State Street (STT) 10-K20 Feb 202019 FY Annual reportFinancial data

Company Profile

Cover Page

Cover Page - USD ($) $ in Millions	12 Months Ended
Cover Page - USD ($) $ in Millions	Dec. 31, 2019	Jan. 31, 2020	Jun. 30, 2019
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	001-07511
Entity Registrant Name	STATE STREET CORPORATION
Entity Incorporation, State or Country Code	MA
Entity Tax Identification Number	04-2456637
Entity Address, Address Line One	One Lincoln Street
Entity Address, City or Town	Boston,
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02111
City Area Code	(617)
Local Phone Number	786-3000
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 20,810
Entity Common Stock, Shares Outstanding		354,342,408
Documents Incorporated by Reference	The registrant’s definitive Proxy Statement for the 2020 Annual Meeting of Shareholders to be filed pursuant to Regulation 14A on or before April 29, 2020 (Part III).
Amendment Flag	false
Entity Central Index Key	0000093751
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, $1 par value per share
Trading Symbol	STT
Security Exchange Name	NYSE
Series C Preferred Stock, Depository Share
Entity Information [Line Items]
Title of 12(b) Security	Non-Cumulative Perpetual Preferred Stock, Series C, without par value per share
Trading Symbol	STT.PRC.CL
Security Exchange Name	NYSE
Series D Preferred Stock, Depository Share
Entity Information [Line Items]
Title of 12(b) Security	Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series D, without par value per share
Trading Symbol	STT.PRD
Security Exchange Name	NYSE
Series G Preferred Stock, Depository Share
Entity Information [Line Items]
Title of 12(b) Security	Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series G, without par value per share
Trading Symbol	STT.PRG
Security Exchange Name	NYSE

Consolidated Statement of Incom

Consolidated Statement of Income - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fee revenue:
Servicing fees	$ 5,074	$ 5,421	$ 5,365
Management fees	1,771	1,851	1,616
Foreign exchange trading services	1,111	1,201	1,071
Securities finance	471	543	606
Software and processing fees	720	438	343
Total fee revenue	9,147	9,454	9,001
Net interest income:
Interest income	3,941	3,662	2,908
Interest expense	1,375	991	604
Net interest income	2,566	2,671	2,304
Other income:
Gains (losses) from sales of available-for-sale securities, net	(1)	9	(39)
Other income	44	(3)	0
Total other income	43	6	(39)
Total revenue	11,756	12,131	11,266
Provision for loan losses	10	15	2
Expenses:
Compensation and employee benefits	4,541	4,780	4,394
Information systems and communications	1,465	1,324	1,167
Transaction processing services	983	985	838
Occupancy	470	500	461
Acquisition and restructuring costs	77	24	266
Amortization of other intangible assets	236	226	214
Other	1,262	1,176	929
Total expenses	9,034	9,015	8,269
Income before income tax expense	2,712	3,101	2,995
Income tax expense	470	508	839
Net income	2,242	2,593	2,156
Net income available to common shareholders	$ 2,009	$ 2,404	$ 1,972
Earnings per common share:
Basic (in USD per share)	$ 5.43	$ 6.46	$ 5.26
Diluted (in USD per share)	$ 5.38	$ 6.39	$ 5.19
Average common shares outstanding (in thousands):
Basic (in shares)	369,911	371,983	374,793
Diluted (in shares)	373,666	376,476	380,213
Cash dividends declared (in USD per share)	$ 1.98	$ 1.78	$ 1.60

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 2,242	$ 2,593	$ 2,156
Other comprehensive income (loss), net of related taxes:
Foreign currency translation, net of related taxes	(9)	(67)	900
Net unrealized gains (losses) on available-for-sale securities, net of reclassification adjustment and net of related taxes	545	(302)	367
Net unrealized gains (losses) on available-for-sale securities designated in fair value hedges, net of related taxes	18	24	22
Other-than-temporary impairment on held-to-maturity securities related to factors other than credit, net of related taxes	1	4	3
Net unrealized gains (losses) on cash flow hedges, net of related taxes	25	(33)	(285)
Net unrealized gains (losses) on retirement plans, net of related taxes	(16)	27	24
Other comprehensive income (loss)	564	(347)	1,031
Total comprehensive income	$ 2,806	$ 2,246	$ 3,187

Consolidated Statement of Com_2

Consolidated Statement of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Foreign currency translation, Taxes	$ 2	$ (8)	$ 21
Change in net unrealized gains (losses) on available-for-sale securities, Taxes	212	(134)	272
Change in net unrealized gains (losses) on available-for-sale securities designated in fair value hedges, Taxes	6	9	16
Other-than-temporary impairment on held-to-maturity securities related to factors other than credit, Taxes	1	2	3
Change in net unrealized gains (losses) on cash flow hedges, Taxes	9	(17)	(181)
Change in unrealized gains (losses) on retirement plans, Taxes	$ (8)	$ 8	$ 8

