Changes In Accounting Policies [Line Items]
Description of nature of voluntary change in accounting policy	Modification of deferred compensation awards During 2020, UBS AG modified the terms of certain outstanding deferred compensation awards granted for performance years 2015 through 2019 by removing the requirement to provide future service for qualifying employees. These awards remain subject to forfeiture if certain non-vesting conditions are not satisfied. As a result, UBS AG recognized an expense of USD 342 million in the third quarter of 2020, of which USD 303 million was recorded within Variable compensation – performance awards, USD 23 million within Social security and USD 16 million within Other personnel expenses, with a corresponding increase of USD 342 million in liabilities. The full year effect was an expense of approximately USD 270 million, of which USD 240 million is disclosed within Variable compensation – performance awards, USD 20 million within Social security and USD 10 million within Other personnel expenses, with an increase of approximately USD 270 million in liabilities. Outstanding deferred compensation awards granted to Group Executive Board members, those granted under the Long-Term Incentive Plan, as well as those granted to financial advisors in the US, were not affected by these changes.
UBS AG \| Restatement of compensation-related liabilities
Changes In Accounting Policies [Line Items]
Description of nature of voluntary change in accounting policy	Restatement of compensation-related liabilities During 2020, UBS AG restated its balance sheet and statement of changes in equity as of 1 January 2018 to correct a USD 43 million liability understatement in connection with a legacy Global Wealth Management deferred compensation plan, with the effects presented in the table below. The restatement resulted from a correction of an actuarial calculation associated with compensation-related liabilities. The effects of the understatement were not material to prior-year financial statements; however, such effects would have been material to the quarterly reporting period in which the understatement was identified and therefore prior years were restated. The restatement had no effect on Net profit / (loss) for the current period or for any comparative periods.
UBS AG \| Segment reporting
Changes In Accounting Policies [Line Items]
Description of nature of voluntary change in accounting policy	Segment reporting Effective from 1 January 2020, UBS AG no longer discloses a detailed cost breakdown by financial statement line item within its segment reporting disclosures provided in Note 2. The modified approach of presenting operating expenses for each division aligns the reporting with the way that UBS AG manages its cost base. This change has no effect on the income statement, or on the net profit of any business division.
UBS AG \| Presentation of interest income and expense from financial instruments measured at fair value through profit or loss
Changes In Accounting Policies [Line Items]
Description of nature of voluntary change in accounting policy	Presentation of interest income and expense from financial instruments measured at fair value through profit or loss Effective from 1 January 2020, UBS AG presents interest income and interest expense from financial instruments measured at fair value through profit or loss on a net basis, in line with how UBS AG assesses and reports interest and in accordance with IFRS. This presentation change has no effect on Net interest income or on Net profit / (loss) attributable to shareholders. Prior periods have been aligned with this change in presentation. Further information about net interest income from financial instruments measured at fair value through profit or loss is provided in Note 3.
UBS AG \| Adoption of hedge accounting requirements of IFRS 9, Financial instruments
Changes In Accounting Policies [Line Items]
Description of nature of change in accounting policy	Adoption of hedge accounting requirements of IFRS 9, Financial Instruments Effective from 1 January 2020, UBS AG has prospectively adopted the hedge accounting requirements of IFRS 9, Financial Instruments, for all of its existing hedge accounting programs, except for fair value hedges of portfolio interest rate risk, which, as permitted under IFRS 9, continue to be accounted for under IAS 39, Financial Instruments: Recognition and Measurement. The adoption of these requirements has not changed any of the hedge designations disclosed in the Annual Report 2019 with only minor amendments to hedge documentation and hedge effectiveness testing methodologies required to make them compliant with IFRS 9. The adoption had no financial effect on UBS AG’s financial statements. However, starting on 1 January 2020, UBS AG began to designate cross-currency swaps as Fair value hedges of foreign exchange risk related to debt instruments and utilized the cost of hedging approach introduced by IFRS 9.

Significant accounting polici_5

Significant accounting policies - Modification of deferred compensation awards (Narrative) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018	Jan. 01, 2018
Disclosure Of Modification Of Deferred Compensation Awards [Line Items]
Total personnel expenses	$ 17,224		$ 16,084		$ 16,132
Variable compensation - performance awards	3,209	[1]	2,755		2,995
Social security	899	[1]	799		791
Other personnel expenses	561	[1]	555		654
Compensation-related liabilities	7,468	[2],[3]	6,855	[2],[3]	7,321	$ 7,916
Share-based compensation expensed in the income statement	691		619		676
Increase (decrease) due to modification of deferred compensation awards
Disclosure Of Modification Of Deferred Compensation Awards [Line Items]
Total personnel expenses	280
Variable compensation - performance awards	240
Social security	20
Other personnel expenses	20
Compensation-related liabilities	170
Increase (decrease) due to modification of deferred compensation awards, as of third quarter 2020
Disclosure Of Modification Of Deferred Compensation Awards [Line Items]
Total personnel expenses	359
Variable compensation - performance awards	314
Social security	24
Other personnel expenses	21
Compensation-related liabilities	212
Share premium
Disclosure Of Modification Of Deferred Compensation Awards [Line Items]
Share-based compensation expensed in the income statement	691	[4]	619		676
Share premium \| Increase (decrease) due to modification of deferred compensation awards
Disclosure Of Modification Of Deferred Compensation Awards [Line Items]
Share-based compensation expensed in the income statement	110
Share premium \| Increase (decrease) due to modification of deferred compensation awards, as of third quarter 2020
Disclosure Of Modification Of Deferred Compensation Awards [Line Items]
Share-based compensation expensed in the income statement	147
UBS AG
Disclosure Of Modification Of Deferred Compensation Awards [Line Items]
Total personnel expenses	14,686		13,801		13,992
Variable compensation - performance awards	2,953	[5]	2,545		2,794
Social security	704	[5]	627		629
Other personnel expenses	466	[5]	461		549
Compensation-related liabilities	4,776	[2]	$ 4,339	[2]	$ 4,688	$ 5,079
UBS AG \| Increase (decrease) due to modification of deferred compensation awards
Disclosure Of Modification Of Deferred Compensation Awards [Line Items]
Total personnel expenses	270
Variable compensation - performance awards	240
Social security	20
Other personnel expenses	10
Compensation-related liabilities	270
UBS AG \| Increase (decrease) due to modification of deferred compensation awards, as of third quarter 2020
Disclosure Of Modification Of Deferred Compensation Awards [Line Items]
Total personnel expenses	342
Variable compensation - performance awards	303
Social security	23
Other personnel expenses	16
Compensation-related liabilities	$ 342

[1]	During 2020, UBS modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees, resulting in an expense of approximately USD 280 million, of which USD 240 million is disclosed within Variable compensation – performance awards, USD 20 million within Social security and USD 20 million within Other personnel expenses. Refer to Note 1b for more information.
[2]	Comparative-period information has been restated. Refer to Note 1b for more information.
[3]	In 2020, UBS modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees. Refer to Note 1b for more information
[4]	During 2020, UBS modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees, resulting in an increase of approximately USD 110 million in share premium for equity-settled awards. Refer to Note 1b for more information.
[5]	During 2020, UBS AG modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees, resulting in an expense of approximately USD 270 million, of which USD 240 million is disclosed within Variable compensation – performance awards, USD 20 million within Social security and USD 10 million within Other personnel expenses. Refer to Note 1b for more information.

Significant accounting polici_6

Significant accounting policies - Restatement of compensation-related liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018		Jan. 01, 2018	Dec. 31, 2017
Disclosure Of Restatement Of Compensation-related Liabilities [Line Items]
Deferred tax assets	$ 9,212	[1]	$ 9,548	[1],[2]	$ 10,116		$ 10,195
Total assets	1,125,765		972,194	[3]	958,500	[3]	938,799
Other non-financial liabilities	9,854		8,837		9,065		9,486
of which: Compensation-related liabilities	7,468	[4],[5]	6,855	[4],[5]	7,321		7,916
of which: financial advisor compensation plans	1,500	[4]	1,506	[4]	1,501
Total liabilities	1,066,000		917,519		905,429		886,894
Retained earnings	38,776		34,122		30,416		25,357
Equity attributable to shareholders	59,445		54,501		52,896		51,847
Total equity before the adoption of IFRIC 23					53,071		51,906	$ 51,906
Total equity	59,765		54,675	[6]	53,060
Total liabilities and equity	1,125,765		972,194		958,500		938,799
As reported
Disclosure Of Restatement Of Compensation-related Liabilities [Line Items]
Deferred tax assets			9,537		10,105		10,184
Total assets			972,183		958,489		938,788
Other non-financial liabilities			8,794		9,022		9,443
of which: Compensation-related liabilities			6,812		7,278		7,873
of which: financial advisor compensation plans			1,463		1,458
Total liabilities			917,476		905,386		886,851
Retained earnings			34,154		30,448		25,389
Equity attributable to shareholders			54,533		52,928		51,879
Total equity before the adoption of IFRIC 23					53,103		51,938
Total equity			54,707
Total liabilities and equity			972,183		958,489		938,788
Effect
Disclosure Of Restatement Of Compensation-related Liabilities [Line Items]
Deferred tax assets			11		11		11
Total assets			11		11		11
Other non-financial liabilities			43		43		43
of which: Compensation-related liabilities			43		43		43
of which: financial advisor compensation plans			43		43
Total liabilities			43		43		43
Retained earnings			(32)		(32)		(32)
Equity attributable to shareholders			(32)		(32)		(32)
Total equity before the adoption of IFRIC 23					(32)		(32)
Total equity			(32)
Total liabilities and equity			11		11		11
UBS AG
Disclosure Of Restatement Of Compensation-related Liabilities [Line Items]
Deferred tax assets	9,174	[1]	9,524	[1],[7]	10,077		10,132
Total assets	1,125,327		971,927	[3]	958,066	[3]	939,539
Other non-financial liabilities	7,018		6,211	[7]	6,318		6,542
of which: Compensation-related liabilities	4,776	[4]	4,339	[4]	4,688		5,079
of which: financial advisor compensation plans	1,497	[4]	1,502	[4]	1,497
Total liabilities	1,067,254		918,031		905,667		888,143
Retained earnings	25,251		23,419		23,285		21,614
Equity attributable to shareholders	57,754		53,722		52,224		51,338
Total equity before the adoption of IFRIC 23					52,400		51,397	$ 51,397
Total equity	58,073		53,896		52,389
Total liabilities and equity	$ 1,125,327		971,927		958,066		939,539
UBS AG \| As reported
Disclosure Of Restatement Of Compensation-related Liabilities [Line Items]
Deferred tax assets			9,513		10,066		10,121
Total assets			971,916		958,055		939,528
Other non-financial liabilities			6,168		6,275		6,499
of which: Compensation-related liabilities			4,296		4,645		5,036
of which: financial advisor compensation plans			1,459		1,454
Total liabilities			917,988		905,624		888,100
Retained earnings			23,451		23,317		21,646
Equity attributable to shareholders			53,754		52,256		51,370
Total equity before the adoption of IFRIC 23					52,432		51,429
Total equity			53,928
Total liabilities and equity			971,916		958,055		939,528
UBS AG \| Effect
Disclosure Of Restatement Of Compensation-related Liabilities [Line Items]
Deferred tax assets			11		11		11
Total assets			11		11		11
Other non-financial liabilities			43		43		43
of which: Compensation-related liabilities			43		43		43
of which: financial advisor compensation plans			43		43
Total liabilities			43		43		43
Retained earnings			(32)		(32)		(32)
Equity attributable to shareholders			(32)		(32)		(32)
Total equity before the adoption of IFRIC 23					(32)		(32)
Total equity			(32)
Total liabilities and equity			$ 11		$ 11		$ 11

[1]	Less deferred tax liabilities as applicable.
[2]	Comparative-period information has been restated. Refer to Note 1b for more information
[3]	Information has been restated where applicable. Refer to Note 1b for more information.
[4]	Comparative-period information has been restated. Refer to Note 1b for more information.
[5]	In 2020, UBS modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees. Refer to Note 1b for more information
[6]	Refer to the “Accounting and financial reporting” and “Consolidated financial statements” sections of this report for information on the restatement of comparative information, where applicable
[7]	Comparative-period information has been restated. Refer to Note 1b for more information.

IFRSs and interpretations to be

IFRSs and interpretations to be adopted and other adjustments (Narrative) (Detail)	12 Months Ended
	Dec. 31, 2020
Amendments to IAS 39, IFRS 9 and IFRS 7 (Interest Rate Benchmark Reform - Phase 2)
Description of Expected Impact of Initial Application of New Standards or Interpretations [Line Items]
Date by which application of new IFRS is required	Jan. 1, 2021
Discussion of impact that initial application of new IFRS is expected to have on financial statements	UBS will adopt these amendments on 1 January 2021 and does not expect a material effect on the Group’s financial statements.
IFRS 17, Insurance Contracts
Description of Expected Impact of Initial Application of New Standards or Interpretations [Line Items]
Date by which application of new IFRS is required	Jan. 1, 2023
Discussion of impact that initial application of new IFRS is expected to have on financial statements	UBS is assessing the standard, but does not expect it to have a material effect on the Group’s financial statements.
Annual Improvements to IFRSs 2018-2020 Cycle and narrow-scope amendments to IFRS 3, Business Combinations, and IAS 37, Provisions, Contingent Liabilities and Contingent Assets
Description of Expected Impact of Initial Application of New Standards or Interpretations [Line Items]
Date by which application of new IFRS is required	Jan. 1, 2022
Discussion of impact that initial application of new IFRS is expected to have on financial statements	UBS is currently assessing the effect on the Group’s financial statements.
Amendments to IAS 1, Presentation of Financial Statements, IFRS Practice Statement 2, Making Materiality Judgements and IAS 8, Accounting Policies, Changes in Accounting Estimates and Errors
Description of Expected Impact of Initial Application of New Standards or Interpretations [Line Items]
Date by which application of new IFRS is required	Jan. 1, 2023
Discussion of impact that initial application of new IFRS is expected to have on financial statements	UBS is currently assessing the effect on the Group’s financial statements.
UBS AG \| Amendments to IAS 39, IFRS 9 and IFRS 7 (Interest Rate Benchmark Reform - Phase 2)
Description of Expected Impact of Initial Application of New Standards or Interpretations [Line Items]
Date by which application of new IFRS is required	Jan. 1, 2021
Discussion of impact that initial application of new IFRS is expected to have on financial statements	UBS AG will adopt these amendments on 1 January 2021 and does not expect a material effect on its financial statements.
UBS AG \| IFRS 17, Insurance Contracts
Description of Expected Impact of Initial Application of New Standards or Interpretations [Line Items]
Date by which application of new IFRS is required	Jan. 1, 2023
Discussion of impact that initial application of new IFRS is expected to have on financial statements	UBS AG is assessing the standard, but does not expect it to have a material effect on its financial statements.
UBS AG \| Annual Improvements to IFRSs 2018-2020 Cycle and narrow-scope amendments to IFRS 3, Business Combinations, and IAS 37, Provisions, Contingent Liabilities and Contingent Assets
Description of Expected Impact of Initial Application of New Standards or Interpretations [Line Items]
Date by which application of new IFRS is required	Jan. 1, 2022
Discussion of impact that initial application of new IFRS is expected to have on financial statements	UBS AG is currently assessing the effect on its financial statements.
UBS AG \| Amendments to IAS 1, Presentation of Financial Statements, IFRS Practice Statement 2, Making Materiality Judgements and IAS 8, Accounting Policies, Changes in Accounting Estimates and Errors
Description of Expected Impact of Initial Application of New Standards or Interpretations [Line Items]
Date by which application of new IFRS is required	Jan. 1, 2023
Discussion of impact that initial application of new IFRS is expected to have on financial statements	UBS AG is currently assessing the effect on its financial statements.

Segment reporting (Narrative) (

Segment reporting (Narrative) (Detail)	12 Months Ended
Segment reporting (Narrative) (Detail)	Dec. 31, 2020
Disclosure Of Operating Segments [Line Items]
Number of business divisions	4
UBS AG
Disclosure Of Operating Segments [Line Items]
Number of business divisions	4

Segment reporting (Detail)

Segment reporting (Detail) - USD ($) $ in Millions	12 Months Ended
Segment reporting (Detail) - USD ($) $ in Millions	Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018		Jan. 01, 2018
Disclosure Of Operating Segments [Line Items]
Net interest income	$ 5,862		$ 4,501		$ 5,048
Non-interest income	27,222	[1]	24,467		25,283
Income	33,084		28,967		30,330
Credit loss (expense) / release	(694)		(78)		(118)
Total operating income	32,390		28,889	[2]	30,213	[2]
Total operating expenses	24,235		23,312		24,222
Operating profit / (loss) before tax	8,155		5,577		5,991
Tax expense / (benefit)	1,583		1,267		1,468
Net profit / (loss)	6,572		4,310		4,522
Additional information
Total assets	1,125,765		972,194	[3]	958,500	[3]	$ 938,799
Additions to non-current assets	2,847		5,297		1,975
Clearstream Fund Centre AG
Additional information
Gains (losses) on the sale of subsidiaries	631
Global Wealth Management
Disclosure Of Operating Segments [Line Items]
Net interest income	4,027		3,947		4,101
Non-interest income	13,107	[1]	12,426		12,700
Income	17,134		16,373		16,800
Credit loss (expense) / release	(88)		(20)		(15)
Total operating income	17,045		16,353		16,785
Total operating expenses	13,026		12,955		13,531
Operating profit / (loss) before tax	4,019		3,397		3,254
Additional information
Total assets	367,714		309,766	[3]	313,737	[3]
Additions to non-current assets	5		68		196
Global Wealth Management \| Clearstream Fund Centre AG
Additional information
Gains (losses) on the sale of subsidiaries	60
Personal & Corporate Banking
Disclosure Of Operating Segments [Line Items]
Net interest income	2,049		1,992		2,049
Non-interest income	1,858	[1]	1,744		2,168
Income	3,908		3,736		4,217
Credit loss (expense) / release	(257)		(21)		(56)
Total operating income	3,651		3,715		4,161
Total operating expenses	2,392		2,274		2,365
Operating profit / (loss) before tax	1,259		1,441		1,796
Additional information
Total assets	231,657		209,405	[3]	200,703	[3]
Additions to non-current assets	12		10		23
Asset Management
Disclosure Of Operating Segments [Line Items]
Net interest income	(17)		(25)		(29)
Non-interest income	2,993	[1]	1,962		1,881
Income	2,975		1,938		1,852
Credit loss (expense) / release	(2)		0		0
Total operating income	2,974		1,938		1,852
Total operating expenses	1,519		1,406		1,426
Operating profit / (loss) before tax	1,455		532		426
Additional information
Total assets	28,589		34,565	[3]	28,140	[3]
Additions to non-current assets	385		0		1
Asset Management \| Clearstream Fund Centre AG
Additional information
Gains (losses) on the sale of subsidiaries	571
Investment Bank
Disclosure Of Operating Segments [Line Items]
Net interest income	284		(669)		(459)
Non-interest income	9,235	[1]	7,968		8,538
Income	9,519		7,299		8,079
Credit loss (expense) / release	(305)		(30)		(38)
Total operating income	9,214		7,269		8,041
Total operating expenses	6,732		6,485		6,554
Operating profit / (loss) before tax	2,482		784		1,486
Additional information
Total assets	369,683		315,855	[3]	302,253	[3]
Additions to non-current assets	150		1		89
Group Functions
Disclosure Of Operating Segments [Line Items]
Net interest income	(481)		(744)		(613)
Non-interest income	30	[1]	367		(4)
Income	(452)		(378)		(617)
Credit loss (expense) / release	(42)		(7)		(8)
Total operating income	(494)		(385)		(626)
Total operating expenses	567		192		346
Operating profit / (loss) before tax	(1,060)		(577)		(971)
Additional information
Total assets	128,122		102,603	[3]	113,667	[3]
Additions to non-current assets	2,294		5,217		1,666
UBS AG
Disclosure Of Operating Segments [Line Items]
Net interest income	5,788		4,415		4,971
Non-interest income	27,686	[4]	24,970		25,788
Income	33,474		29,385		30,759
Credit loss (expense) / release	(695)		(78)		(117)
Total operating income	32,780		29,307	[2]	30,642	[2]
Total operating expenses	25,081		24,138		25,184
Operating profit / (loss) before tax	7,699		5,169		5,458
Tax expense / (benefit)	1,488		1,198		1,345
Net profit / (loss)	6,211		3,971		4,113
Additional information
Total assets	1,125,327		971,927	[3]	958,066	[3]	$ 939,539
Additions to non-current assets	2,524		5,014		1,757
UBS AG \| Clearstream Fund Centre AG
Additional information
Gains (losses) on the sale of subsidiaries	631
UBS AG \| Global Wealth Management
Disclosure Of Operating Segments [Line Items]
Net interest income	4,027		3,947		4,101
Non-interest income	13,107	[4]	12,426		12,700
Income	17,134		16,373		16,801
Credit loss (expense) / release	(88)		(20)		(15)
Total operating income	17,046		16,353		16,786
Total operating expenses	13,080		13,018		13,574
Operating profit / (loss) before tax	3,965		3,335		3,212
Additional information
Total assets	367,714		309,766	[3]	313,737	[3]
Additions to non-current assets	5		68		196
UBS AG \| Global Wealth Management \| Clearstream Fund Centre AG
Additional information
Gains (losses) on the sale of subsidiaries	60
UBS AG \| Personal & Corporate Banking
Disclosure Of Operating Segments [Line Items]
Net interest income	2,049		1,993		2,049
Non-interest income	1,859	[4]	1,745		2,169
Income	3,908		3,737		4,218
Credit loss (expense) / release	(257)		(21)		(56)
Total operating income	3,651		3,717		4,162
Total operating expenses	2,390		2,274		2,363
Operating profit / (loss) before tax	1,261		1,443		1,799
Additional information
Total assets	231,710		209,512	[3]	200,767	[3]
Additions to non-current assets	12		10		23
UBS AG \| Asset Management
Disclosure Of Operating Segments [Line Items]
Net interest income	(17)		(25)		(29)
Non-interest income	2,993	[4]	1,962		1,881
Income	2,975		1,938		1,852
Credit loss (expense) / release	(2)		0		0
Total operating income	2,974		1,938		1,852
Total operating expenses	1,520		1,407		1,427
Operating profit / (loss) before tax	1,454		531		425
Additional information
Total assets	28,266		34,565	[3]	28,140	[3]
Additions to non-current assets	385		0		1
UBS AG \| Asset Management \| Clearstream Fund Centre AG
Additional information
Gains (losses) on the sale of subsidiaries	571
UBS AG \| Investment Bank
Disclosure Of Operating Segments [Line Items]
Net interest income	284		(669)		(459)
Non-interest income	9,224	[4]	7,967		8,539
Income	9,508		7,298		8,080
Credit loss (expense) / release	(305)		(30)		(38)
Total operating income	9,203		7,268		8,042
Total operating expenses	6,762		6,515		6,600
Operating profit / (loss) before tax	2,441		753		1,442
Additional information
Total assets	369,778		316,058	[3]	302,434	[3]
Additions to non-current assets	150		1		89
UBS AG \| Group Functions
Disclosure Of Operating Segments [Line Items]
Net interest income	(555)		(831)		(690)
Non-interest income	504	[4]	869		499
Income	(52)		38		(191)
Credit loss (expense) / release	(42)		(7)		(8)
Total operating income	(94)		31		(199)
Total operating expenses	1,329		925		1,220
Operating profit / (loss) before tax	(1,423)		(893)		(1,419)
Additional information
Total assets	127,858		102,028	[3]	112,988	[3]
Additions to non-current assets	$ 1,971		$ 4,935		$ 1,449

[1]	Includes a USD 631 million net gain on the sale of a majority stake in Fondcenter AG, of which USD 571 million was recognized in Asset Management and USD 60 million was recognized in Global Wealth Management. Refer to Note 29 for more information
[2]	Effective as of 1 January 2020, the Investment Bank was realigned into two new business lines, Global Banking and Global Markets, which affects how the business is managed and therefore the allocation of operating income to the regions. The presentation of prior-year information reflects the new regional management structure of the Investment Bank.
[3]	Information has been restated where applicable. Refer to Note 1b for more information.
[4]	Includes a USD 631 million net gain on the sale of a majority stake in Fondcenter AG, of which USD 571 million was recognized in Asset Management and USD 60 million was recognized in Global Wealth Management. Refer to Note 29 for more information

Segment reporting by geograph_2

Segment reporting by geographic location (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019		Dec. 31, 2018
Disclosure Of Geographical Areas [Line Items]
Total operating income	$ 32,390	$ 28,889	[1]	$ 30,213	[1]
Total operating income (Share %)	100.00%	100.00%	[1]	100.00%	[1]
Total non-current assets	$ 21,100	$ 20,300		$ 17,100
Total non-current assets (Share %)	100.00%	100.00%		100.00%
Americas
Disclosure Of Geographical Areas [Line Items]
Total operating income	$ 13,000	$ 12,000	[1]	$ 12,600	[1]
Total operating income (Share %)	40.00%	42.00%	[1]	42.00%	[1]
Total non-current assets	$ 9,000	$ 8,900		$ 7,400
Total non-current assets (Share %)	42.00%	44.00%		43.00%
of which: USA
Disclosure Of Geographical Areas [Line Items]
Total operating income	$ 11,700	$ 10,900	[1]	$ 11,500	[1]
Total operating income (Share %)	36.00%	38.00%	[1]	38.00%	[1]
Total non-current assets	$ 8,400	$ 8,500		$ 7,000
Total non-current assets (Share %)	40.00%	42.00%		41.00%
Asia Pacific
Disclosure Of Geographical Areas [Line Items]
Total operating income	$ 6,000	$ 4,700	[1]	$ 4,900	[1]
Total operating income (Share %)	18.00%	16.00%	[1]	16.00%	[1]
Total non-current assets	$ 1,500	$ 1,400		$ 900
Total non-current assets (Share %)	7.00%	7.00%		5.00%
Europe, Middle East and Africa (excluding Switzerland)
Disclosure Of Geographical Areas [Line Items]
Total operating income	$ 6,500	$ 5,800	[1]	$ 6,200	[1]
Total operating income (Share %)	20.00%	20.00%	[1]	21.00%	[1]
Total non-current assets	$ 3,000	$ 3,000		$ 2,000
Total non-current assets (Share %)	14.00%	15.00%		12.00%
Switzerland
Disclosure Of Geographical Areas [Line Items]
Total operating income	$ 6,900	$ 6,700	[1]	$ 7,100	[1]
Total operating income (Share %)	21.00%	23.00%	[1]	24.00%	[1]
Total non-current assets	$ 7,600	$ 7,100		$ 6,800
Total non-current assets (Share %)	36.00%	35.00%		40.00%
Global
Disclosure Of Geographical Areas [Line Items]
Total operating income	$ 100	$ (300)	[1]	$ (600)	[1]
Total operating income (Share %)	0.00%	(1.00%)	[1]	(2.00%)	[1]
Total non-current assets	$ 0	$ 0		$ 0
Total non-current assets (Share %)	0.00%	0.00%		0.00%
UBS AG
Disclosure Of Geographical Areas [Line Items]
Total operating income	$ 32,780	$ 29,307	[1]	$ 30,642	[1]
Total operating income (Share %)	100.00%	100.00%	[1]	100.00%	[1]
Total non-current assets	$ 20,000	$ 19,300		$ 16,200
Total non-current assets (Share %)	100.00%	100.00%		100.00%
UBS AG \| Americas
Disclosure Of Geographical Areas [Line Items]
Total operating income	$ 13,000	$ 12,000	[1]	$ 12,600	[1]
Total operating income (Share %)	40.00%	41.00%	[1]	41.00%	[1]
Total non-current assets	$ 9,000	$ 8,900		$ 7,400
Total non-current assets (Share %)	45.00%	46.00%		46.00%
UBS AG \| of which: USA
Disclosure Of Geographical Areas [Line Items]
Total operating income	$ 11,700	$ 10,900	[1]	$ 11,500	[1]
Total operating income (Share %)	36.00%	37.00%	[1]	37.00%	[1]
Total non-current assets	$ 8,400	$ 8,500		$ 7,000
Total non-current assets (Share %)	42.00%	44.00%		43.00%
UBS AG \| Asia Pacific
Disclosure Of Geographical Areas [Line Items]
Total operating income	$ 6,000	$ 4,700	[1]	$ 4,900	[1]
Total operating income (Share %)	18.00%	16.00%	[1]	16.00%	[1]
Total non-current assets	$ 1,400	$ 1,300		$ 800
Total non-current assets (Share %)	7.00%	7.00%		5.00%
UBS AG \| Europe, Middle East and Africa (excluding Switzerland)
Disclosure Of Geographical Areas [Line Items]
Total operating income	$ 6,500	$ 5,800	[1]	$ 6,200	[1]
Total operating income (Share %)	20.00%	20.00%	[1]	20.00%	[1]
Total non-current assets	$ 2,700	$ 2,600		$ 1,800
Total non-current assets (Share %)	14.00%	13.00%		11.00%
UBS AG \| Switzerland
Disclosure Of Geographical Areas [Line Items]
Total operating income	$ 6,900	$ 6,700	[1]	$ 7,100	[1]
Total operating income (Share %)	21.00%	23.00%	[1]	23.00%	[1]
Total non-current assets	$ 6,900	$ 6,500		$ 6,200
Total non-current assets (Share %)	34.00%	34.00%		38.00%
UBS AG \| Global
Disclosure Of Geographical Areas [Line Items]
Total operating income	$ 500	$ 100	[1]	$ (200)	[1]
Total operating income (Share %)	2.00%	0.00%	[1]	(1.00%)	[1]
Total non-current assets	$ 0	$ 0		$ 0
Total non-current assets (Share %)	0.00%	0.00%		0.00%

[1]	Effective as of 1 January 2020, the Investment Bank was realigned into two new business lines, Global Banking and Global Markets, which affects how the business is managed and therefore the allocation of operating income to the regions. The presentation of prior-year information reflects the new regional management structure of the Investment Bank.

Net interest income and other_2

Net interest income and other net income from fair value changes on financial instruments (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net Interest Income And Other Net Income From Fair Value Changes On Financial Instruments [Line Items]
Other net income from financial instruments measured at fair value through profit or loss		$ 6,960	$ 6,842	$ 6,960
of which: net gains / (losses) from financial liabilities designated at fair value	[1]	1,509	(8,748)	9,382
Net income from financial instruments measured at fair value through profit or loss		8,259	7,853	8,298
Net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income
Interest income from loans and deposits	[2]	6,690	8,008	7,801
Interest income from securities financing transactions	[3]	862	2,005	1,567
Interest income from other financial instruments measured at amortized cost		335	364	266
Interest income from debt instruments measured at fair value through other comprehensive income		101	120	142
Interest income from derivative instruments designated as cash flow hedges		822	188	324
Total interest income from financial instruments measured at amortized cost and fair value through other comprehensive income		8,810	10,684	10,100
Interest expense on loans and deposits	[4]	1,031	2,634	1,980
Interest expense on securities financing transactions	[5]	870	1,152	1,130
Interest expense on debt issued		2,237	3,285	3,281
Interest expense on lease liabilities		110	122
Total interest expense from financial instruments measured at amortized cost		4,247	7,194	6,391
Total net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income		4,563	3,490	3,710
Net Interest Income From Financial Instruments Measured At Fair Value Through Profit Or Loss [Abstract]
Net interest income from financial instruments at fair value held for trading		841	1,214	1,105
Net interest income from brokerage balances		682	339	575
Net interest income from securities financing transactions at fair value not held for trading	[6]	77	116	115
Interest income from other financial instruments at fair value not held for trading		585	914	901
Interest expense on other financial instruments designated at fair value		(886)	(1,571)	(1,357)
Total net interest income from financial instruments measured at fair value through profit or loss		1,299	1,011	1,338
Net interest income		5,862	4,501	5,048
Net gains / (losses) on financial liabilities related to unit-linked investment contracts, which are designated at fair value through profit of loss			(1,830)	2,152
Net gains / (losses) on financial assets for unit-linked investment contracts that are mandatorily measured at fair value through profit or loss not held for trading			1,830	(2,134)
UBS AG [Member]
Net Interest Income And Other Net Income From Fair Value Changes On Financial Instruments [Line Items]
Other net income from financial instruments measured at fair value through profit or loss		6,930	6,833	6,953
of which: net gains / (losses) from financial liabilities designated at fair value	[7]	1,625	(8,748)	9,382
Net income from financial instruments measured at fair value through profit or loss		8,235	7,848	8,297
Net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income
Interest income from loans and deposits	[8]	6,696	8,026	7,822
Interest income from securities financing transactions	[9]	862	2,005	1,567
Interest income from other financial instruments measured at amortized cost		335	364	266
Interest income from debt instruments measured at fair value through other comprehensive income		101	120	142
Interest income from derivative instruments designated as cash flow hedges		822	188	324
Total interest income from financial instruments measured at amortized cost and fair value through other comprehensive income		8,816	10,703	10,121
Interest expense on loans and deposits	[10]	2,440	4,541	3,566
Interest expense on securities financing transactions	[11]	870	1,152	1,130
Interest expense on debt issued		918	1,491	1,797
Interest expense on lease liabilities		105	118
Total interest expense from financial instruments measured at amortized cost		4,333	7,303	6,494
Total net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income		4,483	3,400	3,628
Net Interest Income From Financial Instruments Measured At Fair Value Through Profit Or Loss [Abstract]
Net interest income from financial instruments at fair value held for trading		847	1,218	1,111
Net interest income from brokerage balances		682	339	575
Net interest income from securities financing transactions at fair value not held for trading	[12]	77	116	115
Interest income from other financial instruments at fair value not held for trading		585	914	901
Interest expense on other financial instruments designated at fair value		(886)	(1,571)	(1,357)
Total net interest income from financial instruments measured at fair value through profit or loss		1,305	1,015	1,344
Net interest income		$ 5,788	4,415	4,971
Net gains / (losses) on financial liabilities related to unit-linked investment contracts, which are designated at fair value through profit of loss			(1,830)	2,152
Net gains / (losses) on financial assets for unit-linked investment contracts that are mandatorily measured at fair value through profit or loss not held for trading			$ 1,830	$ (2,134)

[1]	Excludes fair value changes of hedges related to financial liabilities designated at fair value and foreign currency translation effects arising from translating foreign currency transactions into the respective functional currency, both of which are reported within Other net income from financial instruments measured at fair value through profit or loss. 2019 and 2018 included a net loss of USD 1,830 million and a net gain of USD 2,152 million, respectively, driven by financial liabilities related to unit-linked investment contracts, which are designated at fair value through profit or loss. This was offset by a net gain of USD 1,830 million and a net loss of USD 2,134 million in 2019 and 2018, respectively, related to financial assets for unit-linked investment contracts that are mandatorily measured at fair value through profit or loss not held for trading
[2]	Consists of interest income from cash and balances at central banks, loans and advances to banks and customers, and cash collateral receivables on derivative instruments, as well as negative interest on amounts due to banks, customer deposits, and cash collateral payables on derivative instruments.
[3]	Includes interest income on receivables from securities financing transactions and negative interest, including fees, on payables from securities financing transactions.
[4]	Consists of interest expense on amounts due to banks, cash collateral payables on derivative instruments, and customer deposits, as well as negative interest on cash and balances at central banks, loans and advances to banks, and cash collateral receivables on derivative instruments.
[5]	Includes interest expense on payables from securities financing transactions and negative interest, including fees, on receivables from securities financing transactions.
[6]	Includes interest expense on securities financing transactions designated at fair value.
[7]	Excludes fair value changes of hedges related to financial liabilities designated at fair value and foreign currency translation effects arising from translating foreign currency transactions into the respective functional currency, both of which are reported within Other net income from financial instruments measured at fair value through profit or loss. 2019 and 2018 included a net loss of USD 1,830 million and a net gain of USD 2,152 million, respectively, driven by financial liabilities related to unit-linked investment contracts, which are designated at fair value through profit or loss. This was offset by a net gain of USD 1,830 million and a net loss of USD 2,134 million in 2019 and 2018, respectively, related to financial assets for unit-linked investment contracts that are mandatorily measured at fair value through profit or loss not held for trading
[8]	Consists of interest income from cash and balances at central banks, loans and advances to banks and customers, and cash collateral receivables on derivative instruments, as well as negative interest on amounts due to banks, customer deposits, and cash collateral payables on derivative instruments.
[9]	Includes interest income on receivables from securities financing transactions and negative interest, including fees, on payables from securities financing transactions.
[10]	Consists of interest expense on amounts due to banks, cash collateral payables on derivative instruments, customer deposits, and funding from UBS Group AG and its subsidiaries, as well as negative interest on cash and balances at central banks, loans and advances to banks, and cash collateral receivables on derivative instruments.
[11]	Includes interest expense on payables from securities financing transactions and negative interest, including fees, on receivables from securities financing transactions.
[12]	Includes interest expense on securities financing transactions designated at fair value.

Net fee and commission income_2

Net fee and commission income (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net fee And Commission Income [Line Items]
Underwriting fees		$ 1,085	$ 741	$ 811
of which: equity underwriting fees		657	360	431
of which: debt underwriting fees		428	382	380
M&A and corporate finance fees		736	774	768
Brokerage fees		4,132	3,248	3,521
Investment fund fees		5,289	4,858	4,954
Portfolio management and related services		8,009	7,656	7,756
Other		1,710	1,832	1,786
Total fee and commission income	[1]	20,961	19,110	19,598
Brokerage fees paid		274	310	316
Distribution fees paid		589	590	580
Other		912	797	807
Total fee and commission expense		1,775	1,696	1,703
Net fee and commission income		19,186	17,413	17,895
of which: net brokerage fees		3,858	2,938	3,205
Global Wealth Management
Net fee And Commission Income [Line Items]
Total fee and commission income		12,475	11,694	12,059
Personal & Corporate Banking
Net fee And Commission Income [Line Items]
Total fee and commission income		1,426	1,307	1,338
Asset Management
Net fee And Commission Income [Line Items]
Total fee and commission income		3,129	2,659	2,579
Investment Bank
Net fee And Commission Income [Line Items]
Total fee and commission income		3,882	3,355	3,525
Group Functions
Net fee And Commission Income [Line Items]
Total fee and commission income		49	94	97
of which: recurring
Net fee And Commission Income [Line Items]
Total fee and commission income	[1]	13,009	12,544	12,911
of which: transaction-based
Net fee And Commission Income [Line Items]
Total fee and commission income	[1]	7,491	6,402	6,594
of which: performance-based
Net fee And Commission Income [Line Items]
Total fee and commission income	[1]	461	163	93
UBS AG
Net fee And Commission Income [Line Items]
Underwriting fees		1,104	784	843
of which: equity underwriting fees		657	360	431
of which: debt underwriting fees		446	424	412
M&A and corporate finance fees		736	774	768
Brokerage fees		4,132	3,248	3,521
Investment fund fees		5,289	4,859	4,955
Portfolio management and related services		8,009	7,656	7,756
Other		1,712	1,836	1,789
Total fee and commission income	[2]	20,982	19,156	19,632
Brokerage fees paid		274	310	316
Distribution fees paid		589	590	580
Other		911	796	807
Total fee and commission expense		1,775	1,696	1,703
Net fee and commission income		19,207	17,460	17,930
of which: net brokerage fees		3,858	2,938	3,205
UBS AG \| Global Wealth Management
Net fee And Commission Income [Line Items]
Total fee and commission income		12,475	11,694	12,059
UBS AG \| Personal & Corporate Banking
Net fee And Commission Income [Line Items]
Total fee and commission income		1,427	1,307	1,338
UBS AG \| Asset Management
Net fee And Commission Income [Line Items]
Total fee and commission income		3,129	2,659	2,579
UBS AG \| Investment Bank
Net fee And Commission Income [Line Items]
Total fee and commission income		3,901	3,397	3,557
UBS AG \| Group Functions
Net fee And Commission Income [Line Items]
Total fee and commission income		50	98	100
UBS AG \| of which: recurring
Net fee And Commission Income [Line Items]
Total fee and commission income	[2]	13,010	12,545	12,911
UBS AG \| of which: transaction-based
Net fee And Commission Income [Line Items]
Total fee and commission income	[2]	7,512	6,449	6,629
UBS AG \| of which: performance-based
Net fee And Commission Income [Line Items]
Total fee and commission income	[2]	$ 461	$ 163	$ 93

[1]	For the year ended 31 December 2020, reflects third-party fee and commission income of USD 12,475 million for Global Wealth Management, USD 1,426 million for Personal & Corporate Banking, USD 3,129 million for Asset Management, USD 3,882 million for the Investment Bank and USD 49 million for Group Functions (for the year ended 31 December 2019: USD 11,694 million for Global Wealth Management, USD 1,307 million for Personal & Corporate Banking, USD 2,659 million for Asset Management, USD 3,355 million for the Investment Bank and USD 94 million for Group Functions; for the year ended 31 December 2018: USD 12,059 million for Global Wealth Management, USD 1,338 million for Personal & Corporate Banking, USD 2,579 million for Asset Management, USD 3,525 million for the Investment Bank and USD 97 million for Group Functions).
[2]	For the year ended 31 December 2020, reflects third-party fee and commission income of USD 12,475 million for Global Wealth Management, USD 1,427 million for Personal & Corporate Banking, USD 3,129 million for Asset Management, USD 3,901 million for the Investment Bank and USD 50 million for Group Functions (for the year ended 31 December 2019: USD 11,694 million for Global Wealth Management, USD 1,307 million for Personal & Corporate Banking, USD 2,659 million for Asset Management, USD 3,397 million for the Investment Bank and USD 98 million for Group Functions; for the year ended 31 December 2018: USD 12,059 million for Global Wealth Management, USD 1,338 million for Personal & Corporate Banking, USD 2,579 million for Asset Management, USD 3,557 million for the Investment Bank and USD 100 million for Group Functions).

Other income (Detail)

Other income (Detail) - USD ($) $ in Millions		12 Months Ended
Other income (Detail) - USD ($) $ in Millions		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Associates, joint ventures and subsidiaries
Net gains / (losses) from acquisitions and disposals of subsidiaries	[2]	$ 635	[1]	$ (36)		$ (290)
Net gains / (losses) from disposals of investments in associates		0		4		46
Share of net profits of associates and joint ventures		84	[3],[4]	46	[3]	529	[5]
Impairments related to associates		0		(1)		0
Total		719		13		284
Net gains / (losses) from disposals of financial assets measured at fair value through other comprehensive income		40		31		0
Income from properties	[6]	26		27		24
Net gains / (losses) from properties held for sale		76	[7]	(19)		40
Other		216	[8]	160		80
Total other income		1,076		212		428
Gains / (losses) on the sales of intellectual property rights		215
Clearstream Fund Centre AG
Associates, joint ventures and subsidiaries
Gains (losses) on the sale of subsidiaries		631
SIX Group AG, Zurich
Associates, joint ventures and subsidiaries
Share of profit (loss) of associates related to valuation gains		26				460
UBS AG
Associates, joint ventures and subsidiaries
Net gains / (losses) from acquisitions and disposals of subsidiaries	[2]	635	[1]	(36)		(292)
Net gains / (losses) from disposals of investments in associates		0		4		46
Share of net profits of associates and joint ventures		84	[4],[9]	46	[9]	529	[5]
Impairments related to associates		0		(1)		0
Total		719		13		283
Net gains / (losses) from disposals of financial assets measured at fair value through other comprehensive income		40		31		0
Income from properties	[6]	25		27		24
Net gains / (losses) from properties held for sale		76	[7]	(19)		40
Income from shared services provided to UBS Group AG or its subsidiaries		422		464		478
Other		267	[8]	161		80
Total other income		1,549		$ 677		905
Gains / (losses) on the sales of intellectual property rights		215
UBS AG \| Clearstream Fund Centre AG
Associates, joint ventures and subsidiaries
Gains (losses) on the sale of subsidiaries		631
UBS AG \| SIX Group AG, Zurich
Associates, joint ventures and subsidiaries
Share of profit (loss) of associates related to valuation gains		$ 26				$ 460

[1]	Includes a USD 631 million net gain on the sale of a majority stake in Fondcenter AG. Refer to Note 29 for more information.
[2]	Includes foreign exchange gains / (losses) reclassified from other comprehensive income related to the disposal or closure of foreign operations
[3]	For 2020, consists of USD 64 million from associates and USD 19 million from joint ventures. For 2019, consists of USD 28 million from associates and USD 18 million from joint ventures.
[4]	Includes a valuation gain of USD 26 million on UBS’s equity ownership of SIX Group.
[5]	Includes a valuation gain of USD 460 million on UBS’s equity ownership of SIX Group related to the sale of SIX Payment Services to Worldline.
[6]	Includes rent received from third parties.
[7]	Includes net gains of USD 140 million arising from sale-and-leaseback transactions, primarily related to a property in Geneva, partly offset by remeasurement losses relating to properties that were reclassified as held for sale.
[8]	Includes a USD 215 million gain on the sale of intellectual property rights associated with the Bloomberg Commodity Index family.
[9]	For 2020, consists of USD 64 million from associates and USD 19 million from joint ventures. For 2019, consists of USD 28 million from associates and USD 18 million from joint ventures.

Personnel expenses (Detail)

Personnel expenses (Detail) - USD ($) $ in Millions		12 Months Ended
Personnel expenses (Detail) - USD ($) $ in Millions		Dec. 31, 2020		Dec. 31, 2019	Dec. 31, 2018
Personnel Expenses [Line Items]
Salaries	[1]	$ 7,023		$ 6,518	$ 6,448
Variable compensation - performance awards		3,209	[2]	2,755	2,995
of which: guarantees for new hires		25		29	43
Variable compensation - other		220		246	243
Financial advisor compensation	[3]	4,091		4,043	4,054
Contractors		375		381	489
Social security		899	[2]	799	791
Post-employment benefit plans		845		787	457	[4]
Other personnel expenses		561	[2]	555	654
Total personnel expenses		17,224		16,084	16,132
Reduction of net periodic pension expenses due to changes in Swiss pension plan at announcement					241
Increase (decrease) due to modification of deferred compensation awards
Personnel Expenses [Line Items]
Variable compensation - performance awards		240
Social security		20
Other personnel expenses		20
Total personnel expenses		280
UBS AG
Personnel Expenses [Line Items]
Salaries	[1]	5,535		5,183	5,199
Variable compensation - performance awards		2,953	[5]	2,545	2,794
of which: guarantees for new hires		24		29	43
Variable compensation - other		201		225	220
Financial advisor compensation	[3]	4,091		4,043	4,054
Contractors		138		147	184
Social security		704	[5]	627	629
Post-employment benefit plans		597		569	363	[6]
Other personnel expenses		466	[5]	461	549
Total personnel expenses		14,686		$ 13,801	13,992
Reduction of net periodic pension expenses due to changes in Swiss pension plan at announcement					$ 132
UBS AG \| Increase (decrease) due to modification of deferred compensation awards
Personnel Expenses [Line Items]
Variable compensation - performance awards		240
Social security		20
Other personnel expenses		10
Total personnel expenses		$ 270

[1]	Includes role-based allowances
[2]	During 2020, UBS modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees, resulting in an expense of approximately USD 280 million, of which USD 240 million is disclosed within Variable compensation – performance awards, USD 20 million within Social security and USD 20 million within Other personnel expenses. Refer to Note 1b for more information.
[3]	Financial advisor compensation consists of grid-based compensation based directly on compensable revenues generated by financial advisors and supplemental compensation calculated on the basis of financial advisor productivity, firm tenure, assets and other variables. It also includes expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements.
[4]	Changes to the pension fund of UBS in Switzerland announced in 2018 resulted in a reduction in the pension obligation recognized by UBS. As a consequence, a pre-tax gain of USD 241 million was recognized in the income statement in 2018, with no overall effect on total equity. Refer to Note 26 for more information.
[5]	During 2020, UBS AG modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees, resulting in an expense of approximately USD 270 million, of which USD 240 million is disclosed within Variable compensation – performance awards, USD 20 million within Social security and USD 10 million within Other personnel expenses. Refer to Note 1b for more information.
[6]	Changes to the pension fund of UBS AG in Switzerland announced in 2018 resulted in a reduction in the pension obligation recognized by UBS AG. As a consequence, a pre-tax gain of USD 132 million was recognized in the income statement in 2018, with no overall effect on total equity. Refer to Note 26 for more information.

General and administrative ex_3

General and administrative expenses (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
General And Administrative Expenses [Line Items]
Occupancy		$ 412	$ 381	$ 914
Rent and maintenance of IT and other equipment		813	718	654
Communication and market data services		615	627	638
Administration		565	551	590
of which: UK and German bank levies	[1]	55	41	58
Marketing and public relations	[2]	293	317	366
Travel and entertainment		169	378	425
Professional fees		675	882	1,015
Outsourcing of IT and other services		1,028	1,158	1,427
Litigation, regulatory and similar matters	[3]	197	165	657
Other		117	111	110
Total general and administrative expenses		4,885	5,288	6,797
UK bank levy net expenses		38	30	40
UK bank levy credit from prior years		27	31	45
Recoveries from third parties		3	11	29
UBS AG
General And Administrative Expenses [Line Items]
Occupancy		362	342	852
Rent and maintenance of IT and other equipment		346	339	326
Communication and market data services		505	517	520
Administration		5,499	5,176	5,383
of which: shared service costs charged by UBS Group AG or its subsidiaries		4,939	4,621	4,803
of which: UK and German bank levies	[1]	55	41	58
Marketing and public relations	[2]	225	233	277
Travel and entertainment		132	325	367
Professional fees		592	782	870
Outsourcing of IT and other services		522	610	729
Litigation, regulatory and similar matters	[3]	197	165	657
Other		108	97	95
Total general and administrative expenses		8,486	8,586	10,075
UK bank levy net expenses		38	30	40
UK bank levy credit from prior years		27	31	45
Recoveries from third parties		$ 3	$ 11	$ 29

[1]	The UK bank levy expenses of USD 38 million (USD 30 million for 2019 and USD 40 million for 2018) included a credit of USD 27 million (USD 31 million for 2019 and USD 45 million for 2018) related to prior years
[2]	Includes charitable donations.
[3]	Reflects the net increase in provisions for litigation, regulatory and similar matters recognized in the income statement. Refer to Note 18 for more information. Also includes recoveries from third parties of USD 3 million in 2020 (USD 11 million in 2019 and USD 29 million in 2018).

Income taxes (Narrative) (Detai

Income taxes (Narrative) (Detail) - USD ($) $ in Millions	12 Months Ended
Income taxes (Narrative) (Detail) - USD ($) $ in Millions	Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018	Jan. 01, 2018
Disclosure Income Taxes [Line Items]
Net tax expense	$ 1,583		$ 1,267		$ 1,468
Effective tax rate	19.40%
Normal tax rate	25.00%
Current tax expense / (benefit)	$ 1,200
Deferred tax assets	9,212	[1]	9,548	[1],[2]	10,116	$ 10,195
Net tax expense / (benefit) recognized in other comprehensive income	237		326
Deferred tax assets recognized by UBS entities that incurred losses in either the current or preceding year based on projections of future taxable profits	138		75
Unrecognized tax losses carried forward for which no deferred tax asset recognised	35,127		37,728
UK
Disclosure Income Taxes [Line Items]
Unrecognized tax losses carried forward for which no deferred tax asset recognised	13,800		14,900
United States
Disclosure Income Taxes [Line Items]
Deferred tax assets	8,800		9,300
Unrecognized tax losses carried forward for which no deferred tax asset recognised	16,300		17,800
Other locations
Disclosure Income Taxes [Line Items]
Deferred tax assets	400		200
Unrecognized tax losses carried forward for which no deferred tax asset recognised	5,000		5,000
Swiss
Disclosure Income Taxes [Line Items]
Net tax expense	598		630		2,846
Current tax expense / (benefit)	482		365		469
Deferred tax expense / (benefit)	116		265		2,377
Non-Swiss
Disclosure Income Taxes [Line Items]
Net tax expense	985		637		(1,378)
Current tax expense / (benefit)	749		426		575
Deferred tax expense / (benefit)	236		211		(1,953)
Deferred tax expense / (benefit) resulting from the remeasurement of DTAs	(208)
Deferred tax expense / (benefit) resulting from the net upward remeasurement of DTAs for certain entities	(146)
Deferred tax expense / (benefit) resulting from the contribution of certain real estate assets from UBS AG to UBS Americas Inc.	(62)
Amortisation of deferred tax assets	444
UBS AG
Disclosure Income Taxes [Line Items]
Net tax expense	$ 1,488		1,198		1,345
Effective tax rate	19.30%
Normal tax rate	25.00%
Deferred tax assets	$ 9,174	[1]	9,524	[1],[3]	10,077	$ 10,132
Net tax expense / (benefit) recognized in other comprehensive income	258		327
Deferred tax assets recognized by UBS entities that incurred losses in either the current or preceding year based on projections of future taxable profits	138		75
Unrecognized tax losses carried forward for which no deferred tax asset recognised	35,127		37,728
UBS AG \| UK
Disclosure Income Taxes [Line Items]
Unrecognized tax losses carried forward for which no deferred tax asset recognised	13,800		14,900
UBS AG \| United States
Disclosure Income Taxes [Line Items]
Deferred tax assets	8,800		9,300
Unrecognized tax losses carried forward for which no deferred tax asset recognised	16,300		17,800
UBS AG \| Other locations
Disclosure Income Taxes [Line Items]
Deferred tax assets	400		200
Unrecognized tax losses carried forward for which no deferred tax asset recognised	5,000		5,000
UBS AG \| Swiss
Disclosure Income Taxes [Line Items]
Net tax expense	524		582		2,760
Current tax expense / (benefit)	417		336		434
Deferred tax expense / (benefit)	107		246		2,326
UBS AG \| Non-Swiss
Disclosure Income Taxes [Line Items]
Net tax expense	963		616		(1,415)
Current tax expense / (benefit)	715		402		537
Deferred tax expense / (benefit)	248		$ 214		$ (1,952)
Deferred tax expense / (benefit) resulting from the remeasurement of DTAs	(208)
Deferred tax expense / (benefit) resulting from the net upward remeasurement of DTAs for certain entities	(146)
Deferred tax expense / (benefit) resulting from the contribution of certain real estate assets from UBS AG to UBS Americas Inc.	(62)
Amortisation of deferred tax assets	$ 444

[1]	Less deferred tax liabilities as applicable.
[2]	Comparative-period information has been restated. Refer to Note 1b for more information
[3]	Comparative-period information has been restated. Refer to Note 1b for more information.

Income taxes (Detail 1)

Income taxes (Detail 1) - USD ($) $ in Millions	12 Months Ended
Income taxes (Detail 1) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Major Components Of Tax Expense Income [Line Items]
Current tax expense / (benefit)	$ 1,200
Income tax expense / (benefit)	1,583	$ 1,267	$ 1,468
Swiss
Major Components Of Tax Expense Income [Line Items]
Current tax expense / (benefit)	482	365	469
Deferred tax expense / (benefit)	116	265	2,377
Income tax expense / (benefit)	598	630	2,846
Non-Swiss
Major Components Of Tax Expense Income [Line Items]
Current tax expense / (benefit)	749	426	575
Deferred tax expense / (benefit)	236	211	(1,953)
Income tax expense / (benefit)	985	637	(1,378)
UBS AG
Major Components Of Tax Expense Income [Line Items]
Income tax expense / (benefit)	1,488	1,198	1,345
UBS AG \| Swiss
Major Components Of Tax Expense Income [Line Items]
Current tax expense / (benefit)	417	336	434
Deferred tax expense / (benefit)	107	246	2,326
Income tax expense / (benefit)	524	582	2,760
UBS AG \| Non-Swiss
Major Components Of Tax Expense Income [Line Items]
Current tax expense / (benefit)	715	402	537
Deferred tax expense / (benefit)	248	214	(1,952)
Income tax expense / (benefit)	$ 963	$ 616	$ (1,415)

Income taxes (Detail 2)

Income taxes (Detail 2) - USD ($) $ in Millions	12 Months Ended
Income taxes (Detail 2) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Major Components Of Tax Expense Income [Line Items]
Operating profit / (loss) before tax	$ 8,155	$ 5,577	$ 5,991
Income taxes at Swiss tax rate of 19.5% for 2020, 20.5% for 2019 and 21% for 2018	1,590	1,143	1,258
Increase / (decrease) resulting from:
Non-Swiss tax rates differing from Swiss tax rate	110	82	55
Tax effects of losses not recognized	144	131	223
Previously unrecognized tax losses now utilized	(212)	(265)	(25)
Non-taxable and lower taxed income	(394)	(351)	(430)
Non-deductible expenses and additional taxable income	385	732	905
Adjustments related to prior years - current tax	(67)	(5)	114
Adjustments related to prior years - deferred tax	12	(6)	26
Change in deferred tax recognition	(381)	(294)	(795)
Adjustments to deferred tax balances arising from changes in tax rates	234	(9)	0
Other items	161	107	137
Income tax expense / (benefit)	$ 1,583	$ 1,267	$ 1,468
Applicable tax rate	19.50%	20.50%	21.00%
Swiss
Major Components Of Tax Expense Income [Line Items]
Operating profit / (loss) before tax	$ 3,403	$ 2,571	$ 1,843
Increase / (decrease) resulting from:
Income tax expense / (benefit)	598	630	2,846
Non-Swiss
Major Components Of Tax Expense Income [Line Items]
Operating profit / (loss) before tax	4,752	3,006	4,148
Increase / (decrease) resulting from:
Income tax expense / (benefit)	985	637	(1,378)
UBS AG
Major Components Of Tax Expense Income [Line Items]
Operating profit / (loss) before tax	7,699	5,169	5,458
Income taxes at Swiss tax rate of 19.5% for 2020, 20.5% for 2019 and 21% for 2018	1,501	1,060	1,146
Increase / (decrease) resulting from:
Non-Swiss tax rates differing from Swiss tax rate	96	72	68
Tax effects of losses not recognized	144	131	222
Previously unrecognized tax losses now utilized	(212)	(265)	(25)
Non-taxable and lower taxed income	(381)	(305)	(419)
Non-deductible expenses and additional taxable income	373	713	883
Adjustments related to prior years - current tax	(66)	1	114
Adjustments related to prior years - deferred tax	18	(6)	27
Change in deferred tax recognition	(383)	(293)	(802)
Adjustments to deferred tax balances arising from changes in tax rates	235	(9)	0
Other items	163	99	130
Income tax expense / (benefit)	$ 1,488	$ 1,198	$ 1,345
Applicable tax rate	19.50%	20.50%	21.00%
UBS AG \| Swiss
Major Components Of Tax Expense Income [Line Items]
Operating profit / (loss) before tax	$ 3,042	$ 2,297	$ 1,427
Increase / (decrease) resulting from:
Income tax expense / (benefit)	524	582	2,760
UBS AG \| Non-Swiss
Major Components Of Tax Expense Income [Line Items]
Operating profit / (loss) before tax	4,657	2,872	4,031
Increase / (decrease) resulting from:
Income tax expense / (benefit)	$ 963	$ 616	$ (1,415)

Income taxes - DTA (Detail 3.1)

Income taxes - DTA (Detail 3.1) - USD ($) $ in Millions		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018	Jan. 01, 2018
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Gross	[1]	$ 18,492		$ 19,022	[2]
Valuation allowance	[1]	(9,280)		(9,474)	[2]
Recognized		9,212	[1]	9,548	[1],[2]	$ 10,116	$ 10,195
Tax loss carry-forwards
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Gross	[1]	14,108		14,826	[2]
Valuation allowance	[1]	(8,715)		(8,861)	[2]
Recognized	[1]	5,393		5,965	[2]
Temporary differences
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Gross	[1]	4,384		4,197	[2]
Valuation allowance	[1]	(565)		(613)	[2]
Recognized	[1]	3,819		3,583	[2]
of which: related to real estate costs capitalized for US tax purposes \| Temporary differences
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Gross	[1]	2,268		2,219	[2]
Valuation allowance	[1]	0		0	[2]
Recognized	[1]	2,268		2,219	[2]
of which: related to compensation and benefits \| Temporary differences
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Gross	[1]	1,128		1,091	[2]
Valuation allowance	[1]	(173)		(179)	[2]
Recognized	[1]	955		912	[2]
of which: related to trading assets \| Temporary differences
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Gross	[1]	23		99	[2]
Valuation allowance	[1]	(6)		(5)	[2]
Recognized	[1]	16		93	[2]
of which: other \| Temporary differences
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Gross	[1]	966		788	[2]
Valuation allowance	[1]	(386)		(429)	[2]
Recognized	[1]	580		359	[2]
UBS AG
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Gross	[1]	18,450		18,995
Valuation allowance	[1]	(9,276)		(9,471)
Recognized		9,174	[1]	9,524	[1],[3]	$ 10,077	$ 10,132
UBS AG \| Tax loss carry-forwards
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Gross	[1]	14,108		14,826
Valuation allowance	[1]	(8,715)		(8,861)
Recognized	[1]	5,393		5,965
UBS AG \| Temporary differences
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Gross	[1]	4,343		4,169
Valuation allowance	[1]	(561)		(610)
Recognized	[1]	3,782		3,559
UBS AG \| of which: related to real estate costs capitalized for US tax purposes \| Temporary differences
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Gross	[1]	2,268		2,219	[2]
Valuation allowance	[1]	0		0	[2]
Recognized	[1]	2,268		2,219	[2]
UBS AG \| of which: related to compensation and benefits \| Temporary differences
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Gross	[1]	1,112		1,086	[2]
Valuation allowance	[1]	(173)		(179)	[2]
Recognized	[1]	939		907	[2]
UBS AG \| of which: related to trading assets \| Temporary differences
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Gross	[1]	23		99	[2]
Valuation allowance	[1]	(5)		(5)	[2]
Recognized	[1]	16		93	[2]
UBS AG \| of which: other \| Temporary differences
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Gross	[1]	940		765	[2]
Valuation allowance	[1]	(383)		(426)	[2]
Recognized	[1]	$ 558		$ 340	[2]

[1]	Less deferred tax liabilities as applicable.
[2]	Comparative-period information has been restated. Refer to Note 1b for more information
[3]	Comparative-period information has been restated. Refer to Note 1b for more information.

Income taxes - DTL (Detail 3.2)

Income taxes - DTL (Detail 3.2) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	[1]
Disclosure Of Deferred Tax Liabilities [Line Items]
Goodwill and intangible assets	$ 31	$ 29
Cash flow hedges	425	156
Other	108	126
Total deferred tax liabilities	564	311
UBS AG
Disclosure Of Deferred Tax Liabilities [Line Items]
Goodwill and intangible assets	31	29
Cash flow hedges	425	156
Other	102	126
Total deferred tax liabilities	$ 558	$ 311

[1]	Comparative-period information has been restated. Refer to Note 1b for more information

Income taxes (Detail 4)

Income taxes (Detail 4) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Unused Tax Losses For Which No Deferred Tax Asset Recognised [Line Items]
Unrecognized tax losses carried forward for which no deferred tax asset recognised	$ 35,127	$ 37,728
Within 1 year
Unused Tax Losses For Which No Deferred Tax Asset Recognised [Line Items]
Unrecognized tax losses carried forward for which no deferred tax asset recognised	146	13
From 2 to 5 years
Unused Tax Losses For Which No Deferred Tax Asset Recognised [Line Items]
Unrecognized tax losses carried forward for which no deferred tax asset recognised	638	609
From 6 to 10 years
Unused Tax Losses For Which No Deferred Tax Asset Recognised [Line Items]
Unrecognized tax losses carried forward for which no deferred tax asset recognised	13,257	14,712
From 11 to 20 years
Unused Tax Losses For Which No Deferred Tax Asset Recognised [Line Items]
Unrecognized tax losses carried forward for which no deferred tax asset recognised	3,858	4,030
No expiry
Unused Tax Losses For Which No Deferred Tax Asset Recognised [Line Items]
Unrecognized tax losses carried forward for which no deferred tax asset recognised	17,227	18,364
UBS AG
Unused Tax Losses For Which No Deferred Tax Asset Recognised [Line Items]
Unrecognized tax losses carried forward for which no deferred tax asset recognised	35,127	37,728
UBS AG \| Within 1 year
Unused Tax Losses For Which No Deferred Tax Asset Recognised [Line Items]
Unrecognized tax losses carried forward for which no deferred tax asset recognised	146	13
UBS AG \| From 2 to 5 years
Unused Tax Losses For Which No Deferred Tax Asset Recognised [Line Items]
Unrecognized tax losses carried forward for which no deferred tax asset recognised	638	609
UBS AG \| From 6 to 10 years
Unused Tax Losses For Which No Deferred Tax Asset Recognised [Line Items]
Unrecognized tax losses carried forward for which no deferred tax asset recognised	13,257	14,712
UBS AG \| From 11 to 20 years
Unused Tax Losses For Which No Deferred Tax Asset Recognised [Line Items]
Unrecognized tax losses carried forward for which no deferred tax asset recognised	3,858	4,030
UBS AG \| No expiry
Unused Tax Losses For Which No Deferred Tax Asset Recognised [Line Items]
Unrecognized tax losses carried forward for which no deferred tax asset recognised	$ 17,227	$ 18,364

Expected credit loss measurem_3

Expected credit loss measurement - On-balance sheet financial assets subject to ECL (Detail) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		$ (1,468)	$ (1,029)	$ (1,054)
Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	695,603	583,159
Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	687,345	576,815
Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	158,231	107,068
Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	15,444	12,447
Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	74,210	84,245
Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	32,737	23,289
Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	379,528	326,786
Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	148,175	132,646
Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	43,429	38,481
Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	15,161	9,703
Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	14,872	11,786
Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	133,850	112,893
Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	1,558	1,661
Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	3,269	2,844
Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	27,194	22,980
Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,569	2,877
Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	8,258	6,345
Twelve-month expected credit losses \| Positions that are not credit impaired
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(306)	(181)	(176)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	672,021	564,765
Twelve-month expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	663,763	558,420
Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	158,231	107,068
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	15,260	12,367
Twelve-month expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	74,210	84,245
Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	32,737	23,289
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	356,948	309,499
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	138,769	124,063
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	37,568	32,932
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	12,658	9,184
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	11,990	9,817
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	133,795	112,796
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	1,198	1,314
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	3,214	2,826
Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	26,377	21,953
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	1,982	2,341
Twelve-month expected credit losses \| Positions that are not credit impaired \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	8,258	6,345
Lifetime expected credit losses \| Positions that are not credit impaired
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(333)	(160)	(183)
Lifetime expected credit losses \| Positions that are not credit impaired \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(93)
Lifetime expected credit losses \| Positions that are not credit impaired \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(53)
Lifetime expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(110)
Lifetime expected credit losses \| Positions that are not credit impaired \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(38)
Lifetime expected credit losses \| Positions that are not credit impaired \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(14)
Lifetime expected credit losses \| Positions that are not credit impaired \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	20,873	16,069
Lifetime expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	20,873	16,069
Lifetime expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	184	80
Lifetime expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	20,341	15,538
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	8,448	7,624
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	5,838	5,532
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,029	424
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,254	1,449
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	330	325
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	43	8
Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	348	451
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	137	334
Lifetime expected credit losses \| Positions that are not credit impaired \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
Lifetime expected credit losses \| Credit-impaired positions
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(829)	(688)	$ (695)
Lifetime expected credit losses \| Credit-impaired positions \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,709	2,326
Lifetime expected credit losses \| Credit-impaired positions \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,709	2,326
Lifetime expected credit losses \| Credit-impaired positions \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,240	1,749
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	959	959
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	23	17
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	474	94
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	628	521
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	55	98
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	30	22
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	12	10
Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	469	576
Lifetime expected credit losses \| Credit-impaired positions \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	450	202
Lifetime expected credit losses \| Credit-impaired positions \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
Gross carrying amount \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		696,815	584,075
Gross carrying amount \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		688,556	577,730
Gross carrying amount \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		158,231	107,068
Gross carrying amount \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		15,460	12,454
Gross carrying amount \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		74,212	84,246
Gross carrying amount \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		32,737	23,289
Gross carrying amount \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		380,589	327,550
Gross carrying amount \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		148,341	132,756
Gross carrying amount \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		43,492	38,524
Gross carrying amount \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		15,440	9,819
Gross carrying amount \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		15,183	12,089
Gross carrying amount \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		133,886	112,915
Gross carrying amount \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		1,596	1,696
Gross carrying amount \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		3,375	2,925
Gross carrying amount \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		27,327	23,123
Gross carrying amount \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		2,677	2,987
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		158,231	107,068
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		15,269	12,371
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		74,212	84,246
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		32,737	23,289
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		357,090	309,581
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		138,803	124,077
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		37,583	32,937
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		12,684	9,199
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		12,010	9,834
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		133,800	112,799
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		1,209	1,322
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		3,219	2,831
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		26,410	21,988
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		2,009	2,370
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		189	81
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		20,556	15,661
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		8,540	7,679
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		5,883	5,567
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		2,069	429
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		2,277	1,464
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		342	339
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		43	8
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		357	463
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		142	344
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		1	1
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		2,943	2,308
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		998	1,000
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		27	21
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		686	192
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		896	791
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		86	116
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		46	35
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		113	87
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		560	672
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		526	272
Allowance for expected credit loss \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1,211)	(915)
Allowance for expected credit loss \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1,211)	(915)
Allowance for expected credit loss \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(16)	(6)
Allowance for expected credit loss \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(2)	(2)
Allowance for expected credit loss \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1,060)	(764)
Allowance for expected credit loss \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(166)	(110)
Allowance for expected credit loss \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(63)	(43)
Allowance for expected credit loss \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(279)	(117)
Allowance for expected credit loss \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(310)	(303)
Allowance for expected credit loss \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(36)	(22)
Allowance for expected credit loss \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(38)	(35)
Allowance for expected credit loss \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(106)	(81)
Allowance for expected credit loss \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(133)	(143)
Allowance for expected credit loss \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(108)	(109)
Allowance for expected credit loss \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(187)	(124)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(187)	(124)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(9)	(4)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(2)	(2)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(142)	(82)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(35)	(15)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(15)	(5)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(27)	(15)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(19)	(17)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(5)	(4)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(11)	(8)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(5)	(5)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(34)	(35)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(27)	(29)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(229)	(137)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(229)	(137)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(5)	(1)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(215)	(123)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(93)	(55)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(44)	(34)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(40)	(4)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(23)	(15)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(11)	(14)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(9)	(13)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(5)	(11)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(795)	(655)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(795)	(655)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1)	(1)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(703)	(559)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(39)	(41)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(4)	(4)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(212)	(98)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(268)	(271)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(31)	(18)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(16)	(13)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(101)	(77)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(90)	(95)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(76)	(70)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
UBS AG
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(1,468)	(1,029)
UBS AG \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	696,976	584,329
UBS AG \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	688,717	577,985
UBS AG \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	158,231	107,068
UBS AG \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	15,344	12,379
UBS AG \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	74,210	84,245
UBS AG \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	32,737	23,289
UBS AG \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	380,977	327,992
UBS AG \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	148,175	132,646
UBS AG \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	43,429	38,481
UBS AG \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	15,161	9,703
UBS AG \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	14,872	11,786
UBS AG \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	133,850	112,893
UBS AG \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	1,558	1,661
UBS AG \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	3,269	2,844
UBS AG \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	27,219	23,012
UBS AG \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,569	2,877
UBS AG \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	8,258	6,345
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(306)	(181)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	673,394	565,935
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	665,135	559,590
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	158,231	107,068
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	15,160	12,298
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	74,210	84,245
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	32,737	23,289
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	358,396	310,705
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	138,769	124,063
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	37,568	32,932
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	12,658	9,184
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	11,990	9,817
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	133,795	112,796
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	1,198	1,314
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	3,214	2,826
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	26,401	21,985
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	1,982	2,341
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	8,258	6,345
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(333)	(160)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(93)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(53)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(110)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(38)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(14)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	20,873	16,069
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	20,873	16,069
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	184	80
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	20,341	15,538
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	8,448	7,624
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	5,838	5,532
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,029	424
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,254	1,449
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	330	325
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	43	8
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	348	451
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	137	334
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(829)	(688)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,709	2,326
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,709	2,326
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,240	1,749
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	959	959
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	23	17
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	474	94
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	628	521
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	55	98
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	30	22
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	12	10
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	469	576
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	450	202
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	0
UBS AG \| Gross carrying amount \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		698,187	585,245
UBS AG \| Gross carrying amount \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		689,929	578,899
UBS AG \| Gross carrying amount \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		158,231	107,068
UBS AG \| Gross carrying amount \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		15,360	12,386
UBS AG \| Gross carrying amount \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		74,212	84,246
UBS AG \| Gross carrying amount \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		32,737	23,289
UBS AG \| Gross carrying amount \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		382,036	328,756
UBS AG \| Gross carrying amount \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		148,341	132,756
UBS AG \| Gross carrying amount \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		43,492	38,524
UBS AG \| Gross carrying amount \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		15,440	9,819
UBS AG \| Gross carrying amount \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		15,183	12,089
UBS AG \| Gross carrying amount \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		133,886	112,915
UBS AG \| Gross carrying amount \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		1,596	1,696
UBS AG \| Gross carrying amount \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		3,375	2,925
UBS AG \| Gross carrying amount \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		27,352	23,154
UBS AG \| Gross carrying amount \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		2,677	2,987
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		158,231	107,068
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		15,170	12,303
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		74,212	84,246
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		32,737	23,289
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		358,538	310,787
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		138,803	124,077
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		37,583	32,937
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		12,684	9,199
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		12,010	9,834
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		133,800	112,799
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		1,209	1,322
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		3,219	2,831
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		26,435	22,019
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		2,009	2,370
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		189	81
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		20,556	15,661
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		8,540	7,679
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		5,883	5,567
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		2,069	429
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		2,277	1,464
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		342	339
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		43	8
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		357	463
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		142	344
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		1	1
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		2,943	2,308
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		998	1,000
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		27	21
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		686	192
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		896	791
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		86	116
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		46	35
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		113	87
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		560	672
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		526	272
UBS AG \| Allowance for expected credit loss \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1,211)	(915)
UBS AG \| Allowance for expected credit loss \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1,211)	(915)
UBS AG \| Allowance for expected credit loss \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(16)	(6)
UBS AG \| Allowance for expected credit loss \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(2)	(2)
UBS AG \| Allowance for expected credit loss \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1,060)	(764)
UBS AG \| Allowance for expected credit loss \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(166)	(110)
UBS AG \| Allowance for expected credit loss \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(63)	(43)
UBS AG \| Allowance for expected credit loss \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(279)	(117)
UBS AG \| Allowance for expected credit loss \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(310)	(303)
UBS AG \| Allowance for expected credit loss \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(36)	(22)
UBS AG \| Allowance for expected credit loss \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(38)	(35)
UBS AG \| Allowance for expected credit loss \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(106)	(81)
UBS AG \| Allowance for expected credit loss \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(133)	(143)
UBS AG \| Allowance for expected credit loss \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(108)	(109)
UBS AG \| Allowance for expected credit loss \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(187)	(124)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(187)	(124)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(9)	(4)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(2)	(2)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(142)	(82)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(35)	(15)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(15)	(5)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(27)	(15)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(19)	(17)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(5)	(4)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(11)	(8)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(5)	(5)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(34)	(35)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(27)	(29)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(229)	(137)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(229)	(137)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(5)	(1)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(215)	(123)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(93)	(55)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(44)	(34)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(40)	(4)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(23)	(15)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(11)	(14)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(9)	(13)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(5)	(11)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(795)	(655)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(795)	(655)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1)	(1)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(703)	(559)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(39)	(41)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(4)	(4)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(212)	(98)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(268)	(271)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(31)	(18)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(16)	(13)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(101)	(77)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(90)	(95)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(76)	(70)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 0	$ 0

[1]	The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances.

Expected credit loss measurem_4

Expected credit loss measurement - Off-balance sheet financial assets subject to ECL (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Provision Matrix [Line Items]
Total exposure	$ 105,116	$ 85,728
ECL provision	(257)	(114)
Total ECL allowances and provisions	(1,468)	(1,029)	$ (1,054)
Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	7,056	6,046
Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	32,828	26,706
SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	9,121	6,782
Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	7,690	9,676
Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	14,178	9,902
Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	8,661	7,890
Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,683	2,678
Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure	17,081	18,142
ECL provision	(63)	(42)
Guarantees \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	3,710	3,687
ECL provision	(20)	(10)
Guarantees \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,310	1,180
ECL provision	(13)	(24)
Guarantees \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	7,637	7,966
ECL provision	(17)	(5)
Guarantees \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	641	622
ECL provision	(2)	(1)
Guarantees \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,441	2,334
ECL provision	(2)	(1)
Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure	41,372	27,547
ECL provision	(142)	(35)
Irrevocable loan commitments \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	24,209	18,735
ECL provision	(121)	(27)
Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure	3,247	1,657
ECL provision	0	0
Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure	40,134	35,092
ECL provision	(50)	(34)
Committed unconditionally revocable credit lines \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	6,328	5,242
ECL provision	(12)	(16)
Committed unconditionally revocable credit lines \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	4,909	4,274
ECL provision	(9)	(1)
Committed unconditionally revocable credit lines \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	5,827	4,787
ECL provision	(16)	(9)
Committed unconditionally revocable credit lines \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	9,671	7,976
ECL provision	0	0
Committed unconditionally revocable credit lines \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	8,661	7,890
ECL provision	(8)	(6)
Committed unconditionally revocable credit lines \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	242	344
ECL provision	0	0
Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure	3,282	3,289
ECL provision	(2)	(3)
Twelve-month expected credit losses \| Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total exposure	93,337	83,626
ECL provision	(119)	(58)
Total ECL allowances and provisions	(306)	(181)	(176)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	6,576	5,715
Twelve-month expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	25,026	26,009
Twelve-month expected credit losses \| Positions that are not credit impaired \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	7,239	6,407
Twelve-month expected credit losses \| Positions that are not credit impaired \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	7,242	9,651
Twelve-month expected credit losses \| Positions that are not credit impaired \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	14,170	9,895
Twelve-month expected credit losses \| Positions that are not credit impaired \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	8,220	7,535
Twelve-month expected credit losses \| Positions that are not credit impaired \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,658	2,664
Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure	14,687	17,757
ECL provision	(14)	(8)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	2,048	3,461
ECL provision	(4)	(1)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	936	1,055
ECL provision	(1)	0
Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	7,413	7,950
ECL provision	(7)	(4)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	633	622
ECL provision	0	0
Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,416	2,320
ECL provision	(1)	(1)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure	36,894	27,078
ECL provision	(74)	(30)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	20,195	18,349
ECL provision	(63)	(24)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure	3,247	1,657
ECL provision	0	0
Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure	35,233	33,848
ECL provision	(29)	(17)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	5,811	4,934
ECL provision	(5)	(3)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	2,783	4,188
ECL provision	(2)	(1)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	4,596	4,589
ECL provision	(12)	(8)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	9,671	7,975
ECL provision	(1)	0
Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	8,220	7,535
ECL provision	(6)	(4)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	242	344
ECL provision	0	0
Twelve-month expected credit losses \| Positions that are not credit impaired \| Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure	3,277	3,285
ECL provision	(2)	(3)
Lifetime expected credit losses \| Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total exposure	11,396	1,920
ECL provision	(104)	(23)
Total ECL allowances and provisions	(333)	(160)	(183)
Lifetime expected credit losses \| Positions that are not credit impaired \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	481	326
Total ECL allowances and provisions	(53)
Lifetime expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	7,598	630
Total ECL allowances and provisions	(110)
Lifetime expected credit losses \| Positions that are not credit impaired \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,734	273
Total ECL allowances and provisions	(38)
Lifetime expected credit losses \| Positions that are not credit impaired \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	448	25
Total ECL allowances and provisions	(19)
Lifetime expected credit losses \| Positions that are not credit impaired \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	430	355
Total ECL allowances and provisions	(14)
Lifetime expected credit losses \| Positions that are not credit impaired \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	25	13
Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure	2,225	304
ECL provision	(15)	(1)
Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,549	203
ECL provision	(5)	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	326	67
ECL provision	(1)	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	224	16
ECL provision	(9)	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	25	13
ECL provision	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure	4,374	419
ECL provision	(68)	(5)
Lifetime expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	3,950	359
ECL provision	(58)	(3)
Lifetime expected credit losses \| Positions that are not credit impaired \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure	4,792	1,197
ECL provision	(21)	(17)
Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	517	307
ECL provision	(7)	(13)
Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	2,099	69
ECL provision	(7)	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,169	171
ECL provision	(4)	(1)
Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	430	355
ECL provision	(2)	(2)
Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure	5	0
ECL provision	0	0
Lifetime expected credit losses \| Credit-impaired positions
Disclosure Of Provision Matrix [Line Items]
Total exposure	382	182
ECL provision	(34)	(33)
Total ECL allowances and provisions	(829)	(688)	$ (695)
Lifetime expected credit losses \| Credit-impaired positions \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	4
Lifetime expected credit losses \| Credit-impaired positions \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	205	67
Lifetime expected credit losses \| Credit-impaired positions \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	148	101
Lifetime expected credit losses \| Credit-impaired positions \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	8	7
Lifetime expected credit losses \| Credit-impaired positions \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	11	0
Lifetime expected credit losses \| Credit-impaired positions \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure	170	82
ECL provision	(34)	(33)
Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	113	24
ECL provision	(12)	(9)
Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	48	58
ECL provision	(11)	(23)
Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	8	0
ECL provision	(2)	(1)
Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure	104	50
ECL provision	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Irrevocable loan commitments \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	64	27
ECL provision	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure	108	46
ECL provision	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	27	17
ECL provision	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	63	27
ECL provision	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	1
ECL provision	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	11	0
ECL provision	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	4
ECL provision	0	0
UBS AG
Disclosure Of Provision Matrix [Line Items]
Total exposure	107,059	87,614
ECL provision	(257)	(114)
Total ECL allowances and provisions	(1,468)	(1,029)
UBS AG \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	7,056	6,046
UBS AG \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	32,828	26,706
UBS AG \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	9,121	6,782
UBS AG \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	7,690	9,676
UBS AG \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	14,178	9,902
UBS AG \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	8,661	7,890
UBS AG \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,683	2,678
UBS AG \| Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure	17,081	18,142
ECL provision	(63)	(42)
UBS AG \| Guarantees \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	3,710	3,687
ECL provision	(20)	(10)
UBS AG \| Guarantees \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,310	1,180
ECL provision	(13)	(24)
UBS AG \| Guarantees \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	7,637	7,966
ECL provision	(17)	(5)
UBS AG \| Guarantees \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	641	622
ECL provision	(2)	(1)
UBS AG \| Guarantees \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,441	2,334
ECL provision	(2)	(1)
UBS AG \| Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure	41,372	27,547
ECL provision	(142)	(35)
UBS AG \| Irrevocable loan commitments \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	24,209	18,735
ECL provision	(121)	(27)
UBS AG \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure	3,247	1,657
ECL provision	0	0
UBS AG \| Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure	42,077	36,979
ECL provision	(50)	(34)
UBS AG \| Committed unconditionally revocable credit lines \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	6,328	5,242
ECL provision	(12)	(16)
UBS AG \| Committed unconditionally revocable credit lines \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	4,909	4,274
ECL provision	(9)	(1)
UBS AG \| Committed unconditionally revocable credit lines \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	5,827	4,787
ECL provision	(16)	(9)
UBS AG \| Committed unconditionally revocable credit lines \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	9,671	7,976
ECL provision	0	0
UBS AG \| Committed unconditionally revocable credit lines \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	8,661	7,890
ECL provision	(8)	(6)
UBS AG \| Committed unconditionally revocable credit lines \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	242	344
ECL provision	0	0
UBS AG \| Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure	3,282	3,289
ECL provision	(2)	(3)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total exposure	95,281	85,513
ECL provision	(119)	(58)
Total ECL allowances and provisions	(306)	(181)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	6,576	5,715
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	25,026	26,009
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	7,239	6,407
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	7,270	9,651
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	14,170	9,895
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	8,220	7,535
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,658	2,664
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure	14,687	17,757
ECL provision	(14)	(8)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	2,048	3,461
ECL provision	(4)	(1)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	936	1,055
ECL provision	(1)	0
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	7,413	7,950
ECL provision	(7)	(4)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	633	622
ECL provision	0	0
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,416	2,320
ECL provision	(1)	(1)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure	36,894	27,078
ECL provision	(74)	(30)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	20,195	18,349
ECL provision	(63)	(24)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure	3,247	1,657
ECL provision	0	0
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure	37,176	35,735
ECL provision	(29)	(17)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	5,811	4,934
ECL provision	(5)	(3)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	2,783	4,188
ECL provision	(2)	(1)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	4,596	4,589
ECL provision	(12)	(8)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	9,671	7,975
ECL provision	(1)	0
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	8,220	7,535
ECL provision	(6)	(4)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	242	344
ECL provision	0	0
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure	3,277	3,285
ECL provision	(2)	(3)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total exposure	11,396	1,920
ECL provision	(104)	(23)
Total ECL allowances and provisions	(333)	(160)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	481	326
Total ECL allowances and provisions	(53)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	7,598	630
Total ECL allowances and provisions	(110)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,734	273
Total ECL allowances and provisions	(38)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	448	25
Total ECL allowances and provisions	(19)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	430	355
Total ECL allowances and provisions	(14)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	25	13
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure	2,225	304
ECL provision	(15)	(1)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,549	203
ECL provision	(5)	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	326	67
ECL provision	(1)	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	224	16
ECL provision	(9)	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	25	13
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure	4,374	419
ECL provision	(68)	(5)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	3,950	359
ECL provision	(58)	(3)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure	4,792	1,197
ECL provision	(21)	(17)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	517	307
ECL provision	(7)	(13)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	2,099	69
ECL provision	(7)	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,169	171
ECL provision	(4)	(1)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	430	355
ECL provision	(2)	(2)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure	5	0
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions
Disclosure Of Provision Matrix [Line Items]
Total exposure	382	182
ECL provision	(34)	(33)
Total ECL allowances and provisions	(829)	(688)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	4
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	205	67
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	148	101
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	8	7
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	11	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure	170	82
ECL provision	(34)	(33)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	113	24
ECL provision	(12)	(9)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	48	58
ECL provision	(11)	(23)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	8	0
ECL provision	(2)	(1)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure	104	50
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Irrevocable loan commitments \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	64	27
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure	108	46
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	27	17
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	63	27
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	1
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	11	0
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	4
ECL provision	$ 0	$ 0

Expected credit loss measurem_5

Expected credit loss measurement - Coverage ratios (Narrative) (Detail)	12 Months Ended
	Dec. 31, 2020
Decrease in value of real estate collateral by 20 percent
Disclosure Of Provision Matrix [Line Items]
Percentage of carrying amount of Swiss residential mortgage loans covered by real estate collateral	99.00%
Decrease in value of real estate collateral by 30 percent
Disclosure Of Provision Matrix [Line Items]
Percentage of carrying amount of Swiss residential mortgage loans covered by real estate collateral	98.00%
UBS AG \| Decrease in value of real estate collateral by 20 percent
Disclosure Of Provision Matrix [Line Items]
Percentage of carrying amount of Swiss residential mortgage loans covered by real estate collateral	99.00%
UBS AG \| Decrease in value of real estate collateral by 30 percent
Disclosure Of Provision Matrix [Line Items]
Percentage of carrying amount of Swiss residential mortgage loans covered by real estate collateral	98.00%

Expected credit loss measurem_6

Expected credit loss measurement - Coverage ratios (Detail 1) - USD ($) $ in Millions		Dec. 31, 2020		Dec. 31, 2019
Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.07%		0.07%
Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.21%		0.29%
Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.46%		0.14%
SME clients
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.40%		0.53%
Lombard
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.02%		0.01%
Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.09%		0.08%
Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.10%		0.05%
Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	$ 695,603		$ 583,159
Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	687,345		576,815
Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	379,528		326,786
Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	148,175		132,646
Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	43,429		38,481
Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	15,161		9,703
Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	14,872		11,786
Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	133,850		112,893
Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	1,558		1,661
Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	3,269		2,844
Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	27,194		22,980
Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,569		2,877
Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	$ 8,258		$ 6,345
Twelve-month expected credit losses \| Positions that are not credit impaired \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.06%		0.06%
Twelve-month expected credit losses \| Positions that are not credit impaired \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.09%		0.09%
Twelve-month expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.27%		0.10%
Twelve-month expected credit losses \| Positions that are not credit impaired \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.19%		0.15%
Twelve-month expected credit losses \| Positions that are not credit impaired \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.01%		0.00%
Twelve-month expected credit losses \| Positions that are not credit impaired \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.08%		0.05%
Twelve-month expected credit losses \| Positions that are not credit impaired \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.08%		0.05%
Twelve-month expected credit losses \| Positions that are not credit impaired \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	$ 672,021		$ 564,765
Twelve-month expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	663,763		558,420
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	356,948		309,499
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	138,769		124,063
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	37,568		32,932
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	12,658		9,184
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	11,990		9,817
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	133,795		112,796
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	1,198		1,314
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	3,214		2,826
Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	26,377		21,953
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	1,982		2,341
Twelve-month expected credit losses \| Positions that are not credit impaired \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	$ 8,258		$ 6,345
Lifetime expected credit losses \| Positions that are not credit impaired \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.16%		1.00%
Lifetime expected credit losses \| Positions that are not credit impaired \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		1.85%		3.90%
Lifetime expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.92%		0.59%
Lifetime expected credit losses \| Positions that are not credit impaired \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.63%		1.15%
Lifetime expected credit losses \| Positions that are not credit impaired \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.00%		0.00%
Lifetime expected credit losses \| Positions that are not credit impaired \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.44%		0.52%
Lifetime expected credit losses \| Positions that are not credit impaired \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.15%		0.09%
Lifetime expected credit losses \| Positions that are not credit impaired \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	$ 20,873		$ 16,069
Lifetime expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	20,873		16,069
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	20,341		15,538
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	8,448		7,624
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	5,838		5,532
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,029		424
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,254		1,449
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0		0
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	330		325
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	43		8
Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	348		451
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	137		334
Lifetime expected credit losses \| Positions that are not credit impaired \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	$ 0		$ 0
Lifetime expected credit losses \| Credit-impaired positions \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		1.97%		2.45%
Lifetime expected credit losses \| Credit-impaired positions \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.00%		0.00%
Lifetime expected credit losses \| Credit-impaired positions \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		5.65%		13.19%
Lifetime expected credit losses \| Credit-impaired positions \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		7.79%		22.65%
Lifetime expected credit losses \| Credit-impaired positions \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		19.41%		14.03%
Lifetime expected credit losses \| Credit-impaired positions \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.00%		0.00%
Lifetime expected credit losses \| Credit-impaired positions \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		82.79%		27.13%
Lifetime expected credit losses \| Credit-impaired positions \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	$ 2,709		$ 2,326
Lifetime expected credit losses \| Credit-impaired positions \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,709		2,326
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,240		1,749
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	959		959
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	23		17
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	474		94
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	628		521
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	55		98
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	30		22
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	12		10
Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	469		576
Lifetime expected credit losses \| Credit-impaired positions \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	450		202
Lifetime expected credit losses \| Credit-impaired positions \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0		0
Gross carrying amount \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		696,815		584,075
Gross carrying amount \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		688,556		577,730
Gross carrying amount \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		380,589		327,550
Gross carrying amount \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 148,341		$ 132,756
ECL coverage		0.11%		0.08%
Gross carrying amount \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 43,492		$ 38,524
ECL coverage		0.15%		0.11%
Gross carrying amount \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 15,440		$ 9,819
ECL coverage		1.81%		1.19%
Gross carrying amount \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 15,183		$ 12,089
ECL coverage		2.04%		2.51%
Gross carrying amount \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 133,886		$ 112,915
ECL coverage		0.03%		0.02%
Gross carrying amount \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 1,596		$ 1,696
ECL coverage		2.40%		2.05%
Gross carrying amount \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 3,375		$ 2,925
ECL coverage		3.15%		2.78%
Gross carrying amount \| Other loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 19,274		$ 16,824
ECL coverage		0.31%		0.31%
Gross carrying amount \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 27,327		$ 23,123
Gross carrying amount \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 2,677		$ 2,987
ECL coverage		4.04%		3.66%
Gross carrying amount \| Total
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 383,266	[2]	$ 330,536	[3]
ECL coverage		0.30%		0.26%
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 357,090		$ 309,581
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 138,803		$ 124,077
ECL coverage		0.02%		0.01%
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 37,583		$ 32,937
ECL coverage		0.04%		0.02%
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 12,684		$ 9,199
ECL coverage		0.21%		0.16%
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 12,010		$ 9,834
ECL coverage		0.16%		0.18%
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 133,800		$ 112,799
ECL coverage		0.00%		0.00%
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 1,209		$ 1,322
ECL coverage		0.91%		0.60%
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 3,219		$ 2,831
ECL coverage		0.16%		0.17%
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 17,781		$ 16,582
ECL coverage		0.14%		0.09%
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 26,410		$ 21,988
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 2,009		$ 2,370
ECL coverage		1.35%		1.22%
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 359,099		$ 311,951
ECL coverage		0.05%		0.04%
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 20,556		$ 15,661
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 8,540		$ 7,679
ECL coverage		1.08%		0.72%
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 5,883		$ 5,567
ECL coverage		0.75%		0.62%
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 2,069		$ 429
ECL coverage		1.92%		1.00%
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 2,277		$ 1,464
ECL coverage		1.01%		1.04%
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 0		$ 0
ECL coverage		0.00%		0.00%
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 342		$ 339
ECL coverage		3.33%		4.04%
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 43		$ 8
ECL coverage		0.02%		0.03%
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 1,402		$ 176
ECL coverage		0.25%		0.15%
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 357		$ 463
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 142		$ 344
ECL coverage		3.51%		3.05%
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 20,697		$ 16,005
ECL coverage		1.06%		0.83%
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 2,943		$ 2,308
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 998		$ 1,000
ECL coverage		3.90%		4.06%
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 27		$ 21
ECL coverage		14.14%		17.65%
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 686		$ 192
ECL coverage		30.89%		50.88%
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 896		$ 791
ECL coverage		29.91%		34.20%
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 86		$ 116
ECL coverage		35.92%		15.66%
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 46		$ 35
ECL coverage		34.88%		37.18%
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 113		$ 87
ECL coverage		89.39%		88.44%
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Other loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 91		$ 67
ECL coverage		35.63%		57.50%
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 560		$ 672
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 526		$ 272
ECL coverage		14.46%		25.70%
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Total
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 3,470		$ 2,580
ECL coverage		22.47%		24.36%
Allowance for expected credit loss \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ (1,211)		$ (915)
Allowance for expected credit loss \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1,211)		(915)
Allowance for expected credit loss \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1,060)		(764)
Allowance for expected credit loss \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(166)		(110)
Allowance for expected credit loss \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(63)		(43)
Allowance for expected credit loss \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(279)		(117)
Allowance for expected credit loss \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(310)		(303)
Allowance for expected credit loss \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(36)		(22)
Allowance for expected credit loss \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(38)		(35)
Allowance for expected credit loss \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(106)		(81)
Allowance for expected credit loss \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(133)		(143)
Allowance for expected credit loss \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(108)		(109)
Allowance for expected credit loss \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(187)		(124)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(187)		(124)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(142)		(82)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(35)		(15)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(15)		(5)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(27)		(15)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(19)		(17)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(5)		(4)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(11)		(8)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(5)		(5)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(34)		(35)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(27)		(29)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(229)		(137)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(229)		(137)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(215)		(123)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(93)		(55)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(44)		(34)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(40)		(4)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(23)		(15)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(11)		(14)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(9)		(13)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(5)		(11)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(795)		(655)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(795)		(655)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(703)		(559)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(39)		(41)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(4)		(4)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(212)		(98)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(268)		(271)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(31)		(18)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(16)		(13)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(101)		(77)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(90)		(95)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(76)		(70)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 0		$ 0
UBS AG \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.07%		0.07%
UBS AG \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.21%		0.29%
UBS AG \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.46%		0.14%
UBS AG \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.40%		0.53%
UBS AG \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.02%		0.01%
UBS AG \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.09%		0.08%
UBS AG \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.10%		0.05%
UBS AG \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	$ 696,976		$ 584,329
UBS AG \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	688,717		577,985
UBS AG \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	380,977		327,992
UBS AG \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	148,175		132,646
UBS AG \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	43,429		38,481
UBS AG \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	15,161		9,703
UBS AG \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	14,872		11,786
UBS AG \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	133,850		112,893
UBS AG \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	1,558		1,661
UBS AG \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	3,269		2,844
UBS AG \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	27,219		23,012
UBS AG \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,569		2,877
UBS AG \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	$ 8,258		$ 6,345
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.06%		0.06%
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.09%		0.09%
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.27%		0.10%
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.19%		0.15%
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.01%		0.00%
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.08%		0.05%
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.08%		0.05%
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	$ 673,394		$ 565,935
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	665,135		559,590
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	358,396		310,705
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	138,769		124,063
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	37,568		32,932
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	12,658		9,184
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	11,990		9,817
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	133,795		112,796
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	1,198		1,314
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	3,214		2,826
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	26,401		21,985
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	1,982		2,341
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	$ 8,258		$ 6,345
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.16%		1.00%
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		1.85%		3.90%
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.92%		0.59%
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.63%		1.15%
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.00%		0.00%
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.44%		0.52%
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.15%		0.09%
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	$ 20,873		$ 16,069
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	20,873		16,069
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	20,341		15,538
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	8,448		7,624
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	5,838		5,532
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,029		424
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,254		1,449
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0		0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	330		325
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	43		8
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	348		451
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	137		334
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	$ 0		$ 0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		1.97%		2.45%
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.00%		0.00%
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		5.65%		13.19%
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		7.79%		22.65%
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		19.41%		14.03%
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		0.00%		0.00%
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
ECL coverage		82.79%		27.13%
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	$ 2,709		$ 2,326
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,709		2,326
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,240		1,749
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	959		959
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	23		17
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	474		94
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	628		521
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	55		98
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	30		22
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	12		10
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	469		576
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	450		202
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0		0
UBS AG \| Gross carrying amount \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		698,187		585,245
UBS AG \| Gross carrying amount \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		689,929		578,899
UBS AG \| Gross carrying amount \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		382,036		328,756
UBS AG \| Gross carrying amount \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 148,341		$ 132,756
ECL coverage		0.11%		0.08%
UBS AG \| Gross carrying amount \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 43,492		$ 38,524
ECL coverage		0.15%		0.11%
UBS AG \| Gross carrying amount \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 15,440		$ 9,819
ECL coverage		1.81%		1.19%
UBS AG \| Gross carrying amount \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 15,183		$ 12,089
ECL coverage		2.04%		2.51%
UBS AG \| Gross carrying amount \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 133,886		$ 112,915
ECL coverage		0.03%		0.02%
UBS AG \| Gross carrying amount \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 1,596		$ 1,696
ECL coverage		2.40%		2.05%
UBS AG \| Gross carrying amount \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 3,375		$ 2,925
ECL coverage		3.15%		2.78%
UBS AG \| Gross carrying amount \| Other loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 20,722		$ 18,031
ECL coverage		0.29%		0.29%
UBS AG \| Gross carrying amount \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 27,352		$ 23,154
UBS AG \| Gross carrying amount \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 2,677		$ 2,987
ECL coverage		4.04%		3.66%
UBS AG \| Gross carrying amount \| Total
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 384,714	[4]	$ 331,743	[5]
ECL coverage		0.30%		0.26%
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 358,538		$ 310,787
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 138,803		$ 124,077
ECL coverage		0.02%		0.01%
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 37,583		$ 32,937
ECL coverage		0.04%		0.02%
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 12,684		$ 9,199
ECL coverage		0.21%		0.16%
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 12,010		$ 9,834
ECL coverage		0.16%		0.18%
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 133,800		$ 112,799
ECL coverage		0.00%		0.00%
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 1,209		$ 1,322
ECL coverage		0.91%		0.60%
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 3,219		$ 2,831
ECL coverage		0.16%		0.17%
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 19,229		$ 17,788
ECL coverage		0.13%		0.08%
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 26,435		$ 22,019
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 2,009		$ 2,370
ECL coverage		1.35%		1.22%
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 360,547		$ 313,158
ECL coverage		0.05%		0.04%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 20,556		$ 15,661
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 8,540		$ 7,679
ECL coverage		1.08%		0.72%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 5,883		$ 5,567
ECL coverage		0.75%		0.62%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 2,069		$ 429
ECL coverage		1.92%		1.00%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 2,277		$ 1,464
ECL coverage		1.01%		1.04%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 0		$ 0
ECL coverage		0.00%		0.00%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 342		$ 339
ECL coverage		3.33%		4.04%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 43		$ 8
ECL coverage		0.02%		0.03%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 1,402		$ 176
ECL coverage		0.25%		0.15%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 357		$ 463
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 142		$ 344
ECL coverage		3.51%		3.05%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 20,697		$ 16,005
ECL coverage		1.06%		0.83%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 2,943		$ 2,308
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 998		$ 1,000
ECL coverage		3.90%		4.06%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 27		$ 21
ECL coverage		14.14%		17.65%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 686		$ 192
ECL coverage		30.89%		50.88%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 896		$ 791
ECL coverage		29.91%		34.20%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 86		$ 116
ECL coverage		35.92%		15.66%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 46		$ 35
ECL coverage		34.88%		37.18%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 113		$ 87
ECL coverage		89.39%		88.44%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Other loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 91		$ 67
ECL coverage		35.63%		57.50%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 560		$ 672
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 526		$ 272
ECL coverage		14.46%		25.70%
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Total
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 3,470		$ 2,580
ECL coverage		22.47%		24.36%
UBS AG \| Allowance for expected credit loss \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ (1,211)		$ (915)
UBS AG \| Allowance for expected credit loss \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1,211)		(915)
UBS AG \| Allowance for expected credit loss \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1,060)		(764)
UBS AG \| Allowance for expected credit loss \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(166)		(110)
UBS AG \| Allowance for expected credit loss \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(63)		(43)
UBS AG \| Allowance for expected credit loss \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(279)		(117)
UBS AG \| Allowance for expected credit loss \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(310)		(303)
UBS AG \| Allowance for expected credit loss \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(36)		(22)
UBS AG \| Allowance for expected credit loss \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(38)		(35)
UBS AG \| Allowance for expected credit loss \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(106)		(81)
UBS AG \| Allowance for expected credit loss \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(133)		(143)
UBS AG \| Allowance for expected credit loss \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(108)		(109)
UBS AG \| Allowance for expected credit loss \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(187)		(124)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(187)		(124)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(142)		(82)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(35)		(15)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(15)		(5)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(27)		(15)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(19)		(17)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(5)		(4)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(11)		(8)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(5)		(5)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(34)		(35)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(27)		(29)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(229)		(137)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(229)		(137)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(215)		(123)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(93)		(55)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(44)		(34)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(40)		(4)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(23)		(15)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(11)		(14)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(9)		(13)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(5)		(11)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(795)		(655)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(795)		(655)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(703)		(559)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(39)		(41)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(4)		(4)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(212)		(98)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(268)		(271)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(31)		(18)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(16)		(13)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers \| Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(101)		(77)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(90)		(95)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(76)		(70)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 0		$ 0