Consolidated Statement of Condi

Consolidated Statement of Condition - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Assets:
Cash and due from banks	$ 3,302	$ 3,212
Interest-bearing deposits with banks	68,965	73,040
Securities purchased under resale agreements	1,487	4,679
Trading account assets	914	860
Investment securities available-for-sale	53,815	45,148
Investment securities held-to-maturity (fair value of $42,157 and $41,351)	41,782	41,914
Loans (less allowance for losses of $74 and $67)	26,235	25,722
Premises and equipment (net of accumulated depreciation of $4,367 and $4,152)	2,282	2,214
Accrued interest and fees receivable	3,231	3,203
Goodwill	7,556	7,446
Other intangible assets	2,030	2,369
Other assets	34,011	34,789
Total assets	245,610	244,596
Deposits:
Non-interest-bearing	34,031	44,804
Interest-bearing - U.S.	77,504	66,235
Interest-bearing - non-U.S.	70,337	69,321
Total deposits	181,872	180,360
Securities sold under repurchase agreements	1,102	1,082
Other short-term borrowings	839	3,092
Accrued expenses and other liabilities	24,857	24,232
Long-term debt	12,509	11,093
Total liabilities	221,179	219,859
Commitments, guarantees and contingencies (Notes 12 and 13)
Shareholders’ equity:
Common stock, $1 par, 750,000,000 shares authorized: 503,879,642 and 503,879,642 shares issued, and 357,389,416 and 379,946,724 shares outstanding	504	504
Surplus	10,132	10,061
Retained earnings	21,918	20,553
Accumulated other comprehensive income (loss)	(876)	(1,356)
Treasury stock, at cost (146,490,226 and 123,932,918 shares)	(10,209)	(8,715)
Total shareholders’ equity	24,431	24,737
Total liabilities and shareholders' equity	245,610	244,596
Series C Preferred Stock
Shareholders’ equity:
Preferred stock, no par: 3,500,000 shares authorized; Series C, 5,000 shares issued and outstanding, Series D, 7,500 shares issued and outstanding, Series E, 7,500 shares issued and outstanding, Series F, 7,500 shares issued and outstanding, Series G, 5,000 shares issued and outstanding, and Series H, 5,000 shares issued and outstanding	491	491
Series D Preferred Stock
Shareholders’ equity:
Preferred stock, no par: 3,500,000 shares authorized; Series C, 5,000 shares issued and outstanding, Series D, 7,500 shares issued and outstanding, Series E, 7,500 shares issued and outstanding, Series F, 7,500 shares issued and outstanding, Series G, 5,000 shares issued and outstanding, and Series H, 5,000 shares issued and outstanding	742	742
Series E Preferred Stock
Shareholders’ equity:
Preferred stock, no par: 3,500,000 shares authorized; Series C, 5,000 shares issued and outstanding, Series D, 7,500 shares issued and outstanding, Series E, 7,500 shares issued and outstanding, Series F, 7,500 shares issued and outstanding, Series G, 5,000 shares issued and outstanding, and Series H, 5,000 shares issued and outstanding	0	728
Series F Preferred Stock
Shareholders’ equity:
Preferred stock, no par: 3,500,000 shares authorized; Series C, 5,000 shares issued and outstanding, Series D, 7,500 shares issued and outstanding, Series E, 7,500 shares issued and outstanding, Series F, 7,500 shares issued and outstanding, Series G, 5,000 shares issued and outstanding, and Series H, 5,000 shares issued and outstanding	742	742
Series G Preferred Stock
Shareholders’ equity:
Preferred stock, no par: 3,500,000 shares authorized; Series C, 5,000 shares issued and outstanding, Series D, 7,500 shares issued and outstanding, Series E, 7,500 shares issued and outstanding, Series F, 7,500 shares issued and outstanding, Series G, 5,000 shares issued and outstanding, and Series H, 5,000 shares issued and outstanding	493	493
Series H Preferred Stock
Shareholders’ equity:
Preferred stock, no par: 3,500,000 shares authorized; Series C, 5,000 shares issued and outstanding, Series D, 7,500 shares issued and outstanding, Series E, 7,500 shares issued and outstanding, Series F, 7,500 shares issued and outstanding, Series G, 5,000 shares issued and outstanding, and Series H, 5,000 shares issued and outstanding	$ 494	$ 494

Consolidated Statement of Con_2

Consolidated Statement of Condition (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Current Assets:
Investment securities held-to-maturity, fair value	$ 42,157	$ 41,351
Loans, allowance for losses	74	67
Premises and equipment, accumulated depreciation	$ 4,367	$ 4,152
Stockholders' Equity:
Preferred stock, no par value (in USD per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	3,500,000	3,500,000
Common stock, par value (in USD per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	750,000,000	750,000,000
Common stock, shares issued (in shares)	503,879,642	503,879,642
Common stock, shares outstanding (in shares)	357,389,416	379,946,724
Treasury stock, shares (in shares)	146,490,226	123,932,918
Series C Preferred Stock
Stockholders' Equity:
Preferred stock, shares issued (in shares)	5,000	5,000
Preferred stock, shares outstanding (in shares)	5,000	5,000
Series D Preferred Stock
Stockholders' Equity:
Preferred stock, shares issued (in shares)	7,500	7,500
Preferred stock, shares outstanding (in shares)	7,500	7,500
Series E Preferred Stock
Stockholders' Equity:
Preferred stock, shares issued (in shares)	7,500	7,500
Preferred stock, shares outstanding (in shares)	7,500	7,500
Series F Preferred Stock
Stockholders' Equity:
Preferred stock, shares issued (in shares)	7,500	7,500
Preferred stock, shares outstanding (in shares)	7,500	7,500
Series G Preferred Stock
Stockholders' Equity:
Preferred stock, shares issued (in shares)	5,000	5,000
Preferred stock, shares outstanding (in shares)	5,000	5,000
Series H Preferred Stock
Stockholders' Equity:
Preferred stock, shares issued (in shares)	5,000	5,000
Preferred stock, shares outstanding (in shares)	5,000	5,000

Consolidated Statement of Chang

Consolidated Statement of Changes In Shareholders' Equity - USD ($) shares in Thousands, $ in Millions	Total	Preferred Stock	Common Stock	Surplus	Retained Earnings		Accumulated Other Comprehensive Income (Loss)		Treasury Stock
Beginning balance at Dec. 31, 2016	$ 21,193	$ 3,196	$ 504	$ 9,782	$ 17,433		$ (2,040)		$ (7,682)
Beginning balance (shares) at Dec. 31, 2016			503,880						121,941
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,156				2,156
Other comprehensive income (loss)	1,031						1,031
Cash dividends declared:
Common stock dividends	(596)				(596)
Preferred stock cash dividend	(182)				(182)
Common stock acquired	(1,450)								$ (1,450)
Common stock acquired (shares)									16,788
Common stock awards exercised	120			16					$ 104
Common stock awards exercised (shares)									(2,503)
Other	(2)			1	(2)				$ (1)
Other (shares)									4
Ending balance at Dec. 31, 2017	22,270	3,196	$ 504	9,799	18,809		(1,009)		$ (9,029)
Ending balance (shares) at Dec. 31, 2017			503,880						136,230
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,593				2,593
Other comprehensive income (loss)	(347)						(347)
Preferred stock issued	494	494
Common stock issued	1,150			586					$ 564
Common stock issued (in shares)									(13,244)
Cash dividends declared:
Common stock dividends	(665)				(665)
Preferred stock cash dividend	(188)				(188)
Common stock acquired	(350)								$ (350)
Common stock acquired (shares)									3,324
Common stock awards exercised	145			44					$ 101
Common stock awards exercised (shares)									(2,389)
Other	(365)			(368)	4				$ (1)
Other (shares)									12
Ending balance at Dec. 31, 2018	24,737	3,690	$ 504	10,061	20,553		(1,356)		$ (8,715)
Ending balance (shares) at Dec. 31, 2018			503,880						123,933
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification of certain tax effects	(84)				84	[1]	(84)	[1]
Net income	2,242				2,242
Other comprehensive income (loss)	564						564
Preferred stock redeemed	(750)	(728)			(22)
Cash dividends declared:
Common stock dividends	(728)				(728)
Preferred stock cash dividend	(210)				(210)
Common stock acquired	(1,600)								$ (1,600)
Common stock acquired (shares)									24,884
Common stock awards exercised	198			95					$ 103
Common stock awards exercised (shares)									(2,295)
Other	(22)			(24)	(1)				$ 3
Other (shares)									(32)
Ending balance at Dec. 31, 2019	$ 24,431	$ 2,962	$ 504	$ 10,132	$ 21,918		$ (876)		$ (10,209)
Ending balance (shares) at Dec. 31, 2019			503,880						146,490

[1]	Represents the reclassification from accumulated other comprehensive income into retained earnings as a result of our adoption of ASU 2018-02 - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income in the first quarter of 2019

Consolidated Statement of Cha_2

Consolidated Statement of Changes In Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (in USD per share)	$ 1.98	$ 1.78	$ 1.60

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Activities:
Net income	$ 2,242	$ 2,593	$ 2,156
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income tax expense (benefit)	(130)	(136)	92
Amortization of other intangible assets	236	226	214
Other non-cash adjustments for depreciation, amortization and accretion, net	1,101	977	871
Losses (gains) related to investment securities, net	1	(6)	39
Change in trading account assets, net	(54)	233	(69)
Change in accrued interest and fees receivable, net	(28)	26	(455)
Change in collateral deposits, net	287	7,326	1,819
Change in unrealized losses (gains) on foreign exchange derivatives, net	2,034	(1,836)	3,267
Change in other assets, net	(713)	(22)	(1,334)
Change in accrued expenses and other liabilities, net	294	394	33
Other, net	420	400	307
Net cash provided by operating activities	5,690	10,175	6,940
Investing Activities:
Net decrease (increase) in interest-bearing deposits with banks	4,075	(5,813)	3,708
Net decrease (increase) in securities purchased under resale agreements	3,192	(1,438)	(1,285)
Proceeds from sales of available-for-sale securities	5,642	26,082	12,439
Proceeds from maturities of available-for-sale securities	20,407	14,645	28,878
Purchases of available-for-sale securities	(38,164)	(31,814)	(34,841)
Proceeds from maturities of held-to-maturity securities	10,390	6,296	4,028
Purchases of held-to-maturity securities	(6,938)	(6,539)	(8,772)
Net (increase) in loans and leases	(519)	(2,461)	(3,511)
Business acquisitions, net of cash acquired	(54)	(2,595)	0
Purchases of equity investments and other long-term assets	(647)	(326)	(233)
Purchases of premises and equipment, net	(730)	(609)	(637)
Proceeds from sale of joint venture investment	0	0	172
Other, net	720	76	102
Net cash (used in) provided by investing activities	(2,626)	(4,496)	48
Financing Activities:
Net (decrease) increase in time deposits	(11,255)	6,673	(15,306)
Net increase (decrease) in all other deposits	12,767	(11,209)	13,040
Net (decrease) increase in other short-term borrowings	(2,233)		(1,999)
Net (decrease) increase in other short-term borrowings		188
Proceeds from issuance of long-term debt, net of issuance costs	1,495	995	747
Payments for long-term debt and obligations under finance leases	(402)	(1,461)	(493)
Payments for redemption of preferred stock	(750)	0	0
Proceeds from issuance of preferred stock, net of issuance costs	0	495	0
Proceeds from issuance of common stock, net of issuance costs	0	1,150	0
Repurchases of common stock	(1,585)	(350)	(1,292)
Excess tax benefit related to stock-based compensation	0	0
Repurchases of common stock for employee tax withholding	(81)	(124)	(126)
Payments for cash dividends	(930)	(828)	(768)
Other, net	0	0	9
Net cash (used in) financing activities	(2,974)	(4,471)	(6,188)
Net increase	90	1,208	800
Cash and due from banks at beginning of period	3,212	2,004	1,204
Cash and due from banks at end of period	3,302	3,212	2,004
Supplemental disclosure:
Interest paid	1,382	981	593
Income taxes paid, net	$ 510	$ 549	$ 345