[1]	The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances.
[2]	Includes Loans and advances to customers of USD 380,589 million and Loans to financial advisors of USD 2,677 million which are presented on the balance sheet line Other assets measured at amortized cost
[3]	Includes Loans and advances to customers of USD 327,550 million and Loans to financial advisors of USD 2,987 million which are presented on the balance sheet line Other assets measured at amortized cost
[4]	Includes Loans and advances to customers of USD 382,036 million and Loans to financial advisors of USD 2,677 million which are presented on the balance sheet line Other assets measured at amortized cost
[5]	Includes Loans and advances to customers of USD 328,756 million and Loans to financial advisors of USD 2,987 million which are presented on the balance sheet line Other assets measured at amortized cost

Expected credit loss measurem_7

Expected credit loss measurement - Coverage ratios (Detail 2) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Provision Matrix [Line Items]
Total exposure		$ 105,116	$ 85,728
Private clients with mortgages
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.07%	0.07%
Total exposure		$ 6,285	$ 5,520
Real estate financing
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.21%	0.29%
Total exposure		$ 7,056	$ 6,046
Large corporate clients
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.46%	0.14%
Total exposure		$ 32,828	$ 26,706
SME clients
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.40%	0.53%
Total exposure		$ 9,121	$ 6,782
Lombard
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.02%	0.01%
Total exposure		$ 14,178	$ 9,902
Credit cards
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.09%	0.08%
Total exposure		$ 8,661	$ 7,890
Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.10%	0.05%
Total exposure		$ 1,683	$ 2,678
Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.26%	0.05%
Total exposure		$ 7,690	$ 9,676
Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure		17,081	18,142
Guarantees \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		3,710	3,687
Guarantees \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		1,310	1,180
Guarantees \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure		641	622
Guarantees \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure		1,441	2,334
Guarantees \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure		7,637	7,966
Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure		41,372	27,547
Irrevocable loan commitments \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		24,209	18,735
Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure		3,247	1,657
Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure		40,134	35,092
Committed unconditionally revocable credit lines \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure		6,328	5,242
Committed unconditionally revocable credit lines \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		4,909	4,274
Committed unconditionally revocable credit lines \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		5,827	4,787
Committed unconditionally revocable credit lines \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure		9,671	7,976
Committed unconditionally revocable credit lines \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure		8,661	7,890
Committed unconditionally revocable credit lines \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure		242	344
Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure		$ 3,282	$ 3,289
Other off-balance sheet commitments
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.13%	0.05%
Total exposure		$ 14,366	$ 8,872
Total
Disclosure Of Provision Matrix [Line Items]
ECL coverage	[1]	0.25%	0.14%
Total exposure	[1]	$ 101,869	$ 84,070
Twelve-month expected credit losses \| Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total exposure		$ 93,337	$ 83,626
Twelve-month expected credit losses \| Positions that are not credit impaired \| Private clients with mortgages
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.06%	0.06%
Total exposure		$ 6,083	$ 5,466
Twelve-month expected credit losses \| Positions that are not credit impaired \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.09%	0.09%
Total exposure		$ 6,576	$ 5,715
Twelve-month expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.27%	0.10%
Total exposure		$ 25,026	$ 26,009
Twelve-month expected credit losses \| Positions that are not credit impaired \| SME clients
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.19%	0.15%
Total exposure		$ 7,239	$ 6,407
Twelve-month expected credit losses \| Positions that are not credit impaired \| Lombard
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.01%	0.00%
Total exposure		$ 14,170	$ 9,895
Twelve-month expected credit losses \| Positions that are not credit impaired \| Credit cards
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.08%	0.05%
Total exposure		$ 8,220	$ 7,535
Twelve-month expected credit losses \| Positions that are not credit impaired \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.08%	0.05%
Total exposure		$ 1,658	$ 2,664
Twelve-month expected credit losses \| Positions that are not credit impaired \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.13%	0.05%
Total exposure		$ 7,242	$ 9,651
Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure		14,687	17,757
Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		2,048	3,461
Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		936	1,055
Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure		633	622
Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure		1,416	2,320
Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure		7,413	7,950
Twelve-month expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure		36,894	27,078
Twelve-month expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		20,195	18,349
Twelve-month expected credit losses \| Positions that are not credit impaired \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure		3,247	1,657
Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure		35,233	33,848
Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure		5,811	4,934
Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		2,783	4,188
Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		4,596	4,589
Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure		9,671	7,975
Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure		8,220	7,535
Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure		242	344
Twelve-month expected credit losses \| Positions that are not credit impaired \| Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure		$ 3,277	$ 3,285
Twelve-month expected credit losses \| Positions that are not credit impaired \| Other off-balance sheet commitments
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.07%	0.04%
Total exposure		$ 13,876	$ 8,626
Twelve-month expected credit losses \| Positions that are not credit impaired \| Total
Disclosure Of Provision Matrix [Line Items]
ECL coverage	[1]	0.13%	0.07%
Total exposure	[1]	$ 90,090	$ 81,969
Lifetime expected credit losses \| Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total exposure		$ 11,396	$ 1,920
Lifetime expected credit losses \| Positions that are not credit impaired \| Private clients with mortgages
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.16%	1.00%
Total exposure		$ 198	$ 51
Lifetime expected credit losses \| Positions that are not credit impaired \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
ECL coverage		1.85%	3.90%
Total exposure		$ 481	$ 326
Lifetime expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.92%	0.59%
Total exposure		$ 7,598	$ 630
Lifetime expected credit losses \| Positions that are not credit impaired \| SME clients
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.63%	1.15%
Total exposure		$ 1,734	$ 273
Lifetime expected credit losses \| Positions that are not credit impaired \| Lombard
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.00%	0.00%
Total exposure		$ 0	$ 0
Lifetime expected credit losses \| Positions that are not credit impaired \| Credit cards
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.44%	0.52%
Total exposure		$ 430	$ 355
Lifetime expected credit losses \| Positions that are not credit impaired \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.15%	0.09%
Total exposure		$ 25	$ 13
Lifetime expected credit losses \| Positions that are not credit impaired \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
ECL coverage		2.48%	0.71%
Total exposure		$ 448	$ 25
Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure		2,225	304
Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		1,549	203
Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		326	67
Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure		25	13
Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure		224	16
Lifetime expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure		4,374	419
Lifetime expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		3,950	359
Lifetime expected credit losses \| Positions that are not credit impaired \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure		4,792	1,197
Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure		517	307
Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		2,099	69
Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		1,169	171
Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure		430	355
Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure		$ 5	$ 0
Lifetime expected credit losses \| Positions that are not credit impaired \| Other off-balance sheet commitments
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.11%	0.34%
Total exposure		$ 482	$ 246
Lifetime expected credit losses \| Positions that are not credit impaired \| Total
Disclosure Of Provision Matrix [Line Items]
ECL coverage	[1]	0.91%	1.20%
Total exposure	[1]	$ 11,396	$ 1,920
Lifetime expected credit losses \| Credit-impaired positions
Disclosure Of Provision Matrix [Line Items]
Total exposure		$ 382	$ 182
Lifetime expected credit losses \| Credit-impaired positions \| Private clients with mortgages
Disclosure Of Provision Matrix [Line Items]
ECL coverage		1.97%	2.45%
Total exposure		$ 3	$ 2
Lifetime expected credit losses \| Credit-impaired positions \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.00%	0.00%
Total exposure		$ 0	$ 4
Lifetime expected credit losses \| Credit-impaired positions \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
ECL coverage		5.65%	13.19%
Total exposure		$ 205	$ 67
Lifetime expected credit losses \| Credit-impaired positions \| SME clients
Disclosure Of Provision Matrix [Line Items]
ECL coverage		7.79%	22.65%
Total exposure		$ 148	$ 101
Lifetime expected credit losses \| Credit-impaired positions \| Lombard
Disclosure Of Provision Matrix [Line Items]
ECL coverage		19.41%	14.03%
Total exposure		$ 8	$ 7
Lifetime expected credit losses \| Credit-impaired positions \| Credit cards
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.00%	0.00%
Total exposure		$ 11	$ 0
Lifetime expected credit losses \| Credit-impaired positions \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
ECL coverage		82.79%	27.13%
Total exposure		$ 0	$ 0
Lifetime expected credit losses \| Credit-impaired positions \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
ECL coverage		1.66%	0.83%
Total exposure		$ 0	$ 0
Lifetime expected credit losses \| Credit-impaired positions \| Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure		170	82
Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		113	24
Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		48	58
Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure		8	0
Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
Lifetime expected credit losses \| Credit-impaired positions \| Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure		104	50
Lifetime expected credit losses \| Credit-impaired positions \| Irrevocable loan commitments \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		64	27
Lifetime expected credit losses \| Credit-impaired positions \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure		108	46
Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		27	17
Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		63	27
Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	1
Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure		11	0
Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
Lifetime expected credit losses \| Credit-impaired positions \| Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure		$ 0	$ 4
Lifetime expected credit losses \| Credit-impaired positions \| Other off-balance sheet commitments
Disclosure Of Provision Matrix [Line Items]
ECL coverage		124.14%	225.92%
Total exposure		$ 8	$ 0
Lifetime expected credit losses \| Credit-impaired positions \| Total
Disclosure Of Provision Matrix [Line Items]
ECL coverage	[1]	8.94%	18.22%
Total exposure	[1]	$ 382	$ 182
UBS AG
Disclosure Of Provision Matrix [Line Items]
Total exposure		$ 107,059	$ 87,614
UBS AG \| Private clients with mortgages
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.07%	0.07%
Total exposure		$ 6,285	$ 5,520
UBS AG \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.21%	0.29%
Total exposure		$ 7,056	$ 6,046
UBS AG \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.46%	0.14%
Total exposure		$ 32,828	$ 26,706
UBS AG \| SME clients
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.40%	0.53%
Total exposure		$ 9,121	$ 6,782
UBS AG \| Lombard
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.02%	0.01%
Total exposure		$ 14,178	$ 9,902
UBS AG \| Credit cards
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.09%	0.08%
Total exposure		$ 8,661	$ 7,890
UBS AG \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.10%	0.05%
Total exposure		$ 1,683	$ 2,678
UBS AG \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.26%	0.05%
Total exposure		$ 7,690	$ 9,676
UBS AG \| Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure		17,081	18,142
UBS AG \| Guarantees \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		3,710	3,687
UBS AG \| Guarantees \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		1,310	1,180
UBS AG \| Guarantees \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure		641	622
UBS AG \| Guarantees \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure		1,441	2,334
UBS AG \| Guarantees \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure		7,637	7,966
UBS AG \| Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure		41,372	27,547
UBS AG \| Irrevocable loan commitments \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		24,209	18,735
UBS AG \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure		3,247	1,657
UBS AG \| Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure		42,077	36,979
UBS AG \| Committed unconditionally revocable credit lines \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure		6,328	5,242
UBS AG \| Committed unconditionally revocable credit lines \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		4,909	4,274
UBS AG \| Committed unconditionally revocable credit lines \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		5,827	4,787
UBS AG \| Committed unconditionally revocable credit lines \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure		9,671	7,976
UBS AG \| Committed unconditionally revocable credit lines \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure		8,661	7,890
UBS AG \| Committed unconditionally revocable credit lines \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure		242	344
UBS AG \| Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure		$ 3,282	$ 3,289
UBS AG \| Other off-balance sheet commitments
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.12%	0.04%
Total exposure		$ 16,309	$ 10,759
UBS AG \| Total
Disclosure Of Provision Matrix [Line Items]
ECL coverage	[1]	0.25%	0.13%
Total exposure	[1]	$ 103,812	$ 85,957
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total exposure		$ 95,281	$ 85,513
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Private clients with mortgages
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.06%	0.06%
Total exposure		$ 6,083	$ 5,466
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.09%	0.09%
Total exposure		$ 6,576	$ 5,715
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.27%	0.10%
Total exposure		$ 25,026	$ 26,009
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| SME clients
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.19%	0.15%
Total exposure		$ 7,239	$ 6,407
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Lombard
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.01%	0.00%
Total exposure		$ 14,170	$ 9,895
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Credit cards
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.08%	0.05%
Total exposure		$ 8,220	$ 7,535
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.08%	0.05%
Total exposure		$ 1,658	$ 2,664
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.13%	0.05%
Total exposure		$ 7,270	$ 9,651
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure		14,687	17,757
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		2,048	3,461
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		936	1,055
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure		633	622
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure		1,416	2,320
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure		7,413	7,950
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure		36,894	27,078
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		20,195	18,349
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure		3,247	1,657
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure		37,176	35,735
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure		5,811	4,934
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		2,783	4,188
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		4,596	4,589
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure		9,671	7,975
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure		8,220	7,535
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure		242	344
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure		$ 3,277	$ 3,285
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other off-balance sheet commitments
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.06%	0.03%
Total exposure		$ 15,792	$ 10,513
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total
Disclosure Of Provision Matrix [Line Items]
ECL coverage	[1]	0.13%	0.07%
Total exposure	[1]	$ 92,034	$ 83,856
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total exposure		$ 11,396	$ 1,920
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Private clients with mortgages
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.16%	1.00%
Total exposure		$ 198	$ 51
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
ECL coverage		1.85%	3.90%
Total exposure		$ 481	$ 326
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.92%	0.59%
Total exposure		$ 7,598	$ 630
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| SME clients
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.63%	1.15%
Total exposure		$ 1,734	$ 273
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Lombard
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.00%	0.00%
Total exposure		$ 0	$ 0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Credit cards
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.44%	0.52%
Total exposure		$ 430	$ 355
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.15%	0.09%
Total exposure		$ 25	$ 13
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
ECL coverage		2.48%	0.71%
Total exposure		$ 448	$ 25
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure		2,225	304
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		1,549	203
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		326	67
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure		25	13
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure		224	16
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure		4,374	419
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		3,950	359
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure		4,792	1,197
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure		517	307
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		2,099	69
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		1,169	171
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure		430	355
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure		$ 5	$ 0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other off-balance sheet commitments
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.11%	0.34%
Total exposure		$ 482	$ 246
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total
Disclosure Of Provision Matrix [Line Items]
ECL coverage	[1]	0.91%	1.20%
Total exposure	[1]	$ 11,396	$ 1,920
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions
Disclosure Of Provision Matrix [Line Items]
Total exposure		$ 382	$ 182
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Private clients with mortgages
Disclosure Of Provision Matrix [Line Items]
ECL coverage		1.97%	2.45%
Total exposure		$ 3	$ 2
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.00%	0.00%
Total exposure		$ 0	$ 4
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
ECL coverage		5.65%	13.19%
Total exposure		$ 205	$ 67
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| SME clients
Disclosure Of Provision Matrix [Line Items]
ECL coverage		7.79%	22.65%
Total exposure		$ 148	$ 101
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Lombard
Disclosure Of Provision Matrix [Line Items]
ECL coverage		19.41%	14.03%
Total exposure		$ 8	$ 7
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Credit cards
Disclosure Of Provision Matrix [Line Items]
ECL coverage		0.00%	0.00%
Total exposure		$ 11	$ 0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
ECL coverage		82.79%	27.13%
Total exposure		$ 0	$ 0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
ECL coverage		1.66%	0.83%
Total exposure		$ 0	$ 0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure		170	82
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		113	24
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		48	58
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure		8	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Guarantees \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure		104	50
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Irrevocable loan commitments \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		64	27
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure		108	46
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		27	17
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure		63	27
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	1
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure		11	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines \| Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure		0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure		$ 0	$ 4
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Other off-balance sheet commitments
Disclosure Of Provision Matrix [Line Items]
ECL coverage		124.14%	225.92%
Total exposure		$ 8	$ 0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Total
Disclosure Of Provision Matrix [Line Items]
ECL coverage	[1]	8.94%	18.22%
Total exposure	[1]	$ 382	$ 182

[1]	Excludes Forward starting reverse repurchase and securities borrowing agreements.

Derivative instruments (Narrati

Derivative instruments (Narrative) (Detail 1) $ in Billions	12 Months Ended
Derivative instruments (Narrative) (Detail 1) $ in Billions	Dec. 31, 2020USD ($)
Disclosure Of Derivative Instruments [Line Items]
Additional contractual obligations related to OTC derivatives required in the event of a one-notch reduction in long-term credit ratings of UBS	$ 0
Additional contractual obligations related to OTC derivatives required in the event of a two-notch reduction in long-term credit ratings of UBS	0.5
Additional contractual obligations related to OTC derivatives required in the event of a three-notch reduction in long-term credit ratings of UBS	1.1
UBS AG
Disclosure Of Derivative Instruments [Line Items]
Additional contractual obligations related to OTC derivatives required in the event of a one-notch reduction in long-term credit ratings of UBS	0
Additional contractual obligations related to OTC derivatives required in the event of a two-notch reduction in long-term credit ratings of UBS	0.5
Additional contractual obligations related to OTC derivatives required in the event of a three-notch reduction in long-term credit ratings of UBS	$ 1.1

Derivative instruments (Detail)

Derivative instruments (Detail) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Derivative financial assets	[1]	$ 159,617	$ 121,841
Notional amounts related to derivative financial assets	[1],[2]	4,479,500	4,772,200
Derivative financial liabilities	[1],[3],[4],[5]	161,102	120,880
Notional amounts related to derivative financial liabilities	[1],[2]	4,429,700	4,657,000
Other amounts values	[1],[2],[6]	11,394,400	12,135,100
Interest rate contracts
Derivative [Line Items]
Derivative financial assets		50,900	42,600
Notional amounts related to derivative financial assets	[2]	928,000	1,020,200
Derivative financial liabilities		43,900	36,600
Notional amounts related to derivative financial liabilities	[2]	880,400	975,200
Other amounts values	[2],[6]	11,291,500	11,999,200
Credit derivative contracts
Derivative [Line Items]
Derivative financial assets		2,400	2,000
Notional amounts related to derivative financial assets	[2]	57,600	70,200
Derivative financial liabilities		2,900	3,000
Notional amounts related to derivative financial liabilities	[2]	64,800	69,900
Foreign exchange contracts
Derivative [Line Items]
Derivative financial assets		68,700	52,500
Notional amounts related to derivative financial assets	[2]	2,951,100	3,173,400
Derivative financial liabilities		70,500	54,000
Notional amounts related to derivative financial liabilities	[2]	2,820,400	2,993,800
Other amounts values	[2],[6]	1,400	1,200
Equity contracts
Derivative [Line Items]
Derivative financial assets		34,800	22,800
Notional amounts related to derivative financial assets	[2]	449,600	420,300
Derivative financial liabilities		41,200	25,500
Notional amounts related to derivative financial liabilities	[2]	581,300	534,500
Other amounts values	[2],[6]	91,300	122,100
Commodity contracts
Derivative [Line Items]
Derivative financial assets		2,200	1,800
Notional amounts related to derivative financial assets	[2]	57,800	56,100
Derivative financial liabilities		2,000	1,700
Notional amounts related to derivative financial liabilities	[2]	49,700	60,000
Other amounts values	[2],[6]	10,100	12,600
Unsettled purchases of non-derivative financial instruments
Derivative [Line Items]
Derivative financial assets	[7]	300	100
Notional amounts related to derivative financial assets	[2],[7]	18,300	16,600
Derivative financial liabilities	[7]	200	100
Notional amounts related to derivative financial liabilities	[2],[7]	10,000	6,900
Unsettled sales of non-derivative financial instruments
Derivative [Line Items]
Derivative financial assets	[7]	200	100
Notional amounts related to derivative financial assets	[2],[7]	17,200	15,400
Derivative financial liabilities	[7]	300	100
Notional amounts related to derivative financial liabilities	[2],[7]	12,900	9,700
Over-the-counter (OTC) contracts \| Loan commitments measured at FVTPL
Derivative [Line Items]
Derivative financial liabilities	[8]	0	0
Notional amounts related to derivative financial liabilities	[2],[8]	10,200	7,100
Forward contracts \| Over-the-counter (OTC) contracts \| Interest rate contracts
Derivative [Line Items]
Derivative financial assets	[9]	0	0
Notional amounts related to derivative financial assets	[2],[9]	19,800	16,300
Derivative financial liabilities	[9]	400	300
Notional amounts related to derivative financial liabilities	[2],[9]	21,900	19,600
Other amounts values	[2],[6],[9]	2,602,500	3,136,800
Forward contracts \| Over-the-counter (OTC) contracts \| Foreign exchange contracts
Derivative [Line Items]
Derivative financial assets		27,300	22,400
Notional amounts related to derivative financial assets	[2]	779,100	935,300
Derivative financial liabilities		29,000	23,400
Notional amounts related to derivative financial liabilities	[2]	853,300	966,600
Forward contracts \| Exchange-traded contracts \| Commodity contracts
Derivative [Line Items]
Notional amounts related to derivative financial assets	[2]	8,000	5,900
Notional amounts related to derivative financial liabilities	[2]	6,300	4,900
Swaps \| Over-the-counter (OTC) contracts \| Interest rate contracts
Derivative [Line Items]
Derivative financial assets		40,800	34,300
Notional amounts related to derivative financial assets	[2]	407,000	454,700
Derivative financial liabilities		30,900	26,200
Notional amounts related to derivative financial liabilities	[2]	364,800	402,900
Other amounts values	[2],[6]	8,105,200	8,086,000
Swaps \| Over-the-counter (OTC) contracts \| Foreign exchange contracts
Derivative [Line Items]
Derivative financial assets		34,300	22,800
Notional amounts related to derivative financial assets	[2]	1,727,300	1,573,200
Derivative financial liabilities		34,400	23,800
Notional amounts related to derivative financial liabilities	[2]	1,567,300	1,418,500
Swaps \| Over-the-counter (OTC) contracts \| Equity contracts
Derivative [Line Items]
Derivative financial assets		6,400	4,000
Notional amounts related to derivative financial assets	[2]	89,400	81,300
Derivative financial liabilities		9,800	5,500
Notional amounts related to derivative financial liabilities	[2]	108,400	96,300
Swaps \| Over-the-counter (OTC) contracts \| Commodity contracts
Derivative [Line Items]
Derivative financial assets		500	400
Notional amounts related to derivative financial assets	[2]	17,700	13,800
Derivative financial liabilities		800	600
Notional amounts related to derivative financial liabilities	[2]	18,000	15,100
Options \| Over-the-counter (OTC) contracts \| Interest rate contracts
Derivative [Line Items]
Derivative financial assets		10,100	8,100
Notional amounts related to derivative financial assets	[2]	447,500	464,800
Derivative financial liabilities		12,500	10,000
Notional amounts related to derivative financial liabilities	[2]	460,500	486,100
Options \| Over-the-counter (OTC) contracts \| Foreign exchange contracts
Derivative [Line Items]
Derivative financial assets		7,100	7,300
Notional amounts related to derivative financial assets	[2]	440,900	660,900
Derivative financial liabilities		7,100	6,800
Notional amounts related to derivative financial liabilities	[2]	394,700	604,900
Options \| Over-the-counter (OTC) contracts \| Equity contracts
Derivative [Line Items]
Derivative financial assets		7,000	5,000
Notional amounts related to derivative financial assets	[2]	87,100	88,600
Derivative financial liabilities		10,900	6,800
Notional amounts related to derivative financial liabilities	[2]	146,200	144,100
Options \| Over-the-counter (OTC) contracts \| Commodity contracts
Derivative [Line Items]
Derivative financial assets		1,000	1,000
Notional amounts related to derivative financial assets	[2]	23,500	27,400
Derivative financial liabilities		700	400
Notional amounts related to derivative financial liabilities	[2]	17,800	23,600
Options \| Exchange-traded contracts \| Interest rate contracts
Derivative [Line Items]
Derivative financial assets		0	0
Notional amounts related to derivative financial assets	[2]	53,600	84,400
Derivative financial liabilities		0	0
Notional amounts related to derivative financial liabilities	[2]	33,100	66,600
Other amounts values	[2],[6]	103,300	229,500
Options \| Exchange-traded contracts \| Equity contracts
Derivative [Line Items]
Derivative financial assets		10,700	7,200
Notional amounts related to derivative financial assets	[2]	273,100	250,400
Derivative financial liabilities		11,300	7,800
Notional amounts related to derivative financial liabilities	[2]	326,800	294,100
Other amounts values	[2],[6]	23,500	37,200
Futures \| Exchange-traded contracts \| Interest rate contracts
Derivative [Line Items]
Other amounts values	[2],[6]	480,600	546,900
Futures \| Exchange-traded contracts \| Equity contracts
Derivative [Line Items]
Other amounts values	[2],[6]	67,900	84,900
Futures \| Exchange-traded contracts \| Commodity contracts
Derivative [Line Items]
Other amounts values	[2],[6]	9,300	12,000
Agency transactions \| Exchange-traded contracts \| Equity contracts
Derivative [Line Items]
Derivative financial assets		10,700	6,600
Derivative financial liabilities		9,100	5,400
Credit default swaps \| Over-the-counter (OTC) contracts \| Credit derivative contracts
Derivative [Line Items]
Derivative financial assets		2,200	1,700
Notional amounts related to derivative financial assets	[2]	53,600	65,000
Derivative financial liabilities		2,600	2,200
Notional amounts related to derivative financial liabilities	[2]	62,300	66,000
Total return swaps \| Over-the-counter (OTC) contracts \| Credit derivative contracts
Derivative [Line Items]
Derivative financial assets		100	300
Notional amounts related to derivative financial assets	[2]	1,900	2,000
Derivative financial liabilities		300	800
Notional amounts related to derivative financial liabilities	[2]	2,500	3,300
UBS AG
Derivative [Line Items]
Derivative financial assets	[10]	159,618	121,843
Notional amounts related to derivative financial assets	[2]	4,479,600	4,772,400
Derivative financial liabilities	[3],[4],[5],[10]	161,102	120,880
Notional amounts related to derivative financial liabilities	[2]	4,429,700	4,657,000
Other amounts values	[2]	11,394,400	12,135,100
UBS AG \| Interest rate contracts
Derivative [Line Items]
Derivative financial assets		50,900	42,600
Notional amounts related to derivative financial assets		928,000	1,020,200
Derivative financial liabilities		43,900	36,600
Notional amounts related to derivative financial liabilities		880,400	975,200
Other amounts values		11,291,500	11,999,200
UBS AG \| Credit derivative contracts
Derivative [Line Items]
Derivative financial assets		2,400	2,000
Notional amounts related to derivative financial assets	[2]	57,600	70,200
Derivative financial liabilities		2,900	3,000
Notional amounts related to derivative financial liabilities	[2]	64,800	69,900
UBS AG \| Foreign exchange contracts
Derivative [Line Items]
Derivative financial assets		68,700	52,500
Notional amounts related to derivative financial assets	[2]	2,951,200	3,173,600
Derivative financial liabilities		70,500	54,000
Notional amounts related to derivative financial liabilities	[2]	2,820,400	2,993,800
Other amounts values	[2]	1,400	1,200
UBS AG \| Equity contracts
Derivative [Line Items]
Derivative financial assets		34,800	22,800
Notional amounts related to derivative financial assets	[2]	449,600	420,300
Derivative financial liabilities		41,200	25,500
Notional amounts related to derivative financial liabilities	[2]	581,300	534,500
Other amounts values	[2]	91,300	122,100
UBS AG \| Commodity contracts
Derivative [Line Items]
Derivative financial assets		2,200	1,800
Notional amounts related to derivative financial assets	[2]	57,800	56,100
Derivative financial liabilities		2,000	1,700
Notional amounts related to derivative financial liabilities	[2]	49,700	60,000
Other amounts values	[2]	10,100	12,600
UBS AG \| Unsettled purchases of non-derivative financial instruments
Derivative [Line Items]
Derivative financial assets		300	100
Notional amounts related to derivative financial assets	[2]	18,300	16,600
Derivative financial liabilities		200	100
Notional amounts related to derivative financial liabilities	[2]	10,000	6,900
UBS AG \| Unsettled sales of non-derivative financial instruments
Derivative [Line Items]
Derivative financial assets		200	100
Notional amounts related to derivative financial assets	[2]	17,200	15,400
Derivative financial liabilities		300	100
Notional amounts related to derivative financial liabilities	[2]	12,900	9,700
UBS AG \| Over-the-counter (OTC) contracts \| Loan commitments measured at FVTPL
Derivative [Line Items]
Derivative financial liabilities	[11]	0	0
Notional amounts related to derivative financial liabilities	[2],[11]	10,200	7,100
UBS AG \| Forward contracts \| Over-the-counter (OTC) contracts \| Interest rate contracts
Derivative [Line Items]
Derivative financial assets	[9]	0	0
Notional amounts related to derivative financial assets	[2],[9]	19,800	16,300
Derivative financial liabilities	[9]	400	300
Notional amounts related to derivative financial liabilities	[2],[9]	21,900	19,600
Other amounts values	[2],[9]	2,602,500	3,136,800
UBS AG \| Forward contracts \| Over-the-counter (OTC) contracts \| Foreign exchange contracts
Derivative [Line Items]
Derivative financial assets		27,300	22,400
Notional amounts related to derivative financial assets	[2]	779,200	935,500
Derivative financial liabilities		29,000	23,400
Notional amounts related to derivative financial liabilities	[2]	853,300	966,600
UBS AG \| Forward contracts \| Exchange-traded contracts \| Commodity contracts
Derivative [Line Items]
Derivative financial assets		0	0
Notional amounts related to derivative financial assets	[2]	8,000	5,900
Derivative financial liabilities		0	0
Notional amounts related to derivative financial liabilities	[2]	6,300	4,900
UBS AG \| Swaps \| Over-the-counter (OTC) contracts \| Interest rate contracts
Derivative [Line Items]
Derivative financial assets		40,800	34,300
Notional amounts related to derivative financial assets	[2]	407,000	454,700
Derivative financial liabilities		30,900	26,200
Notional amounts related to derivative financial liabilities	[2]	364,800	402,900
Other amounts values	[2]	8,105,200	8,086,000
UBS AG \| Swaps \| Over-the-counter (OTC) contracts \| Foreign exchange contracts
Derivative [Line Items]
Derivative financial assets		34,300	22,800
Notional amounts related to derivative financial assets	[2]	1,727,300	1,573,200
Derivative financial liabilities		34,400	23,800
Notional amounts related to derivative financial liabilities	[2]	1,567,300	1,418,500
UBS AG \| Swaps \| Over-the-counter (OTC) contracts \| Equity contracts
Derivative [Line Items]
Derivative financial assets		6,400	4,000
Notional amounts related to derivative financial assets	[2]	89,400	81,300
Derivative financial liabilities		9,800	5,500
Notional amounts related to derivative financial liabilities	[2]	108,400	96,300
UBS AG \| Swaps \| Over-the-counter (OTC) contracts \| Commodity contracts
Derivative [Line Items]
Derivative financial assets		500	400
Notional amounts related to derivative financial assets	[2]	17,700	13,800
Derivative financial liabilities		800	600
Notional amounts related to derivative financial liabilities	[2]	18,000	15,100
UBS AG \| Options \| Over-the-counter (OTC) contracts \| Interest rate contracts
Derivative [Line Items]
Derivative financial assets		10,100	8,100
Notional amounts related to derivative financial assets	[2]	447,500	464,800
Derivative financial liabilities		12,500	10,000
Notional amounts related to derivative financial liabilities	[2]	460,500	486,100
UBS AG \| Options \| Over-the-counter (OTC) contracts \| Foreign exchange contracts
Derivative [Line Items]
Derivative financial assets		7,100	7,300
Notional amounts related to derivative financial assets	[2]	440,900	660,900
Derivative financial liabilities		7,100	6,800
Notional amounts related to derivative financial liabilities	[2]	394,700	604,900
UBS AG \| Options \| Over-the-counter (OTC) contracts \| Equity contracts
Derivative [Line Items]
Derivative financial assets		7,000	5,000
Notional amounts related to derivative financial assets	[2]	87,100	88,600
Derivative financial liabilities		10,900	6,800
Notional amounts related to derivative financial liabilities	[2]	146,200	144,100
UBS AG \| Options \| Over-the-counter (OTC) contracts \| Commodity contracts
Derivative [Line Items]
Derivative financial assets		1,000	1,000
Notional amounts related to derivative financial assets	[2]	23,500	27,400
Derivative financial liabilities		700	400
Notional amounts related to derivative financial liabilities	[2]	17,800	23,600
UBS AG \| Options \| Exchange-traded contracts \| Interest rate contracts
Derivative [Line Items]
Derivative financial assets		0	0
Notional amounts related to derivative financial assets	[2]	53,600	84,400
Derivative financial liabilities		0	0
Notional amounts related to derivative financial liabilities	[2]	33,100	66,600
Other amounts values	[2]	103,300	229,500
UBS AG \| Options \| Exchange-traded contracts \| Equity contracts
Derivative [Line Items]
Derivative financial assets		10,700	7,200
Notional amounts related to derivative financial assets	[2]	273,100	250,400
Derivative financial liabilities		11,300	7,800
Notional amounts related to derivative financial liabilities	[2]	326,800	294,100
Other amounts values	[2]	23,500	37,200
UBS AG \| Futures \| Exchange-traded contracts \| Interest rate contracts
Derivative [Line Items]
Other amounts values	[2]	480,600	546,900
UBS AG \| Futures \| Exchange-traded contracts \| Equity contracts
Derivative [Line Items]
Other amounts values	[2]	67,900	84,900
UBS AG \| Futures \| Exchange-traded contracts \| Commodity contracts
Derivative [Line Items]
Other amounts values	[2]	9,300	12,000
UBS AG \| Agency transactions \| Exchange-traded contracts \| Equity contracts
Derivative [Line Items]
Derivative financial assets	[12]	10,700	6,600
Derivative financial liabilities	[12]	9,100	5,400
UBS AG \| Credit default swaps \| Over-the-counter (OTC) contracts \| Credit derivative contracts
Derivative [Line Items]
Derivative financial assets		2,200	1,700
Notional amounts related to derivative financial assets	[2]	53,600	65,000
Derivative financial liabilities		2,600	2,200
Notional amounts related to derivative financial liabilities	[2]	62,300	66,000
UBS AG \| Total return swaps \| Over-the-counter (OTC) contracts \| Credit derivative contracts
Derivative [Line Items]
Derivative financial assets		100	300
Notional amounts related to derivative financial assets	[2]	1,900	2,000
Derivative financial liabilities		300	800
Notional amounts related to derivative financial liabilities	[2]	$ 2,500	$ 3,300

[1]	Derivative financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of the entity and all of the counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. Refer to Note 22 for more information on netting arrangements.
[2]	In cases where derivative financial instruments are presented on a net basis on the balance sheet, the respective notional amounts of the netted derivative financial instruments are still presented on a gross basis.
[3]	Carrying amount is fair value. Management believes that this best represents the cash flows that would have to be paid if these positions had to be settled or closed out.
[4]	Except for financial liabilities at fair value held for trading and derivative financial instruments (see footnote 3), the amounts presented generally represent undiscounted cash flows of future interest and principal payments
[5]	Includes USD 32 million (2019: 0 million) related to fair values of derivative loan commitments and forward starting reverse repurchase agreements classified as derivatives, presented within “Due within 1 month”. The full contractual committed amount of USD 31.3 billion (2019: USD 26.6 billion) is presented in Note 10 under notional amounts.
[6]	Other notional amounts relate to derivatives that are cleared through either a central counterparty or an exchange. The fair value of these derivatives is presented on the balance sheet net of the corresponding cash margin under Cash collateral receivables on derivative instruments and Cash collateral payables on derivative instruments and was not material for all periods presented.
[7]	Changes in the fair value of purchased and sold non-derivative financial instruments between trade date and settlement date are recognized as derivative financial instruments.
[8]	These notional amounts relate to derivative loan commitments that were previously presented in the former Note 34 under loan commitments measured at fair value (refer to the “Consolidated financial statements” section of the Annual Report 2019 for more information). Starting with this report, the presentation of these notionals has been aligned with the fair values of the derivative loan commitments presented in this table and prior periods have been amended to ensure comparability.
[9]	Includes certain forward starting repurchase and reverse repurchase agreements that are classified as measured at fair value through profit or loss and are recognized within derivative instruments. The notional amounts related to these instruments were previously presented in the former Note 34 under Forward starting transactions (refer to the “Consolidated financial statements” section of the Annual Report 2019 for more information). Starting with this report, the presentation of these notionals has been aligned with the fair values presented in this table and prior periods have been amended to ensure comparability
[10]	Financial assets and liabilities are presented net on the balance sheet if UBS AG has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of the entity and all of the counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. Refer to Note 25 for more information on netting arrangements.
[11]	These notional amounts relate to derivative loan commitments that were previously presented in the former Note 34 under loan commitments measured at fair value (refer to the “Consolidated financial statements” section of the Annual Report 2019 for more information). Starting with this report, the presentation of these notionals has been aligned with the fair values of the derivative loan commitments presented in this table and prior periods have been amended to ensure comparability.
[12]	Notional amounts of exchange-traded agency transactions and OTC-cleared transactions entered into on behalf of clients are not disclosed as they have a significantly different risk profile.

Derivative instruments (Narra_2

Derivative instruments (Narrative) (Detail 2) - Interest rate swap contract - Over-the-counter	Dec. 31, 2020	Dec. 31, 2019
Within 1 year
Maturity Profile Of Derivatives Notionals [Line Items]
Maturity profile of derivatives based on notional amount	50.00%	54.00%
Due between 1 and 5 years
Maturity Profile Of Derivatives Notionals [Line Items]
Maturity profile of derivatives based on notional amount	30.00%	28.00%
Due after 5 years
Maturity Profile Of Derivatives Notionals [Line Items]
Maturity profile of derivatives based on notional amount	20.00%	18.00%
UBS AG \| Within 1 year
Maturity Profile Of Derivatives Notionals [Line Items]
Maturity profile of derivatives based on notional amount	50.00%	54.00%
UBS AG \| Due between 1 and 5 years
Maturity Profile Of Derivatives Notionals [Line Items]
Maturity profile of derivatives based on notional amount	30.00%	28.00%
UBS AG \| Due after 5 years
Maturity Profile Of Derivatives Notionals [Line Items]
Maturity profile of derivatives based on notional amount	20.00%	18.00%

Financial assets measured at _3

Financial assets measured at fair value through OCI (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Debt instruments
Government and government agencies	[1]	$ 8,155	$ 6,162
of which: USA	[1]	7,727	5,814
Banks	[1]	103	178
Corporates and other	[1]	0	4
Total financial assets measured at fair value through other comprehensive income	[1]	8,258	6,345
Unrealized gains - before tax	[1]	204	41
Unrealized (losses) - before tax	[1]	(4)	(25)
Net unrealized gains / (losses) - before tax	[1]	200	16
Net unrealized gains / (losses) - after tax	[1]	151	15
UBS AG
Debt instruments
Government and government agencies	[1]	8,155	6,162
of which: USA	[1]	7,727	5,814
Banks	[1]	103	178
Corporates and other	[1]	0	4
Total financial assets measured at fair value through other comprehensive income	[1]	8,258	6,345
Unrealized gains - before tax	[1]	204	41
Unrealized (losses) - before tax	[1]	(4)	(25)
Net unrealized gains / (losses) - before tax	[1]	200	16
Net unrealized gains / (losses) - after tax	[1]	$ 151	$ 15

[1]	Refer to Note 21c for more information about product type and fair value hierarchy categorization. Refer also to Note 9 and Note 20 for more information about expected credit loss measurement.

Property, equipment and softw_3

Property, equipment and software (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		$ 12,804		$ 12,702
Balance at the end of the year		13,109		12,804
Net gains / (losses) arising from sale-and-leaseback transactions		140
Internally generated software in progress		855
Own use properties in progress		92
Leasehold improvements in progress		89
Cash outflows on lease		679		641
Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		24,431		23,321
Additions		2,312		1,931
Disposals / write-offs	[1]	(990)		(636)
Reclassifications	[2]	(590)		(398)
Foreign currency translation		1,074		213
Balance at the end of the year		26,238		24,431
Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		11,628		10,619
Depreciation		1,997		1,728
Impairment	[3]	72		37
Disposals / write-offs	[1]	(855)		(614)
Reclassifications	[2]	(328)		(254)
Foreign currency translation		616		112
Balance at the end of the year		13,129		11,628
Owned properties
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		3,184
Balance at the end of the year		3,073		3,184
Owned properties \| Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		7,650
Additions		26
Disposals / write-offs	[1]	(315)
Reclassifications	[2]	(461)
Foreign currency translation		686
Balance at the end of the year		7,586		7,650
Owned properties \| Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		4,466
Depreciation		173
Impairment	[3]	0
Disposals / write-offs	[1]	(200)
Reclassifications	[2]	(332)
Foreign currency translation		406
Balance at the end of the year		4,513		4,466
Leased properties
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year	[4]	3,226
Balance at the end of the year	[4]	3,167		3,226
Leased properties \| Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year	[4]	3,745
Additions	[4],[5]	443
Disposals / write-offs	[1],[4]	(8)
Reclassifications	[2],[4]	0
Foreign currency translation	[4]	70
Balance at the end of the year	[4]	4,249		3,745
Leased properties \| Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year	[4]	519
Depreciation	[4]	535
Impairment	[3],[4]	4
Disposals / write-offs	[1],[4]	(3)
Reclassifications	[2],[4]	0
Foreign currency translation	[4]	28
Balance at the end of the year	[4]	1,082		519
Leasehold improvements
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		1,236
Balance at the end of the year		1,258		1,236
Leasehold improvements \| Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		3,004
Additions		37
Disposals / write-offs	[1]	(169)
Reclassifications	[2]	217
Foreign currency translation		85
Balance at the end of the year		3,174		3,004
Leasehold improvements \| Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		1,768
Depreciation		236
Impairment	[3]	1
Disposals / write-offs	[1]	(164)
Reclassifications	[2]	5
Foreign currency translation		70
Balance at the end of the year		1,917		1,768
IT hardware and communication equipment
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		506
Balance at the end of the year		560		506
IT hardware and communication equipment \| Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		1,559
Additions		192
Disposals / write-offs	[1]	(245)
Reclassifications	[2]	11
Foreign currency translation		65
Balance at the end of the year		1,581		1,559
IT hardware and communication equipment \| Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		1,053
Depreciation		170
Impairment	[3]	0
Disposals / write-offs	[1]	(243)
Reclassifications	[2]	0
Foreign currency translation		41
Balance at the end of the year		1,021		1,053
Internally generated software
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		3,270
Balance at the end of the year		3,630		3,270
Internally generated software \| Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		6,176
Additions		131
Disposals / write-offs	[1]	(135)
Reclassifications	[2]	1,015
Foreign currency translation		75
Balance at the end of the year		7,262		6,176
Internally generated software \| Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		2,906
Depreciation		753
Impairment	[3]	67
Disposals / write-offs	[1]	(129)
Reclassifications	[2]	0
Foreign currency translation		35
Balance at the end of the year		3,631		2,906
Purchased software
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		126
Balance at the end of the year		150		126
Purchased software \| Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		485
Additions		75
Disposals / write-offs	[1]	(76)
Reclassifications	[2]	3
Foreign currency translation		19
Balance at the end of the year		506		485
Purchased software \| Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		358
Depreciation		61
Impairment	[3]	0
Disposals / write-offs	[1]	(76)
Reclassifications	[2]	0
Foreign currency translation		13
Balance at the end of the year		356		358
Other machines and equipment
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		241
Balance at the end of the year		235		241
Other machines and equipment \| Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		799
Additions		20
Disposals / write-offs	[1]	(42)
Reclassifications	[2]	34
Foreign currency translation		31
Balance at the end of the year		843		799
Other machines and equipment \| Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		559
Depreciation		69
Impairment	[3]	0
Disposals / write-offs	[1]	(42)
Reclassifications	[2]	0
Foreign currency translation		23
Balance at the end of the year		608		559
Projects in progress
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		1,014
Balance at the end of the year		1,036	[6]	1,014
Projects in progress \| Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		1,014
Additions		1,389
Disposals / write-offs	[1]	0
Reclassifications	[2]	(1,410)
Foreign currency translation		43
Balance at the end of the year		1,036		1,014
Projects in progress \| Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		0
Depreciation		0
Impairment	[3]	0
Disposals / write-offs	[1]	0
Reclassifications	[2]	0
Foreign currency translation		0
Balance at the end of the year		0		0
UBS AG
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		11,826		11,742
Balance at the end of the year		11,958		11,826
Net gains / (losses) arising from sale-and-leaseback transactions		140
Internally generated software in progress		762
Own use properties in progress		63
Leasehold improvements in progress		81
Cash outflows on lease		652		614
UBS AG \| Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		22,329		21,365
Additions		1,989		1,740
Disposals / write-offs	[7]	(867)		(554)
Reclassifications	[8]	(590)		(391)
Foreign currency translation		924		169
Balance at the end of the year		23,785		22,329
UBS AG \| Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		10,503		9,623
Depreciation		1,779		1,542
Impairment	[9]	72		34
Disposals / write-offs	[7]	(735)		(533)
Reclassifications	[8]	(328)		(248)
Foreign currency translation		535		86
Balance at the end of the year		11,827		10,503
UBS AG \| Owned properties
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		2,914
Balance at the end of the year		2,796		2,914
UBS AG \| Owned properties \| Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		6,988
Additions		25
Disposals / write-offs	[7]	(315)
Reclassifications	[8]	(469)
Foreign currency translation		633
Balance at the end of the year		6,863		6,988
UBS AG \| Owned properties \| Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		4,074
Depreciation		152
Impairment	[9]	0
Disposals / write-offs	[7]	(199)
Reclassifications	[8]	(332)
Foreign currency translation		372
Balance at the end of the year		4,067		4,074
UBS AG \| Leased properties
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year	[10]	3,149
Balance at the end of the year	[10]	3,072		3,149
UBS AG \| Leased properties \| Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year	[10]	3,630
Additions	[10],[11]	401
Disposals / write-offs	[7],[10]	(8)
Reclassifications	[8],[10]	0
Foreign currency translation	[10]	68
Balance at the end of the year	[10]	4,091		3,630
UBS AG \| Leased properties \| Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year	[10]	481
Depreciation	[10]	512
Impairment	[9],[10]	4
Disposals / write-offs	[7],[10]	(3)
Reclassifications	[8],[10]	0
Foreign currency translation	[10]	26
Balance at the end of the year	[10]	1,019		481
UBS AG \| Leasehold improvements
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		1,188
Balance at the end of the year		1,209		1,188
UBS AG \| Leasehold improvements \| Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		2,917
Additions		36
Disposals / write-offs	[7]	(169)
Reclassifications	[8]	208
Foreign currency translation		84
Balance at the end of the year		3,077		2,917
UBS AG \| Leasehold improvements \| Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		1,729
Depreciation		226
Impairment	[9]	1
Disposals / write-offs	[7]	(164)
Reclassifications	[8]	6
Foreign currency translation		69
Balance at the end of the year		1,868		1,729
UBS AG \| IT hardware and communication equipment
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		254
Balance at the end of the year		264		254
UBS AG \| IT hardware and communication equipment \| Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		963
Additions		90
Disposals / write-offs	[7]	(155)
Reclassifications	[8]	8
Foreign currency translation		26
Balance at the end of the year		931		963
UBS AG \| IT hardware and communication equipment \| Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		710
Depreciation		92
Impairment	[9]	0
Disposals / write-offs	[7]	(155)
Reclassifications	[8]	0
Foreign currency translation		21
Balance at the end of the year		668		710
UBS AG \| Internally generated software
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		3,082
Balance at the end of the year		3,425		3,082
UBS AG \| Internally generated software \| Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		5,817
Additions		156
Disposals / write-offs	[7]	(133)
Reclassifications	[8]	937
Foreign currency translation		46
Balance at the end of the year		6,824		5,817
UBS AG \| Internally generated software \| Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		2,735
Depreciation		703
Impairment	[9]	67
Disposals / write-offs	[7]	(126)
Reclassifications	[8]	0
Foreign currency translation		20
Balance at the end of the year		3,398		2,735
UBS AG \| Purchased software
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		69
Balance at the end of the year		65		69
UBS AG \| Purchased software \| Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		302
Additions		24
Disposals / write-offs	[7]	(46)
Reclassifications	[8]	1
Foreign currency translation		6
Balance at the end of the year		287		302
UBS AG \| Purchased software \| Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		233
Depreciation		30
Impairment	[9]	0
Disposals / write-offs	[7]	(46)
Reclassifications	[8]	0
Foreign currency translation		6
Balance at the end of the year		222		233
UBS AG \| Other machines and equipment
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		227
Balance at the end of the year		220		227
UBS AG \| Other machines and equipment \| Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		768
Additions		18
Disposals / write-offs	[7]	(41)
Reclassifications	[8]	30
Foreign currency translation		31
Balance at the end of the year		806		768
UBS AG \| Other machines and equipment \| Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		541
Depreciation		64
Impairment	[9]	0
Disposals / write-offs	[7]	(41)
Reclassifications	[8]	0
Foreign currency translation		22
Balance at the end of the year		585		541
UBS AG \| Projects in progress
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		943
Balance at the end of the year		907	[12]	943
UBS AG \| Projects in progress \| Historical cost
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		943
Additions		1,239
Disposals / write-offs	[7]	0
Reclassifications	[8]	(1,305)
Foreign currency translation		30
Balance at the end of the year		907		943
UBS AG \| Projects in progress \| Accumulated depreciation
Disclosure Of Property Equipment Software [Line Items]
Balance at the beginning of the year		0
Depreciation		0
Impairment	[9]	0
Disposals / write-offs	[7]	0
Reclassifications	[8]	0
Foreign currency translation		0
Balance at the end of the year		$ 0		$ 0

[1]	Includes write-offs of fully depreciated assets.
[2]	The total net reclassification amount for the respective periods represents reclassifications to Properties and other non-current assets held for sale.
[3]	Impairment charges recorded in 2020 generally relate to assets that are no longer used for which the recoverable amount based on a value in use approach was determined to be zero. Includes the impairment of internally generated software resulting from a decision in the fourth quarter of 2020 to not proceed with an internal business transfer from UBS Switzerland AG to UBS AG.
[4]	Represents right-of-use assets recognized by UBS as lessee. Includes immaterial leased IT equipment. The total cash outflow for leases during 2020 was USD 679 million (2019: USD 641 million). Interest expense on lease liabilities is included within Interest expense from financial instruments measured at amortized cost and Lease liabilities are included within Other financial liabilities measured at amortized cost. Refer to Notes 3 and 19a, respectively. Also refer to Note 1 for more information about the nature of UBS’s leasing activities
[5]	In 2020, right-of-use assets included the Additions from sale-and-leaseback transactions, from which UBS recognized net gains of USD 140 million, included within Other income. Refer to Note 5.
[6]	Consists of USD 855 million related to internally generated software, USD 92 million related to Owned properties and USD 89 million related to Leasehold improvements.
[7]	Includes write-offs of fully depreciated assets.
[8]	The total net reclassification amount for the respective periods represents reclassifications to Properties and other non-current assets held for sale.
[9]	Impairment charges recorded in 2020 generally relate to assets that are no longer used for which the recoverable amount based on a value in use approach was determined to be zero. Includes the impairment of internally generated software resulting from a decision in the fourth quarter of 2020 to not proceed with an internal business transfer from UBS Switzerland AG to UBS AG.
[10]	Represents right-of-use assets recognized by UBS AG as lessee. Includes immaterial leased IT equipment. The total cash outflow for leases during 2020 was USD 652 million (2019: USD 614 million). Interest expense on lease liabilities is included within Interest expense from financial instruments measured at amortized cost and Lease liabilities are included within Other financial liabilities measured at amortized cost. Refer to Notes 3 and 19a, respectively. Also refer to Note 1 for more information about the nature of UBS AG’s leasing activities
[11]	In 2020, right-of-use assets included the Additions from sale-and-leaseback transactions, from which UBS AG recognized net gains of USD 140 million, included within Other income. Refer to Note 5.
[12]	Consists of USD 762 million related to internally generated software, USD 81 million related to Leasehold improvements and USD 63 million related to Owned properties.

Goodwill and intangible asset_2

Goodwill and intangible assets (Narrative) (Detail)	12 Months Ended
Goodwill and intangible assets (Narrative) (Detail)	Dec. 31, 2020
Disclosure Of Information For IndividualAsset Or Cash-generating Unit With Significant Amount Of Goodwill Or Intangible Assets With Indefinite Useful Lives [Line Items]
Description of cash-generating unit	UBS considers Asset Management and the Investment Bank, as they are reported in Note 2a, as separate cash-generating units (CGUs), as that is the level at which the performance of investments (and the related goodwill) is reviewed and assessed by management.
Information Whether Recoverable Amount Of Asset Is Fair Value Less Costs To Sell Or Value In Use	The impairment test is performed for each CGU to which goodwill is allocated by comparing the recoverable amount, based on its value in use, with the carrying amount of the respective CGU. An impairment charge is recognized if the carrying amount exceeds the recoverable amount.
Description Of Basis On Which Units Recoverable Amount Has Been Determined	The recoverable amounts are determined using a discounted cash flow model, which has been adapted to use inputs that consider features of the banking business and its regulatory environment. The recoverable amount of a CGU is the sum of the discounted earnings attributable to shareholders from the first three forecast years and the terminal value, adjusted for the effect of the capital assumed to be needed over the next three years and to support growth beyond that period. The terminal value, which covers all periods beyond the third year, is calculated on the basis of the forecast of third-year profit, the discount rate and the long-term growth rate, as well as the implied perpetual capital growth. The carrying amount for each CGU is determined by reference to the Group’s equity attribution framework. Within that framework, which is described in the “Capital, liquidity and funding, and balance sheet” section of this report, UBS attributes equity to the businesses on the basis of their risk-weighted assets and leverage ratio denominator (both metrics include resource allocations from Group Functions to the business divisions), their goodwill and their intangible assets, as well as attributed equity related to certain CET1 deduction items. The framework is primarily used for the purpose of measuring the performance of the businesses and includes certain management assumptions. Attributed equity equals the capital that a CGU requires to conduct its business and is currently considered a reasonable approximation of the carrying amount of the CGUs. The attributed equity methodology is aligned with the business planning process, the inputs from which are used in calculating the recoverable amounts of the respective CGU.
Description Of Key Assumptions On Which Management Has Based Cash Flow Projections	Valuation parameters used within the Group’s impairment test model are linked to external market information, where applicable. The model used to determine the recoverable amount is most sensitive to changes in the forecast earnings available to shareholders in years one to three, to changes in the discount rates and to changes in the long-term growth rate. The applied long-term growth rate is based on long-term economic growth rates for different regions worldwide. Earnings available to shareholders are estimated on the basis of forecast results, which are part of the business plan approved by the Board of Directors. The discount rates are determined by applying a capital asset pricing model-based approach, as well as considering quantitative and qualitative inputs from both internal and external analysts and the view of management. In addition, they take into account regional differences in risk-free rates, at the level of individual CGUs. Consistently, long-term growth rates are determined based on nominal or real GDP growth rate forecasts, depending on the region. Key assumptions used to determine the recoverable amounts of each CGU are tested for sensitivity by applying a reasonably possible change to those assumptions. Forecast earnings available to shareholders were changed by 20%, the discount rates were changed by 1.5 percentage points and the long-term growth rates were changed by 0.75 percentage points. Under all scenarios, reasonably possible changes in key assumptions did not result in an impairment of goodwill or intangible balances reported by Global Wealth Management Americas, Global Wealth Management Switzerland and International, and Asset Management. If the estimated earnings and other assumptions in future periods deviate from the current outlook, the value of goodwill attributable to Global Wealth Management Americas, Global Wealth Management Switzerland and International, and Asset Management may become impaired in the future, giving rise to losses in the income statement. Recognition of any impairment of goodwill would reduce IFRS equity and net profit. It would not affect cash flows and, as goodwill is required to be deducted from capital under the Basel III capital framework, no effect would be expected on the Group’s capital ratios.
Change in forecast earnings available to shareholders used for goodwill impairment sensitivity analysis	20.00%
Change in discount rates used for goodwill impairment sensitivity analysis	1.50%
Change in long-term growth rates used for goodwill impairment sensitivity analysis	0.75%
UBS AG
Disclosure Of Information For IndividualAsset Or Cash-generating Unit With Significant Amount Of Goodwill Or Intangible Assets With Indefinite Useful Lives [Line Items]
Description of cash-generating unit	UBS AG considers Asset Management and the Investment Bank, as they are reported in Note 2a, as separate cash-generating units (CGUs), as that is the level at which the performance of investments (and the related goodwill) is reviewed and assessed by management. Given that a significant amount of goodwill in Global Wealth Management relates to the PaineWebber acquisition in 2000, which mainly affected the Americas portion of the business, this goodwill remains separately monitored by the Americas, despite the formation of Global Wealth Management in 2018. Accordingly, goodwill for Global Wealth Management is separately considered for impairment at the level of two CGUs: Americas; and Switzerland and International (consisting of EMEA, Asia Pacific and Global).
Information Whether Recoverable Amount Of Asset Is Fair Value Less Costs To Sell Or Value In Use	The impairment test is performed for each CGU to which goodwill is allocated by comparing the recoverable amount, based on its value in use, with the carrying amount of the respective CGU. An impairment charge is recognized if the carrying amount exceeds the recoverable amount.
Description Of Basis On Which Units Recoverable Amount Has Been Determined	The recoverable amounts are determined using a discounted cash flow model, which has been adapted to use inputs that consider features of the banking business and its regulatory environment. The recoverable amount of a CGU is the sum of the discounted earnings attributable to shareholders from the first three forecast years and the terminal value, adjusted for the effect of the capital assumed to be needed over the next three years and to support growth beyond that period. The terminal value, which covers all periods beyond the third year, is calculated on the basis of the forecast of third-year profit, the discount rate and the long-term growth rate, as well as the implied perpetual capital growth. The carrying amount for each CGU is determined by reference to the Group’s equity attribution framework. Within that framework, which is described in the “Capital, liquidity and funding, and balance sheet” section of this report, UBS attributes equity to the businesses on the basis of their risk-weighted assets and leverage ratio denominator (both metrics include resource allocations from Group Functions to the business divisions), their goodwill and their intangible assets, as well as attributed equity related to certain CET1 deduction items. The framework is primarily used for the purpose of measuring the performance of the businesses and includes certain management assumptions. Attributed equity equals the capital that a CGU requires to conduct its business and is currently considered a reasonable approximation of the carrying amount of the CGUs. The attributed equity methodology is aligned with the business planning process, the inputs from which are used in calculating the recoverable amounts of the respective CGU.
Description Of Key Assumptions On Which Management Has Based Cash Flow Projections	Valuation parameters used within the UBS AG’s impairment test model are linked to external market information, where applicable. The model used to determine the recoverable amount is most sensitive to changes in the forecast earnings available to shareholders in years one to three, to changes in the discount rates and to changes in the long-term growth rate. The applied long-term growth rate is based on long-term economic growth rates for different regions worldwide. Earnings available to shareholders are estimated on the basis of forecast results, which are part of the business plan approved by the Board of Directors. The discount rates are determined by applying a capital asset pricing model-based approach, as well as considering quantitative and qualitative inputs from both internal and external analysts and the view of management. In addition, they take into account regional differences in risk-free rates, at the level of individual CGUs. Consistently, long-term growth rates are determined based on nominal or real GDP growth rate forecasts, depending on the region. Key assumptions used to determine the recoverable amounts of each CGU are tested for sensitivity by applying a reasonably possible change to those assumptions. Forecast earnings available to shareholders were changed by 20%, the discount rates were changed by 1.5 percentage points and the long-term growth rates were changed by 0.75 percentage points. Under all scenarios, reasonably possible changes in key assumptions did not result in an impairment of goodwill or intangible balances reported by Global Wealth Management Americas, Global Wealth Management Switzerland and International, and Asset Management. If the estimated earnings and other assumptions in future periods deviate from the current outlook, the value of goodwill attributable to Global Wealth Management Americas, Global Wealth Management Switzerland and International, and Asset Management may become impaired in the future, giving rise to losses in the income statement. Recognition of any impairment of goodwill would reduce IFRS equity and net profit. It would not affect cash flows and, as goodwill is required to be deducted from capital under the Basel III capital framework, no effect would be expected on the UBS AG’s capital ratios.
Change in forecast earnings available to shareholders used for goodwill impairment sensitivity analysis	20.00%
Change in discount rates used for goodwill impairment sensitivity analysis	1.50%
Change in long-term growth rates used for goodwill impairment sensitivity analysis	0.75%

Goodwill and intangible asset_3

Goodwill and intangible assets (Detail 1)	Dec. 31, 2020	Dec. 31, 2019
Global Wealth Management Americas
Disclosure Of Information For IndividualAsset Or Cash-generating Unit With Significant Amount Of Goodwill Or Intangible Assets With Indefinite Useful Lives [Line Items]
Growth rates	5.10%	4.20%
Discount rates current year	9.50%
Discount rates previous year		9.50%
Global Wealth Management ex Americas
Disclosure Of Information For IndividualAsset Or Cash-generating Unit With Significant Amount Of Goodwill Or Intangible Assets With Indefinite Useful Lives [Line Items]
Growth rates	3.70%	3.40%
Discount rates current year	8.50%
Discount rates previous year		8.50%
Asset Management
Disclosure Of Information For IndividualAsset Or Cash-generating Unit With Significant Amount Of Goodwill Or Intangible Assets With Indefinite Useful Lives [Line Items]
Growth rates	3.50%	3.00%
Discount rates current year	8.50%
Discount rates previous year		9.00%
Investment Bank
Disclosure Of Information For IndividualAsset Or Cash-generating Unit With Significant Amount Of Goodwill Or Intangible Assets With Indefinite Useful Lives [Line Items]
Growth rates	4.80%	4.00%
Discount rates current year	11.00%
Discount rates previous year		11.00%
UBS AG \| Global Wealth Management Americas
Disclosure Of Information For IndividualAsset Or Cash-generating Unit With Significant Amount Of Goodwill Or Intangible Assets With Indefinite Useful Lives [Line Items]
Growth rates	5.10%	4.20%
Discount rates current year	9.50%
Discount rates previous year		9.50%
UBS AG \| Global Wealth Management ex Americas
Disclosure Of Information For IndividualAsset Or Cash-generating Unit With Significant Amount Of Goodwill Or Intangible Assets With Indefinite Useful Lives [Line Items]
Growth rates	3.70%	3.40%
Discount rates current year	8.50%
Discount rates previous year		8.50%
UBS AG \| Asset Management
Disclosure Of Information For IndividualAsset Or Cash-generating Unit With Significant Amount Of Goodwill Or Intangible Assets With Indefinite Useful Lives [Line Items]
Growth rates	3.50%	3.00%
Discount rates current year	8.50%
Discount rates previous year		9.00%
UBS AG \| Investment Bank
Disclosure Of Information For IndividualAsset Or Cash-generating Unit With Significant Amount Of Goodwill Or Intangible Assets With Indefinite Useful Lives [Line Items]
Growth rates	4.80%	4.00%
Discount rates current year	11.00%
Discount rates previous year		11.00%

Goodwill and intangible asset_4

Goodwill and intangible assets (Detail 2) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		$ 6,469
Balance at the end of the year		6,480	$ 6,469
Recoverable amount of the impaired assets		5
Historical cost
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		7,820	8,018
Additions		147	11
Disposals		(158)	(11)
Write-offs		(35)	(185)
Foreign currency translation		91	(12)
Balance at the end of the year		7,865	7,820
Accumulated amortization and impairment
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		1,351	1,371
Amortization		55	65
Impairment	[1]	2	0
Disposals		0	(8)
Write-offs		(35)	(75)
Foreign currency translation		11	(2)
Balance at the end of the year		1,385	1,351
Goodwill
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		6,272
Additions		0
Disposals		(158)
Foreign currency translation		69
Balance at the end of the year		6,182	6,272
Goodwill \| Historical cost
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		6,272
Disposals	[2]	(158)
Foreign currency translation		69
Balance at the end of the year		6,182	6,272
Intangible assets - Total
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		197
Additions		147
Amortization		55
Impairment		2
Disposals		0
Foreign currency translation		11
Balance at the end of the year		298	197
Intangible assets - Total \| Historical cost
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		1,548
Additions		147
Write-offs		(35)
Foreign currency translation		22
Balance at the end of the year		1,683	1,548
Intangible assets - Total \| Accumulated amortization and impairment
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		1,351
Amortization		55
Impairment	[1]	2
Write-offs		(35)
Foreign currency translation		11
Balance at the end of the year		1,385	1,351
Intangible assets - Infrastructure
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the end of the year	[3]	0
Intangible assets - Infrastructure \| Historical cost
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	[3]	760
Balance at the end of the year	[3]	760	760
Intangible assets - Infrastructure \| Accumulated amortization and impairment
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	[3]	730
Amortization	[3]	30
Balance at the end of the year	[3]	760	730
Intangible assets - Customer relationships, contractual rights and other
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the end of the year		298
Intangible assets - Customer relationships, contractual rights and other \| Historical cost
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		788
Additions	[4]	147
Write-offs		(35)
Foreign currency translation		22
Balance at the end of the year		922	788
Intangible assets - Customer relationships, contractual rights and other \| Accumulated amortization and impairment
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		621
Amortization		25
Impairment	[1]	2
Write-offs		(35)
Foreign currency translation		11
Balance at the end of the year		624	621
UBS AG
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		6,469
Balance at the end of the year		6,480	6,469
Recoverable amount of the impaired assets		5
UBS AG \| Historical cost
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		7,820	8,018
Additions		147	11
Disposals		(158)	(11)
Write-offs		(35)	(185)
Foreign currency translation		91	(12)
Balance at the end of the year		7,865	7,820
UBS AG \| Accumulated amortization and impairment
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		1,351	1,371
Amortization		55	65
Impairment	[1]	2	0
Disposals		0	(8)
Write-offs		(35)	(75)
Foreign currency translation		11	(2)
Balance at the end of the year		1,385	1,351
UBS AG \| Goodwill
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		6,272
Additions		0
Disposals		(158)
Foreign currency translation		69
Balance at the end of the year		6,182	6,272
UBS AG \| Goodwill \| Historical cost
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		6,272
Disposals		(158)
Foreign currency translation		69
Balance at the end of the year		6,182	6,272
UBS AG \| Intangible assets - Total
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		197
Additions		147
Amortization		55
Impairment		2
Disposals		0
Foreign currency translation		11
Balance at the end of the year		298	197
UBS AG \| Intangible assets - Total \| Historical cost
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		1,548
Additions		147
Write-offs		(35)
Foreign currency translation		22
Balance at the end of the year		1,683	1,548
UBS AG \| Intangible assets - Total \| Accumulated amortization and impairment
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		1,351
Amortization		55
Impairment	[1]	2
Write-offs		(35)
Foreign currency translation		11
Balance at the end of the year		1,385	1,351
UBS AG \| Intangible assets - Infrastructure
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the end of the year	[1]	0
UBS AG \| Intangible assets - Infrastructure \| Historical cost
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	[3]	760
Balance at the end of the year	[3]	760	760
UBS AG \| Intangible assets - Infrastructure \| Accumulated amortization and impairment
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	[3]	730
Amortization	[1]	30
Balance at the end of the year	[3]	760	730
UBS AG \| Intangible assets - Customer relationships, contractual rights and other
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the end of the year		298
UBS AG \| Intangible assets - Customer relationships, contractual rights and other \| Historical cost
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		788
Additions		147
Write-offs		(35)
Foreign currency translation		22
Balance at the end of the year		922	788
UBS AG \| Intangible assets - Customer relationships, contractual rights and other \| Accumulated amortization and impairment
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year		621
Amortization		25
Impairment		2
Write-offs		(35)
Foreign currency translation		11
Balance at the end of the year		$ 624	$ 621

[1]	Impairment charges recorded in 2020 relate to assets for which the recoverable amount was determined considering their value in use (recoverable amount of the impaired intangible assets in 2020 was USD 5 million).
[2]	Relates to the sale of a majority stake in Fondcenter AG. Refer to Note 29 for more information.
[3]	Consists of the branch network intangible asset recognized in connection with the acquisition of PaineWebber Group, Inc. 2 Relates to the establishment of a banking partnership with Banco do Brasil. Refer to Note 29 for more information. 3 Relates to the sale of a majority stake in Fondcenter AG. Refer to Note 29 for more information
[4]	Relates to the establishment of a banking partnership with Banco do Brasil. Refer to Note 29 for more information.

Goodwill and intangible asset_5

Goodwill and intangible assets (Detail 3) $ in Millions	12 Months Ended
Goodwill and intangible assets (Detail 3) $ in Millions	Dec. 31, 2020USD ($)
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	$ 6,469
Balance at the end of the year	6,480
Goodwill
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	6,272
Additions	0
Disposals	(158)
Foreign currency translation	69
Balance at the end of the year	6,182
Intangible assets
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	197
Additions	147
Disposals	0
Amortization	(55)
Impairment	(2)
Foreign currency translation	11
Balance at the end of the year	298
Global Wealth Management Americas \| Goodwill
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	3,719
Foreign currency translation	5
Balance at the end of the year	3,724
Global Wealth Management Americas \| Intangible assets
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	92
Amortization	(36)
Impairment	(2)
Foreign currency translation	(9)
Balance at the end of the year	46
Global Wealth Management ex Americas \| Goodwill
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	1,198
Foreign currency translation	34
Balance at the end of the year	1,233
Global Wealth Management ex Americas \| Intangible assets
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	92
Amortization	(12)
Foreign currency translation	7
Balance at the end of the year	88
Asset Management \| Goodwill
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	1,354
Disposals	(158)
Foreign currency translation	30
Balance at the end of the year	1,226
Asset Management \| Intangible assets
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	0
Balance at the end of the year	0
Investment Bank \| Goodwill
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	0
Balance at the end of the year	0
Investment Bank \| Intangible assets
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	5
Additions	147
Amortization	(4)
Foreign currency translation	12
Balance at the end of the year	161
Group Functions \| Goodwill
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the end of the year	0
Group Functions \| Intangible assets
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	7
Amortization	(4)
Balance at the end of the year	4
UBS AG
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	6,469
Balance at the end of the year	6,480
UBS AG \| Goodwill
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	6,272
Additions	0
Disposals	(158)
Foreign currency translation	69
Balance at the end of the year	6,182
UBS AG \| Intangible assets
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	197
Additions	147
Disposals	0
Amortization	(55)
Impairment	(2)
Foreign currency translation	11
Balance at the end of the year	298
UBS AG \| Global Wealth Management Americas \| Goodwill
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	3,719
Foreign currency translation	5
Balance at the end of the year	3,724
UBS AG \| Global Wealth Management Americas \| Intangible assets
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	92
Amortization	(36)
Impairment	(2)
Foreign currency translation	(9)
Balance at the end of the year	46
UBS AG \| Global Wealth Management ex Americas \| Goodwill
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	1,198
Foreign currency translation	34
Balance at the end of the year	1,233
UBS AG \| Global Wealth Management ex Americas \| Intangible assets
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	92
Amortization	(12)
Foreign currency translation	7
Balance at the end of the year	88
UBS AG \| Asset Management \| Goodwill
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	1,354
Disposals	(158)
Foreign currency translation	30
Balance at the end of the year	1,226
UBS AG \| Asset Management \| Intangible assets
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	0
Balance at the end of the year	0
UBS AG \| Investment Bank \| Goodwill
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	0
Balance at the end of the year	0
UBS AG \| Investment Bank \| Intangible assets
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	5
Additions	147
Amortization	(4)
Foreign currency translation	12
Balance at the end of the year	161
UBS AG \| Group Functions \| Goodwill
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the end of the year	0
UBS AG \| Group Functions \| Intangible assets
Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items]
Balance at the beginning of the year	7
Amortization	(4)
Balance at the end of the year	$ 4

Goodwill and intangible asset_6

Goodwill and intangible assets (Detail 4) $ in Millions	Dec. 31, 2020USD ($)
Estimated Aggregated Amortization Expenses [Line Items]
2021	$ 33
2022	28
2023	27
2024	24
2025	23
Thereafter	160
Not amortized due to indefinite useful life	2
Total	298
UBS AG
Estimated Aggregated Amortization Expenses [Line Items]
2021	33
2022	28
2023	27
2024	24
2025	23
Thereafter	160
Not amortized due to indefinite useful life	2
Total	$ 298

Other financial assets measured

Other financial assets measured at amortized cost (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Financial Assets [Line Item]
Debt securities	$ 18,801	$ 14,141
of which: government bills / bonds	9,789	8,492
Loans to financial advisors	2,569	2,877
Fee- and commission-related receivables	2,014	1,521
Finance lease receivables	1,447	1,444
Settlement and clearing accounts	614	587
Accrued interest income	591	742
Other	1,158	1,669
Total other financial assets measured at amortized cost	27,194	22,980
UBS AG
Disclosure Of Financial Assets [Line Item]
Debt securities	18,801	14,141
of which: government bills / bonds	9,789	8,492
Loans to financial advisors	2,569	2,877
Fee- and commission-related receivables	2,014	1,520
Finance lease receivables	1,447	1,444
Settlement and clearing accounts	614	587
Accrued interest income	592	742
Other	1,182	1,701
Total other financial assets measured at amortized cost	$ 27,219	$ 23,012

Other non-financial assets (Det

Other non-financial assets (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Other Non-Financial Assets [Line Items]
Precious metals and other physical commodities	$ 6,264	$ 4,597
Bail deposit	1,418	1,293
Prepaid expenses	1,081	927
VAT and other tax receivables	433	493
Properties and other non-current assets held for sale	246	199
Other	326	346
Total other non-financial assets	9,768	7,856
UBS AG
Other Non-Financial Assets [Line Items]
Precious metals and other physical commodities	6,264	4,597
Bail deposit	1,418	1,293
Prepaid expenses	731	687
VAT and other tax receivables	392	436
Properties and other non-current assets held for sale	246	199
Other	323	335
Total other non-financial assets	$ 9,374	$ 7,547

Amounts due to banks and cust_3

Amounts due to banks and customer deposits (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Deposits From Customers [Line Items]
Amounts due to banks	$ 11,050	$ 6,570
Customer deposits	524,605	448,284
of which: demand deposits	236,447	176,010
of which: retail savings / deposits	220,898	168,581
of which: time deposits	40,290	62,315
of which: fiduciary deposits	26,970	41,378
Total amounts due to banks and customer deposits	535,655	454,854
Increase / (decrease) in customer deposits	76,000
Increase / (decrease) in demand deposits and retail savings / deposits	113,000
Increase / (decrease) in time deposits and fiduciary deposits	(36,000)
Global Wealth Management
Deposits From Customers [Line Items]
Increase / (decrease) in customer deposits	50,000
Personal & Corporate Banking
Deposits From Customers [Line Items]
Increase / (decrease) in customer deposits	26,000
UBS AG
Deposits From Customers [Line Items]
Amounts due to banks	11,050	6,570
Customer deposits	527,929	450,591
of which: demand deposits	237,604	176,972
of which: retail savings / deposits	220,898	168,581
of which: time deposits	42,457	63,659
of which: fiduciary deposits	26,970	41,378
Total amounts due to banks and customer deposits	538,979	$ 457,161
Increase / (decrease) in customer deposits	77,000
Increase / (decrease) in demand deposits and retail savings / deposits	113,000
Increase / (decrease) in time deposits and fiduciary deposits	(36,000)
UBS AG \| Global Wealth Management
Deposits From Customers [Line Items]
Increase / (decrease) in customer deposits	50,000
UBS AG \| Personal & Corporate Banking
Deposits From Customers [Line Items]
Increase / (decrease) in customer deposits	$ 27,000

Funding from Group and other su

Funding from Group and other subsidiaries (Detail) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Funding From Group And Other Subsidiaries [Line Items]
Senior unsecured debt that contributes to total loss-absorbing capacity (TLAC)		$ 1,190	$ 217
High-trigger loss-absorbing additional tier 1 capital instruments		11,837	11,931
Low-trigger loss-absorbing additional tier 1 capital instruments		2,577	2,414
UBS AG
Funding From Group And Other Subsidiaries [Line Items]
Senior unsecured debt that contributes to total loss-absorbing capacity (TLAC)		36,611	30,105
Senior unsecured debt other than TLAC		2,939	3,389
High-trigger loss-absorbing additional tier 1 capital instruments		11,854	11,958
Low-trigger loss-absorbing additional tier 1 capital instruments		2,575	2,415
Total	[1],[2]	$ 53,979	$ 47,866

[1]	Represents funding from UBS Group AG to UBS AG.
[2]	UBS AG has also recognized funding from UBS Group AG and its subsidiaries that is designated at fair value. Refer to Note 19b for more information.

Debt issued designated at fai_3

Debt issued designated at fair value (Detail 1) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Issued debt instruments
Equity-linked	[1]	$ 41,069	$ 41,722
Rates-linked		11,038	16,318
Credit-linked		1,933	1,916
Fixed-rate		3,604	4,636
Commodity-linked		1,497	1,567
Other		2,101	649
of which: debt that contributes to total loss-absorbing capacity		1,190	217
Total debt issued designated at fair value		61,243	66,809
of which: issued by UBS AG with original maturity greater than one year	[2]	46,427	51,031
of which: life-to-date own credit (gain) / loss		$ 418	$ 92
Unsecured portion of issued debt instruments with original maturity greater than one year		100.00%	99.00%
UBS AG
Issued debt instruments
Equity-linked	[3]	$ 41,069	$ 41,722
Rates-linked		11,038	16,318
Credit-linked		1,933	1,916
Fixed-rate		3,604	4,636
Commodity-linked		1,497	1,567
Other		726	432
of which: debt that contributes to total loss-absorbing capacity		36,611	30,105
Total debt issued designated at fair value		59,868	66,592
of which: issued by UBS AG with original maturity greater than one year	[4]	46,427	51,031
of which: life-to-date own credit (gain) / loss		$ 233	$ 82
Unsecured portion of issued debt instruments with original maturity greater than one year		100.00%	99.00%

[1]	Includes investment fund unit-linked instruments issued
[2]	Issued by the legal entity UBS AG. Based on original contractual maturity without considering any early redemption features. 100% of the balance as of 31 December 2020 was unsecured (31 December 2019: more than 99% of the balance was unsecured).
[3]	Includes investment fund unit-linked instruments issued
[4]	Issued by the legal entity UBS AG. Based on original contractual maturity without considering any early redemption features. 100% of the balance as of 31 December 2020 was unsecured (31 December 2019: more than 99% of the balance was unsecured).

Debt issued designated at fai_4

Debt issued designated at fair value (Detail 2) - USD ($) $ in Millions		Dec. 31, 2020		Dec. 31, 2019
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		$ 61,243		$ 66,809
UBS Group AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	1,375		217
UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	58,937		65,668
UBS AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	9,409		10,368
UBS AG \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	49,528		55,299
Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	931		924
Other subsidiaries \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	539		520
Other subsidiaries \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	392		404
2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		22,418
2021 \| UBS Group AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		0
2021 \| UBS Group AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	0
2021 \| UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	22,289
2021 \| UBS AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	4,144
2021 \| UBS AG \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	18,145
2021 \| Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	129
2021 \| Other subsidiaries \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	88
2021 \| Other subsidiaries \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	41
2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		10,423
2022 \| UBS Group AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		0
2022 \| UBS Group AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	0
2022 \| UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	10,231
2022 \| UBS AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	1,473
2022 \| UBS AG \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	8,758
2022 \| Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	192
2022 \| Other subsidiaries \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	7
2022 \| Other subsidiaries \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	185
2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		7,153
2023 \| UBS Group AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		0
2023 \| UBS Group AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	0
2023 \| UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	7,027
2023 \| UBS AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	1,112
2023 \| UBS AG \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	5,915
2023 \| Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	126
2023 \| Other subsidiaries \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	0
2023 \| Other subsidiaries \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	126
2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		2,239
2024 \| UBS Group AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		0
2024 \| UBS Group AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	0
2024 \| UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	2,239
2024 \| UBS AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	512
2024 \| UBS AG \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	1,727
2024 \| Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	0
2024 \| Other subsidiaries \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	0
2024 \| Other subsidiaries \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	0
2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		6,772
2025 \| UBS Group AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		0
2025 \| UBS Group AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	0
2025 \| UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	6,772
2025 \| UBS AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	318
2025 \| UBS AG \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	6,454
2025 \| Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	0
2025 \| Other subsidiaries \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	0
2025 \| Other subsidiaries \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	0
2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		6,708
2026-2030 \| UBS Group AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		0
2026-2030 \| UBS Group AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	0
2026-2030 \| UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	6,286
2026-2030 \| UBS AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	227
2026-2030 \| UBS AG \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	6,058
2026-2030 \| Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	422
2026-2030 \| Other subsidiaries \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	422
2026-2030 \| Other subsidiaries \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	0
Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		5,530
Thereafter \| UBS Group AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		1,375
Thereafter \| UBS Group AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	1,375
Thereafter \| UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	4,094
Thereafter \| UBS AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	1,623
Thereafter \| UBS AG \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	2,471
Thereafter \| Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	61
Thereafter \| Other subsidiaries \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	22
Thereafter \| Other subsidiaries \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	39
UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		59,868		66,592
UBS AG \| UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		58,937	[2]	65,668
UBS AG \| UBS AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		9,409	[2]	10,368
UBS AG \| UBS AG \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		49,528	[2]	55,299
UBS AG \| Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		931		924
UBS AG \| Other subsidiaries \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		539	[3]	520
UBS AG \| Other subsidiaries \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		392	[3]	$ 404
UBS AG \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		22,418
UBS AG \| 2021 \| UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	22,289
UBS AG \| 2021 \| UBS AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	4,144
UBS AG \| 2021 \| UBS AG \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	18,145
UBS AG \| 2021 \| Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	129
UBS AG \| 2021 \| Other subsidiaries \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	88
UBS AG \| 2021 \| Other subsidiaries \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	41
UBS AG \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		10,423
UBS AG \| 2022 \| UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	10,231
UBS AG \| 2022 \| UBS AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	1,473
UBS AG \| 2022 \| UBS AG \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	8,758
UBS AG \| 2022 \| Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	192
UBS AG \| 2022 \| Other subsidiaries \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	7
UBS AG \| 2022 \| Other subsidiaries \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	185
UBS AG \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		7,153
UBS AG \| 2023 \| UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	7,027
UBS AG \| 2023 \| UBS AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	1,112
UBS AG \| 2023 \| UBS AG \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	5,915
UBS AG \| 2023 \| Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	126
UBS AG \| 2023 \| Other subsidiaries \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	0
UBS AG \| 2023 \| Other subsidiaries \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	126
UBS AG \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		2,239
UBS AG \| 2024 \| UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	2,239
UBS AG \| 2024 \| UBS AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	512
UBS AG \| 2024 \| UBS AG \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	1,727
UBS AG \| 2024 \| Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	0
UBS AG \| 2024 \| Other subsidiaries \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	0
UBS AG \| 2024 \| Other subsidiaries \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	0
UBS AG \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		6,772
UBS AG \| 2025 \| UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	6,772
UBS AG \| 2025 \| UBS AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	318
UBS AG \| 2025 \| UBS AG \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	6,454
UBS AG \| 2025 \| Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	0
UBS AG \| 2025 \| Other subsidiaries \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	0
UBS AG \| 2025 \| Other subsidiaries \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	0
UBS AG \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		6,708
UBS AG \| 2026-2030 \| UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	6,286
UBS AG \| 2026-2030 \| UBS AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	227
UBS AG \| 2026-2030 \| UBS AG \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	6,058
UBS AG \| 2026-2030 \| Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	422
UBS AG \| 2026-2030 \| Other subsidiaries \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	422
UBS AG \| 2026-2030 \| Other subsidiaries \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	0
UBS AG \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		4,155
UBS AG \| Thereafter \| UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	4,094
UBS AG \| Thereafter \| UBS AG \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	1,623
UBS AG \| Thereafter \| UBS AG \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	2,471
UBS AG \| Thereafter \| Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	61
UBS AG \| Thereafter \| Other subsidiaries \| Fixed-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	22
UBS AG \| Thereafter \| Other subsidiaries \| Floating-rate \| Non-subordinated debt
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	$ 39

[1]	Comprises instruments issued by the legal entity UBS Group AG
[2]	Comprises instruments issued by the legal entity UBS AG.
[3]	Comprises instruments issued by subsidiaries of UBS AG.

Debt issued measured at amort_3

Debt issued measured at amortized cost (Detail 1) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Financial Liabilities [Line Items]
Certificates of deposit		$ 15,680	$ 5,190
Commercial paper		25,472	14,413
Other short-term debt		5,515	2,235
Short-term debt	[1]	46,666	21,837
Senior unsecured debt that contributes to total loss-absorbing capacity (TLAC)		36,611	30,105
Senior unsecured debt other than TLAC		21,340	25,569
of which: issued by UBS AG with original maturity greater than one year	[2]	18,464	22,349
Covered bonds		2,796	2,633
Subordinated debt		22,157	21,775
of which: high-trigger loss-absorbing additional tier 1 capital instruments		11,837	11,931
of which: low-trigger loss-absorbing additional tier 1 capital instruments		2,577	2,414
of which: low-trigger loss-absorbing tier 2 capital instruments		7,201	6,892
of which: non-Basel III-compliant tier 2 capital instruments		543	540
Debt issued through the Swiss central mortgage institutions		9,660	8,574
Other long-term debt		3	4
Long-term debt	[3]	92,566	88,660
Total debt issued measured at amortized cost	[4]	$ 139,232	$ 110,497
Unsecured portion of senior fixed-rate bonds issued with maturity greater than one year		100.00%	100.00%
UBS AG
Disclosure Of Financial Liabilities [Line Items]
Certificates of deposit		$ 15,680	$ 5,190
Commercial paper		25,472	14,413
Other short-term debt		5,515	2,235
Short-term debt	[5]	46,666	21,837
Senior unsecured debt other than TLAC		18,483	22,356
of which: issued by UBS AG with original maturity greater than one year	[6]	18,464	22,349
Covered bonds		2,796	2,633
Subordinated debt		7,744	7,431
of which: high-trigger loss-absorbing additional tier 1 capital instruments		11,854	11,958
of which: low-trigger loss-absorbing additional tier 1 capital instruments		2,575	2,415
of which: low-trigger loss-absorbing tier 2 capital instruments		7,201	6,892
of which: non-Basel III-compliant tier 2 capital instruments		543	540
Debt issued through the Swiss central mortgage institutions		9,660	8,574
Other long-term debt		3	4
Long-term debt	[7]	38,685	40,998
Total debt issued measured at amortized cost	[4]	$ 85,351	$ 62,835
Unsecured portion of senior fixed-rate bonds issued with maturity greater than one year		100.00%	100.00%

[1]	Debt with an original contractual maturity of less than one year
[2]	Issued by the legal entity UBS AG. Based on original contractual maturity without considering any early redemption features. As of 31 December 2020, 100% of the balance was unsecured (31 December 2019: 100% of the balance was unsecured).
[3]	Debt with an original maturity greater than or equal to one year. The classification of debt issued into short-term and long-term does not consider any early redemption features.
[4]	Net of bifurcated embedded derivatives, the fair value of which was not material for the periods presented.
[5]	Debt with an original contractual maturity of less than one year
[6]	Issued by the legal entity UBS AG. Based on original contractual maturity without considering any early redemption features. As of 31 December 2020, 100% of the balance was unsecured (31 December 2019: 100% of the balance was unsecured).
[7]	Debt with an original maturity greater than or equal to one year. The classification of debt issued into short-term and long-term does not consider any early redemption features.