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Dec. 31, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation The accounting and financial reporting policies of State Street Corporation conform to U.S. GAAP. State Street Corporation, the Parent Company, is a financial holding company headquartered in Boston, Massachusetts. Unless otherwise indicated or unless the context requires otherwise, all references in these notes to consolidated financial statements to “State Street,” “we,” “us,” “our” or similar references mean State Street Corporation and its subsidiaries on a consolidated basis, including our principal banking subsidiary, State Street Bank. We have two lines of business: Investment Servicing provides a suite of related products and services including: custody; product and participant level accounting; daily pricing and administration; master trust and master custody; depotbank services (a fund oversight role created by non-U.S. regulation); record-keeping; cash management; foreign exchange, brokerage and other trading services; securities finance and enhanced custody products; deposit and short-term investment facilities; loans and lease financing; investment manager and alternative investment manager operations outsourcing; performance, risk and compliance analytics; and financial data management to support institutional investors. Our CRD business also falls within our Investment Servicing line of business and includes products and services, such as: portfolio modeling and construction; trade order management; investment risk and compliance; and wealth management solutions. Investment Management , through State Street Global Advisors, provides a broad range of investment management strategies and products for our clients. Our investment management strategies and products span the risk/reward spectrum, including core and enhanced indexing, multi-asset strategies, active quantitative and fundamental active capabilities and alternative investment strategies. Our AUM is currently primarily weighted to indexed strategies. In addition, we provide a breadth of services and solutions, including environmental, social and governance investing, defined benefit and defined contribution and Global Fiduciary Solutions (formerly Outsourced Chief Investment Officer). State Street Global Advisors is also a provider of ETFs, including the SPDR ® ETF brand. While management fees are primarily determined by the values of AUM and the investment strategies employed, management fees reflect other factors as well, including the benchmarks specified in the respective management agreements related to performance fees. Consolidation Our consolidated financial statements include the accounts of the Parent Company and its majority- and wholly-owned and otherwise controlled subsidiaries, including State Street Bank. All material inter-company transactions and balances have been eliminated. Certain previously reported amounts have been reclassified to conform to current-year presentation. We consolidate subsidiaries in which we exercise control. Investments in unconsolidated subsidiaries, recorded in other assets, generally are accounted for under the equity method of accounting if we have the ability to exercise significant influence over the operations of the investee. For investments accounted for under the equity method, our share of income or loss is recorded in software and processing fees in our consolidated statement of income. Investments not meeting the criteria for equity-method treatment are measured at fair value through earnings, except for investments where a fair market value is not readily available, which are accounted for under the cost method of accounting. Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions in the application of certain of our significant accounting policies that may materially affect the reported amounts of assets, liabilities, equity, revenue and expenses. As a result of unanticipated events or circumstances, actual results could differ from those estimates. Foreign Currency Translation The assets and liabilities of our operations with functional currencies other than the U.S. dollar are translated at month-end exchange rates, and revenue and expenses are translated at rates that approximate average monthly exchange rates. Gains or losses from the translation of the net assets of subsidiaries with functional currencies other than the U.S. dollar, net of related taxes, are recorded in AOCI, a component of shareholders’ equity. Cash and Cash Equivalents For purposes of the consolidated statement of cash flows, cash and cash equivalents are defined as cash and due from banks. Interest-Bearing Deposits with Banks Interest-bearing deposits with banks generally consist of highly liquid, short-term investments maintained at the Federal Reserve Bank and other non-U.S. central banks with original maturities at the time of purchase of one month or less. Securities Purchased Under Resale Agreements and Securities Sold Under Repurchase Agreements Securities purchased under resale agreements and sold under repurchase agreements are treated as collateralized financing transactions, and are recorded in our consolidated statement of condition at the amounts at which the securities will be subsequently resold or repurchased, plus accrued interest. Our policy is to take possession or control of securities underlying resale agreements either directly or through agent banks, allowing borrowers the right of collateral substitution and/or short-notice termination. We revalue these securities daily to determine if additional collateral is necessary from the borrower to protect us against credit exposure. We can use these securities as collateral for repurchase agreements. For securities sold under repurchase agreements collateralized by our investment securities portfolio, the dollar value of the securities remains in investment securities in our consolidated statement of condition. Where a master netting agreement exists or both parties are members of a common clearing organization, resale and repurchase agreements with the same counterparty or clearing house and maturity date are recorded on a net basis. Fee and Net Interest Income The majority of fees from investment servicing, investment management, securities finance, trading services and certain types of software and processing fees are recorded in our consolidated statement of income based on the consideration specified in contracts with our customers, and excludes taxes collected from customers subsequently remitted to governmental authorities. We recognize revenue as the services are performed or at a point in time depending on the nature of the services provided. Payments made to third party service providers are generally recognized on a gross basis when we control those services and are deemed to be the principal. Additional information about revenue from contracts with customers is provided in Note 25. Interest income on interest-earning assets and interest expense on interest-bearing liabilities are recorded in our consolidated statement of income as components of NII, and are generally based on the effective yield of the related financial asset or liability. Other Significant Policies The following table identifies our other significant accounting policies and the note and page where a detailed description of each policy can be found: Fair Value Note 2 Page 128 Investment Securities Note 3 Page 135 Loans Note 4 Page 141 Goodwill and Other Intangible Assets Note 5 Page 143 Derivative Financial Instruments Note 10 Page 147 Offsetting Arrangements Note 11 Page 152 Contingencies Note 13 Page 156 Variable Interest Entities Note 14 Page 158 Equity-Based Compensation Note 18 Page 164 Income Taxes Note 22 Page 168 Earnings Per Common Share Note 23 Page 169 Revenue from Contracts with Customers Note 25 Page 172 Recent Accounting Developments Relevant standards that were recently issued but not yet adopted as of December 31, 2019: Standard Description Date of Adoption Effects on the financial statements or other significant matters ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments The standard, and its related amendments, replaces the existing incurred loss impairment guidance and requires immediate recognition of expected credit losses for financial assets carried at amortized cost, including trade and other receivables, loans and commitments, held-to-maturity debt securities and other financial assets, held at the reporting date to be measured based on historical experience, current conditions and reasonable supportable forecasts. The standard also amends existing impairment guidance for available-for-sale securities, and credit losses will be recorded as an allowance versus a write-down of the amortized cost basis of the security and will allow for a reversal of impairment loss when the credit of the issuer improves. The guidance requires a cumulative effect of initial application to be recognized in retained earnings at the date of initial application. January 1, 2020 We have assessed the impact of the standard on our consolidated financial statements. We established a steering committee which provided cross-functional governance over the project plan and key decisions. Key accounting policies were enhanced and we refined the credit loss models, processes and the associated data requirements needed to meet the standard. The majority of our exposures utilize a probability-of-default and loss-given-default methodology to estimate the credit loss reserve. Our senior secured loan portfolio remains a major driver of the allowance for credit loss, along with off-balance sheet commitments. There was no material allowance upon implementation for held-to-maturity exposures given the nature of our portfolio. Our credit loss models were approved for use by our Model Validation Group in 2019. We executed our new processes in parallel with the existing processes during 2019 to ensure that we have an appropriate control environment over the allowance for credit losses upon adoption in 2020. Upon adoption of the new guidance on January 1, 2020, no material adjustment to retained earnings was required. ASU 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment The standard simplifies the subsequent measurement of goodwill by eliminating Step 2 from the goodwill impairment test. The ASU requires an entity to compare the fair value of a reporting unit with its carrying amount and recognize an impairment charge for the amount by which the carrying value exceeds the fair value of the reporting unit. Additionally, an entity should consider income tax effects from any tax deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss. January 1, 2020 We have adopted the new standard as of January 1, 2020 prospectively. There are no material impacts as a result of the adoption. ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement The standard eliminates, amends and adds disclosure requirements for fair value measurements. January 1, 2020 We have elected to early adopt the provisions of the new standard that eliminate or amend disclosures as of December 31, 2018 and our disclosures were modified accordingly. The remaining provisions of the standard that add disclosures have been adopted from January 1, 2020 and applied prospectively. ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement. That Is a Service Contract (a consensus of the Financial Accounting Standards Board Emerging Issues Task Force) This standard addresses accounting for fees paid by a customer for implementation, set-up and other upfront costs incurred in a cloud computing arrangement that is hosted by the vendor, i.e., a service contract. The new guidance aligns treatment for capitalization of implementation costs with guidance on internal-use software. January 1, 2020 We have adopted the new standard prospectively as of January 1, 2020. There are no material impacts as a result of the adoption. Relevant standards that were adopted in 2019: We adopted ASU 2016-02, Leases (Topic 842) and relevant amendments, effective January 1, 2019. The standard represents a change to lease accounting and requires all leases, other than short-term leases, to be reported on the balance sheet through recognition of a right-of-use asset and a corresponding liability for future lease obligations. The standard also requires incremental disclosures for assets, expenses, and cash flows associated with leases, as well as a maturity analysis of lease liabilities. We adopted Topic 842 by applying the transition method whereby comparative periods have not been restated, and no adjustment to retained earnings was required. Upon adoption of the standard, we recognized right-of-use assets of approximately $0.9 billion and lease liabilities of approximately $1.1 billion . This increase largely relates to the present value of future minimum lease payments due under existing operating leases of office space. There were no material changes to the recognition of lease expenses in the Consolidated Statement of Income as a result of the adoption of Topic 842. For adoption, we elected Topic 842’s package of three practical expedients, and (1) did not reassess whether any expired or existing contracts are or contain leases, (2) did not reassess the lease classification for any expired or existing leases, and (3) did not reassess initial direct costs for any existing leases. In addition, we made an accounting policy election not to apply the recognition requirements to short-term leases, and elected the practical expedient to not separate lease and nonlease components of leases. We adopted ASU 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities, effective January 1, 2019. The standard shortens the amortization period for certain purchased callable debt securities to the earliest call date. The standard does not impact debt securities which are held at a discount. The guidance requires a cumulative effect of initial application to be recognized in retained earnings at the beginning of the period of adoption. The impact to beginning retained earnings was not material. We adopted ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, effective January 1, 2019. This standard provides an election to reclassify the stranded tax effects resulting from the enactment of the Tax Cuts and Jobs Act of 2017, from accumulated other comprehensive income to retained earnings. Upon adoption of the standard we reclassified approximately $84 million of stranded tax effects. Change in Accounting Method During the first quarter of 2019, we voluntarily changed our accounting method under the FASB ASC 323, Investments - Equity Method and Joint Ventures , for investments in low income housing tax credit (LIHTC) from the equity method of accounting to the proportional amortization method of accounting. While both methods of accounting are acceptable under U.S. GAAP, we believe the proportional method is preferable because it more fairly represents the economics of LIHTC investments, which are made primarily for the purpose of receiving tax credits and other tax benefits. In addition, this method aligns to the method typically used by the companies within our industry which have similar investments. In addition to the change in the timing of the recognition of income on LIHTC investments, amortization of the LIHTC investments is now recorded fully within the Income tax expense (benefit) line instead of the software and processing fees line on the consolidated statements of operations. As part of our change in accounting, all prior periods were revised to reflect the change. Additional information about the effect of the changes on the financial statement line items for prior periods is provided by Exhibit 99.2 to our Current Report on Form 8-K filed with the SEC on May 2, 2019. Since the change in accounting method was effective in the first quarter of 2019 and the financial results under the equity method of accounting as compared to the proportional amortization method of accounting would not affect future management decisions, we did not undertake the operational effort and cost to maintain separate systems of record for the equity method of accounting to enable a calculation of the impact of the change subsequent to the first quarter of 2019. However, we estimate that software and processing fees and income tax expense (benefit) would have both been lower had we continued to use the equity method, resulting in an immaterial impact to net income and earnings per share.