Debt issued measured at amort_4

Debt issued measured at amortized cost (Detail 2) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		$ 139,232	$ 110,497
2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		56,902
2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		16,482
2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		12,774
2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		9,321
2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		8,250
2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		19,106
Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		16,397
UBS Group AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	53,881	47,662
UBS Group AG \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	2,857
UBS Group AG \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	6,532
UBS Group AG \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	6,337
UBS Group AG \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	5,522
UBS Group AG \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	5,355
UBS Group AG \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	12,864
UBS Group AG \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	14,413
UBS Group AG \| Non-subordinated debt \| Fixed-rate
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	33,578	27,306
UBS Group AG \| Non-subordinated debt \| Fixed-rate \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	1,856
UBS Group AG \| Non-subordinated debt \| Fixed-rate \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	3,894
UBS Group AG \| Non-subordinated debt \| Fixed-rate \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	4,086
UBS Group AG \| Non-subordinated debt \| Fixed-rate \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	5,522
UBS Group AG \| Non-subordinated debt \| Fixed-rate \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	5,355
UBS Group AG \| Non-subordinated debt \| Fixed-rate \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	12,864
UBS Group AG \| Non-subordinated debt \| Fixed-rate \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	0
UBS Group AG \| Non-subordinated debt \| Floating-rate
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	5,890	6,012
UBS Group AG \| Non-subordinated debt \| Floating-rate \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	1,001
UBS Group AG \| Non-subordinated debt \| Floating-rate \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	2,638
UBS Group AG \| Non-subordinated debt \| Floating-rate \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	2,251
UBS Group AG \| Non-subordinated debt \| Floating-rate \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	0
UBS Group AG \| Non-subordinated debt \| Floating-rate \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	0
UBS Group AG \| Non-subordinated debt \| Floating-rate \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	0
UBS Group AG \| Non-subordinated debt \| Floating-rate \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	0
UBS Group AG \| Subordinated debt \| Fixed-rate
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	14,413	14,344
UBS Group AG \| Subordinated debt \| Fixed-rate \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	0
UBS Group AG \| Subordinated debt \| Fixed-rate \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	0
UBS Group AG \| Subordinated debt \| Fixed-rate \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	0
UBS Group AG \| Subordinated debt \| Fixed-rate \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	0
UBS Group AG \| Subordinated debt \| Fixed-rate \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	0
UBS Group AG \| Subordinated debt \| Fixed-rate \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	0
UBS Group AG \| Subordinated debt \| Fixed-rate \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[1]	14,413
UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	75,661	54,247
UBS AG \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	52,893
UBS AG \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	9,022
UBS AG \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	5,398
UBS AG \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	2,693
UBS AG \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	1,684
UBS AG \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	2,663
UBS AG \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	1,309
UBS AG \| Non-subordinated debt \| Fixed-rate
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	52,618	33,696
UBS AG \| Non-subordinated debt \| Fixed-rate \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	40,886
UBS AG \| Non-subordinated debt \| Fixed-rate \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	5,813
UBS AG \| Non-subordinated debt \| Fixed-rate \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	4,224
UBS AG \| Non-subordinated debt \| Fixed-rate \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	0
UBS AG \| Non-subordinated debt \| Fixed-rate \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	386
UBS AG \| Non-subordinated debt \| Fixed-rate \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	0
UBS AG \| Non-subordinated debt \| Fixed-rate \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	1,309
UBS AG \| Non-subordinated debt \| Floating-rate
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		15,299	13,119
UBS AG \| Non-subordinated debt \| Floating-rate \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		12,007
UBS AG \| Non-subordinated debt \| Floating-rate \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		1,155
UBS AG \| Non-subordinated debt \| Floating-rate \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		1,175
UBS AG \| Non-subordinated debt \| Floating-rate \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		0
UBS AG \| Non-subordinated debt \| Floating-rate \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		962
UBS AG \| Non-subordinated debt \| Floating-rate \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		0
UBS AG \| Non-subordinated debt \| Floating-rate \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		0
UBS AG \| Subordinated debt \| Fixed-rate
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	7,744
UBS AG \| Subordinated debt \| Fixed-rate \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	0
UBS AG \| Subordinated debt \| Fixed-rate \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	2,053
UBS AG \| Subordinated debt \| Fixed-rate \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	0
UBS AG \| Subordinated debt \| Fixed-rate \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	2,693
UBS AG \| Subordinated debt \| Fixed-rate \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	335
UBS AG \| Subordinated debt \| Fixed-rate \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	2,663
UBS AG \| Subordinated debt \| Fixed-rate \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	0
Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	9,690	8,588
Other subsidiaries \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	1,152
Other subsidiaries \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	928
Other subsidiaries \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	1,038
Other subsidiaries \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	1,106
Other subsidiaries \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	1,211
Other subsidiaries \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	3,580
Other subsidiaries \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	674
Other subsidiaries \| Non-subordinated debt \| Fixed-rate
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	9,690	8,588
Other subsidiaries \| Non-subordinated debt \| Fixed-rate \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	1,152
Other subsidiaries \| Non-subordinated debt \| Fixed-rate \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	928
Other subsidiaries \| Non-subordinated debt \| Fixed-rate \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	1,038
Other subsidiaries \| Non-subordinated debt \| Fixed-rate \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	1,106
Other subsidiaries \| Non-subordinated debt \| Fixed-rate \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	1,211
Other subsidiaries \| Non-subordinated debt \| Fixed-rate \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	3,580
Other subsidiaries \| Non-subordinated debt \| Fixed-rate \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[3]	674
UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		85,351	62,835
UBS AG \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		54,045
UBS AG \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		9,950
UBS AG \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		6,437
UBS AG \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		3,798
UBS AG \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		2,895
UBS AG \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		6,243
UBS AG \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total		1,983
UBS AG \| UBS AG
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	75,661	54,247
UBS AG \| UBS AG \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	52,893
UBS AG \| UBS AG \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	9,022
UBS AG \| UBS AG \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	5,398
UBS AG \| UBS AG \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	2,693
UBS AG \| UBS AG \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	1,684
UBS AG \| UBS AG \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	2,663
UBS AG \| UBS AG \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	1,309
UBS AG \| UBS AG \| Non-subordinated debt \| Fixed-rate
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	52,618	33,696
UBS AG \| UBS AG \| Non-subordinated debt \| Fixed-rate \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	40,886
UBS AG \| UBS AG \| Non-subordinated debt \| Fixed-rate \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	5,813
UBS AG \| UBS AG \| Non-subordinated debt \| Fixed-rate \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	4,224
UBS AG \| UBS AG \| Non-subordinated debt \| Fixed-rate \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	0
UBS AG \| UBS AG \| Non-subordinated debt \| Fixed-rate \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	386
UBS AG \| UBS AG \| Non-subordinated debt \| Fixed-rate \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	0
UBS AG \| UBS AG \| Non-subordinated debt \| Fixed-rate \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	1,309
UBS AG \| UBS AG \| Non-subordinated debt \| Floating-rate
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	15,299	13,119
UBS AG \| UBS AG \| Non-subordinated debt \| Floating-rate \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	12,007
UBS AG \| UBS AG \| Non-subordinated debt \| Floating-rate \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	1,155
UBS AG \| UBS AG \| Non-subordinated debt \| Floating-rate \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	1,175
UBS AG \| UBS AG \| Non-subordinated debt \| Floating-rate \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	0
UBS AG \| UBS AG \| Non-subordinated debt \| Floating-rate \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	962
UBS AG \| UBS AG \| Non-subordinated debt \| Floating-rate \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	0
UBS AG \| UBS AG \| Non-subordinated debt \| Floating-rate \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	0
UBS AG \| UBS AG \| Subordinated debt \| Fixed-rate
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	7,744	7,431
UBS AG \| UBS AG \| Subordinated debt \| Fixed-rate \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	0
UBS AG \| UBS AG \| Subordinated debt \| Fixed-rate \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	2,053
UBS AG \| UBS AG \| Subordinated debt \| Fixed-rate \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	0
UBS AG \| UBS AG \| Subordinated debt \| Fixed-rate \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	2,693
UBS AG \| UBS AG \| Subordinated debt \| Fixed-rate \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	335
UBS AG \| UBS AG \| Subordinated debt \| Fixed-rate \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	2,663
UBS AG \| UBS AG \| Subordinated debt \| Fixed-rate \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[2]	0
UBS AG \| Other subsidiaries
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[4]	9,690	8,588
UBS AG \| Other subsidiaries \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[4]	1,152
UBS AG \| Other subsidiaries \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[4]	928
UBS AG \| Other subsidiaries \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[4]	1,038
UBS AG \| Other subsidiaries \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[4]	1,106
UBS AG \| Other subsidiaries \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[4]	1,211
UBS AG \| Other subsidiaries \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[4]	3,580
UBS AG \| Other subsidiaries \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[4]	674
UBS AG \| Other subsidiaries \| Non-subordinated debt \| Fixed-rate
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[4]	9,690	$ 8,588
UBS AG \| Other subsidiaries \| Non-subordinated debt \| Fixed-rate \| 2021
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[4]	1,152
UBS AG \| Other subsidiaries \| Non-subordinated debt \| Fixed-rate \| 2022
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[4]	928
UBS AG \| Other subsidiaries \| Non-subordinated debt \| Fixed-rate \| 2023
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[4]	1,038
UBS AG \| Other subsidiaries \| Non-subordinated debt \| Fixed-rate \| 2024
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[4]	1,106
UBS AG \| Other subsidiaries \| Non-subordinated debt \| Fixed-rate \| 2025
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[4]	1,211
UBS AG \| Other subsidiaries \| Non-subordinated debt \| Fixed-rate \| 2026-2030
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[4]	3,580
UBS AG \| Other subsidiaries \| Non-subordinated debt \| Fixed-rate \| Thereafter
Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items]
Total	[4]	$ 674

[1]	Comprises debt issued by the legal entity UBS Group AG
[2]	Comprises debt issued by the legal entity UBS AG.
[3]	Comprises debt issued by subsidiaries of UBS AG.
[4]	Comprises debt issued by subsidiaries of UBS AG.

Debt issued measured at amort_5

Debt issued measured at amortized cost (Narrative) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Debt Issued Held At Amortized Cost [Line Items]
Hedge accounting impact on carrying amount	$ 2,401	$ 1,099
UBS AG
Debt Issued Held At Amortized Cost [Line Items]
Hedge accounting impact on carrying amount	$ 761	$ 574

Provisions (Detail)

Provisions (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Other Provisions [Line Items]
Provisions other than provisions for expected credit losses	$ 2,571	$ 2,861	$ 3,245
Provisions for expected credit losses	257	114
Total provisions	2,828	2,974
UBS AG
Disclosure Of Other Provisions [Line Items]
Provisions other than provisions for expected credit losses	2,534	2,825	$ 3,209
Provisions for expected credit losses	257	114
Total provisions	$ 2,791	$ 2,938

Provisions (Narrative) (Detail)

Provisions (Narrative) (Detail)	12 Months Ended
Provisions (Narrative) (Detail)	Dec. 31, 2020
Disclosure Of Other Provisions [Line Items]
Description of expected timing of outflows	Onerous contracts for property are recognized when UBS is committed to pay for non-lease components, such as utilities, service charges, taxes and maintenance, when a property is vacated or not fully recovered from sub-tenants. Severance-related provisions are used within a short time period but potential changes in amount may be triggered when natural staff attrition reduces the number of people affected by a restructuring event and therefore the estimated costs.
UBS AG
Disclosure Of Other Provisions [Line Items]
Description of expected timing of outflows	Onerous contracts for property are recognized when UBS AG is committed to pay for non-lease components, such as utilities, service charges, taxes and maintenance, when a property is vacated or not fully recovered from sub-tenants. Severance-related provisions are used within a short time period but potential changes in amount may be triggered when natural staff attrition reduces the number of people affected by a restructuring event and therefore the estimated costs.

Provisions - additional informa

Provisions - additional information (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period		$ 2,861		$ 3,245
Increase in provisions recognized in the income statement		472		404
Release of provisions recognized in the income statement		(92)		(123)
Provisions used in conformity with designated purpose		(770)		(659)
Capitalized reinstatement costs		11		1
Reclassifications		0
Foreign currency translation / unwind of discount		88		(8)
Balance at the end of period		2,571		2,861
Personnel related restructuring provisions		18		40
Personnel related provisions for onerous lease contracts		49		61
Litigation, regulatory and similar matters
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period		2,475	[1]	2,827
Increase in provisions recognized in the income statement	[1]	233	[2]	258
Release of provisions recognized in the income statement	[1]	(33)	[2]	(81)
Provisions used in conformity with designated purpose	[1]	(603)	[2]	(518)
Capitalized reinstatement costs	[2]	0
Reclassifications	[1]	0	[2]	0
Foreign currency translation / unwind of discount	[1]	64	[2]	(12)
Balance at the end of period	[1]	2,135	[2]	2,475
Restructuring
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period		106
Increase in provisions recognized in the income statement		101
Release of provisions recognized in the income statement		(13)
Provisions used in conformity with designated purpose		(113)
Capitalized reinstatement costs		0
Reclassifications		(14)
Foreign currency translation / unwind of discount		4
Balance at the end of period		72	[3]	106
Other
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period		280
Increase in provisions recognized in the income statement	[4]	139
Release of provisions recognized in the income statement	[4]	(47)
Provisions used in conformity with designated purpose	[4]	(54)
Capitalized reinstatement costs	[4]	11
Reclassifications	[4]	14
Foreign currency translation / unwind of discount	[4]	20
Balance at the end of period		363	[4]	280
UBS AG
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period		2,825		3,209
Increase in provisions recognized in the income statement		455		376
Release of provisions recognized in the income statement		(88)		(119)
Provisions used in conformity with designated purpose		(755)		(632)
Capitalized reinstatement costs		11		0
Reclassifications		0		(1)
Foreign currency translation / unwind of discount		86		(8)
Balance at the end of period		2,534		2,825
Personnel related restructuring provisions		13		33
Personnel related provisions for onerous lease contracts		49		61
UBS AG \| Litigation, regulatory and similar matters
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period		2,475	[1]	2,827
Increase in provisions recognized in the income statement	[1]	233	[2]	258
Release of provisions recognized in the income statement	[1]	(33)	[2]	(81)
Provisions used in conformity with designated purpose	[1]	(603)	[2]	(518)
Capitalized reinstatement costs	[2]	0
Reclassifications	[1]	0	[2]	0
Foreign currency translation / unwind of discount	[1]	64	[2]	(12)
Balance at the end of period	[1]	2,135	[2]	2,475
UBS AG \| Restructuring
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period		99
Increase in provisions recognized in the income statement		88
Release of provisions recognized in the income statement		(11)
Provisions used in conformity with designated purpose		(100)
Capitalized reinstatement costs		0
Reclassifications		(13)
Foreign currency translation / unwind of discount		4
Balance at the end of period		67	[5]	99
UBS AG \| Other
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period		251
Increase in provisions recognized in the income statement	[4]	134
Release of provisions recognized in the income statement	[4]	(44)
Provisions used in conformity with designated purpose	[4]	(51)
Capitalized reinstatement costs	[4]	11
Reclassifications	[4]	13
Foreign currency translation / unwind of discount	[4]	18
Balance at the end of period		$ 332	[4]	$ 251

[1]	Provisions, if any, for matters described in this disclosure are recorded in Global Wealth Management (item 3 and item 4) and Group Functions (item 2). Provisions, if any, for the matters described in items 1 and 6 of this disclosure are allocated between Global Wealth Management and Personal & Corporate Banking, and provisions, if any, for the matters described in this disclosure in item 5 are allocated between the Investment Bank and Group Functions.
[2]	Comprises provisions for losses resulting from legal, liability and compliance risks
[3]	Primarily consists of provisions for onerous contracts of USD 49 million as of 31 December 2020 (31 December 2019: USD 61 million) and personnel-related restructuring provisions of USD 18 million as of 31 December 2020 (31 December 2019: USD 40 million).
[4]	Mainly includes provisions related to real estate, employee benefits and operational risks.
[5]	Primarily consists of provisions for onerous contracts of USD 49 million as of 31 December 2020 (31 December 2019: USD 61 million) and personnel-related restructuring provisions of USD 13 million as of 31 December 2020 (31 December 2019: USD 33 million).

Litigation, regulatory and si_3

Litigation, regulatory and similar matters (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period		$ 2,861		$ 3,245
Increase in provisions recognized in the income statement		472		404
Release of provisions recognized in the income statement		(92)		(123)
Provisions used in conformity with designated purpose		(770)		(659)
Reclassifications		0
Foreign currency translation / unwind of discount		88		(8)
Balance at the end of period		2,571		2,861
Litigation, regulatory and similar matters
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period		2,475	[1]	2,827
Increase in provisions recognized in the income statement	[1]	233	[2]	258
Release of provisions recognized in the income statement	[1]	(33)	[2]	(81)
Provisions used in conformity with designated purpose	[1]	(603)	[2]	(518)
Reclassifications	[1]	0	[2]	0
Foreign currency translation / unwind of discount	[1]	64	[2]	(12)
Balance at the end of period	[1]	2,135	[2]	2,475
Litigation, regulatory and similar matters \| Global Wealth Management
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	[1]	782
Increase in provisions recognized in the income statement	[1]	213
Release of provisions recognized in the income statement	[1]	(24)
Provisions used in conformity with designated purpose	[1]	(154)
Reclassifications	[1]	0
Foreign currency translation / unwind of discount	[1]	44
Balance at the end of period	[1]	861		782
Litigation, regulatory and similar matters \| Personal & Corporate Banking
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	[1]	113
Increase in provisions recognized in the income statement	[1]	0
Release of provisions recognized in the income statement	[1]	(6)
Provisions used in conformity with designated purpose	[1]	(1)
Reclassifications	[1]	0
Foreign currency translation / unwind of discount	[1]	10
Balance at the end of period	[1]	115		113
Litigation, regulatory and similar matters \| Asset Management
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	[1]	0
Increase in provisions recognized in the income statement	[1]	0
Release of provisions recognized in the income statement	[1]	0
Provisions used in conformity with designated purpose	[1]	0
Reclassifications	[1]	0
Foreign currency translation / unwind of discount	[1]	0
Balance at the end of period	[1]	0		0
Litigation, regulatory and similar matters \| Investment Bank
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	[1]	255
Increase in provisions recognized in the income statement	[1]	19
Release of provisions recognized in the income statement	[1]	(1)
Provisions used in conformity with designated purpose	[1]	(52)
Reclassifications	[1]	(3)
Foreign currency translation / unwind of discount	[1]	10
Balance at the end of period	[1]	227		255
Litigation, regulatory and similar matters \| Group Functions
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	[1]	1,325
Increase in provisions recognized in the income statement	[1]	1
Release of provisions recognized in the income statement	[1]	(2)
Provisions used in conformity with designated purpose	[1]	(395)
Reclassifications	[1]	3
Foreign currency translation / unwind of discount	[1]	0
Balance at the end of period	[1]	932		1,325
UBS AG
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period		2,825		3,209
Increase in provisions recognized in the income statement		455		376
Release of provisions recognized in the income statement		(88)		(119)
Provisions used in conformity with designated purpose		(755)		(632)
Reclassifications		0		(1)
Foreign currency translation / unwind of discount		86		(8)
Balance at the end of period		2,534		2,825
UBS AG \| Litigation, regulatory and similar matters
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period		2,475	[1]	2,827
Increase in provisions recognized in the income statement	[1]	233	[2]	258
Release of provisions recognized in the income statement	[1]	(33)	[2]	(81)
Provisions used in conformity with designated purpose	[1]	(603)	[2]	(518)
Reclassifications	[1]	0	[2]	0
Foreign currency translation / unwind of discount	[1]	64	[2]	(12)
Balance at the end of period	[1]	2,135	[2]	2,475
UBS AG \| Litigation, regulatory and similar matters \| Global Wealth Management
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	[1]	782
Increase in provisions recognized in the income statement	[1]	213
Release of provisions recognized in the income statement	[1]	(24)
Provisions used in conformity with designated purpose	[1]	(154)
Reclassifications	[1]	0
Foreign currency translation / unwind of discount	[1]	44
Balance at the end of period	[1]	861		782
UBS AG \| Litigation, regulatory and similar matters \| Personal & Corporate Banking
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	[1]	113
Increase in provisions recognized in the income statement	[1]	0
Release of provisions recognized in the income statement	[1]	(6)
Provisions used in conformity with designated purpose	[1]	(1)
Reclassifications	[1]	0
Foreign currency translation / unwind of discount	[1]	10
Balance at the end of period	[1]	115		113
UBS AG \| Litigation, regulatory and similar matters \| Asset Management
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	[1]	0
Increase in provisions recognized in the income statement	[1]	0
Release of provisions recognized in the income statement	[1]	0
Provisions used in conformity with designated purpose	[1]	0
Reclassifications	[1]	0
Foreign currency translation / unwind of discount	[1]	0
Balance at the end of period	[1]	0		0
UBS AG \| Litigation, regulatory and similar matters \| Investment Bank
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	[1]	255
Increase in provisions recognized in the income statement	[1]	19
Release of provisions recognized in the income statement	[1]	(1)
Provisions used in conformity with designated purpose	[1]	(52)
Reclassifications	[1]	(3)
Foreign currency translation / unwind of discount	[1]	10
Balance at the end of period	[1]	227		255
UBS AG \| Litigation, regulatory and similar matters \| Group Functions
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	[1]	1,325
Increase in provisions recognized in the income statement	[1]	1
Release of provisions recognized in the income statement	[1]	2
Provisions used in conformity with designated purpose	[1]	395
Reclassifications	[1]	3
Foreign currency translation / unwind of discount	[1]	0
Balance at the end of period	[1]	$ 932		$ 1,325

[1]	Provisions, if any, for matters described in this disclosure are recorded in Global Wealth Management (item 3 and item 4) and Group Functions (item 2). Provisions, if any, for the matters described in items 1 and 6 of this disclosure are allocated between Global Wealth Management and Personal & Corporate Banking, and provisions, if any, for the matters described in this disclosure in item 5 are allocated between the Investment Bank and Group Functions.
[2]	Comprises provisions for losses resulting from legal, liability and compliance risks

Litigation, regulatory and si_4

Litigation, regulatory and similar matters (Narrative) (Detail 1)	12 Months Ended
	Dec. 31, 2020
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Indication of uncertainties of amount or timing of outflows	Such matters are subject to many uncertainties, and the outcome and the timing of resolution are often difficult to predict, particularly in the earlier stages of a case. There are also situations where the Group may enter into a settlement agreement. This may occur in order to avoid the expense, management distraction or reputational implications of continuing to contest liability, even for those matters for which the Group believes it should be exonerated. The uncertainties inherent in all such matters affect the amount and timing of any potential outflows for both matters with respect to which provisions have been established and other contingent liabilities. The Group makes provisions for such matters brought against it when, in the opinion of management after seeking legal advice, it is more likely than not that the Group has a present legal or constructive obligation as a result of past events, it is probable that an outflow of resources will be required, and the amount can be reliably estimated. Where these factors are otherwise satisfied, a provision may be established for claims that have not yet been asserted against the Group, but are nevertheless expected to be, based on the Group’s experience with similar asserted claims. If any of those conditions is not met, such matters result in contingent liabilities. If the amount of an obligation cannot be reliably estimated, a liability exists that is not recognized even if an outflow of resources is probable. Accordingly, no provision is established even if the potential outflow of resources with respect to such matters could be significant. Developments relating to a matter that occur after the relevant reporting period, but prior to the issuance of financial statements, which affect management’s assessment of the provision for such matter (because, for example, the developments provide evidence of conditions that existed at the end of the reporting period), are adjusting events after the reporting period under IAS 10 and must be recognized in the financial statements for the reporting period.
Explanation of reason for non-disclosure of information regarding provision	In the case of certain matters below, we state that we have established a provision, and for the other matters, we make no such statement. When we make this statement and we expect disclosure of the amount of a provision to prejudice seriously our position with other parties in the matter because it would reveal what UBS believes to be the probable and reliably estimable outflow, we do not disclose that amount. In some cases we are subject to confidentiality obligations that preclude such disclosure. With respect to the matters for which we do not state whether we have established a provision, either: (a) we have not established a provision, in which case the matter is treated as a contingent liability under the applicable accounting standard; or (b) we have established a provision but expect disclosure of that fact to prejudice seriously our position with other parties in the matter because it would reveal the fact that UBS believes an outflow of resources to be probable and reliably estimable.
Explanation of reason for non-disclosure of information regarding contingent liability	It is not practicable to provide an aggregate estimate of liability for our litigation, regulatory and similar matters as a class of contingent liabilities. Doing so would require UBS to provide speculative legal assessments as to claims and proceedings that involve unique fact patterns or novel legal theories, that have not yet been initiated or are at early stages of adjudication, or as to which alleged damages have not been quantified by the claimants. Although UBS therefore cannot provide a numerical estimate of the future losses that could arise from litigation, regulatory and similar matters, UBS believes that the aggregate amount of possible future losses from this class that are more than remote substantially exceeds the level of current provisions. Litigation, regulatory and similar matters may also result in non-monetary penalties and consequences. For example, the non-prosecution agreement UBS entered into with the US Department of Justice (DOJ), Criminal Division, Fraud Section in connection with submissions of benchmark interest rates, including, among others, the British Bankers’ Association London Interbank Offered Rate (LIBOR), was terminated by the DOJ based on its determination that UBS had committed a US crime in relation to foreign exchange matters. As a consequence, UBS AG pleaded guilty to one count of wire fraud for conduct in the LIBOR matter, paid a fine and was subject to probation, which ended in January 2020. A guilty plea to, or conviction of, a crime could have material consequences for UBS. Resolution of regulatory proceedings may require UBS to obtain waivers of regulatory disqualifications to maintain certain operations, may entitle regulatory authorities to limit, suspend or terminate licenses and regulatory authorizations, and may permit financial market utilities to limit, suspend or terminate UBS’s participation in such utilities. Failure to obtain such waivers, or any limitation, suspension or termination of licenses, authorizations or participations, could have material consequences for UBS.
UBS AG
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Indication of uncertainties of amount or timing of outflows	Such matters are subject to many uncertainties, and the outcome and the timing of resolution are often difficult to predict, particularly in the earlier stages of a case. There are also situations where UBS may enter into a settlement agreement. This may occur in order to avoid the expense, management distraction or reputational implications of continuing to contest liability, even for those matters for which UBS believes it should be exonerated. The uncertainties inherent in all such matters affect the amount and timing of any potential outflows for both matters with respect to which provisions have been established and other contingent liabilities. UBS makes provisions for such matters brought against it when, in the opinion of management after seeking legal advice, it is more likely than not that UBS has a present legal or constructive obligation as a result of past events, it is probable that an outflow of resources will be required, and the amount can be reliably estimated. Where these factors are otherwise satisfied, a provision may be established for claims that have not yet been asserted against UBS, but are nevertheless expected to be, based on UBS’s experience with similar asserted claims. If any of those conditions is not met, such matters result in contingent liabilities. If the amount of an obligation cannot be reliably estimated, a liability exists that is not recognized even if an outflow of resources is probable. Accordingly, no provision is established even if the potential outflow of resources with respect to such matters could be significant. Developments relating to a matter that occur after the relevant reporting period, but prior to the issuance of financial statements, which affect management’s assessment of the provision for such matter (because, for example, the developments provide evidence of conditions that existed at the end of the reporting period), are adjusting events after the reporting period under IAS 10 and must be recognized in the financial statements for the reporting period.
Explanation of reason for non-disclosure of information regarding provision	In the case of certain matters below, we state that we have established a provision, and for the other matters, we make no such statement. When we make this statement and we expect disclosure of the amount of a provision to prejudice seriously our position with other parties in the matter because it would reveal what UBS believes to be the probable and reliably estimable outflow, we do not disclose that amount. In some cases we are subject to confidentiality obligations that preclude such disclosure. With respect to the matters for which we do not state whether we have established a provision, either: (a) we have not established a provision, in which case the matter is treated as a contingent liability under the applicable accounting standard; or (b) we have established a provision but expect disclosure of that fact to prejudice seriously our position with other parties in the matter because it would reveal the fact that UBS believes an outflow of resources to be probable and reliably estimable.
Explanation of reason for non-disclosure of information regarding contingent liability	It is not practicable to provide an aggregate estimate of liability for our litigation, regulatory and similar matters as a class of contingent liabilities. Doing so would require UBS to provide speculative legal assessments as to claims and proceedings that involve unique fact patterns or novel legal theories, that have not yet been initiated or are at early stages of adjudication, or as to which alleged damages have not been quantified by the claimants. Although UBS therefore cannot provide a numerical estimate of the future losses that could arise from litigation, regulatory and similar matters, UBS believes that the aggregate amount of possible future losses from this class that are more than remote substantially exceeds the level of current provisions. Litigation, regulatory and similar matters may also result in non-monetary penalties and consequences. For example, the non-prosecution agreement UBS entered into with the US Department of Justice (DOJ), Criminal Division, Fraud Section in connection with submissions of benchmark interest rates, including, among others, the British Bankers’ Association London Interbank Offered Rate (LIBOR), was terminated by the DOJ based on its determination that UBS had committed a US crime in relation to foreign exchange matters. As a consequence, UBS AG pleaded guilty to one count of wire fraud for conduct in the LIBOR matter, paid a fine and was subject to probation, which ended in January 2020. A guilty plea to, or conviction of, a crime could have material consequences for UBS. Resolution of regulatory proceedings may require UBS to obtain waivers of regulatory disqualifications to maintain certain operations, may entitle regulatory authorities to limit, suspend or terminate licenses and regulatory authorizations, and may permit financial market utilities to limit, suspend or terminate UBS’s participation in such utilities. Failure to obtain such waivers, or any limitation, suspension or termination of licenses, authorizations or participations, could have material consequences for UBS.

Litigation, regulatory and si_5

Litigation, regulatory and similar matters (Narrative) (Detail 2) - 12 months ended Dec. 31, 2020 € in Millions, $ in Millions	EUR (€)	USD ($)	USD ($)
Inquiries regarding cross-border wealth management businesses \| Investigations in France
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Fine provided in announcement of French Court \| €	€ 3,700
Civil Damage Award announcement of French Court \| €	800
Provision recorded to cover pending legal case	450		$ 549
Inquiries regarding cross-border wealth management businesses \| Investigations in France involving UBS AG
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Bail ("caution") ordered to be paid \| €	1,100
Inquiries regarding cross-border wealth management businesses \| Investigations in France involving UBS (France) S.A.
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Bail ("caution") ordered to be paid \| €	40
Reduced bail ("caution") ordered to be paid \| €	10
Madoff \| claims filed in Luxembourg by liquidators of two Luxembourg funds against UBS entities, non-UBS entities and certain individuals
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Amounts claimed \| €	2,100
Madoff \| claims filed in the US by BMIS Trustee against UBS entities and various other parties
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Amounts claimed		$ 125
Minimum total claims against all defendants		2,000
Puerto Rico
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Amount in dispute		125
Puerto Rico \| Customer arbitration claims
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Amounts claimed		3,400
Claimed damages that have been resolved		2,800
Puerto Rico \| Action filed on behalf of Employee Retirement System of the Commonwealth of Puerto Rico (System) against over 40 defendants
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Minimum total claims against all defendants		800
Amount of bonds issued and underwritten by the System		3,000
Puerto Rico \| Claims filed by two US insurance companies that insured issues of Puerto Rico municipal bonds
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Minimum total claims against all defendants		955
Foreign exchange, LIBOR and benchmark rates, and other trading practices - Foreign exchange-related civil litigation \| Claims under the Commodity Exchange Act
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Settlement made		141
Agreed settlement pending approval		10
UBS AG \| Inquiries regarding cross-border wealth management businesses \| Investigations in France
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Fine provided in announcement of French Court \| €	3,700
Civil Damage Award announcement of French Court \| €	800
Provision recorded to cover pending legal case	450		$ 549
UBS AG \| Inquiries regarding cross-border wealth management businesses \| Investigations in France involving UBS AG
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Bail ("caution") ordered to be paid \| €	1,100
UBS AG \| Inquiries regarding cross-border wealth management businesses \| Investigations in France involving UBS (France) S.A.
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Bail ("caution") ordered to be paid \| €	40
Reduced bail ("caution") ordered to be paid \| €	10
UBS AG \| Madoff \| claims filed in Luxembourg by liquidators of two Luxembourg funds against UBS entities, non-UBS entities and certain individuals
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Amounts claimed \| €	€ 2,100
UBS AG \| Madoff \| claims filed in the US by BMIS Trustee against UBS entities and various other parties
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Amounts claimed		125
Minimum total claims against all defendants		2,000
UBS AG \| Puerto Rico
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Amount in dispute		125
UBS AG \| Puerto Rico \| Customer arbitration claims
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Amounts claimed		3,400
Claimed damages that have been resolved		2,800
UBS AG \| Puerto Rico \| Action filed on behalf of Employee Retirement System of the Commonwealth of Puerto Rico (System) against over 40 defendants
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Minimum total claims against all defendants		800
Amount of bonds issued and underwritten by the System		3,000
UBS AG \| Puerto Rico \| Claims filed by two US insurance companies that insured issues of Puerto Rico municipal bonds
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Minimum total claims against all defendants		955
UBS AG \| Foreign exchange, LIBOR and benchmark rates, and other trading practices - Foreign exchange-related civil litigation \| Claims under the Commodity Exchange Act
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Settlement made		141
Agreed settlement pending approval		$ 10

Other financial liabilities mea

Other financial liabilities measured at amortized cost (Detail) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Financial Liabilities [Line Items]
Other accrued expenses		$ 1,696	$ 1,928
Accrued interest expenses		1,355	1,562
Settlement and clearing accounts		1,199	1,379
Lease liabilities		3,927	3,943
Other		1,553	900
Total other financial liabilities measured at amortized cost		9,729	9,712
UBS AG
Disclosure Of Financial Liabilities [Line Items]
Other accrued expenses		1,508	1,697
Accrued interest expenses		1,382	1,596
Settlement and clearing accounts		1,181	1,368
Lease liabilities	[1]	3,821	3,858
Other	[2]	2,530	1,854
Total other financial liabilities measured at amortized cost		$ 10,421	$ 10,373

[1]	In 2020 UBS AG modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees. Refer to Note 1b for more information.
[2]	In 2020 UBS AG modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees. Refer to Note 1b for more information.

Other financial liabilities des

Other financial liabilities designated at fair value (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Financial Liabilities [Line Items]
Financial liabilities related to unit-linked investment contracts	$ 20,975	$ 28,145
Securities financing transactions	7,317	5,742
Over-the-counter debt instruments	2,060	2,022
Other	35	31
Total other financial liabilities designated at fair value	30,387	35,940
of which: life-to-date own credit (gain) / loss	36	4
UBS AG
Disclosure Of Financial Liabilities [Line Items]
Financial liabilities related to unit-linked investment contracts	20,975	28,145
Securities financing transactions	7,317	5,742
Over-the-counter debt instruments	2,060	2,022
Funding from UBS Group AG and its subsidiaries	1,375	217
Other	46	31
Total other financial liabilities designated at fair value	31,773	36,157
of which: life-to-date own credit (gain) / loss	$ 148	$ 6

Other non-financial liabilities

Other non-financial liabilities (Detail) - USD ($) $ in Millions		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018	Jan. 01, 2018
Other Non-Financial Liabilities [Line Items]
Compensation-related liabilities		$ 7,468	[1],[2]	$ 6,855	[1],[2]	$ 7,321	$ 7,916
of which: Deferred Contingent Capital Plan		1,858		1,855
of which: financial advisor compensation plans		1,500	[1]	1,506	[1]	1,501
of which: other compensation plans		2,740		2,310
of which: net defined benefit liability		722		633
of which: other compensation-related liabilities	[3]	648		552
Deferred tax liabilities		564		311	[4]
Current tax liabilities		1,009		852
VAT and other tax payables		523		475
Deferred income		228		141
Other		61		202
Total other non-financial liabilities		9,854		8,837		9,065	9,486
UBS AG
Other Non-Financial Liabilities [Line Items]
Compensation-related liabilities		4,776	[1]	4,339	[1]	4,688	5,079
of which: financial advisor compensation plans		1,497	[1]	1,502	[1]	1,497
of which: other compensation plans		2,034		1,750
of which: net defined benefit liability		711		629
of which: other compensation-related liabilities	[3]	534		458
Deferred tax liabilities		558		311	[4]
Current tax liabilities		943		780
VAT and other tax payables		470		445
Deferred income		212		134
Other		61		202
Total other non-financial liabilities		$ 7,018		$ 6,211	[5]	$ 6,318	$ 6,542

[1]	Comparative-period information has been restated. Refer to Note 1b for more information.
[2]	In 2020, UBS modified the conditions for continued vesting of certain outstanding deferred compensation awards for qualifying employees. Refer to Note 1b for more information
[3]	Includes liabilities for payroll taxes and untaken vacation.
[4]	Comparative-period information has been restated. Refer to Note 1b for more information
[5]	Comparative-period information has been restated. Refer to Note 1b for more information.

Expected credit loss measurem_8

Expected credit loss measurement - ECL for the period (Narrative) (Detail 1) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	$ 694	$ 78	$ 118
Personal & Corporate Banking
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	257	21	56
Investment Bank
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	305	30	38
Global Wealth Management
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	88	20	15
Group Functions
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	42	7	8
Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	266	(22)	9
Positions that are not credit impaired \| Update of the forward-looking scenarios
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	200
Positions that are not credit impaired \| New transactions
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	73
Positions that are not credit impaired \| Model updates
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	32
Positions that are not credit impaired \| Effects of expert judgement overlays for Swiss large corporates, small and medium-sized entities, and remeasurements within the loan book
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	24
Positions that are not credit impaired \| Post-model expense adjustment updates
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	117
Positions that are not credit impaired \| Personal & Corporate Banking
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	129	(23)	0
Positions that are not credit impaired \| Investment Bank
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	88	4	9
Positions that are not credit impaired \| Global Wealth Management
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	48	(3)	0
Positions that are not credit impaired \| Group Functions
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	0	0	1
Credit-impaired positions
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	429	100	109
Credit-impaired positions \| Personal & Corporate Banking
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	128	44	56
Credit-impaired positions \| Personal & Corporate Banking \| Case of fraud at a commodity trade finance counterparty
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	59
Credit-impaired positions \| Investment Bank
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	217	26	29
Credit-impaired positions \| Investment Bank \| Travel sector exposure
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	81
Credit-impaired positions \| Global Wealth Management
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	40	23	15
Credit-impaired positions \| Group Functions
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	42	7	8
UBS AG
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	695	78	117
UBS AG \| Personal & Corporate Banking
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	257	21	56
UBS AG \| Investment Bank
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	305	30	38
UBS AG \| Global Wealth Management
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	88	20	15
UBS AG \| Group Functions
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	42	7	8
UBS AG \| Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	266	(22)	9
UBS AG \| Positions that are not credit impaired \| Update of the forward-looking scenarios
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	200
UBS AG \| Positions that are not credit impaired \| New transactions
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	73
UBS AG \| Positions that are not credit impaired \| Model updates
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	32
UBS AG \| Positions that are not credit impaired \| Effects of expert judgement overlays for Swiss large corporates, small and medium-sized entities, and remeasurements within the loan book
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	24
UBS AG \| Positions that are not credit impaired \| Post-model expense adjustment updates
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	117
UBS AG \| Positions that are not credit impaired \| Personal & Corporate Banking
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	129	(23)	0
UBS AG \| Positions that are not credit impaired \| Investment Bank
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	88	4	9
UBS AG \| Positions that are not credit impaired \| Global Wealth Management
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	48	(3)	0
UBS AG \| Positions that are not credit impaired \| Group Functions
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	0	0	0
UBS AG \| Credit-impaired positions
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	429	100	109
UBS AG \| Credit-impaired positions \| Personal & Corporate Banking
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	128	44	56
UBS AG \| Credit-impaired positions \| Personal & Corporate Banking \| Case of fraud at a commodity trade finance counterparty
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	59
UBS AG \| Credit-impaired positions \| Investment Bank
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	217	26	29
UBS AG \| Credit-impaired positions \| Investment Bank \| Travel sector exposure
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	81
UBS AG \| Credit-impaired positions \| Global Wealth Management
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	40	23	15
UBS AG \| Credit-impaired positions \| Group Functions
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (release)	$ 42	$ 7	$ 8

Expected credit loss measurem_9

Expected credit loss measurement - ECL for the period (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	$ (694)	$ (78)	$ (118)
Global Wealth Management
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(88)	(20)	(15)
Personal & Corporate Banking
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(257)	(21)	(56)
Asset Management
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(2)	0	0
Investment Bank
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(305)	(30)	(38)
Group Functions
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(42)	(7)	(8)
Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(266)	22	(9)
Positions that are not credit impaired \| Global Wealth Management
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(48)	3	0
Positions that are not credit impaired \| Personal & Corporate Banking
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(129)	23	0
Positions that are not credit impaired \| Asset Management
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	0	0	0
Positions that are not credit impaired \| Investment Bank
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(88)	(4)	(9)
Positions that are not credit impaired \| Group Functions
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	0	0	(1)
Credit-impaired positions
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(429)	(100)	(109)
Credit-impaired positions \| Global Wealth Management
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(40)	(23)	(15)
Credit-impaired positions \| Personal & Corporate Banking
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(128)	(44)	(56)
Credit-impaired positions \| Asset Management
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(2)	0	0
Credit-impaired positions \| Investment Bank
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(217)	(26)	(29)
Credit-impaired positions \| Group Functions
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(42)	(7)	(8)
UBS AG
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(695)	(78)	(117)
UBS AG \| Global Wealth Management
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(88)	(20)	(15)
UBS AG \| Personal & Corporate Banking
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(257)	(21)	(56)
UBS AG \| Asset Management
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(2)	0	0
UBS AG \| Investment Bank
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(305)	(30)	(38)
UBS AG \| Group Functions
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(42)	(7)	(8)
UBS AG \| Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(266)	22	(9)
UBS AG \| Positions that are not credit impaired \| Global Wealth Management
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(48)	3	0
UBS AG \| Positions that are not credit impaired \| Personal & Corporate Banking
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(129)	23	0
UBS AG \| Positions that are not credit impaired \| Asset Management
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	0	0	0
UBS AG \| Positions that are not credit impaired \| Investment Bank
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(88)	(4)	(9)
UBS AG \| Positions that are not credit impaired \| Group Functions
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	0	0	0
UBS AG \| Credit-impaired positions
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(429)	(100)	(109)
UBS AG \| Credit-impaired positions \| Global Wealth Management
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(40)	(23)	(15)
UBS AG \| Credit-impaired positions \| Personal & Corporate Banking
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(128)	(44)	(56)
UBS AG \| Credit-impaired positions \| Asset Management
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(2)	0	0
UBS AG \| Credit-impaired positions \| Investment Bank
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	(217)	(26)	(29)
UBS AG \| Credit-impaired positions \| Group Functions
Disclosure Of Provision Matrix [Line Items]
Credit loss (expense) / release	$ (42)	$ (7)	$ (8)

Expected credit loss measure_10

Expected credit loss measurement - ECL for the period (Narrative) (Detail 2)	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Upside ECL scenario
Disclosure Of Provision Matrix [Line Items]
Assigned weights	7.50%	0.00%	7.50%
Baseline ECL scenario
Disclosure Of Provision Matrix [Line Items]
Assigned weights	42.50%	60.00%	42.50%
Mild downside ECL scenario
Disclosure Of Provision Matrix [Line Items]
Assigned weights	35.00%	0.00%	35.00%
Severe downside ECL scenario
Disclosure Of Provision Matrix [Line Items]
Assigned weights	15.00%	40.00%	15.00%
UBS AG \| Upside ECL scenario
Disclosure Of Provision Matrix [Line Items]
Assigned weights	7.50%	0.00%	7.50%
UBS AG \| Baseline ECL scenario
Disclosure Of Provision Matrix [Line Items]
Assigned weights	42.50%	60.00%	42.50%
UBS AG \| Mild downside ECL scenario
Disclosure Of Provision Matrix [Line Items]
Assigned weights	35.00%	0.00%	35.00%
UBS AG \| Severe downside ECL scenario
Disclosure Of Provision Matrix [Line Items]
Assigned weights	15.00%	40.00%	15.00%

Expected credit loss measure_11

Expected credit loss measurement - ECL selection of key macro-economic variables (Detail)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Baseline ECL scenario \| Within 1 year \| Real GDP growth (% change) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	2.70%	1.90%
Baseline ECL scenario \| Within 1 year \| Real GDP growth (% change) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	2.50%	1.00%
Baseline ECL scenario \| Within 1 year \| Real GDP growth (% change) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.30%	1.50%
Baseline ECL scenario \| Within 1 year \| Consumer price index (% change) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	1.70%	1.80%
Baseline ECL scenario \| Within 1 year \| Consumer price index (% change) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	1.40%	1.30%
Baseline ECL scenario \| Within 1 year \| Consumer price index (% change) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.30%	0.80%
Baseline ECL scenario \| Within 1 year \| Unemployment rate (end-of-period level, %) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	5.50%
Baseline ECL scenario \| Within 1 year \| Unemployment rate (end-of-period level, %) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	9.50%
Baseline ECL scenario \| Within 1 year \| Unemployment rate (end-of-period level, %) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.80%
Baseline ECL scenario \| Within 1 year \| Unemployment rate (change, %) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(3.50%)	(0.40%)
Baseline ECL scenario \| Within 1 year \| Unemployment rate (change, %) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.40%	(0.10%)
Baseline ECL scenario \| Within 1 year \| Unemployment rate (change, %) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.40%	0.10%
Baseline ECL scenario \| Within 1 year \| Fixed income: 10-year government bonds (change in yields, basis points) \| USD
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.22%	0.002%
Baseline ECL scenario \| Within 1 year \| Fixed income: 10-year government bonds (change in yields, basis points) \| EUR
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.04%	0.084%
Baseline ECL scenario \| Within 1 year \| Fixed income: 10-year government bonds (change in yields, basis points) \| CHF
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.13%	0.095%
Baseline ECL scenario \| Within 1 year \| Equity indices (% change) \| S&P500
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(2.90%)	3.50%
Baseline ECL scenario \| Within 1 year \| Equity indices (% change) \| EuroStoxx50
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.80%	0.50%
Baseline ECL scenario \| Within 1 year \| Equity indices (% change) \| SPI
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(0.80%)	1.40%
Baseline ECL scenario \| Within 1 year \| Swiss real estate (% change) \| Single Family Homes
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.40%	0.10%
Baseline ECL scenario \| Within 1 year \| Other real estate (% change) \| United States S&P / Case Shiller
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	2.50%	4.00%
Baseline ECL scenario \| Within 1 year \| Other real estate (% change) \| Eurozone House Price Index
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	1.10%	1.20%
Baseline ECL scenario \| cumulative 3-year \| Real GDP growth (% change) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	9.10%	6.40%
Baseline ECL scenario \| cumulative 3-year \| Real GDP growth (% change) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	9.90%	2.80%
Baseline ECL scenario \| cumulative 3-year \| Real GDP growth (% change) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	9.00%	4.80%
Baseline ECL scenario \| cumulative 3-year \| Consumer price index (% change) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	5.50%	6.20%
Baseline ECL scenario \| cumulative 3-year \| Consumer price index (% change) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.90%	4.30%
Baseline ECL scenario \| cumulative 3-year \| Consumer price index (% change) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.90%	2.70%
Baseline ECL scenario \| cumulative 3-year \| Unemployment rate (end-of-period level, %) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	4.50%
Baseline ECL scenario \| cumulative 3-year \| Unemployment rate (end-of-period level, %) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	8.00%
Baseline ECL scenario \| cumulative 3-year \| Unemployment rate (end-of-period level, %) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.20%
Baseline ECL scenario \| cumulative 3-year \| Unemployment rate (change, %) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(4.50%)	(0.50%)
Baseline ECL scenario \| cumulative 3-year \| Unemployment rate (change, %) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(1.20%)	(0.20%)
Baseline ECL scenario \| cumulative 3-year \| Unemployment rate (change, %) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(0.20%)	0.30%
Baseline ECL scenario \| cumulative 3-year \| Fixed income: 10-year government bonds (change in yields, basis points) \| USD
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.46%	0.101%
Baseline ECL scenario \| cumulative 3-year \| Fixed income: 10-year government bonds (change in yields, basis points) \| EUR
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.21%	0.282%
Baseline ECL scenario \| cumulative 3-year \| Fixed income: 10-year government bonds (change in yields, basis points) \| CHF
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.31%	0.30%
Baseline ECL scenario \| cumulative 3-year \| Equity indices (% change) \| S&P500
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(1.70%)	9.50%
Baseline ECL scenario \| cumulative 3-year \| Equity indices (% change) \| EuroStoxx50
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	13.50%	4.40%
Baseline ECL scenario \| cumulative 3-year \| Equity indices (% change) \| SPI
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	5.80%	5.30%
Baseline ECL scenario \| cumulative 3-year \| Swiss real estate (% change) \| Single Family Homes
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	7.10%	2.30%
Baseline ECL scenario \| cumulative 3-year \| Other real estate (% change) \| United States S&P / Case Shiller
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	9.20%	16.70%
Baseline ECL scenario \| cumulative 3-year \| Other real estate (% change) \| Eurozone House Price Index
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	7.20%	2.20%
Severe downside ECL scenario \| Within 1 year \| Real GDP growth (% change) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(5.90%)	(6.40%)
Severe downside ECL scenario \| Within 1 year \| Real GDP growth (% change) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(8.70%)	(9.10%)
Severe downside ECL scenario \| Within 1 year \| Real GDP growth (% change) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(6.60%)	(7.00%)
Severe downside ECL scenario \| Within 1 year \| Consumer price index (% change) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(1.20%)	(1.20%)
Severe downside ECL scenario \| Within 1 year \| Consumer price index (% change) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(1.30%)	(1.30%)
Severe downside ECL scenario \| Within 1 year \| Consumer price index (% change) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(1.80%)	(1.80%)
Severe downside ECL scenario \| Within 1 year \| Unemployment rate (end-of-period level, %) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	12.10%
Severe downside ECL scenario \| Within 1 year \| Unemployment rate (end-of-period level, %) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	14.10%
Severe downside ECL scenario \| Within 1 year \| Unemployment rate (end-of-period level, %) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	6.10%
Severe downside ECL scenario \| Within 1 year \| Unemployment rate (change, %) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.10%	5.70%
Severe downside ECL scenario \| Within 1 year \| Unemployment rate (change, %) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	5.00%	5.60%
Severe downside ECL scenario \| Within 1 year \| Unemployment rate (change, %) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	2.60%	2.60%
Severe downside ECL scenario \| Within 1 year \| Fixed income: 10-year government bonds (change in yields, basis points) \| USD
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(0.50%)	(1.00%)
Severe downside ECL scenario \| Within 1 year \| Fixed income: 10-year government bonds (change in yields, basis points) \| EUR
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(0.35%)	(0.30%)
Severe downside ECL scenario \| Within 1 year \| Fixed income: 10-year government bonds (change in yields, basis points) \| CHF
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(0.70%)	(0.70%)
Severe downside ECL scenario \| Within 1 year \| Equity indices (% change) \| S&P500
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(50.20%)	(53.00%)
Severe downside ECL scenario \| Within 1 year \| Equity indices (% change) \| EuroStoxx50
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(57.60%)	(60.00%)
Severe downside ECL scenario \| Within 1 year \| Equity indices (% change) \| SPI
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(53.60%)	(56.20%)
Severe downside ECL scenario \| Within 1 year \| Swiss real estate (% change) \| Single Family Homes
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(17.00%)	(15.20%)
Severe downside ECL scenario \| Within 1 year \| Other real estate (% change) \| United States S&P / Case Shiller
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(15.30%)	(13.30%)
Severe downside ECL scenario \| Within 1 year \| Other real estate (% change) \| Eurozone House Price Index
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(22.90%)	(23.00%)
Severe downside ECL scenario \| cumulative 3-year \| Real GDP growth (% change) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(3.80%)	(4.30%)
Severe downside ECL scenario \| cumulative 3-year \| Real GDP growth (% change) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(10.30%)	(10.80%)
Severe downside ECL scenario \| cumulative 3-year \| Real GDP growth (% change) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(5.70%)	(6.20%)
Severe downside ECL scenario \| cumulative 3-year \| Consumer price index (% change) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.40%	0.40%
Severe downside ECL scenario \| cumulative 3-year \| Consumer price index (% change) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(1.70%)	(1.70%)
Severe downside ECL scenario \| cumulative 3-year \| Consumer price index (% change) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(1.60%)	(1.60%)
Severe downside ECL scenario \| cumulative 3-year \| Unemployment rate (end-of-period level, %) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	9.90%
Severe downside ECL scenario \| cumulative 3-year \| Unemployment rate (end-of-period level, %) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	16.40%
Severe downside ECL scenario \| cumulative 3-year \| Unemployment rate (end-of-period level, %) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	6.80%
Severe downside ECL scenario \| cumulative 3-year \| Unemployment rate (change, %) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.90%	5.60%
Severe downside ECL scenario \| cumulative 3-year \| Unemployment rate (change, %) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	7.20%	7.90%
Severe downside ECL scenario \| cumulative 3-year \| Unemployment rate (change, %) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.40%	3.60%
Severe downside ECL scenario \| cumulative 3-year \| Fixed income: 10-year government bonds (change in yields, basis points) \| USD
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(0.15%)	(0.75%)
Severe downside ECL scenario \| cumulative 3-year \| Fixed income: 10-year government bonds (change in yields, basis points) \| EUR
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(0.25%)	(0.20%)
Severe downside ECL scenario \| cumulative 3-year \| Fixed income: 10-year government bonds (change in yields, basis points) \| CHF
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(0.35%)	(0.35%)
Severe downside ECL scenario \| cumulative 3-year \| Equity indices (% change) \| S&P500
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(40.10%)	(42.90%)
Severe downside ECL scenario \| cumulative 3-year \| Equity indices (% change) \| EuroStoxx50
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(50.40%)	(52.90%)
Severe downside ECL scenario \| cumulative 3-year \| Equity indices (% change) \| SPI
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(44.20%)	(46.80%)
Severe downside ECL scenario \| cumulative 3-year \| Swiss real estate (% change) \| Single Family Homes
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(30.00%)	(27.00%)
Severe downside ECL scenario \| cumulative 3-year \| Other real estate (% change) \| United States S&P / Case Shiller
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(28.70%)	(23.40%)
Severe downside ECL scenario \| cumulative 3-year \| Other real estate (% change) \| Eurozone House Price Index
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(35.40%)	(33.20%)
UBS AG \| Baseline ECL scenario \| Within 1 year \| Real GDP growth (% change) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	2.70%	1.90%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Real GDP growth (% change) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	2.50%	1.00%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Real GDP growth (% change) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.30%	1.50%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Consumer price index (% change) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	1.70%	1.80%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Consumer price index (% change) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	1.40%	1.30%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Consumer price index (% change) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.30%	0.80%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Unemployment rate (end-of-period level, %) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	5.50%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Unemployment rate (end-of-period level, %) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	9.50%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Unemployment rate (end-of-period level, %) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.80%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Unemployment rate (change, %) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(3.50%)	(0.40%)
UBS AG \| Baseline ECL scenario \| Within 1 year \| Unemployment rate (change, %) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.40%	(0.10%)
UBS AG \| Baseline ECL scenario \| Within 1 year \| Unemployment rate (change, %) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.40%	0.10%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Fixed income: 10-year government bonds (change in yields, basis points) \| USD
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.22%	0.002%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Fixed income: 10-year government bonds (change in yields, basis points) \| EUR
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.04%	0.084%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Fixed income: 10-year government bonds (change in yields, basis points) \| CHF
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.13%	0.095%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Equity indices (% change) \| S&P500
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(2.90%)	3.50%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Equity indices (% change) \| EuroStoxx50
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.80%	0.50%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Equity indices (% change) \| SPI
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(0.80%)	1.40%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Swiss real estate (% change) \| Single Family Homes
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.40%	0.10%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Other real estate (% change) \| United States S&P / Case Shiller
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	2.50%	4.00%
UBS AG \| Baseline ECL scenario \| Within 1 year \| Other real estate (% change) \| Eurozone House Price Index
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	1.10%	1.20%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Real GDP growth (% change) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	9.10%	6.40%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Real GDP growth (% change) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	9.90%	2.80%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Real GDP growth (% change) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	9.00%	4.80%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Consumer price index (% change) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	5.50%	6.20%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Consumer price index (% change) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.90%	4.30%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Consumer price index (% change) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.90%	2.70%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Unemployment rate (end-of-period level, %) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	4.50%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Unemployment rate (end-of-period level, %) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	8.00%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Unemployment rate (end-of-period level, %) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.20%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Unemployment rate (change, %) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(4.50%)	(0.50%)
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Unemployment rate (change, %) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(1.20%)	(0.20%)
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Unemployment rate (change, %) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(0.20%)	0.30%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Fixed income: 10-year government bonds (change in yields, basis points) \| USD
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.46%	0.101%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Fixed income: 10-year government bonds (change in yields, basis points) \| EUR
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.21%	0.282%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Fixed income: 10-year government bonds (change in yields, basis points) \| CHF
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.31%	0.30%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Equity indices (% change) \| S&P500
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(1.70%)	9.50%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Equity indices (% change) \| EuroStoxx50
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	13.50%	4.40%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Equity indices (% change) \| SPI
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	5.80%	5.30%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Swiss real estate (% change) \| Single Family Homes
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	7.10%	2.30%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Other real estate (% change) \| United States S&P / Case Shiller
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	9.20%	16.70%
UBS AG \| Baseline ECL scenario \| cumulative 3-year \| Other real estate (% change) \| Eurozone House Price Index
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	7.20%	2.20%
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Real GDP growth (% change) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(5.90%)	(6.40%)
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Real GDP growth (% change) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(8.70%)	(9.10%)
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Real GDP growth (% change) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(6.60%)	(7.00%)
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Consumer price index (% change) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(1.20%)	(1.20%)
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Consumer price index (% change) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(1.30%)	(1.30%)
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Consumer price index (% change) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(1.80%)	(1.80%)
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Unemployment rate (end-of-period level, %) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	12.10%
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Unemployment rate (end-of-period level, %) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	14.10%
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Unemployment rate (end-of-period level, %) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	6.10%
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Unemployment rate (change, %) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.10%	5.70%
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Unemployment rate (change, %) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	5.00%	5.60%
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Unemployment rate (change, %) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	2.60%	2.60%
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Fixed income: 10-year government bonds (change in yields, basis points) \| USD
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(0.50%)	(1.00%)
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Fixed income: 10-year government bonds (change in yields, basis points) \| EUR
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(0.35%)	(0.30%)
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Fixed income: 10-year government bonds (change in yields, basis points) \| CHF
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(0.70%)	(0.70%)
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Equity indices (% change) \| S&P500
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(50.20%)	(53.00%)
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Equity indices (% change) \| EuroStoxx50
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(57.60%)	(60.00%)
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Equity indices (% change) \| SPI
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(53.60%)	(56.20%)
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Swiss real estate (% change) \| Single Family Homes
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(17.00%)	(15.20%)
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Other real estate (% change) \| United States S&P / Case Shiller
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(15.30%)	(13.30%)
UBS AG \| Severe downside ECL scenario \| Within 1 year \| Other real estate (% change) \| Eurozone House Price Index
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(22.90%)	(23.00%)
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Real GDP growth (% change) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(3.80%)	(4.30%)
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Real GDP growth (% change) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(10.30%)	(10.80%)
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Real GDP growth (% change) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(5.70%)	(6.20%)
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Consumer price index (% change) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.40%	0.40%
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Consumer price index (% change) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(1.70%)	(1.70%)
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Consumer price index (% change) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(1.60%)	(1.60%)
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Unemployment rate (end-of-period level, %) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	9.90%
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Unemployment rate (end-of-period level, %) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	16.40%
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Unemployment rate (end-of-period level, %) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	6.80%
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Unemployment rate (change, %) \| United States
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.90%	5.60%
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Unemployment rate (change, %) \| Eurozone
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	7.20%	7.90%
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Unemployment rate (change, %) \| Switzerland
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.40%	3.60%
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Fixed income: 10-year government bonds (change in yields, basis points) \| USD
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(0.15%)	(0.75%)
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Fixed income: 10-year government bonds (change in yields, basis points) \| EUR
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(0.25%)	(0.20%)
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Fixed income: 10-year government bonds (change in yields, basis points) \| CHF
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(0.35%)	(0.35%)
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Equity indices (% change) \| S&P500
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(40.10%)	(42.90%)
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Equity indices (% change) \| EuroStoxx50
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(50.40%)	(52.90%)
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Equity indices (% change) \| SPI
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(44.20%)	(46.80%)
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Swiss real estate (% change) \| Single Family Homes
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(30.00%)	(27.00%)
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Other real estate (% change) \| United States S&P / Case Shiller
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(28.70%)	(23.40%)
UBS AG \| Severe downside ECL scenario \| cumulative 3-year \| Other real estate (% change) \| Eurozone House Price Index
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(35.40%)	(33.20%)

Expected credit loss measure_12

Expected credit loss measurement - Development of allowance for credit losses (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		$ (1,468)	$ (1,029)	$ (1,054)
ECL movement with profit or loss impact
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[1]	(694)	(78)
Net movement from new and derecognized transactions
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[2]	(28)	(53)
Net movement from new and derecognized transactions \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(2)	(1)
Net movement from new and derecognized transactions \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(3)	(3)
Net movement from new and derecognized transactions \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(32)	(6)
Net movement from new and derecognized transactions \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(16)	(16)
Net movement from new and derecognized transactions \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		26
Net movement from new and derecognized transactions \| Securities financing transactions REIT
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		32
Net movement from new and derecognized transactions \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		9
Net movement from new and derecognized transactions \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		23
Net movement from new and derecognized transactions \| Financial intermediaries
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(20)
Remeasurements with stage transfers
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[3]	(427)	(125)
Remeasurements with stage transfers \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(19)	(5)
Remeasurements with stage transfers \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(6)	5
Remeasurements with stage transfers \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(224)	(45)
Remeasurements with stage transfers \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(43)	(64)
Remeasurements with stage transfers \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(134)
Remeasurements with stage transfers \| Securities financing transactions REIT
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(36)
Remeasurements with stage transfers \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(12)
Remeasurements with stage transfers \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(36)
Remeasurements with stage transfers \| Commodity trade finance
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(59)
Remeasurements without stage transfers
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[4]	(271)	73
Remeasurements without stage transfers \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(34)	22
Remeasurements without stage transfers \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(14)	1
Remeasurements without stage transfers \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(149)	(24)
Remeasurements without stage transfers \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(13)	35
Remeasurements without stage transfers \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(60)
Remeasurements without stage transfers \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(18)
Remeasurements without stage transfers \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(3)
Remeasurements without stage transfers \| Credit cards
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(12)
Model and methodology changes
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[5]	32	26
Other allowance and provision movements
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[6]	254	105
Twelve-month expected credit losses \| Positions that are not credit impaired
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		(306)	(181)	(176)
Twelve-month expected credit losses \| Positions that are not credit impaired \| ECL movement with profit or loss impact
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[1]	(112)	(4)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[2]	(90)	(66)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(3)	(4)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(5)	(5)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(29)	(14)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(14)	(14)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(39)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Securities financing transactions REIT
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(1)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(1)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(6)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Financial intermediaries
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(15)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[3]	45	14
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(2)	1
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		3	4
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		34	4
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(1)	2
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		11
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Securities financing transactions REIT
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		7
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Commodity trade finance
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[4]	(88)	31
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(19)	2
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(4)	0
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(53)	(10)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0	9
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(11)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(12)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		6
Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Credit cards
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
Twelve-month expected credit losses \| Positions that are not credit impaired \| Model and methodology changes
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[5]	21	17
Twelve-month expected credit losses \| Positions that are not credit impaired \| Other allowance and provision movements
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[6]	(14)	(1)
Lifetime expected credit losses \| Net movement from new and derecognized transactions
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		63
Lifetime expected credit losses \| Positions that are not credit impaired
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		(333)	(160)	(183)
Lifetime expected credit losses \| Positions that are not credit impaired \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		(93)
Lifetime expected credit losses \| Positions that are not credit impaired \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		(53)
Lifetime expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		(110)
Lifetime expected credit losses \| Positions that are not credit impaired \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		(38)
Lifetime expected credit losses \| Positions that are not credit impaired \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		(2)
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		(5)
Lifetime expected credit losses \| Positions that are not credit impaired \| Credit cards
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		(14)
Lifetime expected credit losses \| Positions that are not credit impaired \| ECL movement with profit or loss impact
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[1]	(154)	25
Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[2]	17	10
Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		2	3
Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		2	2
Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(4)	8
Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(3)	(2)
Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		20
Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Securities financing transactions REIT
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		15
Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		9
Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Financial intermediaries
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(5)
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[3]	(134)	(35)
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(17)	(5)
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(9)	1
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(83)	(11)
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(11)	(11)
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(14)
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Securities financing transactions REIT
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(18)
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(7)
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Commodity trade finance
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[4]	(47)	41
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(8)	30
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(11)	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(17)	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(7)	10
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(4)
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(3)
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Credit cards
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
Lifetime expected credit losses \| Positions that are not credit impaired \| Model and methodology changes
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[5]	11	9
Lifetime expected credit losses \| Positions that are not credit impaired \| Other allowance and provision movements
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[6]	(19)	(2)
Lifetime expected credit losses \| Credit-impaired positions
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		(829)	(688)	(695)
Lifetime expected credit losses \| Credit-impaired positions \| ECL movement with profit or loss impact
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[1]	(429)	(100)
Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[2]	46	3
Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0	0
Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0	0
Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0	0
Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0	0
Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		46
Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| Securities financing transactions REIT
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		17
Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		29
Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| Financial intermediaries
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[3]	(338)	(105)
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0	(1)
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0	0
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(175)	(38)
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(31)	(55)
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(131)
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| Securities financing transactions REIT
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(19)
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(11)
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(36)
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| Commodity trade finance
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(59)
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[4]	(136)	1
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(7)	(9)
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		1	1
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(79)	(14)
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(6)	17
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(44)
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(3)
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(9)
Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers \| Credit cards
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(12)
Lifetime expected credit losses \| Credit-impaired positions \| Model and methodology changes
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[5]	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Other allowance and provision movements
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[6]	287	108
UBS AG
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Balance				(1,054)
Total ECL allowances and provisions		(1,468)	(1,029)
UBS AG \| ECL movement with profit or loss impact
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[1]	(694)	(78)
UBS AG \| Net movement from new and derecognized transactions
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[2]	(28)	(53)
UBS AG \| Net movement from new and derecognized transactions \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(2)	(1)
UBS AG \| Net movement from new and derecognized transactions \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(3)	(3)
UBS AG \| Net movement from new and derecognized transactions \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(32)	(6)
UBS AG \| Net movement from new and derecognized transactions \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(16)	(16)
UBS AG \| Net movement from new and derecognized transactions \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		26
UBS AG \| Net movement from new and derecognized transactions \| Securities financing transactions REIT
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		32
UBS AG \| Net movement from new and derecognized transactions \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		9
UBS AG \| Net movement from new and derecognized transactions \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		23
UBS AG \| Net movement from new and derecognized transactions \| Financial intermediaries
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(20)
UBS AG \| Remeasurements with stage transfers
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[3]	(427)	(125)
UBS AG \| Remeasurements with stage transfers \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(19)	(5)
UBS AG \| Remeasurements with stage transfers \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(6)	5
UBS AG \| Remeasurements with stage transfers \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(224)	(45)
UBS AG \| Remeasurements with stage transfers \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(43)	(64)
UBS AG \| Remeasurements with stage transfers \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(134)
UBS AG \| Remeasurements with stage transfers \| Securities financing transactions REIT
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(36)
UBS AG \| Remeasurements with stage transfers \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(12)
UBS AG \| Remeasurements with stage transfers \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(36)
UBS AG \| Remeasurements with stage transfers \| Commodity trade finance
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(59)
UBS AG \| Remeasurements without stage transfers
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[4]	(271)	73
UBS AG \| Remeasurements without stage transfers \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(34)	22
UBS AG \| Remeasurements without stage transfers \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(14)	1
UBS AG \| Remeasurements without stage transfers \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(149)	(24)
UBS AG \| Remeasurements without stage transfers \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(13)	35
UBS AG \| Remeasurements without stage transfers \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(60)
UBS AG \| Remeasurements without stage transfers \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(18)
UBS AG \| Remeasurements without stage transfers \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(3)
UBS AG \| Remeasurements without stage transfers \| Credit cards
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(12)
UBS AG \| Model and methodology changes
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[5]	32	26
UBS AG \| Other allowance and provision movements
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[6]	254	105
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Balance				(176)
Total ECL allowances and provisions		(306)	(181)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| ECL movement with profit or loss impact
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[1]	(112)	(4)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[2]	(90)	(66)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(3)	(4)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(5)	(5)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(29)	(14)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(14)	(14)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(39)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Securities financing transactions REIT
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(1)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(1)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(6)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Financial intermediaries
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(15)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[3]	45	14
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(2)	1
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		3	4
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		34	4
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(1)	2
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		11
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Securities financing transactions REIT
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		7
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Commodity trade finance
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[4]	(88)	31
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(19)	2
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(4)	0
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(53)	(10)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0	9
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(11)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(12)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		6
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Credit cards
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Model and methodology changes
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[5]	21	17
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other allowance and provision movements
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[6]	(14)	(1)
UBS AG \| Lifetime expected credit losses \| Net movement from new and derecognized transactions
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		63
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Balance				(183)
Total ECL allowances and provisions		(333)	(160)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		(93)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		(53)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		(110)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		(38)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		(2)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		(5)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Credit cards
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Total ECL allowances and provisions		(14)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| ECL movement with profit or loss impact
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[1]	(154)	25
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[2]	17	10
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		2	3
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		2	2
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(4)	8
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(3)	(2)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		20
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Securities financing transactions REIT
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		15
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		9
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Net movement from new and derecognized transactions \| Financial intermediaries
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(5)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[3]	(134)	(35)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(17)	(5)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(9)	1
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(83)	(11)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(11)	(11)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(14)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Securities financing transactions REIT
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(18)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(7)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements with stage transfers \| Commodity trade finance
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[4]	(47)	41
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(8)	30
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(11)	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(17)	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(7)	10
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(4)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(3)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Remeasurements without stage transfers \| Credit cards
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Model and methodology changes
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[5]	11	9
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other allowance and provision movements
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[6]	(19)	(2)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Balance				$ (695)
Total ECL allowances and provisions		(829)	(688)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| ECL movement with profit or loss impact
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[1]	(429)	(100)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[2]	46	3
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		46
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| Securities financing transactions REIT
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		17
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		29
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Net movement from new and derecognized transactions \| Financial intermediaries
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[3]	(338)	(105)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0	(1)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(175)	(38)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(31)	(55)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(131)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| Securities financing transactions REIT
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(19)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(11)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(36)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements with stage transfers \| Commodity trade finance
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(59)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[4]	(136)	1
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers \| Private clients with mortgages
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(7)	(9)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers \| Real estate financing
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		1	1
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers \| Large corporate clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(79)	(14)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers \| SME clients
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(6)	17
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers \| Other
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(44)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers \| Loans to financial advisors
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(3)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers \| Lombard
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(9)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Remeasurements without stage transfers \| Credit cards
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions		(12)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Model and methodology changes
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[5]	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Other allowance and provision movements
Reconciliation Of Changes In Allowance Account For Credit Losses Of Financial Assets [Line Items]
Development of ECL allowances and provisions	[6]	$ 287	$ 108

[1]	Includes ECL movements from new and derecognized transactions, remeasurement changes, model and methodology changes.
[2]	Represents the increase and decrease in allowances and provisions resulting from financial instruments (including guarantees and facilities) that were newly originated, purchased or renewed and from the final derecognition of loans or facilities on their maturity date or earlier
[3]	Represents the remeasurement between 12-month and lifetime ECL due to stage transfers.
[4]	Represents the change in allowances and provisions related to changes in model inputs or assumptions, including changes in forward-looking macroeconomic conditions, changes in the exposure profile, PD and LGD changes, and unwinding of the time value.
[5]	Represents the change in the allowances and provisions related to changes in models and methodologies.
[6]	Represents the decrease in allowances and provisions resulting from write-offs of the ECL allowance against the gross carrying amount when all or part of a financial asset is deemed uncollectible or forgiven and movements in foreign exchange rates.

Expected credit loss measure_13

Expected credit loss measurement - Stage 2 classification by trigger (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	$ (1,468)	$ (1,029)	$ (1,054)
Twelve-month expected credit losses \| Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(306)	(181)	(176)
Lifetime expected credit losses \| Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(333)	(160)	(183)
Lifetime expected credit losses \| Positions that are not credit impaired \| Private clients with mortgages
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(93)
Lifetime expected credit losses \| Positions that are not credit impaired \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(53)
Lifetime expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(110)
Lifetime expected credit losses \| Positions that are not credit impaired \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(38)
Lifetime expected credit losses \| Positions that are not credit impaired \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(19)
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(5)
Lifetime expected credit losses \| Positions that are not credit impaired \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(14)
Lifetime expected credit losses \| Positions that are not credit impaired \| Other
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(2)
Lifetime expected credit losses \| of which: PD layer
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(252)
Lifetime expected credit losses \| of which: PD layer \| Private clients with mortgages
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(83)
Lifetime expected credit losses \| of which: PD layer \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(45)
Lifetime expected credit losses \| of which: PD layer \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(89)
Lifetime expected credit losses \| of which: PD layer \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(16)
Lifetime expected credit losses \| of which: PD layer \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(19)
Lifetime expected credit losses \| of which: PD layer \| Loans to financial advisors
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
Lifetime expected credit losses \| of which: PD layer \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
Lifetime expected credit losses \| of which: PD layer \| Other
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
Lifetime expected credit losses \| of which: watch list
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(41)
Lifetime expected credit losses \| of which: watch list \| Private clients with mortgages
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
Lifetime expected credit losses \| of which: watch list \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(2)
Lifetime expected credit losses \| of which: watch list \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(20)
Lifetime expected credit losses \| of which: watch list \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(16)
Lifetime expected credit losses \| of which: watch list \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
Lifetime expected credit losses \| of which: watch list \| Loans to financial advisors
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(1)
Lifetime expected credit losses \| of which: watch list \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
Lifetime expected credit losses \| of which: watch list \| Other
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(2)
Lifetime expected credit losses \| of which: 30 days past due
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(40)
Lifetime expected credit losses \| of which: 30 days past due \| Private clients with mortgages
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(11)
Lifetime expected credit losses \| of which: 30 days past due \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(6)
Lifetime expected credit losses \| of which: 30 days past due \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
Lifetime expected credit losses \| of which: 30 days past due \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(5)
Lifetime expected credit losses \| of which: 30 days past due \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
Lifetime expected credit losses \| of which: 30 days past due \| Loans to financial advisors
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(4)
Lifetime expected credit losses \| of which: 30 days past due \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(14)
Lifetime expected credit losses \| of which: 30 days past due \| Other
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
Lifetime expected credit losses \| Credit-impaired positions
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(829)	(688)	$ (695)
UBS AG
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(1,468)	(1,029)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(306)	(181)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(333)	(160)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Private clients with mortgages
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(93)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(53)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(110)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(38)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(19)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans to financial advisors
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(5)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(14)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(2)
UBS AG \| Lifetime expected credit losses \| of which: PD layer
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(252)
UBS AG \| Lifetime expected credit losses \| of which: PD layer \| Private clients with mortgages
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(83)
UBS AG \| Lifetime expected credit losses \| of which: PD layer \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(45)
UBS AG \| Lifetime expected credit losses \| of which: PD layer \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(89)
UBS AG \| Lifetime expected credit losses \| of which: PD layer \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(16)
UBS AG \| Lifetime expected credit losses \| of which: PD layer \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(19)
UBS AG \| Lifetime expected credit losses \| of which: PD layer \| Loans to financial advisors
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
UBS AG \| Lifetime expected credit losses \| of which: PD layer \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
UBS AG \| Lifetime expected credit losses \| of which: PD layer \| Other
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
UBS AG \| Lifetime expected credit losses \| of which: watch list
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(41)
UBS AG \| Lifetime expected credit losses \| of which: watch list \| Private clients with mortgages
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
UBS AG \| Lifetime expected credit losses \| of which: watch list \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(2)
UBS AG \| Lifetime expected credit losses \| of which: watch list \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(20)
UBS AG \| Lifetime expected credit losses \| of which: watch list \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(16)
UBS AG \| Lifetime expected credit losses \| of which: watch list \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
UBS AG \| Lifetime expected credit losses \| of which: watch list \| Loans to financial advisors
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(1)
UBS AG \| Lifetime expected credit losses \| of which: watch list \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
UBS AG \| Lifetime expected credit losses \| of which: watch list \| Other
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(2)
UBS AG \| Lifetime expected credit losses \| of which: 30 days past due
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(40)
UBS AG \| Lifetime expected credit losses \| of which: 30 days past due \| Private clients with mortgages
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(11)
UBS AG \| Lifetime expected credit losses \| of which: 30 days past due \| Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(6)
UBS AG \| Lifetime expected credit losses \| of which: 30 days past due \| Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
UBS AG \| Lifetime expected credit losses \| of which: 30 days past due \| SME clients
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(5)
UBS AG \| Lifetime expected credit losses \| of which: 30 days past due \| Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
UBS AG \| Lifetime expected credit losses \| of which: 30 days past due \| Loans to financial advisors
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(4)
UBS AG \| Lifetime expected credit losses \| of which: 30 days past due \| Credit cards
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	(14)
UBS AG \| Lifetime expected credit losses \| of which: 30 days past due \| Other
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	$ (829)	$ (688)

Expected credit loss measure_14

Expected credit loss measurement - Maximum exposure to credit risk (Detail) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Total maximum exposure to credit risk reflected on the balance sheet in scope of ECL
Credit enhancements
Collateral and credit enhancements related to credit-impaired financial assets measured at amortized cost		$ 1,983	$ 1,720
Collateral and credit enhancements related to off-balance sheet financial instruments and other credit lines for credit-impaired positions		154	27
Total maximum exposure to credit risk reflected on the balance sheet in scope of ECL \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		695,600	583,200
Collateral
Cash collateral received	[1]	26,000	18,600
Collateralized by securities	[1]	185,700	179,400
Secured by real estate	[1]	194,600	174,700
Other collateral	[1],[2]	30,100	24,300
Credit enhancements
Netting	[1]	21,100	14,400
Credit derivative contracts	[1]	0	0
Guarantees	[1]	4,400	1,100
Exposure to credit risk after collateral and credit enhancements		233,700	170,700
Total financial assets measured at amortized cost \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		687,300	576,800
Collateral
Cash collateral received	[1]	26,000	18,600
Collateralized by securities	[1]	185,700	179,400
Secured by real estate	[1]	194,600	174,700
Other collateral	[1],[2]	30,100	24,300
Credit enhancements
Netting	[1]	21,100	14,400
Credit derivative contracts	[1]	0	0
Guarantees	[1]	4,400	1,100
Exposure to credit risk after collateral and credit enhancements		225,500	164,400
Cash and balances at central banks \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		158,200	107,100
Credit enhancements
Exposure to credit risk after collateral and credit enhancements		158,200	107,100
Loans and advances to banks \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk	[3]	15,400	12,400
Collateral
Collateralized by securities	[1],[3]	100	0
Credit enhancements
Exposure to credit risk after collateral and credit enhancements	[3]	15,300	12,400
Receivables from securities financing transactions \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		74,200	84,200
Collateral
Cash collateral received	[1]	0
Collateralized by securities	[1]	67,100	77,600
Other collateral	[1],[2]	7,000	5,800
Credit enhancements
Exposure to credit risk after collateral and credit enhancements		0	800
Cash collateral receivables on derivative instruments \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk	[4],[5]	32,700	23,300
Credit enhancements
Netting	[1],[4],[5]	21,100	14,400
Exposure to credit risk after collateral and credit enhancements	[4],[5]	11,600	8,900
Loans and advances to customers \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk	[6]	379,500	326,800
Collateral
Cash collateral received	[1],[6]	25,800	18,400
Collateralized by securities	[1],[6]	118,200	101,400
Secured by real estate	[1],[6]	194,600	174,700
Other collateral	[1],[2],[6]	21,700	17,100
Credit enhancements
Guarantees	[1],[6]	4,400	1,100
Exposure to credit risk after collateral and credit enhancements	[6]	14,800	14,000
Other financial assets measured at amortized cost \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		27,200	23,000
Collateral
Cash collateral received	[1]	100	100
Collateralized by securities	[1]	200	400
Secured by real estate	[1]		0
Other collateral	[1],[2]	1,300	1,300
Credit enhancements
Exposure to credit risk after collateral and credit enhancements		25,500	21,100
Financial assets measured at fair value through other comprehensive income - debt \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		8,300	6,300
Credit enhancements
Exposure to credit risk after collateral and credit enhancements		8,300	6,300
Total maximum exposure to credit risk not reflected on the balance sheet \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		101,600	82,300
Collateral
Cash collateral received	[1]	800	1,500
Collateralized by securities	[1]	22,700	14,900
Secured by real estate	[1]	8,500	6,300
Other collateral	[1],[2]	11,200	11,000
Credit enhancements
Netting	[1]	0	0
Credit derivative contracts	[1]	400	200
Guarantees	[1]	4,900	2,800
Exposure to credit risk after collateral and credit enhancements		53,000	45,700
Guarantees \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk	[7]	17,000	18,100
Collateral
Cash collateral received	[1],[7]	700	1,000
Collateralized by securities	[1],[7]	5,000	3,000
Secured by real estate	[1],[7]	200	100
Other collateral	[1],[2],[7]	1,700	1,700
Credit enhancements
Guarantees	[1],[7]	2,500	2,500
Exposure to credit risk after collateral and credit enhancements	[7]	7,000	9,800
Loan commitments \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk	[7]	41,200	27,500
Collateral
Cash collateral received	[1],[7]	0	200
Collateralized by securities	[1],[7]	4,200	1,900
Secured by real estate	[1],[7]	2,100	1,300
Other collateral	[1],[2],[7]	6,800	5,800
Credit enhancements
Credit derivative contracts	[1],[7]	400	200
Guarantees	[1],[7]	2,400	200
Exposure to credit risk after collateral and credit enhancements	[7]	25,300	18,000
Forward starting reverse repurchase and securities borrowing agreements \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		3,200	1,700
Collateral
Collateralized by securities	[1]	3,200	1,700
Credit enhancements
Exposure to credit risk after collateral and credit enhancements		0	0
Committed unconditionally revocable credit lines \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		40,100	35,100
Collateral
Cash collateral received	[1]	100	300
Collateralized by securities	[1]	10,300	8,300
Secured by real estate	[1]	6,200	4,900
Other collateral	[1],[2]	2,700	3,600
Credit enhancements
Guarantees	[1]	0	0
Exposure to credit risk after collateral and credit enhancements		20,700	17,900
UBS AG \| Total maximum exposure to credit risk reflected on the balance sheet in scope of ECL
Credit enhancements
Collateral and credit enhancements related to credit-impaired financial assets measured at amortized cost		1,983	1,720
Collateral and credit enhancements related to off-balance sheet financial instruments and other credit lines for credit-impaired positions		154	27
UBS AG \| Total maximum exposure to credit risk reflected on the balance sheet in scope of ECL \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		697,000	584,300
Collateral
Cash collateral received	[1]	27,200	19,500
Collateralized by securities	[1]	185,700	179,400
Secured by real estate	[1]	194,600	174,700
Other collateral	[1],[2]	30,100	24,300
Credit enhancements
Netting	[1]	21,100	14,400
Credit derivative contracts	[1]	0	0
Guarantees	[1]	4,400	1,100
Exposure to credit risk after collateral and credit enhancements		233,900	171,000
UBS AG \| Total financial assets measured at amortized cost \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		688,700	578,000
Collateral
Cash collateral received	[1]	27,200	19,500
Collateralized by securities	[1]	185,700	179,400
Secured by real estate	[1]	194,600	174,700
Other collateral	[1],[2]	30,100	24,300
Credit enhancements
Netting	[1]	21,100	14,400
Credit derivative contracts	[1]	0	0
Guarantees	[1]	4,400	1,100
Exposure to credit risk after collateral and credit enhancements		225,600	164,600
UBS AG \| Cash and balances at central banks \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		158,200	107,100
Credit enhancements
Exposure to credit risk after collateral and credit enhancements		158,200	107,100
UBS AG \| Loans and advances to banks \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk	[3]	15,300	12,400
Collateral
Collateralized by securities	[1],[3]	100	0
Credit enhancements
Exposure to credit risk after collateral and credit enhancements	[3]	15,200	12,300
UBS AG \| Receivables from securities financing transactions \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		74,200	84,200
Collateral
Cash collateral received	[1]	0
Collateralized by securities	[1]	67,100	77,600
Other collateral	[1],[2]	7,000	5,800
Credit enhancements
Exposure to credit risk after collateral and credit enhancements		0	800
UBS AG \| Cash collateral receivables on derivative instruments \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk	[4],[5]	32,700	23,300
Credit enhancements
Netting	[1],[4],[5]	21,100	14,400
Exposure to credit risk after collateral and credit enhancements	[4],[5]	11,600	8,900
UBS AG \| Loans and advances to customers \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk	[6]	381,000	328,000
Collateral
Cash collateral received	[1],[6]	27,000	19,400
Collateralized by securities	[1],[6]	118,200	101,400
Secured by real estate	[1],[6]	194,600	174,700
Other collateral	[1],[2],[6]	21,700	17,100
Credit enhancements
Credit derivative contracts	[1],[6]	0
Guarantees	[1],[6]	4,400	1,100
Exposure to credit risk after collateral and credit enhancements	[6]	15,100	14,300
UBS AG \| Other financial assets measured at amortized cost \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		27,200	23,000
Collateral
Cash collateral received	[1]	100	100
Collateralized by securities	[1]	200	400
Secured by real estate	[1]	0	0
Other collateral	[1],[2]	1,300	1,300
Credit enhancements
Exposure to credit risk after collateral and credit enhancements		25,500	21,200
UBS AG \| Financial assets measured at fair value through other comprehensive income - debt \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		8,300	6,300
Credit enhancements
Exposure to credit risk after collateral and credit enhancements		8,300	6,300
UBS AG \| Total maximum exposure to credit risk not reflected on the balance sheet \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		103,500	84,200
Collateral
Cash collateral received	[1]	800	1,500
Collateralized by securities	[1]	22,700	14,900
Secured by real estate	[1]	8,500	6,300
Other collateral	[1],[2]	11,200	11,000
Credit enhancements
Netting	[1]	0	0
Credit derivative contracts	[1]	400	200
Guarantees	[1]	4,900	2,800
Exposure to credit risk after collateral and credit enhancements		54,900	47,600
UBS AG \| Guarantees \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk	[7]	17,000	18,100
Collateral
Cash collateral received	[1],[7]	700	1,000
Collateralized by securities	[1],[7]	5,000	3,000
Secured by real estate	[1],[7]	200	100
Other collateral	[1],[2],[7]	1,700	1,700
Credit enhancements
Guarantees	[1],[7]	2,500	2,500
Exposure to credit risk after collateral and credit enhancements	[7]	7,000	9,800
UBS AG \| Loan commitments \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk	[7]	41,200	27,500
Collateral
Cash collateral received	[1],[7]	0	200
Collateralized by securities	[1],[7]	4,200	1,900
Secured by real estate	[1],[7]	2,100	1,300
Other collateral	[1],[2],[7]	6,800	5,800
Credit enhancements
Credit derivative contracts	[1],[7]	400	200
Guarantees	[1],[7]	2,400	200
Exposure to credit risk after collateral and credit enhancements	[7]	25,300	18,000
UBS AG \| Forward starting reverse repurchase and securities borrowing agreements \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		3,200	1,700
Collateral
Collateralized by securities	[1]	3,200	1,700
Credit enhancements
Exposure to credit risk after collateral and credit enhancements		0	0
UBS AG \| Committed unconditionally revocable credit lines \| Financial Assets At Amortised Cost [Member]
Maximum Exposure To Credit Risk Expected Credit Loss [Line Items]
Maximum exposure to credit risk		42,000	36,900
Collateral
Cash collateral received	[1]	100	300
Collateralized by securities	[1]	10,300	8,300
Secured by real estate	[1]	6,200	4,900
Other collateral	[1],[2]	2,700	3,600
Credit enhancements
Guarantees	[1]	0	0
Exposure to credit risk after collateral and credit enhancements		$ 22,700	$ 19,800

[1]	Of which: USD 1,983 million for 31 December 2020 (31 December 2019: USD 1,720 million) relates to total credit-impaired financial assets measured at amortized cost and USD 154 million for 31 December 2020 (31 December 2019: USD 27 million) to total off-balance sheet financial instruments and other credit lines for credit-impaired positions
[2]	Includes but is not limited to life insurance contracts, inventory, mortgage loans, gold and other commodities
[3]	Loans and advances to banks include amounts held with third-party banks on behalf of clients. The credit risk associated with these balances may be borne by those clients.
[4]	Included within Cash collateral receivables on derivative instruments are margin balances due from exchanges or clearing houses. Some of these margin balances reflect amounts transferred on behalf of clients who retain the associated credit risk.
[5]	The amount shown in the “Netting” column represents the netting potential not recognized on the balance sheet. Refer to Note 22 for more information.
[6]	Collateral arrangements generally incorporate a range of collateral, including cash, securities, property and other collateral.
[7]	The amount shown in the “Guarantees” column includes sub-participations.

Expected credit loss measure_15

Expected credit loss measurement - Financial assets subject to credit risk by rating category (Detail) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	$ 695,603	$ 583,159
Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	687,345	576,815
Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	158,231	107,068
Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	15,444	12,447
Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	74,210	84,245
Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	32,737	23,289
Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	379,528	326,786
Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	27,194	22,980
Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		8,258	6,345
Twelve-month expected credit losses \| Positions that are not credit impaired \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	672,021	564,765
Twelve-month expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	663,763	558,420
Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	158,231	107,068
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	15,260	12,367
Twelve-month expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	74,210	84,245
Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	32,737	23,289
Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	356,948	309,499
Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	26,377	21,953
Lifetime expected credit losses \| Positions that are not credit impaired \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	20,873	16,069
Lifetime expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	20,873	16,069
Lifetime expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	184	80
Lifetime expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	20,341	15,538
Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	348	451
Lifetime expected credit losses \| Credit-impaired positions \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	2,709	2,326
Lifetime expected credit losses \| Credit-impaired positions \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	2,709	2,326
Lifetime expected credit losses \| Credit-impaired positions \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	2,240	1,749
Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	469	576
Gross carrying amount \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		696,815	584,075
Gross carrying amount \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		688,556	577,730
Gross carrying amount \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		158,231	107,068
Gross carrying amount \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		15,460	12,454
Gross carrying amount \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		74,212	84,246
Gross carrying amount \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		32,737	23,289
Gross carrying amount \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		380,589	327,550
Gross carrying amount \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		27,327	23,123
Gross carrying amount \| Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		8,258	6,345
Gross carrying amount \| Rating category 0-1 \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		212,417	152,120
Gross carrying amount \| Rating category 0-1 \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		209,204	146,267
Gross carrying amount \| Rating category 0-1 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		156,250	105,195
Gross carrying amount \| Rating category 0-1 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		543	309
Gross carrying amount \| Rating category 0-1 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		22,998	21,089
Gross carrying amount \| Rating category 0-1 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		8,196	4,899
Gross carrying amount \| Rating category 0-1 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		5,813	1,744
Gross carrying amount \| Rating category 0-1 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		15,404	13,031
Gross carrying amount \| Rating category 0-1 \| Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		3,212	5,854
Gross carrying amount \| Rating category 2-3 \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		266,936	216,139
Gross carrying amount \| Rating category 2-3 \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		261,922	215,690
Gross carrying amount \| Rating category 2-3 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,981	1,873
Gross carrying amount \| Rating category 2-3 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		12,129	9,832
Gross carrying amount \| Rating category 2-3 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		16,009	16,889
Gross carrying amount \| Rating category 2-3 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		13,477	10,553
Gross carrying amount \| Rating category 2-3 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		214,307	174,982
Gross carrying amount \| Rating category 2-3 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		4,018	1,560
Gross carrying amount \| Rating category 2-3 \| Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		5,014	450
Gross carrying amount \| Rating category 4-5 \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		91,993	80,354
Gross carrying amount \| Rating category 4-5 \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		91,993	80,354
Gross carrying amount \| Rating category 4-5 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Rating category 4-5 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,344	1,326
Gross carrying amount \| Rating category 4-5 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		15,367	14,366
Gross carrying amount \| Rating category 4-5 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		7,733	5,033
Gross carrying amount \| Rating category 4-5 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		67,270	59,240
Gross carrying amount \| Rating category 4-5 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		280	390
Gross carrying amount \| Rating category 4-5 \| Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Rating category 6-8 \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		98,255	109,994
Gross carrying amount \| Rating category 6-8 \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		98,223	109,952
Gross carrying amount \| Rating category 6-8 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Rating category 6-8 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,182	687
Gross carrying amount \| Rating category 6-8 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		17,995	28,815
Gross carrying amount \| Rating category 6-8 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		3,243	2,765
Gross carrying amount \| Rating category 6-8 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		69,217	70,528
Gross carrying amount \| Rating category 6-8 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		6,585	7,158
Gross carrying amount \| Rating category 6-8 \| Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		32	41
Gross carrying amount \| Rating category 9-13 \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		23,709	22,485
Gross carrying amount \| Rating category 9-13 \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		23,709	22,485
Gross carrying amount \| Rating category 9-13 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Rating category 9-13 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		260	298
Gross carrying amount \| Rating category 9-13 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,842	3,088
Gross carrying amount \| Rating category 9-13 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		88	39
Gross carrying amount \| Rating category 9-13 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		21,038	18,748
Gross carrying amount \| Rating category 9-13 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		481	312
Gross carrying amount \| Rating category 9-13 \| Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Rating category Defaulted \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		3,505	2,981
Gross carrying amount \| Rating category Defaulted \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		3,505	2,981
Gross carrying amount \| Rating category Defaulted \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Rating category Defaulted \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1	1
Gross carrying amount \| Rating category Defaulted \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Rating category Defaulted \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Rating category Defaulted \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		2,943	2,308
Gross carrying amount \| Rating category Defaulted \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		560	672
Gross carrying amount \| Rating category Defaulted \| Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		158,231	107,068
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		15,269	12,371
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		74,212	84,246
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		32,737	23,289
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		357,090	309,581
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		26,410	21,988
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		156,250	105,195
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		543	309
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		22,998	21,089
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		8,196	4,899
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		5,813	1,744
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		15,404	13,031
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,981	1,873
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		12,074	9,832
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		16,009	16,889
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		13,477	10,553
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		212,970	174,328
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		4,015	1,549
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,277	1,326
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		15,367	14,366
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		7,733	5,033
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		63,000	56,957
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		269	381
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,145	677
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		17,995	28,815
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		3,243	2,765
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		59,447	62,435
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		6,334	6,747
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		231	228
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,842	3,088
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		88	39
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		15,860	14,117
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		389	280
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		189	81
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		20,556	15,661
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		357	463
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		55	0
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,338	655
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		3	11
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		67	0
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		4,269	2,283
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		11	9
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		37	10
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		9,770	8,093
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		251	412
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		29	71
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		5,178	4,631
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		91	32
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1	1
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		2,943	2,308
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		560	672
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 0-1 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 0-1 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 0-1 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 2-3 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 2-3 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 2-3 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 4-5 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 4-5 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 4-5 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 6-8 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 6-8 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 6-8 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 9-13 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 9-13 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 9-13 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category Defaulted \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1	1
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category Defaulted \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		2,943	2,308
Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category Defaulted \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		560	672
Allowance for expected credit loss \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(1,211)	(915)
Allowance for expected credit loss \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(1,211)	(915)
Allowance for expected credit loss \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(16)	(6)
Allowance for expected credit loss \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(2)	(2)
Allowance for expected credit loss \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(1,060)	(764)
Allowance for expected credit loss \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(133)	(143)
Allowance for expected credit loss \| Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(187)	(124)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(187)	(124)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(9)	(4)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(2)	(2)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(142)	(82)
Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(34)	(35)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(229)	(137)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(229)	(137)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(5)	(1)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(215)	(123)
Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(9)	(13)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(795)	(655)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(795)	(655)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(1)	(1)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(703)	(559)
Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(90)	(95)
UBS AG \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	696,976	584,329
UBS AG \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	688,717	577,985
UBS AG \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	158,231	107,068
UBS AG \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	15,344	12,379
UBS AG \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	74,210	84,245
UBS AG \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	32,737	23,289
UBS AG \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	380,977	327,992
UBS AG \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	27,219	23,012
UBS AG \| Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		8,258	6,345
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	673,394	565,935
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	665,135	559,590
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	158,231	107,068
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	15,160	12,298
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	74,210	84,245
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	32,737	23,289
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	358,396	310,705
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	26,401	21,985
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	20,873	16,069
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	20,873	16,069
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	184	80
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	20,341	15,538
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	348	451
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	2,709	2,326
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	2,709	2,326
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	2,240	1,749
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets	[1]	469	576
UBS AG \| Gross carrying amount \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		698,187	585,245
UBS AG \| Gross carrying amount \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		689,929	578,899
UBS AG \| Gross carrying amount \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		158,231	107,068
UBS AG \| Gross carrying amount \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		15,360	12,386
UBS AG \| Gross carrying amount \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		74,212	84,246
UBS AG \| Gross carrying amount \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		32,737	23,289
UBS AG \| Gross carrying amount \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		382,036	328,756
UBS AG \| Gross carrying amount \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		27,352	23,154
UBS AG \| Gross carrying amount \| Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		8,258	6,345
UBS AG \| Gross carrying amount \| Rating category 0-1 \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		212,417	152,120
UBS AG \| Gross carrying amount \| Rating category 0-1 \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		209,204	146,267
UBS AG \| Gross carrying amount \| Rating category 0-1 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		156,250	105,195
UBS AG \| Gross carrying amount \| Rating category 0-1 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		543	309
UBS AG \| Gross carrying amount \| Rating category 0-1 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		22,998	21,089
UBS AG \| Gross carrying amount \| Rating category 0-1 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		8,196	4,899
UBS AG \| Gross carrying amount \| Rating category 0-1 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		5,813	1,744
UBS AG \| Gross carrying amount \| Rating category 0-1 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		15,404	13,030
UBS AG \| Gross carrying amount \| Rating category 0-1 \| Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		3,212	5,854
UBS AG \| Gross carrying amount \| Rating category 2-3 \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		268,309	217,309
UBS AG \| Gross carrying amount \| Rating category 2-3 \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		263,295	216,860
UBS AG \| Gross carrying amount \| Rating category 2-3 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,981	1,873
UBS AG \| Gross carrying amount \| Rating category 2-3 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		12,029	9,764
UBS AG \| Gross carrying amount \| Rating category 2-3 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		16,009	16,889
UBS AG \| Gross carrying amount \| Rating category 2-3 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		13,477	10,553
UBS AG \| Gross carrying amount \| Rating category 2-3 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		215,755	176,189
UBS AG \| Gross carrying amount \| Rating category 2-3 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		4,043	1,592
UBS AG \| Gross carrying amount \| Rating category 2-3 \| Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		5,014	450
UBS AG \| Gross carrying amount \| Rating category 4-5 \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		91,993	80,354
UBS AG \| Gross carrying amount \| Rating category 4-5 \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		91,993	80,354
UBS AG \| Gross carrying amount \| Rating category 4-5 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Rating category 4-5 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,344	1,326
UBS AG \| Gross carrying amount \| Rating category 4-5 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		15,367	14,366
UBS AG \| Gross carrying amount \| Rating category 4-5 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		7,733	5,033
UBS AG \| Gross carrying amount \| Rating category 4-5 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		67,270	59,240
UBS AG \| Gross carrying amount \| Rating category 4-5 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		280	390
UBS AG \| Gross carrying amount \| Rating category 4-5 \| Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Rating category 6-8 \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		98,255	109,994
UBS AG \| Gross carrying amount \| Rating category 6-8 \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		98,223	109,952
UBS AG \| Gross carrying amount \| Rating category 6-8 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Rating category 6-8 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,182	687
UBS AG \| Gross carrying amount \| Rating category 6-8 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		17,995	28,815
UBS AG \| Gross carrying amount \| Rating category 6-8 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		3,243	2,765
UBS AG \| Gross carrying amount \| Rating category 6-8 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		69,217	70,528
UBS AG \| Gross carrying amount \| Rating category 6-8 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		6,585	7,158
UBS AG \| Gross carrying amount \| Rating category 6-8 \| Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		32	41
UBS AG \| Gross carrying amount \| Rating category 9-13 \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		23,709	22,485
UBS AG \| Gross carrying amount \| Rating category 9-13 \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		23,709	22,485
UBS AG \| Gross carrying amount \| Rating category 9-13 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Rating category 9-13 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		260	298
UBS AG \| Gross carrying amount \| Rating category 9-13 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,842	3,088
UBS AG \| Gross carrying amount \| Rating category 9-13 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		88	39
UBS AG \| Gross carrying amount \| Rating category 9-13 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		21,038	18,748
UBS AG \| Gross carrying amount \| Rating category 9-13 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		481	312
UBS AG \| Gross carrying amount \| Rating category 9-13 \| Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Rating category Defaulted \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		3,505	2,981
UBS AG \| Gross carrying amount \| Rating category Defaulted \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		3,505	2,981
UBS AG \| Gross carrying amount \| Rating category Defaulted \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Rating category Defaulted \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1	1
UBS AG \| Gross carrying amount \| Rating category Defaulted \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Rating category Defaulted \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Rating category Defaulted \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		2,943	2,308
UBS AG \| Gross carrying amount \| Rating category Defaulted \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		560	672
UBS AG \| Gross carrying amount \| Rating category Defaulted \| Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		158,231	107,068
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		15,170	12,303
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		74,212	84,246
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		32,737	23,289
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		358,538	310,787
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		26,435	22,019
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		156,250	105,195
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		543	309
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		22,998	21,089
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		8,196	4,899
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		5,813	1,744
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		15,404	13,030
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,981	1,873
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		11,974	9,764
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		16,009	16,889
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		13,477	10,553
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		214,418	175,534
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		4,040	1,581
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,277	1,326
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		15,367	14,366
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		7,733	5,033
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		63,000	56,957
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		269	381
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,145	677
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		17,995	28,815
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		3,243	2,765
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		59,447	62,435
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		6,334	6,747
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		231	228
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,842	3,088
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		88	39
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		15,860	14,117
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		389	280
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		189	81
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		20,556	15,661
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		357	463
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		55	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1,338	655
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		3	11
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		67	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		4,269	2,283
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		11	9
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		37	10
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		9,770	8,093
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		251	412
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		29	71
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		5,178	4,631
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		91	32
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1	1
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		2,943	2,308
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		560	672
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 0-1 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 0-1 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 0-1 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 2-3 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 2-3 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 2-3 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 4-5 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 4-5 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 4-5 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 6-8 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 6-8 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 6-8 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 9-13 \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 9-13 \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 9-13 \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category Defaulted \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		1	1
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category Defaulted \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		2,943	2,308
UBS AG \| Gross carrying amount \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category Defaulted \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		560	672
UBS AG \| Allowance for expected credit loss \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(1,211)	(915)
UBS AG \| Allowance for expected credit loss \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(1,211)	(915)
UBS AG \| Allowance for expected credit loss \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(16)	(6)
UBS AG \| Allowance for expected credit loss \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(2)	(2)
UBS AG \| Allowance for expected credit loss \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(1,060)	(764)
UBS AG \| Allowance for expected credit loss \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(133)	(143)
UBS AG \| Allowance for expected credit loss \| Financial assets measured at FVOCI - debt instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(187)	(124)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(187)	(124)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(9)	(4)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(2)	(2)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(142)	(82)
UBS AG \| Allowance for expected credit loss \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(34)	(35)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(229)	(137)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(229)	(137)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(5)	(1)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(215)	(123)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Positions that are not credit impaired \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(9)	(13)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Total on balance sheet financial instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(795)	(655)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Total financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(795)	(655)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Cash and balances at central banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to banks
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(1)	(1)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Receivables from securities financing transactions
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Cash collateral receivables on derivative instruments
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		0	0
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Loans and advances to customers
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		(703)	(559)
UBS AG \| Allowance for expected credit loss \| Lifetime expected credit losses \| Credit-impaired positions \| Other financial assets measured at amortized cost
Disclosure Of Internal Credit Exposures [Line Items]
Financial assets		$ (90)	$ (95)

[1]	The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances.