Fair Value

Fair Value	12 Months Ended
Fair Value	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Fair Value Measurements We carry trading account assets and liabilities, AFS debt securities, certain equity securities and various types of derivative financial instruments, at fair value in our consolidated statement of condition on a recurring basis. Changes in the fair values of these financial assets and liabilities are recorded either as components of our consolidated statement of income or as components of AOCI within shareholders' equity in our consolidated statement of condition. We measure fair value for the above-described financial assets and liabilities in conformity with U.S. GAAP that governs the measurement of the fair value of financial instruments. Management believes that its valuation techniques and underlying assumptions used to measure fair value conform to the provisions of U.S. GAAP. We categorize the financial assets and liabilities that we carry at fair value based on a prescribed three-level valuation hierarchy. The hierarchy gives the highest priority to quoted prices in active markets for identical assets or liabilities (level 1) and the lowest priority to valuation methods using significant unobservable inputs (level 3). If the inputs used to measure a financial asset or liability cross different levels of the hierarchy, categorization is based on the lowest-level input that is significant to the fair-value measurement. Management's assessment of the significance of a particular input to the overall fair-value measurement of a financial asset or liability requires judgment, and considers factors specific to that asset or liability. The three levels of the valuation hierarchy are described below. Level 1. Financial assets and liabilities with values based on unadjusted quoted prices for identical assets or liabilities in an active market. Our level 1 financial assets and liabilities primarily include positions in U.S. government securities and highly liquid U.S. and non-U.S. government fixed-income securities. Our level 1 financial assets also include actively traded exchange- traded equity securities. Level 2. Financial assets and liabilities with values based on quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the asset or liability. Level 2 inputs include the following: • Quoted prices for similar assets or liabilities in active markets; • Quoted prices for identical or similar assets or liabilities in non-active markets; • Pricing models whose inputs are observable for substantially the full term of the asset or liability; and • Pricing models whose inputs are derived principally from, or corroborated by, observable market information through correlation or other means for substantially the full term of the asset or liability. Our level 2 financial assets and liabilities primarily include non-U.S. debt securities carried in trading account assets and various types of fixed-income AFS investment securities, as well as various types of foreign exchange and interest rate derivative instruments. Fair value for our AFS investment securities categorized in level 2 is measured primarily using information obtained from independent third parties. This third-party information is subject to review by management as part of a validation process, which includes obtaining an understanding of the underlying assumptions and the level of market participant information used to support those assumptions. In addition, management compares significant assumptions used by third parties to available market information. Such information may include known trades or, to the extent that trading activity is limited, comparisons to market research information pertaining to credit expectations, execution prices and the timing of cash flows and, where information is available, back- testing. Derivative instruments categorized in level 2 predominantly represent foreign exchange contracts used in our trading activities, for which fair value is measured using discounted cash-flow techniques, with inputs consisting of observable spot and forward points, as well as observable interest rate curves. With respect to derivative instruments, we evaluate the impact on valuation of the credit risk of our counterparties. We consider factors such as the likelihood of default by our counterparties, our current and potential future net exposures and remaining maturities in determining the fair value. Valuation adjustments associated with derivative instruments were not material to those instruments for the years ended December 31, 2019 and 2018 . Level 3. Financial assets and liabilities with values based on prices or valuation techniques that require inputs that are both unobservable in the market and significant to the overall measurement of fair value. These inputs reflect management's judgment about the assumptions that a market participant would use in pricing the financial asset or liability, and are based on the best available information, some of which may be internally developed. The following provides a more detailed discussion of our financial assets and liabilities that we may categorize in level 3 and the related valuation methodology. • The fair value of our investment securities categorized in level 3 is measured using information obtained from third-party sources, typically non-binding broker/dealer quotes, or through the use of internally-developed pricing models. Management has evaluated its methodologies used to measure fair value and has considered the level of observable market information to be insufficient to categorize the securities in level 2. • The fair value of certain foreign exchange contracts, primarily options, is measured using an option-pricing model. Because of a limited number of observable transactions, certain model inputs are not observable, such as implied volatility surface, but are derived from observable market information. Our level 3 financial assets and liabilities are similar in structure and profile to our level 1 and level 2 financial instruments, but they trade in less liquid markets, and the measurement of their fair value is inherently less observable. The following tables present information with respect to our financial assets and liabilities carried at fair value in our consolidated statement of condition on a recurring basis as of the dates indicated: Fair Value Measurements on a Recurring Basis As of December 31, 2019 (In millions) Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) Impact of Netting (1) Total Net Carrying Value in Consolidated Statement of Condition Assets: Trading account assets: U.S. government securities $ 34 $ — $ — $ 34 Non-U.S. government securities 146 173 — 319 Other 21 540 — 561 Total trading account assets 201 713 — 914 Available-for-sale investment securities: U.S. Treasury and federal agencies: Direct obligations 3,487 — — 3,487 Mortgage-backed securities — 17,838 — 17,838 Total U.S. Treasury and federal agencies 3,487 17,838 — 21,325 Asset-backed securities: Student loans — 531 — 531 Credit cards — 89 — 89 Collateralized loan obligations — — 1,820 1,820 Total asset-backed securities — 620 1,820 2,440 Non-U.S. debt securities: Mortgage-backed securities — 1,980 — 1,980 Asset-backed securities — 1,292 887 2,179 Government securities — 12,373 — 12,373 Other (2) — 8,613 45 8,658 Total non-U.S. debt securities — 24,258 932 25,190 State and political subdivisions — 1,783 — 1,783 Collateralized mortgage obligations — 104 — 104 Other U.S. debt securities — 2,973 — 2,973 Total available-for-sale investment securities 3,487 47,576 2,752 53,815 Other assets: Derivative instruments: Foreign exchange contracts — 15,136 4 $ (10,391 ) 4,749 Interest rate