Expected credit loss measure_16

Expected credit loss measurement - Off balance sheet positions subject to expected credit loss by rating category (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	$ 105,116	$ 85,728
ECL provision	(257)	(114)
Off Balance Sheet Financial Instruments Without Other Credit Lines [Member]
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	61,700	47,347
ECL provision	(205)	(77)
Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	17,081	18,142
ECL provision	(63)	(42)
Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	41,372	27,547
ECL provision	(142)	(35)
Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,247	1,657
ECL provision	0	0
Total other credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	43,416	38,381
ECL provision	(52)	(37)
Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	40,134	35,092
ECL provision	(50)	(34)
Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,282	3,289
ECL provision	(2)	(3)
Rating category 0-1 \| Off Balance Sheet Financial Instruments Without Other Credit Lines [Member]
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	6,583	3,405
Rating category 0-1 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,482	857
Rating category 0-1 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,018	2,548
Rating category 0-1 \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	82	0
Rating category 0-1 \| Total other credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	588	657
Rating category 0-1 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	574	632
Rating category 0-1 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	14	25
Rating category 2-3 \| Off Balance Sheet Financial Instruments Without Other Credit Lines [Member]
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	19,289	15,672
Rating category 2-3 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	4,623	4,932
Rating category 2-3 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	14,516	10,068
Rating category 2-3 \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	150	672
Rating category 2-3 \| Total other credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	14,854	13,858
Rating category 2-3 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	13,505	12,459
Rating category 2-3 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1,349	1,399
Rating category 4-5 \| Off Balance Sheet Financial Instruments Without Other Credit Lines [Member]
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	12,105	10,972
Rating category 4-5 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,522	6,060
Rating category 4-5 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	8,583	4,862
Rating category 4-5 \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	50
Rating category 4-5 \| Total other credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	6,889	7,101
Rating category 4-5 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	5,958	6,231
Rating category 4-5 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	931	870
Rating category 6-8 \| Off Balance Sheet Financial Instruments Without Other Credit Lines [Member]
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	16,610	12,245
Rating category 6-8 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	4,293	5,450
Rating category 6-8 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	9,302	5,859
Rating category 6-8 \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,015	936
Rating category 6-8 \| Total other credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	9,119	7,801
Rating category 6-8 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	8,488	7,169
Rating category 6-8 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	632	633
Rating category 9-13 \| Off Balance Sheet Financial Instruments Without Other Credit Lines [Member]
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	6,840	4,922
Rating category 9-13 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	991	761
Rating category 9-13 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	5,850	4,160
Rating category 9-13 \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Rating category 9-13 \| Total other credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	11,858	8,913
Rating category 9-13 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	11,501	8,554
Rating category 9-13 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	357	359
Rating category Defaulted \| Off Balance Sheet Financial Instruments Without Other Credit Lines [Member]
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	273	132
Rating category Defaulted \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	170	82
Rating category Defaulted \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	104	50
Rating category Defaulted \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Rating category Defaulted \| Total other credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	109	50
Rating category Defaulted \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	108	46
Rating category Defaulted \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	4
Twelve-month expected credit losses \| Positions that are not credit impaired
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	93,337	83,626
ECL provision	(119)	(58)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	14,687	17,757
ECL provision	(14)	(8)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	36,894	27,078
ECL provision	(74)	(30)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,247	1,657
ECL provision	0	0
Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	35,233	33,848
ECL provision	(29)	(17)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,277	3,285
ECL provision	(2)	(3)
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,482	857
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,018	2,548
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	574	628
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	14	25
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	4,219	4,931
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	13,589	10,068
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	12,940	12,422
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1,349	1,399
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	2,688	6,048
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	6,873	4,862
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	4,517	6,120
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	930	870
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,558	5,218
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	8,739	5,722
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	6,609	6,789
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	630	633
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	739	704
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	4,676	3,878
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	10,593	7,889
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	355	359
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Positions that are not credit impaired
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	11,396	1,920
ECL provision	(104)	(23)
Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	2,225	304
ECL provision	(15)	(1)
Lifetime expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	4,374	419
ECL provision	(68)	(5)
Lifetime expected credit losses \| Positions that are not credit impaired \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
ECL provision	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	4,792	1,197
ECL provision	(21)	(17)
Lifetime expected credit losses \| Positions that are not credit impaired \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	5	0
ECL provision	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	4
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	404	1
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	927	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	565	37
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	834	12
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1,711	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1,441	111
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	736	233
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	563	137
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1,879	380
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	2	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	252	57
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1,174	282
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	908	665
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	382	182
ECL provision	(34)	(33)
Lifetime expected credit losses \| Credit-impaired positions \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	170	82
ECL provision	(34)	(33)
Lifetime expected credit losses \| Credit-impaired positions \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	104	50
ECL provision	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
ECL provision	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	108	46
ECL provision	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	4
ECL provision	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 0-1 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 0-1 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 0-1 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 0-1 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 2-3 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 2-3 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 2-3 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 2-3 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 4-5 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 4-5 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 4-5 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 4-5 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 6-8 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 6-8 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 6-8 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 6-8 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 9-13 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 9-13 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 9-13 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category 9-13 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
Lifetime expected credit losses \| Credit-impaired positions \| Rating category Defaulted \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	170	82
Lifetime expected credit losses \| Credit-impaired positions \| Rating category Defaulted \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	104	50
Lifetime expected credit losses \| Credit-impaired positions \| Rating category Defaulted \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	108	46
Lifetime expected credit losses \| Credit-impaired positions \| Rating category Defaulted \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	4
UBS AG
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	107,059	87,614
ECL provision	(257)	(114)
UBS AG \| Off Balance Sheet Financial Instruments Without Other Credit Lines [Member]
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	61,700	47,347
ECL provision	(205)	(77)
UBS AG \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	17,081	18,142
ECL provision	(63)	(42)
UBS AG \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	41,372	27,547
ECL provision	(142)	(35)
UBS AG \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,247	1,657
ECL provision	0	0
UBS AG \| Total other credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	45,359	40,268
ECL provision	(52)	(37)
UBS AG \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	42,077	36,979
ECL provision	(50)	(34)
UBS AG \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,282	3,289
ECL provision	(2)	(3)
UBS AG \| Rating category 0-1 \| Off Balance Sheet Financial Instruments Without Other Credit Lines [Member]
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	6,583	3,405
UBS AG \| Rating category 0-1 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,482	857
UBS AG \| Rating category 0-1 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,018	2,548
UBS AG \| Rating category 0-1 \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	82	0
UBS AG \| Rating category 0-1 \| Total other credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	588	657
UBS AG \| Rating category 0-1 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	574	632
UBS AG \| Rating category 0-1 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	14	25
UBS AG \| Rating category 2-3 \| Off Balance Sheet Financial Instruments Without Other Credit Lines [Member]
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	19,289	15,672
UBS AG \| Rating category 2-3 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	4,623	4,932
UBS AG \| Rating category 2-3 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	14,516	10,068
UBS AG \| Rating category 2-3 \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	150	672
UBS AG \| Rating category 2-3 \| Total other credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	16,797	15,745
UBS AG \| Rating category 2-3 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	15,448	14,346
UBS AG \| Rating category 2-3 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1,349	1,399
UBS AG \| Rating category 4-5 \| Off Balance Sheet Financial Instruments Without Other Credit Lines [Member]
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	12,105	10,972
UBS AG \| Rating category 4-5 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,522	6,060
UBS AG \| Rating category 4-5 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	8,583	4,862
UBS AG \| Rating category 4-5 \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	50
UBS AG \| Rating category 4-5 \| Total other credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	6,889	7,101
UBS AG \| Rating category 4-5 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	5,958	6,231
UBS AG \| Rating category 4-5 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	931	870
UBS AG \| Rating category 6-8 \| Off Balance Sheet Financial Instruments Without Other Credit Lines [Member]
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	16,610	12,245
UBS AG \| Rating category 6-8 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	4,293	5,450
UBS AG \| Rating category 6-8 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	9,302	5,859
UBS AG \| Rating category 6-8 \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,015	936
UBS AG \| Rating category 6-8 \| Total other credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	9,119	7,801
UBS AG \| Rating category 6-8 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	8,488	7,169
UBS AG \| Rating category 6-8 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	632	633
UBS AG \| Rating category 9-13 \| Off Balance Sheet Financial Instruments Without Other Credit Lines [Member]
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	6,840	4,922
UBS AG \| Rating category 9-13 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	991	761
UBS AG \| Rating category 9-13 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	5,850	4,160
UBS AG \| Rating category 9-13 \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Rating category 9-13 \| Total other credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	11,858	8,913
UBS AG \| Rating category 9-13 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	11,501	8,554
UBS AG \| Rating category 9-13 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	357	359
UBS AG \| Rating category Defaulted \| Off Balance Sheet Financial Instruments Without Other Credit Lines [Member]
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	273	132
UBS AG \| Rating category Defaulted \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	170	82
UBS AG \| Rating category Defaulted \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	104	50
UBS AG \| Rating category Defaulted \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Rating category Defaulted \| Total other credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	109	50
UBS AG \| Rating category Defaulted \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	108	46
UBS AG \| Rating category Defaulted \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	4
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	95,281	85,513
ECL provision	(119)	(58)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	14,687	17,757
ECL provision	(14)	(8)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	36,894	27,078
ECL provision	(74)	(30)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,247	1,657
ECL provision	0	0
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	37,176	35,735
ECL provision	(29)	(17)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,277	3,285
ECL provision	(2)	(3)
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,482	857
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,018	2,548
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	574	632
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	14	25
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	4,219	4,931
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	13,589	10,068
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	14,883	14,309
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1,349	1,399
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	2,688	6,048
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	6,873	4,862
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	4,517	6,120
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	930	870
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	3,558	5,218
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	8,739	5,722
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	6,609	6,789
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	630	633
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	739	704
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	4,676	3,878
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	10,593	7,885
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	355	359
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Twelve-month expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	11,396	1,920
ECL provision	(104)	(23)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	2,225	304
ECL provision	(15)	(1)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	4,374	419
ECL provision	(68)	(5)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	4,792	1,197
ECL provision	(21)	(17)
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	5	0
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 0-1 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	404	1
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	927	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	565	37
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 2-3 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	834	12
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1,711	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1,441	111
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 4-5 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	736	233
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	563	137
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1,879	380
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 6-8 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	2	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	252	57
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1,174	282
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	908	669
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category 9-13 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	1	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Positions that are not credit impaired \| Rating category Defaulted \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	382	182
ECL provision	(34)	(33)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	170	82
ECL provision	(34)	(33)
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	104	50
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	108	46
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	4
ECL provision	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 0-1 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 0-1 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 0-1 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 0-1 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 2-3 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 2-3 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 2-3 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 2-3 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 4-5 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 4-5 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 4-5 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 4-5 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 6-8 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 6-8 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 6-8 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 6-8 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 9-13 \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 9-13 \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 9-13 \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category 9-13 \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	0	0
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category Defaulted \| Guarantees
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	170	82
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category Defaulted \| Irrevocable loan commitments
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	104	50
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category Defaulted \| Committed unconditionally revocable credit lines
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	108	46
UBS AG \| Lifetime expected credit losses \| Credit-impaired positions \| Rating category Defaulted \| Irrevocable committed prolongation of existing loans
Disclosure Of Off Balance Sheet Positions Subject To Expected Credit Loss By Rating Category [Line Items]
Exposure To Credit Risk On Loan Commitments And Financial Guarantee Contracts	$ 0	$ 4

Expected credit loss measure_17

Expected credit loss measurement - Sensitivity analysis (Narrative) (Detail)	12 Months Ended
	Dec. 31, 2020
ECL Measurement Sensitivity Analysis [Line Items]
Period used for economic forecast	3 years
Description Of Basis Of Inputs And Assumptions And Estimation Techniques Used To Measure 12 month And Lifetime Expected Credit Losses	The models applied to determine point-in-time PDs and LGDs rely on market and statistical data, which has been found to correlate well with historically observed defaults in sufficiently homogeneous segments.
Description Of How Forward-looking Information Has Been Incorporated Into Determination Of Expected Credit Losses	Depending on the scenario selection and related macro-economic assumptions for the risk factors, the components of the relevant weighted average ECL change. This is particularly relevant for interest rates, which can move in both directions under a given growth assumption (for example, low growth with high interest rates in a stagflation scenario, versus low growth and falling interest rates in a recession). Management generally look for scenario narratives that reflect the key risk drivers of a given credit portfolio.
UBS AG
ECL Measurement Sensitivity Analysis [Line Items]
Period used for economic forecast	3 years
Description Of Basis Of Inputs And Assumptions And Estimation Techniques Used To Measure 12 month And Lifetime Expected Credit Losses	The models applied to determine point-in-time PDs and LGDs rely on market and statistical data, which has been found to correlate well with historically observed defaults in sufficiently homogeneous segments.
Description Of How Forward-looking Information Has Been Incorporated Into Determination Of Expected Credit Losses	Depending on the scenario selection and related macro-economic assumptions for the risk factors, the components of the relevant weighted average ECL change. This is particularly relevant for interest rates, which can move in both directions under a given growth assumption (for example, low growth with high interest rates in a stagflation scenario, versus low growth and falling interest rates in a recession). Management generally look for scenario narratives that reflect the key risk drivers of a given credit portfolio.

Expected credit loss measure_18

Expected credit loss measurement - Sensitivity analysis (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Baseline ECL scenario \| Fixed income: 10-year government bonds (relative change) \| Minus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	$ (1,360)
Baseline ECL scenario \| Fixed income: 10-year government bonds (relative change) \| Plus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	2,100
Baseline ECL scenario \| Fixed income: 10-year government bonds (relative change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	5,690
Baseline ECL scenario \| Unemployment rate (absolute change) \| Minus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(7,400)
Baseline ECL scenario \| Unemployment rate (absolute change) \| Minus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(3,780)
Baseline ECL scenario \| Unemployment rate (absolute change) \| Plus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	4,150
Baseline ECL scenario \| Unemployment rate (absolute change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	8,500
Baseline ECL scenario \| Real GDP growth (relative change) \| Minus 2.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	3,720
Baseline ECL scenario \| Real GDP growth (relative change) \| Minus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	1,860
Baseline ECL scenario \| Real GDP growth (relative change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(1,460)
Baseline ECL scenario \| Real GDP growth (relative change) \| Plus 2.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(2,970)
Baseline ECL scenario \| House Price Index (relative change) \| Minus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	8,040
Baseline ECL scenario \| House Price Index (relative change) \| Minus 2.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	3,450
Baseline ECL scenario \| House Price Index (relative change) \| Plus 2.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(2,790)
Baseline ECL scenario \| House Price Index (relative change) \| Plus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(5,160)
Baseline ECL scenario \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Minus 10.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	3,940
Baseline ECL scenario \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Minus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	1,910
Baseline ECL scenario \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Plus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(8,300)
Baseline ECL scenario \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Plus 10.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(10,140)
Severe downside ECL scenario \| Fixed income: 10-year government bonds (relative change) \| Minus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(1,840)
Severe downside ECL scenario \| Fixed income: 10-year government bonds (relative change) \| Plus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	3,190
Severe downside ECL scenario \| Fixed income: 10-year government bonds (relative change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	6,860
Severe downside ECL scenario \| Unemployment rate (absolute change) \| Minus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(63,010)
Severe downside ECL scenario \| Unemployment rate (absolute change) \| Minus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(33,540)
Severe downside ECL scenario \| Unemployment rate (absolute change) \| Plus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	36,970
Severe downside ECL scenario \| Unemployment rate (absolute change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	75,930
Severe downside ECL scenario \| Real GDP growth (relative change) \| Minus 2.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	16,140
Severe downside ECL scenario \| Real GDP growth (relative change) \| Minus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	9,840
Severe downside ECL scenario \| Real GDP growth (relative change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(3,300)
Severe downside ECL scenario \| Real GDP growth (relative change) \| Plus 2.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(9,440)
Severe downside ECL scenario \| House Price Index (relative change) \| Minus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	144,340
Severe downside ECL scenario \| House Price Index (relative change) \| Minus 2.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	65,800
Severe downside ECL scenario \| House Price Index (relative change) \| Plus 2.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(56,600)
Severe downside ECL scenario \| House Price Index (relative change) \| Plus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(105,610)
Severe downside ECL scenario \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Minus 10.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	9,660
Severe downside ECL scenario \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Minus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	4,290
Severe downside ECL scenario \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Plus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(4,230)
Severe downside ECL scenario \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Plus 10.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(8,580)
Weighted average \| Fixed income: 10-year government bonds (relative change) \| Minus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(1,930)
Weighted average \| Fixed income: 10-year government bonds (relative change) \| Plus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	3,230
Weighted average \| Fixed income: 10-year government bonds (relative change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	7,190
Weighted average \| Unemployment rate (absolute change) \| Minus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(27,830)
Weighted average \| Unemployment rate (absolute change) \| Minus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(15,670)
Weighted average \| Unemployment rate (absolute change) \| Plus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	16,990
Weighted average \| Unemployment rate (absolute change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	33,740
Weighted average \| Real GDP growth (relative change) \| Minus 2.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	9,100
Weighted average \| Real GDP growth (relative change) \| Minus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	5,090
Weighted average \| Real GDP growth (relative change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(2,360)
Weighted average \| Real GDP growth (relative change) \| Plus 2.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(5,930)
Weighted average \| House Price Index (relative change) \| Minus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	51,460
Weighted average \| House Price Index (relative change) \| Minus 2.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	23,280
Weighted average \| House Price Index (relative change) \| Plus 2.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(19,090)
Weighted average \| House Price Index (relative change) \| Plus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(35,290)
Weighted average \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Minus 10.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	6,780
Weighted average \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Minus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	3,340
Weighted average \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Plus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(7,270)
Weighted average \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Plus 10.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(10,220)
UBS AG \| Baseline ECL scenario \| Fixed income: 10-year government bonds (relative change) \| Minus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(1,360)
UBS AG \| Baseline ECL scenario \| Fixed income: 10-year government bonds (relative change) \| Plus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	2,100
UBS AG \| Baseline ECL scenario \| Fixed income: 10-year government bonds (relative change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	5,690
UBS AG \| Baseline ECL scenario \| Unemployment rate (absolute change) \| Minus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(7,400)
UBS AG \| Baseline ECL scenario \| Unemployment rate (absolute change) \| Minus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(3,780)
UBS AG \| Baseline ECL scenario \| Unemployment rate (absolute change) \| Plus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	4,150
UBS AG \| Baseline ECL scenario \| Unemployment rate (absolute change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	8,500
UBS AG \| Baseline ECL scenario \| Real GDP growth (relative change) \| Minus 2.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	3,720
UBS AG \| Baseline ECL scenario \| Real GDP growth (relative change) \| Minus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	1,860
UBS AG \| Baseline ECL scenario \| Real GDP growth (relative change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(1,460)
UBS AG \| Baseline ECL scenario \| Real GDP growth (relative change) \| Plus 2.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(2,970)
UBS AG \| Baseline ECL scenario \| House Price Index (relative change) \| Minus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	8,040
UBS AG \| Baseline ECL scenario \| House Price Index (relative change) \| Minus 2.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	3,450
UBS AG \| Baseline ECL scenario \| House Price Index (relative change) \| Plus 2.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(2,790)
UBS AG \| Baseline ECL scenario \| House Price Index (relative change) \| Plus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(5,160)
UBS AG \| Baseline ECL scenario \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Minus 10.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	3,940
UBS AG \| Baseline ECL scenario \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Minus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	1,910
UBS AG \| Baseline ECL scenario \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Plus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(8,300)
UBS AG \| Baseline ECL scenario \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Plus 10.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(10,140)
UBS AG \| Severe downside ECL scenario \| Fixed income: 10-year government bonds (relative change) \| Minus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(1,840)
UBS AG \| Severe downside ECL scenario \| Fixed income: 10-year government bonds (relative change) \| Plus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	3,190
UBS AG \| Severe downside ECL scenario \| Fixed income: 10-year government bonds (relative change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	6,860
UBS AG \| Severe downside ECL scenario \| Unemployment rate (absolute change) \| Minus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(63,010)
UBS AG \| Severe downside ECL scenario \| Unemployment rate (absolute change) \| Minus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(33,540)
UBS AG \| Severe downside ECL scenario \| Unemployment rate (absolute change) \| Plus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	36,970
UBS AG \| Severe downside ECL scenario \| Unemployment rate (absolute change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	75,930
UBS AG \| Severe downside ECL scenario \| Real GDP growth (relative change) \| Minus 2.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	16,140
UBS AG \| Severe downside ECL scenario \| Real GDP growth (relative change) \| Minus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	9,840
UBS AG \| Severe downside ECL scenario \| Real GDP growth (relative change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(3,300)
UBS AG \| Severe downside ECL scenario \| Real GDP growth (relative change) \| Plus 2.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(9,440)
UBS AG \| Severe downside ECL scenario \| House Price Index (relative change) \| Minus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	144,340
UBS AG \| Severe downside ECL scenario \| House Price Index (relative change) \| Minus 2.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	65,800
UBS AG \| Severe downside ECL scenario \| House Price Index (relative change) \| Plus 2.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(56,600)
UBS AG \| Severe downside ECL scenario \| House Price Index (relative change) \| Plus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(105,610)
UBS AG \| Severe downside ECL scenario \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Minus 10.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	9,660
UBS AG \| Severe downside ECL scenario \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Minus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	4,290
UBS AG \| Severe downside ECL scenario \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Plus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(4,230)
UBS AG \| Severe downside ECL scenario \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Plus 10.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(8,580)
UBS AG \| Weighted average \| Fixed income: 10-year government bonds (relative change) \| Minus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(1,930)
UBS AG \| Weighted average \| Fixed income: 10-year government bonds (relative change) \| Plus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	3,230
UBS AG \| Weighted average \| Fixed income: 10-year government bonds (relative change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	7,190
UBS AG \| Weighted average \| Unemployment rate (absolute change) \| Minus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(27,830)
UBS AG \| Weighted average \| Unemployment rate (absolute change) \| Minus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(15,670)
UBS AG \| Weighted average \| Unemployment rate (absolute change) \| Plus 0.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	16,990
UBS AG \| Weighted average \| Unemployment rate (absolute change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	33,740
UBS AG \| Weighted average \| Real GDP growth (relative change) \| Minus 2.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	9,100
UBS AG \| Weighted average \| Real GDP growth (relative change) \| Minus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	5,090
UBS AG \| Weighted average \| Real GDP growth (relative change) \| Plus 1.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(2,360)
UBS AG \| Weighted average \| Real GDP growth (relative change) \| Plus 2.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(5,930)
UBS AG \| Weighted average \| House Price Index (relative change) \| Minus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	51,460
UBS AG \| Weighted average \| House Price Index (relative change) \| Minus 2.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	23,280
UBS AG \| Weighted average \| House Price Index (relative change) \| Plus 2.50 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(19,090)
UBS AG \| Weighted average \| House Price Index (relative change) \| Plus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(35,290)
UBS AG \| Weighted average \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Minus 10.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	6,780
UBS AG \| Weighted average \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Minus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	3,340
UBS AG \| Weighted average \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Plus 5.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	(7,270)
UBS AG \| Weighted average \| Equity (S&P500, EuroStoxx, SMI) (relative change) \| Plus 10.00 percent
Disclosure Of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast financial effect	$ (10,220)

Expected credit loss measure_19

Expected credit loss measurement - Scenario weights (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (1,468)	$ (1,029)	$ (1,054)
Weighted average
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (639)	$ 341
ECL with adjusted probabilities of scenario weights in percent of baseline	145.00%	149.00%
Weighted average \| Private clients with mortgages
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (131)
ECL with adjusted probabilities of scenario weights in percent of baseline	244.00%
Weighted average \| Real estate financing
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (76)
ECL with adjusted probabilities of scenario weights in percent of baseline	138.00%
Weighted average \| Large corporate clients
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (206)
ECL with adjusted probabilities of scenario weights in percent of baseline	149.00%
Weighted average \| SME clients
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (74)
ECL with adjusted probabilities of scenario weights in percent of baseline	115.00%
Weighted average \| Other segments
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (152)
ECL with adjusted probabilities of scenario weights in percent of baseline	116.00%
Baseline ECL scenario
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (442)	$ 234
ECL with adjusted probabilities of scenario weights in percent of baseline	100.00%
Baseline ECL scenario \| Private clients with mortgages
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (54)
ECL with adjusted probabilities of scenario weights in percent of baseline	100.00%
Baseline ECL scenario \| Real estate financing
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (55)
ECL with adjusted probabilities of scenario weights in percent of baseline	100.00%
Baseline ECL scenario \| Large corporate clients
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (138)
ECL with adjusted probabilities of scenario weights in percent of baseline	100.00%
Baseline ECL scenario \| SME clients
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (64)
ECL with adjusted probabilities of scenario weights in percent of baseline	100.00%
Baseline ECL scenario \| Other segments
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (131)
ECL with adjusted probabilities of scenario weights in percent of baseline	100.00%
Severe downside ECL scenario
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (999)
ECL with adjusted probabilities of scenario weights in percent of baseline	226.00%
Severe downside ECL scenario \| Private clients with mortgages
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (302)
ECL with adjusted probabilities of scenario weights in percent of baseline	562.00%
Severe downside ECL scenario \| Real estate financing
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (123)
ECL with adjusted probabilities of scenario weights in percent of baseline	224.00%
Severe downside ECL scenario \| Large corporate clients
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (298)
ECL with adjusted probabilities of scenario weights in percent of baseline	216.00%
Severe downside ECL scenario \| SME clients
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (93)
ECL with adjusted probabilities of scenario weights in percent of baseline	144.00%
Severe downside ECL scenario \| Other segments
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (183)
ECL with adjusted probabilities of scenario weights in percent of baseline	140.00%
Lifetime weighted average
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (1,336)
ECL with adjusted probabilities of scenario weights in percent of baseline	302.00%
Lifetime weighted average \| Private clients with mortgages
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (385)
ECL with adjusted probabilities of scenario weights in percent of baseline	717.00%
Lifetime weighted average \| Real estate financing
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (131)
ECL with adjusted probabilities of scenario weights in percent of baseline	237.00%
Lifetime weighted average \| Large corporate clients
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (307)
ECL with adjusted probabilities of scenario weights in percent of baseline	222.00%
Lifetime weighted average \| SME clients
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (129)
ECL with adjusted probabilities of scenario weights in percent of baseline	200.00%
Lifetime weighted average \| Other segments
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (385)
ECL with adjusted probabilities of scenario weights in percent of baseline	294.00%
UBS AG
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (1,468)	(1,029)
UBS AG \| Weighted average
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (639)	$ 341
ECL with adjusted probabilities of scenario weights in percent of baseline	145.00%	149.00%
UBS AG \| Weighted average \| Private clients with mortgages
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (131)
ECL with adjusted probabilities of scenario weights in percent of baseline	244.00%
UBS AG \| Weighted average \| Real estate financing
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (76)
ECL with adjusted probabilities of scenario weights in percent of baseline	138.00%
UBS AG \| Weighted average \| Large corporate clients
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (206)
ECL with adjusted probabilities of scenario weights in percent of baseline	149.00%
UBS AG \| Weighted average \| SME clients
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (74)
ECL with adjusted probabilities of scenario weights in percent of baseline	115.00%
UBS AG \| Weighted average \| Other segments
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (152)
ECL with adjusted probabilities of scenario weights in percent of baseline	116.00%
UBS AG \| Baseline ECL scenario
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (442)	$ 234
ECL with adjusted probabilities of scenario weights in percent of baseline	100.00%
UBS AG \| Baseline ECL scenario \| Private clients with mortgages
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (54)
ECL with adjusted probabilities of scenario weights in percent of baseline	100.00%
UBS AG \| Baseline ECL scenario \| Real estate financing
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (55)
ECL with adjusted probabilities of scenario weights in percent of baseline	100.00%
UBS AG \| Baseline ECL scenario \| Large corporate clients
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (138)
ECL with adjusted probabilities of scenario weights in percent of baseline	100.00%
UBS AG \| Baseline ECL scenario \| SME clients
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (64)
ECL with adjusted probabilities of scenario weights in percent of baseline	100.00%
UBS AG \| Baseline ECL scenario \| Other segments
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (131)
ECL with adjusted probabilities of scenario weights in percent of baseline	100.00%
UBS AG \| Severe downside ECL scenario
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (999)
ECL with adjusted probabilities of scenario weights in percent of baseline	226.00%
UBS AG \| Severe downside ECL scenario \| Private clients with mortgages
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (302)
ECL with adjusted probabilities of scenario weights in percent of baseline	562.00%
UBS AG \| Severe downside ECL scenario \| Real estate financing
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (123)
ECL with adjusted probabilities of scenario weights in percent of baseline	224.00%
UBS AG \| Severe downside ECL scenario \| Large corporate clients
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (298)
ECL with adjusted probabilities of scenario weights in percent of baseline	216.00%
UBS AG \| Severe downside ECL scenario \| SME clients
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (93)
ECL with adjusted probabilities of scenario weights in percent of baseline	144.00%
UBS AG \| Severe downside ECL scenario \| Other segments
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (183)
ECL with adjusted probabilities of scenario weights in percent of baseline	140.00%
UBS AG \| Lifetime weighted average
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (1,336)
ECL with adjusted probabilities of scenario weights in percent of baseline	302.00%
UBS AG \| Lifetime weighted average \| Private clients with mortgages
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (385)
ECL with adjusted probabilities of scenario weights in percent of baseline	717.00%
UBS AG \| Lifetime weighted average \| Real estate financing
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (131)
ECL with adjusted probabilities of scenario weights in percent of baseline	237.00%
UBS AG \| Lifetime weighted average \| Large corporate clients
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (307)
ECL with adjusted probabilities of scenario weights in percent of baseline	222.00%
UBS AG \| Lifetime weighted average \| SME clients
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (129)
ECL with adjusted probabilities of scenario weights in percent of baseline	200.00%
UBS AG \| Lifetime weighted average \| Other segments
ECL Measurement Sensitivity Analysis [Line Items]
Total ECL allowances and provisions	$ (385)
ECL with adjusted probabilities of scenario weights in percent of baseline	294.00%

FVM - Fair value hierarchy - As

FVM - Fair value hierarchy - Assets (Detail) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	$ 404,805	$ 362,448
Measured at fair value on a recurring basis \| Financial assets at fair value held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	125,397	127,514
Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	91,579	96,787
Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	11,245	11,464
Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	9,192	8,867
Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	9,961	7,914
Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2,995	1,971
Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	425	512
Measured at fair value on a recurring basis \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	159,617	121,841
Measured at fair value on a recurring basis \| Derivative financial instruments \| Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	68,749	52,474
Measured at fair value on a recurring basis \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	50,890	42,558
Measured at fair value on a recurring basis \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	34,842	22,825
Measured at fair value on a recurring basis \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2,358	2,007
Measured at fair value on a recurring basis \| Derivative financial instruments \| Commodity contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2,217	1,821
Measured at fair value on a recurring basis \| Brokerage receivables
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	24,659	18,007
Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	80,364	83,944
Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	631	559
Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	23,297	15,790
Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Securities financing transactions
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	6,751	6,294
Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,527	1,536
Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	831	740
Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Financial assets for unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	20,731	27,686
Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	17,619	19,385
Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	8,561	11,438
Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	418	515
Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	8,258	6,345
Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,150	1,875
Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	485	515
Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	6,624	3,955
Measured at fair value on a recurring basis \| Non-financial assets - Precious metals and other physical commodities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1]	6,264	4,597
Measured at fair value on a non-recurring basis \| Other non-financial assets
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1],[2]	246	199
Level 1
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	156,696	161,101
Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	107,507	113,634
Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	90,307	96,161
Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	9,028	9,630
Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	7,374	7,088
Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	789	755
Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	8	0
Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	795	356
Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	319	240
Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	6
Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	7
Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Commodity contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
Level 1 \| Measured at fair value on a recurring basis \| Brokerage receivables
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	40,986	40,608
Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	86	103
Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	19,704	12,089
Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Securities financing transactions
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	278	194
Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Financial assets for unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	20,628	27,568
Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	290	653
Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
Level 1 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,144	1,906
Level 1 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,103	1,859
Level 1 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	40	47
Level 1 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
Level 1 \| Measured at fair value on a recurring basis \| Non-financial assets - Precious metals and other physical commodities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1]	6,264	4,597
Level 1 \| Measured at fair value on a non-recurring basis \| Other non-financial assets
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1],[2]	0	0
Level 2
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	239,831	194,110
Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	15,553	12,068
Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,101	400
Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2,207	1,770
Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,794	1,729
Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	8,356	6,617
Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,860	1,180
Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	236	372
Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	157,068	120,222
Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	68,424	52,227
Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	50,353	42,288
Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	33,990	22,220
Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2,008	1,612
Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Commodity contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2,211	1,820
Level 2 \| Measured at fair value on a recurring basis \| Brokerage receivables
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	24,659	18,007
Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	35,435	39,373
Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	4
Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	3,593	3,700
Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Securities financing transactions
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	6,629	6,148
Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	447	448
Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Financial assets for unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	101	118
Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	16,957	18,732
Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	7,699	10,206
Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	10	16
Level 2 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	7,114	4,439
Level 2 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	47	16
Level 2 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	444	468
Level 2 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	6,624	3,955
Level 2 \| Measured at fair value on a recurring basis \| Non-financial assets - Precious metals and other physical commodities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1]	0	0
Level 2 \| Measured at fair value on a non-recurring basis \| Other non-financial assets
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1],[2]	1	0
Level 3
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	8,278	7,237
Level 3 \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[3]	700	700
Level 3 \| Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[4]	1,500	1,500
Level 3 \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[3]	100	100
Level 3 \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value		1,200	500
Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2,337	1,812
Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	171	226
Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	10	64
Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	23	50
Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	817	542
Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,134	791
Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	181	140
Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,754	1,264
Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	5	8
Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	537	263
Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	853	597
Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	350	394
Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Commodity contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	6	0
Level 3 \| Measured at fair value on a recurring basis \| Brokerage receivables
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	3,942	3,963
Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	544	452
Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Securities financing transactions
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	122	147
Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,527	1,536
Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	105	98
Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Financial assets for unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2	0
Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	372	0
Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	862	1,231
Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	408	499
Level 3 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
Level 3 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
Level 3 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
Level 3 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
Level 3 \| Measured at fair value on a recurring basis \| Non-financial assets - Precious metals and other physical commodities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1]	0	0
Level 3 \| Measured at fair value on a non-recurring basis \| Other non-financial assets
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1],[2]	245	199
UBS AG
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	404,576	362,322
UBS AG \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	125,492	127,695
UBS AG \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	91,599	96,788
UBS AG \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	11,245	11,464
UBS AG \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	9,192	7,088
UBS AG \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	10,038	755
UBS AG \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2,995	0
UBS AG \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	425	0
UBS AG \| Measured at fair value on a recurring basis \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	159,618	121,843
UBS AG \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	68,750	52,476
UBS AG \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	50,890	42,558
UBS AG \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	34,842	22,825
UBS AG \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2,358	2,007
UBS AG \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Commodity contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2,217	1,821
UBS AG \| Measured at fair value on a recurring basis \| Brokerage receivables
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	24,659	18,007
UBS AG \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	80,038	83,636
UBS AG \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	631	559
UBS AG \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	23,297	15,790
UBS AG \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Securities financing transactions
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	6,751	6,294
UBS AG \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,527	1,536
UBS AG \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	505	432
UBS AG \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Financial assets for unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	20,731	27,686
UBS AG \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	17,619	19,385
UBS AG \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	8,561	11,438
UBS AG \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	418	515
UBS AG \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	8,258	6,345
UBS AG \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,150	1,875
UBS AG \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	485	515
UBS AG \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	6,624	3,955
UBS AG \| Measured at fair value on a recurring basis \| Non-financial assets - Precious metals and other physical commodities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1]	6,264	4,597
UBS AG \| Measured at fair value on a non-recurring basis \| Other non-financial assets
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1],[2]	246	199
UBS AG \| Level 1
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	156,716	161,102
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	107,526	113,635
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	90,327	96,162
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	9,028	9,630
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	7,374	1,729
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	789	6,796
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	1,180
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	8	372
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	795	356
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	319	240
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	6
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	7
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Commodity contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Brokerage receivables
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	40,986	40,608
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	86	103
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	19,704	12,089
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Securities financing transactions
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	278	194
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Financial assets for unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	20,628	27,568
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	290	653
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,144	1,906
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,103	1,859
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	40	47
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Non-financial assets - Precious metals and other physical commodities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1]	6,264	4,597
UBS AG \| Level 1 \| Measured at fair value on a non-recurring basis \| Other non-financial assets
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1],[2]	0	0
UBS AG \| Level 2
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	239,583	193,983
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	15,630	12,248
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,101	400
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2,207	1,770
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,794	50
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	8,432	542
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,860	791
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	236	140
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	157,069	120,224
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	68,425	52,228
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	50,353	42,288
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	33,990	22,220
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2,008	1,612
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Commodity contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2,211	1,820
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Brokerage receivables
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	24,659	18,007
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	35,110	39,065
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	4
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	3,593	3,700
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Securities financing transactions
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	6,629	6,148
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	121	140
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Financial assets for unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	101	118
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	16,957	18,732
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	7,699	10,206
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	10	16
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	7,114	4,439
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	47	16
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	444	468
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	6,624	3,955
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Non-financial assets - Precious metals and other physical commodities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1]	0	0
UBS AG \| Level 2 \| Measured at fair value on a non-recurring basis \| Other non-financial assets
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1],[2]	1	0
UBS AG \| Level 3
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	8,278	7,237
UBS AG \| Level 3 \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[3]	700	700
UBS AG \| Level 3 \| Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[4]	1,500	1,500
UBS AG \| Level 3 \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[3]	100	100
UBS AG \| Level 3 \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value		1,200	500
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2,337	1,812
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	171	226
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	10	64
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	23	8,867
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	817	8,093
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,134	1,971
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value held for trading \| Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	181	512
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,754	1,264
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	5	8
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	537	263
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	853	597
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	350	394
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Commodity contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	6	0
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Brokerage receivables
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	3,942	3,962
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	544	451
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Securities financing transactions
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	122	147
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,527	1,536
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	105	98
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Financial assets for unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2	0
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	372	0
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	862	1,231
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets at fair value not held for trading \| Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	408	499
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial assets measured at fair value through other comprehensive income \| Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Non-financial assets - Precious metals and other physical commodities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1]	0	0
UBS AG \| Level 3 \| Measured at fair value on a non-recurring basis \| Other non-financial assets
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1],[2]	$ 245	$ 199

[1]	Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented
[2]	Other non-financial assets primarily consist of properties and other non-current assets held for sale, which are measured at the lower of their net carrying amount or fair value less costs to sell.
[3]	The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments.
[4]	Bond price equivalent prior to the fourth quarter of 2020; discounted cash flow model thereafter.

FVM - Fair value hierarchy - Li

FVM - Fair value hierarchy - Liabilities (Detail) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	$ 325,069	$ 291,452
Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	33,595	30,591
Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	4,678	3,466
Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	4,089	3,661
Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	1,828	698
Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	22,985	22,734
Measured at fair value on a recurring basis \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	161,102	120,880
Measured at fair value on a recurring basis \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	43,916	36,571
Measured at fair value on a recurring basis \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	2,931	2,960
Measured at fair value on a recurring basis \| Derivative financial instruments \| Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	70,527	54,013
Measured at fair value on a recurring basis \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	41,176	25,468
Measured at fair value on a recurring basis \| Derivative financial instruments \| Commodity contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	2,027	1,707
Measured at fair value on a recurring basis \| Brokerage payables designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	38,742	37,233
Measured at fair value on a recurring basis \| Debt issued designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	61,243	66,809
Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	30,387	35,940
Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Financial liabilities related to unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	20,975	28,145
Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Securities financing transactions
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	7,317	5,742
Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Over-the-counter debt instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	2,060	2,022
Level 1
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	27,635	26,176
Level 1 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	26,888	25,791
Level 1 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	3,642	2,820
Level 1 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	31	40
Level 1 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	696	404
Level 1 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	22,519	22,526
Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	746	385
Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	7
Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	316	248
Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	3
Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Commodity contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
Level 1 \| Measured at fair value on a recurring basis \| Brokerage payables designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
Level 1 \| Measured at fair value on a recurring basis \| Debt issued designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
Level 1 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
Level 1 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Financial liabilities related to unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
Level 1 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Securities financing transactions
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
Level 1 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Over-the-counter debt instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
Level 2
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	282,222	252,518
Level 2 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	6,652	4,726
Level 2 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	1,036	646
Level 2 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	4,048	3,606
Level 2 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	1,127	294
Level 2 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	425	149
Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	156,884	118,498
Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	43,389	36,434
Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	2,403	2,448
Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	70,149	53,705
Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	38,870	24,171
Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Commodity contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	2,003	1,707
Level 2 \| Measured at fair value on a recurring basis \| Brokerage payables designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	38,742	37,233
Level 2 \| Measured at fair value on a recurring basis \| Debt issued designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	50,273	56,943
Level 2 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	29,671	35,119
Level 2 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Financial liabilities related to unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	20,975	28,145
Level 2 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Securities financing transactions
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	7,317	5,742
Level 2 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Over-the-counter debt instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	1,363	1,231
Level 3
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	15,212	12,759
Level 3 \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value		0	0
Level 3 \| Investment fund units
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[2]	0	0
Level 3 \| Equity instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[2]	0	100
Level 3 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	55	75
Level 3 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
Level 3 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	9	16
Level 3 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	5	0
Level 3 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	40	59
Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	3,471	1,996
Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	527	130
Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	528	512
Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	61	60
Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	2,306	1,293
Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Commodity contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	24	0
Level 3 \| Measured at fair value on a recurring basis \| Brokerage payables designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
Level 3 \| Measured at fair value on a recurring basis \| Debt issued designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	10,970	9,866
Level 3 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	716	822
Level 3 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Financial liabilities related to unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
Level 3 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Securities financing transactions
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
Level 3 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Over-the-counter debt instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	697	791
UBS AG
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	325,080	291,452
UBS AG \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	33,595	30,591
UBS AG \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	4,678	3,466
UBS AG \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	4,089	3,661
UBS AG \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	1,828	698
UBS AG \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	22,985	22,734
UBS AG \| Measured at fair value on a recurring basis \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	161,102	120,880
UBS AG \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	43,916	36,571
UBS AG \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	2,931	2,960
UBS AG \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	70,527	54,013
UBS AG \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	41,176	25,468
UBS AG \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Commodity contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	2,027	1,707
UBS AG \| Measured at fair value on a recurring basis \| Brokerage payables designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	38,742	37,233
UBS AG \| Measured at fair value on a recurring basis \| Debt issued designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	59,868	66,592
UBS AG \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	31,773	36,157
UBS AG \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Financial liabilities related to unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	20,975	28,145
UBS AG \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Securities financing transactions
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	7,317	5,742
UBS AG \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Over-the-counter debt instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	2,060	2,022
UBS AG \| Level 1
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	27,635	26,176
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	26,889	25,791
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	3,642	2,820
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	31	40
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	696	404
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	22,519	22,526
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	746	385
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	7
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	316	248
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	3
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Commodity contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Brokerage payables designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Debt issued designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Financial liabilities related to unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Securities financing transactions
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
UBS AG \| Level 1 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Over-the-counter debt instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
UBS AG \| Level 2
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	282,233	252,518
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	6,652	4,726
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	1,036	646
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	4,048	3,606
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	1,127	294
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	425	149
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	156,884	118,498
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	43,389	36,434
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	2,403	2,448
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	70,149	53,705
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	38,870	24,171
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Commodity contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	2,003	1,707
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Brokerage payables designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	38,742	37,233
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Debt issued designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	50,273	56,943
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	29,682	35,119
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Financial liabilities related to unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	20,975	28,145
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Securities financing transactions
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	7,317	5,742
UBS AG \| Level 2 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Over-the-counter debt instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	1,363	1,231
UBS AG \| Level 3
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	15,212	12,759
UBS AG \| Level 3 \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value		0	0
UBS AG \| Level 3 \| Investment fund units
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[2]	0	0
UBS AG \| Level 3 \| Equity instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[2]	0	100
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	55	75
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Government bills / bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	9	16
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	5	0
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Financial liabilities at fair value held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	40	59
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	3,471	1,996
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	527	130
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	528	512
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	61	60
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	2,306	1,293
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Derivative financial instruments \| Commodity contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	24	0
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Brokerage payables designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Debt issued designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	9,595	9,649
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	2,091	1,039
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Financial liabilities related to unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Securities financing transactions
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	0	0
UBS AG \| Level 3 \| Measured at fair value on a recurring basis \| Other financial liabilities designated at fair value \| Over-the-counter debt instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial Liabilities At Fair Value	[1]	$ 697	$ 791

[1]	Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented
[2]	The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments.

FVM - Valuation adjustments_ De

FVM - Valuation adjustments: Deferred day-1 P&L (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Deferred Day-1 Profit Or Loss [Line Items]
Reserve balance at the beginning of the year	$ 146	$ 255	$ 338
Profit / (loss) deferred on new transactions	362	171	341
(Profit) / loss recognized in the income statement	(238)	(278)	(417)
Foreign currency translation	0	(2)	(6)
Reserve balance at the end of the year	269	146	255
UBS AG
Deferred Day-1 Profit Or Loss [Line Items]
Reserve balance at the beginning of the year	146	255	338
Profit / (loss) deferred on new transactions	362	171	341
(Profit) / loss recognized in the income statement	(238)	(278)	(417)
Foreign currency translation	0	(2)	(6)
Reserve balance at the end of the year	$ 269	$ 146	$ 255

FVM - Valuation adjustments_ Ow

FVM - Valuation adjustments: Own credit adjustments on financial liabilities designated at fair value (Detail) - Included in Other comprehensive income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Recognized during the year:
Realized gain / (loss)	$ 2	$ 8	$ (3)
Unrealized gain / (loss)	(295)	(408)	519
Total gain / (loss), before tax	(293)	(400)	517
Recognized on the balance sheet as of the end of the year:
Unrealized life-to-date gain / (loss)	(381)	(88)	320
UBS AG
Recognized during the year:
Realized gain / (loss)	2	8	(3)
Unrealized gain / (loss)	(295)	(408)	519
Total gain / (loss), before tax	(293)	(400)	517
Recognized on the balance sheet as of the end of the year:
Unrealized life-to-date gain / (loss)	$ (381)	$ (88)	$ 320

FVM - Valuation adjustments_ Va

FVM - Valuation adjustments: Valuation adjustments on financial instruments (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Valuation Adjustments On Financial Instruments [Line Items]
Credit valuation adjustments	[1]	$ (66)	$ (48)
Funding valuation adjustments	[2]	(73)	(93)
Debit valuation adjustments		0	1
Other valuation adjustments		(820)	(566)
of which: liquidity		(340)	(300)
of which: model uncertainty		(479)	(266)
Funding valuation adjustments on structured financing transactions		6	43
UBS AG
Valuation Adjustments On Financial Instruments [Line Items]
Credit valuation adjustments	[1]	(66)	(48)
Funding valuation adjustments	[2]	(73)	(93)
Debit valuation adjustments		0	1
Other valuation adjustments		(820)	(566)
of which: liquidity		(340)	(300)
of which: model uncertainty		(479)	(266)
Funding valuation adjustments on structured financing transactions		$ 6	$ 43

[1]	Amounts do not include reserves against defaulted counterparties
[2]	Includes FVAs on structured financing transactions of USD 6 million as of 31 December 2020 and USD 43 million as of 31 December 2019.

FVM - Transfers between Level 1

FVM - Transfers between Level 1 and Level 2 (Narrative) (Detail)	12 Months Ended
	Dec. 31, 2020
Disclosure Of Fair Value Measurement [Line Items]
Statement that there were no transfers between Level 1 and Level 2 of fair value hierarchy, assets	Assets and liabilities transferred from Level 2 to Level 1 during 2020 were not material. Assets and liabilities transferred from Level 1 to Level 2 during 2020 were also not material.
Statement that there were no transfers between Level 1 and Level 2 of fair value hierarchy, liabilities	Assets and liabilities transferred from Level 2 to Level 1 during 2020 were not material. Assets and liabilities transferred from Level 1 to Level 2 during 2020 were also not material.
UBS AG
Disclosure Of Fair Value Measurement [Line Items]
Statement that there were no transfers between Level 1 and Level 2 of fair value hierarchy, assets	Assets and liabilities transferred from Level 2 to Level 1 during 2020 were not material. Assets and liabilities transferred from Level 1 to Level 2 during 2020 were also not material.
Statement that there were no transfers between Level 1 and Level 2 of fair value hierarchy, liabilities	Assets and liabilities transferred from Level 2 to Level 1 during 2020 were not material. Assets and liabilities transferred from Level 1 to Level 2 during 2020 were also not material.

FVM - Level 3 instruments_ Valu

FVM - Level 3 instruments: Valuation techniques and inputs (Detail) $ in Millions		Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value	[1]	$ 404,805	$ 362,448
Financial liabilities measured at fair value	[1]	325,069	291,452
Debt issued designated at fair value
Disclosure Of Fair Value Measurement [Line Items]
Financial liabilities measured at fair value		11,000	9,900
Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement [Line Items]
Financial liabilities measured at fair value		700	800
Level 3
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value	[1]	8,278	7,237
Financial liabilities measured at fair value	[1]	15,212	12,759
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Corporate and municipal bonds
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value		1,200	500
Financial liabilities measured at fair value		0	0
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Corporate and municipal bonds \| Relative value to market comparable \| Bond price equivalent (% of par)
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value		1,200	500
Financial liabilities measured at fair value		$ 0	$ 0
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Corporate and municipal bonds \| Relative value to market comparable \| Bond price equivalent (% of par) \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.01	0
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Corporate and municipal bonds \| Relative value to market comparable \| Bond price equivalent (% of par) \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	1.43	1.43
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Corporate and municipal bonds \| Relative value to market comparable \| Bond price equivalent (% of par) \| Weighted average
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[3]	1	1.01
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Corporate and municipal bonds \| Discounted expected cash flows \| Discount margin \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)		0.0268
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Corporate and municipal bonds \| Discounted expected cash flows \| Discount margin \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)		0.0268
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value		$ 2,400	$ 2,400
Financial liabilities measured at fair value		$ 0	$ 0
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees \| Relative value to market comparable \| Loan price equivalent (% of par) \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0	0
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees \| Relative value to market comparable \| Loan price equivalent (% of par) \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	1.01	1.01
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees \| Relative value to market comparable \| Loan price equivalent (% of par) \| Weighted average
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[3]	0.99	0.99
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees \| Discounted expected cash flows \| Credit spread \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.019	0.0225
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees \| Discounted expected cash flows \| Credit spread \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.08	0.053
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees \| Market comparable and securitization model \| Credit spread \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.004	0.0045
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees \| Market comparable and securitization model \| Credit spread \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.1858	0.1412
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees \| Market comparable and securitization model \| Credit spread \| Weighted average
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[3]	0.0333	0.0244
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value	[4]	$ 1,500	$ 1,500
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities \| Relative value to market comparable \| Bond price equivalent (% of par) \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[4]		0.79
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities \| Relative value to market comparable \| Bond price equivalent (% of par) \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[4]		0.98
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities \| Relative value to market comparable \| Bond price equivalent (% of par) \| Weighted average
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[3],[4]		0.88
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities \| Discounted expected cash flows \| Credit spread \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[4]	0.01
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities \| Discounted expected cash flows \| Credit spread \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[4]	0.0188
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities \| Discounted expected cash flows \| Credit spread \| Weighted average
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[3],[4]	0.014
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Investment fund units
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value	[5]	$ 100	$ 100
Financial liabilities measured at fair value	[5]	0	0
Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Equity instruments
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value	[5]	700	700
Financial liabilities measured at fair value	[5]	0	100
Level 3 \| Debt issued designated at fair value
Disclosure Of Fair Value Measurement [Line Items]
Financial liabilities measured at fair value	[6]	11,000	9,900
Level 3 \| Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement [Line Items]
Financial liabilities measured at fair value		$ 700	$ 800
Level 3 \| Other financial liabilities designated at fair value \| Discounted expected cash flows \| Funding spread \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0042	0.0044
Level 3 \| Other financial liabilities designated at fair value \| Discounted expected cash flows \| Funding spread \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0175	0.0175
Level 3 \| Derivative financial instruments: Interest rate contracts
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value		$ 500	$ 300
Financial liabilities measured at fair value		$ 500	$ 100
Level 3 \| Derivative financial instruments: Interest rate contracts \| Option model \| Volatility of interest rates \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0029	0.0015
Level 3 \| Derivative financial instruments: Interest rate contracts \| Option model \| Volatility of interest rates \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0069	0.0063
Level 3 \| Derivative financial instruments: Credit derivative contracts
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value		$ 300	$ 400
Financial liabilities measured at fair value		$ 500	$ 500
Level 3 \| Derivative financial instruments: Credit derivative contracts \| Discounted expected cash flows \| Bond price equivalent (% of par) \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0	0
Level 3 \| Derivative financial instruments: Credit derivative contracts \| Discounted expected cash flows \| Bond price equivalent (% of par) \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	1	1
Level 3 \| Derivative financial instruments: Credit derivative contracts \| Discounted expected cash flows \| Credit spread \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0001	0.0001
Level 3 \| Derivative financial instruments: Credit derivative contracts \| Discounted expected cash flows \| Credit spread \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0489	0.07
Level 3 \| Derivative financial instruments: Equity / index contracts
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value		$ 900	$ 600
Financial liabilities measured at fair value		$ 2,300	$ 1,300
Level 3 \| Derivative financial instruments: Equity / index contracts \| Option model \| Equity dividend yields \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0	0
Level 3 \| Derivative financial instruments: Equity / index contracts \| Option model \| Equity dividend yields \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.13	0.14
Level 3 \| Derivative financial instruments: Equity / index contracts \| Option model \| Volatility of equity stocks, equity and other indices \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.04	0.04
Level 3 \| Derivative financial instruments: Equity / index contracts \| Option model \| Volatility of equity stocks, equity and other indices \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	1	1.05
Level 3 \| Derivative financial instruments: Equity / index contracts \| Option model \| Equity-to-FX correlation \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	(0.34)	(0.45)
Level 3 \| Derivative financial instruments: Equity / index contracts \| Option model \| Equity-to-FX correlation \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.65	0.71
Level 3 \| Derivative financial instruments: Equity / index contracts \| Option model \| Equity-to-equity correlation \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	(0.16)	(0.17)
Level 3 \| Derivative financial instruments: Equity / index contracts \| Option model \| Equity-to-equity correlation \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	1	0.98
UBS AG
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value	[1]	$ 404,576	$ 362,322
Financial liabilities measured at fair value	[1]	325,080	291,452
UBS AG \| Debt issued designated at fair value
Disclosure Of Fair Value Measurement [Line Items]
Financial liabilities measured at fair value			9,900
UBS AG \| Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement [Line Items]
Financial liabilities measured at fair value			800
UBS AG \| Level 3
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value	[1]	8,278	7,237
Financial liabilities measured at fair value	[1]	15,212	12,759
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Corporate and municipal bonds
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value		1,200	500
Financial liabilities measured at fair value		$ 0	$ 0
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Corporate and municipal bonds \| Relative value to market comparable \| Bond price equivalent (% of par) \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.01	0
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Corporate and municipal bonds \| Relative value to market comparable \| Bond price equivalent (% of par) \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	1.43	1.43
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Corporate and municipal bonds \| Relative value to market comparable \| Bond price equivalent (% of par) \| Weighted average
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[3]	1	1.01
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Corporate and municipal bonds \| Discounted expected cash flows \| Discount margin \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0268
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Corporate and municipal bonds \| Discounted expected cash flows \| Discount margin \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0268
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value		$ 2,400	$ 2,400
Financial liabilities measured at fair value		$ 0	$ 0
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees \| Relative value to market comparable \| Loan price equivalent (% of par) \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0	0
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees \| Relative value to market comparable \| Loan price equivalent (% of par) \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	1.01	1.01
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees \| Relative value to market comparable \| Loan price equivalent (% of par) \| Weighted average
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[3]	0.99	0.99
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees \| Discounted expected cash flows \| Credit spread \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.019	0.0225
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees \| Discounted expected cash flows \| Credit spread \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.08	0.053
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees \| Market comparable and securitization model \| Credit spread \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.004	0.0045
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees \| Market comparable and securitization model \| Credit spread \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.1858	0.1412
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees \| Market comparable and securitization model \| Credit spread \| Weighted average
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[3]	0.0333	0.0244
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value	[4]	$ 1,500	$ 1,500
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities \| Relative value to market comparable \| Bond price equivalent (% of par) \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]		0.79
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities \| Relative value to market comparable \| Bond price equivalent (% of par) \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]		0.98
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities \| Relative value to market comparable \| Bond price equivalent (% of par) \| Weighted average
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[3]		0.88
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities \| Discounted expected cash flows \| Credit spread \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.01
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities \| Discounted expected cash flows \| Credit spread \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0188
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities \| Discounted expected cash flows \| Credit spread \| Weighted average
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[3]	0.014
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Investment fund units
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value	[5]	$ 100	$ 100
Financial liabilities measured at fair value	[5]	0	0
UBS AG \| Level 3 \| Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Equity instruments
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value	[5]	700	700
Financial liabilities measured at fair value	[5]	0	100
UBS AG \| Level 3 \| Debt issued designated at fair value
Disclosure Of Fair Value Measurement [Line Items]
Financial liabilities measured at fair value	[6]	9,600	9,600
UBS AG \| Level 3 \| Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement [Line Items]
Financial liabilities measured at fair value		$ 2,100	$ 1,000
UBS AG \| Level 3 \| Other financial liabilities designated at fair value \| Discounted expected cash flows \| Funding spread \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0042	0.0044
UBS AG \| Level 3 \| Other financial liabilities designated at fair value \| Discounted expected cash flows \| Funding spread \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0175	0.0175
UBS AG \| Level 3 \| Derivative financial instruments: Interest rate contracts
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value		$ 500	$ 300
Financial liabilities measured at fair value		$ 500	$ 100
UBS AG \| Level 3 \| Derivative financial instruments: Interest rate contracts \| Option model \| Volatility of interest rates \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0029	0.0015
UBS AG \| Level 3 \| Derivative financial instruments: Interest rate contracts \| Option model \| Volatility of interest rates \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0069	0.0063
UBS AG \| Level 3 \| Derivative financial instruments: Credit derivative contracts
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value		$ 300	$ 400
Financial liabilities measured at fair value		$ 500	$ 500
UBS AG \| Level 3 \| Derivative financial instruments: Credit derivative contracts \| Discounted expected cash flows \| Bond price equivalent (% of par) \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0	0
UBS AG \| Level 3 \| Derivative financial instruments: Credit derivative contracts \| Discounted expected cash flows \| Bond price equivalent (% of par) \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	1	1
UBS AG \| Level 3 \| Derivative financial instruments: Credit derivative contracts \| Discounted expected cash flows \| Credit spread \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0001	0.0001
UBS AG \| Level 3 \| Derivative financial instruments: Credit derivative contracts \| Discounted expected cash flows \| Credit spread \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0489	0.07
UBS AG \| Level 3 \| Derivative financial instruments: Equity / index contracts
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value		$ 900	$ 600
Financial liabilities measured at fair value		$ 2,300	$ 1,300
UBS AG \| Level 3 \| Derivative financial instruments: Equity / index contracts \| Option model \| Equity dividend yields \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0	0
UBS AG \| Level 3 \| Derivative financial instruments: Equity / index contracts \| Option model \| Equity dividend yields \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.13	0.14
UBS AG \| Level 3 \| Derivative financial instruments: Equity / index contracts \| Option model \| Volatility of equity stocks, equity and other indices \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.04	0.04
UBS AG \| Level 3 \| Derivative financial instruments: Equity / index contracts \| Option model \| Volatility of equity stocks, equity and other indices \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	1	1.05
UBS AG \| Level 3 \| Derivative financial instruments: Equity / index contracts \| Option model \| Equity-to-FX correlation \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	(0.34)	(0.45)
UBS AG \| Level 3 \| Derivative financial instruments: Equity / index contracts \| Option model \| Equity-to-FX correlation \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.65	0.71
UBS AG \| Level 3 \| Derivative financial instruments: Equity / index contracts \| Option model \| Equity-to-equity correlation \| Low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	(0.16)	(0.17)
UBS AG \| Level 3 \| Derivative financial instruments: Equity / index contracts \| Option model \| Equity-to-equity correlation \| High
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	1	0.98

[1]	Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented
[2]	The ranges of significant unobservable inputs are represented in points, percentages and basis points. Points are a percentage of par (e.g., 100 points would be 100% of par)
[3]	Weighted averages are provided for non-derivative financial instruments and were calculated by weighting inputs based on the fair values of the respective instruments. Weighted averages are not provided for inputs related to derivative contracts, as this would not be meaningful.
[4]	Bond price equivalent prior to the fourth quarter of 2020; discounted cash flow model thereafter.
[5]	The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments.
[6]	Debt issued designated at fair value is composed primarily of UBS structured notes, which include variable maturity notes with various equity and foreign exchange underlying risks, rates-linked and credit-linked notes, all of which have embedded derivative parameters that are considered to be unobservable. The equivalent derivative instrument parameters are presented in the respective derivative financial instruments lines in this table.

FVM - Level 3 instruments_ Va_2

FVM - Level 3 instruments: Valuation techniques and inputs (Narrative) (Detail)	12 Months Ended
	Dec. 31, 2020
Disclosure Of Significant Unobservable Inputs Used In Fair Value Measurement [Line Items]
Disclosure of significant unobservable inputs used in fair value measurement [Text Block]	Significant unobservable inputs in Level 3 positions This section discusses the significant unobservable inputs used in the valuation of Level 3 instruments and assesses the potential effect that a change in each unobservable input in isolation may have on a fair value measurement . Relationships between observable and unobservable inputs have not been included in the summary below. Input Description Bond price equivalent – Where market prices are not available for a bond, fair value is measured by comparison with observable pricing data from similar instruments. Factors considered when selecting comparable instruments include credit quality, maturity and industry of the issuer. Fair value may be measured either by a direct price comparison or by conversion of an instrument price int o a yield (either as an outright yield or as a spread to LIBOR). – For corporate and municipal bonds, the range represents the range of prices from reference issuances used in determining fair value. Bonds priced at 0 are distressed to the point that no recovery is expected, while prices significantly in excess of 100 or par relate to inflation-linked or structured issuances that pay a coupon in excess of the market benchmark as of the measurement date. – For credit derivatives, the bond price range represents the range of prices used for reference instruments, which are typ ically converted to an equivalent yield or credit spread as part of the valuation process. Loan price equivalent – Where market prices are not available for a traded loan, fair value is measured by comparison with observable pricing data for similar instruments. Factors considered when selecting comparable instruments include industry segment, collateral quality, maturity and issuer-specific covenants. Fair value may be measured either by a direct price comparison or by conversion of an instrument pri ce into a yield. The range represents the range of prices derived from reference issuances of a similar credit quality used to measure fair value for loans classified as Level 3. Loans priced at 0 are distressed to the point that no recovery is expected, w hile a current price of 100 represents a loan that is expected to be repaid in full. Credit spread – Valuation models for many credit derivatives require an input for the credit spread, which is a reflection of the credit quality of the associated reference d underlying. The credit spread of a particular security is quoted in relation to the yield on a benchmark security or reference rate, typically either US Treasury or LIBOR, and is generally expressed in terms of basis points. An increase / (decrease) in c redit spread will increase / (decrease) the value of credit protection offered by credit default swap s and other credit derivative products. The income statement effect from such changes depends on the nature and direction of the positions held. Credit spr eads may be negative where the asset is more creditworthy than the benchmark against which the spread is calculated. A wider credit spread represents decreasing creditworthiness. The range represents a diverse set of underlyings, with the lower end of the range representing credits of the highest quality (e.g., approximating the risk of LIBOR) and the upper end of the range representing greater levels of credit risk. Discount margin – The discount margin (DM) spread represents the discount rates applied to present value cash flows of an asset to reflect the market return required for uncertainty in the estimated cash flows. DM spreads are a rate or rates applied on top of a floating index (e.g., LIBOR) to discount expected cash flows. Generally, a decrease / (increase) in the DM in isolation would result in a higher / (lower) fair value. – The high end of the range relates to securities that are priced low within the market relative to the expected cash flow schedule. This indicates that the market is pricing a n increased risk of credit loss into the security that is greater than what is being captured by the expected cash flow generation process. The low ends of the ranges are typical of funding rates on better-quality instruments. Funding spread – Structured fi nancing transactions are valued using synthetic funding curves that best represent the assets that are pledged as collateral for the transactions. They are not representative of where UBS can fund itself on an unsecured basis, but provide an estimate of wh ere UBS can source and deploy secured funding with counterparties for a given type of collateral. The funding spreads are expressed in terms of basis points over or under LIBOR, and if funding spreads widen, this increases the effect of discounting. – A sma ll proportion of structured debt instruments and non-structured fixed-rate bonds within financial liabilities designated at fair value had an exposure to funding spreads that was longer in duration than the actively traded market. Volatility – Volatility me asures the variability of future prices for a particular instrument and is generally expressed as a percentage, where a higher number reflects a more volatile instrument, for which future price movements are more likely to occur. Volatility is a key input into option models, where it is used to derive a probability-based distribution of future prices for the underlying instrument. The effect of volatility on individual positions within the portfolio is driven primarily by whether the option contract is a lo ng or short position. In most cases, the fair value of an option increases as a result of an increase in volatility and is reduced by a decrease in volatility. Generally, volatility used in the measurement of fair value is derived from active-market option prices (referred to as implied volatility). A key feature of implied volatility is the volatility “smile” or “skew”, which represents the effect of pricing options of different option strikes at different implied volatility levels. – Volatilities of low int erest rates tend to be much higher than volatilities of high interest rates. In addition, different currencies may have significantly different implied volatilities. Input Description Correlation – Correlation measures the interrelationship between the movements of two variables. It is expressed as a percentage between –100% and +100%, where +100% represents perfectly correlated variables (meaning a movement of one variable is associated with a movement of the other variable in the same direction) and –100% implies that the variables are inversely correlated (meaning a movement of one variable is as sociated with a movement of the other variable in the opposite direction). The effect of correlation on the measurement of fair value depends on the specific terms of the instruments being valued, reflecting the range of different payoff features within su ch instruments. – Equity-to-FX correlation is important for equity options based on a currency other than the currency of the underlying stock. Equity-to-equity correlation is particularly important for complex options that incorporate, in some manner, diffe rent equities in the projected payoff. Equity dividend yields – The derivation of a forward price for an individual stock or index is important for measuring fair value for forward or swap contracts and for measuring fair value using option pricing models. The relationship between the current stock price and the forward price is based on a combination of expected future dividend levels and payment timings, and, to a lesser extent, the relevant funding rates applicable to the stock in question. Dividend yield s are generally expressed as an annualized percentage of the share price, with the lowest limit of 0% representing a stock that is not expected to pay any dividend. The dividend yield and timing represents the most significant parameter in determining fair value for instruments that are sensitive to an equity forward price.
UBS AG
Disclosure Of Significant Unobservable Inputs Used In Fair Value Measurement [Line Items]
Disclosure of significant unobservable inputs used in fair value measurement [Text Block]	Significant unobservable inputs in Level 3 positions This section discusses the significant unobservable inputs used in the valuation of Level 3 instruments and assesses the potential effect that a change in each unobservable input in isolation may have on a fair value measurement. Relationships between observable and unobservable inputs have not been included in the summary below. Input Description Bond price equivalent – Where market prices are not available for a bond, fair value is measured by comparison with observable pricing data from similar instruments. Factors considered when selecting comparable instruments include credit quality, maturity and industry of the issu er. Fair value may be measured either by a direct price comparison or by conversion of an instrument price into a yield (either as an outright yield or as a spread to LIBOR). – For corporate and municipal bonds, the range represents the range of prices from reference issuances used in determining fair value. Bonds priced at 0 are distressed to the point that no recovery is expected, while prices significantly in excess of 100 or par relate to inflation-linked or structured issuances that pay a coupon in exce ss of the market benchmark as of the measurement date. – For credit derivatives, the bond price range represents the range of prices used for reference instruments, which are typically converted to an equivalent yield or credit spread as part of the valuatio n process. Loan price equivalent – Where market prices are not available for a traded loan, fair value is measured by comparison with observable pricing data for similar instruments. Factors considered when selecting comparable instruments include industry segment, collateral quality, maturity and issuer-specific covenants. Fair value may be measured either by a direct price comparison or by conversion of an instrument price into a yield. The range represents the range of prices derived from referen ce issuances of a similar credit quality used to measure fair value for loans classified as Level 3. Loans priced at 0 are distressed to the point that no recovery is expected, while a current price of 100 represents a loan that is expected to be repaid in full. Credit spread – Valuation models for many credit derivatives require an input for the credit spread, which is a reflection of the credit quality of the associated referenced underlying. The credit spread of a particular security is quoted in relation to the yield on a benchmark security or reference rate, typically either US Treasury or LIBOR, and is generally expressed in terms of basis points. An increase / (decrease) in credit spread will increase / (decrease) the value of credit protection offered by credit default swap s and other credit derivative products. The income statement effect from such changes depends on the nature and direction of the positions held. Credit spreads may be negative where the asset is more creditworthy than the benchmark a gainst which the spread is calculated. A wider credit spread represents decreasing creditworthiness. The range represents a diverse set of underlyings, with the lower end of the range representing credits of the highest quality (e.g., approximating the ris k of LIBOR) and the upper end of the range representing greater levels of credit risk. Discount margin – The discount margin (DM) spread represents the discount rates applied to present value cash flows of an asset to reflect the market return required for uncertainty in the estimated cash flows. DM spreads are a rate or rates applied on top of a floating index (e.g., LIBOR) to discount expected cash flows. Generally, a decrease / (increase) in the DM in isolation would result in a higher / (low er) fair value. – The high end of the range relates to securities that are priced low within the market relative to the expected cash flow schedule. This indicates that the market is pricing an increased risk of credit loss into the security that is greater than what is being captured by the expected cash flow generation process. The low ends of the ranges are typical of funding rates on better-quality instruments. Funding spread – Structured financing transactions are valued using synthetic funding curves that best represent the assets that are pledged as collateral for the transactions. They are not representative of where UBS can fund itself on an unsecured basis, but provide an estimate of where UBS can source and deploy secured funding with count erparties for a given type of collateral. The funding spreads are expressed in terms of basis points over or under LIBOR, and if funding spreads widen, this increases the effect of discounting. – A small proportion of structured debt instruments and non-str uctured fixed-rate bonds within financial liabilities designated at fair value had an exposure to funding spreads that was longer in duration than the actively traded market. Volatility – Volatility measures the variability of future prices for a particular instrument and is generally expressed as a percentage, where a higher number reflects a more volatile instrument, for which future price movements are more likely to occur. Volatility is a key input into option models, where it is used to derive a probabi lity-based distribution of future prices for the underlying instrument. The effect of volatility on individual positions within the portfolio is driven primarily by whether the option contract is a long or short position. In most cases, the fair value of a n option increases as a result of an increase in volatility and is reduced by a decrease in volatility. Generally, volatility used in the measurement of fair value is derived from active-market option prices (referred to as implied volatility). A key featu re of implied volatility is the volatility “smile” or “skew”, which represents the effect of pricing options of different option strikes at different implied volatility levels. – Volatilities of low interest rates tend to be much higher than volatilities of high interest rates. In addition, different currencies may have significantly different implied volatilities. Input Description Correlation – Correlation measures the interrelationship between the movements of two variables. It is expressed as a percentage between –100% and +100%, where +100% represents perfectly correlated variables (meaning a movement of one variable is associated with a move ment of the other variable in the same direction) and –100% implies that the variables are inversely correlated (meaning a movement of one variable is associated with a movement of the other variable in the opposite direction). The effect of correlation on the measurement of fair value depends on the specific terms of the instruments being valued, reflecting the range of different payoff features within such instruments. – Equity-to-FX correlation is important for equity options based on a currency other than the currency of the underlying stock. Equity-to-equity correlation is particularly important for complex options that incorporate, in some manner, different equities in the projected payoff. Equity dividend yields – The derivation of a forward price fo r an individual stock or index is important for measuring fair value for forward or swap contracts and for measuring fair value using option pricing models. The relationship between the current stock price and the forward price is based on a combination of expected future dividend levels and payment timings, and, to a lesser extent, the relevant funding rates applicable to the stock in question. Dividend yields are generally expressed as an annualized percentage of the share price, with the lowest limit of 0% representing a stock that is not expected to pay any dividend. The dividend yield and timing represents the most significant parameter in determining fair value for instruments that are sensitive to an equity forward price.

FVM - Level 3 instruments_ Sens

FVM - Level 3 instruments: Sensitivity to changes in unobservable input assumptions (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	$ 29	$ 46
Unfavorable changes	[1]	(28)	(21)
Traded loans, loans designated at fair value, loan commitments and guarantees
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	40	11
Unfavorable changes	[1]	(52)	(11)
Securities financing transactions
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	105	87
Unfavorable changes	[1]	(105)	(87)
Auction rate securities
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	41	35
Unfavorable changes	[1]	(41)	(40)
Asset-backed securities
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	129	140
Unfavorable changes	[1]	(96)	(80)
Equity instruments
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	11	8
Unfavorable changes	[1]	(16)	(17)
Interest rate derivative contracts, net
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	10	31
Unfavorable changes	[1]	(14)	(35)
Credit derivative contracts, net
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1],[2]	20	12
Unfavorable changes	[1],[2]	(15)	(8)
Foreign exchange derivative contracts, net
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	318	183
Unfavorable changes	[1]	(294)	(197)
Equity / index derivative contracts, net
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	91	47
Unfavorable changes	[1]	(107)	(51)
Other
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	794	600
Unfavorable changes	[1]	(768)	(547)
UBS AG
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	29	46
Unfavorable changes	[1]	(28)	(21)
UBS AG \| Traded loans, loans designated at fair value, loan commitments and guarantees
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	40	11
Unfavorable changes	[1]	(52)	(11)
UBS AG \| Securities financing transactions
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	105	87
Unfavorable changes	[1]	(105)	(87)
UBS AG \| Auction rate securities
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	41	35
Unfavorable changes	[1]	(41)	(40)
UBS AG \| Asset-backed securities
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	129	140
Unfavorable changes	[1]	(96)	(80)
UBS AG \| Equity instruments
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	11	8
Unfavorable changes	[1]	(16)	(17)
UBS AG \| Interest rate derivative contracts, net
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	10	31
Unfavorable changes	[1]	(14)	(35)
UBS AG \| Credit derivative contracts, net
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1],[2]	20	12
Unfavorable changes	[1],[2]	(15)	(8)
UBS AG \| Foreign exchange derivative contracts, net
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	318	183
Unfavorable changes	[1]	(294)	(197)
UBS AG \| Equity / index derivative contracts, net
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	91	47
Unfavorable changes	[1]	(107)	(51)
UBS AG \| Other
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	794	600
Unfavorable changes	[1]	$ (768)	$ (547)

[1]	Sensitivity of issued and over-the-counter debt instruments is reported with the equivalent derivative or securities financing instrument
[2]	Includes refinements applied in estimating valuation uncertainty, resulting from a move to use issuer-specific proxy credit default swap curves rather than generic curves.

FVM - Movements of level 3 inst

FVM - Movements of level 3 instruments - Assets (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[1]	$ 362,448
Transfers into Level 3		1,100
Transfers out of Level 3		(1,900)
Balance at the end of period	[1]	404,805		$ 362,448
Level 3
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[1]	7,237
Balance at the end of period	[1]	8,278		7,237
Level 3 \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[2]	100
Balance at the end of period	[2]	100		100
Level 3 \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period		500
Balance at the end of period		1,200		500
Level 3 \| Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[3]	1,500
Balance at the end of period	[3]	1,500		1,500
Level 3 \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[2]	700
Balance at the end of period	[2]	700		700
Level 3 \| Financial assets at fair value held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	1,800	[5]	2,000
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	(100)		(100)
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	(100)		0
Purchases	[4]	800		500
Sales	[4]	(1,400)		(1,300)
Issuances	[4]	1,000		1,000
Settlements	[4]	0		0
Transfers into Level 3	[4]	300		200
Transfers out of Level 3	[4]	0		(400)
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[5]	2,300		1,800
Level 3 \| Financial assets at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	0	[5]	400
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		0
Purchases	[4]	0		0
Sales	[4]	0		(200)
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	0		0
Transfers out of Level 3	[4]	0		(200)
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[5]	0		0
Level 3 \| Financial assets at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	500	[5]	700
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		0
Purchases	[4]	700		300
Sales	[4]	(500)		(200)
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	100		0
Transfers out of Level 3	[4]	0		(200)
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[5]	800		500
Level 3 \| Financial assets at fair value held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	800	[5]	700
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4]	0		(100)
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	(100)		0
Purchases	[4]	0		0
Sales	[4]	(700)		(800)
Issuances	[4]	1,000		1,000
Settlements	[4]	0		0
Transfers into Level 3	[4]	100		0
Transfers out of Level 3	[4]	0		0
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[5]	1,100		800
Level 3 \| Financial assets at fair value held for trading \| Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	400	[5]	200
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		(100)
Purchases	[4]	100		100
Sales	[4]	(300)		0
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	200		200
Transfers out of Level 3	[4]	0		0
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[5]	400		400
Level 3 \| Financial assets at fair value not held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period		4,000	[5]	4,400
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	100		0
Purchases	[4]	800		1,200
Sales	[4]	(900)		(600)
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	100		100
Transfers out of Level 3	[4]	0		(1,200)
Foreign currency translation	[4]	0		0
Balance at the end of period	[5]	3,900	[4]	4,000
Level 3 \| Financial assets at fair value not held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period		1,200	[5]	1,800
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		0
Purchases	[4]	300		700
Sales	[4]	(700)		(100)
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	0		100
Transfers out of Level 3	[4]	0		(1,200)
Foreign currency translation	[4]	0		0
Balance at the end of period	[5]	900	[4]	1,200
Level 3 \| Financial assets at fair value not held for trading \| Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period		1,500	[5]	1,700
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		0
Purchases	[4]	0		0
Sales	[4]	0		(100)
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	0		0
Transfers out of Level 3	[4]	0		0
Foreign currency translation	[4]	0		0
Balance at the end of period	[5]	1,500	[4]	1,500
Level 3 \| Financial assets at fair value not held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period		500	[5]	500
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		0
Purchases	[4]	100		100
Sales	[4]	(100)		(200)
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	0		0
Transfers out of Level 3	[4]	0		0
Foreign currency translation	[4]	0		0
Balance at the end of period	[5]	500	[4]	500
Level 3 \| Financial assets at fair value not held for trading \| Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period		700	[5]	500
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		0
Purchases	[4]	400		500
Sales	[4]	(200)		(200)
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	0		0
Transfers out of Level 3	[4]	0		0
Foreign currency translation	[4]	0		0
Balance at the end of period	[5]	1,000	[4]	700
Level 3 \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period		1,300	[5]	1,400
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	300		(100)
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	400		0
Purchases	[4]	0		0
Sales	[4]	0		0
Issuances	[4]	700		400
Settlements	[4]	(500)		(200)
Transfers into Level 3	[4]	100		100
Transfers out of Level 3	[4]	(200)		(300)
Foreign currency translation	[4]	100		0
Balance at the end of period	[5]	1,800	[4]	1,300
Level 3 \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	300	[5]	400
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	200		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	200		0
Purchases	[4]	0		0
Sales	[4]	0		0
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	0		0
Transfers out of Level 3	[4]	0		(200)
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[5]	500		300
Level 3 \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	600	[5]	500
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	100		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	100		100
Purchases	[4]	0		0
Sales	[4]	0		0
Issuances	[4]	600		100
Settlements	[4]	(300)		0
Transfers into Level 3	[4]	0		100
Transfers out of Level 3	[4]	(100)		(100)
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[5]	900		600
Level 3 \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	400	[5]	500
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		(100)
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		(100)
Purchases	[4]	0		0
Sales	[4]	0		0
Issuances	[4]	100		200
Settlements	[4]	(200)		(100)
Transfers into Level 3	[4]	100		0
Transfers out of Level 3	[4]	0		(100)
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[5]	300		400
Level 3 \| Derivative financial instruments \| Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	0	[5]	0
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		0
Purchases	[4]	0		0
Sales	[4]	0		0
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	0		0
Transfers out of Level 3	[4]	0		0
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[5]	0		0
UBS AG
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[1]	362,322
Transfers into Level 3		1,100
Transfers out of Level 3		(1,900)
Balance at the end of period	[1]	404,576		362,322
UBS AG \| Level 3
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[1]	7,237
Balance at the end of period	[1]	8,278		7,237
UBS AG \| Level 3 \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[2]	100
Balance at the end of period	[2]	100		100
UBS AG \| Level 3 \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period		500
Balance at the end of period		1,200		500
UBS AG \| Level 3 \| Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[3]	1,500
Balance at the end of period	[3]	1,500		1,500
UBS AG \| Level 3 \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[2]	700
Balance at the end of period	[2]	700		700
UBS AG \| Level 3 \| Financial assets at fair value held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	1,800	[7]	2,000
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	(100)		(100)
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	(100)		0
Purchases	[4]	800		500
Sales	[4]	(1,400)		(1,300)
Issuances	[4]	1,000		1,000
Settlements	[4]	0		0
Transfers into Level 3	[4]	300		200
Transfers out of Level 3	[4]	0		(400)
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[7]	2,300		1,800
UBS AG \| Level 3 \| Financial assets at fair value held for trading \| Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	0	[7]	400
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		0
Purchases	[4]	0		0
Sales	[4]	0		(200)
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	0		0
Transfers out of Level 3	[4]	0		(200)
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[7]	0		0
UBS AG \| Level 3 \| Financial assets at fair value held for trading \| Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	500	[7]	700
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		0
Purchases	[4]	700		300
Sales	[4]	(500)		(200)
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	100		0
Transfers out of Level 3	[4]	0		(200)
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[7]	800		500
UBS AG \| Level 3 \| Financial assets at fair value held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	800	[7]	700
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		(100)
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	(100)		0
Purchases	[4]	0		0
Sales	[4]	(700)		(800)
Issuances	[4]	1,000		1,000
Settlements	[4]	0		0
Transfers into Level 3	[4]	100		0
Transfers out of Level 3	[4]	0		0
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[7]	1,100		800
UBS AG \| Level 3 \| Financial assets at fair value held for trading \| Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	400	[7]	200
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		(100)
Purchases	[4]	100		100
Sales	[4]	(300)		0
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	200		200
Transfers out of Level 3	[4]	0		0
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[7]	400		400
UBS AG \| Level 3 \| Financial assets at fair value not held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	4,000	[7]	4,400
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	100		0
Purchases	[4]	800		1,200
Sales	[4]	(900)		(600)
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	100		100
Transfers out of Level 3	[4]	0		(1,200)
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[7]	3,900		4,000
UBS AG \| Level 3 \| Financial assets at fair value not held for trading \| Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	1,200	[7]	1,800
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		0
Purchases	[4]	300		700
Sales	[4]	(700)		(100)
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	0		100
Transfers out of Level 3	[4]	0		(1,200)
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[7]	900		1,200
UBS AG \| Level 3 \| Financial assets at fair value not held for trading \| Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	1,500	[7]	1,700
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		0
Purchases	[4]	0		0
Sales	[4]	0		(100)
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	0		0
Transfers out of Level 3	[4]	0		0
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[7]	1,500		1,500
UBS AG \| Level 3 \| Financial assets at fair value not held for trading \| Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	500	[7]	500
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		0
Purchases	[4]	100		100
Sales	[4]	(100)		(200)
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	0		0
Transfers out of Level 3	[4]	0		0
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[7]	500		500
UBS AG \| Level 3 \| Financial assets at fair value not held for trading \| Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	700	[7]	500
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		0
Purchases	[4]	400		500
Sales	[4]	(200)		(200)
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	0		0
Transfers out of Level 3	[4]	0		0
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[7]	1,000		700
UBS AG \| Level 3 \| Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	1,300	[7]	1,400
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	300		(100)
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	400		0
Purchases	[4]	0		0
Sales	[4]	0		0
Issuances	[4]	700		400
Settlements	[4]	(500)		(200)
Transfers into Level 3	[4]	100		100
Transfers out of Level 3	[4]	(200)		(300)
Foreign currency translation	[4]	100		0
Balance at the end of period	[4],[7]	1,800		1,300
UBS AG \| Level 3 \| Derivative financial instruments \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	300	[7]	400
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	200		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	200		0
Purchases	[4]	0		0
Sales	[4]	0		0
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	0		0
Transfers out of Level 3	[4]	0		(200)
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[7]	500		300
UBS AG \| Level 3 \| Derivative financial instruments \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	600	[7]	500
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	100		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	100		100
Purchases	[4]	0		0
Sales	[4]	0		0
Issuances	[4]	600		100
Settlements	[4]	(300)		0
Transfers into Level 3	[4]	0		100
Transfers out of Level 3	[4]	(100)		(100)
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[7]	900		600
UBS AG \| Level 3 \| Derivative financial instruments \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	400	[7]	500
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		(100)
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		(100)
Purchases	[4]	0		0
Sales	[4]	0		0
Issuances	[4]	100		200
Settlements	[4]	(200)		(100)
Transfers into Level 3	[4]	100		0
Transfers out of Level 3	[4]	0		(100)
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[7]	300		400
UBS AG \| Level 3 \| Derivative financial instruments \| Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[4]	0	[7]	0
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[4],[6]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[4]	0		0
Purchases	[4]	0		0
Sales	[4]	0		0
Issuances	[4]	0		0
Settlements	[4]	0		0
Transfers into Level 3	[4]	0		0
Transfers out of Level 3	[4]	0		0
Foreign currency translation	[4]	0		0
Balance at the end of period	[4],[7]	$ 0		$ 0

[1]	Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented
[2]	The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments.
[3]	Bond price equivalent prior to the fourth quarter of 2020; discounted cash flow model thereafter.
[4]	Effective 1 January 2020, UBS has enhanced its disclosure of Level 3 movements by excluding from the table the impacts of instruments purchased during the period and sold prior to the end of the period. Prior-period comparatives have been restated accordingly
[5]	Total Level 3 assets as of 31 December 2020 were USD 8.3 billion (31 December 2019: USD 7.2 billion). Total Level 3 liabilities as of 31 December 2020 were USD 15.2 billion (31 December 2019: USD 12.8 billion).
[6]	Net gains / losses included in comprehensive income are composed of Net interest income, Other net income from financial instruments measured at fair value through profit or loss and Other income.
[7]	Total Level 3 assets as of 31 December 2020 were USD 8.3 billion (31 December 2019: USD 7.2 billion). Total Level 3 liabilities as of 31 December 2020 were USD 15.2 billion (31 December 2019: USD 12.8 billion).

FVM - Movements of level 3 in_2

FVM - Movements of level 3 instruments - Liabilities (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[1]	$ 291,452
Transfers into Level 3		1,400
Transfers out of Level 3		(3,400)
Balance at the end of period	[1]	325,069		$ 291,452
Level 3
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[1]	12,759
Balance at the end of period	[1]	15,212		12,759
Level 3 \| Derivative financial liabilities
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period		2,000	[2]	2,200
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[3]	1,300		100
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	1,200		100
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	1,200		200
Settlements	[2]	(900)		(400)
Transfers into Level 3	[2]	400		200
Transfers out of Level 3	[2]	(600)		(300)
Foreign currency translation	[2]	100		0
Balance at the end of period	[2]	3,500		2,000
Level 3 \| Derivative financial liabilities \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period		100	[2]	200
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[3]	300		0
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	300		0
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	300		0
Settlements	[2]	(200)		0
Transfers into Level 3	[2]	200		0
Transfers out of Level 3	[2]	(200)		(100)
Foreign currency translation	[2]	0		0
Balance at the end of period	[2]	500		100
Level 3 \| Derivative financial liabilities \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period		1,300	[2]	1,400
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[3]	1,000		300
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	800		200
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	800		0
Settlements	[2]	(600)		(300)
Transfers into Level 3	[2]	100		100
Transfers out of Level 3	[2]	(200)		(200)
Foreign currency translation	[2]	0		0
Balance at the end of period	[2]	2,300		1,300
Level 3 \| Derivative financial liabilities \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period		500	[2]	500
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[3]	0		(100)
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	0		(100)
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	100		200
Settlements	[2]	(100)		0
Transfers into Level 3	[2]	100		0
Transfers out of Level 3	[2]	(200)		(100)
Foreign currency translation	[2]	0		0
Balance at the end of period	[2]	500		500
Level 3 \| Derivative financial liabilities \| Other
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period		100	[2]	100
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[3]	0		0
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	0		0
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	0		0
Settlements	[2]	0		0
Transfers into Level 3	[2]	0		0
Transfers out of Level 3	[2]	0		0
Foreign currency translation	[2]	0		0
Balance at the end of period	[2]	100		100
Level 3 \| Debt issued designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period		9,900	[2]	11,000
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[3]	200		800
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	0		700
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	7,600		5,800
Settlements	[2]	(5,700)		(5,400)
Transfers into Level 3	[2]	500		700
Transfers out of Level 3	[2]	(1,700)		(3,100)
Foreign currency translation	[2]	200		0
Balance at the end of period	[2]	11,000		9,900
Level 3 \| Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period		800	[2]	1,000
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[3]	100		200
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	100		100
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	300		300
Settlements	[2]	(500)		(700)
Transfers into Level 3	[2]	0		0
Transfers out of Level 3	[2]	0		0
Foreign currency translation	[2]	0		0
Balance at the end of period	[2]	700		800
UBS AG
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[1]	291,452
Transfers into Level 3		1,400
Transfers out of Level 3		(3,400)
Balance at the end of period	[1]	325,080		291,452
UBS AG \| Level 3
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[1]	12,759
Balance at the end of period	[1]	15,212		12,759
UBS AG \| Level 3 \| Derivative financial liabilities
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[2]	2,000	[4]	2,200
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[4]	1,300		100
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	1,200		100
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	1,200		200
Settlements	[2]	(900)		(400)
Transfers into Level 3	[2]	400		200
Transfers out of Level 3	[2]	(600)		(300)
Foreign currency translation	[2]	100		0
Balance at the end of period	[2],[4]	3,500		2,000
UBS AG \| Level 3 \| Derivative financial liabilities \| Interest rate contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[2]	100	[4]	200
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[4]	300		0
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	300		0
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	300		0
Settlements	[2]	(200)		0
Transfers into Level 3	[2]	200		0
Transfers out of Level 3	[2]	(200)		(100)
Foreign currency translation	[2]	0		0
Balance at the end of period	[2],[4]	500		100
UBS AG \| Level 3 \| Derivative financial liabilities \| Equity / index contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[2]	1,300	[4]	1,400
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[4]	1,000		300
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	800		200
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	800		0
Settlements	[2]	(600)		(300)
Transfers into Level 3	[2]	100		100
Transfers out of Level 3	[2]	(200)		(200)
Foreign currency translation	[2]	0		0
Balance at the end of period	[2],[4]	2,300		1,300
UBS AG \| Level 3 \| Derivative financial liabilities \| Credit derivative contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[2]	500	[4]	500
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[4]	0		(100)
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	0		(100)
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	100		200
Settlements	[2]	(100)		0
Transfers into Level 3	[2]	100		0
Transfers out of Level 3	[2]	(200)		(100)
Foreign currency translation	[2]	0		0
Balance at the end of period	[2],[4]	500		500
UBS AG \| Level 3 \| Derivative financial liabilities \| Other
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[2]	100	[4]	100
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[4]	0		0
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	0		0
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	0		0
Settlements	[2]	0		0
Transfers into Level 3	[2]	0		0
Transfers out of Level 3	[2]	0		0
Foreign currency translation	[2]	0		0
Balance at the end of period	[2],[4]	100		100
UBS AG \| Level 3 \| Debt issued designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[2]	9,600	[4]	11,000
Issuances		6,600
Balance at the end of period	[2],[4]	9,600		9,600
UBS AG \| Level 3 \| Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[2]	1,000	[4]	1,000
Issuances		1,400
Balance at the end of period	[2],[4]	$ 2,100		$ 1,000

[1]	Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented
[2]	Effective 1 January 2020, UBS has enhanced its disclosure of Level 3 movements by excluding from the table the impacts of instruments purchased during the period and sold prior to the end of the period. Prior-period comparatives have been restated accordingly
[3]	Net gains / losses included in comprehensive income are composed of Net interest income, Other net income from financial instruments measured at fair value through profit or loss and Other income.
[4]	Total Level 3 assets as of 31 December 2020 were USD 8.3 billion (31 December 2019: USD 7.2 billion). Total Level 3 liabilities as of 31 December 2020 were USD 15.2 billion (31 December 2019: USD 12.8 billion).

Maximum exposure to credit risk

Maximum exposure to credit risk - assets at fair value (Detail) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Financial Assets At Fair Value [Member]
Credit enhancements
Loan commitments and forward starting reverse repurchase agreements classified as derivatives		$ 0	$ 0
Total financial assets measured at fair value \| Financial Assets At Fair Value [Member]
Maximum Exposure To Credit Risk [Line Items]
Maximum Exposure To Credit Risk		267,100	216,700
Collateral
Cash collateral received		0	100
Collateralized by securities		43,600	37,400
Secured by real estate		0	0
Other collateral		0	100
Credit enhancements
Netting		138,400	107,400
Credit derivative contracts		0	0
Guarantees		0	0
Exposure to credit risk after collateral and credit enhancements		85,100	71,700
Financial assets at fair value held for trading - debt instruments \| Financial Assets At Fair Value [Member]
Maximum Exposure To Credit Risk [Line Items]
Maximum Exposure To Credit Risk	[1],[2]	24,600	21,900
Credit enhancements
Exposure to credit risk after collateral and credit enhancements	[1],[2]	24,600	21,900
Derivative financial instruments \| Financial Assets At Fair Value [Member]
Maximum Exposure To Credit Risk [Line Items]
Maximum Exposure To Credit Risk	[3],[4]	159,600	121,800
Collateral
Collateralized by securities	[3],[4]	6,000	3,300
Credit enhancements
Netting	[3],[4]	138,400	107,400
Exposure to credit risk after collateral and credit enhancements	[3],[4]	15,200	11,100
Brokerage receivables \| Financial Assets At Fair Value [Member]
Maximum Exposure To Credit Risk [Line Items]
Maximum Exposure To Credit Risk		24,700	18,000
Collateral
Collateralized by securities		24,400	17,800
Credit enhancements
Exposure to credit risk after collateral and credit enhancements		300	200
Financial assets at fair value not held for trading - debt instruments \| Financial Assets At Fair Value [Member]
Maximum Exposure To Credit Risk [Line Items]
Maximum Exposure To Credit Risk	[5]	58,200	55,000
Collateral
Cash collateral received	[5]		100
Collateralized by securities	[5]	13,200	16,300
Other collateral	[5]		100
Credit enhancements
Exposure to credit risk after collateral and credit enhancements	[5]	45,000	38,600
Guarantees \| Financial Assets At Fair Value [Member]
Maximum Exposure To Credit Risk [Line Items]
Maximum Exposure To Credit Risk	[6]	500	1,000
Collateral
Other collateral	[6]	100
Credit enhancements
Guarantees	[6]	300	300
Exposure to credit risk after collateral and credit enhancements	[6]	0	700
Loan commitments
Credit enhancements
Notional amounts of derivatives		9,400	6,300
Forward starting reverse repurchase agreements
Credit enhancements
Notional amounts of derivatives		21,900	20,300
UBS AG \| Financial Assets At Fair Value [Member]
Credit enhancements
Loan commitments and forward starting reverse repurchase agreements classified as derivatives		0	0
UBS AG \| Total financial assets measured at fair value \| Financial Assets At Fair Value [Member]
Maximum Exposure To Credit Risk [Line Items]
Maximum Exposure To Credit Risk		267,200	216,800
Collateral
Cash collateral received		0	100
Collateralized by securities		43,600	37,400
Secured by real estate		0	0
Other collateral		0	100
Credit enhancements
Netting		138,400	107,400
Credit derivative contracts		0	0
Guarantees		0	0
Exposure to credit risk after collateral and credit enhancements		85,200	71,900
UBS AG \| Financial assets at fair value held for trading - debt instruments \| Financial Assets At Fair Value [Member]
Maximum Exposure To Credit Risk [Line Items]
Maximum Exposure To Credit Risk	[1],[2]	24,700	22,000
Credit enhancements
Exposure to credit risk after collateral and credit enhancements	[1],[2]	24,700	22,000
UBS AG \| Derivative financial instruments \| Financial Assets At Fair Value [Member]
Maximum Exposure To Credit Risk [Line Items]
Maximum Exposure To Credit Risk	[3],[4]	159,600	121,800
Collateral
Collateralized by securities	[3],[4]	6,000	3,300
Credit enhancements
Netting	[3],[4]	138,400	107,400
Exposure to credit risk after collateral and credit enhancements	[3],[4]	15,200	11,100
UBS AG \| Brokerage receivables \| Financial Assets At Fair Value [Member]
Maximum Exposure To Credit Risk [Line Items]
Maximum Exposure To Credit Risk		24,700	18,000
Collateral
Cash collateral received			0
Collateralized by securities		24,400	17,800
Credit enhancements
Exposure to credit risk after collateral and credit enhancements		300	200
UBS AG \| Financial assets at fair value not held for trading - debt instruments \| Financial Assets At Fair Value [Member]
Maximum Exposure To Credit Risk [Line Items]
Maximum Exposure To Credit Risk	[5]	58,200	55,000
Collateral
Cash collateral received	[5]		100
Collateralized by securities	[5]	13,200	16,300
Other collateral	[5]		100
Credit enhancements
Exposure to credit risk after collateral and credit enhancements	[5]	45,000	38,600
UBS AG \| Guarantees \| Financial Assets At Fair Value [Member]
Maximum Exposure To Credit Risk [Line Items]
Maximum Exposure To Credit Risk	[6]	500	1,000
Collateral
Other collateral	[6]	100
Credit enhancements
Guarantees	[6]	300	300
Exposure to credit risk after collateral and credit enhancements	[6]	0	700
UBS AG \| Loan commitments
Credit enhancements
Notional amounts of derivatives		9,400	6,300
UBS AG \| Forward starting reverse repurchase agreements
Credit enhancements
Notional amounts of derivatives		$ 21,900	$ 20,300

[1]	Does not include investment fund units.
[2]	These positions are generally managed under the market risk framework. For the purpose of this disclosure, collateral and credit enhancements were not considered
[3]	Includes USD 0 million (31 December 2019: USD 0 million) fair values of loan commitments and forward starting reverse repurchase agreements classified as derivatives. The full contractual committed amount of forward starting reverse repurchase agreements (generally highly collateralized) of USD 21.9 billion (31 December 2019: USD 20.3 billion) and derivative loan commitments (generally unsecured) of USD 9.4 billion (31 December 2019: USD 6.3 billion) is presented in Note 10 under notional amounts.
[4]	The amount shown in the “Netting” column represents the netting potential not recognized on the balance sheet. Refer to Note 22 for more information.
[5]	Financial assets at fair value not held for trading collateralized by securities consisted of structured loans and reverse repurchase and securities borrowing agreements.
[6]	The amount shown in the “Guarantees” column largely relates to sub-participations.

FVM - Financial instruments not

FVM - Financial instruments not measured at fair value - Assets (Detail) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Carrying amount
Cash and balances at central banks		$ 158,231	$ 107,068
Loans and advances to banks		15,444	12,447
Receivables from securities financing transactions		74,210	84,245
Cash collateral receivables on derivative instruments		32,737	23,289
Loans and advances to customers		379,528	326,786
Other financial assets measured at amortized cost		27,194	22,980
Fair Value
Financial assets measured at fair value	[1]	404,805	362,448
Level 1
Fair Value
Financial assets measured at fair value	[1]	156,696	161,101
Level 2
Fair Value
Financial assets measured at fair value	[1]	239,831	194,110
Level 3
Fair Value
Financial assets measured at fair value	[1]	8,278	7,237
Not measured at fair value
Carrying amount
Cash and balances at central banks	[2]	158,200	107,100
Loans and advances to banks	[2]	15,400	12,400
Receivables from securities financing transactions	[2]	74,200	84,200
Cash collateral receivables on derivative instruments	[2]	32,700	23,300
Loans and advances to customers	[2]	379,500	326,800
Other financial assets measured at amortized cost	[2]	27,200	23,000
Not measured at fair value \| Cash and balances at central banks
Fair Value
Financial assets measured at fair value	[3],[4]	158,200	107,100
Not measured at fair value \| Cash and balances at central banks \| Carrying amount approximates fair value
Fair Value
Financial assets measured at fair value	[2],[4]	158,100	107,000
Not measured at fair value \| Cash and balances at central banks \| Level 1
Fair Value
Financial assets measured at fair value	[2]	100	100
Not measured at fair value \| Cash and balances at central banks \| Level 2
Fair Value
Financial assets measured at fair value	[2]	0	0
Not measured at fair value \| Cash and balances at central banks \| Level 3
Fair Value
Financial assets measured at fair value	[2]	0	0
Not measured at fair value \| Loans and advances to banks
Fair Value
Financial assets measured at fair value	[3],[4]	15,400	12,400
Financial assets not measured at fair value expected to be recovered or settled after 12 months		0	0
Not measured at fair value \| Loans and advances to banks \| Carrying amount approximates fair value
Fair Value
Financial assets measured at fair value	[2],[4]	14,700	11,800
Not measured at fair value \| Loans and advances to banks \| Level 1
Fair Value
Financial assets measured at fair value	[2]	0	0
Not measured at fair value \| Loans and advances to banks \| Level 2
Fair Value
Financial assets measured at fair value	[2]	600	500
Not measured at fair value \| Loans and advances to banks \| Level 3
Fair Value
Financial assets measured at fair value	[2]	100	200
Not measured at fair value \| Receivables from securities financing transactions
Fair Value
Financial assets measured at fair value	[3],[4]	74,200	84,200
Financial assets not measured at fair value expected to be recovered or settled after 12 months		1,000	1,000
Not measured at fair value \| Receivables from securities financing transactions \| Carrying amount approximates fair value
Fair Value
Financial assets measured at fair value	[2],[4]	64,900	74,000
Not measured at fair value \| Receivables from securities financing transactions \| Level 1
Fair Value
Financial assets measured at fair value	[2]	0	0
Not measured at fair value \| Receivables from securities financing transactions \| Level 2
Fair Value
Financial assets measured at fair value	[2]	7,600	8,600
Not measured at fair value \| Receivables from securities financing transactions \| Level 3
Fair Value
Financial assets measured at fair value	[2]	1,700	1,600
Not measured at fair value \| Cash collateral receivables on derivative instruments
Fair Value
Financial assets measured at fair value	[3],[4]	32,700	23,300
Not measured at fair value \| Cash collateral receivables on derivative instruments \| Carrying amount approximates fair value
Fair Value
Financial assets measured at fair value	[2],[4]	32,700	23,300
Not measured at fair value \| Cash collateral receivables on derivative instruments \| Level 1
Fair Value
Financial assets measured at fair value	[2]	0	0
Not measured at fair value \| Cash collateral receivables on derivative instruments \| Level 2
Fair Value
Financial assets measured at fair value	[2]	0	0
Not measured at fair value \| Cash collateral receivables on derivative instruments \| Level 3
Fair Value
Financial assets measured at fair value	[2]	0	0
Not measured at fair value \| Loans and advances to customers
Fair Value
Financial assets measured at fair value	[3],[4]	380,800	329,100
Financial assets not measured at fair value expected to be recovered or settled after 12 months		163,000	140,000
Not measured at fair value \| Loans and advances to customers \| Carrying amount approximates fair value
Fair Value
Financial assets measured at fair value	[2],[4]	172,000	151,600
Not measured at fair value \| Loans and advances to customers \| Level 1
Fair Value
Financial assets measured at fair value	[2]	0	0
Not measured at fair value \| Loans and advances to customers \| Level 2
Fair Value
Financial assets measured at fair value	[2]	34,200	25,400
Not measured at fair value \| Loans and advances to customers \| Level 3
Fair Value
Financial assets measured at fair value	[2]	174,600	152,200
Not measured at fair value \| Other financial assets measured at amortized cost
Fair Value
Financial assets measured at fair value	[3],[4]	28,000	23,200
Financial assets not measured at fair value expected to be recovered or settled after 12 months		20,000	16,000
Not measured at fair value \| Other financial assets measured at amortized cost \| Carrying amount approximates fair value
Fair Value
Financial assets measured at fair value	[2],[4]	5,300	5,700
Not measured at fair value \| Other financial assets measured at amortized cost \| Level 1
Fair Value
Financial assets measured at fair value	[2]	9,400	8,400
Not measured at fair value \| Other financial assets measured at amortized cost \| Level 2
Fair Value
Financial assets measured at fair value	[2]	10,900	6,400
Not measured at fair value \| Other financial assets measured at amortized cost \| Level 3
Fair Value
Financial assets measured at fair value	[2]	2,300	2,800
UBS AG
Carrying amount
Cash and balances at central banks		158,231	107,068
Loans and advances to banks		15,344	12,379
Receivables from securities financing transactions		74,210	84,245
Cash collateral receivables on derivative instruments		32,737	23,289
Loans and advances to customers		380,977	327,992
Other financial assets measured at amortized cost		27,219	23,012
Fair Value
Financial assets measured at fair value	[1]	404,576	362,322
UBS AG \| Level 1
Fair Value
Financial assets measured at fair value	[1]	156,716	161,102
UBS AG \| Level 2
Fair Value
Financial assets measured at fair value	[1]	239,583	193,983
UBS AG \| Level 3
Fair Value
Financial assets measured at fair value	[1]	8,278	7,237
UBS AG \| Not measured at fair value
Carrying amount
Cash and balances at central banks	[5]	158,200	107,100
Loans and advances to banks	[5]	15,300	12,400
Receivables from securities financing transactions	[5]	74,200	84,200
Cash collateral receivables on derivative instruments	[5]	32,700	23,300
Loans and advances to customers	[5]	381,000	328,000
Other financial assets measured at amortized cost	[5]	27,200	23,000
UBS AG \| Not measured at fair value \| Cash and balances at central banks
Fair Value
Financial assets measured at fair value	[4],[5]	158,200	107,100
UBS AG \| Not measured at fair value \| Cash and balances at central banks \| Carrying amount approximates fair value
Fair Value
Financial assets measured at fair value	[4],[5]	158,100	107,000
UBS AG \| Not measured at fair value \| Cash and balances at central banks \| Level 1
Fair Value
Financial assets measured at fair value	[5]	100	100
UBS AG \| Not measured at fair value \| Cash and balances at central banks \| Level 2
Fair Value
Financial assets measured at fair value	[5]	0	0
UBS AG \| Not measured at fair value \| Cash and balances at central banks \| Level 3
Fair Value
Financial assets measured at fair value	[5]	0	0
UBS AG \| Not measured at fair value \| Loans and advances to banks
Fair Value
Financial assets measured at fair value	[4],[5]	15,300	12,400
Financial assets not measured at fair value expected to be recovered or settled after 12 months		0	0
UBS AG \| Not measured at fair value \| Loans and advances to banks \| Carrying amount approximates fair value
Fair Value
Financial assets measured at fair value	[4],[5]	14,600	11,700
UBS AG \| Not measured at fair value \| Loans and advances to banks \| Level 1
Fair Value
Financial assets measured at fair value	[5]	0	0
UBS AG \| Not measured at fair value \| Loans and advances to banks \| Level 2
Fair Value
Financial assets measured at fair value	[5]	600	500
UBS AG \| Not measured at fair value \| Loans and advances to banks \| Level 3
Fair Value
Financial assets measured at fair value	[5]	100	200
UBS AG \| Not measured at fair value \| Receivables from securities financing transactions
Fair Value
Financial assets measured at fair value	[4],[5]	74,200	84,200
Financial assets not measured at fair value expected to be recovered or settled after 12 months		1,000	1,000
UBS AG \| Not measured at fair value \| Receivables from securities financing transactions \| Carrying amount approximates fair value
Fair Value
Financial assets measured at fair value	[4],[5]	64,900	74,000
UBS AG \| Not measured at fair value \| Receivables from securities financing transactions \| Level 1
Fair Value
Financial assets measured at fair value	[5]	0	0
UBS AG \| Not measured at fair value \| Receivables from securities financing transactions \| Level 2
Fair Value
Financial assets measured at fair value	[5]	7,600	8,600
UBS AG \| Not measured at fair value \| Receivables from securities financing transactions \| Level 3
Fair Value
Financial assets measured at fair value	[5]	1,700	1,600
UBS AG \| Not measured at fair value \| Cash collateral receivables on derivative instruments
Fair Value
Financial assets measured at fair value	[4],[5]	32,700	23,300
UBS AG \| Not measured at fair value \| Cash collateral receivables on derivative instruments \| Carrying amount approximates fair value
Fair Value
Financial assets measured at fair value	[4],[5]	32,700	23,300
UBS AG \| Not measured at fair value \| Cash collateral receivables on derivative instruments \| Level 1
Fair Value
Financial assets measured at fair value	[5]	0	0
UBS AG \| Not measured at fair value \| Cash collateral receivables on derivative instruments \| Level 2
Fair Value
Financial assets measured at fair value	[5]	0	0
UBS AG \| Not measured at fair value \| Cash collateral receivables on derivative instruments \| Level 3
Fair Value
Financial assets measured at fair value	[5]	0	0
UBS AG \| Not measured at fair value \| Loans and advances to customers
Fair Value
Financial assets measured at fair value	[4],[5]	382,300	330,300
Financial assets not measured at fair value expected to be recovered or settled after 12 months		163,000	140,000
UBS AG \| Not measured at fair value \| Loans and advances to customers \| Carrying amount approximates fair value
Fair Value
Financial assets measured at fair value	[4],[5]	173,100	152,500
UBS AG \| Not measured at fair value \| Loans and advances to customers \| Level 1
Fair Value
Financial assets measured at fair value	[5]	0	0
UBS AG \| Not measured at fair value \| Loans and advances to customers \| Level 2
Fair Value
Financial assets measured at fair value	[5]	34,200	25,700
UBS AG \| Not measured at fair value \| Loans and advances to customers \| Level 3
Fair Value
Financial assets measured at fair value	[5]	174,900	152,200
UBS AG \| Not measured at fair value \| Other financial assets measured at amortized cost
Fair Value
Financial assets measured at fair value	[4],[5]	28,000	23,300
Financial assets not measured at fair value expected to be recovered or settled after 12 months		20,000	16,000
UBS AG \| Not measured at fair value \| Other financial assets measured at amortized cost \| Carrying amount approximates fair value
Fair Value
Financial assets measured at fair value	[4],[5]	5,400	5,800
UBS AG \| Not measured at fair value \| Other financial assets measured at amortized cost \| Level 1
Fair Value
Financial assets measured at fair value	[5]	9,400	8,400
UBS AG \| Not measured at fair value \| Other financial assets measured at amortized cost \| Level 2
Fair Value
Financial assets measured at fair value	[5]	10,900	6,400
UBS AG \| Not measured at fair value \| Other financial assets measured at amortized cost \| Level 3
Fair Value
Financial assets measured at fair value	[5]	$ 2,300	$ 2,800

[1]	Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented
[2]	As of 31 December 2020, USD 0 billion of Loans and advances to banks, USD 1 billion of Receivables from securities financing transactions, USD 163 billion of Loans and advances to customers and USD 20 billion of Other financial assets measured at amortized cost were expected to be recovered or settled after 12 months. As of 31 December 2019, USD 0 billion of Loans and advances to banks, USD 1 billion of Receivables from securities financing transactions, USD 140 billion of Loans and advances to customers and USD 16 billion of Other financial assets measured at amortized cost were expected to be recovered or settled after 12 months.
[3]	Excludes lease liabilities.
[4]	Includes certain financial instruments where the carrying amount is a reasonable approximation of the fair value due to the instruments’ short-term nature (instruments that are receivable or payable on demand, or with a remaining maturity (excluding the effects of callable features) of three months or less)
[5]	As of 31 December 2020, USD 0 billion of Loans and advances to banks, USD 1 billion of Receivables from securities financing transactions, USD 163 billion of Loans and advances to customers and USD 20 billion of Other financial assets measured at amortized cost were expected to be recovered or settled after 12 months. As of 31 December 2019, USD 0 billion of Loans and advances to banks, USD 1 billion of Receivables from securities financing transactions, USD 140 billion of Loans and advances to customers and USD 16 billion of Other financial assets measured at amortized cost were expected to be recovered or settled after 12 months.

FVM - Financial instruments n_2

FVM - Financial instruments not measured at fair value - Liabilities (Detail) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Carrying amount
Amounts due to banks		$ 11,050	$ 6,570
Payables from securities financing transactions		6,321	7,778
Cash collateral payables on derivative instruments		37,312	31,415
Customer deposits		524,605	448,284
Debt issued measured at amortized cost	[1]	139,232	110,497
Other financial liabilities measured at amortized cost		9,729	9,712
Fair Value
Financial liabilities measured at fair value	[2]	325,069	291,452
Level 1
Fair Value
Financial liabilities measured at fair value	[2]	27,635	26,176
Level 2
Fair Value
Financial liabilities measured at fair value	[2]	282,222	252,518
Level 3
Fair Value
Financial liabilities measured at fair value	[2]	15,212	12,759
Not measured at fair value
Carrying amount
Amounts due to banks		11,000	6,600
Payables from securities financing transactions		6,300	7,800
Cash collateral payables on derivative instruments		37,300	31,400
Customer deposits		524,600	448,300
Debt issued measured at amortized cost		139,200	110,500
Other financial liabilities measured at amortized cost	[3]	5,800	5,800
Not measured at fair value \| Amount due to banks
Fair Value
Financial liabilities measured at fair value		11,000	6,600
Not measured at fair value \| Amount due to banks \| Carrying amount approximates fair value
Fair Value
Financial liabilities measured at fair value	[4]	8,500	5,600
Not measured at fair value \| Amount due to banks \| Level 1
Fair Value
Financial liabilities measured at fair value		0	0
Not measured at fair value \| Amount due to banks \| Level 2
Fair Value
Financial liabilities measured at fair value		2,600	900
Not measured at fair value \| Amount due to banks \| Level 3
Fair Value
Financial liabilities measured at fair value		0	0
Not measured at fair value \| Payables from securities financing transactions
Fair Value
Financial liabilities measured at fair value		6,300	7,800
Not measured at fair value \| Payables from securities financing transactions \| Carrying amount approximates fair value
Fair Value
Financial liabilities measured at fair value	[4]	6,000	7,500
Not measured at fair value \| Payables from securities financing transactions \| Level 1
Fair Value
Financial liabilities measured at fair value		0	0
Not measured at fair value \| Payables from securities financing transactions \| Level 2
Fair Value
Financial liabilities measured at fair value		300	300
Not measured at fair value \| Payables from securities financing transactions \| Level 3
Fair Value
Financial liabilities measured at fair value		0	0
Not measured at fair value \| Cash collateral payables on derivative instruments
Fair Value
Financial liabilities measured at fair value		37,300	31,400
Not measured at fair value \| Cash collateral payables on derivative instruments \| Carrying amount approximates fair value
Fair Value
Financial liabilities measured at fair value	[4]	37,300	31,400
Not measured at fair value \| Cash collateral payables on derivative instruments \| Level 1
Fair Value
Financial liabilities measured at fair value		0	0
Not measured at fair value \| Cash collateral payables on derivative instruments \| Level 2
Fair Value
Financial liabilities measured at fair value		0	0
Not measured at fair value \| Cash collateral payables on derivative instruments \| Level 3
Fair Value
Financial liabilities measured at fair value		0	0
Not measured at fair value \| Customer deposits
Fair Value
Financial liabilities measured at fair value		524,700	448,400
Not measured at fair value \| Customer deposits \| Carrying amount approximates fair value
Fair Value
Financial liabilities measured at fair value	[4]	519,400	439,100
Not measured at fair value \| Customer deposits \| Level 1
Fair Value
Financial liabilities measured at fair value		0	0
Not measured at fair value \| Customer deposits \| Level 2
Fair Value
Financial liabilities measured at fair value		5,300	9,300
Not measured at fair value \| Customer deposits \| Level 3
Fair Value
Financial liabilities measured at fair value		0	0
Not measured at fair value \| Debt issued measured at amortized cost
Fair Value
Financial liabilities measured at fair value		141,900	113,600
Not measured at fair value \| Debt issued measured at amortized cost \| Carrying amount approximates fair value
Fair Value
Financial liabilities measured at fair value	[4]	16,400	8,700
Not measured at fair value \| Debt issued measured at amortized cost \| Level 1
Fair Value
Financial liabilities measured at fair value		0	0
Not measured at fair value \| Debt issued measured at amortized cost \| Level 2
Fair Value
Financial liabilities measured at fair value		125,500	104,900
Not measured at fair value \| Debt issued measured at amortized cost \| Level 3
Fair Value
Financial liabilities measured at fair value		0	0
Not measured at fair value \| Other financial liabilities measured at amortized cost
Fair Value
Financial liabilities measured at fair value	[3]	5,800	5,700
Not measured at fair value \| Other financial liabilities measured at amortized cost \| Carrying amount approximates fair value
Fair Value
Financial liabilities measured at fair value	[4]	5,700	5,700
Not measured at fair value \| Other financial liabilities measured at amortized cost \| Level 1
Fair Value
Financial liabilities measured at fair value	[3]	0	0
Not measured at fair value \| Other financial liabilities measured at amortized cost \| Level 2
Fair Value
Financial liabilities measured at fair value	[3]	0	0
Not measured at fair value \| Other financial liabilities measured at amortized cost \| Level 3
Fair Value
Financial liabilities measured at fair value	[3]	100	0
UBS AG
Carrying amount
Amounts due to banks		11,050	6,570
Payables from securities financing transactions		6,321	7,778
Cash collateral payables on derivative instruments		37,313	31,416
Customer deposits		527,929	450,591
Funding from UBS Group AG and its subsidiaries	[5],[6]	53,979	47,866
Debt issued measured at amortized cost	[1]	85,351	62,835
Other financial liabilities measured at amortized cost		10,421	10,373
Fair Value
Financial liabilities measured at fair value	[2]	325,080	291,452
UBS AG \| Level 1
Fair Value
Financial liabilities measured at fair value	[2]	27,635	26,176
UBS AG \| Level 2
Fair Value
Financial liabilities measured at fair value	[2]	282,233	252,518
UBS AG \| Level 3
Fair Value
Financial liabilities measured at fair value	[2]	15,212	12,759
UBS AG \| Not measured at fair value
Carrying amount
Amounts due to banks		11,000	6,600
Payables from securities financing transactions		6,300	7,800
Cash collateral payables on derivative instruments		37,300	31,400
Customer deposits		527,900	450,600
Funding from UBS Group AG and its subsidiaries		54,000	47,900
Debt issued measured at amortized cost		85,400	62,800
Other financial liabilities measured at amortized cost	[3]	6,600	6,500
UBS AG \| Not measured at fair value \| Amount due to banks
Fair Value
Financial liabilities measured at fair value	[4]	11,100	6,600
UBS AG \| Not measured at fair value \| Amount due to banks \| Carrying amount approximates fair value
Fair Value
Financial liabilities measured at fair value	[4]	8,500	5,600
UBS AG \| Not measured at fair value \| Amount due to banks \| Level 1
Fair Value
Financial liabilities measured at fair value		0	0
UBS AG \| Not measured at fair value \| Amount due to banks \| Level 2
Fair Value
Financial liabilities measured at fair value		2,600	900
UBS AG \| Not measured at fair value \| Amount due to banks \| Level 3
Fair Value
Financial liabilities measured at fair value		0	0
UBS AG \| Not measured at fair value \| Payables from securities financing transactions
Fair Value
Financial liabilities measured at fair value	[4]	6,300	7,800
UBS AG \| Not measured at fair value \| Payables from securities financing transactions \| Carrying amount approximates fair value
Fair Value
Financial liabilities measured at fair value	[4]	6,000	7,500
UBS AG \| Not measured at fair value \| Payables from securities financing transactions \| Level 1
Fair Value
Financial liabilities measured at fair value		0	0
UBS AG \| Not measured at fair value \| Payables from securities financing transactions \| Level 2
Fair Value
Financial liabilities measured at fair value		200	300
UBS AG \| Not measured at fair value \| Payables from securities financing transactions \| Level 3
Fair Value
Financial liabilities measured at fair value		0	0
UBS AG \| Not measured at fair value \| Cash collateral payables on derivative instruments
Fair Value
Financial liabilities measured at fair value	[4]	37,300	31,400
UBS AG \| Not measured at fair value \| Cash collateral payables on derivative instruments \| Carrying amount approximates fair value
Fair Value
Financial liabilities measured at fair value	[4]	37,300	31,400
UBS AG \| Not measured at fair value \| Cash collateral payables on derivative instruments \| Level 1
Fair Value
Financial liabilities measured at fair value		0	0
UBS AG \| Not measured at fair value \| Cash collateral payables on derivative instruments \| Level 2
Fair Value
Financial liabilities measured at fair value		0	0
UBS AG \| Not measured at fair value \| Cash collateral payables on derivative instruments \| Level 3
Fair Value
Financial liabilities measured at fair value		0	0
UBS AG \| Not measured at fair value \| Customer deposits
Fair Value
Financial liabilities measured at fair value	[4]	528,000	450,700
UBS AG \| Not measured at fair value \| Customer deposits \| Carrying amount approximates fair value
Fair Value
Financial liabilities measured at fair value	[4]	521,800	440,500
UBS AG \| Not measured at fair value \| Customer deposits \| Level 1
Fair Value
Financial liabilities measured at fair value		0	0
UBS AG \| Not measured at fair value \| Customer deposits \| Level 2
Fair Value
Financial liabilities measured at fair value		6,200	10,200
UBS AG \| Not measured at fair value \| Customer deposits \| Level 3
Fair Value
Financial liabilities measured at fair value		0	0
UBS AG \| Not measured at fair value \| Funding from UBS Group AG and its subsidiaries
Fair Value
Financial liabilities measured at fair value	[4]	55,600	49,600
UBS AG \| Not measured at fair value \| Funding from UBS Group AG and its subsidiaries \| Carrying amount approximates fair value
Fair Value
Financial liabilities measured at fair value	[4]	0	0
UBS AG \| Not measured at fair value \| Funding from UBS Group AG and its subsidiaries \| Level 1
Fair Value
Financial liabilities measured at fair value		0	0
UBS AG \| Not measured at fair value \| Funding from UBS Group AG and its subsidiaries \| Level 2
Fair Value
Financial liabilities measured at fair value		55,600	49,600
UBS AG \| Not measured at fair value \| Funding from UBS Group AG and its subsidiaries \| Level 3
Fair Value
Financial liabilities measured at fair value		0	0
UBS AG \| Not measured at fair value \| Debt issued measured at amortized cost
Fair Value
Financial liabilities measured at fair value	[4]	86,300	64,300
UBS AG \| Not measured at fair value \| Debt issued measured at amortized cost \| Carrying amount approximates fair value
Fair Value
Financial liabilities measured at fair value	[4]	16,400	8,700
UBS AG \| Not measured at fair value \| Debt issued measured at amortized cost \| Level 1
Fair Value
Financial liabilities measured at fair value		0	0
UBS AG \| Not measured at fair value \| Debt issued measured at amortized cost \| Level 2
Fair Value
Financial liabilities measured at fair value		70,000	55,500
UBS AG \| Not measured at fair value \| Debt issued measured at amortized cost \| Level 3
Fair Value
Financial liabilities measured at fair value		0	0
UBS AG \| Not measured at fair value \| Other financial liabilities measured at amortized cost
Fair Value
Financial liabilities measured at fair value	[4]	6,700	6,500
UBS AG \| Not measured at fair value \| Other financial liabilities measured at amortized cost \| Carrying amount approximates fair value
Fair Value
Financial liabilities measured at fair value	[3],[4]	6,600	6,500
UBS AG \| Not measured at fair value \| Other financial liabilities measured at amortized cost \| Level 1
Fair Value
Financial liabilities measured at fair value	[3]	0	0
UBS AG \| Not measured at fair value \| Other financial liabilities measured at amortized cost \| Level 2
Fair Value
Financial liabilities measured at fair value	[3]	0	0
UBS AG \| Not measured at fair value \| Other financial liabilities measured at amortized cost \| Level 3
Fair Value
Financial liabilities measured at fair value	[3]	$ 100	$ 0

[1]	Net of bifurcated embedded derivatives, the fair value of which was not material for the periods presented.
[2]	Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented
[3]	Excludes lease liabilities.
[4]	Includes certain financial instruments where the carrying amount is a reasonable approximation of the fair value due to the instruments’ short-term nature (instruments that are receivable or payable on demand, or with a remaining maturity (excluding the effects of callable features) of three months or less)
[5]	Represents funding from UBS Group AG to UBS AG.
[6]	UBS AG has also recognized funding from UBS Group AG and its subsidiaries that is designated at fair value. Refer to Note 19b for more information.

Offsetting financial assets (De

Offsetting financial assets (Detail) - USD ($) $ in Billions		Dec. 31, 2020	Dec. 31, 2019
Netting recognized on the balance sheet
Gross assets before netting		$ 344.8	$ 313
Netting with gross liabilities	[1]	(97.5)	(98.9)
Net assets recognized on the balance sheet		247.3	214
Netting potential not recognized on the balance sheet
Financial liabilities	[2]	(139.3)	(103.8)
Collateral received	[2]	(89.8)	(96.1)
Assets after consideration of netting potential	[2]	18.3	14.1
Assets not subject to netting arrangements
Assets recognized on the balance sheet	[3]	99.7	99.3
Total assets
Total assets, after consideration of further netting potential		117.9	113.4
Total assets recognized on the balance sheet		346.9	313.3
Receivables from securities financing transactions
Netting recognized on the balance sheet
Gross assets before netting		70.3	83.2
Netting with gross liabilities	[1]	(13.4)	(14)
Net assets recognized on the balance sheet		57	69.2
Netting potential not recognized on the balance sheet
Financial liabilities	[2]	(1.7)	(1.2)
Collateral received	[2]	(55.3)	(68)
Assets after consideration of netting potential	[2]	0	0
Assets not subject to netting arrangements
Assets recognized on the balance sheet	[3]	17.3	15
Total assets
Total assets, after consideration of further netting potential		17.3	15
Total assets recognized on the balance sheet		74.2	84.2
Derivative financial instruments
Netting recognized on the balance sheet
Gross assets before netting		156.9	120.2
Netting with gross liabilities	[1]	(5)	(3.4)
Net assets recognized on the balance sheet		151.9	116.8
Netting potential not recognized on the balance sheet
Financial liabilities	[2]	(117.2)	(89.3)
Collateral received	[2]	(27.2)	(21.4)
Assets after consideration of netting potential	[2]	7.5	6.1
Assets not subject to netting arrangements
Assets recognized on the balance sheet	[3]	7.7	5
Total assets
Total assets, after consideration of further netting potential		15.2	11.1
Total assets recognized on the balance sheet		159.6	121.8
Cash collateral receivables on derivative instruments
Netting recognized on the balance sheet
Gross assets before netting	[4]	31.9	26.4
Netting with gross liabilities	[1],[4]	0	(4)
Net assets recognized on the balance sheet	[4]	31.9	22.4
Netting potential not recognized on the balance sheet
Financial liabilities	[2],[4]	(19.6)	(13.3)
Collateral received	[2],[4]	(1.5)	(1.1)
Assets after consideration of netting potential	[2],[4]	10.8	8
Assets not subject to netting arrangements
Assets recognized on the balance sheet	[3],[4]	0.8	0.9
Total assets
Total assets, after consideration of further netting potential	[4]	11.6	8.9
Total assets recognized on the balance sheet	[4]	32.7	23.3
Financial assets at fair value not held for trading
Netting recognized on the balance sheet
Gross assets before netting		85.6	83.1
Netting with gross liabilities	[1]	(79.1)	(77.5)
Net assets recognized on the balance sheet		6.5	5.6
Netting potential not recognized on the balance sheet
Financial liabilities	[2]	(0.8)	0
Collateral received	[2]	(5.8)	(5.6)
Assets after consideration of netting potential	[2]	0	0
Assets not subject to netting arrangements
Assets recognized on the balance sheet	[3]	73.9	78.3
Total assets
Total assets, after consideration of further netting potential		73.9	78.3
Total assets recognized on the balance sheet		80.4	83.9
of which: reverse repurchase agreements
Netting recognized on the balance sheet
Gross assets before netting		85.6	83
Netting with gross liabilities	[1]	(79.1)	(77.5)
Net assets recognized on the balance sheet		6.5	5.4
Netting potential not recognized on the balance sheet
Financial liabilities	[2]	(0.8)	0
Collateral received	[2]	(5.8)	(5.4)
Assets after consideration of netting potential	[2]	0	0
Assets not subject to netting arrangements
Assets recognized on the balance sheet	[3]	0.2	0.9
Total assets
Total assets, after consideration of further netting potential		0.2	0.9
Total assets recognized on the balance sheet		6.7	6.3
UBS AG
Netting recognized on the balance sheet
Gross assets before netting		344.8	313
Netting with gross liabilities	[1]	(97.5)	(98.9)
Net assets recognized on the balance sheet		247.3	214
Netting potential not recognized on the balance sheet
Financial liabilities	[2]	(139.3)	(103.8)
Collateral received	[2]	(89.8)	(96.1)
Assets after consideration of netting potential	[2]	18.3	14.1
Assets not subject to netting arrangements
Assets recognized on the balance sheet	[3]	99.3	99
Total assets
Total assets, after consideration of further netting potential		117.6	113.1
Total assets recognized on the balance sheet		346.6	313
UBS AG \| Receivables from securities financing transactions
Netting recognized on the balance sheet
Gross assets before netting		70.3	83.2
Netting with gross liabilities	[1]	(13.4)	(14)
Net assets recognized on the balance sheet		57	69.2
Netting potential not recognized on the balance sheet
Financial liabilities	[2]	(1.7)	(1.2)
Collateral received	[2]	(55.3)	(68)
Assets after consideration of netting potential	[2]	0	0
Assets not subject to netting arrangements
Assets recognized on the balance sheet	[3]	17.3	15
Total assets
Total assets, after consideration of further netting potential		17.3	15
Total assets recognized on the balance sheet		74.2	84.2
UBS AG \| Derivative financial instruments
Netting recognized on the balance sheet
Gross assets before netting		156.9	120.2
Netting with gross liabilities	[1]	(5)	(3.4)
Net assets recognized on the balance sheet		151.9	116.8
Netting potential not recognized on the balance sheet
Financial liabilities	[2]	(117.2)	(89.3)
Collateral received	[2]	(27.2)	(21.4)
Assets after consideration of netting potential	[2]	7.5	6.1
Assets not subject to netting arrangements
Assets recognized on the balance sheet	[3]	7.7	5
Total assets
Total assets, after consideration of further netting potential		15.2	11.1
Total assets recognized on the balance sheet		159.6	121.8
UBS AG \| Cash collateral receivables on derivative instruments
Netting recognized on the balance sheet
Gross assets before netting	[4]	31.9	26.4
Netting with gross liabilities	[1],[4]	0	(4)
Net assets recognized on the balance sheet	[4]	31.9	22.4
Netting potential not recognized on the balance sheet
Financial liabilities	[2],[4]	(19.6)	(13.3)
Collateral received	[2],[4]	(1.5)	(1.1)
Assets after consideration of netting potential	[2],[4]	10.8	8
Assets not subject to netting arrangements
Assets recognized on the balance sheet	[3],[4]	0.8	0.9
Total assets
Total assets, after consideration of further netting potential	[4]	11.6	8.9
Total assets recognized on the balance sheet	[4]	32.7	23.3
UBS AG \| Financial assets at fair value not held for trading
Netting recognized on the balance sheet
Gross assets before netting		85.6	83.1
Netting with gross liabilities	[1]	(79.1)	(77.5)
Net assets recognized on the balance sheet		6.5	5.6
Netting potential not recognized on the balance sheet
Financial liabilities	[2]	(0.8)	0
Collateral received	[2]	(5.8)	(5.6)
Assets after consideration of netting potential	[2]	0	0
Assets not subject to netting arrangements
Assets recognized on the balance sheet	[3]	73.5	78
Total assets
Total assets, after consideration of further netting potential		73.5	78
Total assets recognized on the balance sheet		80	83.6
UBS AG \| of which: reverse repurchase agreements
Netting recognized on the balance sheet
Gross assets before netting		85.6	83
Netting with gross liabilities	[1]	(79.1)	(77.5)
Net assets recognized on the balance sheet		6.5	5.4
Netting potential not recognized on the balance sheet
Financial liabilities	[2]	(0.8)	0
Collateral received	[2]	(5.8)	(5.4)
Assets after consideration of netting potential	[2]	0	0
Assets not subject to netting arrangements
Assets recognized on the balance sheet	[3]	0.2	0.9
Total assets
Total assets, after consideration of further netting potential		0.2	0.9
Total assets recognized on the balance sheet		$ 6.7	$ 6.3

[1]	The logic of the table results in amounts presented in the “Netting with gross liabilities” column corresponding directly to the amounts presented in the “Netting with gross assets” column in the liabilities table presented on the following page. Netting in this column for reverse repurchase agreements presented within the lines “Receivables from securities financing transactions” and “Financial assets at fair value not held for trading” taken together corresponds to the amounts presented for repurchase agreements in the “Payables from securities financing transactions” and “Other financial liabilities designated at fair value” lines in the liabilities table presented on the following page.
[2]	For the purpose of this disclosure, the amounts of financial instruments and cash collateral presented have been capped so as not to exceed the net amount of financial assets presented on the balance sheet; i.e., over-collateralization, where it exists, is not reflected in the table.
[3]	Includes assets not subject to enforceable netting arrangements and other out-of-scope items.
[4]	The net amount of Cash collateral receivables on derivative instruments recognized on the balance sheet includes certain OTC derivatives that are net settled on a daily basis either legally or in substance under IAS 32 principles and exchange-traded derivatives that are economically settled on a daily basis

Offsetting financial liabilitie

Offsetting financial liabilities (Detail) - USD ($) $ in Billions		Dec. 31, 2020	Dec. 31, 2019
Netting recognized on the balance sheet
Gross liabilities before netting		$ 297.8	$ 255.6
Netting with gross assets	[1]	(97.5)	(98.9)
Net liabilities recognized on the balance sheet		200.3	156.6
Netting potential not recognized on the balance sheet
Financial assets	[2]	(139.2)	(107)
Collateral pledged	[2]	(35.5)	(29)
Liabilities after consideration of netting potential	[2]	25.6	20.6
Liabilities not subject to netting arrangements
Liabilities recognized on the balance sheet	[3]	34.8	39.4
Total liabilities
Total liabilities after consideration of netting potential		60.4	60
Total liabilities recognized on the balance sheet		235.1	196
Payables from securities financing transactions
Netting recognized on the balance sheet
Gross liabilities before netting		18.2	19.8
Netting with gross assets	[1]	(13.3)	(14)
Net liabilities recognized on the balance sheet		4.9	5.8
Netting potential not recognized on the balance sheet
Financial assets	[2]	(1.6)	(0.8)
Collateral pledged	[2]	(3.3)	(5)
Liabilities after consideration of netting potential	[2]	0	0
Liabilities not subject to netting arrangements
Liabilities recognized on the balance sheet	[3]	1.4	2
Total liabilities
Total liabilities after consideration of netting potential		1.4	2
Total liabilities recognized on the balance sheet		6.3	7.8
Derivative financial instruments - liabilities
Netting recognized on the balance sheet
Gross liabilities before netting		157.1	118.1
Netting with gross assets	[1]	(5)	(3.4)
Net liabilities recognized on the balance sheet		152.1	114.8
Netting potential not recognized on the balance sheet
Financial assets	[2]	(117.2)	(89.3)
Collateral pledged	[2]	(23.9)	(16.8)
Liabilities after consideration of netting potential	[2]	10.9	8.6
Liabilities not subject to netting arrangements
Liabilities recognized on the balance sheet	[3]	9	6.1
Total liabilities
Total liabilities after consideration of netting potential		19.9	14.8
Total liabilities recognized on the balance sheet		161.1	120.9
Cash collateral payables on derivative instruments
Netting recognized on the balance sheet
Gross liabilities before netting	[4]	35.6	34.2
Netting with gross assets	[1],[4]	0	(4)
Net liabilities recognized on the balance sheet	[4]	35.6	30.1
Netting potential not recognized on the balance sheet
Financial assets	[2],[4]	(19.6)	(16.5)
Collateral pledged	[2],[4]	(2.1)	(1.7)
Liabilities after consideration of netting potential	[2],[4]	13.9	12
Liabilities not subject to netting arrangements
Liabilities recognized on the balance sheet	[3],[4]	1.7	1.3
Total liabilities
Total liabilities after consideration of netting potential	[4]	15.7	13.3
Total liabilities recognized on the balance sheet	[4]	37.3	31.4
Other financial liabilities designated at fair value
Netting recognized on the balance sheet
Gross liabilities before netting		87	83.5
Netting with gross assets	[1]	(79.2)	(77.6)
Net liabilities recognized on the balance sheet		7.8	5.9
Netting potential not recognized on the balance sheet
Financial assets	[2]	(0.8)	(0.4)
Collateral pledged	[2]	(6.3)	(5.6)
Liabilities after consideration of netting potential	[2]	0.7	0
Liabilities not subject to netting arrangements
Liabilities recognized on the balance sheet	[3]	22.6	30
Total liabilities
Total liabilities after consideration of netting potential		23.3	30
Total liabilities recognized on the balance sheet		30.4	35.9
of which: repurchase agreements
Netting recognized on the balance sheet
Gross liabilities before netting		86.2	83.1
Netting with gross assets	[1]	(79.2)	(77.6)
Net liabilities recognized on the balance sheet		7	5.5
Netting potential not recognized on the balance sheet
Financial assets	[2]	(0.8)	(0.4)
Collateral pledged	[2]	(6.3)	(5.2)
Liabilities after consideration of netting potential	[2]	0	0
Liabilities not subject to netting arrangements
Liabilities recognized on the balance sheet	[3]	0.3	0.2
Total liabilities
Total liabilities after consideration of netting potential		0.3	0.2
Total liabilities recognized on the balance sheet		7.3	5.7
UBS AG
Netting recognized on the balance sheet
Gross liabilities before netting		297.8	255.6
Netting with gross assets	[5]	(97.5)	(98.9)
Net liabilities recognized on the balance sheet		200.3	156.6
Netting potential not recognized on the balance sheet
Financial assets	[6]	(139.2)	(107)
Collateral pledged	[6]	(35.5)	(29)
Liabilities after consideration of netting potential	[6]	25.6	20.6
Liabilities not subject to netting arrangements
Liabilities recognized on the balance sheet	[7]	36.2	39.6
Total liabilities
Total liabilities after consideration of netting potential		61.7	60.2
Total liabilities recognized on the balance sheet		236.5	196.2
UBS AG \| Payables from securities financing transactions
Netting recognized on the balance sheet
Gross liabilities before netting		18.2	19.8
Netting with gross assets	[5]	(13.3)	(14)
Net liabilities recognized on the balance sheet		4.9	5.8
Netting potential not recognized on the balance sheet
Financial assets	[6]	(1.6)	(0.8)
Collateral pledged	[6]	(3.3)	(5)
Liabilities after consideration of netting potential	[6]	0	0
Liabilities not subject to netting arrangements
Liabilities recognized on the balance sheet	[7]	1.4	2
Total liabilities
Total liabilities after consideration of netting potential		1.4	2
Total liabilities recognized on the balance sheet		6.3	7.8
UBS AG \| Derivative financial instruments - liabilities
Netting recognized on the balance sheet
Gross liabilities before netting		157.1	118.1
Netting with gross assets	[5]	(5)	(3.4)
Net liabilities recognized on the balance sheet		152.1	114.8
Netting potential not recognized on the balance sheet
Financial assets	[6]	(117.2)	(89.3)
Collateral pledged	[6]	(23.9)	(16.8)
Liabilities after consideration of netting potential	[6]	10.9	8.6
Liabilities not subject to netting arrangements
Liabilities recognized on the balance sheet	[7]	9	6.1
Total liabilities
Total liabilities after consideration of netting potential		19.9	14.8
Total liabilities recognized on the balance sheet		161.1	120.9
UBS AG \| Cash collateral payables on derivative instruments
Netting recognized on the balance sheet
Gross liabilities before netting	[8]	35.6	34.2
Netting with gross assets	[5],[8]	0	(4)
Net liabilities recognized on the balance sheet	[8]	35.6	30.1
Netting potential not recognized on the balance sheet
Financial assets	[6],[8]	(19.6)	(16.5)
Collateral pledged	[6],[8]	(2.1)	(1.7)
Liabilities after consideration of netting potential	[6],[8]	13.9	12
Liabilities not subject to netting arrangements
Liabilities recognized on the balance sheet	[7],[8]	1.7	1.3
Total liabilities
Total liabilities after consideration of netting potential	[8]	15.7	13.3
Total liabilities recognized on the balance sheet	[8]	37.3	31.4
UBS AG \| Other financial liabilities designated at fair value
Netting recognized on the balance sheet
Gross liabilities before netting		87	83.5
Netting with gross assets	[5]	(79.2)	(77.6)
Net liabilities recognized on the balance sheet		7.8	5.9
Netting potential not recognized on the balance sheet
Financial assets	[6]	(0.8)	(0.4)
Collateral pledged	[6]	(6.3)	(5.6)
Liabilities after consideration of netting potential	[6]	0.7	0
Liabilities not subject to netting arrangements
Liabilities recognized on the balance sheet	[7]	24	30.2
Total liabilities
Total liabilities after consideration of netting potential		24.7	30.2
Total liabilities recognized on the balance sheet		31.8	36.2
UBS AG \| of which: repurchase agreements
Netting recognized on the balance sheet
Gross liabilities before netting		86.2	83.1
Netting with gross assets	[5]	(79.2)	(77.6)
Net liabilities recognized on the balance sheet		7	5.5
Netting potential not recognized on the balance sheet
Financial assets	[6]	(0.8)	(0.4)
Collateral pledged	[6]	(6.3)	(5.2)
Liabilities after consideration of netting potential	[6]	0	0
Liabilities not subject to netting arrangements
Liabilities recognized on the balance sheet	[7]	0.3	0.2
Total liabilities
Total liabilities after consideration of netting potential		0.3	0.2
Total liabilities recognized on the balance sheet		$ 7.3	$ 5.7

[1]	The logic of the table results in amounts presented in the “Netting with gross assets” column corresponding to the amounts presented in the “Netting with gross liabilities” column in the assets table presented on the previous page. Netting in this column for repurchase agreements presented within the lines “Payables from securities financing transactions” and “Other financial liabilities designated at fair value” taken together corresponds to the amounts presented for reverse repurchase agreements in the “Receivables from securities financing transactions” and “Financial assets at fair value not held for trading” lines in the assets table presented on the previous page.
[2]	For the purpose of this disclosure, the amounts of financial instruments and cash collateral presented have been capped so as not to exceed the net amount of financial liabilities presented on the balance sheet; i.e., over-collateralization, where it exists, is not reflected in the table.
[3]	Includes liabilities not subject to enforceable netting arrangements and other out-of-scope items.
[4]	The net amount of Cash collateral payables on derivative instruments recognized on the balance sheet includes certain OTC derivatives that are net settled on a daily basis either legally or in substance under IAS 32 principles and exchange-traded derivatives that are economically settled on a daily basis
[5]	The logic of the table results in amounts presented in the “Netting with gross assets” column corresponding to the amounts presented in the “Netting with gross liabilities” column in the assets table presented on the previous page. Netting in this column for repurchase agreements presented within the lines “Payables from securities financing transactions” and “Other financial liabilities designated at fair value” taken together corresponds to the amounts presented for reverse repurchase agreements in the “Receivables from securities financing transactions” and “Financial assets at fair value not held for trading” lines in the assets table presented on the previous page.
[6]	For the purpose of this disclosure, the amounts of financial instruments and cash collateral presented have been capped so as not to exceed the net amount of financial liabilities presented on the balance sheet; i.e., over-collateralization, where it exists, is not reflected in the table.
[7]	Includes liabilities not subject to enforceable netting arrangements and other out-of-scope items.
[8]	The net amount of Cash collateral payables on derivative instruments recognized on the balance sheet includes certain OTC derivatives that are net settled on a daily basis either legally or in substance under IAS 32 principles and exchange-traded derivatives that are economically settled on a daily basis

Restricted financial assets (De

Restricted financial assets (Detail) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Financial assets pledged as collateral
Financial assets at fair value held for trading		$ 64,367	$ 56,415
of which: assets pledged as collateral which may be sold or repledged by counterparties		47,098	41,285
Loans and advances to customers		20,361	18,399
of which: mortgage loans	[1]	18,191	18,399
Financial assets at fair value not held for trading		2,140	188
of which: assets pledged as collateral that may be sold or repledged by counterparties		2,140	188
Debt securities classified as Other financial assets measured at amortized cost		2,506	1,212
of which: assets pledged as collateral that may be sold or repledged by counterparties		2,506	1,212
Financial assets measured at fair value through other comprehensive income		149	0
of which: assets pledged as collateral that may be sold or repledged by counterparties		149	0
Total financial assets pledged as collateral	[2]	89,523	76,215
Other restricted financial assets
Loans and advances to banks		3,730	3,131
Financial assets at fair value held for trading		741	242
Cash collateral receivables on derivative instruments		3,765	2,986
Loans and advances to customers		756	620
Financial assets at fair value not held for trading		23,243	29,676
Financial assets measured at fair value through other comprehensive income		0	176
Other		110	379
Total other restricted financial assets		32,345	37,210
Total financial assets pledged and other restricted financial assets		121,868	113,425
Pledged mortgage loans that could be withdrawn or used		2,700	6,300
Assets placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes		1,300	600
UBS AG
Financial assets pledged as collateral
Financial assets at fair value held for trading		64,418	56,548
of which: assets pledged as collateral which may be sold or repledged by counterparties		47,098	41,285
Loans and advances to customers		20,361	18,399
of which: mortgage loans	[3]	18,191	18,399
Financial assets at fair value not held for trading		2,140	188
of which: assets pledged as collateral that may be sold or repledged by counterparties		2,140	188
Debt securities classified as Other financial assets measured at amortized cost		2,506	1,212
of which: assets pledged as collateral that may be sold or repledged by counterparties		2,506	1,212
Financial assets measured at fair value through other comprehensive income		149	0
of which: assets pledged as collateral that may be sold or repledged by counterparties		149	0
Total financial assets pledged as collateral	[4]	89,574	76,347
Other restricted financial assets
Loans and advances to banks		3,730	2,353
Financial assets at fair value held for trading		741	242
Cash collateral receivables on derivative instruments		3,765	2,986
Loans and advances to customers		756	620
Financial assets at fair value not held for trading		22,917	29,368
Financial assets measured at fair value through other comprehensive income		0	176
Other		110	382
Total other restricted financial assets		32,019	36,126
Total financial assets pledged and other restricted financial assets		121,593	112,474
Pledged mortgage loans that could be withdrawn or used		2,700	6,300
Assets placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes		$ 1,300	$ 600

[1]	All related to mortgage loans that serve as collateral for existing liabilities toward Swiss central mortgage institutions and for existing covered bond issuances. Of these pledged mortgage loans, approximately USD 2.7 billion for 31 December 2020 (31 December 2019: approximately USD 6.3 billion) could be withdrawn or used for future liabilities or covered bond issuances without breaching existing collateral requirements
[2]	Does not include assets placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes (31 December 2020: USD 1.3 billion; 31 December 2019: USD 0.6 billion).
[3]	All related to mortgage loans that serve as collateral for existing liabilities toward Swiss central mortgage institutions and for existing covered bond issuances. Of these pledged mortgage loans, approximately USD 2.7 billion for 31 December 2020 (31 December 2019: approximately USD 6.3 billion) could be withdrawn or used for future liabilities or covered bond issuances without breaching existing collateral requirements
[4]	Does not include assets placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes (31 December 2020: USD 1.3 billion; 31 December 2019: USD 0.6 billion).

Restricted financial assets (Na

Restricted financial assets (Narrative) (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Restricted Financial Assets [Line Items]
Pledged mortgage loans serve as collateral for existing liabilities against Swiss central mortgage institutions and for existing covered bond issuances	$ 12,456	$ 11,206
UBS AG
Restricted Financial Assets [Line Items]
Pledged mortgage loans serve as collateral for existing liabilities against Swiss central mortgage institutions and for existing covered bond issuances	$ 12,456	$ 11,206

Transferred financial assets _4

Transferred financial assets that are not derecognized in their entirety (Detail) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Carrying amount of transferred assets	[1]	$ 51,893	$ 42,685
Carrying amount of associated liabilities recognized on balance sheet	[1]	22,363	17,548
Financial assets at fair value held for trading that may be sold or repledged by counterparties
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Carrying amount of transferred assets		47,098	41,285
Carrying amount of associated liabilities recognized on balance sheet		18,874	16,671
relating to securities lending and repurchase agreements in exchange for cash received
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Carrying amount of transferred assets		19,177	16,945
Carrying amount of associated liabilities recognized on balance sheet		18,874	16,671
relating to securities lending agreements in exchange for securities received
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Carrying amount of transferred assets		27,595	24,082
Carrying amount of associated liabilities recognized on balance sheet		0	0
relating to other financial asset transfers
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Carrying amount of transferred assets		326	258
Carrying amount of associated liabilities recognized on balance sheet		0	0
Financial assets at fair value not held for trading that may be sold or repledged by counterparties
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Carrying amount of transferred assets		2,140	188
Carrying amount of associated liabilities recognized on balance sheet		1,378	187
Debt securities classified as Other financial assets measured at amortized cost that may be sold or repledged by counterparties
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Carrying amount of transferred assets	[1]	2,506	1,212
Carrying amount of associated liabilities recognized on balance sheet	[1]	1,963	690
Financial assets measured at fair value through other comprehensive income that may be sold or repledged by counterparties
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Carrying amount of transferred assets		149	0
Carrying amount of associated liabilities recognized on balance sheet		148	0
UBS AG
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Carrying amount of transferred assets	[1]	51,893	42,685
Carrying amount of associated liabilities recognized on balance sheet	[1]	22,363	17,548
UBS AG \| Financial assets at fair value held for trading that may be sold or repledged by counterparties
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Carrying amount of transferred assets		47,098	41,285
Carrying amount of associated liabilities recognized on balance sheet		18,874	16,671
UBS AG \| relating to securities lending and repurchase agreements in exchange for cash received
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Carrying amount of transferred assets		19,177	16,945
Carrying amount of associated liabilities recognized on balance sheet		18,874	16,671
UBS AG \| relating to securities lending agreements in exchange for securities received
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Carrying amount of transferred assets		27,595	24,082
Carrying amount of associated liabilities recognized on balance sheet		0	0
UBS AG \| relating to other financial asset transfers
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Carrying amount of transferred assets		326	258
Carrying amount of associated liabilities recognized on balance sheet		0	0
UBS AG \| Financial assets at fair value not held for trading that may be sold or repledged by counterparties
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Carrying amount of transferred assets		2,140	188
Carrying amount of associated liabilities recognized on balance sheet		1,378	187
UBS AG \| Debt securities classified as Other financial assets measured at amortized cost that may be sold or repledged by counterparties
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Carrying amount of transferred assets	[1]	2,506	1,212
Carrying amount of associated liabilities recognized on balance sheet	[1]	1,963	690
UBS AG \| Financial assets measured at fair value through other comprehensive income that may be sold or repledged by counterparties
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Carrying amount of transferred assets		149	0
Carrying amount of associated liabilities recognized on balance sheet		$ 148	$ 0

[1]	Comparative information has been amended to include Debt securities classified as Other financial assets measured at amortized cost that may be sold or repledged by counterparties.

Transferred financial assets _5

Transferred financial assets that are not derecognized in their entirety (Narrative) (Detail)	12 Months Ended
	Dec. 31, 2020
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Proportion of transferred financial assets that were trading portfolio assets in exchange for cash	40.00%
Minimum haircut applied to transferred assets in securities lending and repurchase agreements	0.00%
Maximum haircut applied to transferred assets in securities lending and repurchase agreements	15.00%
UBS AG
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition [Line Items]
Proportion of transferred financial assets that were trading portfolio assets in exchange for cash	40.00%
Minimum haircut applied to transferred assets in securities lending and repurchase agreements	0.00%
Maximum haircut applied to transferred assets in securities lending and repurchase agreements	15.00%

Off-balance sheet assets rece_3

Off-balance sheet assets received (Detail) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Off Balance Sheet Assets Received [Line Items]
Fair value of assets received that can be sold or repledged		$ 500,689	$ 475,726
received as collateral under reverse repurchase, securities borrowing and lending arrangements, derivative and other transactions	[1]	487,904	466,045
received in unsecured borrowings		12,785	9,681
Thereof sold or repledged	[2]	367,258	350,477
in connection with financing activities		315,603	305,362
to satisfy commitments under short sale transactions		33,595	30,591
in connection with derivative and other transactions	[1]	18,059	14,524
Off balance sheet securities placed with central banks related to undrawn credit lines and for payment clearing and settlement purposes		18,900	19,600
UBS AG
Off Balance Sheet Assets Received [Line Items]
Fair value of assets received that can be sold or repledged		500,689	475,726
received as collateral under reverse repurchase, securities borrowing and lending arrangements, derivative and other transactions	[3]	487,904	466,045
received in unsecured borrowings		12,785	9,681
Thereof sold or repledged	[4]	367,258	351,327
in connection with financing activities		315,603	306,212
to satisfy commitments under short sale transactions		33,595	30,591
in connection with derivative and other transactions	[3]	18,059	14,524
Off balance sheet securities placed with central banks related to undrawn credit lines and for payment clearing and settlement purposes		$ 18,900	$ 19,600

[1]	Includes securities received as initial margin from its clients that UBS is required to remit to central counterparties, brokers and deposit banks through its exchange-traded derivative clearing and execution services
[2]	Does not include off-balance sheet securities (31 December 2020: USD 18.9 billion; 31 December 2019: USD 19.6 billion) placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes for which there are no associated liabilities or contingent liabilities.
[3]	Includes securities received as initial margin from its clients that UBS AG is required to remit to central counterparties, brokers and deposit banks through its exchange-traded derivative clearing and execution services
[4]	Does not include off-balance sheet securities (31 December 2020: USD 18.9 billion; 31 December 2019: USD 19.6 billion) placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes for which there are no associated liabilities or contingent liabilities.

Maturity analysis of financia_3

Maturity analysis of financial liabilities (Detail) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Financial liabilities recognized on balance sheet
Amounts due to banks, undiscounted cash flows	[1]	$ 11,100	$ 6,600
Payables from securities financing transactions, undiscounted cash flows	[1]	6,300	7,800
Cash collateral payables on derivative instruments, undiscounted cash flows	[1]	37,300	31,400
Customer deposits, undiscounted cash flows	[1]	524,900	448,900
Debt issued measured at amortized cost, undiscounted cash flows	[1],[2]	148,500	122,700
Other financial liabilities measured at amortized cost, undiscounted cash flows	[1]	8,900	9,000
of which: lease liabilities, undiscounted cash flow	[1]	4,500	4,600
Total financial liabilities measured at amortized cost, undiscounted cash flows	[1]	737,100	626,400
Financial liabilities at fair value held for trading	[1],[3],[4]	33,595	30,591
Derivative financial instruments	[1],[3],[5],[6]	161,102	120,880
Brokerage payables designated at fair value, undiscounted cash flows	[1]	38,700	37,200
Debt issued designated at fair value, undiscounted cash flows	[1],[7]	64,500	68,500
Other financial liabilities designated at fair value, undiscounted cash flows	[1]	30,900	36,100
Total financial liabilities measured at fair value through profit or loss, undiscounted cash flows	[1]	328,800	293,300
Total financial liabilities, undiscounted cash flows	[1]	1,065,900	919,800
Guarantees, commitments and forward starting transactions
Loan commitments	[8]	41,400	27,500
Guarantees		17,500	19,100
Forward starting transactions, reverse repurchase agreements and securities borrowing agreements	[8]	3,200	1,700
Total		62,200	48,300
Trading portfolio liabilities contractually due within one month		32,600	30,000
Trading portfolio liabilities contractually due between one month and one year		1,000	600
Trading portfolio liabilities contractually due between 1 and 5 years		0	0
Measured At Fair Value [Member]
Guarantees, commitments and forward starting transactions
Loan commitments and forward starting reverse repurchase agreements classified as derivatives		32	0
Due within 1 month
Financial liabilities recognized on balance sheet
Amounts due to banks, undiscounted cash flows	[1]	6,100	5,400
Payables from securities financing transactions, undiscounted cash flows	[1]	5,600	7,400
Cash collateral payables on derivative instruments, undiscounted cash flows	[1]	37,300	31,400
Customer deposits, undiscounted cash flows	[1]	512,800	423,000
Debt issued measured at amortized cost, undiscounted cash flows	[1],[2]	9,000	4,500
Other financial liabilities measured at amortized cost, undiscounted cash flows	[1]	4,500	4,500
of which: lease liabilities, undiscounted cash flow	[1]	100	100
Total financial liabilities measured at amortized cost, undiscounted cash flows	[1]	575,300	476,100
Financial liabilities at fair value held for trading	[1],[3],[4]	33,600	30,600
Derivative financial instruments	[1],[3],[6]	161,100	120,900
Brokerage payables designated at fair value, undiscounted cash flows	[1]	38,700	37,200
Debt issued designated at fair value, undiscounted cash flows	[1],[7]	21,900	21,300
Other financial liabilities designated at fair value, undiscounted cash flows	[1]	27,900	34,000
Total financial liabilities measured at fair value through profit or loss, undiscounted cash flows	[1]	283,200	244,000
Total financial liabilities, undiscounted cash flows	[1]	858,500	720,100
Guarantees, commitments and forward starting transactions
Loan commitments	[8]	40,500	26,800
Guarantees		17,500	19,100
Forward starting transactions, reverse repurchase agreements and securities borrowing agreements	[8]	3,200	1,600
Total		61,300	47,500
Due within 1 month \| Loan commitments and forward starting reverse repurchase agreements
Guarantees, commitments and forward starting transactions
Notional amounts of derivatives		31,300	26,600
Due between 1 and 3 months
Financial liabilities recognized on balance sheet
Amounts due to banks, undiscounted cash flows	[1]	2,400	300
Payables from securities financing transactions, undiscounted cash flows	[1]	400	100
Customer deposits, undiscounted cash flows	[1]	6,600	16,100
Debt issued measured at amortized cost, undiscounted cash flows	[1],[2]	8,300	5,300
Other financial liabilities measured at amortized cost, undiscounted cash flows	[1]	100	100
of which: lease liabilities, undiscounted cash flow	[1]	100	100
Total financial liabilities measured at amortized cost, undiscounted cash flows	[1]	17,900	22,000
Debt issued designated at fair value, undiscounted cash flows	[1],[7]	16,800	17,400
Other financial liabilities designated at fair value, undiscounted cash flows	[1]	600	400
Total financial liabilities measured at fair value through profit or loss, undiscounted cash flows	[1]	17,400	17,800
Total financial liabilities, undiscounted cash flows	[1]	35,300	39,900
Guarantees, commitments and forward starting transactions
Loan commitments	[8]	500	500
Total		500	500
Due between 3 and 12 months
Financial liabilities recognized on balance sheet
Amounts due to banks, undiscounted cash flows	[1]	2,100	400
Payables from securities financing transactions, undiscounted cash flows	[1]	300	300
Customer deposits, undiscounted cash flows	[1]	3,500	7,300
Debt issued measured at amortized cost, undiscounted cash flows	[1],[2]	41,900	30,500
Other financial liabilities measured at amortized cost, undiscounted cash flows	[1]	500	500
of which: lease liabilities, undiscounted cash flow	[1]	500	500
Total financial liabilities measured at amortized cost, undiscounted cash flows	[1]	48,200	38,900
Debt issued designated at fair value, undiscounted cash flows	[1],[7]	7,100	9,500
Other financial liabilities designated at fair value, undiscounted cash flows	[1]	600	500
Total financial liabilities measured at fair value through profit or loss, undiscounted cash flows	[1]	7,700	9,900
Total financial liabilities, undiscounted cash flows	[1]	56,000	48,800
Guarantees, commitments and forward starting transactions
Loan commitments	[8]	400	300
Forward starting transactions, reverse repurchase agreements and securities borrowing agreements	[8]		0
Total		400	300
Due between 1 and 5 years
Financial liabilities recognized on balance sheet
Amounts due to banks, undiscounted cash flows	[1]	500	500
Payables from securities financing transactions, undiscounted cash flows	[1]	0
Customer deposits, undiscounted cash flows	[1]	1,800	2,500
Debt issued measured at amortized cost, undiscounted cash flows	[1],[2]	53,700	46,300
Other financial liabilities measured at amortized cost, undiscounted cash flows	[1]	2,000	2,000
of which: lease liabilities, undiscounted cash flow	[1]	2,000	2,000
Total financial liabilities measured at amortized cost, undiscounted cash flows	[1]	58,000	51,300
Debt issued designated at fair value, undiscounted cash flows	[1],[7]	9,200	12,700
Other financial liabilities designated at fair value, undiscounted cash flows	[1]	700	400
Total financial liabilities measured at fair value through profit or loss, undiscounted cash flows	[1]	9,900	13,100
Total financial liabilities, undiscounted cash flows	[1]	67,900	64,500
Guarantees, commitments and forward starting transactions
Loan commitments	[8]	0	0
Total		0	0
Due after 5 years
Financial liabilities recognized on balance sheet
Amounts due to banks, undiscounted cash flows	[1]	0	0
Payables from securities financing transactions, undiscounted cash flows	[1]	0	0
Customer deposits, undiscounted cash flows	[1]	200	0
Debt issued measured at amortized cost, undiscounted cash flows	[1],[2]	35,600	36,000
Other financial liabilities measured at amortized cost, undiscounted cash flows	[1]	1,800	2,000
of which: lease liabilities, undiscounted cash flow	[1]	1,800	2,000
Total financial liabilities measured at amortized cost, undiscounted cash flows	[1]	37,700	38,100
Debt issued designated at fair value, undiscounted cash flows	[1],[7]	9,500	7,600
Other financial liabilities designated at fair value, undiscounted cash flows	[1]	1,100	900
Total financial liabilities measured at fair value through profit or loss, undiscounted cash flows	[1]	10,600	8,500
Total financial liabilities, undiscounted cash flows	[1]	48,300	46,600
Guarantees, commitments and forward starting transactions
Total		0	0
UBS AG
Financial liabilities recognized on balance sheet
Amounts due to banks, undiscounted cash flows	[1]	11,100	6,600
Payables from securities financing transactions, undiscounted cash flows	[1]	6,300	7,800
Cash collateral payables on derivative instruments, undiscounted cash flows	[1]	37,300	31,400
Customer deposits, undiscounted cash flows	[1]	528,200	451,200
Funding from UBS Group AG and its subsidiaries, undiscounted cash flows	[1],[2]	60,500	56,200
Debt issued measured at amortized cost, undiscounted cash flows	[1],[2]	88,200	66,500
Other financial liabilities measured at amortized cost, undiscounted cash flows	[1]	9,600	9,600
of which: lease liabilities, undiscounted cash flow	[1]	4,400	4,500
Total financial liabilities measured at amortized cost, undiscounted cash flows	[1]	741,300	629,300
Financial liabilities at fair value held for trading	[1],[3],[4]	33,595	30,591
Derivative financial instruments	[1],[3],[6],[9]	161,102	120,880
Brokerage payables designated at fair value, undiscounted cash flows	[1]	38,700	37,200
Debt issued designated at fair value, undiscounted cash flows	[1],[7]	61,000	68,000
Other financial liabilities designated at fair value, undiscounted cash flows	[1]	34,300	36,100
Total financial liabilities measured at fair value through profit or loss, undiscounted cash flows	[1]	328,800	292,900
Total financial liabilities, undiscounted cash flows	[1]	1,070,000	922,200
Guarantees, commitments and forward starting transactions
Loan commitments	[8]	41,400	27,500
Guarantees		17,500	19,100
Forward starting transactions, reverse repurchase agreements and securities borrowing agreements	[8]	3,200	1,700
Total		62,200	48,300
Trading portfolio liabilities contractually due within one month		32,600	30,000
Trading portfolio liabilities contractually due between one month and one year		1,000	600
Trading portfolio liabilities contractually due between 1 and 5 years		0	0
UBS AG \| Measured At Fair Value [Member]
Guarantees, commitments and forward starting transactions
Loan commitments and forward starting reverse repurchase agreements classified as derivatives		32	0
UBS AG \| Due within 1 month
Financial liabilities recognized on balance sheet
Amounts due to banks, undiscounted cash flows	[1]	6,100	5,400
Payables from securities financing transactions, undiscounted cash flows	[1]	5,600	7,400
Cash collateral payables on derivative instruments, undiscounted cash flows	[1]	37,300	31,400
Customer deposits, undiscounted cash flows	[1]	514,000	423,900
Funding from UBS Group AG and its subsidiaries, undiscounted cash flows	[1],[2]	100	0
Debt issued measured at amortized cost, undiscounted cash flows	[1],[2]	8,800	4,300
Other financial liabilities measured at amortized cost, undiscounted cash flows	[1]	5,300	5,200
of which: lease liabilities, undiscounted cash flow	[1]	100	100
Total financial liabilities measured at amortized cost, undiscounted cash flows	[1]	577,200	477,600
Financial liabilities at fair value held for trading	[1],[3],[4]	33,600	30,600
Derivative financial instruments	[1],[3],[6]	161,100	120,900
Brokerage payables designated at fair value, undiscounted cash flows	[1]	38,700	37,200
Debt issued designated at fair value, undiscounted cash flows	[1],[7]	21,900	21,300
Other financial liabilities designated at fair value, undiscounted cash flows	[1]	27,900	34,000
Total financial liabilities measured at fair value through profit or loss, undiscounted cash flows	[1]	283,200	244,000
Total financial liabilities, undiscounted cash flows	[1]	860,300	721,600
Guarantees, commitments and forward starting transactions
Loan commitments	[8]	40,500	26,800
Guarantees		17,500	19,100
Forward starting transactions, reverse repurchase agreements and securities borrowing agreements	[8]	3,200	1,600
Total		61,300	47,500
UBS AG \| Due within 1 month \| Loan commitments and forward starting reverse repurchase agreements
Guarantees, commitments and forward starting transactions
Notional amounts of derivatives		31,300	26,600
UBS AG \| Due between 1 and 3 months
Financial liabilities recognized on balance sheet
Amounts due to banks, undiscounted cash flows	[1]	2,400	300
Payables from securities financing transactions, undiscounted cash flows	[1]	400	100
Customer deposits, undiscounted cash flows	[1]	7,800	16,500
Funding from UBS Group AG and its subsidiaries, undiscounted cash flows	[1],[2]	300	200
Debt issued measured at amortized cost, undiscounted cash flows	[1],[2]	7,800	4,700
Other financial liabilities measured at amortized cost, undiscounted cash flows	[1]	100	100
of which: lease liabilities, undiscounted cash flow	[1]	100	100
Total financial liabilities measured at amortized cost, undiscounted cash flows	[1]	18,900	22,000
Debt issued designated at fair value, undiscounted cash flows	[1],[7]	16,800	17,400
Other financial liabilities designated at fair value, undiscounted cash flows	[1]	600	400
Total financial liabilities measured at fair value through profit or loss, undiscounted cash flows	[1]	17,400	17,800
Total financial liabilities, undiscounted cash flows	[1]	36,300	39,900
Guarantees, commitments and forward starting transactions
Loan commitments	[8]	500	500
Total		500	500
UBS AG \| Due between 3 and 12 months
Financial liabilities recognized on balance sheet
Amounts due to banks, undiscounted cash flows	[1]	2,100	400
Payables from securities financing transactions, undiscounted cash flows	[1]	300	300
Customer deposits, undiscounted cash flows	[1]	3,500	7,300
Funding from UBS Group AG and its subsidiaries, undiscounted cash flows	[1],[2]	6,200	2,300
Debt issued measured at amortized cost, undiscounted cash flows	[1],[2]	38,200	27,800
Other financial liabilities measured at amortized cost, undiscounted cash flows	[1]	500	500
of which: lease liabilities, undiscounted cash flow	[1]	500	500
Total financial liabilities measured at amortized cost, undiscounted cash flows	[1]	50,700	38,500
Debt issued designated at fair value, undiscounted cash flows	[1],[7]	7,100	9,500
Other financial liabilities designated at fair value, undiscounted cash flows	[1]	600	500
Total financial liabilities measured at fair value through profit or loss, undiscounted cash flows	[1]	7,700	9,900
Total financial liabilities, undiscounted cash flows	[1]	58,400	48,400
Guarantees, commitments and forward starting transactions
Loan commitments	[8]	400	300
Forward starting transactions, reverse repurchase agreements and securities borrowing agreements	[8]		0
Total		400	300
UBS AG \| Due between 1 and 5 years
Financial liabilities recognized on balance sheet
Amounts due to banks, undiscounted cash flows	[1]	500	500
Customer deposits, undiscounted cash flows	[1]	2,800	3,500
Funding from UBS Group AG and its subsidiaries, undiscounted cash flows	[1],[2]	29,100	29,000
Debt issued measured at amortized cost, undiscounted cash flows	[1],[2]	24,500	20,700
Other financial liabilities measured at amortized cost, undiscounted cash flows	[1]	2,000	1,900
of which: lease liabilities, undiscounted cash flow	[1]	2,000	1,900
Total financial liabilities measured at amortized cost, undiscounted cash flows	[1]	58,800	55,600
Debt issued designated at fair value, undiscounted cash flows	[1],[7]	9,200	12,700
Other financial liabilities designated at fair value, undiscounted cash flows	[1]	700	400
Total financial liabilities measured at fair value through profit or loss, undiscounted cash flows	[1]	9,800	13,100
Total financial liabilities, undiscounted cash flows	[1]	68,600	68,700
Guarantees, commitments and forward starting transactions
Loan commitments	[8]	0	0
Total		0	0
UBS AG \| Due after 5 years
Financial liabilities recognized on balance sheet
Amounts due to banks, undiscounted cash flows	[1]	0	0
Payables from securities financing transactions, undiscounted cash flows	[1]	0	0
Customer deposits, undiscounted cash flows	[1]	200	0
Funding from UBS Group AG and its subsidiaries, undiscounted cash flows	[1],[2]	24,800	24,600
Debt issued measured at amortized cost, undiscounted cash flows	[1],[2]	8,900	9,000
Other financial liabilities measured at amortized cost, undiscounted cash flows	[1]	1,800	2,000
of which: lease liabilities, undiscounted cash flow	[1]	1,800	2,000
Total financial liabilities measured at amortized cost, undiscounted cash flows	[1]	35,800	35,600
Debt issued designated at fair value, undiscounted cash flows	[1],[7]	6,000	7,100
Other financial liabilities designated at fair value, undiscounted cash flows	[1]	4,600	900
Total financial liabilities measured at fair value through profit or loss, undiscounted cash flows	[1]	10,600	8,000
Total financial liabilities, undiscounted cash flows	[1]	46,400	43,600
Guarantees, commitments and forward starting transactions
Total		$ 0	$ 0

[1]	Except for financial liabilities at fair value held for trading and derivative financial instruments (see footnote 3), the amounts presented generally represent undiscounted cash flows of future interest and principal payments
[2]	The time-bucket Due after 5 years includes perpetual loss-absorbing additional tier 1 capital instruments.
[3]	Carrying amount is fair value. Management believes that this best represents the cash flows that would have to be paid if these positions had to be settled or closed out.
[4]	Contractual maturities of financial liabilities at fair value held for trading are: USD 32.6 billion due within 1 month (2019: USD 30 billion), USD 1.0 billion due between 1 month and 1 year (2019: USD 0.6 billion) and USD 0 billion due between 1 and 5 years (2019: USD 0 billion). 5 Includes USD 32 million (2019: 0 million) related to fair values of derivative loan commitments and forward starting reverse repurchase agreements classified as derivatives, presented within “Due within 1 month”. The full contractual committed amount of USD 31.3 billion (2019: USD 26.6 billion) is presented in Note 10 under notional amounts.
[5]	Derivative financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of the entity and all of the counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. Refer to Note 22 for more information on netting arrangements.
[6]	Includes USD 32 million (2019: 0 million) related to fair values of derivative loan commitments and forward starting reverse repurchase agreements classified as derivatives, presented within “Due within 1 month”. The full contractual committed amount of USD 31.3 billion (2019: USD 26.6 billion) is presented in Note 10 under notional amounts.
[7]	Future interest payments on variable-rate liabilities are determined by reference to the applicable interest rate prevailing as of the reporting date. Future principal payments that are variable are determined by reference to the conditions existing at the reporting date.
[8]	Excludes derivative loan commitments and forward starting reverse repurchase agreements measured at fair value. The committed amounts of these instruments were previously presented in the former Note 34 (refer to the “Consolidated financial statements” section of the Annual Report 2019 for more information). Starting with this report, they are presented in Note 10 under notional amounts and prior-period information in this table has been amended to ensure comparability.
[9]	Financial assets and liabilities are presented net on the balance sheet if UBS AG has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of the entity and all of the counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. Refer to Note 25 for more information on netting arrangements.

Hedge accounting (Narrative) (D

Hedge accounting (Narrative) (Detail)	12 Months Ended
Hedge accounting (Narrative) (Detail)	Dec. 31, 2020
Disclosure Of Detailed Information About Hedging Instruments [Line Items]
Maximum maturity of aggregate principal balances and interest cash flows that are hedged with interest rate swaps	10 years
UBS AG [Member]
Disclosure Of Detailed Information About Hedging Instruments [Line Items]
Maximum maturity of aggregate principal balances and interest cash flows that are hedged with interest rate swaps	10 years

Hedge accounting (Detail 1)

Hedge accounting (Detail 1) - USD ($) $ in Millions		12 Months Ended
Hedge accounting (Detail 1) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Fair value hedges \| Interest rate risk
Disclosure Of Hedge Accounting [Line Items]
Notional amount		$ 80,759	$ 69,750
Derivative financial assets			33
Derivative financial liabilities		12	14
Changes in fair value of hedging instruments	[1]	1,231	1,389
Changes in fair value of hedged items	[1]	(1,247)	(1,376)
Hedge ineffectiveness recognized in Other net income from financial instruments measured at fair value through profit or loss		(16)	13
Fair value hedges \| Foreign exchange risk
Disclosure Of Hedge Accounting [Line Items]
Notional amount	[2],[3]	21,555
Derivative financial assets	[2],[3]	449
Derivative financial liabilities	[2],[3]	7
Changes in fair value of hedging instruments	[1],[2],[3]	(1,735)
Changes in fair value of hedged items	[1],[2],[3]	1,715
Hedge ineffectiveness recognized in Other net income from financial instruments measured at fair value through profit or loss	[2],[3]	(20)
Cash flow hedges \| Interest rate risk
Disclosure Of Hedge Accounting [Line Items]
Notional amount		72,732	69,443
Derivative financial assets		18	16
Changes in fair value of hedging instruments	[1]	2,213	1,639
Changes in fair value of hedged items	[1]	(2,012)	(1,571)
Hedge ineffectiveness recognized in Other net income from financial instruments measured at fair value through profit or loss		201	68
Hedges of net investments in foreign operations \| Foreign exchange risk
Disclosure Of Hedge Accounting [Line Items]
Notional amount		13,775	11,992
Derivative financial assets		3	9
Derivative financial liabilities		194	171
Changes in fair value of hedging instruments	[1]	(937)	(142)
Changes in fair value of hedged items	[1]	936	134
Hedge ineffectiveness recognized in Other net income from financial instruments measured at fair value through profit or loss		(2)	(8)
UBS AG \| Fair value hedges \| Interest rate risk
Disclosure Of Hedge Accounting [Line Items]
Notional amount		80,759	69,750
Derivative financial assets			33
Derivative financial liabilities		12	14
Changes in fair value of hedging instruments	[1]	1,231	1,389
Changes in fair value of hedged items	[1]	(1,247)	(1,376)
Hedge ineffectiveness recognized in Other net income from financial instruments measured at fair value through profit or loss		(16)	13
UBS AG \| Fair value hedges \| Foreign exchange risk
Disclosure Of Hedge Accounting [Line Items]
Notional amount	[2],[3]	21,555
Derivative financial assets	[2],[3]	449
Derivative financial liabilities	[2],[3]	7
Changes in fair value of hedging instruments	[1],[2],[3]	(1,735)
Changes in fair value of hedged items	[1],[2],[3]	1,715
Hedge ineffectiveness recognized in Other net income from financial instruments measured at fair value through profit or loss	[2],[3]	(20)
UBS AG \| Cash flow hedges \| Interest rate risk
Disclosure Of Hedge Accounting [Line Items]
Notional amount		72,732	69,443
Derivative financial assets		18	16
Changes in fair value of hedging instruments	[1]	2,213	1,639
Changes in fair value of hedged items	[1]	(2,012)	(1,571)
Hedge ineffectiveness recognized in Other net income from financial instruments measured at fair value through profit or loss		201	68
UBS AG \| Hedges of net investments in foreign operations \| Foreign exchange risk
Disclosure Of Hedge Accounting [Line Items]
Notional amount		13,634	11,875
Derivative financial assets		3	9
Derivative financial liabilities		193	170
Changes in fair value of hedging instruments	[1]	(939)	(153)
Changes in fair value of hedged items	[1]	938	144
Hedge ineffectiveness recognized in Other net income from financial instruments measured at fair value through profit or loss		$ (2)	$ (8)

[1]	Amounts used as the basis for recognizing hedge ineffectiveness for the period
[2]	Fair value hedges of foreign exchange risk started on 1 January 2020.
[3]	The foreign currency basis spread of cross-currency swaps designated as hedging derivatives is excluded from the hedge accounting designation and accounted for as a cost of hedging with amounts deferred in Other comprehensive income within Equity.

Hedge accounting (Detail 2)

Hedge accounting (Detail 2) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Interest rate risk
Hedged items: Debt issued measured at amortized cost
Carrying amount of designated debt		$ 70,429	$ 67,379
of which: accumulated amount of fair value hedge adjustment		2,401	1,099
Hedged items: Other financial assets measured at amortized cost - debt securities
Carrying amount of designated debt securities		3,242
of which: accumulated amount of fair value hedge adjustment		(38)
Hedged items: Loans and advances to customers designated in fair value hedges of portfolio interest rate risk under IAS 39
Carrying amount of designated loans		10,374	4,494
of which: accumulated amount of fair value hedge adjustment on the portfolio that was subject to hedge accounting	[1]	100	117
of which: accumulated amount of fair value hedge adjustment, subject to amortization attributable to the portion of the portfolio that ceased to be part of hedge accounting	[1]	111	172
Foreign exchange risk
Hedged items: Debt issued measured at amortized cost
Carrying amount of designated debt	[2]	21,555
UBS AG \| Interest rate risk
Hedged items: Debt issued measured at amortized cost
Carrying amount of designated debt		24,247	26,120
of which: accumulated amount of fair value hedge adjustment		761	574
Hedged items: Other financial assets measured at amortized cost - debt securities
Carrying amount of designated debt securities		3,242
of which: accumulated amount of fair value hedge adjustment		(38)
Hedged items: Loans and advances to customers designated in fair value hedges of portfolio interest rate risk under IAS 39
Carrying amount of designated loans		10,374	4,494
of which: accumulated amount of fair value hedge adjustment on the portfolio that was subject to hedge accounting	[1]	100	117
of which: accumulated amount of fair value hedge adjustment, subject to amortization attributable to the portion of the portfolio that ceased to be part of hedge accounting	[1]	111	172
Hedged items: funding from UBS Group AG and its subsidiaries
Carrying amount		46,182	41,258
of which: accumulated amount of fair value hedge adjustment		1,640	$ 525
UBS AG \| Foreign exchange risk
Hedged items: Debt issued measured at amortized cost
Carrying amount of designated debt	[2]	10,889
Hedged items: funding from UBS Group AG and its subsidiaries
Carrying amount	[2]	$ 10,666

[1]	Amounts presented within Other financial assets measured at amortized cost and Other financial liabilities measured at amortized cost
[2]	Fair value hedges of foreign exchange risk started on 1 January 2020.

Hedge accounting (Detail 3)

Hedge accounting (Detail 3) - USD ($) $ in Billions		Dec. 31, 2020	Dec. 31, 2019
Interest rate swaps
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments		$ 70	$ 65
Interest rate swaps \| Due within 1 month
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments		0
Interest rate swaps \| Due between 1 and 3 months
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments		4	3
Interest rate swaps \| Due between 3 and 12 months
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments		9	9
Interest rate swaps \| Due between 1 and 5 years
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments		46	40
Interest rate swaps \| Due after 5 years
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments		12	14
Cross-currency swaps
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments	[1]	22
Cross-currency swaps \| Due within 1 month
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments	[1]	0
Cross-currency swaps \| Due between 1 and 3 months
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments	[1]	0
Cross-currency swaps \| Due between 3 and 12 months
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments	[1]	4
Cross-currency swaps \| Due between 1 and 5 years
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments	[1]	16
Cross-currency swaps \| Due after 5 years
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments	[1]	2
UBS AG \| Interest rate swaps
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments		70	65
UBS AG \| Interest rate swaps \| Due within 1 month
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments		0
UBS AG \| Interest rate swaps \| Due between 1 and 3 months
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments		4	3
UBS AG \| Interest rate swaps \| Due between 3 and 12 months
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments		9	9
UBS AG \| Interest rate swaps \| Due between 1 and 5 years
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments		46	40
UBS AG \| Interest rate swaps \| Due after 5 years
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments		12	$ 14
UBS AG \| Cross-currency swaps
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments	[1]	22
UBS AG \| Cross-currency swaps \| Due within 1 month
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments	[1]	0
UBS AG \| Cross-currency swaps \| Due between 1 and 3 months
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments	[1]	0
UBS AG \| Cross-currency swaps \| Due between 3 and 12 months
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments	[1]	4
UBS AG \| Cross-currency swaps \| Due between 1 and 5 years
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments	[1]	16
UBS AG \| Cross-currency swaps \| Due after 5 years
Profile Of The Timing Of The Nominal Amount Of The Hedging Instrument [Line Items]
Hedging instruments	[1]	$ 2

[1]	Fair value hedges of foreign exchange risk started on 1 January 2020.

Hedge accounting (Detail 4)

Hedge accounting (Detail 4) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Cash Flow Hedge Reserves [Line Items]
Cash flow hedge reserve amounts related to hedge relationships for which hedge accounting continues to be applied	$ 2,560	$ 1,596
Cash flow hedge reserve amounts related to hedge relationships for which hedge accounting is no longer applied	296	(43)
Total Other comprehensive income recognized directly in equity related to cash flow hedges, on a pre-tax basis	2,856	1,553
UBS AG
Cash Flow Hedge Reserves [Line Items]
Cash flow hedge reserve amounts related to hedge relationships for which hedge accounting continues to be applied	2,560	1,596
Cash flow hedge reserve amounts related to hedge relationships for which hedge accounting is no longer applied	296	(43)
Total Other comprehensive income recognized directly in equity related to cash flow hedges, on a pre-tax basis	$ 2,856	$ 1,554

Hedge accounting (Detail 5)

Hedge accounting (Detail 5) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Foreign Currency Basis Spreads Reserves [Line Items]
Foreign currency translation reserve amounts related to hedge relationships for which hedge accounting continues to be applied	$ (559)	$ 386
Foreign currency translation reserve amounts related to hedge relationships for which hedge accounting is no longer applied	268	257
Total other comprehensive income recognized directly in equity related to hedging instruments in net investment hedges, on a pre-tax basis	(291)	643
UBS AG
Foreign Currency Basis Spreads Reserves [Line Items]
Foreign currency translation reserve amounts related to hedge relationships for which hedge accounting continues to be applied		377
Foreign currency translation reserve amounts related to hedge relationships for which hedge accounting is no longer applied		257
Total other comprehensive income recognized directly in equity related to hedging instruments in net investment hedges, on a pre-tax basis	$ (302)	$ 634

Hedge accounting (Detail 6)

Hedge accounting (Detail 6) - Interest rate risk - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Fair value hedges
Nominal And Carrying Amount Of Cash Flow Hedges Of Forecast Transactions [Line Items]
Derivative financial assets		$ 33
Derivative financial liabilities	$ 12	14
Fair value hedges \| Interest rate benchmark reform exceptions effect on cash flow hedges
Nominal And Carrying Amount Of Cash Flow Hedges Of Forecast Transactions [Line Items]
Nominal amount	37,146	26,355
Derivative financial assets	1	1
Derivative financial liabilities	(12)	(14)
Cash flow hedges
Nominal And Carrying Amount Of Cash Flow Hedges Of Forecast Transactions [Line Items]
Derivative financial assets	18	16
Cash flow hedges \| Interest rate benchmark reform exceptions effect on cash flow hedges
Nominal And Carrying Amount Of Cash Flow Hedges Of Forecast Transactions [Line Items]
Nominal amount	11,179	5,895
Derivative financial assets	0	0
Derivative financial liabilities	0	0
UBS AG \| Fair value hedges
Nominal And Carrying Amount Of Cash Flow Hedges Of Forecast Transactions [Line Items]
Derivative financial assets		33
Derivative financial liabilities	12	14
UBS AG \| Fair value hedges \| Interest rate benchmark reform exceptions effect on cash flow hedges
Nominal And Carrying Amount Of Cash Flow Hedges Of Forecast Transactions [Line Items]
Nominal amount	37,146	26,355
Derivative financial assets	1	1
Derivative financial liabilities	(12)	(14)
UBS AG \| Cash flow hedges
Nominal And Carrying Amount Of Cash Flow Hedges Of Forecast Transactions [Line Items]
Derivative financial assets	18	16
UBS AG \| Cash flow hedges \| Interest rate benchmark reform exceptions effect on cash flow hedges
Nominal And Carrying Amount Of Cash Flow Hedges Of Forecast Transactions [Line Items]
Nominal amount	11,179	5,895
Derivative financial assets	0	0
Derivative financial liabilities	$ 0	$ 0

Post-employment benefit plans_2

Post-employment benefit plans (Detail 1) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Post-employment Benefit Expense [Line Items]
Net periodic expenses for defined benefit plans		$ 502	$ 461	$ 188
Expenses for defined contribution plans		343	326	268
Total post-employment benefit plan expenses		845	787	457	[1]
of which: UK plans
Post-employment Benefit Expense [Line Items]
Expenses for defined contribution plans		88	82	80
of which: US plan
Post-employment Benefit Expense [Line Items]
Expenses for defined contribution plans		190	173	127
of which: remaining plans
Post-employment Benefit Expense [Line Items]
Expenses for defined contribution plans		65	71	61
of which: related to major plans
Post-employment Benefit Expense [Line Items]
Net periodic expenses for defined benefit plans		479	440	186
of which: Swiss pension plan
Post-employment Benefit Expense [Line Items]
Net periodic expenses for defined benefit plans	[2]	459	417	153
Changes to the Swiss pension plan in 2018 resulted in a pre-tax gain related to past service				241
of which: UK pension plan
Post-employment Benefit Expense [Line Items]
Net periodic expenses for defined benefit plans		3	3	11
of which: US and German pension plans
Post-employment Benefit Expense [Line Items]
Net periodic expenses for defined benefit plans		18	21	22
of which: related to remaining plans and other expenses
Post-employment Benefit Expense [Line Items]
Net periodic expenses for defined benefit plans	[3]	23	21	2
UBS AG
Post-employment Benefit Expense [Line Items]
Net periodic expenses for defined benefit plans		306	291	140
Expenses for defined contribution plans		291	278	223
Total post-employment benefit plan expenses		597	569	363	[4]
UBS AG \| of which: UK plans
Post-employment Benefit Expense [Line Items]
Expenses for defined contribution plans		36	34	35
UBS AG \| of which: US plan
Post-employment Benefit Expense [Line Items]
Expenses for defined contribution plans		190	173	127
UBS AG \| of which: remaining plans
Post-employment Benefit Expense [Line Items]
Expenses for defined contribution plans		65	71	61
UBS AG \| of which: related to major plans
Post-employment Benefit Expense [Line Items]
Net periodic expenses for defined benefit plans		289	271	141
UBS AG \| of which: Swiss pension plan
Post-employment Benefit Expense [Line Items]
Net periodic expenses for defined benefit plans	[2]	269	248	108
UBS AG \| of which: UK pension plan
Post-employment Benefit Expense [Line Items]
Net periodic expenses for defined benefit plans		3	3	11
UBS AG \| of which: US and German pension plans
Post-employment Benefit Expense [Line Items]
Net periodic expenses for defined benefit plans		18	21	22
UBS AG \| of which: related to remaining plans and other expenses
Post-employment Benefit Expense [Line Items]
Net periodic expenses for defined benefit plans	[3]	$ 17	$ 19	$ (1)

[1]	Changes to the pension fund of UBS in Switzerland announced in 2018 resulted in a reduction in the pension obligation recognized by UBS. As a consequence, a pre-tax gain of USD 241 million was recognized in the income statement in 2018, with no overall effect on total equity. Refer to Note 26 for more information.
[2]	Changes to the Swiss pension plan announced in 2018 resulted in a pre-tax gain of USD 241 million related to past service. Refer to Note 26a for more information on these changes. 3 Other expenses include differences between actual and estimated performance award accruals. 4 Refer to Note 26b for more information. 5 Refer to Note 6.
[3]	Other expenses include differences between actual and estimated performance award accruals.
[4]	Changes to the pension fund of UBS AG in Switzerland announced in 2018 resulted in a reduction in the pension obligation recognized by UBS AG. As a consequence, a pre-tax gain of USD 132 million was recognized in the income statement in 2018, with no overall effect on total equity. Refer to Note 26 for more information.