contracts — 8 — (4 ) 4 Total derivative instruments — 15,144 4 (10,395 ) 4,753 Other — 504 — — 504 Total assets carried at fair value $ 3,688 $ 63,937 $ 2,756 $ (10,395 ) $ 59,986 Liabilities: Accrued expenses and other liabilities: Trading account liabilities: Other $ 5 $ — $ — $ — $ 5 Derivative instruments: Foreign exchange contracts $ 3 $ 15,144 $ 3 $ (8,918 ) 6,232 Interest rate contracts 6 43 — (4 ) 45 Other derivative contracts — 182 — — 182 Total derivative instruments 9 15,369 3 (8,922 ) 6,459 Total liabilities carried at fair value $ 14 $ 15,369 $ 3 $ (8,922 ) $ 6,464 (1) Represents counterparty netting against level 2 financial assets and liabilities where a legally enforceable master netting agreement exists between us and the counterparty. Netting also reflects asset and liability reductions of $2.31 billion and $0.84 billion , respectively, for cash collateral received from and provided to derivative counterparties. (2) As of December 31, 2019 , the fair value of other non-U.S. debt securities included $5.50 billion of supranational and non-U.S. agency bonds , $1.78 billion of corporate bonds and $0.68 billion of covered bonds. Fair Value Measurements on a Recurring Basis As of December 31, 2018 (In millions) Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) Impact of Netting (1) Total Net Carrying Value in Consolidated Statement of Condition Assets: Trading account assets: U.S. government securities $ 34 $ — $ — $ 34 Non-U.S. government securities 146 179 — 325 Other — 501 — 501 Total trading account assets 180 680 — 860 Available-for-sale investment securities: U.S. Treasury and federal agencies: Direct obligations 1,039 — — 1,039 Mortgage-backed securities — 15,968 — 15,968 Total U.S. Treasury and federal agencies 1,039 15,968 — 17,007 Asset-backed securities: Student loans — 541 — 541 Credit cards — 583 — 583 Collateralized loan obligations — — 593 593 Total asset-backed securities — 1,124 593 1,717 Non-U.S. debt securities: Mortgage-backed securities — 1,682 — 1,682 Asset-backed securities — 943 631 1,574 Government securities — 12,793 — 12,793 Other (2) — 6,544 58 6,602 Total non-U.S. debt securities — 21,962 689 22,651 State and political subdivisions — 1,918 — 1,918 Collateralized mortgage obligations — 195 2 197 Other U.S. debt securities — 1,658 — 1,658 Total available-for-sale investment securities 1,039 42,825 1,284 45,148 Other assets: Derivative instruments: Foreign exchange contracts — 16,382 4 $ (11,210 ) 5,176 Interest rate contracts 13 — — — 13 Total derivative instruments 13 16,382 4 (11,210 ) 5,189 Other — 395 — — 395 Total assets carried at fair value $ 1,232 $ 60,282 $ 1,288 $ (11,210 ) $ 51,592 Liabilities: Accrued expenses and other liabilities: Derivative instruments: Foreign exchange contracts $ — $ 16,518 $ 4 $ (11,564 ) $ 4,958 Interest rate contracts — 71 — — 71 Other derivative contracts — 214 — — 214 Total derivative instruments — 16,803 4 (11,564 ) 5,243 Total liabilities carried at fair value $ — $ 16,803 $ 4 $ (11,564 ) $ 5,243 (1) Represents counterparty netting against level 2 financial assets and liabilities where a legally enforceable master netting agreement exists between us and the counterparty. Netting also reflects asset and liability reductions of $0.99 billion and $1.34 billion , respectively, for cash collateral received from and provided to derivative counterparties. (2) As of December 31, 2018 , the fair value of other non-U.S. debt securities included $3.20 billion of supranational and non-U.S. agency bonds , $1.33 billion of corporate bonds and $1.30 billion of covered bonds. The following tables present activity related to our level 3 financial assets during the years ended December 31, 2019 and 2018 , respectively. Transfers into and out of level 3 are reported as of the beginning of the period presented. During the years ended December 31, 2019 and 2018 , transfers into level 3 were primarily related to collateralized loan obligations, collateralized mortgage obligations and non-U.S. debt securities, for which fair value was measured using information obtained from third party sources, including non-binding broker/dealer quotes. During the years ended December 31, 2019 and 2018 , transfers out of level 3 were mainly related to certain ABS, MBS, municipal bonds and non-U.S. debt securities, for which fair value was measured using prices for which observable market information became available. Fair Value Measurements Using Significant Unobservable Inputs Year Ended December 31, 2019 Fair Value as of Total Realized and Purchases Sales Settlements Transfers into Level 3 Transfers out of Level 3 Fair Value as of December 31, 2019 (1) Change in Unrealized Gains (Losses) Related to Financial Instruments Held as of December 31, 2019 (In millions) Recorded in Revenue (1) Recorded in Other Comprehensive Income (1) Assets: Available-for-sale Investment securities: U.S. Treasury and federal agencies: Mortgage-backed securities $ — $ — $ — $ 123 $ — $ — $ — $ (123 ) $ — Asset-backed securities: Collateralized loan obligations 593 1 — 1,065 — (342 ) 503 — 1,820 Total asset-backed securities 593 1 — 1,065 — (342 ) 503 — 1,820 Non-U.S. debt securities: Asset-backed securities 631 — (9 ) 340 — (36 ) — (39 ) 887 Other 58 — (1 ) — — — — (12 ) 45 Total non-U.S. debt securities 689 — (10 ) 340 — (36 ) — (51 ) 932 State and political subdivisions — — — — — — — — — Collateralized mortgage obligations 2 — — — — (2 ) — — — Total Available-for-sale investment securities 1,284 1 (10 ) 1,528 — (380 ) 503 (174 ) 2,752 Other assets: Derivative instruments: Foreign exchange contracts 4 (15 ) — 16 — (1 ) — — 4 $ (11 ) Total derivative instruments 4 (15 ) — 16 — (1 ) — — 4 (11 ) Total assets carried at fair value $ 1,288 $ (14 ) $ (10 ) $ 1,544 $ — $ (381 ) $ 503 $ (174 ) $ 2,756 $ (11 ) (1) Total realized and unrealized gains (losses) on AFS investment securities are included within gains (losses) related to investment securities, net. Total realized and unrealized gains (losses) on derivative instruments are included within f oreign exchange trading services. Fair Value Measurements Using Significant Unobservable Inputs Year Ended December 31, 2018 Fair Value as of December 31, 2017 Total Realized and Purchases Sales Settlements Transfers Transfers Fair Value as of December 31, 2018 (1) Change in Unrealized Gains (Losses) Related to Financial Instruments Held as of December 31, 2018 (In millions) Recorded (1) Recorded (1) Assets: Available-for-sale Investment securities: Asset-backed securities: Collateralized loan obligations $ 1,358 $ 4 $ (7 ) $ 351 $ (636 ) $ (268 ) $ — $ (209 ) $ 593 Total asset-backed securities 1,358 4 (7 ) 351 (636 ) (268 ) — (209 ) 593 Non-U.S. debt securities: Mortgage-backed securities 119 — — — — — — (119 ) — Asset-backed securities 402 — (14 ) 495 (310 ) (56 ) 114 — 631 Other 204 — (6 ) 13 (59 ) (30 ) — (64 ) 58 Total non-U.S. debt securities 725 — (20 ) 508 (369 ) (86 ) 114 (183 ) 689 State and political subdivisions 43 — — — (37 ) (1 ) — (5 ) — Collateralized mortgage obligations — — — — — (6 ) 8 — 2 Total Available-for-sale investment securities 2,126 4 (27 ) 859 (1,042 ) (361 ) 122 (397 ) 1,284 Other assets: Derivative instruments: Foreign exchange contracts 1 (3 ) — 6 — — — — 4 $ (3 ) Total derivative instruments 1 (3 ) — 6 — — — — 4 (3 ) Total assets carried at fair value $ 2,127 $ 1 $ (27 ) $ 865 $ (1,042 ) $ (361 ) $ 122 $ (397 ) $ 1,288 $ (3 ) (1) Total realized and unrealized gains (losses) on AFS investment securities are included within gains (losses) related to investment securities, net. Total realized and unrealized gains (losses) on derivative instruments are included within foreign exchange trading services. The following table