Post-employment benefit plans_3

Post-employment benefit plans (Detail 2) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Post-employment Benefit Expense [Line Items]
Gains / (losses) recognized in other comprehensive income, before tax	$ (327)	$ (146)	$ (220)
Tax (expense) / benefit relating to defined benefit plans recognized in other comprehensive income	109	(41)	276
Gains / (losses) recognized in other comprehensive income, net of tax	(218)	(186)	56
of which: related to major plans
Post-employment Benefit Expense [Line Items]
Gains / (losses) recognized in other comprehensive income, before tax	(323)	(135)	(230)
of which: Swiss pension plan
Post-employment Benefit Expense [Line Items]
Gains / (losses) recognized in other comprehensive income, before tax	(276)	(22)	(352)
of which: UK pension plan
Post-employment Benefit Expense [Line Items]
Gains / (losses) recognized in other comprehensive income, before tax	(61)	(78)	130
of which: US and German pension plans
Post-employment Benefit Expense [Line Items]
Gains / (losses) recognized in other comprehensive income, before tax	14	(35)	(8)
Remaining plans
Post-employment Benefit Expense [Line Items]
Gains / (losses) recognized in other comprehensive income, before tax	(4)	(10)	9
UBS AG
Post-employment Benefit Expense [Line Items]
Gains / (losses) recognized in other comprehensive income, before tax	(222)	(129)	(70)
Tax (expense) / benefit relating to defined benefit plans recognized in other comprehensive income	88	(41)	245
Gains / (losses) recognized in other comprehensive income, net of tax	(134)	(170)	175
UBS AG \| of which: related to major plans
Post-employment Benefit Expense [Line Items]
Gains / (losses) recognized in other comprehensive income, before tax	(219)	(128)	(79)
UBS AG \| of which: Swiss pension plan
Post-employment Benefit Expense [Line Items]
Gains / (losses) recognized in other comprehensive income, before tax	(172)	(15)	(201)
UBS AG \| of which: UK pension plan
Post-employment Benefit Expense [Line Items]
Gains / (losses) recognized in other comprehensive income, before tax	(61)	(78)	130
UBS AG \| of which: US and German pension plans
Post-employment Benefit Expense [Line Items]
Gains / (losses) recognized in other comprehensive income, before tax	14	(35)	(8)
UBS AG \| Remaining plans
Post-employment Benefit Expense [Line Items]
Gains / (losses) recognized in other comprehensive income, before tax	$ (3)	$ (1)	$ 9

Post-employment benefit plans_4

Post-employment benefit plans (Detail 3) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Recognised Assets And Liabilities Defined Benefit Plan [Line Items]
Total net defined benefit post-employment asset		$ 42	$ 9
Total net defined benefit post-employment liability		722	633
of which: related to major plans
Recognised Assets And Liabilities Defined Benefit Plan [Line Items]
Total net defined benefit post-employment asset		42	9
Total net defined benefit post-employment liability		599	527
of which: Swiss pension plan
Recognised Assets And Liabilities Defined Benefit Plan [Line Items]
Total net defined benefit post-employment asset	[1]	0	0
of which: UK pension plan
Recognised Assets And Liabilities Defined Benefit Plan [Line Items]
Total net defined benefit post-employment asset		0	4
Total net defined benefit post-employment liability		13	0
of which: US and German pension plans
Recognised Assets And Liabilities Defined Benefit Plan [Line Items]
Total net defined benefit post-employment asset		42	5
Total net defined benefit post-employment liability	[2]	586	527
US pension plans
Recognised Assets And Liabilities Defined Benefit Plan [Line Items]
Total net defined benefit post-employment liability		88	111
German pension plans
Recognised Assets And Liabilities Defined Benefit Plan [Line Items]
Total net defined benefit post-employment liability		498	416
Remaining plans
Recognised Assets And Liabilities Defined Benefit Plan [Line Items]
Total net defined benefit post-employment liability		123	107
UBS AG
Recognised Assets And Liabilities Defined Benefit Plan [Line Items]
Total net defined benefit post-employment asset	[3]	42	9
Total net defined benefit post-employment liability		711	629
UBS AG \| of which: related to major plans
Recognised Assets And Liabilities Defined Benefit Plan [Line Items]
Total net defined benefit post-employment asset		42	9
Total net defined benefit post-employment liability		599	527
UBS AG \| of which: Swiss pension plan
Recognised Assets And Liabilities Defined Benefit Plan [Line Items]
Total net defined benefit post-employment asset		0	0
UBS AG \| of which: UK pension plan
Recognised Assets And Liabilities Defined Benefit Plan [Line Items]
Total net defined benefit post-employment asset		0	4
Total net defined benefit post-employment liability		13	0
UBS AG \| of which: US and German pension plans
Recognised Assets And Liabilities Defined Benefit Plan [Line Items]
Total net defined benefit post-employment asset		42	5
Total net defined benefit post-employment liability	[3]	586	527
UBS AG \| US pension plans
Recognised Assets And Liabilities Defined Benefit Plan [Line Items]
Total net defined benefit post-employment liability		88	111
UBS AG \| German pension plans
Recognised Assets And Liabilities Defined Benefit Plan [Line Items]
Total net defined benefit post-employment liability		498	416
UBS AG \| Remaining plans
Recognised Assets And Liabilities Defined Benefit Plan [Line Items]
Total net defined benefit post-employment liability		$ 112	$ 103

[1]	As of 31 December 2020 and 31 December 2019, the Swiss pension plan was in a surplus situation. No net defined benefit asset was recognized on the balance sheet due to the IFRS asset ceiling restriction. Refer to Note 26a for more information.
[2]	Of the total liability recognized as of 31 December 2020, USD 88 million related to US plans and USD 498 million related to German plans (31 December 2019: USD 111 million and USD 416 million, respectively).
[3]	Of the total liability recognized as of 31 December 2020, USD 88 million related to US plans and USD 498 million related to German plans (31 December 2019: USD 111 million and USD 416 million, respectively).

Post-employment benefit plans_5

Post-employment benefit plans (Narrative) (Detail) SFr in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2020CHF (SFr)yr	Dec. 31, 2020USD ($)yr	Dec. 31, 2019USD ($)
Disclosure Of Defined Benefit Plans [Line Items]
Total net defined benefit post-employment asset			$ 42	$ 9
Major plans
Disclosure Of Defined Benefit Plans [Line Items]
Employer contributions			792	732
Total net defined benefit post-employment asset			$ 42	$ 9
Swiss pension plan
Disclosure Of Defined Benefit Plans [Line Items]
Normal retirement age \| yr		65	65
Minimum age required to draw early retirement benefits \| yr		58	58
Maximum retirement age starting 2019 \| yr		70	70
Maximum period to restore full funding in case an underfunded situation occurs		10 years	10 years
Maximum obligation from the employer on the additional contributions required if a Swiss pension plan were to become significantly underfunded		50.00%	50.00%
Technical funding ratio		132.60%	132.60%	127.10%
Limit for investments in equities		50.00%	50.00%
Normal retirement age prior to 2019 \| yr		64	64
Starting age for pension fund savings contributions prior to 2019 \| yr		25	25
Starting age for pension fund savings contributions \| yr		20	20
Additional employer contributions paid to employees retirement assets			$ 235
Reduction of equity expected from additional employer contributions to be paid to pension plan			437
Employer contributions			729	$ 452
Minimum commitment toward the pension fund under the related leases			11	14
Total net defined benefit post-employment asset	[1]		0	0
Swiss pension plan \| 2021
Disclosure Of Defined Benefit Plans [Line Items]
Additional employer contributions paid to employees retirement assets			254
Regular employer contributions expected for the next year			518
Swiss pension plan \| 2020-2022
Disclosure Of Defined Benefit Plans [Line Items]
Additional employer contributions expected to be paid to employees retirement assets		SFr 720	$ 813
Swiss pension plan \| Maximum
Disclosure Of Defined Benefit Plans [Line Items]
Employer contributions on contributory base salary (as a percent)		27.50%	27.50%
Employer contributions on contributory variable compensation (as a percent)		9.00%	9.00%
Employee contributions on contributory base salary (as a percent)		13.50%	13.50%
Employee contributions on contributory variable compensation (as a percent)		9.00%	9.00%
Swiss pension plan \| Minimum
Disclosure Of Defined Benefit Plans [Line Items]
Employer contributions on contributory base salary (as a percent)		6.50%	6.50%
Employer contributions on contributory variable compensation (as a percent)		2.80%	2.80%
Employee contributions on contributory base salary (as a percent)		2.50%	2.50%
Employee contributions on contributory variable compensation (as a percent)		0.00%	0.00%
UK pension plan
Disclosure Of Defined Benefit Plans [Line Items]
Normal retirement age \| yr		60	60
Employer contributions			$ 46	242
Total net defined benefit post-employment asset			0	4
UK pension plan \| 2021
Disclosure Of Defined Benefit Plans [Line Items]
Collateral pool established for pension fund			347	364
Total contributions expected for the next year			0
US and German pension plans
Disclosure Of Defined Benefit Plans [Line Items]
Employer contributions			17	38
Total net defined benefit post-employment asset			$ 42	5
US pension plans
Disclosure Of Defined Benefit Plans [Line Items]
Normal retirement age \| yr		65	65
Number of plans			2
US pension plans \| 2021
Disclosure Of Defined Benefit Plans [Line Items]
Regular employer contributions expected for the next year			$ 10
German pension plans
Disclosure Of Defined Benefit Plans [Line Items]
Normal retirement age \| yr		65	65
Regular employer contributions expected for the next year			$ 11
Number of plans			2
German pension plans - Larger
Disclosure Of Defined Benefit Plans [Line Items]
Interest rate		5.00%	5.00%
German pension plans - Smaller \| before 2010
Disclosure Of Defined Benefit Plans [Line Items]
Interest rate		6.00%	6.00%
German pension plans - Smaller \| 2010-2017
Disclosure Of Defined Benefit Plans [Line Items]
Interest rate		4.00%	4.00%
German pension plans - Smaller \| time after 2017
Disclosure Of Defined Benefit Plans [Line Items]
Interest rate		0.90%	0.90%
UBS AG
Disclosure Of Defined Benefit Plans [Line Items]
Total net defined benefit post-employment asset	[2]		$ 42	9
UBS AG \| Major plans
Disclosure Of Defined Benefit Plans [Line Items]
Employer contributions			499	550
Total net defined benefit post-employment asset			$ 42	$ 9
UBS AG \| Swiss pension plan
Disclosure Of Defined Benefit Plans [Line Items]
Normal retirement age \| yr		65	65
Minimum age required to draw early retirement benefits \| yr		58	58
Maximum retirement age starting 2019 \| yr		70	70
Maximum period to restore full funding in case an underfunded situation occurs		10 years	10 years
Maximum obligation from the employer on the additional contributions required if a Swiss pension plan were to become significantly underfunded		50.00%	50.00%
Technical funding ratio		132.60%	132.60%	127.10%
Limit for investments in equities		50.00%	50.00%
Normal retirement age prior to 2019 \| yr		64	64
Starting age for pension fund savings contributions prior to 2019 \| yr		25	25
Starting age for pension fund savings contributions \| yr		20	20
Additional employer contributions paid to employees retirement assets			$ 143
Reduction of equity expected from additional employer contributions to be paid to pension plan			262
Employer contributions			436	$ 271
Minimum commitment toward the pension fund under the related leases			6	8
Total net defined benefit post-employment asset			0	0
UBS AG \| Swiss pension plan \| 2021
Disclosure Of Defined Benefit Plans [Line Items]
Additional employer contributions paid to employees retirement assets			152
Regular employer contributions expected for the next year			292
UBS AG \| Swiss pension plan \| 2020-2022
Disclosure Of Defined Benefit Plans [Line Items]
Additional employer contributions expected to be paid to employees retirement assets		SFr 450	$ 508
UBS AG \| Swiss pension plan \| Maximum
Disclosure Of Defined Benefit Plans [Line Items]
Employer contributions on contributory base salary (as a percent)		27.50%	27.50%
Employer contributions on contributory variable compensation (as a percent)		9.00%	9.00%
Employee contributions on contributory base salary (as a percent)		13.50%	13.50%
Employee contributions on contributory variable compensation (as a percent)		9.00%	9.00%
UBS AG \| Swiss pension plan \| Minimum
Disclosure Of Defined Benefit Plans [Line Items]
Employer contributions on contributory base salary (as a percent)		6.50%	6.50%
Employer contributions on contributory variable compensation (as a percent)		2.80%	2.80%
Employee contributions on contributory base salary (as a percent)		2.50%	2.50%
Employee contributions on contributory variable compensation (as a percent)		0.00%	0.00%
UBS AG \| UK pension plan
Disclosure Of Defined Benefit Plans [Line Items]
Normal retirement age \| yr		60	60
Employer contributions			$ 46	242
Total net defined benefit post-employment asset			0	4
UBS AG \| UK pension plan \| 2021
Disclosure Of Defined Benefit Plans [Line Items]
Collateral pool established for pension fund			347	364
Total contributions expected for the next year			0
UBS AG \| US and German pension plans
Disclosure Of Defined Benefit Plans [Line Items]
Employer contributions			17	38
Total net defined benefit post-employment asset			$ 42	$ 5
UBS AG \| US pension plans
Disclosure Of Defined Benefit Plans [Line Items]
Normal retirement age \| yr		65	65
Number of plans			2
UBS AG \| US pension plans \| 2021
Disclosure Of Defined Benefit Plans [Line Items]
Regular employer contributions expected for the next year			$ 10
UBS AG \| German pension plans
Disclosure Of Defined Benefit Plans [Line Items]
Normal retirement age \| yr		65	65
Regular employer contributions expected for the next year			$ 11
Number of plans			2
UBS AG \| German pension plans - Larger
Disclosure Of Defined Benefit Plans [Line Items]
Interest rate		5.00%	5.00%
UBS AG \| German pension plans - Smaller \| before 2010
Disclosure Of Defined Benefit Plans [Line Items]
Interest rate		6.00%	6.00%
UBS AG \| German pension plans - Smaller \| 2010-2017
Disclosure Of Defined Benefit Plans [Line Items]
Interest rate		4.00%	4.00%
UBS AG \| German pension plans - Smaller \| time after 2017
Disclosure Of Defined Benefit Plans [Line Items]
Interest rate		0.90%	0.90%

[1]	As of 31 December 2020 and 31 December 2019, the Swiss pension plan was in a surplus situation. No net defined benefit asset was recognized on the balance sheet due to the IFRS asset ceiling restriction. Refer to Note 26a for more information.
[2]	Of the total liability recognized as of 31 December 2020, USD 88 million related to US plans and USD 498 million related to German plans (31 December 2019: USD 111 million and USD 416 million, respectively).

Defined benefit plans (Detail 4

Defined benefit plans (Detail 4.1) - USD ($) $ in Millions		12 Months Ended
Defined benefit plans (Detail 4.1) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Total
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		$ (518)	$ (671)
Remeasurement of defined benefit obligation		(1,832)	(2,275)
Past service cost related to plan amendments		(3)	0
Other movements		4	0
Return on plan assets excluding interest income		2,324	2,492
Employer contributions		792	732
Asset ceiling effect excluding interest expense and foreign currency translation		(814)	(353)
Foreign currency translation		(35)	(3)
At the end of the year		(558)	(518)
Total \| Defined benefit obligation
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		29,970	27,437
Current service cost		453	415
Interest expense		190	351
Plan participant contributions		259	240
Remeasurement of defined benefit obligation		1,832	2,275
of which: actuarial (gains) / losses due to changes in demographic assumptions		(212)	(220)
of which: actuarial (gains) / losses due to changes in financial assumptions		1,621	2,241
of which: experience (gains) / losses	[1]	423	254
Past service cost related to plan amendments		3	0
Benefit payments		(1,409)	(1,283)
Other movements		(4)	0
Foreign currency translation		2,501	535
At the end of the year		33,795	29,970
Total \| Fair value of plan assets
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		33,176	30,039
Plan participant contributions		259	240
Benefit payments		(1,409)	(1,283)
Return on plan assets excluding interest income		2,324	2,492
Interest income		196	369
Employer contributions		792	732
Administration expenses, taxes and premiums paid		(17)	(13)
Foreign currency translation		2,779	599
At the end of the year		38,100	33,176
Total \| Asset ceiling effect
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		3,724	3,274
Interest expense on asset ceiling effect		12	30
Asset ceiling effect excluding interest expense and foreign currency translation		814	353
Foreign currency translation		313	67
At the end of the year		4,862	3,724
Total \| of which: amounts owed to active members
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		11,976
At the end of the year		14,169	11,976
Total \| of which: amounts owed to deferred members
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		2,233
At the end of the year		2,622	2,233
Total \| of which: amounts owed to retirees
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		15,760
At the end of the year		17,004	15,760
Swiss pension plan
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		0	0
Remeasurement of defined benefit obligation		(1,279)	(1,728)
Past service cost related to plan amendments		0	0
Other movements		4	0
Return on plan assets excluding interest income		1,818	2,059
Employer contributions		729	452
Asset ceiling effect excluding interest expense and foreign currency translation		(814)	(353)
Foreign currency translation		1	(13)
At the end of the year		0	0
Swiss pension plan \| Defined benefit obligation
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		24,496	22,566
Current service cost		447	409
Interest expense		72	200
Plan participant contributions		259	240
Remeasurement of defined benefit obligation		1,279	1,728
of which: actuarial (gains) / losses due to changes in demographic assumptions		(164)	(196)
of which: actuarial (gains) / losses due to changes in financial assumptions		983	1,641
of which: experience (gains) / losses	[1]	460	284
Past service cost related to plan amendments		0	0
Benefit payments		(1,153)	(1,046)
Other movements		(4)	0
Foreign currency translation		2,333	399
At the end of the year		27,728	24,496
Swiss pension plan \| Fair value of plan assets
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		28,219	25,839
Plan participant contributions		259	240
Benefit payments		(1,153)	(1,046)
Return on plan assets excluding interest income		1,818	2,059
Interest income		84	233
Employer contributions		729	452
Administration expenses, taxes and premiums paid		(13)	(11)
Foreign currency translation		2,647	453
At the end of the year		32,590	28,219
Swiss pension plan \| Asset ceiling effect
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		3,724	3,274
Interest expense on asset ceiling effect		12	30
Asset ceiling effect excluding interest expense and foreign currency translation		814	353
Foreign currency translation		313	67
At the end of the year		4,862	3,724
Swiss pension plan \| of which: amounts owed to active members
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		11,577
At the end of the year		13,765	11,577
Swiss pension plan \| of which: amounts owed to deferred members
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		0
At the end of the year		0	0
Swiss pension plan \| of which: amounts owed to retirees
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		12,918
At the end of the year		13,963	12,918
UK pension plan
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		4	(160)
Remeasurement of defined benefit obligation		(449)	(361)
Past service cost related to plan amendments		(3)	0
Other movements		0	0
Return on plan assets excluding interest income		388	284
Employer contributions		46	242
Asset ceiling effect excluding interest expense and foreign currency translation		0	0
Foreign currency translation		0	2
At the end of the year		(13)	4
UK pension plan \| Defined benefit obligation
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		3,654	3,192
Current service cost		0	0
Interest expense		73	92
Plan participant contributions		0	0
Remeasurement of defined benefit obligation		449	361
of which: actuarial (gains) / losses due to changes in demographic assumptions		(14)	(26)
of which: actuarial (gains) / losses due to changes in financial assumptions		505	421
of which: experience (gains) / losses	[1]	(42)	(34)
Past service cost related to plan amendments		3	0
Benefit payments		(148)	(135)
Other movements		0	0
Foreign currency translation		132	144
At the end of the year		4,162	3,654
UK pension plan \| Fair value of plan assets
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		3,658	3,032
Plan participant contributions		0	0
Benefit payments		(148)	(135)
Return on plan assets excluding interest income		388	284
Interest income		73	89
Employer contributions		46	242
Administration expenses, taxes and premiums paid		0	0
Foreign currency translation		132	146
At the end of the year		4,149	3,658
UK pension plan \| Asset ceiling effect
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		0	0
Interest expense on asset ceiling effect		0	0
Asset ceiling effect excluding interest expense and foreign currency translation		0	0
Foreign currency translation		0	0
At the end of the year		0	0
UK pension plan \| of which: amounts owed to active members
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		164
At the end of the year		159	164
UK pension plan \| of which: amounts owed to deferred members
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		1,559
At the end of the year		1,879	1,559
UK pension plan \| of which: amounts owed to retirees
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		1,931
At the end of the year		2,124	1,931
US and German pension plans
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		(521)	(511)
Remeasurement of defined benefit obligation		(105)	(185)
Past service cost related to plan amendments		0	0
Other movements		0	0
Return on plan assets excluding interest income		118	150
Employer contributions		17	38
Asset ceiling effect excluding interest expense and foreign currency translation		0	0
Foreign currency translation		(37)	8
At the end of the year		(545)	(521)
US and German pension plans \| Defined benefit obligation
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		1,820	1,679
Current service cost		6	6
Interest expense		45	59
Plan participant contributions		0	0
Remeasurement of defined benefit obligation		105	185
of which: actuarial (gains) / losses due to changes in demographic assumptions		(34)	3
of which: actuarial (gains) / losses due to changes in financial assumptions		134	179
of which: experience (gains) / losses	[1]	5	4
Past service cost related to plan amendments		0	0
Benefit payments		(108)	(102)
Other movements		0	0
Foreign currency translation		37	(8)
At the end of the year		1,905	1,820
US and German pension plans \| Fair value of plan assets
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		1,299	1,168
Plan participant contributions		0	0
Benefit payments		(108)	(102)
Return on plan assets excluding interest income		118	150
Interest income		38	47
Employer contributions		17	38
Administration expenses, taxes and premiums paid		(4)	(2)
Foreign currency translation		0	0
At the end of the year		1,360	1,299
US and German pension plans \| Asset ceiling effect
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		0	0
Interest expense on asset ceiling effect		0	0
Asset ceiling effect excluding interest expense and foreign currency translation		0	0
Foreign currency translation		0	0
At the end of the year		0	0
US and German pension plans \| of which: amounts owed to active members
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		235
At the end of the year		245	235
US and German pension plans \| of which: amounts owed to deferred members
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		675
At the end of the year		743	675
US and German pension plans \| of which: amounts owed to retirees
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		911
At the end of the year		917	911
UBS AG \| Total
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		(518)	(671)
Remeasurement of defined benefit obligation		(1,231)	(485)
Past service cost related to plan amendments		(3)	0
Other movements		4	0
Return on plan assets excluding interest income		1,469	403
Employer contributions		499	550
Asset ceiling effect excluding interest expense and foreign currency translation		(457)	(46)
Foreign currency translation		(35)	2
At the end of the year		(558)	(518)
UBS AG \| Total \| Defined benefit obligation
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		19,283	18,645
Current service cost		268	249
Interest expense		159	273
Plan participant contributions		159	149
Remeasurement of defined benefit obligation		1,231	485
of which: actuarial (gains) / losses due to changes in demographic assumptions		(101)	(148)
of which: actuarial (gains) / losses due to changes in financial assumptions		1,204	1,605
of which: experience (gains) / losses	[1],[2]	127	(972)
Past service cost related to plan amendments		3	0
Benefit payments		(898)	(860)
Other movements		(4)	0
Foreign currency translation		1,486	342
At the end of the year		21,686	19,283
UBS AG \| Total \| Fair value of plan assets
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		20,864	19,972
Plan participant contributions		159	149
Benefit payments		(898)	(860)
Return on plan assets excluding interest income	[2]	1,469	403
Interest income		159	278
Employer contributions		499	550
Administration expenses, taxes and premiums paid		(11)	(9)
Foreign currency translation		1,626	381
At the end of the year		23,867	20,864
UBS AG \| Total \| Asset ceiling effect
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		2,099	1,998
Interest expense on asset ceiling effect		7	18
Asset ceiling effect excluding interest expense and foreign currency translation		457	46
Foreign currency translation		176	36
At the end of the year		2,739	2,099
UBS AG \| Total \| of which: amounts owed to active members
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		7,472
At the end of the year		8,694	7,472
UBS AG \| Total \| of which: amounts owed to deferred members
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		2,233
At the end of the year		2,622	2,233
UBS AG \| Total \| of which: amounts owed to retirees
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		9,577
At the end of the year		10,370	9,577
UBS AG \| Swiss pension plan
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		0	0
Remeasurement of defined benefit obligation		(677)	61
Past service cost related to plan amendments		0	0
Other movements		4	0
Return on plan assets excluding interest income		962	(30)
Employer contributions		436	271
Asset ceiling effect excluding interest expense and foreign currency translation		(457)	(46)
Foreign currency translation		1	(8)
At the end of the year		0	0
UBS AG \| Swiss pension plan \| Defined benefit obligation
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		13,809	13,774
Current service cost		262	243
Interest expense		40	122
Plan participant contributions		159	149
Remeasurement of defined benefit obligation		677	(61)
of which: actuarial (gains) / losses due to changes in demographic assumptions		(53)	(125)
of which: actuarial (gains) / losses due to changes in financial assumptions		565	1,006
of which: experience (gains) / losses	[1],[2]	165	(942)
Past service cost related to plan amendments		0	0
Benefit payments		(641)	(624)
Other movements		(4)	0
Foreign currency translation		1,317	206
At the end of the year		15,619	13,809
UBS AG \| Swiss pension plan \| Fair value of plan assets
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		15,908	15,772
Plan participant contributions		159	149
Benefit payments		(641)	(624)
Return on plan assets excluding interest income	[2]	962	(30)
Interest income		48	142
Employer contributions		436	271
Administration expenses, taxes and premiums paid		(8)	(7)
Foreign currency translation		1,495	235
At the end of the year		18,358	15,908
UBS AG \| Swiss pension plan \| Asset ceiling effect
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		2,099	1,998
Interest expense on asset ceiling effect		7	18
Asset ceiling effect excluding interest expense and foreign currency translation		457	46
Foreign currency translation		176	36
At the end of the year		2,739	2,099
UBS AG \| Swiss pension plan \| of which: amounts owed to active members
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		7,073
At the end of the year		8,290	7,073
UBS AG \| Swiss pension plan \| of which: amounts owed to deferred members
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		0
At the end of the year		0	0
UBS AG \| Swiss pension plan \| of which: amounts owed to retirees
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		6,735
At the end of the year		7,329	6,735
UBS AG \| UK pension plan
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		4	(160)
Remeasurement of defined benefit obligation		(449)	(361)
Past service cost related to plan amendments		(3)	0
Other movements		0	0
Return on plan assets excluding interest income		388	284
Employer contributions		46	242
Asset ceiling effect excluding interest expense and foreign currency translation		0	0
Foreign currency translation		0	2
At the end of the year		(13)	4
UBS AG \| UK pension plan \| Defined benefit obligation
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		3,654	3,192
Current service cost		0	0
Interest expense		73	92
Plan participant contributions		0	0
Remeasurement of defined benefit obligation		449	361
of which: actuarial (gains) / losses due to changes in demographic assumptions		(14)	(26)
of which: actuarial (gains) / losses due to changes in financial assumptions		505	421
of which: experience (gains) / losses	[1],[2]	(42)	(34)
Past service cost related to plan amendments		3	0
Benefit payments		(148)	(135)
Other movements		0	0
Foreign currency translation		132	144
At the end of the year		4,162	3,654
UBS AG \| UK pension plan \| Fair value of plan assets
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		3,658	3,032
Plan participant contributions		0	0
Benefit payments		(148)	(135)
Return on plan assets excluding interest income	[2]	388	284
Interest income		73	89
Employer contributions		46	242
Administration expenses, taxes and premiums paid		0	0
Foreign currency translation		132	146
At the end of the year		4,149	3,658
UBS AG \| UK pension plan \| Asset ceiling effect
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		0	0
Interest expense on asset ceiling effect		0	0
Asset ceiling effect excluding interest expense and foreign currency translation		0	0
Foreign currency translation		0	0
At the end of the year		0	0
UBS AG \| UK pension plan \| of which: amounts owed to active members
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		164
At the end of the year		159	164
UBS AG \| UK pension plan \| of which: amounts owed to deferred members
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		1,559
At the end of the year		1,879	1,559
UBS AG \| UK pension plan \| of which: amounts owed to retirees
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		1,931
At the end of the year		2,124	1,931
UBS AG \| US and German pension plans
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		(521)	(511)
Remeasurement of defined benefit obligation		(105)	(185)
Past service cost related to plan amendments		0	0
Other movements		0	0
Return on plan assets excluding interest income		118	150
Employer contributions		17	38
Asset ceiling effect excluding interest expense and foreign currency translation		0	0
Foreign currency translation		(37)	8
At the end of the year		(545)	(521)
UBS AG \| US and German pension plans \| Defined benefit obligation
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		1,820	1,679
Current service cost		6	6
Interest expense		45	59
Plan participant contributions		0	0
Remeasurement of defined benefit obligation		105	185
of which: actuarial (gains) / losses due to changes in demographic assumptions		(34)	3
of which: actuarial (gains) / losses due to changes in financial assumptions		134	179
of which: experience (gains) / losses	[1],[2]	5	4
Past service cost related to plan amendments		0	0
Benefit payments		(108)	(102)
Other movements		0	0
Foreign currency translation		37	(8)
At the end of the year		1,905	1,820
UBS AG \| US and German pension plans \| Fair value of plan assets
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		1,299	1,168
Plan participant contributions		0	0
Benefit payments		(108)	(102)
Return on plan assets excluding interest income	[2]	118	150
Interest income		38	47
Employer contributions		17	38
Administration expenses, taxes and premiums paid		(4)	(2)
Foreign currency translation		0	0
At the end of the year		1,360	1,299
UBS AG \| US and German pension plans \| Asset ceiling effect
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		0	0
Interest expense on asset ceiling effect		0	0
Asset ceiling effect excluding interest expense and foreign currency translation		0	0
Foreign currency translation		0	0
At the end of the year		0	0
UBS AG \| US and German pension plans \| of which: amounts owed to active members
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		235
At the end of the year		245	235
UBS AG \| US and German pension plans \| of which: amounts owed to deferred members
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		675
At the end of the year		743	675
UBS AG \| US and German pension plans \| of which: amounts owed to retirees
Disclosure Of Net Defined Benefit Liability Asset [Line Items]
At the beginning of the year		911
At the end of the year		$ 917	$ 911

[1]	Experience (gains) / losses are a component of actuarial remeasurements of the defined benefit obligation that reflect the effects of differences between the previous actuarial assumptions and what has actually occurred.
[2]	Includes the effect from employees transferring between UBS AG and UBS Business Solutions during the period.

Defined benefit plans (Detail_2

Defined benefit plans (Detail 4.2) - USD ($) $ in Millions	12 Months Ended
Defined benefit plans (Detail 4.2) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Net Defined Benefit Liability Asset On Balance Sheet [Line Items]
Gains / (losses) recognized in other comprehensive income, before tax	$ (327)	$ (146)	$ (220)
Total
Disclosure Of Net Defined Benefit Liability Asset On Balance Sheet [Line Items]
At the beginning of the year	(518)	(671)
Net periodic expenses recognized in net profit	(479)	(440)
Gains / (losses) recognized in other comprehensive income, before tax	(323)	(135)	(230)
Employer contributions	792	732
Other movements	4	0
Foreign currency translation	(35)	(3)
At the end of the year	(558)	(518)	(671)
Swiss pension plan
Disclosure Of Net Defined Benefit Liability Asset On Balance Sheet [Line Items]
At the beginning of the year	0	0
Net periodic expenses recognized in net profit	(459)	(417)
Gains / (losses) recognized in other comprehensive income, before tax	(276)	(22)	(352)
Employer contributions	729	452
Other movements	4	0
Foreign currency translation	1	(13)
At the end of the year	0	0	0
UK pension plan
Disclosure Of Net Defined Benefit Liability Asset On Balance Sheet [Line Items]
At the beginning of the year	4	(160)
Net periodic expenses recognized in net profit	(3)	(3)
Gains / (losses) recognized in other comprehensive income, before tax	(61)	(78)	130
Employer contributions	46	242
Other movements	0	0
Foreign currency translation	0	2
At the end of the year	(13)	4	(160)
US and German pension plans
Disclosure Of Net Defined Benefit Liability Asset On Balance Sheet [Line Items]
At the beginning of the year	(521)	(511)
Net periodic expenses recognized in net profit	(18)	(21)
Gains / (losses) recognized in other comprehensive income, before tax	14	(35)	(8)
Employer contributions	17	38
Other movements	0	0
Foreign currency translation	(37)	8
At the end of the year	(545)	(521)	(511)
UBS AG
Disclosure Of Net Defined Benefit Liability Asset On Balance Sheet [Line Items]
Gains / (losses) recognized in other comprehensive income, before tax	(222)	(129)	(70)
UBS AG \| Total
Disclosure Of Net Defined Benefit Liability Asset On Balance Sheet [Line Items]
At the beginning of the year	(518)	(671)
Net periodic expenses recognized in net profit	(289)	(271)
Gains / (losses) recognized in other comprehensive income, before tax	(219)	(128)	(79)
Employer contributions	499	550
Other movements	4	0
Foreign currency translation	(35)	2
At the end of the year	(558)	(518)	(671)
UBS AG \| Swiss pension plan
Disclosure Of Net Defined Benefit Liability Asset On Balance Sheet [Line Items]
At the beginning of the year	0	0
Net periodic expenses recognized in net profit	(269)	(248)
Gains / (losses) recognized in other comprehensive income, before tax	(172)	(15)	(201)
Employer contributions	436	271
Other movements	4	0
Foreign currency translation	1	(8)
At the end of the year	0	0	0
UBS AG \| UK pension plan
Disclosure Of Net Defined Benefit Liability Asset On Balance Sheet [Line Items]
At the beginning of the year	4	(160)
Net periodic expenses recognized in net profit	(3)	(3)
Gains / (losses) recognized in other comprehensive income, before tax	(61)	(78)	130
Employer contributions	46	242
Other movements	0	0
Foreign currency translation	0	2
At the end of the year	(13)	4	(160)
UBS AG \| US and German pension plans
Disclosure Of Net Defined Benefit Liability Asset On Balance Sheet [Line Items]
At the beginning of the year	(521)	(511)
Net periodic expenses recognized in net profit	(18)	(21)
Gains / (losses) recognized in other comprehensive income, before tax	14	(35)	(8)
Employer contributions	17	38
Other movements	0	0
Foreign currency translation	(37)	8
At the end of the year	$ (545)	$ (521)	$ (511)

Defined benefit plans (Detail_3

Defined benefit plans (Detail 4.3) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019		Dec. 31, 2018
Total
Disclosure Of Net Defined Benefit Liability Asset By Funded And Unfunded [Line Items]
Defined benefit obligation from funded plans		$ 33,209	$ 29,469
Defined benefit obligation from unfunded plans		586	501
Plan assets		38,100	33,176
Surplus / (deficit)		4,304	3,206
Asset ceiling effect		4,862	3,724
Net defined benefit asset / (liability)		(558)	(518)		$ (671)
Swiss pension plan
Disclosure Of Net Defined Benefit Liability Asset By Funded And Unfunded [Line Items]
Defined benefit obligation from funded plans		27,728	24,496
Defined benefit obligation from unfunded plans		0	0
Plan assets	[1]	32,590	28,219
Surplus / (deficit)		4,862	3,724
Asset ceiling effect		4,862	3,724
Net defined benefit asset / (liability)		0	0		0
UK pension plan
Disclosure Of Net Defined Benefit Liability Asset By Funded And Unfunded [Line Items]
Defined benefit obligation from funded plans		4,162	3,654
Defined benefit obligation from unfunded plans		0	0
Plan assets		4,149	3,658
Surplus / (deficit)		(13)	4
Asset ceiling effect		0	0
Net defined benefit asset / (liability)		(13)	4		(160)
US and German pension plans
Disclosure Of Net Defined Benefit Liability Asset By Funded And Unfunded [Line Items]
Defined benefit obligation from funded plans		1,319	1,319
Defined benefit obligation from unfunded plans		586	501
Plan assets		1,360	1,299
Surplus / (deficit)		(545)	(521)
Asset ceiling effect		0	0
Net defined benefit asset / (liability)		(545)	(521)		(511)
UBS AG \| Total
Disclosure Of Net Defined Benefit Liability Asset By Funded And Unfunded [Line Items]
Defined benefit obligation from funded plans		21,100	18,782
Defined benefit obligation from unfunded plans		586	501
Plan assets		23,867	20,864
Surplus / (deficit)		2,181	1,582
Asset ceiling effect		2,739	2,099
Net defined benefit asset / (liability)		(558)	(518)		(671)
UBS AG \| Swiss pension plan
Disclosure Of Net Defined Benefit Liability Asset By Funded And Unfunded [Line Items]
Defined benefit obligation from funded plans		15,619	13,809
Defined benefit obligation from unfunded plans		0	0
Plan assets		18,358	15,908	[2]
Surplus / (deficit)		2,739	2,099
Asset ceiling effect		2,739	2,099
Net defined benefit asset / (liability)		0	0		0
UBS AG \| UK pension plan
Disclosure Of Net Defined Benefit Liability Asset By Funded And Unfunded [Line Items]
Defined benefit obligation from funded plans		4,162	3,654
Defined benefit obligation from unfunded plans		0	0
Plan assets		4,149	3,658
Surplus / (deficit)		(13)	4
Asset ceiling effect		0	0
Net defined benefit asset / (liability)		(13)	4		(160)
UBS AG \| US and German pension plans
Disclosure Of Net Defined Benefit Liability Asset By Funded And Unfunded [Line Items]
Defined benefit obligation from funded plans		1,319	1,319
Defined benefit obligation from unfunded plans		586	501
Plan assets		1,360	1,299
Surplus / (deficit)		(545)	(521)
Asset ceiling effect		0	0
Net defined benefit asset / (liability)		$ (545)	$ (521)		$ (511)

[1]	Bank accounts at UBS encompass accounts in the name of the Swiss pension fund. The other positions disclosed in the table encompass both direct investments in UBS instruments and indirect investments, i.e., those made through funds that the pension fund invests in.
[2]	Bank accounts at UBS AG encompass accounts in the name of the Swiss pension fund. The other positions disclosed in the table encompass both direct investments in UBS AG instruments and UBS Group AG shares and indirect investments, i.e., those made through funds that the pension fund invests in.

Defined benefit plans (Detail 5

Defined benefit plans (Detail 5.1) - USD ($) $ in Millions		12 Months Ended
Defined benefit plans (Detail 5.1) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Post-employment Benefit Expense Defined Benefit Pension Plans [Line Items]
Net periodic expenses recognized in net profit		$ 502	$ 461	$ 188
Major plans
Post-employment Benefit Expense Defined Benefit Pension Plans [Line Items]
Current service cost		453	415
Interest expense related to defined benefit obligation		190	351
Interest income related to plan assets		(196)	(369)
Interest expense on asset ceiling effect		12	30
Administration expenses, taxes and premiums paid		17	13
Past service cost related to plan amendments		3	0
Net periodic expenses recognized in net profit		479	440	186
Swiss pension plan
Post-employment Benefit Expense Defined Benefit Pension Plans [Line Items]
Current service cost		447	409
Interest expense related to defined benefit obligation		72	200
Interest income related to plan assets		(84)	(233)
Interest expense on asset ceiling effect		12	30
Administration expenses, taxes and premiums paid		13	11
Past service cost related to plan amendments		0	0
Net periodic expenses recognized in net profit	[1]	459	417	153
UK pension plan
Post-employment Benefit Expense Defined Benefit Pension Plans [Line Items]
Current service cost		0	0
Interest expense related to defined benefit obligation		73	92
Interest income related to plan assets		(73)	(89)
Interest expense on asset ceiling effect		0	0
Administration expenses, taxes and premiums paid		0	0
Past service cost related to plan amendments		3	0
Net periodic expenses recognized in net profit		3	3	11
US and German pension plans
Post-employment Benefit Expense Defined Benefit Pension Plans [Line Items]
Current service cost		6	6
Interest expense related to defined benefit obligation		45	59
Interest income related to plan assets		(38)	(47)
Interest expense on asset ceiling effect		0	0
Administration expenses, taxes and premiums paid		4	2
Past service cost related to plan amendments		0	0
Net periodic expenses recognized in net profit		18	21	22
UBS AG
Post-employment Benefit Expense Defined Benefit Pension Plans [Line Items]
Net periodic expenses recognized in net profit		306	291	140
UBS AG \| Major plans
Post-employment Benefit Expense Defined Benefit Pension Plans [Line Items]
Current service cost		268	249
Interest expense related to defined benefit obligation		159	273
Interest income related to plan assets		(159)	(278)
Interest expense on asset ceiling effect		7	18
Administration expenses, taxes and premiums paid		11	9
Past service cost related to plan amendments		3	0
Net periodic expenses recognized in net profit		289	271	141
UBS AG \| Swiss pension plan
Post-employment Benefit Expense Defined Benefit Pension Plans [Line Items]
Current service cost		262	243
Interest expense related to defined benefit obligation		40	122
Interest income related to plan assets		(48)	(142)
Interest expense on asset ceiling effect		7	18
Administration expenses, taxes and premiums paid		8	7
Past service cost related to plan amendments		0	0
Net periodic expenses recognized in net profit	[1]	269	248	108
UBS AG \| UK pension plan
Post-employment Benefit Expense Defined Benefit Pension Plans [Line Items]
Current service cost		0	0
Interest expense related to defined benefit obligation		73	92
Interest income related to plan assets		(73)	(89)
Interest expense on asset ceiling effect		0	0
Administration expenses, taxes and premiums paid		0	0
Past service cost related to plan amendments		3	0
Net periodic expenses recognized in net profit		3	3	11
UBS AG \| US and German pension plans
Post-employment Benefit Expense Defined Benefit Pension Plans [Line Items]
Current service cost		6	6
Interest expense related to defined benefit obligation		45	59
Interest income related to plan assets		(38)	(47)
Interest expense on asset ceiling effect		0	0
Administration expenses, taxes and premiums paid		4	2
Past service cost related to plan amendments		0	0
Net periodic expenses recognized in net profit		$ 18	$ 21	$ 22

[1]	Changes to the Swiss pension plan announced in 2018 resulted in a pre-tax gain of USD 241 million related to past service. Refer to Note 26a for more information on these changes. 3 Other expenses include differences between actual and estimated performance award accruals. 4 Refer to Note 26b for more information. 5 Refer to Note 6.

Defined benefit plans (Detail_4

Defined benefit plans (Detail 5.2) - USD ($) $ in Millions		12 Months Ended
Defined benefit plans (Detail 5.2) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Total gains / (losses) recognized in other comprehensive income, before tax		$ (327)	$ (146)	$ (220)
Major plans
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(1,832)	(2,275)
Return on plan assets excluding interest income		2,324	2,492
Asset ceiling effect excluding interest expense and foreign currency translation		(814)	(353)
Total gains / (losses) recognized in other comprehensive income, before tax		(323)	(135)	(230)
Major plans \| of which: change in discount rate assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(1,421)	(2,605)
Major plans \| of which: change in rate of salary increase assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(230)	3
Major plans \| of which: change in rate of pension increase assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		0	128
Major plans \| of which: change in rate of interest credit on retirement savings assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		50	261
Major plans \| of which: change in life expectancy
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		333	25
Major plans \| of which: change in other actuarial assumptions
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(142)	168
Major plans \| of which: experience gains / (losses)
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation	[1]	(423)	(254)
Swiss pension plan
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(1,279)	(1,728)
Return on plan assets excluding interest income		1,818	2,059
Asset ceiling effect excluding interest expense and foreign currency translation		(814)	(353)
Total gains / (losses) recognized in other comprehensive income, before tax		(276)	(22)	(352)
Swiss pension plan \| of which: change in discount rate assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(777)	(1,887)
Swiss pension plan \| of which: change in rate of salary increase assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(230)	3
Swiss pension plan \| of which: change in rate of pension increase assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		0	0
Swiss pension plan \| of which: change in rate of interest credit on retirement savings assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		26	243
Swiss pension plan \| of which: change in life expectancy
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		261	0
Swiss pension plan \| of which: change in other actuarial assumptions
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(99)	196
Swiss pension plan \| of which: experience gains / (losses)
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation	[1]	(460)	(284)
UK pension plan
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(449)	(361)
Return on plan assets excluding interest income		388	284
Asset ceiling effect excluding interest expense and foreign currency translation		0	0
Total gains / (losses) recognized in other comprehensive income, before tax		(61)	(78)	130
UK pension plan \| of which: change in discount rate assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(504)	(552)
UK pension plan \| of which: change in rate of salary increase assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		0	0
UK pension plan \| of which: change in rate of pension increase assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(1)	132
UK pension plan \| of which: change in rate of interest credit on retirement savings assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		0	0
UK pension plan \| of which: change in life expectancy
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		22	21
UK pension plan \| of which: change in other actuarial assumptions
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(8)	5
UK pension plan \| of which: experience gains / (losses)
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation	[1]	42	34
US and German pension plans
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(105)	(185)
Return on plan assets excluding interest income		118	150
Asset ceiling effect excluding interest expense and foreign currency translation		0	0
Total gains / (losses) recognized in other comprehensive income, before tax		14	(35)	(8)
US and German pension plans \| of which: change in discount rate assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(141)	(166)
US and German pension plans \| of which: change in rate of salary increase assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		0	0
US and German pension plans \| of which: change in rate of pension increase assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		1	(4)
US and German pension plans \| of which: change in rate of interest credit on retirement savings assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		24	18
US and German pension plans \| of which: change in life expectancy
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		50	4
US and German pension plans \| of which: change in other actuarial assumptions
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(34)	(33)
US and German pension plans \| of which: experience gains / (losses)
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation	[1]	(5)	(4)
UBS AG
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Total gains / (losses) recognized in other comprehensive income, before tax		(222)	(129)	(70)
UBS AG \| Major plans
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(1,231)	(485)
Return on plan assets excluding interest income		1,469	403
Asset ceiling effect excluding interest expense and foreign currency translation		(457)	(46)
Total gains / (losses) recognized in other comprehensive income, before tax		(219)	(128)	(79)
UBS AG \| Major plans \| of which: change in discount rate assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(1,092)	(1,874)
UBS AG \| Major plans \| of which: change in rate of salary increase assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(132)	2
UBS AG \| Major plans \| of which: change in rate of pension increase assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		0	128
UBS AG \| Major plans \| of which: change in rate of interest credit on retirement savings assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		39	167
UBS AG \| Major plans \| of which: change in life expectancy
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		156	25
UBS AG \| Major plans \| of which: change in other actuarial assumptions
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(75)	97
UBS AG \| Major plans \| of which: experience gains / (losses)
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation	[1]	(127)	972
UBS AG \| Swiss pension plan
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(677)	61
Return on plan assets excluding interest income		962	(30)
Asset ceiling effect excluding interest expense and foreign currency translation		(457)	(46)
Total gains / (losses) recognized in other comprehensive income, before tax		(172)	(15)	(201)
UBS AG \| Swiss pension plan \| of which: change in discount rate assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(447)	(1,156)
UBS AG \| Swiss pension plan \| of which: change in rate of salary increase assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(132)	2
UBS AG \| Swiss pension plan \| of which: change in rate of pension increase assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		0	0
UBS AG \| Swiss pension plan \| of which: change in rate of interest credit on retirement savings assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		15	149
UBS AG \| Swiss pension plan \| of which: change in life expectancy
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		84	0
UBS AG \| Swiss pension plan \| of which: change in other actuarial assumptions
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(33)	125
UBS AG \| Swiss pension plan \| of which: experience gains / (losses)
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation	[1]	(165)	942
UBS AG \| UK pension plan
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(449)	(361)
Return on plan assets excluding interest income		388	284
Asset ceiling effect excluding interest expense and foreign currency translation		0	0
Total gains / (losses) recognized in other comprehensive income, before tax		(61)	(78)	130
UBS AG \| UK pension plan \| of which: change in discount rate assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(504)	(552)
UBS AG \| UK pension plan \| of which: change in rate of salary increase assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		0	0
UBS AG \| UK pension plan \| of which: change in rate of pension increase assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(1)	132
UBS AG \| UK pension plan \| of which: change in rate of interest credit on retirement savings assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		0	0
UBS AG \| UK pension plan \| of which: change in life expectancy
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		22	21
UBS AG \| UK pension plan \| of which: change in other actuarial assumptions
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(8)	5
UBS AG \| UK pension plan \| of which: experience gains / (losses)
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation	[1]	42	34
UBS AG \| US and German pension plans
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(105)	(185)
Return on plan assets excluding interest income		118	150
Asset ceiling effect excluding interest expense and foreign currency translation		0	0
Total gains / (losses) recognized in other comprehensive income, before tax		14	(35)	$ (8)
UBS AG \| US and German pension plans \| of which: change in discount rate assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(141)	(166)
UBS AG \| US and German pension plans \| of which: change in rate of salary increase assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		0	0
UBS AG \| US and German pension plans \| of which: change in rate of pension increase assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		1	(4)
UBS AG \| US and German pension plans \| of which: change in rate of interest credit on retirement savings assumption
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		24	18
UBS AG \| US and German pension plans \| of which: change in life expectancy
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		50	4
UBS AG \| US and German pension plans \| of which: change in other actuarial assumptions
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation		(34)	(33)
UBS AG \| US and German pension plans \| of which: experience gains / (losses)
Other Comprehensive Income Before Tax Gains Losses On Remeasurements Of Defined Benefit Pension Plans [Line Items]
Remeasurement of defined benefit obligation	[1]	$ (5)	$ (4)

[1]	Experience (gains) / losses are a component of actuarial remeasurements of the defined benefit obligation that reflect the effects of differences between the previous actuarial assumptions and what has actually occurred.

Defined benefit plans (Detail 6

Defined benefit plans (Detail 6) - USD ($) $ in Millions		12 Months Ended
Defined benefit plans (Detail 6) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Swiss pension plan
Disclosure Of Defined Benefit Plans [Line Items]
Duration of the defined benefit obligation		15 years 8 months 12 days	14 years 10 months 24 days
Maturity analysis of benefits expected to be paid
Benefits expected to be paid within 12 months		$ 1,293	$ 1,232
Benefits expected to be paid between 1 and 3 years		2,630	2,483
Benefits expected to be paid between 3 and 6 years		3,839	3,670
Benefits expected to be paid between 6 and 11 years		6,166	5,761
Benefits expected to be paid between 11 and 16 years		5,646	5,070
Benefits expected to be paid in more than 16 years		$ 18,884	$ 15,517
UK pension plan
Disclosure Of Defined Benefit Plans [Line Items]
Duration of the defined benefit obligation		19 years	20 years 2 months 12 days
Maturity analysis of benefits expected to be paid
Benefits expected to be paid within 12 months		$ 114	$ 93
Benefits expected to be paid between 1 and 3 years		232	209
Benefits expected to be paid between 3 and 6 years		406	384
Benefits expected to be paid between 6 and 11 years		744	748
Benefits expected to be paid between 11 and 16 years		758	807
Benefits expected to be paid in more than 16 years		$ 3,206	$ 3,913
US and German pension plans
Disclosure Of Defined Benefit Plans [Line Items]
Duration of the defined benefit obligation	[1]	10 years 2 months 12 days	10 years 1 month 6 days
Maturity analysis of benefits expected to be paid
Benefits expected to be paid within 12 months	[1]	$ 122	$ 121
Benefits expected to be paid between 1 and 3 years	[1]	235	228
Benefits expected to be paid between 3 and 6 years	[1]	346	346
Benefits expected to be paid between 6 and 11 years	[1]	532	548
Benefits expected to be paid between 11 and 16 years	[1]	413	455
Benefits expected to be paid in more than 16 years	[1]	$ 541	$ 721
UBS AG \| Swiss pension plan
Disclosure Of Defined Benefit Plans [Line Items]
Duration of the defined benefit obligation		16 years 2 months 12 days	15 years 2 months 12 days
Maturity analysis of benefits expected to be paid
Benefits expected to be paid within 12 months		$ 710	$ 687
Benefits expected to be paid between 1 and 3 years		1,442	1,383
Benefits expected to be paid between 3 and 6 years		2,100	2,048
Benefits expected to be paid between 6 and 11 years		3,408	3,232
Benefits expected to be paid between 11 and 16 years		3,184	2,899
Benefits expected to be paid in more than 16 years		$ 11,186	$ 9,136
UBS AG \| UK pension plan
Disclosure Of Defined Benefit Plans [Line Items]
Duration of the defined benefit obligation		19 years	20 years 2 months 12 days
Maturity analysis of benefits expected to be paid
Benefits expected to be paid within 12 months		$ 114	$ 93
Benefits expected to be paid between 1 and 3 years		232	209
Benefits expected to be paid between 3 and 6 years		406	384
Benefits expected to be paid between 6 and 11 years		744	748
Benefits expected to be paid between 11 and 16 years		758	807
Benefits expected to be paid in more than 16 years		$ 3,206	$ 3,913
UBS AG \| US and German pension plans
Disclosure Of Defined Benefit Plans [Line Items]
Duration of the defined benefit obligation		10 years 2 months 12 days	10 years 1 month 6 days
Maturity analysis of benefits expected to be paid
Benefits expected to be paid within 12 months	[1]	$ 122	$ 121
Benefits expected to be paid between 1 and 3 years	[1]	235	228
Benefits expected to be paid between 3 and 6 years	[1]	346	346
Benefits expected to be paid between 6 and 11 years	[1]	532	548
Benefits expected to be paid between 11 and 16 years	[1]	413	455
Benefits expected to be paid in more than 16 years	[1]	$ 541	$ 721

[1]	The duration of the defined benefit obligation represents a weighted average across US and German plans.

Defined benefit plans (Detail 7

Defined benefit plans (Detail 7)		Dec. 31, 2020	Dec. 31, 2019
Swiss pension plan
Disclosure Of Defined Benefit Plans [Line Items]
Discount rate		0.10%	0.29%
Rate of salary increase		2.00%	1.50%
Rate of pension increase		0.00%	0.00%
Rate of interest credit on retirement savings		0.60%	0.49%
UK pension plan
Disclosure Of Defined Benefit Plans [Line Items]
Discount rate		1.42%	2.07%
Rate of salary increase		0.00%	0.00%
Rate of pension increase		2.89%	2.92%
Rate of interest credit on retirement savings		0.00%	0.00%
US and German pension plans
Disclosure Of Defined Benefit Plans [Line Items]
Discount rate	[1]	1.62%	2.58%
Rate of salary increase	[1]	2.25%	2.37%
Rate of pension increase	[1]	1.70%	1.80%
Rate of interest credit on retirement savings	[1]	1.12%	2.57%
UBS AG \| Swiss pension plan
Disclosure Of Defined Benefit Plans [Line Items]
Discount rate		0.10%	0.29%
Rate of salary increase		2.00%	1.50%
Rate of pension increase		0.00%	0.00%
Rate of interest credit on retirement savings		0.60%	0.49%
UBS AG \| UK pension plan
Disclosure Of Defined Benefit Plans [Line Items]
Discount rate		1.42%	2.07%
Rate of salary increase		0.00%	0.00%
Rate of pension increase		2.89%	2.92%
Rate of interest credit on retirement savings		0.00%	0.00%
UBS AG \| US and German pension plans
Disclosure Of Defined Benefit Plans [Line Items]
Discount rate	[1]	1.62%	2.58%
Rate of salary increase	[1]	2.25%	2.37%
Rate of pension increase	[1]	1.70%	1.80%
Rate of interest credit on retirement savings	[1]	1.12%	2.57%

[1]	Represents weighted average assumptions across US and German plans.

Defined benefit plans (Detail 8

Defined benefit plans (Detail 8)		Dec. 31, 2020	Dec. 31, 2019
Switzerland \| aged 65 \| Mortality table Switzerland
Disclosure Of Defined Benefit Plans [Line Items]
Life expectancy at age 65 for a male member currently	[1]	21.7	21.6
Life expectancy at age 65 for a female member currently	[1]	23.4	23.6
Switzerland \| aged 45 \| Mortality table Switzerland
Disclosure Of Defined Benefit Plans [Line Items]
Life expectancy at age 65 for a male member currently	[1]	23.2	23.1
Life expectancy at age 65 for a female member currently	[1]	24.9	25.1
UK \| aged 65 \| Mortality table UK
Disclosure Of Defined Benefit Plans [Line Items]
Life expectancy at age 65 for a male member currently	[2]	23.4	23.3
Life expectancy at age 65 for a female member currently	[2]	24.9	25.1
UK \| aged 45 \| Mortality table UK
Disclosure Of Defined Benefit Plans [Line Items]
Life expectancy at age 65 for a male member currently	[2]	24.6	24.5
Life expectancy at age 65 for a female member currently	[2]	26.3	26.4
United States \| aged 65 \| Mortality table USA
Disclosure Of Defined Benefit Plans [Line Items]
Life expectancy at age 65 for a male member currently	[3]	21.8	22.8
Life expectancy at age 65 for a female member currently	[3]	23.2	24.4
United States \| aged 45 \| Mortality table USA
Disclosure Of Defined Benefit Plans [Line Items]
Life expectancy at age 65 for a male member currently	[3]	23.2	24.3
Life expectancy at age 65 for a female member currently	[3]	24.5	25.9
Germany \| aged 65 \| Mortality table Germany
Disclosure Of Defined Benefit Plans [Line Items]
Life expectancy at age 65 for a male member currently		20.8	20.7
Life expectancy at age 65 for a female member currently		24.3	24.2
Germany \| aged 45 \| Mortality table Germany
Disclosure Of Defined Benefit Plans [Line Items]
Life expectancy at age 65 for a male member currently		23.6	23.5
Life expectancy at age 65 for a female member currently		26.5	26.4
UBS AG \| Switzerland \| aged 65 \| Mortality table Switzerland
Disclosure Of Defined Benefit Plans [Line Items]
Life expectancy at age 65 for a male member currently	[1]	21.7	21.6
Life expectancy at age 65 for a female member currently	[1]	23.4	23.6
UBS AG \| Switzerland \| aged 45 \| Mortality table Switzerland
Disclosure Of Defined Benefit Plans [Line Items]
Life expectancy at age 65 for a male member currently	[1]	23.2	23.1
Life expectancy at age 65 for a female member currently	[1]	24.9	25.1
UBS AG \| UK \| aged 65 \| Mortality table UK
Disclosure Of Defined Benefit Plans [Line Items]
Life expectancy at age 65 for a male member currently	[2]	23.4	23.3
Life expectancy at age 65 for a female member currently	[2]	24.9	25.1
UBS AG \| UK \| aged 45 \| Mortality table UK
Disclosure Of Defined Benefit Plans [Line Items]
Life expectancy at age 65 for a male member currently	[2]	24.6	24.5
Life expectancy at age 65 for a female member currently	[2]	26.3	26.4
UBS AG \| United States \| aged 65 \| Mortality table USA
Disclosure Of Defined Benefit Plans [Line Items]
Life expectancy at age 65 for a male member currently	[3]	21.8	22.8
Life expectancy at age 65 for a female member currently	[3]	23.2	24.4
UBS AG \| United States \| aged 45 \| Mortality table USA
Disclosure Of Defined Benefit Plans [Line Items]
Life expectancy at age 65 for a male member currently	[3]	23.2	24.3
Life expectancy at age 65 for a female member currently	[3]	24.5	25.9
UBS AG \| Germany \| aged 65 \| Mortality table Germany
Disclosure Of Defined Benefit Plans [Line Items]
Life expectancy at age 65 for a male member currently		20.8	20.7
Life expectancy at age 65 for a female member currently		24.3	24.2
UBS AG \| Germany \| aged 45 \| Mortality table Germany
Disclosure Of Defined Benefit Plans [Line Items]
Life expectancy at age 65 for a male member currently		23.6	23.5
Life expectancy at age 65 for a female member currently		26.5	26.4

[1]	In 2019, BVG 2015 G with CMI 2016 projections was used
[2]	In 2019, S2PA with CMI 2018 projections was used.
[3]	In 2019, RP-2014 WCHA with MP-2019 projection scale was used.

Defined benefit plans (Detail 9

Defined benefit plans (Detail 9) - USD ($) $ in Millions		12 Months Ended
Defined benefit plans (Detail 9) - USD ($) $ in Millions		Dec. 31, 2020		Dec. 31, 2019
Swiss pension plan \| Discount rate
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	$ (1,793)		$ (1,505)
Decrease by 50 basis points	[1]	2,048		1,710
Swiss pension plan \| Rate of salary increase
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	117		76
Decrease by 50 basis points	[1]	(111)		(73)
Swiss pension plan \| Rate of pension increase
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	1,413		1,221
Swiss pension plan \| Rate of interest credit on retirement savings
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	236		175
Decrease by 50 basis points	[1]	$ (188)	[2]	(102)
Portion of retirement savings subject to legal minimum interest rate		20.00%
Legal minimum interest rate on retirement savings		1.00%
Swiss pension plan \| Life expectancy
Increase / (decrease) in defined benefit obligation
Increase in longevity by one additional year	[1]	$ 1,061		886
UK pension plan \| Discount rate
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	(370)		(346)
Decrease by 50 basis points	[1]	423		395
UK pension plan \| Rate of pension increase
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	358		331
Decrease by 50 basis points	[1]	(316)		(299)
UK pension plan \| Life expectancy
Increase / (decrease) in defined benefit obligation
Increase in longevity by one additional year	[1]	182		154
US and German pension plans \| Discount rate
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	(91)		(86)
Decrease by 50 basis points	[1]	99		93
US and German pension plans \| Rate of salary increase
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	1		1
Decrease by 50 basis points	[1]	(1)		(1)
US and German pension plans \| Rate of pension increase
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	8		7
Decrease by 50 basis points	[1]	(7)		(7)
US and German pension plans \| Rate of interest credit on retirement savings
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	9		9
Decrease by 50 basis points	[1]	(8)		(9)
US and German pension plans \| Life expectancy
Increase / (decrease) in defined benefit obligation
Increase in longevity by one additional year	[1]	60		51
UBS AG \| Swiss pension plan \| Discount rate
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	(1,030)		(853)
Decrease by 50 basis points	[1]	1,181		972
UBS AG \| Swiss pension plan \| Rate of salary increase
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	74		49
Decrease by 50 basis points	[1]	(71)		(47)
UBS AG \| Swiss pension plan \| Rate of pension increase
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	793		673
UBS AG \| Swiss pension plan \| Rate of interest credit on retirement savings
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	142		107
Decrease by 50 basis points	[1]	$ (113)	[3]	(62)
Portion of retirement savings subject to legal minimum interest rate		17.70%
Legal minimum interest rate on retirement savings		1.00%
UBS AG \| Swiss pension plan \| Life expectancy
Increase / (decrease) in defined benefit obligation
Increase in longevity by one additional year	[1]	$ 566		459
UBS AG \| UK pension plan \| Discount rate
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	(370)		(346)
Decrease by 50 basis points	[1]	423		395
UBS AG \| UK pension plan \| Rate of pension increase
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	358		331
Decrease by 50 basis points	[1]	(316)		(299)
UBS AG \| UK pension plan \| Life expectancy
Increase / (decrease) in defined benefit obligation
Increase in longevity by one additional year	[1]	182		154
UBS AG \| US and German pension plans \| Discount rate
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	(91)		(86)
Decrease by 50 basis points	[1]	99		93
UBS AG \| US and German pension plans \| Rate of salary increase
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	1		1
Decrease by 50 basis points	[1]	(1)		(1)
UBS AG \| US and German pension plans \| Rate of pension increase
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	8		7
Decrease by 50 basis points	[1]	(7)		(7)
UBS AG \| US and German pension plans \| Rate of interest credit on retirement savings
Increase / (decrease) in defined benefit obligation
Increase by 50 basis points	[1]	9		9
Decrease by 50 basis points	[1]	(8)		(9)
UBS AG \| US and German pension plans \| Life expectancy
Increase / (decrease) in defined benefit obligation
Increase in longevity by one additional year	[1]	$ 60		$ 51

[1]	The sensitivity analyses are based on a change in one assumption while holding all other assumptions constant, so that interdependencies between the assumptions are excluded
[2]	As of 31 December 2020, 20% of retirement savings were subject to a legal minimum rate of 1.00%.
[3]	As of 31 December 2020, 17.7% of retirement savings were subject to a legal minimum rate of 1.00%.

Defined benefit plans (Detail 1

Defined benefit plans (Detail 10) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Total
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 38,100	$ 33,176
Swiss pension plan
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[1]	$ 32,590	$ 28,219
Plan asset allocation %		100.00%	100.00%
Swiss pension plan \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 219	$ 159
Plan asset allocation %		1.00%	1.00%
Swiss pension plan \| Real estate / property - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 3,582	$ 3,050
Plan asset allocation %		11.00%	11.00%
Swiss pension plan \| Real estate / property - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 331	$ 160
Plan asset allocation %		1.00%	1.00%
Swiss pension plan \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 826	$ 701
Plan asset allocation %		3.00%	2.00%
Swiss pension plan \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 8,242	$ 7,743
Plan asset allocation %		25.00%	27.00%
Swiss pension plan \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 3,721	$ 3,238
Plan asset allocation %	[2]	11.00%	11.00%
Swiss pension plan \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 6,146	$ 5,880
Plan asset allocation %	[2]	19.00%	21.00%
Swiss pension plan \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 1,303	$ 999
Plan asset allocation %	[2]	4.00%	4.00%
Swiss pension plan \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 7,085	$ 5,560
Plan asset allocation %		22.00%	20.00%
Swiss pension plan \| Other investments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 1,136	$ 729
Plan asset allocation %		3.00%	3.00%
Swiss pension plan \| Quoted in an active market
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 22,525	$ 19,206
Swiss pension plan \| Quoted in an active market \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		219	159
Swiss pension plan \| Quoted in an active market \| Real estate / property - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
Swiss pension plan \| Quoted in an active market \| Real estate / property - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
Swiss pension plan \| Quoted in an active market \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		826	701
Swiss pension plan \| Quoted in an active market \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		6,284	6,091
Swiss pension plan \| Quoted in an active market \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	3,721	3,238
Swiss pension plan \| Quoted in an active market \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	6,146	5,880
Swiss pension plan \| Quoted in an active market \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	1,303	999
Swiss pension plan \| Quoted in an active market \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		3,363	1,604
Swiss pension plan \| Quoted in an active market \| Other investments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		663	535
Swiss pension plan \| Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		10,065	9,014
Swiss pension plan \| Other \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
Swiss pension plan \| Other \| Real estate / property - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		3,582	3,050
Swiss pension plan \| Other \| Real estate / property - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		331	160
Swiss pension plan \| Other \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
Swiss pension plan \| Other \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		1,958	1,653
Swiss pension plan \| Other \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
Swiss pension plan \| Other \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
Swiss pension plan \| Other \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
Swiss pension plan \| Other \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		3,722	3,956
Swiss pension plan \| Other \| Other investments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		473	194
UK pension plan
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 4,149	$ 3,658
Plan asset allocation %		100.00%	100.00%
UK pension plan \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 195	$ 141
Plan asset allocation %		5.00%	4.00%
UK pension plan \| Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 2,150	$ 1,810
Plan asset allocation %	[2]	52.00%	49.00%
UK pension plan \| Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 53	$ 0
Plan asset allocation %	[2]	1.00%	0.00%
UK pension plan \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 37	$ 33
Plan asset allocation %		1.00%	1.00%
UK pension plan \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 1,077	$ 916
Plan asset allocation %		26.00%	25.00%
UK pension plan \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 1,050	$ 727
Plan asset allocation %	[2]	25.00%	20.00%
UK pension plan \| Investment funds - Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 47	$ 22
Plan asset allocation %	[2]	1.00%	1.00%
UK pension plan \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 149	$ 310
Plan asset allocation %	[2]	4.00%	8.00%
UK pension plan \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 110	$ 108
Plan asset allocation %	[2]	3.00%	3.00%
UK pension plan \| Investment funds - Real estate - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 114	$ 122
Plan asset allocation %		3.00%	3.00%
UK pension plan \| Investment funds - Real estate - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 37	$ 19
Plan asset allocation %		1.00%	1.00%
UK pension plan \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ (86)	$ 0
Plan asset allocation %		(2.00%)	0.00%
UK pension plan \| Insurance contracts
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 8	$ 7
Plan asset allocation %		0.00%	0.00%
UK pension plan \| Derivative financial instruments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ (3)	$ 3
Plan asset allocation %		0.00%	0.00%
UK pension plan \| Asset-backed securities
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 6	$ 6
Plan asset allocation %		0.00%	0.00%
UK pension plan \| Other investments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[3]	$ (794)	$ (565)
Plan asset allocation %	[3]	(19.00%)	(15.00%)
UK pension plan \| Quoted in an active market
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 3,940	$ 3,483
UK pension plan \| Quoted in an active market \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		195	141
UK pension plan \| Quoted in an active market \| Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	2,150	1,810
UK pension plan \| Quoted in an active market \| Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	53	0
UK pension plan \| Quoted in an active market \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		34	33
UK pension plan \| Quoted in an active market \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		1,077	916
UK pension plan \| Quoted in an active market \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	919	610
UK pension plan \| Quoted in an active market \| Investment funds - Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	47	22
UK pension plan \| Quoted in an active market \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	149	310
UK pension plan \| Quoted in an active market \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	110	108
UK pension plan \| Quoted in an active market \| Investment funds - Real estate - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		98	103
UK pension plan \| Quoted in an active market \| Investment funds - Real estate - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UK pension plan \| Quoted in an active market \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		(86)	0
UK pension plan \| Quoted in an active market \| Insurance contracts
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UK pension plan \| Quoted in an active market \| Derivative financial instruments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		(3)	3
UK pension plan \| Quoted in an active market \| Asset-backed securities
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UK pension plan \| Quoted in an active market \| Other investments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[3]	(803)	(572)
UK pension plan \| Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		209	175
UK pension plan \| Other \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UK pension plan \| Other \| Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UK pension plan \| Other \| Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UK pension plan \| Other \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		3	0
UK pension plan \| Other \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UK pension plan \| Other \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	131	117
UK pension plan \| Other \| Investment funds - Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UK pension plan \| Other \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UK pension plan \| Other \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UK pension plan \| Other \| Investment funds - Real estate - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		16	18
UK pension plan \| Other \| Investment funds - Real estate - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		37	19
UK pension plan \| Other \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UK pension plan \| Other \| Insurance contracts
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		8	7
UK pension plan \| Other \| Derivative financial instruments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UK pension plan \| Other \| Asset-backed securities
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		6	6
UK pension plan \| Other \| Other investments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[3]	9	7
US and German pension plans
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		1,360	1,299
US plans
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 1,360	$ 1,299
Plan asset allocation %		100.00%	100.00%
US plans \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 38	$ 27
Plan asset allocation %		3.00%	2.00%
US plans \| Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 490	$ 475
Plan asset allocation %	[2]	36.00%	37.00%
US plans \| Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 7	$ 2
Plan asset allocation %	[2]	0.00%	0.00%
US plans \| Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 99	$ 99
Plan asset allocation %	[2]	7.00%	8.00%
US plans \| Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 1	$ 3
Plan asset allocation %	[2]	0.00%	0.00%
US plans \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 210	$ 208
Plan asset allocation %		15.00%	16.00%
US plans \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 169	$ 161
Plan asset allocation %		12.00%	12.00%
US plans \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 195	$ 176
Plan asset allocation %	[2]	14.00%	14.00%
US plans \| Investment funds - Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 34	$ 28
Plan asset allocation %	[2]	2.00%	2.00%
US plans \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 19	$ 17
Plan asset allocation %	[2]	1.00%	1.00%
US plans \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 3	$ 3
Plan asset allocation %	[2]	0.00%	0.00%
US plans \| Investment funds - Real estate - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 14	$ 13
Plan asset allocation %		1.00%	1.00%
US plans \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 79	$ 69
Plan asset allocation %		6.00%	5.00%
US plans \| Insurance contracts
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 1	$ 18
Plan asset allocation %		0.00%	1.00%
US plans \| Quoted in an active market
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 1,345	$ 1,268
US plans \| Quoted in an active market \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		38	27
US plans \| Quoted in an active market \| Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	490	475
US plans \| Quoted in an active market \| Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	7	2
US plans \| Quoted in an active market \| Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	99	99
US plans \| Quoted in an active market \| Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	1	3
US plans \| Quoted in an active market \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		210	208
US plans \| Quoted in an active market \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		169	161
US plans \| Quoted in an active market \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	195	176
US plans \| Quoted in an active market \| Investment funds - Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	34	28
US plans \| Quoted in an active market \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	19	17
US plans \| Quoted in an active market \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	3	3
US plans \| Quoted in an active market \| Investment funds - Real estate - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
US plans \| Quoted in an active market \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		79	69
US plans \| Quoted in an active market \| Insurance contracts
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
US plans \| Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		15	31
US plans \| Other \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
US plans \| Other \| Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
US plans \| Other \| Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
US plans \| Other \| Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
US plans \| Other \| Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
US plans \| Other \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
US plans \| Other \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
US plans \| Other \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
US plans \| Other \| Investment funds - Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
US plans \| Other \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
US plans \| Other \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
US plans \| Other \| Investment funds - Real estate - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		14	13
US plans \| Other \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
US plans \| Other \| Insurance contracts
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		1	18
UBS AG \| Total
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		23,867	20,864
UBS AG \| Swiss pension plan
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 18,358	$ 15,908	[4]
Plan asset allocation %		100.00%	100.00%
UBS AG \| Swiss pension plan \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 123	$ 90
Plan asset allocation %		1.00%	1.00%
UBS AG \| Swiss pension plan \| Real estate / property - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 2,018	$ 1,720
Plan asset allocation %		11.00%	11.00%
UBS AG \| Swiss pension plan \| Real estate / property - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 186	$ 90
Plan asset allocation %		1.00%	1.00%
UBS AG \| Swiss pension plan \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 465	$ 395
Plan asset allocation %		3.00%	2.00%
UBS AG \| Swiss pension plan \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 4,642	$ 4,365
Plan asset allocation %		25.00%	27.00%
UBS AG \| Swiss pension plan \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 2,096	$ 1,825
Plan asset allocation %	[2]	11.00%	11.00%
UBS AG \| Swiss pension plan \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 3,462	$ 3,315
Plan asset allocation %	[2]	19.00%	21.00%
UBS AG \| Swiss pension plan \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 734	$ 563
Plan asset allocation %	[2]	4.00%	4.00%
UBS AG \| Swiss pension plan \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 3,991	$ 3,134
Plan asset allocation %		22.00%	20.00%
UBS AG \| Swiss pension plan \| Other investments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 640	$ 411
Plan asset allocation %		3.00%	3.00%
UBS AG \| Swiss pension plan \| Quoted in an active market
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 12,688	$ 10,827
UBS AG \| Swiss pension plan \| Quoted in an active market \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		123	90
UBS AG \| Swiss pension plan \| Quoted in an active market \| Real estate / property - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UBS AG \| Swiss pension plan \| Quoted in an active market \| Real estate / property - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UBS AG \| Swiss pension plan \| Quoted in an active market \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		465	395
UBS AG \| Swiss pension plan \| Quoted in an active market \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		3,540	3,433
UBS AG \| Swiss pension plan \| Quoted in an active market \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	2,096	1,825
UBS AG \| Swiss pension plan \| Quoted in an active market \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	3,462	3,315
UBS AG \| Swiss pension plan \| Quoted in an active market \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	734	563
UBS AG \| Swiss pension plan \| Quoted in an active market \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		1,894	904
UBS AG \| Swiss pension plan \| Quoted in an active market \| Other investments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		373	301
UBS AG \| Swiss pension plan \| Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		5,670	5,081
UBS AG \| Swiss pension plan \| Other \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UBS AG \| Swiss pension plan \| Other \| Real estate / property - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		2,018	1,720
UBS AG \| Swiss pension plan \| Other \| Real estate / property - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		186	90
UBS AG \| Swiss pension plan \| Other \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UBS AG \| Swiss pension plan \| Other \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		1,103	932
UBS AG \| Swiss pension plan \| Other \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UBS AG \| Swiss pension plan \| Other \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UBS AG \| Swiss pension plan \| Other \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UBS AG \| Swiss pension plan \| Other \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		2,097	2,230
UBS AG \| Swiss pension plan \| Other \| Other investments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		266	109
UBS AG \| UK pension plan
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 4,149	$ 3,658
Plan asset allocation %		100.00%	100.00%
UBS AG \| UK pension plan \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 195	$ 141
Plan asset allocation %		5.00%	4.00%
UBS AG \| UK pension plan \| Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 2,150	$ 1,810
Plan asset allocation %	[2]	52.00%	49.00%
UBS AG \| UK pension plan \| Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 53	$ 0
Plan asset allocation %	[2]	1.00%	0.00%
UBS AG \| UK pension plan \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 37	$ 33
Plan asset allocation %		1.00%	1.00%
UBS AG \| UK pension plan \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 1,077	$ 916
Plan asset allocation %		26.00%	25.00%
UBS AG \| UK pension plan \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 1,050	$ 727
Plan asset allocation %	[2]	25.00%	20.00%
UBS AG \| UK pension plan \| Investment funds - Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 47	$ 22
Plan asset allocation %	[2]	1.00%	1.00%
UBS AG \| UK pension plan \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 149	$ 310
Plan asset allocation %	[2]	4.00%	8.00%
UBS AG \| UK pension plan \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 110	$ 108
Plan asset allocation %	[2]	3.00%	3.00%
UBS AG \| UK pension plan \| Investment funds - Real estate - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 114	$ 122
Plan asset allocation %		3.00%	3.00%
UBS AG \| UK pension plan \| Investment funds - Real estate - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 37	$ 1
Plan asset allocation %		1.00%	1.00%
UBS AG \| UK pension plan \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ (86)	$ (2)
Plan asset allocation %		(2.00%)	0.00%
UBS AG \| UK pension plan \| Insurance contracts
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 8	$ 0
Plan asset allocation %		0.00%	0.00%
UBS AG \| UK pension plan \| Derivative financial instruments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ (3)	$ 3
Plan asset allocation %		0.00%	0.00%
UBS AG \| UK pension plan \| Asset-backed securities
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 6	$ 6
Plan asset allocation %		0.00%	0.00%
UBS AG \| UK pension plan \| Other investments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[3]	$ (794)	$ (565)
Plan asset allocation %	[3]	(19.00%)	(15.00%)
UBS AG \| UK pension plan \| Quoted in an active market
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 3,940	$ 3,483
UBS AG \| UK pension plan \| Quoted in an active market \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		195	141
UBS AG \| UK pension plan \| Quoted in an active market \| Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	2,150	1,810
UBS AG \| UK pension plan \| Quoted in an active market \| Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	53	0
UBS AG \| UK pension plan \| Quoted in an active market \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		34	33
UBS AG \| UK pension plan \| Quoted in an active market \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		1,077	916
UBS AG \| UK pension plan \| Quoted in an active market \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	919	610
UBS AG \| UK pension plan \| Quoted in an active market \| Investment funds - Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	47	22
UBS AG \| UK pension plan \| Quoted in an active market \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	149	310
UBS AG \| UK pension plan \| Quoted in an active market \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	110	108
UBS AG \| UK pension plan \| Quoted in an active market \| Investment funds - Real estate - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		98	103
UBS AG \| UK pension plan \| Quoted in an active market \| Investment funds - Real estate - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UBS AG \| UK pension plan \| Quoted in an active market \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		(86)	0
UBS AG \| UK pension plan \| Quoted in an active market \| Insurance contracts
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UBS AG \| UK pension plan \| Quoted in an active market \| Derivative financial instruments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		(3)	3
UBS AG \| UK pension plan \| Quoted in an active market \| Asset-backed securities
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UBS AG \| UK pension plan \| Quoted in an active market \| Other investments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[3]	(803)	(572)
UBS AG \| UK pension plan \| Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		209	175
UBS AG \| UK pension plan \| Other \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UBS AG \| UK pension plan \| Other \| Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UBS AG \| UK pension plan \| Other \| Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UBS AG \| UK pension plan \| Other \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		3	0
UBS AG \| UK pension plan \| Other \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UBS AG \| UK pension plan \| Other \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	131	117
UBS AG \| UK pension plan \| Other \| Investment funds - Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UBS AG \| UK pension plan \| Other \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UBS AG \| UK pension plan \| Other \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UBS AG \| UK pension plan \| Other \| Investment funds - Real estate - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		16	18
UBS AG \| UK pension plan \| Other \| Investment funds - Real estate - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		37	19
UBS AG \| UK pension plan \| Other \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UBS AG \| UK pension plan \| Other \| Insurance contracts
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		8	7
UBS AG \| UK pension plan \| Other \| Derivative financial instruments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UBS AG \| UK pension plan \| Other \| Asset-backed securities
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		6	6
UBS AG \| UK pension plan \| Other \| Other investments
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[3]	9	7
UBS AG \| US and German pension plans
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		1,360	1,299
UBS AG \| US plans
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 1,360	$ 1,299
Plan asset allocation %		100.00%	100.00%
UBS AG \| US plans \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 38	$ 27
Plan asset allocation %		3.00%	2.00%
UBS AG \| US plans \| Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 490	$ 475
Plan asset allocation %	[2]	36.00%	37.00%
UBS AG \| US plans \| Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 7	$ 2
Plan asset allocation %	[2]	0.00%	0.00%
UBS AG \| US plans \| Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 99	$ 99
Plan asset allocation %	[2]	7.00%	8.00%
UBS AG \| US plans \| Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 1	$ 3
Plan asset allocation %	[2]	0.00%	0.00%
UBS AG \| US plans \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 210	$ 208
Plan asset allocation %		15.00%	16.00%
UBS AG \| US plans \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 169	$ 161
Plan asset allocation %		12.00%	12.00%
UBS AG \| US plans \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 195	$ 176
Plan asset allocation %	[2]	14.00%	14.00%
UBS AG \| US plans \| Investment funds - Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 34	$ 28
Plan asset allocation %	[2]	2.00%	2.00%
UBS AG \| US plans \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 19	$ 17
Plan asset allocation %	[2]	1.00%	1.00%
UBS AG \| US plans \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	$ 3	$ 3
Plan asset allocation %	[2]	0.00%	0.00%
UBS AG \| US plans \| Investment funds - Real estate - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 14	$ 13
Plan asset allocation %		1.00%	1.00%
UBS AG \| US plans \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 79	$ 69
Plan asset allocation %		6.00%	5.00%
UBS AG \| US plans \| Insurance contracts
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 1	$ 18
Plan asset allocation %		0.00%	1.00%
UBS AG \| US plans \| Quoted in an active market
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 1,345	$ 1,268
UBS AG \| US plans \| Quoted in an active market \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		38	27
UBS AG \| US plans \| Quoted in an active market \| Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	490	475
UBS AG \| US plans \| Quoted in an active market \| Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	7	2
UBS AG \| US plans \| Quoted in an active market \| Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	99	99
UBS AG \| US plans \| Quoted in an active market \| Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	1	3
UBS AG \| US plans \| Quoted in an active market \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		210	208
UBS AG \| US plans \| Quoted in an active market \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		169	161
UBS AG \| US plans \| Quoted in an active market \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	195	176
UBS AG \| US plans \| Quoted in an active market \| Investment funds - Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	34	28
UBS AG \| US plans \| Quoted in an active market \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	19	17
UBS AG \| US plans \| Quoted in an active market \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	3	3
UBS AG \| US plans \| Quoted in an active market \| Investment funds - Real estate - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UBS AG \| US plans \| Quoted in an active market \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		79	69
UBS AG \| US plans \| Quoted in an active market \| Insurance contracts
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UBS AG \| US plans \| Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		15	31
UBS AG \| US plans \| Other \| Cash and cash equivalents
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UBS AG \| US plans \| Other \| Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UBS AG \| US plans \| Other \| Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UBS AG \| US plans \| Other \| Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UBS AG \| US plans \| Other \| Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UBS AG \| US plans \| Other \| Investment funds - Equity - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UBS AG \| US plans \| Other \| Investment funds - Equity - Foreign
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UBS AG \| US plans \| Other \| Investment funds - Bonds - Domestic, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UBS AG \| US plans \| Other \| Investment funds - Bonds - Domestic, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UBS AG \| US plans \| Other \| Investment funds - Bonds - Foreign, AAA to BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UBS AG \| US plans \| Other \| Investment funds - Bonds - Foreign, below BBB-
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value	[2]	0	0
UBS AG \| US plans \| Other \| Investment funds - Real estate - Domestic
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		14	13
UBS AG \| US plans \| Other \| Investment funds - Other
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		0	0
UBS AG \| US plans \| Other \| Insurance contracts
Disclosure Of Fair Value Of Plan Assets [Line Items]
Fair value		$ 1	$ 18

[1]	Bank accounts at UBS encompass accounts in the name of the Swiss pension fund. The other positions disclosed in the table encompass both direct investments in UBS instruments and indirect investments, i.e., those made through funds that the pension fund invests in.
[2]	The bond credit ratings are primarily based on Standard & Poor’s credit ratings. Ratings AAA to BBB– and below BBB– represent investment grade and non-investment grade ratings, respectively. In cases where credit ratings from other rating agencies were used, these were converted to the equivalent rating in Standard & Poor’s rating classification
[3]	Mainly relates to repurchase arrangements on UK treasury bonds.
[4]	Bank accounts at UBS AG encompass accounts in the name of the Swiss pension fund. The other positions disclosed in the table encompass both direct investments in UBS AG instruments and UBS Group AG shares and indirect investments, i.e., those made through funds that the pension fund invests in.

Defined benefit plans (Detail_5

Defined benefit plans (Detail 11) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Total
Plan Assets At Fair Value By Plan [Line Items]
Fair value		$ 38,100	$ 33,176
Swiss pension plan
Plan Assets At Fair Value By Plan [Line Items]
Fair value	[1]	32,590	28,219
Derivative financial instruments, net of collateral		(17)	6
Swiss pension plan \| Bank accounts at UBS
Plan Assets At Fair Value By Plan [Line Items]
Fair value	[1]	231	159
Swiss pension plan \| UBS debt instruments
Plan Assets At Fair Value By Plan [Line Items]
Fair value	[1]	34	7
Swiss pension plan \| UBS shares
Plan Assets At Fair Value By Plan [Line Items]
Fair value	[1]	24	21
Swiss pension plan \| Securities lent to UBS
Plan Assets At Fair Value By Plan [Line Items]
Fair value	[1],[2]	1,416	1,328
Swiss pension plan \| Property occupied by UBS
Plan Assets At Fair Value By Plan [Line Items]
Fair value	[1]	96	88
Swiss pension plan \| Derivative financial instruments, counterparty UBS
Plan Assets At Fair Value By Plan [Line Items]
Fair value	[1],[2]	149	10
UK pension plan
Plan Assets At Fair Value By Plan [Line Items]
Fair value		4,149	3,658
US and German pension plans
Plan Assets At Fair Value By Plan [Line Items]
Fair value		1,360	1,299
UBS AG \| Total
Plan Assets At Fair Value By Plan [Line Items]
Fair value		23,867	20,864
UBS AG \| Swiss pension plan
Plan Assets At Fair Value By Plan [Line Items]
Fair value		18,358	15,908	[3]
Derivative financial instruments, net of collateral		(9)	3
UBS AG \| Swiss pension plan \| Bank accounts at UBS
Plan Assets At Fair Value By Plan [Line Items]
Fair value	[3]	130	90
UBS AG \| Swiss pension plan \| UBS debt instruments
Plan Assets At Fair Value By Plan [Line Items]
Fair value	[3]	19	4
UBS AG \| Swiss pension plan \| UBS shares
Plan Assets At Fair Value By Plan [Line Items]
Fair value	[3]	13	12
UBS AG \| Swiss pension plan \| Securities lent to UBS
Plan Assets At Fair Value By Plan [Line Items]
Fair value	[3],[4]	796	748
UBS AG \| Swiss pension plan \| Property occupied by UBS
Plan Assets At Fair Value By Plan [Line Items]
Fair value	[3]	54	50
UBS AG \| Swiss pension plan \| Derivative financial instruments, counterparty UBS
Plan Assets At Fair Value By Plan [Line Items]
Fair value	[3],[4]	84	6
UBS AG \| UK pension plan
Plan Assets At Fair Value By Plan [Line Items]
Fair value		4,149	3,658
UBS AG \| US and German pension plans
Plan Assets At Fair Value By Plan [Line Items]
Fair value		$ 1,360	$ 1,299

[1]	Bank accounts at UBS encompass accounts in the name of the Swiss pension fund. The other positions disclosed in the table encompass both direct investments in UBS instruments and indirect investments, i.e., those made through funds that the pension fund invests in.
[2]	Securities lent to UBS and derivative financial instruments are presented gross of any collateral. Securities lent to UBS were fully covered by collateral as of 31 December 2020 and 31 December 2019. Net of collateral, derivative financial instruments amounted to negative USD 17 million as of 31 December 2020 (31 December 2019: positive USD 6 million).
[3]	Bank accounts at UBS AG encompass accounts in the name of the Swiss pension fund. The other positions disclosed in the table encompass both direct investments in UBS AG instruments and UBS Group AG shares and indirect investments, i.e., those made through funds that the pension fund invests in.
[4]	Securities lent to UBS AG and derivative financial instruments are presented gross of any collateral. Securities lent to UBS AG were fully covered by collateral as of 31 December 2020 and 31 December 2019. Net of collateral, derivative financial instruments amounted to negative USD 9 million as of 31 December 2020 (31 December 2019: positive USD 3 million).

Related party disclosure (Detai

Related party disclosure (Detail 12) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Received by UBS
Fees	$ 34	$ 34	$ 35
Paid by UBS
Rent	5	4	4
Dividends, capital repayments and interest	10	11	10
UBS AG
Received by UBS
Fees	19	19	22
Paid by UBS
Rent	3	2	3
Dividends, capital repayments and interest	$ 10	$ 10	$ 10

Related party disclosure (Det_2

Related party disclosure (Detail 13) - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Financial instruments bought by pension funds
UBS shares (in thousands of shares)	1,758	967
UBS debt instruments (par values)	$ 28	$ 2
Financial instruments sold by pension funds or matured
UBS shares (in thousands of shares)	2,605	1,977
UBS debt instruments (par values)	$ 6	$ 8
UBS shares held by post-employment benefit plans
Number of shares (in thousands of shares)	14,854	15,701
Fair value	$ 210	$ 198
UBS AG
Financial instruments bought by pension funds
UBS shares (in thousands of shares)	1,677	929
UBS AG debt instruments (par values)	$ 16	$ 1
Financial instruments sold by pension funds or matured
UBS shares (in thousands of shares)	2,556	1,778
UBS AG debt instruments (par values)	$ 4	$ 5
UBS shares held by post-employment benefit plans
Number of shares (in thousands of shares)	14,112	14,991
Fair value	$ 199	$ 189

Employee benefits_ variable c_3

Employee benefits: variable compensation (Narrative) (Detail 1)	12 Months Ended
	Dec. 31, 2020
Deferred Contingent Capital Plan
Equity Participation And Other Compensation Plans [Line Items]
Description of other non-share-based compensation plans	Deferred Contingent Capital Plan (DCCP) The DCCP is a mandatory deferred compensation plan for all employees whose total annual compensation exceeds a specified threshold. DCCP awards take the form of notional additional tier 1 (AT1) capital instruments, which, at the discretion of UBS, can be settled in either a cash payment or a perpetual, marketable AT1 capital instrument. DCCP awards vest in full after five years, and up to seven years for certain regulated employees, unless there is a trigger event. Awards are forfeited if a viability event occurs, i.e., if FINMA notifies the firm in writing that the DCCP awards must be written down to prevent an insolvency, bankruptcy or failure of UBS, or if UBS receives a commitment of extraordinary support from the public sector that is necessary to prevent such an event. DCCP awards are also written down for GEB members if the Group’s CET1 capital ratio falls below 10% and for all other employees if it falls below 7%. As an additional performance condition, GEB members forfeit 20% of their award for each loss-making year during the vesting period. Interest payments on DCCP awards are paid at the discretion of UBS. Where interest payments are not permitted, such as for certain regulated employees, the DCCP award reflects the fair value of the granted non-interest-bearing award.
Minimum CET1 capital ratio to trigger a write-down of awards granted under the DCCP for GEB members	10.00%
Minimum CET1 capital ratio to trigger a write-down of awards granted under the DCCP for non-GEB members	7.00%
Percentage of awards that GEB members forfeit for each year during the vesting period in which UBS does not achieve an adjusted profit before tax	20.00%
Description of vesting requirements for non-share-based compensation plans	DCCP awards vest in full after five years, and up to seven years for certain regulated employees, unless there is a trigger event.
Financial advisor variable compensation
Equity Participation And Other Compensation Plans [Line Items]
Description of other non-share-based compensation plans	Financial advisor variable compensation In line with market practice for US wealth management businesses, the compensation for US financial advisors in Global Wealth Management is composed of production payout and deferred compensation awards. Production payout is primarily based on compensable revenue. Financial advisors may also qualify for deferred compensation awards, which generally vest over a six-year period. The awards are based on strategic performance measures, including production, length of service with the firm and net new business. Production payout rates and deferred compensation awards may be reduced for, among other things, errors, negligence or carelessness, or a failure to comply with the firm’s rules, standards, practices and / or policies and / or applicable laws and regulations.
Description of vesting requirements for non-share-based compensation plans	Financial advisors may also qualify for deferred compensation awards, which generally vest over a six-year period.
GrowthPlus
Equity Participation And Other Compensation Plans [Line Items]
Description of other non-share-based compensation plans	GrowthPlus GrowthPlus is a compensation plan for selected financial advisors whose revenue production and length of service exceeded defined thresholds from 2010 through 2017. Awards were granted in 2010, 2011, 2015 and 2018. The awards are cash-based and are distributed over seven years, with the exception of 2018 awards, which are distributed over five years.
Awards distribution period for non-2018 arrangements	7 years
Awards distribution period for 2018 arrangements	5 years
PartnerPlus
Equity Participation And Other Compensation Plans [Line Items]
Description of other non-share-based compensation plans	PartnerPlus Through performance year 2016, financial advisor strategic objective awards were partly granted under the PartnerPlus deferred cash plan, which included amounts awarded by UBS, as well as voluntary participant contributions. Company contributions and voluntary contributions were credited with interest in accordance with the terms of the plan, or upon election credited with notional earnings based on the performance of various mutual funds. Company contributions and interest on both company and voluntary contributions ratably vest in 20% installments 6 to 10 years following grant date. Company contributions and interest on notional earnings on both company and voluntary contributions are forfeitable under certain circumstances.
Description of vesting requirements for non-share-based compensation plans	Company contributions and interest on both company and voluntary contributions ratably vest in 20% installments 6 to 10 years following grant date.
Equity Ownership Plan
Equity Participation And Other Compensation Plans [Line Items]
Description of share-based compensation plans	Equity Ownership Plan (EOP) The EOP is a mandatory deferred share-based compensation plan for all employees whose total annual compensation exceeds a specified threshold, other than GEB members, Group Managing Directors (GMDs) and Group or Divisional Vice Chair role holders who are granted share-based awards under the new Long-Term Incentive Plan (LTIP) first granted in 2020. Awards generally vest in equal installments after two and three years following grant, provided that vesting conditions are satisfied. Awards granted to GEB members in 2019 and prior years generally vest three, four and five years after grant. EOP awards granted to GEB members and GMDs in 2019 and prior years, as well as EOP awards granted to certain other employees will only vest if certain performance measures both for the Group and the applicable business division are met. In order to align deferred compensation of certain Asset Management employees with the performance of the investment funds they manage, awards are granted to such employees in the form of cash-settled notional investment funds. The amount delivered depends on the value of the underlying investment funds at the time of vesting. Certain awards, such as replacement awards issued outside the normal performance year cycle, may take the form of deferred cash under the EOP plan rules.
Description Of Vesting Requirements For Sharebased Payment Arrangement	Awards generally vest in equal installments after two and three years following grant, provided that vesting conditions are satisfied. Awards granted to GEB members in 2019 and prior years generally vest three, four and five years after grant.
Long-Term Incentive Plan
Equity Participation And Other Compensation Plans [Line Items]
Description of share-based compensation plans	Long-Term Incentive Plan The LTIP is a mandatory deferred share-based compensation plan for GEB members, GMDs and Group or Divisional Vice Chair role holders. The final number of notional shares delivered at vesting depends on two equally-weighted performance metrics: reported return on common equity tier 1 capital (RoCET1) and relative total shareholder return (rTSR), which measures the performance of the UBS share against an index consisting of Global Systemically Important Banks as determined by the Financial Stability Board. The final number of shares as determined at the end of the three-year performance period will vest in three equal installments in each of the three years following the performance period for GEB members, and cliff vest in the first year following the performance period for GMDs and Vice Chair role holders.
Description Of Vesting Requirements For Sharebased Payment Arrangement	The final number of shares as determined at the end of the three-year performance period will vest in three equal installments in each of the three years following the performance period for GEB members, and cliff vest in the first year following the performance period for GMDs and Vice Chair role holders.
Role-based allowances
Equity Participation And Other Compensation Plans [Line Items]
Description of share-based compensation plans	Role-based allowances Some employees may receive a role-based allowance in addition to their base salary. This allowance reflects the market value of a specific role and is fixed, non-forfeitable compensation. Unlike salary, a role-based allowance is paid only as long as the employee is in a specific role. Role-based allowances consist of a cash portion and, where applicable, a blocked UBS share award. The compensation expense is recognized in the year of grant.
Equity Plus Plan
Equity Participation And Other Compensation Plans [Line Items]
Description of share-based compensation plans	Equity Plus Plan The Equity Plus Plan is a voluntary employee share purchase program that allows eligible employees to purchase UBS shares at market price and receive one additional notional share for every three shares purchased, up to a maximum annual limit. Additional shares vest after a maximum of three years, provided the employee remains employed with UBS and has retained the purchased shares throughout the holding period.
UBS AG \| Deferred Contingent Capital Plan
Equity Participation And Other Compensation Plans [Line Items]
Description of other non-share-based compensation plans	Deferred Contingent Capital Plan (DCCP) The DCCP is a mandatory deferred compensation plan for all employees whose total annual compensation exceeds a specified threshold. DCCP awards take the form of notional additional tier 1 (AT1) capital instruments, which, at the discretion of UBS, can be settled in either a cash payment or a perpetual, marketable AT1 capital instrument. DCCP awards vest in full after five years, and up to seven years for certain regulated employees, unless there is a trigger event. Awards are forfeited if a viability event occurs, i.e., if FINMA notifies the firm in writing that the DCCP awards must be written down to prevent an insolvency, bankruptcy or failure of UBS, or if UBS receives a commitment of extraordinary support from the public sector that is necessary to prevent such an event. DCCP awards are also written down for GEB members if the Group’s CET1 capital ratio falls below 10% and for all other employees if it falls below 7%. As an additional performance condition, GEB members forfeit 20% of their award for each loss-making year during the vesting period. Interest payments on DCCP awards are paid at the discretion of UBS. Where interest payments are not permitted, such as for certain regulated employees, the DCCP award reflects the fair value of the granted non-interest-bearing award.
Minimum CET1 capital ratio to trigger a write-down of awards granted under the DCCP for GEB members	10.00%
Minimum CET1 capital ratio to trigger a write-down of awards granted under the DCCP for non-GEB members	7.00%
Percentage of awards that GEB members forfeit for each year during the vesting period in which UBS does not achieve an adjusted profit before tax	20.00%
Description of vesting requirements for non-share-based compensation plans	DCCP awards vest in full after five years, and up to seven years for certain regulated employees, unless there is a trigger event.
UBS AG \| Financial advisor variable compensation
Equity Participation And Other Compensation Plans [Line Items]
Description of other non-share-based compensation plans	Financial advisor variable compensation In line with market practice for US wealth management businesses, the compensation for US financial advisors in Global Wealth Management is composed of production payout and deferred compensation awards. Production payout is primarily based on compensable revenue. Financial advisors may also qualify for deferred compensation awards, which generally vest over a six-year period. The awards are based on strategic performance measures, including production, length of service with the firm and net new business. Production payout rates and deferred compensation awards may be reduced for, among other things, errors, negligence or carelessness, or a failure to comply with the firm’s rules, standards, practices and / or policies and / or applicable laws and regulations.
Description of vesting requirements for non-share-based compensation plans	Financial advisors may also qualify for deferred compensation awards, which generally vest over a six-year period.
UBS AG \| GrowthPlus
Equity Participation And Other Compensation Plans [Line Items]
Description of other non-share-based compensation plans	GrowthPlus GrowthPlus is a compensation plan for selected financial advisors whose revenue production and length of service exceeded defined thresholds from 2010 through 2017. Awards were granted in 2010, 2011, 2015 and 2018. The awards are cash-based and are distributed over seven years, with the exception of 2018 awards, which are distributed over five years.
Awards distribution period for non-2018 arrangements	7 years
Awards distribution period for 2018 arrangements	5 years
UBS AG \| PartnerPlus
Equity Participation And Other Compensation Plans [Line Items]
Description of other non-share-based compensation plans	PartnerPlus Through performance year 2016, financial advisor strategic objective awards were partly granted under the PartnerPlus deferred cash plan, which included amounts awarded by UBS, as well as voluntary participant contributions. Company contributions and voluntary contributions were credited with interest in accordance with the terms of the plan, or upon election credited with notional earnings based on the performance of various mutual funds. Company contributions and interest on both company and voluntary contributions ratably vest in 20% installments 6 to 10 years following grant date. Company contributions and interest on notional earnings on both company and voluntary contributions are forfeitable under certain circumstances.
Description of vesting requirements for non-share-based compensation plans	Company contributions and interest on both company and voluntary contributions ratably vest in 20% installments 6 to 10 years following grant date.
UBS AG \| Equity Ownership Plan
Equity Participation And Other Compensation Plans [Line Items]
Description of share-based compensation plans	Equity Ownership Plan (EOP) The EOP is a mandatory deferred share-based compensation plan for all employees whose total annual compensation exceeds a specified threshold, other than GEB members, Group Managing Directors (GMDs) and Group or Divisional Vice Chair role holders who are granted share-based awards under the new Long-Term Incentive Plan (LTIP) first granted in 2020. Awards generally vest in equal installments after two and three years following grant, provided that vesting conditions are satisfied. Awards granted to GEB members in 2019 and prior years generally vest three, four and five years after grant. EOP awards granted to GEB members and GMDs in 2019 and prior years, as well as EOP awards granted to certain other employees will only vest if certain performance measures both for the Group and the applicable business division are met. In order to align deferred compensation of certain Asset Management employees with the performance of the investment funds they manage, awards are granted to such employees in the form of cash-settled notional investment funds. The amount delivered depends on the value of the underlying investment funds at the time of vesting. Certain awards, such as replacement awards issued outside the normal performance year cycle, may take the form of deferred cash under the EOP plan rules.
Description Of Vesting Requirements For Sharebased Payment Arrangement	Awards generally vest in equal installments after two and three years following grant, provided that vesting conditions are satisfied. Awards granted to GEB members in 2019 and prior years generally vest three, four and five years after grant.
UBS AG \| Long-Term Incentive Plan
Equity Participation And Other Compensation Plans [Line Items]
Description of share-based compensation plans	Long-Term Incentive Plan The LTIP is a mandatory deferred share-based compensation plan for GEB members, GMDs and Group or Divisional Vice Chair role holders. The final number of notional shares delivered at vesting depends on two equally-weighted performance metrics: reported return on common equity tier 1 capital (RoCET1) and relative total shareholder return (rTSR), which measures the performance of the UBS share against an index consisting of Global Systemically Important Banks as determined by the Financial Stability Board. The final number of shares as determined at the end of the three-year performance period will vest in three equal installments in each of the three years following the performance period for GEB members, and cliff vest in the first year following the performance period for GMDs and Vice Chair role holders.
Description Of Vesting Requirements For Sharebased Payment Arrangement	The final number of shares as determined at the end of the three-year performance period will vest in three equal installments in each of the three years following the performance period for GEB members, and cliff vest in the first year following the performance period for GMDs and Vice Chair role holders.
UBS AG \| Role-based allowances
Equity Participation And Other Compensation Plans [Line Items]
Description of share-based compensation plans	Role-based allowances Some employees may receive a role-based allowance in addition to their base salary. This allowance reflects the market value of a specific role and is fixed, non-forfeitable compensation. Unlike salary, a role-based allowance is paid only as long as the employee is in a specific role. Role-based allowances consist of a cash portion and, where applicable, a blocked UBS share award. The compensation expense is recognized in the year of grant.
UBS AG \| Equity Plus Plan
Equity Participation And Other Compensation Plans [Line Items]
Description of share-based compensation plans	Equity Plus Plan The Equity Plus Plan is a voluntary employee share purchase program that allows eligible employees to purchase UBS shares at market price and receive one additional notional share for every three shares purchased, up to a maximum annual limit. Additional shares vest after a maximum of three years, provided the employee remains employed with UBS and has retained the purchased shares throughout the holding period.

Employee benefits_ variable c_4

Employee benefits: variable compensation (Narrative) (Detail 2) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Description of when the majority of awards were granted	February 2021
Weighted average discount for share and performance share awards granted	23.80%	22.60%
Carrying amount of liability related to cash-settled share-based awards	$ 36	$ 34
Unvested share-based awards
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Weighted average remaining contractual term (years)	2.9
UBS AG
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Description of when the majority of awards were granted	February 2021
Weighted average discount for share and performance share awards granted	23.80%	22.60%
Carrying amount of liability related to cash-settled share-based awards	$ 1	$ 1
UBS AG \| Unvested share-based awards
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Weighted average remaining contractual term (years)	2.9

Employee benefits_ variable c_5

Employee benefits: variable compensation - Effect on income statement (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		$ 7,520	[1]	$ 7,045	[2]	$ 7,292	[3]
Variable compensation including FA variable compensation deferred to the next and following years		4,524	[4]	4,259	[5]	4,694	[6]
Variable compensation including FA variable compensation related to share-based compensation		686		610		634
Variable compensation including FA variable compensation related to share-based compensation - performance awards		517		461		526
Variable compensation including FA variable compensation related to share-based compensation - other variable compensation		50		43		12
Variable compensation including FA variable compensation related to share-based compensation - financial advisor variable compensation		119		106		95
Variable compensation including FA variable compensation related to share-based compensation recognized within other Note 6 expense categories		100		61		49
Salaries related to share-based compensation		4		10		15
Social security related to share-based compensation		54		25		8
Personnel expenses related to share-based compensation - Equity Plus Plan		42		27		26
Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		6,012		5,617		5,889
Variable compensation including FA variable compensation deferred to the next and following years		1,760	[4]	1,093	[5]	1,250	[6]
Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		1,508		1,428		1,403
Variable compensation including FA variable compensation deferred to the next and following years		2,764	[4]	3,166	[5]	3,444	[6]
Variable compensation - performance awards
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		3,209		2,755		2,995
Variable compensation including FA variable compensation deferred to the next and following years		1,044	[4]	1,036	[5]	1,238	[6]
Variable compensation - performance awards \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		2,508		2,193		2,461
Variable compensation including FA variable compensation deferred to the next and following years		756	[4]	429	[5]	585	[6]
Variable compensation - performance awards \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		701		562		534
Variable compensation including FA variable compensation deferred to the next and following years		288	[4]	608	[5]	653	[6]
Non-deferred cash
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		2,141		1,868		2,057
Variable compensation including FA variable compensation deferred to the next and following years		0	[4]	0	[5]	0	[6]
Non-deferred cash \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		2,167		1,894		2,089
Variable compensation including FA variable compensation deferred to the next and following years		0	[4]	0	[5]	0	[6]
Non-deferred cash \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		(26)		(26)		(32)
Variable compensation including FA variable compensation deferred to the next and following years		0	[4]	0	[5]	0	[6]
Deferred compensation awards
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		1,068		887		938
Variable compensation including FA variable compensation deferred to the next and following years		1,044	[4]	1,036	[5]	1,238	[6]
Deferred compensation awards \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		341		299		373
Variable compensation including FA variable compensation deferred to the next and following years		756	[4]	429	[5]	585	[6]
Deferred compensation awards \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		727		588		565
Variable compensation including FA variable compensation deferred to the next and following years		288	[4]	608	[5]	653	[6]
of which: Equity Ownership Plan
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		463		422		526
Variable compensation including FA variable compensation deferred to the next and following years		376	[4]	424	[5]	570	[6]
of which: Equity Ownership Plan \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		137		122		217
Variable compensation including FA variable compensation deferred to the next and following years		306	[4]	205	[5]	325	[6]
of which: Equity Ownership Plan \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		327		300		309
Variable compensation including FA variable compensation deferred to the next and following years		69	[4]	219	[5]	244	[6]
of which: Deferred Contingent Capital Plan
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		463		375		357
Variable compensation including FA variable compensation deferred to the next and following years		476	[4]	538	[5]	620	[6]
of which: Deferred Contingent Capital Plan \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		112		113		131
Variable compensation including FA variable compensation deferred to the next and following years		280	[4]	173	[5]	238	[6]
of which: Deferred Contingent Capital Plan \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		351		262		226
Variable compensation including FA variable compensation deferred to the next and following years		196	[4]	365	[5]	382	[6]
of which: Long Term Incentive Plan
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		54		39
Variable compensation including FA variable compensation deferred to the next and following years		61	[4]	25	[5]
of which: Long Term Incentive Plan \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		42		39
Variable compensation including FA variable compensation deferred to the next and following years		50	[4]	25	[5]
of which: Long Term Incentive Plan \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		11		0
Variable compensation including FA variable compensation deferred to the next and following years		10	[4]	0	[5]
of which: Asset Management EOP
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		88		51		53
Variable compensation including FA variable compensation deferred to the next and following years		132	[4]	49	[5]	48	[6]
of which: Asset Management EOP \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		49		25		25
Variable compensation including FA variable compensation deferred to the next and following years		120	[4]	26	[5]	22	[6]
of which: Asset Management EOP \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		39		26		28
Variable compensation including FA variable compensation deferred to the next and following years		12	[4]	23	[5]	26	[6]
of which: Other performance awards
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year						2
Variable compensation including FA variable compensation deferred to the next and following years	[6]					1
of which: Other performance awards \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year						0
Variable compensation including FA variable compensation deferred to the next and following years	[6]					0
of which: Other performance awards \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year						2
Variable compensation including FA variable compensation deferred to the next and following years	[6]					1
Variable compensation - other
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year	[7]	220		246		243
Variable compensation including FA variable compensation deferred to the next and following years	[7]	374	[4]	349	[5]	450	[6]
Variable compensation - other \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year	[7]	126		159		162
Variable compensation including FA variable compensation deferred to the next and following years	[7]	181	[4]	117	[5]	180	[6]
Variable compensation - other \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year	[7]	94		88		80
Variable compensation including FA variable compensation deferred to the next and following years	[7]	192	[4]	232	[5]	269	[6]
Total variable compensation excluding financial advisor variable compensation
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		3,429		3,001		3,238
Variable compensation including FA variable compensation deferred to the next and following years		1,418	[4]	1,385	[5]	1,688	[6]
Total variable compensation excluding financial advisor variable compensation \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		2,634		2,352		2,624
Variable compensation including FA variable compensation deferred to the next and following years		938	[4]	545	[5]	766	[6]
Total variable compensation excluding financial advisor variable compensation \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		795		650		614
Variable compensation including FA variable compensation deferred to the next and following years		480	[4]	840	[5]	922	[6]
Total FA variable compensation
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		4,091		4,043		4,054
Variable compensation including FA variable compensation deferred to the next and following years		3,106	[4]	2,874	[5]	3,006	[6]
Total FA variable compensation \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		3,378		3,265		3,266
Variable compensation including FA variable compensation deferred to the next and following years		822	[4]	548	[5]	484	[6]
Total FA variable compensation \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		713		778		789
Variable compensation including FA variable compensation deferred to the next and following years		2,284	[4]	2,327	[5]	2,522	[6]
Financial advisor variable compensation
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		3,589		3,501		3,470
Variable compensation including FA variable compensation deferred to the next and following years		952	[4]	907	[5]	767	[6]
Financial advisor variable compensation \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		3,356		3,233		3,233
Variable compensation including FA variable compensation deferred to the next and following years		350	[4]	197	[5]	128	[6]
Financial advisor variable compensation \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		233		268		237
Variable compensation including FA variable compensation deferred to the next and following years		602	[4]	710	[5]	639	[6]
of which: non-deferred cash
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		3,154		3,064		3,089
Variable compensation including FA variable compensation deferred to the next and following years		0	[4]	0	[5]	0	[6]
of which: non-deferred cash \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		3,154		3,064		3,089
Variable compensation including FA variable compensation deferred to the next and following years		0	[4]	0	[5]	0	[6]
of which: non-deferred cash \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		0		0		0
Variable compensation including FA variable compensation deferred to the next and following years		0	[4]	0	[5]	0	[6]
of which: deferred share-based awards
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		119		106		95
Variable compensation including FA variable compensation deferred to the next and following years		214	[4]	183	[5]	183	[6]
of which: deferred share-based awards \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		69		57		51
Variable compensation including FA variable compensation deferred to the next and following years		79	[4]	54	[5]	52	[6]
of which: deferred share-based awards \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		50		48		44
Variable compensation including FA variable compensation deferred to the next and following years		135	[4]	130	[5]	131	[6]
of which: deferred cash-based awards
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		316		331		286
Variable compensation including FA variable compensation deferred to the next and following years		738	[4]	724	[5]	584	[6]
of which: deferred cash-based awards \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		133		112		93
Variable compensation including FA variable compensation deferred to the next and following years		271	[4]	144	[5]	76	[6]
of which: deferred cash-based awards \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		183		219		193
Variable compensation including FA variable compensation deferred to the next and following years		467	[4]	580	[5]	507	[6]
Compensation commitments with recruited financial advisors
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year	[8]	502		542		584
Variable compensation including FA variable compensation deferred to the next and following years	[8]	2,155	[4]	1,967	[5]	2,240	[6]
Compensation commitments with recruited financial advisors \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year	[8]	22		32		33
Variable compensation including FA variable compensation deferred to the next and following years	[8]	473	[4]	350	[5]	357	[6]
Compensation commitments with recruited financial advisors \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year	[8]	480		510		551
Variable compensation including FA variable compensation deferred to the next and following years	[8]	1,682	[4]	1,617	[5]	1,883	[6]
UBS AG
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		7,246	[9]	6,814	[10]	7,068	[11]
Variable compensation including FA variable compensation deferred to the next and following years		4,481	[4]	4,222	[5]	4,656	[6]
Variable compensation including FA variable compensation related to share-based compensation		666		595		612
Variable compensation including FA variable compensation related to share-based compensation - performance awards		498		448		507
Variable compensation including FA variable compensation related to share-based compensation - other variable compensation		49		42		10
Variable compensation including FA variable compensation related to share-based compensation - financial advisor variable compensation		119		106		95
Variable compensation including FA variable compensation related to share-based compensation recognized within other Note 6 expense categories		88		54		44
Salaries related to share-based compensation		4		10		15
Social security related to share-based compensation		51		23		7
Personnel expenses related to share-based compensation - Equity Plus Plan		34		22		22
UBS AG \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		5,765		5,398		5,666
Variable compensation including FA variable compensation deferred to the next and following years		1,732	[4]	1,076	[5]	1,233	[6]
UBS AG \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		1,481		1,416		1,402
Variable compensation including FA variable compensation deferred to the next and following years		2,749	[4]	3,146	[5]	3,424	[6]
UBS AG \| Variable compensation - performance awards
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		2,953		2,545		2,794
Variable compensation including FA variable compensation deferred to the next and following years		1,011	[4]	1,005	[5]	1,208	[6]
UBS AG \| Variable compensation - performance awards \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		2,278		1,993		2,256
Variable compensation including FA variable compensation deferred to the next and following years		734	[4]	413	[5]	570	[6]
UBS AG \| Variable compensation - performance awards \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		675		553		538
Variable compensation including FA variable compensation deferred to the next and following years		277	[4]	592	[5]	638	[6]
UBS AG \| Non-deferred cash
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		1,920		1,682		1,870
Variable compensation including FA variable compensation deferred to the next and following years		0	[4]	0	[5]	0	[6]
UBS AG \| Non-deferred cash \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		1,948		1,706		1,896
Variable compensation including FA variable compensation deferred to the next and following years		0	[4]	0	[5]	0	[6]
UBS AG \| Non-deferred cash \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		(29)		(24)		(26)
Variable compensation including FA variable compensation deferred to the next and following years		0	[4]	0	[5]	0	[6]
UBS AG \| Deferred compensation awards
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		1,034		863		924
Variable compensation including FA variable compensation deferred to the next and following years		1,011	[4]	1,005	[5]	1,208	[6]
UBS AG \| Deferred compensation awards \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		329		287		360
Variable compensation including FA variable compensation deferred to the next and following years		734	[4]	413	[5]	570	[6]
UBS AG \| Deferred compensation awards \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		704		576		564
Variable compensation including FA variable compensation deferred to the next and following years		277	[4]	592	[5]	638	[6]
UBS AG \| of which: Equity Ownership Plan
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		446		410		507
Variable compensation including FA variable compensation deferred to the next and following years		365	[4]	412	[5]	554	[6]
UBS AG \| of which: Equity Ownership Plan \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		131		115		208
Variable compensation including FA variable compensation deferred to the next and following years		298	[4]	198	[5]	316	[6]
UBS AG \| of which: Equity Ownership Plan \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		315		294		299
Variable compensation including FA variable compensation deferred to the next and following years		67	[4]	213	[5]	238	[6]
UBS AG \| of which: Deferred Contingent Capital Plan
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		448		365		361
Variable compensation including FA variable compensation deferred to the next and following years		459	[4]	521	[5]	605	[6]
UBS AG \| of which: Deferred Contingent Capital Plan \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		108		109		126
Variable compensation including FA variable compensation deferred to the next and following years		271	[4]	166	[5]	232	[6]
UBS AG \| of which: Deferred Contingent Capital Plan \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		339		256		235
Variable compensation including FA variable compensation deferred to the next and following years		189	[4]	356	[5]	373	[6]
UBS AG \| of which: Long Term Incentive Plan
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		52		38
Variable compensation including FA variable compensation deferred to the next and following years		55	[4]	23
UBS AG \| of which: Long Term Incentive Plan \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		41		38
Variable compensation including FA variable compensation deferred to the next and following years		46	[4]	23
UBS AG \| of which: Long Term Incentive Plan \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		11		0
Variable compensation including FA variable compensation deferred to the next and following years		9	[4]	0
UBS AG \| of which: Asset Management EOP
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		88		51		53
Variable compensation including FA variable compensation deferred to the next and following years		132	[4]	49	[5]	48	[6]
UBS AG \| of which: Asset Management EOP \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		49		25		25
Variable compensation including FA variable compensation deferred to the next and following years		120	[4]	26	[5]	22	[6]
UBS AG \| of which: Asset Management EOP \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		39		26		28
Variable compensation including FA variable compensation deferred to the next and following years		12	[4]	23	[5]	26	[6]
UBS AG \| of which: Other performance awards
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year						2
Variable compensation including FA variable compensation deferred to the next and following years	[6]					1
UBS AG \| of which: Other performance awards \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year						0
Variable compensation including FA variable compensation deferred to the next and following years	[6]					0
UBS AG \| of which: Other performance awards \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year						2
Variable compensation including FA variable compensation deferred to the next and following years	[6]					1
UBS AG \| Variable compensation - other
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year	[7]	201		225		220
Variable compensation including FA variable compensation deferred to the next and following years	[7]	364	[4]	343	[5]	442	[6]
UBS AG \| Variable compensation - other \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year	[7]	109		140		144
Variable compensation including FA variable compensation deferred to the next and following years	[7]	176	[4]	115	[5]	178	[6]
UBS AG \| Variable compensation - other \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year	[7]	92		85		75
Variable compensation including FA variable compensation deferred to the next and following years	[7]	189	[4]	228	[5]	264	[6]
UBS AG \| Total variable compensation excluding financial advisor variable compensation
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		3,155		2,770		3,013
Variable compensation including FA variable compensation deferred to the next and following years		1,375	[4]	1,348	[5]	1,650	[6]
UBS AG \| Total variable compensation excluding financial advisor variable compensation \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		2,387		2,133		2,400
Variable compensation including FA variable compensation deferred to the next and following years		909	[4]	528	[5]	748	[6]
UBS AG \| Total variable compensation excluding financial advisor variable compensation \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		768		638		613
Variable compensation including FA variable compensation deferred to the next and following years		465	[4]	820	[5]	902	[6]
UBS AG \| Total FA variable compensation
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		4,091		4,043		4,054
Variable compensation including FA variable compensation deferred to the next and following years		3,106	[4]	2,874	[5]	3,006	[6]
UBS AG \| Total FA variable compensation \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		3,378		3,265		3,266
Variable compensation including FA variable compensation deferred to the next and following years		822	[4]	548	[5]	484	[6]
UBS AG \| Total FA variable compensation \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		713		778		789
Variable compensation including FA variable compensation deferred to the next and following years		2,284	[4]	2,327	[5]	2,522	[6]
UBS AG \| Financial advisor variable compensation
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		3,589		3,501		3,470
Variable compensation including FA variable compensation deferred to the next and following years		952	[4]	907	[5]	767	[6]
UBS AG \| Financial advisor variable compensation \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		3,356		3,233		3,233
Variable compensation including FA variable compensation deferred to the next and following years		350	[4]	197	[5]	128	[6]
UBS AG \| Financial advisor variable compensation \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		233		268		237
Variable compensation including FA variable compensation deferred to the next and following years		602	[4]	710	[5]	639	[6]
UBS AG \| of which: non-deferred cash
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		3,154		3,064		3,089
Variable compensation including FA variable compensation deferred to the next and following years		0	[4]	0	[5]	0	[6]
UBS AG \| of which: non-deferred cash \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		3,154		3,064		3,089
Variable compensation including FA variable compensation deferred to the next and following years		0	[4]	0	[5]	0	[6]
UBS AG \| of which: non-deferred cash \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		0		0		0
Variable compensation including FA variable compensation deferred to the next and following years		0	[4]	0	[5]	0	[6]
UBS AG \| of which: deferred share-based awards
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		119		106		95
Variable compensation including FA variable compensation deferred to the next and following years		214	[4]	183	[5]	183	[6]
UBS AG \| of which: deferred share-based awards \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		69		57		51
Variable compensation including FA variable compensation deferred to the next and following years		79	[4]	54	[5]	52	[6]
UBS AG \| of which: deferred share-based awards \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		50		48		44
Variable compensation including FA variable compensation deferred to the next and following years		135	[4]	130	[5]	131	[6]
UBS AG \| of which: deferred cash-based awards
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		316		331		286
Variable compensation including FA variable compensation deferred to the next and following years		738	[4]	724	[5]	584	[6]
UBS AG \| of which: deferred cash-based awards \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		133		112		93
Variable compensation including FA variable compensation deferred to the next and following years		271	[4]	144	[5]	76	[6]
UBS AG \| of which: deferred cash-based awards \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year		183		219		193
Variable compensation including FA variable compensation deferred to the next and following years		467	[4]	580	[5]	507	[6]
UBS AG \| Compensation commitments with recruited financial advisors
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year	[8]	502		542		584
Variable compensation including FA variable compensation deferred to the next and following years	[8]	2,155	[4]	1,967	[5]	2,240	[6]
UBS AG \| Compensation commitments with recruited financial advisors \| Related to performance year
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year	[8]	22		32		33
Variable compensation including FA variable compensation deferred to the next and following years	[8]	473	[4]	350	[5]	357	[6]
UBS AG \| Compensation commitments with recruited financial advisors \| Related to prior performance years
Income Statement Compensation Items [Line Items]
Variable compensation including FA variable compensation for the current year	[8]	480		510		551
Variable compensation including FA variable compensation deferred to the next and following years	[8]	$ 1,682	[4]	$ 1,617	[5]	$ 1,883	[6]

[1]	Includes USD 686 million in expenses related to share-based compensation (performance awards: USD 517 million; other variable compensation: USD 50 million; financial advisor compensation: USD 119 million). A further USD 100 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 4 million related to role-based allowances; social security: USD 54 million; other personnel expenses: USD 42 million related to the Equity Plus Plan). Total personnel expense related to share-based equity-settled compensation excluding social security was USD 691 million.
[2]	Includes USD 610 million in expenses related to share-based compensation (performance awards: USD 461 million; other variable compensation: USD 43 million; financial advisor compensation: USD 106 million). A further USD 61 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 10 million related to role-based allowances; social security: USD 25 million; other personnel expenses: USD 27 million related to the Equity Plus Plan). Total personnel expense related to share-based equity-settled compensation excluding social security was USD 619 million.
[3]	Includes USD 634 million in expenses related to share-based compensation (performance awards: USD 526 million; other variable compensation: USD 12 million; financial advisor compensation: USD 95 million). A further USD 49 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 15 million related to role-based allowances; social security: USD 8 million; other personnel expenses: USD 26 million related to the Equity Plus Plan). Total personnel expense related to share-based equity-settled compensation excluding social security was USD 676 million.
[4]	Estimate as of 31 December 2020. Actual amounts to be expensed in future periods may vary, e.g., due to forfeiture of awards
[5]	Estimate as of 31 December 2019. Actual amounts expensed may vary, e.g., due to forfeiture of awards
[6]	Estimate as of 31 December 2018. Actual amounts expensed may vary, e.g., due to forfeiture of awards
[7]	Comprised of replacement payments, forfeiture credits, severance payments, retention plan payments and interest expense related to the Deferred Contingent Capital Plan.
[8]	Reflects expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements. Amounts reflected as deferred expenses represent the maximum deferred exposure as of the balance sheet date.
[9]	Includes USD 666 million in expenses related to share-based compensation (performance awards: USD 498 million; other variable compensation: USD 49 million; financial advisor compensation: USD 119 million). A further USD 88 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 4 million related to role-based allowances; social security: USD 51 million; other personnel expenses: USD 34 million related to the Equity Plus Plan).
[10]	Includes USD 595 million in expenses related to share-based compensation (performance awards: USD 448 million; other variable compensation: USD 42 million; financial advisor compensation: USD 106 million). A further USD 54 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 10 million related to role-based allowances; social security: USD 23 million; other personnel expenses: USD 22 million related to the Equity Plus Plan).
[11]	Includes USD 612 million in expenses related to share-based compensation (performance awards: USD 507 million; other variable compensation: USD 10 million; financial advisor compensation: USD 95 million). A further USD 44 million in expenses related to share-based compensation was recognized within other expense categories included in Note 6 (salaries: USD 15 million related to role-based allowances; social security: USD 7 million; other personnel expenses: USD 22 million related to the Equity Plus Plan).

Employee benefits_ variable c_6

Employee benefits: variable compensation - Movements (Detail)	12 Months Ended
	Dec. 31, 2020USD ($)shares	Dec. 31, 2019USD ($)shares
Share Awards [Line Items]
Number of shares outstanding, at the beginning of the year	156,064,763	146,845,027
Number of shares awarded during the year	72,250,157	77,641,909
Number of share distributions during the year	(46,899,362)	(61,152,200)
Number of shares forfeited during the year	(6,515,164)	(7,269,974)
Number of shares outstanding, at the end of the year	174,900,395	156,064,763
Number of shares vested for accounting purposes	118,260,527	79,486,447
Weighted average grant date fair value of shares outstanding, at the beginning of the year \| $	$ 14	$ 16
Weighted average grant date fair value of shares awarded during the year \| $	11	11
Weighted average grant date fair value of share distributions during the year \| $	15	13
Weighted average grant date fair value of shares forfeited during the year \| $	13	14
Weighted average grant date fair value of shares outstanding, at the end of the year \| $	$ 12	$ 14
UBS AG
Share Awards [Line Items]
Number of shares outstanding, at the beginning of the year	90,443	201,793
Number of shares awarded during the year	19,229	29,092
Number of share distributions during the year	(55,114)	(140,441)
Number of shares forfeited during the year	0	0
Number of shares outstanding, at the end of the year	54,557	90,443
Number of shares vested for accounting purposes	53,216	56,492
Weighted average grant date fair value of shares outstanding, at the beginning of the year \| $	$ 14	$ 15
Weighted average grant date fair value of shares awarded during the year \| $	11	11
Weighted average grant date fair value of share distributions during the year \| $	14	14
Weighted average grant date fair value of shares forfeited during the year \| $	0	0
Weighted average grant date fair value of shares outstanding, at the end of the year \| $	$ 13	$ 14

Interests in subsidiaries (Deta

Interests in subsidiaries (Detail 1.1) SFr in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2020CHF (SFr)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Disclosure Of Significant Investments In Subsidiaries [Line Items]
Share capital \| $			$ 338	$ 338
UBS AG Subsidiaries
Disclosure Of Significant Investments In Subsidiaries [Line Items]
Company		UBS AG
Registered office		Zurich and Basel, Switzerland
Share capital \| SFr		SFr 385.8
Equity interest accumulated in %		100.00%
UBS Business Solutions AG
Disclosure Of Significant Investments In Subsidiaries [Line Items]
Company	[1]	UBS Business Solutions AG
Registered office	[1]	Zurich, Switzerland
Share capital \| SFr	[1]	SFr 1
Equity interest accumulated in %	[1]	100.00%
UBS AG
Disclosure Of Significant Investments In Subsidiaries [Line Items]
Share capital \| $			$ 338	$ 338

[1]	UBS Business Solutions AG holds subsidiaries in Poland, China and India.

Interests in subsidiaries (De_2

Interests in subsidiaries (Detail 1.2) € in Millions, SFr in Millions		12 Months Ended
		Dec. 31, 2020CHF (SFr)	Dec. 31, 2020EUR (€)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Individually significant subsidiaries of UBS AG
Share capital				$ 338,000,000	$ 338,000,000
UBS Americas Holding LLC
Individually significant subsidiaries of UBS AG
Company	[1]	UBS Americas Holding LLC
Registered office	[1]	Wilmington, Delaware, USA
Primary business division	[1]	Group Functions
Share capital	[1],[2]			3,150,000,000
Equity interest accumulated in %	[1]	100.00%
Common share capital	[1]			1,000
Preference share capital	[1]			3,150,000,000
UBS Americas Inc.
Individually significant subsidiaries of UBS AG
Company	[1]	UBS Americas Inc.
Registered office	[1]	Wilmington, Delaware, USA
Primary business division	[1]	Group Functions
Share capital	[1]			0
Equity interest accumulated in %	[1]	100.00%
UBS Asset Management AG
Individually significant subsidiaries of UBS AG
Company	[1]	UBS Asset Management AG
Registered office	[1]	Zurich, Switzerland
Primary business division	[1]	Asset Management
Share capital \| SFr	[1]	SFr 43.2
Equity interest accumulated in %	[1]	100.00%
UBS Bank USA
Individually significant subsidiaries of UBS AG
Company	[1]	UBS Bank USA
Registered office	[1]	Salt Lake City, Utah, USA
Primary business division	[1]	Global Wealth Management
Share capital	[1]			0
Equity interest accumulated in %	[1]	100.00%
UBS Europe SE
Individually significant subsidiaries of UBS AG
Company	[1]	UBS Europe SE
Registered office	[1]	Frankfurt, Germany
Primary business division	[1]	Global Wealth Management
Share capital \| €	[1]		€ 446
Equity interest accumulated in %	[1]	100.00%
UBS Financial Services Inc.
Individually significant subsidiaries of UBS AG
Company	[1]	UBS Financial Services Inc.
Registered office	[1]	Wilmington, Delaware, USA
Primary business division	[1]	Global Wealth Management
Share capital	[1]			0
Equity interest accumulated in %	[1]	100.00%
UBS Securities LLC
Individually significant subsidiaries of UBS AG
Company	[1]	UBS Securities LLC
Registered office	[1]	Wilmington, Delaware, USA
Primary business division	[1]	Investment Bank
Share capital	[1],[3]			1,283,100,000
Equity interest accumulated in %	[1]	100.00%
Common share capital	[1]			100,000
Preference share capital	[1]			1,283,000,000
UBS Switzerland AG
Individually significant subsidiaries of UBS AG
Company	[1]	UBS Switzerland AG
Registered office	[1]	Zurich, Switzerland
Primary business division	[1]	Personal & Corporate Banking
Share capital \| SFr	[1]	SFr 10
Equity interest accumulated in %	[1]	100.00%
UBS AG
Individually significant subsidiaries of UBS AG
Share capital				338,000,000	$ 338,000,000
UBS AG \| UBS Americas Holding LLC
Individually significant subsidiaries of UBS AG
Company	[1]	UBS Americas Holding LLC
Registered office	[1]	Wilmington, Delaware, USA
Primary business division	[1]	Group Functions
Share capital	[1],[2]			3,150,000,000
Equity interest accumulated in %	[1]	100.00%
Common share capital	[1]			1,000
Preference share capital	[1]			3,150,000,000
UBS AG \| UBS Americas Inc.
Individually significant subsidiaries of UBS AG
Company	[1]	UBS Americas Inc.
Registered office	[1]	Wilmington, Delaware, USA
Primary business division	[1]	Group Functions
Share capital	[1]			0
Equity interest accumulated in %	[1]	100.00%
UBS AG \| UBS Asset Management AG
Individually significant subsidiaries of UBS AG
Company	[1]	UBS Asset Management AG
Registered office	[1]	Zurich, Switzerland
Primary business division	[1]	Asset Management
Share capital \| SFr	[1]	SFr 43.2
Equity interest accumulated in %	[1]	100.00%
UBS AG \| UBS Bank USA
Individually significant subsidiaries of UBS AG
Company	[1]	UBS Bank USA
Registered office	[1]	Salt Lake City, Utah, USA
Primary business division	[1]	Global Wealth Management
Share capital	[1]			0
Equity interest accumulated in %	[1]	100.00%
UBS AG \| UBS Europe SE
Individually significant subsidiaries of UBS AG
Company	[1]	UBS Europe SE
Registered office	[1]	Frankfurt, Germany
Primary business division	[1]	Global Wealth Management
Share capital \| €	[1]		€ 446
Equity interest accumulated in %	[1]	100.00%
UBS AG \| UBS Financial Services Inc.
Individually significant subsidiaries of UBS AG
Company	[1]	UBS Financial Services Inc.
Registered office	[1]	Wilmington, Delaware, USA
Primary business division	[1]	Global Wealth Management
Share capital	[1]			0
Equity interest accumulated in %	[1]	100.00%
UBS AG \| UBS Securities LLC
Individually significant subsidiaries of UBS AG
Company	[1]	UBS Securities LLC
Registered office	[1]	Wilmington, Delaware, USA
Primary business division	[1]	Investment Bank
Share capital	[1],[3]			1,283,100,000
Equity interest accumulated in %	[1]	100.00%
Common share capital	[1]			100,000
Preference share capital	[1]			$ 1,283,000,000
UBS AG \| UBS Switzerland AG
Individually significant subsidiaries of UBS AG
Company	[1]	UBS Switzerland AG
Registered office	[1]	Zurich, Switzerland
Primary business division	[1]	Personal & Corporate Banking
Share capital \| SFr	[1]	SFr 10
Equity interest accumulated in %	[1]	100.00%

[1]	Includes direct and indirect subsidiaries of UBS AG
[2]	Consists of common share capital of USD 1,000 and non-voting preferred share capital of USD 3,150,000,000.
[3]	Consists of common share capital of USD 100,000 and non-voting preferred share capital of USD 1,283,000,000.

Interests in subsidiaries (De_3

Interests in subsidiaries (Detail 2) € in Millions, ¥ in Millions, £ in Millions, SFr in Millions, $ in Millions, $ in Millions, $ in Millions, in Millions		12 Months Ended
		Dec. 31, 2020AUD ($)	Dec. 31, 2020CHF (SFr)	Dec. 31, 2020EUR (€)	Dec. 31, 2020GBP (£)	Dec. 31, 2020HKD ($)	Dec. 31, 2020JPY (¥)	Dec. 31, 2020SDG ( )	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Share capital									$ 338	$ 338
UBS Asset Management (Americas) Inc.
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Asset Management (Americas) Inc.
Registered office		Wilmington, Delaware, USA
Primary business division		Asset Management
Share capital									0
Equity interest accumulated in %		100.00%
UBS Asset Management (Hong Kong) Limited
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Asset Management (Hong Kong) Limited
Registered office		Hong Kong, Hong Kong
Primary business division		Asset Management
Share capital						$ 254
Equity interest accumulated in %		100.00%
UBS Asset Management Life Ltd
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Asset Management Life Ltd
Registered office		London, United Kingdom
Primary business division		Asset Management
Share capital \| £					£ 15
Equity interest accumulated in %		100.00%
UBS Asset Management Switzerland AG
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Asset Management Switzerland AG
Registered office		Zurich, Switzerland
Primary business division		Asset Management
Share capital \| SFr			SFr 0.5
Equity interest accumulated in %		100.00%
UBS Asset Management (UK) Ltd
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Asset Management (UK) Ltd
Registered office		London, United Kingdom
Primary business division		Asset Management
Share capital \| £					125
Equity interest accumulated in %		100.00%
UBS Business Solutions US LLC
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Business Solutions US LLC
Registered office		Wilmington, Delaware, USA
Primary business division		Group Functions
Share capital									0
Equity interest accumulated in %		100.00%
UBS Credit Corp.
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Credit Corp.
Registered office		Wilmington, Delaware, USA
Primary business division		Global Wealth Management
Share capital									0
Equity interest accumulated in %		100.00%
UBS (France) SA.
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS (France) S.A.
Registered office		Paris, France
Primary business division		Global Wealth Management
Share capital \| €				€ 133
Equity interest accumulated in %		100.00%
UBS Fund Management (Luxembourg) S.A.
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Fund Management (Luxembourg) S.A.
Registered office		Luxembourg, Luxembourg
Primary business division		Asset Management
Share capital \| €				13
Equity interest accumulated in %		100.00%
UBS Fund Management (Switzerland) AG
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Fund Management (Switzerland) AG
Registered office		Basel, Switzerland
Primary business division		Asset Management
Share capital \| SFr			1
Equity interest accumulated in %		100.00%
UBS (Monaco) S.A.
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS (Monaco) S.A.
Registered office		Monte Carlo, Monaco
Primary business division		Global Wealth Management
Share capital \| €				49.2
Equity interest accumulated in %		100.00%
UBS Realty Investors LLC
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Realty Investors LLC
Registered office		Boston, Massachusetts, USA
Primary business division		Asset Management
Share capital									9
Equity interest accumulated in %		100.00%
UBS Securities Australia Ltd
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Securities Australia Ltd
Registered office		Sydney, Australia
Primary business division		Investment Bank
Share capital	[1]	$ 0.3
Equity interest accumulated in %		100.00%
UBS Securities Hong Kong Limited
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Securities Hong Kong Limited
Registered office		Hong Kong, Hong Kong
Primary business division		Investment Bank
Share capital						3,154.2
Equity interest accumulated in %		100.00%
UBS Securities Japan Co., Ltd.
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Securities Japan Co., Ltd.
Registered office		Tokyo, Japan
Primary business division		Investment Bank
Share capital \| ¥							¥ 32,100
Equity interest accumulated in %		100.00%
UBS Securities Pte. Ltd.
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Securities Pte. Ltd.
Registered office		Singapore, Singapore
Primary business division		Investment Bank
Share capital \|								420.4
Equity interest accumulated in %		100.00%
UBS AG
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Share capital									338	$ 338
UBS AG \| UBS Asset Management (Americas) Inc.
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Asset Management (Americas) Inc.
Registered office		Wilmington, Delaware, USA
Primary business division		Asset Management
Share capital									0
Equity interest accumulated in %		100.00%
UBS AG \| UBS Asset Management (Hong Kong) Limited
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Asset Management (Hong Kong) Limited
Registered office		Hong Kong, Hong Kong
Primary business division		Asset Management
Share capital						254
Equity interest accumulated in %		100.00%
UBS AG \| UBS Asset Management Life Ltd
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Asset Management Life Ltd
Registered office		London, United Kingdom
Primary business division		Asset Management
Share capital \| £					15
Equity interest accumulated in %		100.00%
UBS AG \| UBS Asset Management Switzerland AG
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Asset Management Switzerland AG
Registered office		Zurich, Switzerland
Primary business division		Asset Management
Share capital \| SFr			0.5
Equity interest accumulated in %		100.00%
UBS AG \| UBS Asset Management (UK) Ltd
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Asset Management (UK) Ltd
Registered office		London, United Kingdom
Primary business division		Asset Management
Share capital \| £					£ 125
Equity interest accumulated in %		100.00%
UBS AG \| UBS Business Solutions US LLC
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Business Solutions US LLC
Registered office		Wilmington, Delaware, USA
Primary business division		Group Functions
Share capital									0
Equity interest accumulated in %		100.00%
UBS AG \| UBS Credit Corp.
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Credit Corp.
Registered office		Wilmington, Delaware, USA
Primary business division		Global Wealth Management
Share capital									0
Equity interest accumulated in %		100.00%
UBS AG \| UBS (France) SA.
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS (France) S.A.
Registered office		Paris, France
Primary business division		Global Wealth Management
Share capital \| €				133
Equity interest accumulated in %		100.00%
UBS AG \| UBS Fund Management (Luxembourg) S.A.
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Fund Management (Luxembourg) S.A.
Registered office		Luxembourg, Luxembourg
Primary business division		Asset Management
Share capital \| €				13
Equity interest accumulated in %		100.00%
UBS AG \| UBS Fund Management (Switzerland) AG
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Fund Management (Switzerland) AG
Registered office		Basel, Switzerland
Primary business division		Asset Management
Share capital \| SFr			SFr 1
Equity interest accumulated in %		100.00%
UBS AG \| UBS (Monaco) S.A.
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS (Monaco) S.A.
Registered office		Monte Carlo, Monaco
Primary business division		Global Wealth Management
Share capital \| €				€ 49.2
Equity interest accumulated in %		100.00%
UBS AG \| UBS Realty Investors LLC
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Realty Investors LLC
Registered office		Boston, Massachusetts, USA
Primary business division		Asset Management
Share capital									$ 9
Equity interest accumulated in %		100.00%
UBS AG \| UBS Securities Australia Ltd
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Securities Australia Ltd
Registered office		Sydney, Australia
Primary business division		Investment Bank
Share capital	[1]	$ 0.3
Equity interest accumulated in %		100.00%
UBS AG \| UBS Securities Hong Kong Limited
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Securities Hong Kong Limited
Registered office		Hong Kong, Hong Kong
Primary business division		Investment Bank
Share capital						$ 3,154.2
Equity interest accumulated in %		100.00%
UBS AG \| UBS Securities Japan Co., Ltd.
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Securities Japan Co., Ltd.
Registered office		Tokyo, Japan
Primary business division		Investment Bank
Share capital \| ¥							¥ 32,100
Equity interest accumulated in %		100.00%
UBS AG \| UBS Securities Pte. Ltd.
Disclosure Of Investments In Subsidiaries With Material Group Contribution [Line Items]
Company		UBS Securities Pte. Ltd.
Registered office		Singapore, Singapore
Primary business division		Investment Bank
Share capital \|								420.4
Equity interest accumulated in %		100.00%

[1]	Includes a nominal amount relating to redeemable preference shares.

Interests in subsidiaries (Narr

Interests in subsidiaries (Narrative) (Detail) - USD ($)	12 Months Ended
Interests in subsidiaries (Narrative) (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Notes Interests In Subsidiaries [Line Items]
Description of terms of contractual arrangements that could require parent or subsidiaries to provide financial support to consolidated structured entity	In 2020 and 2019, the Group did not enter into any contractual obligation that could require the Group to provide financial support to consolidated SEs.	In 2020 and 2019, the Group did not enter into any contractual obligation that could require the Group to provide financial support to consolidated SEs.
Support provided to consolidated structured entity without having contractual obligation to do so	$ 0	$ 0
Description of intentions to provide support to consolidated structured entity	In 2020 and 2019, the Group did not provide support, financial or otherwise, to an unconsolidated SE when not contractually obligated to do so, nor does the Group have any intention to do so in the future.	In 2020 and 2019, the Group did not provide support, financial or otherwise, to an unconsolidated SE when not contractually obligated to do so, nor does the Group have any intention to do so in the future.
UBS AG
Notes Interests In Subsidiaries [Line Items]
Support provided to consolidated structured entity without having contractual obligation to do so	$ 0	$ 0
Description of intentions to provide support to consolidated structured entity	In 2020 and 2019, UBS AG did not enter into any contractual obligation that could require UBS AG to provide financial support to consolidated SEs. In addition, UBS AG did not provide support, financial or otherwise, to a consolidated SE when UBS AG was not contractually obligated to do so, nor does UBS AG have any intention to do so in the future. Furthermore, UBS AG did not provide support, financial or otherwise, to a previously unconsolidated SE that resulted in UBS AG controlling the SE during the reporting period.	In 2020 and 2019, UBS AG did not enter into any contractual obligation that could require UBS AG to provide financial support to consolidated SEs. In addition, UBS AG did not provide support, financial or otherwise, to a consolidated SE when UBS AG was not contractually obligated to do so, nor does UBS AG have any intention to do so in the future. Furthermore, UBS AG did not provide support, financial or otherwise, to a previously unconsolidated SE that resulted in UBS AG controlling the SE during the reporting period.

Interests in associates and j_3

Interests in associates and joint ventures (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Disclosure Of Investments In Associates And Joint Ventures [Line Items]
Carrying amount at the beginning of the year		$ 1,051		$ 1,099
Additions	[1]	388		0
Disposals		0		0
Share of comprehensive income		83		25
of which: share of net profit		84	[2],[3]	46	[2]	$ 529	[4]
of which: share of other comprehensive income	[5]	(1)		(21)
Share of changes in retained earnings		(40)		0
Dividends received		(33)		(83)
Impairment		0		(1)
Foreign currency translation		108		11
Carrying amount at the end of the year		1,557		1,051		1,099
of which: associates		1,513		1,010
of which: joint ventures		44		41
Share of profit (loss) of associates		64		28
Share of profit (loss) of joint ventures		19		18
Share of other comprehensive income of associates		(1)		(22)
Share of other comprehensive income of joint ventures				1
SIX Group AG, Zurich
Disclosure Of Investments In Associates And Joint Ventures [Line Items]
of which: associates	[6]	$ 965		887
UBS's equity interest		17.31%
Share of profit (loss) of associates related to valuation gains		$ 26				460
Clearstream Fund Centre AG
Disclosure Of Investments In Associates And Joint Ventures [Line Items]
of which: associates	[1]	$ 399
Decrease in proportion of ownership in subsidiaries that result in loss of control		51.20%
UBS's equity interest		48.80%
Gains (losses) on the sale of subsidiaries		$ 631
Other associates
Disclosure Of Investments In Associates And Joint Ventures [Line Items]
of which: associates		150		123
UBS AG
Disclosure Of Investments In Associates And Joint Ventures [Line Items]
Carrying amount at the beginning of the year		1,051		1,099
Additions	[7]	388		0
Disposals		0		0
Share of comprehensive income		83		25
of which: share of net profit		84	[3],[8]	46	[8]	529	[4]
of which: share of other comprehensive income	[9]	(1)		(21)
Share of changes in retained earnings		(40)		0
Dividends received		(33)		(83)
Impairment		0		(1)
Foreign currency translation		108		11
Carrying amount at the end of the year		1,557		1,051		1,099
of which: associates		1,513		1,010
of which: joint ventures		44		41
Share of profit (loss) of associates		64		28
Share of profit (loss) of joint ventures		19		18
Share of other comprehensive income of associates		(1)		(22)
Share of other comprehensive income of joint ventures				1
UBS AG \| SIX Group AG, Zurich
Disclosure Of Investments In Associates And Joint Ventures [Line Items]
of which: associates	[10]	$ 965		887
UBS's equity interest		17.31%
Share of profit (loss) of associates related to valuation gains		$ 26				$ 460
UBS AG \| Clearstream Fund Centre AG
Disclosure Of Investments In Associates And Joint Ventures [Line Items]
of which: associates	[7]	$ 399
Decrease in proportion of ownership in subsidiaries that result in loss of control		51.20%
UBS's equity interest		48.80%
Gains (losses) on the sale of subsidiaries		$ 631
UBS AG \| Other associates
Disclosure Of Investments In Associates And Joint Ventures [Line Items]
of which: associates		$ 150		$ 123

[1]	On 30 September 2020, UBS completed the sale of a 51.2% stake in Fondcenter AG to Clearstream and deconsolidated the entity in accordance with IFRS 10, Consolidated Financial Statements. The retained minority shareholding of 48.8% is accounted for as an associate and increased the investments in associates by USD 385 million upon completion of the transaction. Refer to Note 29 for more information
[2]	For 2020, consists of USD 64 million from associates and USD 19 million from joint ventures. For 2019, consists of USD 28 million from associates and USD 18 million from joint ventures.
[3]	Includes a valuation gain of USD 26 million on UBS’s equity ownership of SIX Group.
[4]	Includes a valuation gain of USD 460 million on UBS’s equity ownership of SIX Group related to the sale of SIX Payment Services to Worldline.
[5]	For 2020, consists of negative USD 1 million from associates. For 2019, consists of negative USD 22 million from associates and USD 1 million from joint ventures.
[6]	In 2020, UBS AG’s equity interest amounts to 17.31%. UBS AG is represented on the Board of Directors.
[7]	On 30 September 2020, UBS AG completed the sale of a 51.2% stake in Fondcenter AG to Clearstream and deconsolidated the entity in accordance with IFRS 10, Consolidated Financial Statements. The retained minority shareholding of 48.8% is accounted for as an associate and increased the investments in associates by USD 385 million upon completion of the transaction. Refer to Note 29 for more information
[8]	For 2020, consists of USD 64 million from associates and USD 19 million from joint ventures. For 2019, consists of USD 28 million from associates and USD 18 million from joint ventures.
[9]	For 2020, consists of negative USD 1 million from associates. For 2019, consists of negative USD 22 million from associates and USD 1 million from joint ventures.
[10]	In 2020, UBS AG’s equity interest amounts to 17.31%. UBS AG is represented on the Board of Directors.

Interests in associates and j_4

Interests in associates and joint ventures (Narrative) (Detail)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Investments In Associates And Joint Ventures [Line Items]
Description of nature and extent of significant restrictions on transfer of funds to entity, associates and joint ventures	there were no significant restrictions on the ability of associates or joint ventures to transfer funds to UBS Group AG or its subsidiaries in the form of cash dividends or to repay loans or advances made.	there were no significant restrictions on the ability of associates or joint ventures to transfer funds to UBS Group AG or its subsidiaries in the form of cash dividends or to repay loans or advances made
UBS AG
Disclosure Of Investments In Associates And Joint Ventures [Line Items]
Description of nature and extent of significant restrictions on transfer of funds to entity, associates and joint ventures	there were no significant restrictions on the ability of associates or joint ventures to transfer funds to UBS AG or its subsidiaries in the form of cash dividends or to repay loans or advances made	there were no significant restrictions on the ability of associates or joint ventures to transfer funds to UBS AG or its subsidiaries in the form of cash dividends or to repay loans or advances made

Interests in unconsolidated s_3

Interests in unconsolidated structured entities (Narrative) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Unconsolidated Structured Entities [Line Items]
Support provided to consolidated structured entity without having contractual obligation to do so	$ 0	$ 0
Information About How Maximum Exposure To Loss From Interests In Structured Entities Is Determined	The Group’s maximum exposure to loss is generally equal to the carrying amount of the Group’s interest in the SE, with the exception of guarantees, letters of credit and credit derivatives, for which the contract’s notional amount, adjusted for losses already incurred, represents the maximum loss that the Group is exposed to. In addition, the current fair value of derivative swap instruments with a positive replacement value only, such as total return swaps, is presented as the maximum exposure to loss. Risk exposure for these swap instruments could change over time with market movements.	The Group’s maximum exposure to loss is generally equal to the carrying amount of the Group’s interest in the SE, with the exception of guarantees, letters of credit and credit derivatives, for which the contract’s notional amount, adjusted for losses already incurred, represents the maximum loss that the Group is exposed to. In addition, the current fair value of derivative swap instruments with a positive replacement value only, such as total return swaps, is presented as the maximum exposure to loss. Risk exposure for these swap instruments could change over time with market movements.
Description of intentions to provide support to consolidated structured entity	In 2020 and 2019, the Group did not provide support, financial or otherwise, to an unconsolidated SE when not contractually obligated to do so, nor does the Group have any intention to do so in the future.	In 2020 and 2019, the Group did not provide support, financial or otherwise, to an unconsolidated SE when not contractually obligated to do so, nor does the Group have any intention to do so in the future.
Description of types of income from structured entities	In 2020 and 2019, income and expenses from interests in unconsolidated SEs primarily resulted from mark-to-market movements recognized in Other net income from financial instruments measured at fair value through profit of loss, which have generally been hedged with other financial instruments, as well as fee and commission income received from UBS-sponsored funds.	In 2020 and 2019, income and expenses from interests in unconsolidated SEs primarily resulted from mark-to-market movements recognized in Other net income from financial instruments measured at fair value through profit of loss, which have generally been hedged with other financial instruments, as well as fee and commission income received from UBS-sponsored funds.
Non Existence Of Interest [Member]
Disclosure Of Unconsolidated Structured Entities [Line Items]
Description of types of income from structured entities	For several sponsored SEs, no interest was held by the Group at year-end. However, during the respective reporting period the Group transferred assets, provided services and held instruments that did not qualify as an interest in these sponsored SEs, and accordingly earned income or incurred expenses from these entities. The table below presents the income earned and expenses incurred directly from these entities during the year, as well as corresponding asset information. The table does not include income earned and expenses incurred from risk management activities, including income and expenses from financial instruments used to economically hedge instruments transacted with the unconsolidated SEs. The majority of the fee income arose from investment funds that are sponsored and administrated by the Group, but managed by third parties. As the Group does not provide any investment management services, UBS was not exposed to risk from the performance of these entities and was therefore deemed not to have an interest in them. In certain structures, the fees receivable may be collected directly from the investors and have therefore not been included in the table below. The Group also recorded other net income from financial instruments measured at fair value through profit or loss from mark-to-market movements arising primarily from derivatives, such as interest rate and currency swaps, as well as credit derivatives, through which the Group purchases protection, and financial liabilities designated at fair value, which do not qualify as interests because the Group does not absorb variability from the performance of the entity. Total income reported does not reflect economic hedges or other mitigating effects from the Group’s risk management activities.	For several sponsored SEs, no interest was held by the Group at year-end. However, during the respective reporting period the Group transferred assets, provided services and held instruments that did not qualify as an interest in these sponsored SEs, and accordingly earned income or incurred expenses from these entities. The table below presents the income earned and expenses incurred directly from these entities during the year, as well as corresponding asset information. The table does not include income earned and expenses incurred from risk management activities, including income and expenses from financial instruments used to economically hedge instruments transacted with the unconsolidated SEs. The majority of the fee income arose from investment funds that are sponsored and administrated by the Group, but managed by third parties. As the Group does not provide any investment management services, UBS was not exposed to risk from the performance of these entities and was therefore deemed not to have an interest in them. In certain structures, the fees receivable may be collected directly from the investors and have therefore not been included in the table below. The Group also recorded other net income from financial instruments measured at fair value through profit or loss from mark-to-market movements arising primarily from derivatives, such as interest rate and currency swaps, as well as credit derivatives, through which the Group purchases protection, and financial liabilities designated at fair value, which do not qualify as interests because the Group does not absorb variability from the performance of the entity. Total income reported does not reflect economic hedges or other mitigating effects from the Group’s risk management activities.
Assets transferred to securitization vehicles by UBS, at time of transfer	$ 0	$ 1,000,000
Assets transferred to securitization vehicles by third parties, at time of transfer	0	1,000,000
Assets transferred to client vehicles by UBS, at time of transfer	0	0
Assets transferred to client vehicles by third parties, at time of transfer	$ 9,000,000	$ 1,000,000
Securitization vehicles
Disclosure Of Unconsolidated Structured Entities [Line Items]
Disclosure of information about interests in structured entity [text block]	As of 31 December 2020 and 31 December 2019 , the Group held interests, both retained and acquired, in various securitiz ation vehicles, half of which are held within Group Functions – Non-core and Legacy Portfolio. The Investment Bank also retained interests in securitization vehicles related to financing, underwriting, secondary market and derivative trading activities. The numbers outlined in the table on the previous page may differ from the securitization positio ns presented in the 31 December 2020 Pillar 3 report under “Pillar 3 disclosures” at HYPERLINK "http://www.ubs.com/investors" ubs.com/investors , for th e following reasons: (i) exclusion of synthetic securitizations transacted with entities that are not SEs and transactions in which the Group did not have an interest because it did not absorb any risk ; (ii) a different measurement basis in certain cases ( e.g., IFRS carrying amount within the previous table compared with net exposure amount at default for Pillar 3 disclosures) ; and (iii) different classification of vehicles viewed as sponsored by the Group versus sponsored by third parties.	As of 31 December 2020 and 31 December 2019 , the Group held interests, both retained and acquired, in various securitiz ation vehicles, half of which are held within Group Functions – Non-core and Legacy Portfolio. The Investment Bank also retained interests in securitization vehicles related to financing, underwriting, secondary market and derivative trading activities. The numbers outlined in the table on the previous page may differ from the securitization positio ns presented in the 31 December 2020 Pillar 3 report under “Pillar 3 disclosures” at HYPERLINK "http://www.ubs.com/investors" ubs.com/investors , for th e following reasons: (i) exclusion of synthetic securitizations transacted with entities that are not SEs and transactions in which the Group did not have an interest because it did not absorb any risk ; (ii) a different measurement basis in certain cases ( e.g., IFRS carrying amount within the previous table compared with net exposure amount at default for Pillar 3 disclosures) ; and (iii) different classification of vehicles viewed as sponsored by the Group versus sponsored by third parties.
Client vehicles
Disclosure Of Unconsolidated Structured Entities [Line Items]
Disclosure of information about interests in structured entity [text block]	Client vehicles are established predominantly for clients to invest in specific assets or risk exposures. As of 31 December 2020 and 31 December 2019 , the Group retained interests in client vehicles sponsored by UBS and third parties that relate to financing and derivative activities , and to hedge structured product offerings. Included within these investments are securities guaranteed by US government agencies.	Client vehicles are established predominantly for clients to invest in specific assets or risk exposures. As of 31 December 2020 and 31 December 2019 , the Group retained interests in client vehicles sponsored by UBS and third parties that relate to financing and derivative activities , and to hedge structured product offerings. Included within these investments are securities guaranteed by US government agencies.
Investment funds
Disclosure Of Unconsolidated Structured Entities [Line Items]
Disclosure of information about interests in structured entity [text block]	Investment funds have a collective investment objective, and are managed by an investment manager. The Group holds interests in a number of investment funds, primarily resulting from seed investments or in order to hedge structured product offerings. In addition to the interests disclosed in the table on the previous page, the Group manages the assets of various pooled investment funds and receives fees that are based, in whole or part, on the net asset value of the fund and / or the performance of the fund. The specific fee structure is determined on the basis of various market factors and considers the nature of the fund and the jurisdiction of incorporation , as well as fee schedules negotiated with clients. These fee contracts represent an interest in the fund as they align the Group’s exposure with investors, providing a variable return that is based on the performance of the entity. Depending on the structure of the fund, these fees may be collected directly from the fund assets and / or from the investors. Any amounts due are collected on a regular basis and are generally backed by the assets of the fund. The Group did not have any material exposure to loss from these interests as of 31 December 2020 or as of 31 December 2019 . The total net asset value of the funds sponsored by UBS are included in the table on the previous page .	Investment funds have a collective investment objective, and are managed by an investment manager. The Group holds interests in a number of investment funds, primarily resulting from seed investments or in order to hedge structured product offerings. In addition to the interests disclosed in the table on the previous page, the Group manages the assets of various pooled investment funds and receives fees that are based, in whole or part, on the net asset value of the fund and / or the performance of the fund. The specific fee structure is determined on the basis of various market factors and considers the nature of the fund and the jurisdiction of incorporation , as well as fee schedules negotiated with clients. These fee contracts represent an interest in the fund as they align the Group’s exposure with investors, providing a variable return that is based on the performance of the entity. Depending on the structure of the fund, these fees may be collected directly from the fund assets and / or from the investors. Any amounts due are collected on a regular basis and are generally backed by the assets of the fund. The Group did not have any material exposure to loss from these interests as of 31 December 2020 or as of 31 December 2019 . The total net asset value of the funds sponsored by UBS are included in the table on the previous page .
Investment funds \| Sponsored [Member] \| Non Existence Of Interest [Member]
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total closing net asset value of sponsored investment funds	$ 37,000,000	$ 42,000,000
UBS AG
Disclosure Of Unconsolidated Structured Entities [Line Items]
Support provided to consolidated structured entity without having contractual obligation to do so	$ 0	$ 0
Information About How Maximum Exposure To Loss From Interests In Structured Entities Is Determined	UBS AG’s maximum exposure to loss is generally equal to the carrying amount of UBS AG’s interest in the SE, with the exception of guarantees, letters of credit and credit derivatives, for which the contract’s notional amount, adjusted for losses already incurred, represents the maximum loss that UBS AG is exposed to. In addition, the current fair value of derivative swap instruments with a positive replacement value only, such as total return swaps, is presented as the maximum exposure to loss. Risk exposure for these swap instruments could change over time with market movements.	UBS AG’s maximum exposure to loss is generally equal to the carrying amount of UBS AG’s interest in the SE, with the exception of guarantees, letters of credit and credit derivatives, for which the contract’s notional amount, adjusted for losses already incurred, represents the maximum loss that UBS AG is exposed to. In addition, the current fair value of derivative swap instruments with a positive replacement value only, such as total return swaps, is presented as the maximum exposure to loss. Risk exposure for these swap instruments could change over time with market movements.
Description of intentions to provide support to consolidated structured entity	In 2020 and 2019, UBS AG did not enter into any contractual obligation that could require UBS AG to provide financial support to consolidated SEs. In addition, UBS AG did not provide support, financial or otherwise, to a consolidated SE when UBS AG was not contractually obligated to do so, nor does UBS AG have any intention to do so in the future. Furthermore, UBS AG did not provide support, financial or otherwise, to a previously unconsolidated SE that resulted in UBS AG controlling the SE during the reporting period.	In 2020 and 2019, UBS AG did not enter into any contractual obligation that could require UBS AG to provide financial support to consolidated SEs. In addition, UBS AG did not provide support, financial or otherwise, to a consolidated SE when UBS AG was not contractually obligated to do so, nor does UBS AG have any intention to do so in the future. Furthermore, UBS AG did not provide support, financial or otherwise, to a previously unconsolidated SE that resulted in UBS AG controlling the SE during the reporting period.
Description of types of income from structured entities	In 2020 and 2019, income and expenses from interests in unconsolidated SEs primarily resulted from mark-to-market movements recognized in Other net income from financial instruments measured at fair value through profit of loss, which have generally been hedged with other financial instruments, as well as fee and commission income received from UBS-sponsored funds.	In 2020 and 2019, income and expenses from interests in unconsolidated SEs primarily resulted from mark-to-market movements recognized in Other net income from financial instruments measured at fair value through profit of loss, which have generally been hedged with other financial instruments, as well as fee and commission income received from UBS-sponsored funds.
UBS AG \| Non Existence Of Interest [Member]
Disclosure Of Unconsolidated Structured Entities [Line Items]
Description of types of income from structured entities	For several sponsored SEs, no interest was held by UBS AG at year-end. However, during the respective reporting period UBS AG transferred assets, provided services and held instruments that did not qualify as an interest in these sponsored SEs, and accordingly earned income or incurred expenses from these entities. The table below presents the income earned and expenses incurred directly from these entities during the year, as well as corresponding asset information. The table does not include income earned and expenses incurred from risk management activities, including income and expenses from financial instruments used to economically hedge instruments transacted with the unconsolidated SEs. The majority of the fee income arose from investment funds that are sponsored and administrated by UBS AG, but managed by third parties. As UBS AG does not provide any investment management services, UBS AG was not exposed to risk from the performance of these entities and was therefore deemed not to have an interest in them. In certain structures, the fees receivable may be collected directly from the investors and have therefore not been included in the table below. UBS AG also recorded other net income from financial instruments measured at fair value through profit or loss from mark-to-market movements arising primarily from derivatives, such as interest rate and currency swaps, as well as credit derivatives, through which UBS AG purchases protection, and financial liabilities designated at fair value, which do not qualify as interests because UBS AG does not absorb variability from the performance of the entity. Total income reported does not reflect economic hedges or other mitigating effects from UBS AG’s risk management activities.	For several sponsored SEs, no interest was held by UBS AG at year-end. However, during the respective reporting period UBS AG transferred assets, provided services and held instruments that did not qualify as an interest in these sponsored SEs, and accordingly earned income or incurred expenses from these entities. The table below presents the income earned and expenses incurred directly from these entities during the year, as well as corresponding asset information. The table does not include income earned and expenses incurred from risk management activities, including income and expenses from financial instruments used to economically hedge instruments transacted with the unconsolidated SEs. The majority of the fee income arose from investment funds that are sponsored and administrated by UBS AG, but managed by third parties. As UBS AG does not provide any investment management services, UBS AG was not exposed to risk from the performance of these entities and was therefore deemed not to have an interest in them. In certain structures, the fees receivable may be collected directly from the investors and have therefore not been included in the table below. UBS AG also recorded other net income from financial instruments measured at fair value through profit or loss from mark-to-market movements arising primarily from derivatives, such as interest rate and currency swaps, as well as credit derivatives, through which UBS AG purchases protection, and financial liabilities designated at fair value, which do not qualify as interests because UBS AG does not absorb variability from the performance of the entity. Total income reported does not reflect economic hedges or other mitigating effects from UBS AG’s risk management activities.
Assets transferred to securitization vehicles by UBS, at time of transfer	$ 0	$ 1,000,000
Assets transferred to securitization vehicles by third parties, at time of transfer	0	1,000,000
Assets transferred to client vehicles by UBS, at time of transfer	0	0
Assets transferred to client vehicles by third parties, at time of transfer	$ 9,000,000	$ 1,000,000
UBS AG \| Securitization vehicles
Disclosure Of Unconsolidated Structured Entities [Line Items]
Disclosure of information about interests in structured entity [text block]	As of 31 December 2020 and 31 December 2019 , UBS AG held interests, both r etained and acquired, in various securitization vehicles, half of which are held within Group Functions – Non-core and Legacy Portfolio. The Investment Bank also retained interests in securitization vehicles related to financing, underwriting, secondary market and derivative trading activities. The numbers outlined in the table on the previous page may differ from the securitization positio ns presented in the 31 December 2020 Pillar 3 report under “Pillar 3 disclosures” at HYPERLINK "http://www.ubs.com/investors" ubs.com/investors , for the following reasons: (i) exclusion of synthetic securitizations transacted with entities that are not SEs and transactions in which UBS AG did not have an interest because it did not absorb any risk ; (ii) a differe nt measurement basis in certain cases (e.g., IFRS carrying amount within the previous table compared with net exposure amount at default for Pillar 3 disclosures) ; and (iii) different classification of vehicles viewed as sponsored by UBS AG versus sponsore d by third parties.	As of 31 December 2020 and 31 December 2019 , UBS AG held interests, both r etained and acquired, in various securitization vehicles, half of which are held within Group Functions – Non-core and Legacy Portfolio. The Investment Bank also retained interests in securitization vehicles related to financing, underwriting, secondary market and derivative trading activities. The numbers outlined in the table on the previous page may differ from the securitization positio ns presented in the 31 December 2020 Pillar 3 report under “Pillar 3 disclosures” at HYPERLINK "http://www.ubs.com/investors" ubs.com/investors , for the following reasons: (i) exclusion of synthetic securitizations transacted with entities that are not SEs and transactions in which UBS AG did not have an interest because it did not absorb any risk ; (ii) a differe nt measurement basis in certain cases (e.g., IFRS carrying amount within the previous table compared with net exposure amount at default for Pillar 3 disclosures) ; and (iii) different classification of vehicles viewed as sponsored by UBS AG versus sponsore d by third parties.
UBS AG \| Client vehicles
Disclosure Of Unconsolidated Structured Entities [Line Items]
Disclosure of information about interests in structured entity [text block]	Client vehicles are established predominantly for clients to invest in specific assets or risk exposures. As of 31 December 2020 and 31 December 2019 , UBS AG retained interests in client vehicles sponsored by UBS and third parties that relate to financing and derivative activities , and to hedge structured product offerings. Included within these investments are securities guaranteed by US government agencies.	Client vehicles are established predominantly for clients to invest in specific assets or risk exposures. As of 31 December 2020 and 31 December 2019 , UBS AG retained interests in client vehicles sponsored by UBS and third parties that relate to financing and derivative activities , and to hedge structured product offerings. Included within these investments are securities guaranteed by US government agencies.
UBS AG \| Investment funds
Disclosure Of Unconsolidated Structured Entities [Line Items]
Disclosure of information about interests in structured entity [text block]	Investment funds have a collective investment objective, and are managed by an investment manager. UBS AG holds interests in a number of investment funds, primarily resulting from seed investments or in order to hedge structured product offerings. In addition to the interests disclosed in the table on the previous page, UBS AG manages the assets of various pooled investment funds and receives fees that are based, in whole or part, on the net asset value of the fund and / or the performance of the fund. The specific fee structure is determined on the basis of various market factors and considers the nature of the fund and the jurisdiction of incorporation , as well as fee schedules negotiated with clients. These fee contracts represent an interest in the fund as they align UBS AG ’s exposure with investors, providing a variable return that is based on the performance of the entity. Depending on the structure of the fund, these fees may be collected directly from the fund assets and / or from the investors. Any amounts due are collected on a regular basis and are generally backed by the assets of the fund. UBS AG did not have any material exposure to loss from these interests as of 31 December 2020 or as of 31 December 2019 . The total net asset value of the funds sponsored by UBS are included in the table on the previous page .	Investment funds have a collective investment objective, and are managed by an investment manager. UBS AG holds interests in a number of investment funds, primarily resulting from seed investments or in order to hedge structured product offerings. In addition to the interests disclosed in the table on the previous page, UBS AG manages the assets of various pooled investment funds and receives fees that are based, in whole or part, on the net asset value of the fund and / or the performance of the fund. The specific fee structure is determined on the basis of various market factors and considers the nature of the fund and the jurisdiction of incorporation , as well as fee schedules negotiated with clients. These fee contracts represent an interest in the fund as they align UBS AG ’s exposure with investors, providing a variable return that is based on the performance of the entity. Depending on the structure of the fund, these fees may be collected directly from the fund assets and / or from the investors. Any amounts due are collected on a regular basis and are generally backed by the assets of the fund. UBS AG did not have any material exposure to loss from these interests as of 31 December 2020 or as of 31 December 2019 . The total net asset value of the funds sponsored by UBS are included in the table on the previous page .
UBS AG \| Investment funds \| Sponsored [Member] \| Non Existence Of Interest [Member]
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total closing net asset value of sponsored investment funds	$ 37,000,000	$ 42,000,000

Interests in unconsolidated s_4

Interests in unconsolidated structured entities (Detail 1) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		$ 15,326	$ 11,247
Total liabilities		390	552
Financial assets at fair value held for trading
Disclosure Of Unconsolidated Structured Entities [Line Items]
Maximum exposure to loss	[1]	8,101	6,466
Total assets		8,101	6,466
Derivative financial instruments - assets
Disclosure Of Unconsolidated Structured Entities [Line Items]
Maximum exposure to loss	[1]	211	53
Total assets		213	55
Loans and advances to customers
Disclosure Of Unconsolidated Structured Entities [Line Items]
Maximum exposure to loss	[1]	179	174
Total assets		179	174
Financial assets at fair value not held for trading
Disclosure Of Unconsolidated Structured Entities [Line Items]
Maximum exposure to loss	[1]	208	997
Total assets		208	245
Financial assets measured at fair value through other comprehensive income
Disclosure Of Unconsolidated Structured Entities [Line Items]
Maximum exposure to loss	[1]	6,624	3,955
Total assets		6,624	3,955
Other financial assets measured at amortized cost
Disclosure Of Unconsolidated Structured Entities [Line Items]
Maximum exposure to loss	[1]	250	1,372
Total assets		0	351
Derivative financial instruments - liabilities
Disclosure Of Unconsolidated Structured Entities [Line Items]
Maximum exposure to loss	[1]	0	1
Total liabilities		390	552
Securitization vehicles
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets	[2]	416	888
Total liabilities		3	2
Assets held by the unconsolidated structured entities in which UBS had an interest	[3]	39,000	55,000
Assets recognised in entity's financial statements in relation to structured entities, which was held in Non-core and Legacy Portfolio unit within Group Functions		200	600
Securitization vehicles \| Financial assets at fair value held for trading
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		375	462
Securitization vehicles \| Derivative financial instruments - assets
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		6	9
Securitization vehicles \| Financial assets at fair value not held for trading
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		35	81
Securitization vehicles \| Other financial assets measured at amortized cost
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets			335
Securitization vehicles \| Derivative financial instruments - liabilities
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total liabilities	[4]	3	2
Client vehicles
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		6,805	4,118
Total liabilities		11	225
Assets held by the unconsolidated structured entities in which UBS had an interest	[5]	136,000	73,000
Client vehicles \| Financial assets at fair value held for trading
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		131	130
Client vehicles \| Derivative financial instruments - assets
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		49	9
Client vehicles \| Financial assets at fair value not held for trading
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets	[6]	1	8
Client vehicles \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		6,624	3,955
Client vehicles \| Other financial assets measured at amortized cost
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets	[6]	0	16
Client vehicles \| Derivative financial instruments - liabilities
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total liabilities		11	225
Investment funds
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		8,104	6,242
Total liabilities		376	324
Assets held by the unconsolidated structured entities in which UBS had an interest	[7]	484,000	413,000
Investment funds \| Financial assets at fair value held for trading
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		7,595	5,874
Investment funds \| Derivative financial instruments - assets
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		158	36
Investment funds \| Loans and advances to customers
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		179	174
Investment funds \| Financial assets at fair value not held for trading
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		172	157
Investment funds \| Derivative financial instruments - liabilities
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total liabilities		376	324
UBS AG
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		15,227	11,152
Total liabilities		390	552
UBS AG \| Financial assets at fair value held for trading
Disclosure Of Unconsolidated Structured Entities [Line Items]
Maximum exposure to loss	[1]	8,101	6,466
Total assets		8,101	6,466
UBS AG \| Derivative financial instruments - assets
Disclosure Of Unconsolidated Structured Entities [Line Items]
Maximum exposure to loss	[1]	211	53
Total assets		213	55
UBS AG \| Loans and advances to customers
Disclosure Of Unconsolidated Structured Entities [Line Items]
Maximum exposure to loss	[1]	179	174
Total assets		179	174
UBS AG \| Financial assets at fair value not held for trading
Disclosure Of Unconsolidated Structured Entities [Line Items]
Maximum exposure to loss	[1]	109	902
Total assets		109	151
UBS AG \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Unconsolidated Structured Entities [Line Items]
Maximum exposure to loss	[1]	6,624	3,955
Total assets		6,624	3,955
UBS AG \| Other financial assets measured at amortized cost
Disclosure Of Unconsolidated Structured Entities [Line Items]
Maximum exposure to loss	[1]	250	1,372
Total assets		0	351
UBS AG \| Derivative financial instruments - liabilities
Disclosure Of Unconsolidated Structured Entities [Line Items]
Maximum exposure to loss	[1]	0	1
Total liabilities		390	552
UBS AG \| Securitization vehicles
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets	[2]	416	888
Total liabilities		3	2
Assets held by the unconsolidated structured entities in which UBS had an interest	[3]	39,000	55,000
Assets recognised in entity's financial statements in relation to structured entities, which was held in Non-core and Legacy Portfolio unit within Group Functions		200	600
UBS AG \| Securitization vehicles \| Financial assets at fair value held for trading
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		375	462
UBS AG \| Securitization vehicles \| Derivative financial instruments - assets
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		6	9
UBS AG \| Securitization vehicles \| Financial assets at fair value not held for trading
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		35	81
UBS AG \| Securitization vehicles \| Other financial assets measured at amortized cost
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets			335
UBS AG \| Securitization vehicles \| Derivative financial instruments - liabilities
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total liabilities	[4]	3	2
UBS AG \| Client vehicles
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		6,805	4,118
Total liabilities		11	225
Assets held by the unconsolidated structured entities in which UBS had an interest	[5]	136,000	73,000
UBS AG \| Client vehicles \| Financial assets at fair value held for trading
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		131	130
UBS AG \| Client vehicles \| Derivative financial instruments - assets
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		49	9
UBS AG \| Client vehicles \| Financial assets at fair value not held for trading
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets	[6]	1	8
UBS AG \| Client vehicles \| Financial assets measured at fair value through other comprehensive income
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		6,624	3,955
UBS AG \| Client vehicles \| Other financial assets measured at amortized cost
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets	[6]	0	16
UBS AG \| Client vehicles \| Derivative financial instruments - liabilities
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total liabilities		11	225
UBS AG \| Investment funds
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		8,005	6,147
Total liabilities		376	324
Assets held by the unconsolidated structured entities in which UBS had an interest	[7]	484,000	413,000
UBS AG \| Investment funds \| Financial assets at fair value held for trading
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		7,595	5,874
UBS AG \| Investment funds \| Derivative financial instruments - assets
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		158	36
UBS AG \| Investment funds \| Loans and advances to customers
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		179	174
UBS AG \| Investment funds \| Financial assets at fair value not held for trading
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total assets		73	62
UBS AG \| Investment funds \| Derivative financial instruments - liabilities
Disclosure Of Unconsolidated Structured Entities [Line Items]
Total liabilities		$ 376	$ 324

[1]	For the purpose of this disclosure, maximum exposure to loss amounts do not consider the risk-reducing effects of collateral or other credit enhancements
[2]	As of 31 December 2020, USD 0.2 billion of the USD 0.4 billion (31 December 2019: USD 0.6 billion of the USD 0.9 billion) was held in Group Functions – Non-core and Legacy Portfolio.
[3]	Represents the principal amount outstanding.
[4]	Comprised of credit default swap liabilities and other swap liabilities. The maximum exposure to loss for credit default swap liabilities is equal to the sum of the negative carrying amount and the notional amount. For other swap liabilities, no maximum exposure to loss is reported.
[5]	Represents the market value of total assets.
[6]	Represents the carrying amount of loan commitments. The maximum exposure to loss for these instruments is equal to the notional amount.
[7]	Represents the net asset value of the investment funds sponsored by UBS and the carrying amount of UBS’s interests in the investment funds not sponsored by UBS.

Interests in unconsolidated s_5

Interests in unconsolidated structured entities (Detail 2) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Unconsolidated Structured Entities [Line Items]
Net interest income		$ 5,862	$ 4,501	$ 5,048
Net fee and commission income		19,186	17,413	17,895
in which UBS did not have an interest at year-end
Disclosure Of Unconsolidated Structured Entities [Line Items]
Net interest income		15	(2)
Net fee and commission income		60	63
Other net income from financial instruments measured at fair value through profit or loss		2	11
Total income		76	72
Securitization vehicles \| in which UBS did not have an interest at year-end
Disclosure Of Unconsolidated Structured Entities [Line Items]
Net interest income		1	(1)
Other net income from financial instruments measured at fair value through profit or loss		0	19
Total income		1	19
Asset information	[1]	0	2,000
Client vehicles \| in which UBS did not have an interest at year-end
Disclosure Of Unconsolidated Structured Entities [Line Items]
Net interest income		12	0
Net fee and commission income		1	13
Other net income from financial instruments measured at fair value through profit or loss		17	(18)
Total income		30	(5)
Asset information	[2]	9,000	1,000
Investment funds \| in which UBS did not have an interest at year-end
Disclosure Of Unconsolidated Structured Entities [Line Items]
Net interest income		2	(1)
Net fee and commission income		58	50
Other net income from financial instruments measured at fair value through profit or loss		(15)	9
Total income		45	58
Asset information	[3]	37,000	42,000
UBS AG
Disclosure Of Unconsolidated Structured Entities [Line Items]
Net interest income		5,788	4,415	4,971
Net fee and commission income		19,207	17,460	$ 17,930
UBS AG \| in which UBS did not have an interest at year-end
Disclosure Of Unconsolidated Structured Entities [Line Items]
Net interest income		15	(2)
Net fee and commission income		60	63
Other net income from financial instruments measured at fair value through profit or loss		2	11
Total income		76	72
UBS AG \| Securitization vehicles \| in which UBS did not have an interest at year-end
Disclosure Of Unconsolidated Structured Entities [Line Items]
Net interest income		1	(1)
Other net income from financial instruments measured at fair value through profit or loss		0	19
Total income		1	19
Asset information	[1]	0	2,000
UBS AG \| Client vehicles \| in which UBS did not have an interest at year-end
Disclosure Of Unconsolidated Structured Entities [Line Items]
Net interest income		12	0
Net fee and commission income		1	13
Other net income from financial instruments measured at fair value through profit or loss		17	(18)
Total income		30	(5)
Asset information	[2]	9,000	1,000
UBS AG \| Investment funds \| in which UBS did not have an interest at year-end
Disclosure Of Unconsolidated Structured Entities [Line Items]
Net interest income		2	(1)
Net fee and commission income		58	50
Other net income from financial instruments measured at fair value through profit or loss		(15)	9
Total income		45	58
Asset information	[3]	$ 37,000	$ 42,000

[1]	Represents the amount of assets transferred to the respective securitization vehicles
[2]	Represents the amount of assets transferred to the respective client vehicles.
[3]	Represents the total net asset value of the respective investment funds.

Changes in organization and a_2

Changes in organization and acquisitions and disposals of subsidiaries and businesses (Narrative) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Changes In Organisation [Line Items]
Investments in subsidiaries and associates	$ 1,557	$ 1,051	$ 1,099
Expected future stake in strategic partnership entity with Sumitomo Mitsui Trust Holdings	51.00%
UBS Brasil Servicos
Disclosure Of Changes In Organisation [Line Items]
Proportion of ownership interest in subsidiary	50.01%
Decrease in proportion of ownership in subsidiaries that do not result in loss of control	49.99%
Increase (decrease) without loss of control of subsidiary, intangible assets other than goodwill	$ 147
Non-controlling interest in acquiree recognised at acquisition date	115
UBS Austria
Disclosure Of Changes In Organisation [Line Items]
Expected future pre-tax gain upon sale of businesses	$ 100
Clearstream Fund Centre AG [Member]
Disclosure Of Changes In Organisation [Line Items]
Proportion of ownership interest in associate	48.80%
Decrease in proportion of ownership in subsidiaries that result in loss of control	51.20%
Gains (losses) recognised when control is lost	$ 631
Increase (decrease) without loss of control of subsidiary, intangible assets other than goodwill	399
UBS AG
Disclosure Of Changes In Organisation [Line Items]
Investments in subsidiaries and associates	$ 1,557	$ 1,051	$ 1,099
Expected future stake in strategic partnership entity with Sumitomo Mitsui Trust Holdings	51.00%
UBS AG \| UBS Brasil Servicos
Disclosure Of Changes In Organisation [Line Items]
Proportion of ownership interest in subsidiary	50.01%
Decrease in proportion of ownership in subsidiaries that do not result in loss of control	44.99%
Increase (decrease) without loss of control of subsidiary, intangible assets other than goodwill	$ 147
Non-controlling interest in acquiree recognised at acquisition date	115
UBS AG \| UBS Austria
Disclosure Of Changes In Organisation [Line Items]
Expected future pre-tax gain upon sale of businesses	$ 100
UBS AG \| Clearstream Fund Centre AG [Member]
Disclosure Of Changes In Organisation [Line Items]
Proportion of ownership interest in associate	48.80%
Decrease in proportion of ownership in subsidiaries that result in loss of control	51.20%
Gains (losses) recognised when control is lost	$ 631
Increase (decrease) without loss of control of subsidiary, intangible assets other than goodwill	$ 399

Finance lease receivables (Narr

Finance lease receivables (Narrative) (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Leases For Lessor [Line Items]
Total minimum lease payments	$ 1,521	$ 1,544
UBS AG
Disclosure Of Leases For Lessor [Line Items]
Total minimum lease payments	$ 1,521	$ 1,544

Finance lease receivables (Deta

Finance lease receivables (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Maturity Analysis Of Finance Lease Payments Receivable [LineItems]
Total minimum lease payments	$ 1,521	$ 1,544
Unearned finance income	60	89
Present value	1,461	1,455
Within 1 year
Disclosure Of Maturity Analysis Of Finance Lease Payments Receivable [LineItems]
Total minimum lease payments	450	448
Unearned finance income	25	31
Present value	426	417
Due between 1 and 5 years
Disclosure Of Maturity Analysis Of Finance Lease Payments Receivable [LineItems]
Total minimum lease payments	856	874
Unearned finance income	31	52
Present value	825	822
Thereafter
Disclosure Of Maturity Analysis Of Finance Lease Payments Receivable [LineItems]
Total minimum lease payments	215	221
Unearned finance income	4	6
Present value	210	215
UBS AG
Disclosure Of Maturity Analysis Of Finance Lease Payments Receivable [LineItems]
Total minimum lease payments	1,521	1,544
Unearned finance income	60	89
Present value	1,461	1,455
UBS AG \| Within 1 year
Disclosure Of Maturity Analysis Of Finance Lease Payments Receivable [LineItems]
Total minimum lease payments	450	448
Unearned finance income	25	31
Present value	426	417
UBS AG \| Due between 1 and 5 years
Disclosure Of Maturity Analysis Of Finance Lease Payments Receivable [LineItems]
Total minimum lease payments	856	874
Unearned finance income	31	52
Present value	825	822
UBS AG \| Thereafter
Disclosure Of Maturity Analysis Of Finance Lease Payments Receivable [LineItems]
Total minimum lease payments	215	221
Unearned finance income	4	6
Present value	$ 210	$ 215

Related parties (Narrative) (De

Related parties (Narrative) (Detail) SFr in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020CHF (SFr)shares	Dec. 31, 2020USD ($)shares	Dec. 31, 2019CHF (SFr)shares	Dec. 31, 2019USD ($)shares	Dec. 31, 2018CHF (SFr)	Dec. 31, 2018USD ($)
Related Parties [Line Items]
Payments to external board members	SFr 6.6	$ 7	SFr 7.3	$ 7.3	SFr 7.4	$ 7.6
Number of shares held by close family members of key management personnel	0	0	0	0
Number of shares held by entities that are directly or indirectly controlled or jointly controlled by key management personnel or their close family members	0	0	0	0
Description of ownership of UBS Group AG's shares by members of BoD or GEB	As of 31 December 2020, no member of the BoD or GEB was the beneficial owner of more than 1% of UBS Group AG’s shares.	As of 31 December 2020, no member of the BoD or GEB was the beneficial owner of more than 1% of UBS Group AG’s shares.
Description of related party transactions with entities controlled by key management personnel	In 2020 and 2019, UBS did not enter into transactions with entities that are directly or indirectly controlled or jointly controlled by UBS’s key management personnel or their close family members and as of 31 December 2020, 31 December 2019 and 31 December 2018, there were no outstanding balances related to such transactions. Furthermore, in 2020 and 2019, entities controlled by key management personnel did not sell any goods or provide any services to UBS, and therefore did not receive any fees from UBS. UBS also did not provide services to such entities in 2020 and 2019, and therefore also received no fees.	In 2020 and 2019, UBS did not enter into transactions with entities that are directly or indirectly controlled or jointly controlled by UBS’s key management personnel or their close family members and as of 31 December 2020, 31 December 2019 and 31 December 2018, there were no outstanding balances related to such transactions. Furthermore, in 2020 and 2019, entities controlled by key management personnel did not sell any goods or provide any services to UBS, and therefore did not receive any fees from UBS. UBS also did not provide services to such entities in 2020 and 2019, and therefore also received no fees.
UBS AG
Related Parties [Line Items]
Payments to external board members	SFr 6.6	$ 7	SFr 7.3	$ 7.3	SFr 7.4	$ 7.6
Number of shares held by close family members of key management personnel	0	0	0	0
Number of shares held by entities that are directly or indirectly controlled or jointly controlled by key management personnel or their close family members	0	0	0	0
Description of ownership of UBS Group AG's shares by members of BoD or GEB	As of 31 December 2020, no member of the BoD or GEB was the beneficial owner of more than 1% of UBS Group AG’s shares.	As of 31 December 2020, no member of the BoD or GEB was the beneficial owner of more than 1% of UBS Group AG’s shares.
Description of related party transactions with entities controlled by key management personnel	In 2020 and 2019, UBS AG did not enter into transactions with entities that are directly or indirectly controlled or jointly controlled by UBS AG’s key management personnel or their close family members and as of 31 December 2020, 31 December 2019 and 31 December 2018, there were no outstanding balances related to such transactions. Furthermore, in 2020 and 2019, entities controlled by key management personnel did not sell any goods or provide any services to UBS AG, and therefore did not receive any fees from UBS AG. UBS AG also did not provide services to such entities in 2020 and 2019, and therefore also received no fees.	In 2020 and 2019, UBS AG did not enter into transactions with entities that are directly or indirectly controlled or jointly controlled by UBS AG’s key management personnel or their close family members and as of 31 December 2020, 31 December 2019 and 31 December 2018, there were no outstanding balances related to such transactions. Furthermore, in 2020 and 2019, entities controlled by key management personnel did not sell any goods or provide any services to UBS AG, and therefore did not receive any fees from UBS AG. UBS AG also did not provide services to such entities in 2020 and 2019, and therefore also received no fees.

Related parties (Detail 1)

Related parties (Detail 1) SFr in Millions, $ in Millions		12 Months Ended
Related parties (Detail 1) SFr in Millions, $ in Millions		Dec. 31, 2020CHF (SFr)		Dec. 31, 2020USD ($)	Dec. 31, 2019CHF (SFr)		Dec. 31, 2019USD ($)	Dec. 31, 2018CHF (SFr)		Dec. 31, 2018USD ($)
Remuneration Of Key Management Personnel [Line Items]
Base salaries and other cash payments	[1]			$ 33			$ 32			$ 27
Incentive awards - cash	[2]			18			14			15
Annual incentive award under DCCP				27			21			22
Employer's contributions to retirement benefit plans				3			3			3
Benefits in kind, fringe benefits (at market value)				1			1			2
Equity-based compensation	[3]			47			37			40
Total		SFr 121	[4]	$ 129	SFr 107	[4]	$ 108	SFr 107	[4]	$ 109
Vesting period of shares granted to key management personnel		5 years		5 years	5 years		5 years	5 years		5 years
Applicable performance award currency exchange rate		0.94		0.94	0.99		0.99	0.98		0.98
UBS AG
Remuneration Of Key Management Personnel [Line Items]
Base salaries and other cash payments	[1]			$ 31			$ 30			$ 25
Incentive awards - cash	[2]			17			13			14
Annual incentive award under DCCP				26			20			21
Employer's contributions to retirement benefit plans				2			2			3
Benefits in kind, fringe benefits (at market value)				1			1			2
Equity-based compensation	[3]			45			34			38
Total		SFr 115	[4]	$ 122	SFr 101	[4]	$ 101	SFr 100	[4]	$ 102
Vesting period of shares granted to key management personnel		5 years		5 years	5 years		5 years	5 years		5 years
Applicable performance award currency exchange rate		0.94		0.94	0.99		0.99	0.98		0.98

[1]	May include role-based allowances in line with market practice and regulatory requirements
[2]	The cash portion may also include blocked shares in line with regulatory requirements.
[3]	Compensation expense is based on the share price on grant date taking into account performance conditions. Refer to Note 27 for more information. For GEB members, equity-based compensation for 2020 and 2019 was entirely composed of LTIP awards and equity-based compensation for 2018 was entirely composed of EOP awards. For the Chairman of the BoD the equity-based compensation for 2020, 2019 and 2018 was entirely composed of UBS shares.
[4]	Swiss franc amounts disclosed represent the respective US dollar amounts translated at the applicable performance award currency exchange rates (2020: USD / CHF 0.94; 2019: USD / CHF 0.99; 2018: USD / CHF 0.98).

Related parties (Detail 2)

Related parties (Detail 2) - shares		12 Months Ended
Related parties (Detail 2) - shares		Dec. 31, 2020	Dec. 31, 2019
Equity Holdings Of Key Management Personnel [Line Items]
Number of shares held by members of the BoD, GEB and parties closely linked to them	[1],[2]	5,288,317	6,887,826
UBS AG
Equity Holdings Of Key Management Personnel [Line Items]
Number of shares held by members of the BoD, GEB and parties closely linked to them	[1],[2]	4,956,640	6,609,848

[1]	Excludes shares granted under variable compensation plans with forfeiture provisions.
[2]	No options were held in 2020 and 2019 by non-independent menbers of the BoD and any GEB member or any of its related parties

Related parties (Detail 3)

Related parties (Detail 3) SFr in Millions, $ in Millions		12 Months Ended
Related parties (Detail 3) SFr in Millions, $ in Millions		Dec. 31, 2020CHF (SFr)	[2]	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Loans Advances And Mortgages To Key Management Personnel [Line Items]
Balance at the beginning of the year	[1],[3]	SFr 32		$ 33	$ 34
Additions	[1]			14	9
Reductions	[1]			(8)	(11)
Balance at the end of the year	[1],[3]	34		38	33
UBS AG
Loans Advances And Mortgages To Key Management Personnel [Line Items]
Balance at the beginning of the year	[1],[4]	22		23	28
Additions	[1]			13	6
Reductions	[1]			(5)	(11)
Balance at the end of the year	[1],[4]	SFr 28		$ 31	$ 23

[1]	All loans are secured loans
[2]	Swiss franc amounts disclosed represent the respective US dollar amounts translated at the relevant year-end closing exchange rate.
[3]	There were no unused uncommitted credit facilities as of 31 December 2020 and 31 December 2019.
[4]	There were no unused uncommitted credit facilities as of 31 December 2020 and 31 December 2019.

Related parties (Detail 4)

Related parties (Detail 4) - USD ($) $ in Millions	12 Months Ended
Related parties (Detail 4) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Outstanding Balances For Related Party Transactions [Line Items]
Carrying amount at the beginning of the year	$ 982	$ 829
Additions	527	145
Reductions	(1,001)	(5)
Foreign currency translation	123	13
Carrying amount at the end of the year	630	982
of which: unsecured loans	621	971
Other transactions with associates and joint ventures
Payments to associates and joint ventures for goods and services received	139	124
Fees received for services provided to associates and joint ventures	128	1
Liabilities to associates and joint ventures	91	101
Commitments and contingent liabilities to associates and joint ventures	9	1,598
UBS AG
Outstanding Balances For Related Party Transactions [Line Items]
Carrying amount at the beginning of the year	982	829
Additions	527	145
Reductions	(1,001)	(5)
Foreign currency translation	123	13
Carrying amount at the end of the year	630	982
of which: unsecured loans	621	971
Other transactions with associates and joint ventures
Payments to associates and joint ventures for goods and services received	139	124
Fees received for services provided to associates and joint ventures	128	1
Liabilities to associates and joint ventures	91	101
Commitments and contingent liabilities to associates and joint ventures	$ 9	$ 1,598

Related parties (Detail 5)

Related parties (Detail 5) - UBS AG - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Receivables
Loans and advances to customers		$ 1,470	$ 1,255
Financial assets at fair value held for trading		76	180
Other financial assets measured at amortized cost		38	60
Payables
Customer deposits		3,324	2,314
Funding from UBS Group AG and its subsidiaries	[1],[2]	53,979	47,866
Other financial liabilities measured at amortized cost		1,820	1,829
Other financial liabilities designated at fair value	[3]	$ 1,375	$ 217

[1]	Represents funding from UBS Group AG to UBS AG.
[2]	UBS AG has also recognized funding from UBS Group AG and its subsidiaries that is designated at fair value. Refer to Note 19b for more information.
[3]	Represents funding recognized from UBS Group AG and its subsidiaries that is designated at fair value. Refer to Note 19b for more information.

Invested assets and net new m_3

Invested assets and net new money (Detail 1) - USD ($) $ in Billions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Invested Assets And Net New Money [Line Items]
Fund assets managed by UBS		$ 397	$ 358
Discretionary assets		1,459	1,209
Other invested assets		2,331	2,040
Total invested assets	[1]	4,187	3,607	$ 3,101
of which: double counts		311	248
Net new money	[1]	127	51
UBS AG
Invested Assets And Net New Money [Line Items]
Fund assets managed by UBS		397	358
Discretionary assets		1,459	1,209
Other invested assets		2,331	2,040
Total invested assets	[1]	4,187	3,607	$ 3,101
of which: double counts		311	248
Net new money	[1]	$ 127	$ 51

[1]	Includes double counts.

Invested assets and net new m_4

Invested assets and net new money (Detail 2) - USD ($) $ in Billions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Development Of Invested Assets [Line Items]
Total invested assets at the beginning of the year	[1]	$ 3,607	$ 3,101
Net new money	[1]	127	51
Market movements	[2]	359	444
Foreign currency translation		96	6
Other effects		(1)	5
of which: acquisitions / (divestments)		0	(1)
Total invested assets at the end of the year	[1]	4,187	3,607
UBS AG
Development Of Invested Assets [Line Items]
Total invested assets at the beginning of the year	[1]	3,607	3,101
Net new money	[1]	127	51
Market movements	[2]	359	444
Foreign currency translation		96	6
Other effects		(1)	5
of which: acquisitions / (divestments)		0	(1)
Total invested assets at the end of the year	[1]	$ 4,187	$ 3,607

[1]	Includes double counts.
[2]	Includes interest and dividend income.

Currency translation rates (Det

Currency translation rates (Detail)		12 Months Ended
Currency translation rates (Detail)		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
1 CHF
Foreign Exchange Rates [Line Items]
Closing exchange rate		1.13	1.03
Average rate	[1]	1.07	1.01	1.02
1 EUR
Foreign Exchange Rates [Line Items]
Closing exchange rate		1.22	1.12
Average rate	[1]	1.15	1.12	1.18
1 GBP
Foreign Exchange Rates [Line Items]
Closing exchange rate		1.37	1.32
Average rate	[1]	1.29	1.28	1.33
100 JPY
Foreign Exchange Rates [Line Items]
Closing exchange rate		0.97	0.92
Average rate	[1]	0.94	0.92	0.91
UBS AG \| 1 CHF
Foreign Exchange Rates [Line Items]
Closing exchange rate		1.13	1.03
Average rate	[2]	1.07	1.01	1.02
UBS AG \| 1 EUR
Foreign Exchange Rates [Line Items]
Closing exchange rate		1.22	1.12
Average rate	[2]	1.15	1.12	1.18
UBS AG \| 1 GBP
Foreign Exchange Rates [Line Items]
Closing exchange rate		1.37	1.32
Average rate	[2]	1.29	1.28	1.33
UBS AG \| 100 JPY
Foreign Exchange Rates [Line Items]
Closing exchange rate		0.97	0.92
Average rate	[2]	0.94	0.92	0.91

[1]	Monthly income statement items of operations with a functional currency other than the US dollar are translated with month-end rates into US dollars. Disclosed average rates for a year represent an average of 12 month-end rates, weighted according to the income and expense volumes of all operations of the Group with the same functional currency for each month. Weighted average rates for individual business divisions may deviate from the weighted average rates for the Group.
[2]	Monthly income statement items of operations with a functional currency other than the US dollar are translated with month-end rates into US dollars. Disclosed average rates for a year represent an average of 12 month-end rates, weighted according to the income and expense volumes of all operations of UBS AG with the same functional currency for each month. Weighted average rates for individual business divisions may deviate from the weighted average rates for UBS AG.

Events after the reporting pe_2

Events after the reporting period (Narrative) (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Adjusting Events After Reporting Period [Line Items]
Operating profit / (loss) before tax	$ 8,155	$ 5,577	$ 5,991
Net profit / (loss) attributable to shareholders	$ 6,557	$ 4,304	$ 4,516
Basic earnings per share	$ 1.83	$ 1.17	$ 1.21
Diluted earnings per share	$ 1.77	$ 1.14	$ 1.18
Increase (decrease) due to increase in provisions for litigation, regulatory and similar matters
Disclosure Of Adjusting Events After Reporting Period [Line Items]
Operating profit / (loss) before tax	$ (72)
Net profit / (loss) attributable to shareholders	$ (72)
Basic earnings per share	$ (0.02)
Diluted earnings per share	$ (0.02)
UBS AG
Disclosure Of Adjusting Events After Reporting Period [Line Items]
Operating profit / (loss) before tax	$ 7,699	$ 5,169	$ 5,458
Net profit / (loss) attributable to shareholders	6,196	$ 3,965	$ 4,107
UBS AG \| Increase (decrease) due to increase in provisions for litigation, regulatory and similar matters
Disclosure Of Adjusting Events After Reporting Period [Line Items]
Operating profit / (loss) before tax	(72)
Net profit / (loss) attributable to shareholders	$ (72)

Main differences between IFRS_2

Main differences between IFRS and Swiss GAAP (Narrative) (Detail)	12 Months Ended
	Dec. 31, 2020
Main Differences Between IFRS And Swiss GAAP [Line Items]
Goodwill, maximum useful life (in years)	5 years
Goodwill, maximum useful life for justified exceptional cases (in years)	10 years
Intangible assets with indefinite lives, maximum useful life (in years)	5 years
Intangible assets with indefinite lives, maximum useful life for justified exceptional cases (in years)	10 years
UBS AG [Member]
Main Differences Between IFRS And Swiss GAAP [Line Items]
Goodwill, maximum useful life (in years)	5 years
Goodwill, maximum useful life for justified exceptional cases (in years)	10 years
Intangible assets with indefinite lives, maximum useful life (in years)	5 years
Intangible assets with indefinite lives, maximum useful life for justified exceptional cases (in years)	10 years

Supplemental guarantor inform_3

Supplemental guarantor information (Narrative) (Detail) - UBS AG $ in Billions	12 Months Ended
	Dec. 31, 2020USD ($)
Supplemental Guarantor Information [Line Items]
Joint and several liability	$ 10.1
Increase decrease in joint and several liability	$ (7.3)

Supplemental guarantor consolid

Supplemental guarantor consolidated income statement (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019		Dec. 31, 2018
Condensed Income Statements Captions [Line Items]
Interest income from financial instruments measured at amortized cost and fair value through other comprehensive income		$ 8,810	$ 10,684		$ 10,100
Interest expense from financial instruments measured at amortized cost		(4,247)	(7,194)		(6,391)
Net interest income from financial instruments measured at fair value through profit or loss		1,299	1,011		1,338
Net interest income		5,862	4,501		5,048
Other net income from financial instruments measured at fair value through profit or loss		6,960	6,842		6,960
Credit loss (expense) / release		(694)	(78)		(118)
Fee and commission income	[1]	20,961	19,110		19,598
Fee and commission expense		(1,775)	(1,696)		(1,703)
Net fee and commission income		19,186	17,413		17,895
Other income		1,076	212		428
Total operating income		32,390	28,889	[2]	30,213	[2]
Personnel expenses		17,224	16,084		16,132
General and administrative expenses		4,885	5,288		6,797
Depreciation and impairment of property, equipment and software		2,069	1,765		1,228
Amortization and impairment of goodwill and intangible assets		57	175		65
Total operating expenses		24,235	23,312		24,222
Operating profit / (loss) before tax		8,155	5,577		5,991
Tax expense / (benefit)		1,583	1,267		1,468
Net profit / (loss)		6,572	4,310		4,522
Net profit / (loss) attributable to non-controlling interests		15	6		7
Net profit / (loss) attributable to shareholders		6,557	4,304		4,516
UBS AG (consolidated)
Condensed Income Statements Captions [Line Items]
Interest income from financial instruments measured at amortized cost and fair value through other comprehensive income		8,816	10,703		10,121
Interest expense from financial instruments measured at amortized cost		(4,333)	(7,303)		(6,494)
Net interest income from financial instruments measured at fair value through profit or loss		1,305	1,015		1,344
Net interest income		5,788	4,415		4,971
Other net income from financial instruments measured at fair value through profit or loss		6,930	6,833		6,953
Credit loss (expense) / release		(695)	(78)		(117)
Fee and commission income	[3]	20,982	19,156		19,632
Fee and commission expense		(1,775)	(1,696)		(1,703)
Net fee and commission income		19,207	17,460		17,930
Other income		1,549	677		905
Total operating income		32,780	29,307	[2]	30,642	[2]
Personnel expenses		14,686	13,801		13,992
General and administrative expenses		8,486	8,586		10,075
Depreciation and impairment of property, equipment and software		1,851	1,576		1,052
Amortization and impairment of goodwill and intangible assets		57	175		65
Total operating expenses		25,081	24,138		25,184
Operating profit / (loss) before tax		7,699	5,169		5,458
Tax expense / (benefit)		1,488	1,198		1,345
Net profit / (loss)		6,211	3,971		4,113
Net profit / (loss) attributable to non-controlling interests		15	6		7
Net profit / (loss) attributable to shareholders		6,196	3,965		4,107
UBS AG (consolidated) \| Elimination entries
Condensed Income Statements Captions [Line Items]
Interest income from financial instruments measured at amortized cost and fair value through other comprehensive income		(818)	(1,928)		(2,275)
Interest expense from financial instruments measured at amortized cost		1,134	2,298		2,405
Net interest income from financial instruments measured at fair value through profit or loss		(273)	(327)		(91)
Net interest income		43	42		38
Other net income from financial instruments measured at fair value through profit or loss		118	(322)		(110)
Credit loss (expense) / release		0	0		(19)
Fee and commission income		(984)	(997)		(656)
Fee and commission expense		961	986		648
Net fee and commission income		(23)	(11)		(8)
Other income		(5,941)	(6,442)		(6,651)
Total operating income		(5,803)	(6,733)		(6,749)
Personnel expenses		0	0		0
General and administrative expenses		(2,481)	(2,627)		(3,490)
Depreciation and impairment of property, equipment and software		(116)	(108)		0
Amortization and impairment of goodwill and intangible assets		1	(88)		0
Total operating expenses		(2,596)	(2,823)		(3,490)
Operating profit / (loss) before tax		(3,207)	(3,911)		(3,259)
Tax expense / (benefit)		(107)	(21)		68
Net profit / (loss)		(3,100)	(3,890)		(3,327)
Net profit / (loss) attributable to non-controlling interests		0	0		0
Net profit / (loss) attributable to shareholders		(3,100)	(3,889)		(3,327)
UBS AG (consolidated) \| UBS AG (standalone) \| Reportable legal entities
Condensed Income Statements Captions [Line Items]
Interest income from financial instruments measured at amortized cost and fair value through other comprehensive income	[4]	3,386	4,864	[5]	4,532	[6]
Interest expense from financial instruments measured at amortized cost	[4]	(3,694)	(6,547)	[5]	(6,109)	[6]
Net interest income from financial instruments measured at fair value through profit or loss	[4]	1,103	1,177	[5]	1,079	[6]
Net interest income	[4]	794	(506)	[5]	(497)	[6]
Other net income from financial instruments measured at fair value through profit or loss	[4]	4,857	5,116	[5]	5,204	[6]
Credit loss (expense) / release	[4]	(352)	(51)	[5]	(37)	[6]
Fee and commission income	[4]	3,731	3,285	[5]	2,655	[6]
Fee and commission expense	[4]	(644)	(674)	[5]	(851)	[6]
Net fee and commission income	[4]	3,087	2,610	[5],[7]	1,804	[6]
Other income	[4]	4,671	4,899	[5]	5,248	[6]
Total operating income	[4]	13,057	12,069	[5]	11,722	[6]
Personnel expenses	[4]	3,458	3,251	[5]	3,592	[6]
General and administrative expenses	[4]	3,507	3,467	[5]	4,691	[6]
Depreciation and impairment of property, equipment and software	[4]	1,008	861	[5]	715	[6]
Amortization and impairment of goodwill and intangible assets	[4]	5	94	[5]	3	[6]
Total operating expenses	[4]	7,978	7,672	[5]	9,001	[6]
Operating profit / (loss) before tax	[4]	5,079	4,396	[5]	2,721	[6]
Tax expense / (benefit)	[4]	238	175	[5]	29	[6]
Net profit / (loss)	[4]	4,840	4,221	[5]	2,691	[6]
Net profit / (loss) attributable to non-controlling interests	[4]	0	0	[5]	0	[6]
Net profit / (loss) attributable to shareholders	[4]	4,840	4,221	[5]	2,691	[6]
UBS AG (consolidated) \| UBS Switzerland AG (standalone) \| Reportable legal entities
Condensed Income Statements Captions [Line Items]
Interest income from financial instruments measured at amortized cost and fair value through other comprehensive income	[4]	3,636	4,048		4,230
Interest expense from financial instruments measured at amortized cost	[4]	(513)	(737)		(598)
Net interest income from financial instruments measured at fair value through profit or loss	[4]	164	(228)		(270)
Net interest income	[4]	3,288	3,083		3,363
Other net income from financial instruments measured at fair value through profit or loss	[4]	911	924		889
Credit loss (expense) / release	[4]	(286)	7		(52)
Fee and commission income	[4]	4,585	4,342		4,474
Fee and commission expense	[4]	(829)	(819)		(391)
Net fee and commission income	[4]	3,756	3,523	[7]	4,083
Other income	[4]	233	259		198
Total operating income	[4]	7,902	7,796		8,480
Personnel expenses	[4]	2,017	1,936		1,890
General and administrative expenses	[4]	3,313	3,181		3,471
Depreciation and impairment of property, equipment and software	[4]	261	221		21
Amortization and impairment of goodwill and intangible assets	[4]	0	0		0
Total operating expenses	[4]	5,591	5,338		5,382
Operating profit / (loss) before tax	[4]	2,311	2,458		3,098
Tax expense / (benefit)	[4]	444	514		670
Net profit / (loss)	[4]	1,868	1,944		2,428
Net profit / (loss) attributable to non-controlling interests	[4]	0	0		0
Net profit / (loss) attributable to shareholders	[4]	1,868	1,944		2,428
UBS AG (consolidated) \| Other subsidiaries \| Reportable legal entities
Condensed Income Statements Captions [Line Items]
Interest income from financial instruments measured at amortized cost and fair value through other comprehensive income	[8]	2,612	3,719		3,634
Interest expense from financial instruments measured at amortized cost	[8]	(1,261)	(2,317)		(2,192)
Net interest income from financial instruments measured at fair value through profit or loss	[8]	311	394		625
Net interest income	[8]	1,662	1,796		2,068
Other net income from financial instruments measured at fair value through profit or loss	[8]	1,044	1,114		970
Credit loss (expense) / release	[8]	(56)	(33)		(9)
Fee and commission income	[8]	13,651	12,527		13,159
Fee and commission expense	[8]	(1,263)	(1,188)		(1,108)
Net fee and commission income	[8]	12,388	11,338		12,050
Other income	[8]	2,585	1,960		2,110
Total operating income	[8]	17,623	16,176		17,189
Personnel expenses	[8]	9,211	8,614		8,510
General and administrative expenses	[8]	4,147	4,565		5,403
Depreciation and impairment of property, equipment and software	[8]	698	602		316
Amortization and impairment of goodwill and intangible assets	[8]	52	170		62
Total operating expenses	[8]	14,108	13,951		14,291
Operating profit / (loss) before tax	[8]	3,515	2,225		2,898
Tax expense / (benefit)	[8]	912	530		577
Net profit / (loss)	[8]	2,603	1,695		2,321
Net profit / (loss) attributable to non-controlling interests	[8]	15	6		7
Net profit / (loss) attributable to shareholders	[8]	$ 2,588	$ 1,689		$ 2,314

[1]	For the year ended 31 December 2020, reflects third-party fee and commission income of USD 12,475 million for Global Wealth Management, USD 1,426 million for Personal & Corporate Banking, USD 3,129 million for Asset Management, USD 3,882 million for the Investment Bank and USD 49 million for Group Functions (for the year ended 31 December 2019: USD 11,694 million for Global Wealth Management, USD 1,307 million for Personal & Corporate Banking, USD 2,659 million for Asset Management, USD 3,355 million for the Investment Bank and USD 94 million for Group Functions; for the year ended 31 December 2018: USD 12,059 million for Global Wealth Management, USD 1,338 million for Personal & Corporate Banking, USD 2,579 million for Asset Management, USD 3,525 million for the Investment Bank and USD 97 million for Group Functions).
[2]	Effective as of 1 January 2020, the Investment Bank was realigned into two new business lines, Global Banking and Global Markets, which affects how the business is managed and therefore the allocation of operating income to the regions. The presentation of prior-year information reflects the new regional management structure of the Investment Bank.
[3]	For the year ended 31 December 2020, reflects third-party fee and commission income of USD 12,475 million for Global Wealth Management, USD 1,427 million for Personal & Corporate Banking, USD 3,129 million for Asset Management, USD 3,901 million for the Investment Bank and USD 50 million for Group Functions (for the year ended 31 December 2019: USD 11,694 million for Global Wealth Management, USD 1,307 million for Personal & Corporate Banking, USD 2,659 million for Asset Management, USD 3,397 million for the Investment Bank and USD 98 million for Group Functions; for the year ended 31 December 2018: USD 12,059 million for Global Wealth Management, USD 1,338 million for Personal & Corporate Banking, USD 2,579 million for Asset Management, USD 3,557 million for the Investment Bank and USD 100 million for Group Functions).
[4]	Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP
[5]	Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in a decrease in Net profit attributable to shareholders for the year ended 31 December 2019 of USD 61 million, almost entirely reflected within Other income.
[6]	Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in an increase in Net profit attributable to shareholders for the year ended 31 December 2018 of USD 521 million, almost entirely reflected within Other income.
[7]	Includes the effects of the transfer in 2019 of beneficial ownership of a portion of Global Wealth Management international business booked in Switzerland from UBS Switzerland AG to UBS AG. Refer to “Note 25 Changes in organization and other events affecting comparability” in the “UBS AG standalone financial statements” section of the UBS AG Standalone financial statements and regulatory information for the year ended 31 December 2019.
[8]	The ”Other subsidiaries“ column includes consolidated information for the UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG significant sub-groups, as well as standalone information for other subsidiaries.

Supplemental guarantor consol_2

Supplemental guarantor consolidated statement of comprehensive income (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Condensed Statement Of Income Captions [Line Items]
Net profit / (loss)		$ 6,572		$ 4,310		$ 4,522
Foreign currency translation, net of tax		21		(4)		(1)
Total other comprehensive income that may be reclassified to the income statement, net of tax		2,230		1,363		(855)
Defined benefit plans, net of tax		(218)		(186)		56
Own credit on financial liabilities designated at fair value, net of tax		(293)		(392)		509
Total other comprehensive income that will not be reclassified to the income statement, net of tax		(490)		(582)		563
Total other comprehensive income		1,740		781		(292)
Total comprehensive income		8,312		5,091		4,231
Comprehensive income attributable to shareholders
Condensed Statement Of Income Captions [Line Items]
Net profit / (loss)		6,557		4,304		4,516
Foreign currency translation, net of tax		1,095	[1]	104		(541)
Financial assets measured at fair value through other comprehensive income, net of tax		136		117		(45)
Cash flow hedges, net of tax		1,011	[2]	1,143		(269)
Cost of hedging, net of tax		(13)
Total other comprehensive income that may be reclassified to the income statement, net of tax		2,230		1,363		(855)
Defined benefit plans, net of tax		(218)		(186)		56
Own credit on financial liabilities designated at fair value, net of tax		(293)		(392)		509
Total other comprehensive income that will not be reclassified to the income statement, net of tax		(511)		(578)		565
Total other comprehensive income		1,719		785		(290)
Total comprehensive income		8,276		5,089		4,225
Comprehensive income attributable to non-controlling interests
Condensed Statement Of Income Captions [Line Items]
Net profit / (loss)		15		6		7
Foreign currency translation, net of tax		21		(4)		(1)
Total other comprehensive income that will not be reclassified to the income statement, net of tax		21		(4)		(1)
Total other comprehensive income		21		(4)		(1)
Total comprehensive income		36		2		5
UBS AG (consolidated)
Condensed Statement Of Income Captions [Line Items]
Net profit / (loss)		6,211		3,971		4,113
Foreign currency translation, net of tax		21		(4)		(1)
Total other comprehensive income that may be reclassified to the income statement, net of tax		2,165		1,351		(829)
Defined benefit plans, net of tax		(134)		(170)		175
Own credit on financial liabilities designated at fair value, net of tax		(293)		(392)		509
Total other comprehensive income that will not be reclassified to the income statement, net of tax		(406)		(566)		682
Total other comprehensive income		1,759		785		(147)
Total comprehensive income		7,970		4,756		3,967
UBS AG (consolidated) \| Comprehensive income attributable to shareholders
Condensed Statement Of Income Captions [Line Items]
Net profit / (loss)		6,196		3,965		4,107
Foreign currency translation, net of tax		1,030	[3]	92		(515)
Financial assets measured at fair value through other comprehensive income, net of tax		136		117		(45)
Cash flow hedges, net of tax		1,011	[4]	1,143		(269)
Cost of hedging, net of tax		(13)
Total other comprehensive income that may be reclassified to the income statement, net of tax		2,165		1,351		(829)
Defined benefit plans, net of tax		(134)		(170)		175
Own credit on financial liabilities designated at fair value, net of tax		(293)		(392)		509
Total other comprehensive income that will not be reclassified to the income statement, net of tax		(427)		(562)		684
Total other comprehensive income		1,738		789		(145)
Total comprehensive income		7,934		4,754		3,961
UBS AG (consolidated) \| Comprehensive income attributable to non-controlling interests
Condensed Statement Of Income Captions [Line Items]
Net profit / (loss)		15		6		7
Foreign currency translation, net of tax		21		(4)		(1)
Total other comprehensive income that will not be reclassified to the income statement, net of tax		21		(4)		(1)
Total other comprehensive income		21		(4)		(1)
Total comprehensive income		36		2		5
UBS AG (consolidated) \| Elimination entries
Condensed Statement Of Income Captions [Line Items]
Net profit / (loss)		(3,100)		(3,890)		(3,327)
Total comprehensive income		(4,088)		(4,007)		(3,509)
UBS AG (consolidated) \| Elimination entries \| Comprehensive income attributable to shareholders
Condensed Statement Of Income Captions [Line Items]
Net profit / (loss)		(3,100)		(3,889)		(3,327)
Foreign currency translation, net of tax		(969)		(102)		(169)
Financial assets measured at fair value through other comprehensive income, net of tax		0		0		0
Cash flow hedges, net of tax		(18)		(15)		(13)
Total other comprehensive income that may be reclassified to the income statement, net of tax		(988)		(117)		(182)
Defined benefit plans, net of tax		0		0		0
Total other comprehensive income that will not be reclassified to the income statement, net of tax		0		0		0
Total other comprehensive income		(988)		(117)		(182)
Total comprehensive income		(4,088)		(4,007)		(3,509)
UBS AG (consolidated) \| UBS AG (standalone) \| Reportable legal entities
Condensed Statement Of Income Captions [Line Items]
Net profit / (loss)	[5]	4,840		4,221	[6]	2,691	[7]
Total comprehensive income	[8]	5,451		4,616		2,560
UBS AG (consolidated) \| UBS AG (standalone) \| Reportable legal entities \| Comprehensive income attributable to shareholders
Condensed Statement Of Income Captions [Line Items]
Net profit / (loss)	[8]	4,840		4,221	[9]	2,691	[10]
Foreign currency translation, net of tax	[8]	81		5	[9]	(452)	[10]
Financial assets measured at fair value through other comprehensive income, net of tax	[8]	0		0	[9]	0	[10]
Cash flow hedges, net of tax	[8]	902		870	[9]	(277)	[10]
Cost of hedging, net of tax	[8]	(13)
Total other comprehensive income that may be reclassified to the income statement, net of tax	[8]	971		875	[9]	(729)	[10]
Defined benefit plans, net of tax	[8]	(67)		(89)	[9]	89	[10]
Own credit on financial liabilities designated at fair value, net of tax	[8]	(293)		(392)	[9]	509	[10]
Total other comprehensive income that will not be reclassified to the income statement, net of tax	[8]	(360)		(481)	[9]	598	[10]
Total other comprehensive income	[8]	611		394	[9]	(131)	[10]
Total comprehensive income	[8]	5,451		4,616	[9]	2,560	[10]
UBS AG (consolidated) \| UBS Switzerland AG (standalone) \| Reportable legal entities
Condensed Statement Of Income Captions [Line Items]
Net profit / (loss)	[5]	1,868		1,944		2,428
Total comprehensive income	[8]	3,015		2,228		2,195
UBS AG (consolidated) \| UBS Switzerland AG (standalone) \| Reportable legal entities \| Comprehensive income attributable to shareholders
Condensed Statement Of Income Captions [Line Items]
Net profit / (loss)	[8]	1,868		1,944		2,428
Foreign currency translation, net of tax	[8]	1,228		150		(109)
Financial assets measured at fair value through other comprehensive income, net of tax	[8]	0		0		0
Cash flow hedges, net of tax	[8]	26		140		2
Total other comprehensive income that may be reclassified to the income statement, net of tax	[8]	1,254		290		(107)
Defined benefit plans, net of tax	[8]	(107)		(6)		(126)
Total other comprehensive income that will not be reclassified to the income statement, net of tax	[8]	(107)		(6)		(126)
Total other comprehensive income	[8]	1,147		284		(233)
Total comprehensive income	[8]	3,015		2,228		2,195
UBS AG (consolidated) \| Other subsidiaries \| Reportable legal entities
Condensed Statement Of Income Captions [Line Items]
Net profit / (loss)	[11]	2,603		1,695		2,321
Total comprehensive income	[12]	3,592		1,919		2,721
UBS AG (consolidated) \| Other subsidiaries \| Reportable legal entities \| Comprehensive income attributable to shareholders
Condensed Statement Of Income Captions [Line Items]
Net profit / (loss)	[12]	2,588		1,689		2,314
Foreign currency translation, net of tax	[12]	690		39		215
Financial assets measured at fair value through other comprehensive income, net of tax	[12]	137		117		(45)
Cash flow hedges, net of tax	[12]	101		147		19
Total other comprehensive income that may be reclassified to the income statement, net of tax	[12]	928		303		189
Defined benefit plans, net of tax	[12]	40		(75)		212
Total other comprehensive income that will not be reclassified to the income statement, net of tax	[12]	40		(75)		212
Total other comprehensive income	[12]	968		228		401
Total comprehensive income	[12]	3,556		1,917		2,715
UBS AG (consolidated) \| Other subsidiaries \| Reportable legal entities \| Comprehensive income attributable to non-controlling interests
Condensed Statement Of Income Captions [Line Items]
Total comprehensive income	[12]	$ 36		$ 2		$ 5

[1]	Mainly driven by the strengthening of the Swiss franc (9%) and the euro (9%) against the US dollar
[2]	Mainly reflects an increase in net unrealized gains on US dollar hedging derivatives resulting from decreases in the relevant long-term US dollar interest rates, partly offset by the reclassification of net gains on hedging instruments from OCI to the income statement as the hedged forecast cash flows affected profit or loss.
[3]	Mainly driven by the strengthening of the Swiss franc (9%) and the euro (9%) against the US dollar
[4]	Mainly reflects an increase in net unrealized gains on US dollar hedging derivatives resulting from decreases in the relevant long-term US dollar interest rates, partly offset by the reclassification of net gains on hedging instruments from OCI to the income statement as the hedged forecast cash flows affected profit or loss.
[5]	Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP
[6]	Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in a decrease in Net profit attributable to shareholders for the year ended 31 December 2019 of USD 61 million, almost entirely reflected within Other income.
[7]	Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in an increase in Net profit attributable to shareholders for the year ended 31 December 2018 of USD 521 million, almost entirely reflected within Other income.
[8]	Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP
[9]	Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in a decrease in Total comprehensive income attributable to shareholders for the year ended 31 December 2019 of USD 56 million, reflecting a decrease of USD 61 million in Net profit attributable to shareholders and a USD 6 million increase in Total other comprehensive income attributable to shareholders.
[10]	Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in an increase in Total comprehensive income attributable to shareholders for the year ended 31 December 2018 of USD 438 million, reflecting an increase of USD 521 million in Net profit attributable to shareholders and a USD 83 million decrease in Total other comprehensive income attributable to shareholders.
[11]	The ”Other subsidiaries“ column includes consolidated information for the UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG significant sub-groups, as well as standalone information for other subsidiaries.
[12]	The ”Other subsidiaries“ column includes consolidated information for the UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG significant sub-groups, as well as standalone information for other subsidiaries.

Supplemental guarantor consol_3

Supplemental guarantor consolidated balance sheet (Detail) - USD ($) $ in Millions		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018		Jan. 01, 2018	Dec. 31, 2017
Assets
Cash and balances at central banks		$ 158,231		$ 107,068
Loans and advances to banks		15,444		12,447
Receivables from securities financing transactions		74,210		84,245
Cash collateral receivables on derivative instruments		32,737		23,289
Loans and advances to customers		379,528		326,786
Other financial assets measured at amortized cost		27,194		22,980
Total financial assets measured at amortized cost		687,345		576,815
Financial assets at fair value held for trading		125,397		127,514
of which: assets pledged as collateral that may be sold or repledged by counterparties		47,098		41,285
Derivative financial instruments	[1]	159,617		121,841
Brokerage receivables		24,659		18,007
Financial assets at fair value not held for trading	[2]	80,364		83,944
Total financial assets measured at fair value through profit or loss		390,037		351,307
Financial assets measured at fair value through other comprehensive income	[3]	8,258		6,345
Investments in subsidiaries and associates		1,557		1,051		$ 1,099
Property, equipment and software		13,109		12,804		12,702
Goodwill and intangible assets		6,480		6,469
Deferred tax assets		9,212	[4]	9,548	[4],[5]	10,116		$ 10,195
Other non-financial assets		9,768		7,856
Total assets		1,125,765		972,194	[6]	958,500	[6]	938,799
Liabilities
Amounts due to banks		11,050		6,570
Payables from securities financing transactions		6,321		7,778
Cash collateral payables on derivative instruments		37,312		31,415
Customer deposits		524,605		448,284
Debt issued measured at amortized cost	[7]	139,232		110,497
Other financial liabilities measured at amortized cost		9,729		9,712
Total financial liabilities measured at amortized cost		728,250		614,256
Financial liabilities at fair value held for trading	[8],[9],[10]	33,595		30,591
Derivative financial instruments	[1],[8],[10],[11]	161,102		120,880
Brokerage payables designated at fair value		38,742		37,233
Debt issued designated at fair value		61,243		66,809
Other financial liabilities designated at fair value		30,387		35,940
Total financial liabilities measured at fair value through profit or loss		325,069		291,452
Provisions		2,828		2,974
Other non-financial liabilities		9,854		8,837		9,065		9,486
Total liabilities		1,066,000		917,519		905,429		886,894
Equity
Equity attributable to shareholders		59,445		54,501		52,896		51,847
Equity attributable to non-controlling interests		319		174
Total equity		59,765		54,675	[12]	53,060
Total equity before the adoption of IFRIC 23						53,071		51,906	$ 51,906
Total liabilities and equity		1,125,765		972,194		958,500		938,799
UBS AG (consolidated)
Assets
Cash and balances at central banks		158,231		107,068
Loans and advances to banks		15,344		12,379
Receivables from securities financing transactions		74,210		84,245
Cash collateral receivables on derivative instruments		32,737		23,289
Loans and advances to customers		380,977		327,992
Other financial assets measured at amortized cost		27,219		23,012
Total financial assets measured at amortized cost		688,717		577,985
Financial assets at fair value held for trading		125,492		127,695
of which: assets pledged as collateral that may be sold or repledged by counterparties		47,098		41,285
Derivative financial instruments	[13]	159,618		121,843
Brokerage receivables		24,659		18,007
Financial assets at fair value not held for trading	[2]	80,038		83,636
Total financial assets measured at fair value through profit or loss		389,808		351,181
Financial assets measured at fair value through other comprehensive income	[3]	8,258		6,345
Investments in subsidiaries and associates		1,557		1,051		1,099
Property, equipment and software		11,958		11,826		11,742
Goodwill and intangible assets		6,480		6,469
Deferred tax assets		9,174	[4]	9,524	[4],[14]	10,077		10,132
Other non-financial assets		9,374		7,547
Total assets		1,125,327		971,927	[6]	958,066	[6]	939,539
Liabilities
Amounts due to banks		11,050		6,570
Payables from securities financing transactions		6,321		7,778
Cash collateral payables on derivative instruments		37,313		31,416
Customer deposits		527,929		450,591
Funding from UBS Group AG and its subsidiaries	[15],[16]	53,979		47,866
Debt issued measured at amortized cost	[7]	85,351		62,835
Other financial liabilities measured at amortized cost		10,421		10,373
Total financial liabilities measured at amortized cost		732,364		617,429
Financial liabilities at fair value held for trading	[8],[9],[10]	33,595		30,591
Derivative financial instruments	[8],[10],[11],[13]	161,102		120,880
Brokerage payables designated at fair value		38,742		37,233
Debt issued designated at fair value		59,868		66,592
Other financial liabilities designated at fair value		31,773		36,157
Total financial liabilities measured at fair value through profit or loss		325,080		291,452
Provisions		2,791		2,938
Other non-financial liabilities		7,018		6,211	[14]	6,318		6,542
Total liabilities		1,067,254		918,031		905,667		888,143
Equity
Equity attributable to shareholders		57,754		53,722		52,224		51,338
Equity attributable to non-controlling interests		319		174
Total equity		58,073		53,896		52,389
Total equity before the adoption of IFRIC 23						52,400		51,397	$ 51,397
Total liabilities and equity		1,125,327		971,927		$ 958,066		$ 939,539
UBS AG (consolidated) \| Elimination entries
Assets
Loans and advances to banks		(50,678)		(45,931)
Receivables from securities financing transactions		(29,735)		(27,771)
Cash collateral receivables on derivative instruments		(11,671)		(9,038)
Loans and advances to customers		(20,767)		(17,612)
Other financial assets measured at amortized cost		(2,644)		(2,327)
Total financial assets measured at amortized cost		(115,495)		(102,679)
Financial assets at fair value held for trading		(1,634)		(1,479)
of which: assets pledged as collateral that may be sold or repledged by counterparties		(13,617)		(22,701)
Derivative financial instruments		(45,041)		(30,899)
Brokerage receivables		(2)		(1)
Financial assets at fair value not held for trading		(15,672)		(14,498)
Total financial assets measured at fair value through profit or loss		(62,350)		(46,877)
Investments in subsidiaries and associates		(52,526)		(51,156)
Property, equipment and software		(350)		(385)
Goodwill and intangible assets		28		35
Deferred tax assets		(1)
Other non-financial assets		(183)		(140)
Total assets		(230,878)		(201,202)
Liabilities
Amounts due to banks		(107,527)		(113,181)
Payables from securities financing transactions		(29,899)		(27,696)
Cash collateral payables on derivative instruments		(11,618)		(9,027)
Customer deposits		23,745		38,861
Debt issued measured at amortized cost		3		(70)
Other financial liabilities measured at amortized cost		(3,175)		(2,844)
Total financial liabilities measured at amortized cost		(128,470)		(113,956)
Financial liabilities at fair value held for trading		(1,529)		(1,317)
Derivative financial instruments		(45,043)		(30,852)
Brokerage payables designated at fair value		(7)		(3)
Debt issued designated at fair value		(54)		(38)
Other financial liabilities designated at fair value		(2,927)		(3,445)
Total financial liabilities measured at fair value through profit or loss		(49,559)		(35,655)
Other non-financial liabilities		(49)		21	[14]
Total liabilities		(178,078)		(149,591)
Equity
Equity attributable to shareholders		(52,800)		(51,611)
Total equity		(52,800)		(51,611)
Total liabilities and equity		(230,878)		(201,202)
UBS AG (consolidated) \| UBS AG (standalone) \| Reportable legal entities
Assets
Cash and balances at central banks		34,426	[17]	36,386	[18],[19]
Loans and advances to banks		40,171	[17]	32,888	[18],[19]
Receivables from securities financing transactions		56,568	[17]	56,946	[18],[19]
Cash collateral receivables on derivative instruments		32,771	[17]	22,830	[18],[19]
Loans and advances to customers		99,952	[17]	88,386	[18],[19]
Other financial assets measured at amortized cost		8,411	[17]	5,723	[18],[19]
Total financial assets measured at amortized cost		272,299	[17]	243,159	[18],[19]
Financial assets at fair value held for trading		110,812	[17]	113,802	[18],[19]
of which: assets pledged as collateral that may be sold or repledged by counterparties		54,468	[17]	58,599	[18],[19]
Derivative financial instruments		154,313	[17]	118,708	[18],[19]
Brokerage receivables		16,898	[17]	11,453	[18],[19]
Financial assets at fair value not held for trading		46,198	[17]	49,525	[18],[19]
Total financial assets measured at fair value through profit or loss		328,221	[17]	293,488	[18],[19]
Financial assets measured at fair value through other comprehensive income		187	[17]	176	[18],[19]
Investments in subsidiaries and associates		53,606	[17]	52,140	[18],[19]
Property, equipment and software		6,999	[17]	7,318	[18],[19]
Goodwill and intangible assets		217	[17]	222	[18],[19]
Deferred tax assets		840	[17]	618	[14],[18],[19]
Other non-financial assets		6,641	[17]	5,060	[18],[19]
Total assets		669,010	[17]	602,181	[18],[19]
Liabilities
Amounts due to banks		41,414	[17]	55,738	[18],[19]
Payables from securities financing transactions		17,247	[17]	21,326	[18],[19]
Cash collateral payables on derivative instruments		35,875	[17]	30,571	[18],[19]
Customer deposits		98,441	[17]	85,954	[18],[19]
Funding from UBS Group AG and its subsidiaries	[15]	53,979	[17]	47,866	[18],[19]
Debt issued measured at amortized cost		75,658	[17]	54,317	[18],[19]
Other financial liabilities measured at amortized cost		5,285	[17]	5,347	[18],[19]
Total financial liabilities measured at amortized cost		327,898	[17]	301,119	[18],[19]
Financial liabilities at fair value held for trading		28,800	[17]	25,292	[18],[19]
Derivative financial instruments		156,192	[17]	117,597	[18],[19]
Brokerage payables designated at fair value		25,045	[17]	25,358	[19]
Debt issued designated at fair value		58,986	[17]	65,677	[18],[19]
Other financial liabilities designated at fair value		11,255	[17]	8,571	[18],[19]
Total financial liabilities measured at fair value through profit or loss		280,279	[17]	242,495	[18],[19]
Provisions		1,293	[17]	1,101	[18],[19]
Other non-financial liabilities		2,173	[17]	1,657	[14],[18],[19]
Total liabilities		611,643	[17]	546,372	[18],[19]
Equity
Equity attributable to shareholders		57,367	[17]	55,808	[18],[19]
Total equity		57,367	[17]	55,808	[18],[19]
Total liabilities and equity		669,010	[17]	602,181	[18],[19]
UBS AG (consolidated) \| UBS Switzerland AG (standalone) \| Reportable legal entities
Assets
Cash and balances at central banks		91,638	[17]	60,926	[18]
Loans and advances to banks		6,385	[17]	7,992	[18]
Receivables from securities financing transactions		4,026	[17]	12,536	[18]
Cash collateral receivables on derivative instruments		1,543	[17]	990	[18]
Loans and advances to customers		228,279	[17]	193,543	[18]
Other financial assets measured at amortized cost		8,084	[17]	8,168	[18]
Total financial assets measured at amortized cost		339,956	[17]	284,154	[18]
Financial assets at fair value held for trading		55	[17]	53	[18]
of which: assets pledged as collateral that may be sold or repledged by counterparties		1	[17]	0	[18]
Derivative financial instruments		6,342	[17]	4,251	[18]
Financial assets at fair value not held for trading		13,068	[17]	6,701	[18]
Total financial assets measured at fair value through profit or loss		19,464	[17]	11,004	[18]
Investments in subsidiaries and associates		38	[17]	28	[18]
Property, equipment and software		1,335	[17]	1,144	[18]
Deferred tax assets		1	[17]	0	[14],[18]
Other non-financial assets		2,063	[17]	1,770	[18]
Total assets		362,857	[17]	298,101	[18]
Liabilities
Amounts due to banks		34,096	[17]	28,240	[18]
Payables from securities financing transactions		566	[17]	565	[18]
Cash collateral payables on derivative instruments		561	[17]	98	[18]
Customer deposits		293,371	[17]	239,226	[18]
Debt issued measured at amortized cost		9,687	[17]	8,583	[18]
Other financial liabilities measured at amortized cost		2,567	[17]	2,666	[18]
Total financial liabilities measured at amortized cost		340,848	[17]	279,379	[18]
Financial liabilities at fair value held for trading		335	[17]	383	[18]
Derivative financial instruments		5,593	[17]	4,046	[18]
Total financial liabilities measured at fair value through profit or loss		5,927	[17]	4,429	[18]
Provisions		301	[17]	196	[18]
Other non-financial liabilities		987	[17]	931	[14],[18]
Total liabilities		348,063	[17]	284,936	[18]
Equity
Equity attributable to shareholders		14,794	[17]	13,165	[18]
Total equity		14,794	[17]	13,165	[18]
Total liabilities and equity		362,857	[17]	298,101	[18]
UBS AG (consolidated) \| Other subsidiaries \| Reportable legal entities
Assets
Cash and balances at central banks		32,167	[20]	9,756	[21]
Loans and advances to banks		19,465	[20]	17,430	[21]
Receivables from securities financing transactions		43,350	[20]	42,534	[21]
Cash collateral receivables on derivative instruments		10,093	[20]	8,508	[21]
Loans and advances to customers		73,513	[20]	63,676	[21]
Other financial assets measured at amortized cost		13,368	[20]	11,448	[21]
Total financial assets measured at amortized cost		191,957	[20]	153,351	[21]
Financial assets at fair value held for trading		16,260	[20]	15,320	[21]
of which: assets pledged as collateral that may be sold or repledged by counterparties		6,247	[20]	5,386	[21]
Derivative financial instruments		44,005	[20]	29,782	[21]
Brokerage receivables		7,763	[20]	6,556	[21]
Financial assets at fair value not held for trading		36,444	[20]	41,908	[21]
Total financial assets measured at fair value through profit or loss		104,473	[20]	93,565	[21]
Financial assets measured at fair value through other comprehensive income		8,072	[20]	6,169	[21]
Investments in subsidiaries and associates		439	[20]	39	[21]
Property, equipment and software		3,975	[20]	3,749	[21]
Goodwill and intangible assets		6,234	[20]	6,212	[21]
Deferred tax assets		8,334	[20]	8,906	[14],[21]
Other non-financial assets		854	[20]	857	[21]
Total assets		324,337	[20]	272,848	[21]
Liabilities
Amounts due to banks		43,066	[20]	35,773	[21]
Payables from securities financing transactions		18,407	[20]	13,583	[21]
Cash collateral payables on derivative instruments		12,495	[20]	9,773	[21]
Customer deposits		112,372	[20]	86,550	[21]
Debt issued measured at amortized cost		3	[20]	5	[21]
Other financial liabilities measured at amortized cost		5,745	[20]	5,204	[21]
Total financial liabilities measured at amortized cost		192,088	[20]	150,888	[21]
Financial liabilities at fair value held for trading		5,989	[20]	6,233	[21]
Derivative financial instruments		44,359	[20]	30,089	[21]
Brokerage payables designated at fair value		13,704	[20]	11,877
Debt issued designated at fair value		935	[20]	952	[21]
Other financial liabilities designated at fair value		23,445	[20]	31,031	[21]
Total financial liabilities measured at fair value through profit or loss		88,433	[20]	80,184	[21]
Provisions		1,197	[20]	1,641	[21]
Other non-financial liabilities		3,907	[20]	3,602	[14],[21]
Total liabilities		285,625	[20]	236,314	[21]
Equity
Equity attributable to shareholders		38,393	[20]	36,359	[21]
Equity attributable to non-controlling interests		319	[20]	174	[21]
Total equity		38,712	[20]	36,534	[21]
Total liabilities and equity		$ 324,337	[20]	$ 272,848	[21]

[1]	Derivative financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of the entity and all of the counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. Refer to Note 22 for more information on netting arrangements.
[2]	Refer to Note 24c for more information on product type and fair value hierarchy categorization.
[3]	Refer to Note 21c for more information about product type and fair value hierarchy categorization. Refer also to Note 9 and Note 20 for more information about expected credit loss measurement.
[4]	Less deferred tax liabilities as applicable.
[5]	Comparative-period information has been restated. Refer to Note 1b for more information
[6]	Information has been restated where applicable. Refer to Note 1b for more information.
[7]	Net of bifurcated embedded derivatives, the fair value of which was not material for the periods presented.
[8]	Carrying amount is fair value. Management believes that this best represents the cash flows that would have to be paid if these positions had to be settled or closed out.
[9]	Contractual maturities of financial liabilities at fair value held for trading are: USD 32.6 billion due within 1 month (2019: USD 30 billion), USD 1.0 billion due between 1 month and 1 year (2019: USD 0.6 billion) and USD 0 billion due between 1 and 5 years (2019: USD 0 billion). 5 Includes USD 32 million (2019: 0 million) related to fair values of derivative loan commitments and forward starting reverse repurchase agreements classified as derivatives, presented within “Due within 1 month”. The full contractual committed amount of USD 31.3 billion (2019: USD 26.6 billion) is presented in Note 10 under notional amounts.
[10]	Except for financial liabilities at fair value held for trading and derivative financial instruments (see footnote 3), the amounts presented generally represent undiscounted cash flows of future interest and principal payments
[11]	Includes USD 32 million (2019: 0 million) related to fair values of derivative loan commitments and forward starting reverse repurchase agreements classified as derivatives, presented within “Due within 1 month”. The full contractual committed amount of USD 31.3 billion (2019: USD 26.6 billion) is presented in Note 10 under notional amounts.
[12]	Refer to the “Accounting and financial reporting” and “Consolidated financial statements” sections of this report for information on the restatement of comparative information, where applicable
[13]	Financial assets and liabilities are presented net on the balance sheet if UBS AG has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of the entity and all of the counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. Refer to Note 25 for more information on netting arrangements.
[14]	Comparative-period information has been restated. Refer to Note 1b for more information.
[15]	Represents funding from UBS Group AG to UBS AG.
[16]	UBS AG has also recognized funding from UBS Group AG and its subsidiaries that is designated at fair value. Refer to Note 19b for more information.
[17]	Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP
[18]	Amounts presented for UBS AG standalone and UBS Switzerland AG standalone represent IFRS standalone information. Refer to the UBS AG standalone and UBS Switzerland AG standalone financial statements under “Complementary financial information” at ubs.com/investors for information prepared in accordance with Swiss GAAP. 2 Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in an increase in Investments in subsidiaries and associates as of 31 December 2019 of USD 929 million and an increase in Equity attributable to shareholders as of 31 December 2019 of USD 914 million
[19]	Effective from the second quarter of 2020, UBS AG accounts for its investments in associates under the equity method of accounting and no longer at cost less impairment. The new measurement policy will result in more relevant information regarding the value of UBS AG’s investments in associates. The change was applied retrospectively to all prior periods presented, resulting in an increase in Investments in subsidiaries and associates as of 31 December 2019 of USD 929 million and an increase in Equity attributable to shareholders as of 31 December 2019 of USD 914 million.
[20]	The ”Other subsidiaries“ column includes consolidated information for the UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG significant sub-groups, as well as standalone information for other subsidiaries.
[21]	The ”Other subsidiaries“ column includes consolidated information for the UBS Americas Holding LLC, UBS Europe SE and UBS Asset Management AG significant sub-groups, as well as standalone information for other subsidiaries. 4 Comparative-period information has been restated. Refer to Note 1b for more information.

Supplemental guarantor consol_4

Supplemental guarantor consolidated statement of cash flows (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Condensed Cash Flow Statements Captions [Line Items]
Net cash flow from / (used in) operating activities		$ 36,958		$ 19,705		$ 28,913
Cash flow from / (used in) investing activities
Purchase of subsidiaries, associates and intangible assets		(46)		(26)		(287)
Disposal of subsidiaries, associates and intangible assets	[1]	674		114		137
Purchase of property, equipment and software		(1,854)		(1,584)		(1,688)
Disposal of property, equipment and software		366		11		114
Purchase of financial assets measured at fair value through other comprehensive income		(6,290)		(3,424)		(1,999)
Disposal and redemption of financial assets measured at fair value through other comprehensive income		4,530		3,913		1,361
Net (purchase) / redemption of debt securities measured at amortized cost		(4,166)		(562)		(3,770)
Net cash flow from / (used in) investing activities		(6,785)		(1,558)		(6,132)
Cash flow from / (used in) financing activities
Net short-term debt issued / (repaid)		23,845		(17,149)		(12,245)
Distributions paid on UBS shares		(2,607)		(2,544)		(2,440)
Repayment of lease liabilities		(569)		(518)
Issuance of long-term debt, including debt issued designated at fair value		80,255		65,047		60,682
Repayment of long-term debt, including debt issued designated at fair value		(87,098)		(68,883)		(44,344)
Net changes in non-controlling interests		(6)		(8)		(31)
Net cash flow from / (used in) financing activities		12,432		(25,614)		190
Total cash flow
Cash and cash equivalents at the beginning of the year	[2]	119,873		126,079		104,834
Net cash flow from / (used in) operating, investing and financing activities		42,605		(7,467)		22,971
Effects of exchange rate differences on cash and cash equivalents		11,052		1,261		(1,726)
Cash and cash equivalents at the end of the year	[2]	173,531		119,873		126,079
Net cash flow from / (used in) operating activities includes:
of which: cash and balances at central banks	[3]	158,088		106,957		108,268
of which: loans and advances to banks		14,028		11,386		15,678
of which: money market paper	[4]	1,415		1,530		2,133
Clearstream Fund Centre AG
Cash flow from / (used in) investing activities
Disposal of subsidiaries, associates and intangible assets		426
UBS AG (consolidated)
Condensed Cash Flow Statements Captions [Line Items]
Net cash flow from / (used in) operating activities		36,581		18,805		27,744
Cash flow from / (used in) investing activities
Purchase of subsidiaries, associates and intangible assets		(46)		(26)		(287)
Disposal of subsidiaries, associates and intangible assets	[1]	674		114		137
Purchase of property, equipment and software		(1,573)		(1,401)		(1,473)
Disposal of property, equipment and software		364		11		114
Purchase of financial assets measured at fair value through other comprehensive income		(6,290)		(3,424)		(1,999)
Disposal and redemption of financial assets measured at fair value through other comprehensive income		4,530		3,913		1,361
Net (purchase) / redemption of debt securities measured at amortized cost		(4,166)		(562)		(3,770)
Net cash flow from / (used in) investing activities		(6,506)		(1,374)		(5,918)
Cash flow from / (used in) financing activities
Net short-term debt issued / (repaid)		23,845		(17,149)		(12,245)
Distributions paid on UBS shares		(3,848)		(3,250)		(3,098)
Repayment of lease liabilities		(547)		496
Issuance of long-term debt, including debt issued designated at fair value		72,273		59,199		54,726
Repayment of long-term debt, including debt issued designated at fair value		(83,825)		(68,883)		(44,344)
Funding from UBS Group AG and its subsidiaries		4,606		5,848		5,956
Net changes in non-controlling interests		(6)		(8)		(31)
Net activity related to group internal capital transactions and dividends		0		0		0
Net cash flow from / (used in) financing activities		12,498		(24,738)		963
Total cash flow
Cash and cash equivalents at the beginning of the year	[5]	119,804		125,853		104,787
Net cash flow from / (used in) operating, investing and financing activities		42,573		(7,307)		22,789
Effects of exchange rate differences on cash and cash equivalents		11,053		1,258		(1,722)
Cash and cash equivalents at the end of the year	[5]	173,430		119,804		125,853
Net cash flow from / (used in) operating activities includes:
of which: cash and balances at central banks	[3]	158,088		106,957		108,268
of which: loans and advances to banks		13,928		11,317		15,452
of which: money market paper	[6]	1,415		1,530		2,133
UBS AG (consolidated) \| Clearstream Fund Centre AG
Cash flow from / (used in) investing activities
Disposal of subsidiaries, associates and intangible assets		426
UBS AG (consolidated) \| UBS AG (standalone) \| Reportable legal entities
Condensed Cash Flow Statements Captions [Line Items]
Net cash flow from / (used in) operating activities	[7]	(14,883)		17,531		(652)	[8]
Cash flow from / (used in) investing activities
Purchase of subsidiaries, associates and intangible assets	[7]	0		(6)		(124)	[8]
Disposal of subsidiaries, associates and intangible assets	[7]	14	[9]	100		97	[8]
Purchase of property, equipment and software	[7]	(714)		(628)		(822)	[8]
Disposal of property, equipment and software	[7]	361		10		111	[8]
Purchase of financial assets measured at fair value through other comprehensive income	[7]	(77)		(10)		(170)	[8]
Disposal and redemption of financial assets measured at fair value through other comprehensive income	[7]	79		10		20	[8]
Net (purchase) / redemption of debt securities measured at amortized cost	[7]	(3,021)		(1,045)		(1,000)	[8]
Net cash flow from / (used in) investing activities	[7]	(3,357)		(1,569)		(1,888)	[8]
Cash flow from / (used in) financing activities
Net short-term debt issued / (repaid)	[7]	23,828		(17,150)		(12,295)	[8]
Distributions paid on UBS shares	[7]	(3,848)		(3,250)		(3,098)	[8]
Repayment of lease liabilities	[7]	290		(262)
Issuance of long-term debt, including debt issued designated at fair value	[7]	70,987		58,437		53,294	[8]
Repayment of long-term debt, including debt issued designated at fair value	[7]	(82,930)		(67,113)		(42,759)	[8]
Funding from UBS Group AG and its subsidiaries	[7],[10]	4,606		5,848		5,956	[8]
Net changes in non-controlling interests	[7]	0		0		0	[8]
Net activity related to group internal capital transactions and dividends	[7]	2,984		3,569		3,000	[8]
Net cash flow from / (used in) financing activities	[7]	15,336		(19,922)		4,098	[8]
Total cash flow
Cash and cash equivalents at the beginning of the year	[7]	39,598	[11]	42,895	[8],[12]	41,570
Net cash flow from / (used in) operating, investing and financing activities	[7]	(2,905)		(3,960)		1,559	[8]
Effects of exchange rate differences on cash and cash equivalents	[7]	2,706		664		(234)	[8]
Cash and cash equivalents at the end of the year	[7]	39,400	[13]	39,598	[11]	42,895	[8],[12]
Net cash flow from / (used in) operating activities includes:
of which: cash and balances at central banks	[7]	34,283		36,275		36,248	[8]
of which: loans and advances to banks	[7]	4,085		2,697		4,849	[8]
of which: money market paper	[7],[14]	1,032		626		1,798	[8]
UBS AG (consolidated) \| UBS Switzerland AG \| Reportable legal entities
Condensed Cash Flow Statements Captions [Line Items]
Net cash flow from / (used in) operating activities	[7]	24,661		8,882		14,887	[8]
Cash flow from / (used in) investing activities
Purchase of subsidiaries, associates and intangible assets	[7]	(3)		0		(5)	[8]
Disposal of subsidiaries, associates and intangible assets	[7]	0	[9]	0		0	[8]
Purchase of property, equipment and software	[7]	(162)		(173)		(170)	[8]
Disposal of property, equipment and software	[7]	0		0		0	[8]
Purchase of financial assets measured at fair value through other comprehensive income	[7]	0		0		0	[8]
Disposal and redemption of financial assets measured at fair value through other comprehensive income	[7]	0		0		15	[8]
Net (purchase) / redemption of debt securities measured at amortized cost	[7]	132		437		2,111	[8]
Net cash flow from / (used in) investing activities	[7]	(33)		264		1,951	[8]
Cash flow from / (used in) financing activities
Net short-term debt issued / (repaid)	[7]	17		0		(3)	[8]
Distributions paid on UBS shares	[7]	0		0		0	[8]
Repayment of lease liabilities	[7]	0		0
Issuance of long-term debt, including debt issued designated at fair value	[7]	1,057		621		872	[8]
Repayment of long-term debt, including debt issued designated at fair value	[7]	(776)		(752)		(812)	[8]
Funding from UBS Group AG and its subsidiaries	[7],[10]	0		0		0	[8]
Net changes in non-controlling interests	[7]	0		0		0	[8]
Net activity related to group internal capital transactions and dividends	[7]	(1,307)		(2,055)		(2,372)	[8]
Net cash flow from / (used in) financing activities	[7]	(1,009)		(2,186)		(2,315)	[8]
Total cash flow
Cash and cash equivalents at the beginning of the year	[7]	62,551	[11]	54,757	[8],[12]	40,961
Net cash flow from / (used in) operating, investing and financing activities	[7]	23,619		6,961		14,523	[8]
Effects of exchange rate differences on cash and cash equivalents	[7]	7,171		833		(726)	[8]
Cash and cash equivalents at the end of the year	[7]	93,342	[13]	62,551	[11]	54,757	[8],[12]
Net cash flow from / (used in) operating activities includes:
of which: cash and balances at central banks	[7]	91,638		60,926		53,490	[8]
of which: loans and advances to banks	[7]	1,695		1,127		1,249	[8]
of which: money market paper	[7],[14]	9		498		18	[8]
UBS AG (consolidated) \| Other subsidiaries \| Reportable legal entities
Condensed Cash Flow Statements Captions [Line Items]
Net cash flow from / (used in) operating activities	[7]	26,804		(7,608)		13,509	[8]
Cash flow from / (used in) investing activities
Purchase of subsidiaries, associates and intangible assets	[7]	(43)		(20)		(158)	[8]
Disposal of subsidiaries, associates and intangible assets	[7]	660	[9]	14		40	[8]
Purchase of property, equipment and software	[7]	(697)		(600)		(481)	[8]
Disposal of property, equipment and software	[7]	3		1		3	[8]
Purchase of financial assets measured at fair value through other comprehensive income	[7]	(6,213)		(3,414)		(1,829)	[8]
Disposal and redemption of financial assets measured at fair value through other comprehensive income	[7]	4,451		3,904		1,325	[8]
Net (purchase) / redemption of debt securities measured at amortized cost	[7]	(1,277)		45		(4,881)	[8]
Net cash flow from / (used in) investing activities	[7]	(3,117)		(70)		(5,982)	[8]
Cash flow from / (used in) financing activities
Net short-term debt issued / (repaid)	[7]	0		0		53	[8]
Distributions paid on UBS shares	[7]	0		0		0	[8]
Repayment of lease liabilities	[7]	257		(234)
Issuance of long-term debt, including debt issued designated at fair value	[7]	229		142		560	[8]
Repayment of long-term debt, including debt issued designated at fair value	[7]	(118)		(1,017)		(772)	[8]
Funding from UBS Group AG and its subsidiaries	[7],[10]	0		0		0	[8]
Net changes in non-controlling interests	[7]	(6)		(8)		(31)	[8]
Net activity related to group internal capital transactions and dividends	[7]	(1,677)		(1,514)		(628)	[8]
Net cash flow from / (used in) financing activities	[7]	(1,829)		(2,630)		(820)	[8]
Total cash flow
Cash and cash equivalents at the beginning of the year	[7]	17,655	[11]	28,201	[8],[12]	22,256
Net cash flow from / (used in) operating, investing and financing activities	[7]	21,859		(10,308)		6,707	[8]
Effects of exchange rate differences on cash and cash equivalents	[7]	1,175		(239)		(762)	[8]
Cash and cash equivalents at the end of the year	[7]	40,689	[13]	17,655	[11]	28,201	[8],[12]
Net cash flow from / (used in) operating activities includes:
of which: cash and balances at central banks	[7]	32,167		9,756		18,530	[8]
of which: loans and advances to banks	[7]	8,148		7,493		9,354	[8]
of which: money market paper	[7],[14]	$ 374		$ 406		$ 318	[8]

[1]	Includes cash proceeds from the sale of the majority stake in Fondcenter AG of USD 426 million for the year ended 31 December 2020. Refer to Note 29 for more information. Also includes dividends received from associates
[2]	USD 3,828 million, USD 3,192 million and USD 5,245 million of cash and cash equivalents (mainly reflected in Loans and advances to banks) were restricted as of 31 December 2020, 31 December 2019 and 31 December 2018, respectively. Refer to Note 23 for more information.
[3]	Includes only balances with an original maturity of three months or less.
[4]	Money market paper is included in the balance sheet under Financial assets at fair value held for trading (31 December 2020: USD 117 million; 31 December 2019: USD 235 million; 31 December 2018: USD 366 million), Financial assets measured at fair value through other comprehensive income (31 December 2020: USD 178 million; 31 December 2019: USD 24 million; 31 December 2018: USD 8 million), Financial assets at fair value not held for trading (31 December 2020: USD 536 million; 31 December 2019: USD 920 million; 31 December 2018: USD 1,556 million) and Other financial assets measured at amortized cost (31 December 2020: USD 584 million; 31 December 2019: USD 351 million; 31 December 2018: USD 204 million).
[5]	USD 3,828 million, USD 3,192 million and USD 5,245 million of cash and cash equivalents (mainly reflected in Loans and advances to banks) were restricted as of 31 December 2020, 31 December 2019 and 31 December 2018, respectively. Refer to Note 23 for more information.
[6]	Money market paper is included in the balance sheet under Financial assets at fair value held for trading (31 December 2020: USD 117 million; 31 December 2019: USD 235 million; 31 December 2018: USD 366 million), Financial assets measured at fair value through other comprehensive income (31 December 2020: USD 178 million; 31 December 2019: USD 24 million; 31 December 2018: USD 8 million), Financial assets at fair value not held for trading (31 December 2020: USD 536 million; 31 December 2019: USD 920 million; 31 December 2018: USD 1,556 million) and Other financial assets measured at amortized cost (31 December 2020: USD 584 million; 31 December 2019: USD 351 million; 31 December 2018: USD 204 million).
[7]	Cash flows generally represent a third-party view from a UBS AG consolidated perspective, except for Net activity related to group internal capital transactions and dividends
[8]	Upon adoption of IFRS 9 on 1 January 2018, cash flows from certain financial assets previously classified as available-for-sale assets have been reclassified from investing to operating activities as the assets are accounted for at fair value through profit or loss effective 1 January 2018. Refer to Note 1c of the Annual Report 2018 for more information
[9]	Includes cash proceeds from the sale of the majority stake in Fondcenter AG of USD 426 million. Also includes dividends received from associates.
[10]	Represents funding from UBS Group AG to UBS AG.
[11]	Comprises balances with an original maturity of three months or less. USD 3,192 million of cash and cash equivalents were restricted.
[12]	Comprises balances with an original maturity of three months or less. USD 5,245 million of cash and cash equivalents were restricted.
[13]	Comprises balances with an original maturity of three months or less. USD 3,828 million of cash and cash equivalents were restricted.
[14]	Money market paper is included in the balance sheet under Financial assets at fair value held for trading, Financial assets measured at fair value through other comprehensive income, Financial assets at fair value not held for trading and Other financial assets measured at amortized cost.

MD&A - Risk management and co_7

MD&A - Risk management and control - Credit Risk (Narrative) (Detail)	12 Months Ended
	Dec. 31, 2020
Disclosure of Credit Risk [Line Items]
Maximum LTV ratio within the standard approval process for any type of mortgage in GWM Region Americas	80.00%
Lowest point of maximum LTV ratio for mortgages in GWM Region Americas	45.00%
Number of days a material payment is past due to classify standard claims as non-performing	90 days
Number of days a material payment is past due to classify a client as in default and standard claims as non-performing	90 days
Number of days a material payment is past due to classify a client as in default and standard claims from certain specified counterparty portfolios as non-performing	180 days
UBS AG
Disclosure of Credit Risk [Line Items]
Maximum LTV ratio within the standard approval process for any type of mortgage in GWM Region Americas	80.00%
Lowest point of maximum LTV ratio for mortgages in GWM Region Americas	45.00%
Number of days a material payment is past due to classify standard claims as non-performing	90 days
Number of days a material payment is past due to classify a client as in default and standard claims as non-performing	90 days
Number of days a material payment is past due to classify a client as in default and standard claims from certain specified counterparty portfolios as non-performing	180 days

MD&A - Risk management and co_8

MD&A - Risk management and control - Credit Risk (Detail)	12 Months Ended
MD&A - Risk management and control - Credit Risk (Detail)	Dec. 31, 2020
Disclosure of Credit Risk [Line Items]
Internal UBS rating scale and mapping of external ratings [text block]	Internal UBS rating scale and mapping of external ratings Internal UBS rating 1-year PD range in % Description Moody’s Investors Service mapping Standard & Poor’s mapping Fitch mapping 0 and 1 0.00–0.02 Investment grade Aaa AAA AAA 2 0.02–0.05 Aa1 to Aa3 AA+ to AA– AA+ to AA– 3 0.05–0.12 A1 to A3 A+ to A– A+ to A– 4 0.12–0.25 Baa1 to Baa2 BBB+ to BBB BBB+ to BBB 5 0.25–0.50 Baa3 BBB– BBB– 6 0.50–0.80 Sub-investment grade Ba1 BB+ BB+ 7 0.80–1.30 Ba2 BB BB 8 1.30–2.10 Ba3 BB– BB– 9 2.10–3.50 B1 B+ B+ 10 3.50–6.00 B2 B B 11 6.00–10.00 B3 B– B– 12 10.00–17.00 Caa 13 >17 Ca to C CCC to C CCC to C Counterparty is in default Default Defaulted D D
UBS AG
Disclosure of Credit Risk [Line Items]
Internal UBS rating scale and mapping of external ratings [text block]	Internal UBS rating scale and mapping of external ratings Internal UBS rating 1-year PD range in % Description Moody’s Investors Service mapping Standard & Poor’s mapping Fitch mapping 0 and 1 0.00–0.02 Investment grade Aaa AAA AAA 2 0.02–0.05 Aa1 to Aa3 AA+ to AA– AA+ to AA– 3 0.05–0.12 A1 to A3 A+ to A– A+ to A– 4 0.12–0.25 Baa1 to Baa2 BBB+ to BBB BBB+ to BBB 5 0.25–0.50 Baa3 BBB– BBB– 6 0.50–0.80 Sub-investment grade Ba1 BB+ BB+ 7 0.80–1.30 Ba2 BB BB 8 1.30–2.10 Ba3 BB– BB– 9 2.10–3.50 B1 B+ B+ 10 3.50–6.00 B2 B B 11 6.00–10.00 B3 B– B– 12 10.00–17.00 Caa 13 >17 Ca to C CCC to C CCC to C Counterparty is in default Default Defaulted D D

MD&A - Risk management and co_9

MD&A - Risk management and control - Market Risk (Narrative) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)
Disclosure of Market Risk [Line Items]
Equity instruments held as financial assets at fair value not held for trading and as investments in associates	$ 3,100
Equity instruments held as financial assets at fair value not held for trading	$ 1,500
Holding period used to calculate VaR for internal management purpose	1 day
Confidence level applied for calculating VaR for internal management purpose	95.00%
Holding period used to calculate regulatory VaR	10 days
Confidence level applied for calculating regulatory VaR	99.00%
Risk factor returns used to calculate VaR with 10-day holding period	10 days
Holding period used to calculate stressed VaR (SVAR)	10 days
Confidence level applied for calculating SVaR	99.00%
Historical data set used to calculate regulatory VaR	5 years
Historical data set used to calculate SVaR	from 1 January 2007 to the present
Regulatory threshold for eligible tier 1 capital	15.00%
Regulatory threshold for outlier test of additional tier 1 capital	15.00%
+1 bp
Disclosure of Market Risk [Line Items]
Total effect of economic value of equity for equity, goodwill and real estate	$ (22.2)
Parallel up
Disclosure of Market Risk [Line Items]
Increase (decrease) additional tier 1 (AT1) capital instruments, immediate effect	$ (700)
Percentage change in additional tier 1 (AT1) capital instruments	(10.00%)
Percentage change in additional tier 1 (AT1) capital instruments, immediate effect	(1.20%)
CHF \| +1 bp
Disclosure of Market Risk [Line Items]
Total effect of economic value of equity for equity, goodwill and real estate	$ (5.6)
USD \| +1 bp
Disclosure of Market Risk [Line Items]
Total effect of economic value of equity for equity, goodwill and real estate	(15.9)
UBS AG
Disclosure of Market Risk [Line Items]
Equity instruments held as financial assets at fair value not held for trading and as investments in associates	3,100
Equity instruments held as financial assets at fair value not held for trading	$ 1,500
Holding period used to calculate VaR for internal management purpose	1 day
Confidence level applied for calculating VaR for internal management purpose	95.00%
Holding period used to calculate regulatory VaR	10 days
Confidence level applied for calculating regulatory VaR	99.00%
Risk factor returns used to calculate VaR with 10-day holding period	10 days
Holding period used to calculate stressed VaR (SVAR)	10 days
Confidence level applied for calculating SVaR	99.00%
Historical data set used to calculate regulatory VaR	5 years
Historical data set used to calculate SVaR	from 1 January 2007 to the present
Regulatory threshold for eligible tier 1 capital	15.00%
Regulatory threshold for outlier test of additional tier 1 capital	15.00%
UBS AG \| +1 bp
Disclosure of Market Risk [Line Items]
Total effect of economic value of equity for equity, goodwill and real estate	$ (22.2)
UBS AG \| Parallel up
Disclosure of Market Risk [Line Items]
Increase (decrease) additional tier 1 (AT1) capital instruments, immediate effect	$ (700)
Percentage change in additional tier 1 (AT1) capital instruments	(10.00%)
Percentage change in additional tier 1 (AT1) capital instruments, immediate effect	(1.20%)
UBS AG \| CHF \| +1 bp
Disclosure of Market Risk [Line Items]
Total effect of economic value of equity for equity, goodwill and real estate	$ (5.6)
UBS AG \| USD \| +1 bp
Disclosure of Market Risk [Line Items]
Total effect of economic value of equity for equity, goodwill and real estate	$ (15.9)

MD&A - Risk management and c_10

MD&A - Risk management and control - Market Risk (Detail 1) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Value At Risk [Line Items]
Management VaR	[1]	$ 11	$ 9
Diversification effect	[1],[2],[3]	(8)	(4)
Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	1	1
Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	10	7
Group Functions
Value At Risk [Line Items]
Management VaR	[1]	6	5
Minimum
Value At Risk [Line Items]
Management VaR	[1]	8	6
Minimum \| Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
Minimum \| Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
Minimum \| Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
Minimum \| Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	7	4
Minimum \| Group Functions
Value At Risk [Line Items]
Management VaR	[1]	4	4
Maximum
Value At Risk [Line Items]
Management VaR	[1]	31	18
Maximum \| Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	2	1
Maximum \| Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
Maximum \| Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
Maximum \| Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	32	17
Maximum \| Group Functions
Value At Risk [Line Items]
Management VaR	[1]	7	8
Average
Value At Risk [Line Items]
Management VaR	[1]	13	11
Diversification effect	[1],[2],[3]	(5)	(5)
Average \| Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	1	1
Average \| Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
Average \| Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
Average \| Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	12	9
Average \| Group Functions
Value At Risk [Line Items]
Management VaR	[1]	5	5
Equity prices
Value At Risk [Line Items]
Management VaR	[1]	6	5
Diversification effect	[1],[2],[3]	0	(1)
Equity prices \| Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
Equity prices \| Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
Equity prices \| Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
Equity prices \| Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	10	6
Equity prices \| Group Functions
Value At Risk [Line Items]
Management VaR	[1]	0	1
Equity prices \| Minimum
Value At Risk [Line Items]
Management VaR	[1]	3	2
Equity prices \| Maximum
Value At Risk [Line Items]
Management VaR	[1]	29	14
Equity prices \| Average
Value At Risk [Line Items]
Management VaR	[1]	10	6
Interest rate risk
Value At Risk [Line Items]
Management VaR	[1]	8	8
Diversification effect	[1],[2],[3]	(4)	(4)
Interest rate risk \| Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	1	1
Interest rate risk \| Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
Interest rate risk \| Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
Interest rate risk \| Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	7	7
Interest rate risk \| Group Functions
Value At Risk [Line Items]
Management VaR	[1]	4	5
Interest rate risk \| Minimum
Value At Risk [Line Items]
Management VaR	[1]	6	6
Interest rate risk \| Maximum
Value At Risk [Line Items]
Management VaR	[1]	11	12
Interest rate risk \| Average
Value At Risk [Line Items]
Management VaR	[1]	8	9
Credit spreads
Value At Risk [Line Items]
Management VaR	[1]	8	5
Diversification effect	[1],[2],[3]	(4)	(2)
Credit spreads \| Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	1	1
Credit spreads \| Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
Credit spreads \| Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
Credit spreads \| Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	6	4
Credit spreads \| Group Functions
Value At Risk [Line Items]
Management VaR	[1]	3	2
Credit spreads \| Minimum
Value At Risk [Line Items]
Management VaR	[1]	5	3
Credit spreads \| Maximum
Value At Risk [Line Items]
Management VaR	[1]	11	8
Credit spreads \| Average
Value At Risk [Line Items]
Management VaR	[1]	7	5
Foreign exchange
Value At Risk [Line Items]
Management VaR	[1]	3	3
Diversification effect	[1],[2],[3]	(1)	(1)
Foreign exchange \| Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
Foreign exchange \| Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
Foreign exchange \| Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
Foreign exchange \| Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	4	3
Foreign exchange \| Group Functions
Value At Risk [Line Items]
Management VaR	[1]	1	1
Foreign exchange \| Minimum
Value At Risk [Line Items]
Management VaR	[1]	2	2
Foreign exchange \| Maximum
Value At Risk [Line Items]
Management VaR	[1]	7	8
Foreign exchange \| Average
Value At Risk [Line Items]
Management VaR	[1]	4	3
Commodities
Value At Risk [Line Items]
Management VaR	[1]	3	3
Diversification effect	[1],[2],[3]	0	0
Commodities \| Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
Commodities \| Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
Commodities \| Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
Commodities \| Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	4	2
Commodities \| Group Functions
Value At Risk [Line Items]
Management VaR	[1]	0	0
Commodities \| Minimum
Value At Risk [Line Items]
Management VaR	[1]	2	1
Commodities \| Maximum
Value At Risk [Line Items]
Management VaR	[1]	6	6
Commodities \| Average
Value At Risk [Line Items]
Management VaR	[1]	4	2
UBS AG
Value At Risk [Line Items]
Management VaR	[1]	11	9
Diversification effect	[1],[2],[3]	(8)	(4)
UBS AG \| Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	1	1
UBS AG \| Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	10	7
UBS AG \| Group Functions
Value At Risk [Line Items]
Management VaR	[1]	6	5
UBS AG \| Minimum
Value At Risk [Line Items]
Management VaR	[1]	8	6
UBS AG \| Minimum \| Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Minimum \| Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Minimum \| Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Minimum \| Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	7	4
UBS AG \| Minimum \| Group Functions
Value At Risk [Line Items]
Management VaR	[1]	4	4
UBS AG \| Maximum
Value At Risk [Line Items]
Management VaR	[1]	31	18
UBS AG \| Maximum \| Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	2	1
UBS AG \| Maximum \| Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Maximum \| Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Maximum \| Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	32	17
UBS AG \| Maximum \| Group Functions
Value At Risk [Line Items]
Management VaR	[1]	7	8
UBS AG \| Average
Value At Risk [Line Items]
Management VaR	[1]	13	11
Diversification effect	[1],[2],[3]	(5)	(5)
UBS AG \| Average \| Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	1	1
UBS AG \| Average \| Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Average \| Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Average \| Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	12	9
UBS AG \| Average \| Group Functions
Value At Risk [Line Items]
Management VaR	[1]	5	5
UBS AG \| Equity prices
Value At Risk [Line Items]
Management VaR	[1]	6	5
Diversification effect	[1],[2],[3]	0	(1)
UBS AG \| Equity prices \| Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Equity prices \| Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Equity prices \| Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Equity prices \| Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	10	6
UBS AG \| Equity prices \| Group Functions
Value At Risk [Line Items]
Management VaR	[1]	0	1
UBS AG \| Equity prices \| Minimum
Value At Risk [Line Items]
Management VaR	[1]	3	2
UBS AG \| Equity prices \| Maximum
Value At Risk [Line Items]
Management VaR	[1]	29	14
UBS AG \| Equity prices \| Average
Value At Risk [Line Items]
Management VaR	[1]	10	6
UBS AG \| Interest rate risk
Value At Risk [Line Items]
Management VaR	[1]	8	8
Diversification effect	[1],[2],[3]	(4)	(4)
UBS AG \| Interest rate risk \| Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	1	1
UBS AG \| Interest rate risk \| Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Interest rate risk \| Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Interest rate risk \| Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	7	7
UBS AG \| Interest rate risk \| Group Functions
Value At Risk [Line Items]
Management VaR	[1]	4	5
UBS AG \| Interest rate risk \| Minimum
Value At Risk [Line Items]
Management VaR	[1]	6	6
UBS AG \| Interest rate risk \| Maximum
Value At Risk [Line Items]
Management VaR	[1]	11	12
UBS AG \| Interest rate risk \| Average
Value At Risk [Line Items]
Management VaR	[1]	8	9
UBS AG \| Credit spreads
Value At Risk [Line Items]
Management VaR	[1]	8	5
Diversification effect	[1],[2],[3]	(4)	(2)
UBS AG \| Credit spreads \| Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	1	1
UBS AG \| Credit spreads \| Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Credit spreads \| Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Credit spreads \| Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	6	4
UBS AG \| Credit spreads \| Group Functions
Value At Risk [Line Items]
Management VaR	[1]	3	2
UBS AG \| Credit spreads \| Minimum
Value At Risk [Line Items]
Management VaR	[1]	5	3
UBS AG \| Credit spreads \| Maximum
Value At Risk [Line Items]
Management VaR	[1]	11	8
UBS AG \| Credit spreads \| Average
Value At Risk [Line Items]
Management VaR	[1]	7	5
UBS AG \| Foreign exchange
Value At Risk [Line Items]
Management VaR	[1]	3	3
Diversification effect	[1],[2],[3]	(1)	(1)
UBS AG \| Foreign exchange \| Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Foreign exchange \| Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Foreign exchange \| Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Foreign exchange \| Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	4	3
UBS AG \| Foreign exchange \| Group Functions
Value At Risk [Line Items]
Management VaR	[1]	1	1
UBS AG \| Foreign exchange \| Minimum
Value At Risk [Line Items]
Management VaR	[1]	2	2
UBS AG \| Foreign exchange \| Maximum
Value At Risk [Line Items]
Management VaR	[1]	7	8
UBS AG \| Foreign exchange \| Average
Value At Risk [Line Items]
Management VaR	[1]	4	3
UBS AG \| Commodities
Value At Risk [Line Items]
Management VaR	[1]	3	3
Diversification effect	[1],[2],[3]	0	0
UBS AG \| Commodities \| Global Wealth Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Commodities \| Personal & Corporate Banking
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Commodities \| Asset Management
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Commodities \| Investment Bank
Value At Risk [Line Items]
Management VaR	[1]	4	2
UBS AG \| Commodities \| Group Functions
Value At Risk [Line Items]
Management VaR	[1]	0	0
UBS AG \| Commodities \| Minimum
Value At Risk [Line Items]
Management VaR	[1]	2	1
UBS AG \| Commodities \| Maximum
Value At Risk [Line Items]
Management VaR	[1]	6	6
UBS AG \| Commodities \| Average
Value At Risk [Line Items]
Management VaR	[1]	$ 4	$ 2

[1]	Statistics at individual levels may not be summed to deduce the corresponding aggregate figures. The minima and maxima for each level may well occur on different days, and likewise, the VaR for each business line or risk type, being driven by the extreme loss tail of the corresponding distribution of simulated profits and losses for that business line or risk type, may well be driven by different days in the historical time series, rendering invalid the simple summation of figures to arrive at the aggregate total
[2]	As the minima and maxima for different business divisions and Group Functions occur on different days, it is not meaningful to calculate a portfolio diversification effect.
[3]	Difference between the sum of the standalone VaR for the business divisions and Group Functions and the VaR for the Group as a whole.

MD&A - Risk management and c_11

MD&A - Risk management and control - Market Risk (Detail 2) $ in Millions	Dec. 31, 2020USD ($)
+1 bp
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	$ (27.2)
Additional tier 1 (AT1) capital instruments	4.2
Total including AT1 capital instruments	(23)
+1 bp \| CHF
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(5.2)
+1 bp \| EUR
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(0.9)
+1 bp \| GBP
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	0.2
+1 bp \| USD
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(20.7)
+1 bp \| Other
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(0.6)
Parallel up
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(5,604.8)	[1]
Additional tier 1 (AT1) capital instruments	815.1	[1]
Total including AT1 capital instruments	(4,789.7)	[1]
Parallel up \| CHF
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(735.8)	[1]
Parallel up \| EUR
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(164.9)	[1]
Parallel up \| GBP
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	48.7	[1]
Parallel up \| USD
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(4,612.8)	[1]
Parallel up \| Other
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(140)	[1]
Parallel down
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	4,956.9	[1]
Additional tier 1 (AT1) capital instruments	(868.4)	[1]
Total including AT1 capital instruments	4,088.5	[1]
Parallel down \| CHF
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	832.3	[1]
Parallel down \| EUR
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	163.2	[1]
Parallel down \| GBP
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(42)	[1]
Parallel down \| USD
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	3,999.8	[1]
Parallel down \| Other
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	3.6	[1]
Steepener
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(849.1)	[2]
Additional tier 1 (AT1) capital instruments	(92.8)	[2]
Total including AT1 capital instruments	(942)	[2]
Steepener \| CHF
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(369.6)	[2]
Steepener \| EUR
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(73.1)	[2]
Steepener \| GBP
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(31.7)	[2]
Steepener \| USD
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(395.5)	[2]
Steepener \| Other
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	20.8	[2]
Flattener
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(394.1)	[3]
Additional tier 1 (AT1) capital instruments	272.8	[3]
Total including AT1 capital instruments	(121.2)	[3]
Flattener \| CHF
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	225.5	[3]
Flattener \| EUR
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	29.9	[3]
Flattener \| GBP
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	40.2	[3]
Flattener \| USD
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(630.5)	[3]
Flattener \| Other
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(59.3)	[3]
Short-term up
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(2,332.7)	[4]
Additional tier 1 (AT1) capital instruments	573.6	[4]
Total including AT1 capital instruments	(1,759.1)	[4]
Short-term up \| CHF
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(74.5)	[4]
Short-term up \| EUR
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(20.4)	[4]
Short-term up \| GBP
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	56.9	[4]
Short-term up \| USD
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(2,188.9)	[4]
Short-term up \| Other
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(105.7)	[4]
Short-term down
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	2,435.2	[5]
Additional tier 1 (AT1) capital instruments	(599)	[5]
Total including AT1 capital instruments	1,836.2	[5]
Short-term down \| CHF
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	79	[5]
Short-term down \| EUR
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(4.7)	[5]
Short-term down \| GBP
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(47.5)	[5]
Short-term down \| USD
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	2,397.9	[5]
Short-term down \| Other
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	10.5	[5]
UBS AG \| +1 bp
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(27.2)
Additional tier 1 (AT1) capital instruments	4.2
Total including AT1 capital instruments	(23)
UBS AG \| +1 bp \| CHF
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(5.2)
UBS AG \| +1 bp \| EUR
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(0.9)
UBS AG \| +1 bp \| GBP
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	0.2
UBS AG \| +1 bp \| USD
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(20.7)
UBS AG \| +1 bp \| Other
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(0.6)
UBS AG \| Parallel up
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(5,604.8)	[1]
Additional tier 1 (AT1) capital instruments	815.1	[1]
Total including AT1 capital instruments	(4,789.7)	[1]
UBS AG \| Parallel up \| CHF
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(735.8)	[1]
UBS AG \| Parallel up \| EUR
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(164.9)	[1]
UBS AG \| Parallel up \| GBP
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	48.7	[1]
UBS AG \| Parallel up \| USD
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(4,612.8)	[1]
UBS AG \| Parallel up \| Other
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(140)	[1]
UBS AG \| Parallel down
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	4,956.9	[1]
Additional tier 1 (AT1) capital instruments	(868.4)	[1]
Total including AT1 capital instruments	4,088.5	[1]
UBS AG \| Parallel down \| CHF
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	832.3	[1]
UBS AG \| Parallel down \| EUR
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	163.2	[1]
UBS AG \| Parallel down \| GBP
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(42)	[1]
UBS AG \| Parallel down \| USD
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	3,999.8	[1]
UBS AG \| Parallel down \| Other
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	3.6	[1]
UBS AG \| Steepener
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(849.1)	[2]
Additional tier 1 (AT1) capital instruments	(92.8)	[2]
Total including AT1 capital instruments	(942)	[2]
UBS AG \| Steepener \| CHF
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(369.6)	[2]
UBS AG \| Steepener \| EUR
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(73.1)	[2]
UBS AG \| Steepener \| GBP
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(31.7)	[2]
UBS AG \| Steepener \| USD
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(395.5)	[2]
UBS AG \| Steepener \| Other
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	20.8	[2]
UBS AG \| Flattener
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(394.1)	[3]
Additional tier 1 (AT1) capital instruments	272.8	[3]
Total including AT1 capital instruments	(121.2)	[3]
UBS AG \| Flattener \| CHF
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	225.5	[3]
UBS AG \| Flattener \| EUR
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	29.9	[3]
UBS AG \| Flattener \| GBP
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	40.2	[3]
UBS AG \| Flattener \| USD
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(630.5)	[3]
UBS AG \| Flattener \| Other
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(59.3)	[3]
UBS AG \| Short-term up
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(2,332.7)	[4]
Additional tier 1 (AT1) capital instruments	573.6	[4]
Total including AT1 capital instruments	(1,759.1)	[4]
UBS AG \| Short-term up \| CHF
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(74.5)	[4]
UBS AG \| Short-term up \| EUR
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(20.4)	[4]
UBS AG \| Short-term up \| GBP
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	56.9	[4]
UBS AG \| Short-term up \| USD
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(2,188.9)	[4]
UBS AG \| Short-term up \| Other
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(105.7)	[4]
UBS AG \| Short-term down
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	2,435.2	[5]
Additional tier 1 (AT1) capital instruments	(599)	[5]
Total including AT1 capital instruments	1,836.2	[5]
UBS AG \| Short-term down \| CHF
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	79	[5]
UBS AG \| Short-term down \| EUR
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(4.7)	[5]
UBS AG \| Short-term down \| GBP
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	(47.5)	[5]
UBS AG \| Short-term down \| USD
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	2,397.9	[5]
UBS AG \| Short-term down \| Other
Interest Rate Sensitivity Of Banking Book [Line Items]
Total effect on economic value of equity as per Pillar 3 requirement	$ 10.5	[5]

[1]	Rates across all tenors move by ±150 bps for Swiss franc, ±200 bps for euro and US dollar and ±250 bps for pound sterling
[2]	Short-term rates decrease and long-term rates increase.
[3]	Short-term rates increase and long-term rates decrease.
[4]	Short-term rates increase more than long-term rates.
[5]	Short-term rates decrease more than long-term rates.

MD&A - Capital management (Narr

MD&A - Capital management (Narrative) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Capital Management [Line Items]
Increase (decrease) in CET1 capital	$ 4,400
Operating profit / (loss) before tax	8,155	$ 5,577	$ 5,991
Increase (decrease) in CET1 capital through foreign currency translation effects	1,200
Increase (decrease) in CET1 capital through deferred tax assets on temporary differences	400
Increase (decrease) in CET1 capital through capital reserve for potential share repurchases	(2,000)
Increase (decrease) in CET1 capital through accruals for proposed dividends	(1,300)
Current tax expense / (benefit)	1,200
Increase (decrease) in CET1 capital through share repurchases under share repurchase program	(400)
Increase (decrease) in CET1 capital through defined benefit plans	(300)
Fully-applied loss-absorbing AT1 capital	16,300
Decrease in AT1 capital through issuance of capital instruments	1,250
Increase in AT1 capital through call of capital instruments	750
TLAC-eligible senior unsecured debt included in gone concern loss-absorbing capacity	37,800
Increase in Gone concern loss-absorbing capacity on a fully applied basis	7,800
Gone concern loss-absorbing capacity on a fully applied basis	45,500
UBS AG
Disclosure Of Capital Management [Line Items]
Operating profit / (loss) before tax	$ 7,699	$ 5,169	$ 5,458

MD&A - Capital management (Deta

MD&A - Capital management (Detail 1) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019		Dec. 31, 2018
Reconciliation Of IFRS Equity To Swiss SRB Common Equity Tier One Capital [Line Items]
Total IFRS equity		$ 59,765	$ 54,675	[1]	$ 53,060
Equity attributable to non-controlling interests		(319)	(174)	[1]
Defined benefit plans, net of tax		(41)	(9)	[1]
Deferred tax assets recognized for tax loss carry-forwards		(5,617)	(6,121)	[1]
Deferred tax assets on temporary differences, excess over threshold		(5)	(235)	[1]
Goodwill, net of tax	[2]	(6,319)	(6,178)	[1]
Intangible assets, net of tax		(296)	(195)	[1]
Compensation-related components (not recognized in net profit)		(1,349)	(1,717)	[1]
Expected losses on advanced internal ratings-based portfolio less provisions		(330)	(495)	[1]
Unrealized (gains) / losses from cash flow hedges, net of tax		(2,321)	(1,260)	[1]
Own credit related to (gains) / losses on financial liabilities measured at fair value that existed at the balance sheet date, net of tax		382	93	[1]
Own credit related to gains / losses on derivative financial instruments that existed at the balance sheet date		(45)	(46)	[1]
Unrealized gains related to debt instruments at fair value through OCI, net of tax		(152)	(32)	[1]
Prudential valuation adjustments		(150)	(104)	[1]
Capital reserve for potential share repurchases		(2,000)
Accruals for proposed dividends to shareholders		(1,314)	(2,628)	[1]
Other		0	(40)	[1]
Total common equity tier 1 capital		39,890	35,535	[1]
Goodwill related to significant investments in financial institutions		413	178
UBS AG
Reconciliation Of IFRS Equity To Swiss SRB Common Equity Tier One Capital [Line Items]
Total IFRS equity		58,073	$ 53,896		$ 52,389
Equity attributable to non-controlling interests		(319)
Defined benefit plans, net of tax		(41)
Deferred tax assets recognized for tax loss carry-forwards		(5,617)
Deferred tax assets on temporary differences, excess over threshold		(126)
Goodwill, net of tax		(6,319)
Intangible assets, net of tax		(296)
Compensation-related components (not recognized in net profit)		0
Expected losses on advanced internal ratings-based portfolio less provisions		(330)
Unrealized (gains) / losses from cash flow hedges, net of tax		(2,321)
Own credit related to (gains) / losses on financial liabilities measured at fair value that existed at the balance sheet date, net of tax		382
Own credit related to gains / losses on derivative financial instruments that existed at the balance sheet date		(45)
Unrealized gains related to debt instruments at fair value through OCI, net of tax		(152)
Prudential valuation adjustments		(150)
Capital reserve for potential share repurchases		0
Accruals for proposed dividends to shareholders		(4,539)
Other		(20)
Total common equity tier 1 capital		$ 38,181

[1]	Refer to the “Accounting and financial reporting” and “Consolidated financial statements” sections of this report for information on the restatement of comparative information, where applicable
[2]	Includes goodwill related to significant investments in financial institutions of USD 413 million as of 31 December 2020 (31 December 2019: USD 178 million) presented on the balance sheet line Investments in associates.

MD&A - Capital management (De_2

MD&A - Capital management (Detail 2) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019		Dec. 31, 2018
Comparison Reconciliation Of IFRS Equity To Swiss SRB Common Equity Tier One Capital [Line Items]
Total IFRS equity		$ 59,765	$ 54,675	[1]	$ 53,060
Equity attributable to non-controlling interests		(319)	(174)	[1]
Defined benefit plans, net of tax		(41)	(9)	[1]
Deferred tax assets recognized for tax loss carry-forwards		(5,617)	(6,121)	[1]
Deferred tax assets on temporary differences, excess over threshold		(5)	(235)	[1]
Goodwill, net of tax	[2]	(6,319)	(6,178)	[1]
Intangible assets, net of tax		(296)	(195)	[1]
Compensation-related components (not recognized in net profit)		(1,349)	(1,717)	[1]
Expected losses on advanced internal ratings-based portfolio less provisions		(330)	(495)	[1]
Unrealized (gains) / losses from cash flow hedges, net of tax		(2,321)	(1,260)	[1]
Own credit related to (gains) / losses on financial liabilities measured at fair value that existed at the balance sheet date, net of tax		382	93	[1]
Own credit related to gains / losses on derivative financial instruments that existed at the balance sheet date		(45)	(46)	[1]
Unrealized gains related to debt instruments at fair value through OCI, net of tax		(152)	(32)	[1]
Prudential valuation adjustments		(150)	(104)	[1]
Accruals for proposed dividends to shareholders		(1,314)	(2,628)	[1]
Capital reserve for potential share repurchases		(2,000)
Other		0	(40)	[1]
Total common equity tier 1 capital		39,890	35,535	[1]
UBS AG
Comparison Reconciliation Of IFRS Equity To Swiss SRB Common Equity Tier One Capital [Line Items]
Total IFRS equity		58,073	$ 53,896		$ 52,389
Equity attributable to non-controlling interests		(319)
Defined benefit plans, net of tax		(41)
Deferred tax assets recognized for tax loss carry-forwards		(5,617)
Deferred tax assets on temporary differences, excess over threshold		(126)
Goodwill, net of tax		(6,319)
Intangible assets, net of tax		(296)
Compensation-related components (not recognized in net profit)		0
Expected losses on advanced internal ratings-based portfolio less provisions		(330)
Unrealized (gains) / losses from cash flow hedges, net of tax		(2,321)
Own credit related to (gains) / losses on financial liabilities measured at fair value that existed at the balance sheet date, net of tax		382
Own credit related to gains / losses on derivative financial instruments that existed at the balance sheet date		(45)
Unrealized gains related to debt instruments at fair value through OCI, net of tax		(152)
Prudential valuation adjustments		(150)
Accruals for proposed dividends to shareholders		(4,539)
Capital reserve for potential share repurchases		0
Other		(20)
Total common equity tier 1 capital		38,181
Differences
Comparison Reconciliation Of IFRS Equity To Swiss SRB Common Equity Tier One Capital [Line Items]
Total IFRS equity		1,691
Equity attributable to non-controlling interests		0
Defined benefit plans, net of tax		0
Deferred tax assets recognized for tax loss carry-forwards		0
Deferred tax assets on temporary differences, excess over threshold		121
Goodwill, net of tax		0
Intangible assets, net of tax		0
Compensation-related components (not recognized in net profit)		(1,349)
Expected losses on advanced internal ratings-based portfolio less provisions		0
Unrealized (gains) / losses from cash flow hedges, net of tax		0
Own credit related to (gains) / losses on financial liabilities measured at fair value that existed at the balance sheet date, net of tax		0
Own credit related to gains / losses on derivative financial instruments that existed at the balance sheet date		0
Unrealized gains related to debt instruments at fair value through OCI, net of tax		0
Prudential valuation adjustments		0
Accruals for proposed dividends to shareholders		3,225
Capital reserve for potential share repurchases		(2,000)
Other		20
Total common equity tier 1 capital		$ 1,709

[1]	Refer to the “Accounting and financial reporting” and “Consolidated financial statements” sections of this report for information on the restatement of comparative information, where applicable
[2]	Includes goodwill related to significant investments in financial institutions of USD 413 million as of 31 December 2020 (31 December 2019: USD 178 million) presented on the balance sheet line Investments in associates.

MD&A - UBS shares (Narrative) (

MD&A - UBS shares (Narrative) (Detail) - SFr / shares	Dec. 31, 2020	Dec. 31, 2019
Disclosure of Shares [Line Items]
Par value of shares	SFr 0.1	SFr 0.1
UBS AG
Disclosure of Shares [Line Items]
Par value of shares	SFr 0.1	SFr 0.1