presents quantitative information, as of the dates indicated, about the valuation techniques and significant unobservable inputs used in the valuation of our level 3 financial assets and liabilities measured at fair value on a recurring basis for which we use internally-developed pricing models. The significant unobservable inputs for our level 3 financial assets and liabilities whose fair value is measured using pricing information from non-binding broker/dealer quotes are not included in the table, as the specific inputs applied are not provided by the broker/dealer. Quantitative Information about Level 3 Fair Value Measurements Fair Value Weighted-Average (Dollars in millions) As of December 31, 2019 As of December 31, 2018 Valuation Technique Significant Unobservable Input (1) As of December 31, 2019 As of December 31, 2018 Significant unobservable inputs readily available to State Street: Assets: Derivative Instruments, foreign exchange contracts $ 4 $ 4 Option model Volatility 8.2 % 11.4 % Total $ 4 $ 4 Liabilities: Derivative instruments, foreign exchange contracts $ 3 $ 4 Option model Volatility 7.0 % 11.4 % Total $ 3 $ 4 (1) Significant changes in these unobservable inputs may result in significant changes in fair value measurement of the derivative instrument. Financial Instruments Not Carried at Fair Value Estimates of fair value for financial instruments not carried at fair value on a recurring basis in our consolidated statement of condition are generally subjective in nature, and are determined as of a specific point in time based on the characteristics of the financial instruments and relevant market information. Disclosure of fair value estimates is not required by U.S. GAAP for certain items, such as lease financing, equity- method investments, obligations for pension and other post-retirement plans, premises and equipment, other intangible assets and income-tax assets and liabilities. Accordingly, aggregate fair-value estimates presented do not purport to represent, and should not be considered representative of, our underlying “market” or franchise value. In addition, because of potential differences in methodologies and assumptions used to estimate fair values, our estimates of fair value should not be compared to those of other financial institutions. We use the following methods to estimate the fair values of our financial instruments: • For financial instruments that have quoted market prices, those quoted prices are used to estimate fair value; • For financial instruments that have no defined maturity, have a remaining maturity of 180 days or less, or reprice frequently to a market rate, we assume that the fair value of these instruments approximates their reported value, after taking into consideration any applicable credit risk; and • For financial instruments for which no quoted market prices are available, fair value is estimated using information obtained from independent third parties, or by discounting the expected cash flows using an estimated current market interest rate for the financial instrument. The generally short duration of certain of our assets and liabilities results in a significant number of financial instruments for which fair value equals or closely approximates the amount recorded in our consolidated statement of condition. These financial instruments are reported in the following captions in our consolidated statement of condition: cash and due from banks; interest-bearing deposits with banks; securities purchased under resale agreements; accrued interest and fees receivable; deposits; securities sold under repurchase agreements; and other short-term borrowings. In addition, due to the relatively short duration of certain of our loans, we consider fair value for these loans to approximate their reported value. The fair value of other types of loans, such as senior secured bank loans, commercial real estate loans, purchased receivables and municipal loans is estimated using information obtained from independent third parties or by discounting expected future cash flows using current rates at which similar loans would be made to borrowers with similar credit ratings for the same remaining maturities. Commitments to lend have no reported value because their terms are at prevailing market rates. The following tables present the reported amounts and estimated fair values of the financial assets and liabilities not carried at fair value, as they would be categorized within the fair value hierarchy, as of the dates indicated: Fair Value Hierarchy (In millions) Reported Amount Estimated Fair Value Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) December 31, 2019 Financial Assets: Cash and due from banks $ 3,302 $ 3,302 $ 3,302 $ — $ — Interest-bearing deposits with banks 68,965 68,965 — 68,965 — Securities purchased under resale agreements 1,487 1,487 — 1,487 — Investment securities held-to-maturity 41,782 42,157 10,299 31,682 176 Net loans (1) 26,235 26,292 — 24,432 1,860 Other (2) 7,500 7,500 — 7,500 — Financial Liabilities: Deposits: Non-interest-bearing $ 34,031 $ 34,031 $ — $ 34,031 $ — Interest-bearing - U.S. 77,504 77,504 — 77,504 — Interest-bearing - non-U.S. 70,337 70,337 — 70,337 — Securities sold under repurchase agreements 1,102 1,102 — 1,102 — Other short-term borrowings 839 839 — 839 — Long-term debt 12,509 12,770 — 12,621 149 Other (2) 7,500 7,500 — 7,500 — (1) Includes $9 million of loans classified as held-for-sale that were measured at fair value on a recurring basis as of December 31, 2019 . (2) Represents a portion of underlying client assets related to our enhanced custody business, which clients have allowed us to transfer and re-pledge. Fair Value Hierarchy (In millions) Reported Amount Estimated Fair Value Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) December 31, 2018 Financial Assets: Cash and due from banks $ 3,212 $ 3,212 $ 3,212 $ — $ — Interest-bearing deposits with banks 73,040 73,040 — 73,040 — Securities purchased under resale agreements 4,679 4,679 — 4,679 — Investment securities held-to-maturity 41,914 41,351 14,541 26,688 122 Net loans (excluding leases) (1) 25,722 25,561 — 24,648 913 Other (2) 8,500 8,500 — 8,500 — Financial Liabilities: Deposits: Non-interest-bearing $ 44,804 $ 44,804 $ — $ 44,804 $ — Interest-bearing - U.S. 66,235 66,235 — 66,235 — Interest-bearing - non-U.S. 69,321 69,321 — 69,321 — Securities sold under repurchase agreements 1,082 1,082 — 1,082 — Other short-term borrowings 3,092 3,092 — 3,092 — Long-term debt 11,093 11,048 — 10,865 183 Other (2) 8,500 8,500 — 8,500 — (1) Includes $10 million of loans classified as held-for-sale that were measured at fair value on a recurring basis as of December 31, 2018 . (2) Represents a portion of underlying client assets related to our enhanced custody business, which clients have allowed us to transfer and re-pledge.

Investment Securities

Investment Securities	12 Months Ended
Investment Securities	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities Investment securities held by us are classified as either trading account assets, AFS , HTM or equity securities held at fair value at the time of purchase and reassessed periodically, based on management’s intent. Generally, trading assets are debt and equity securities purchased in connection with our trading activities and, as such, are expected to be sold in the near term. Our trading activities typically involve active and frequent buying and selling with the objective of generating profits on short-term movements. AFS investment securities are those securities that we intend to hold for an indefinite period of time. AFS investment securities include securities utilized as part of our asset and liability management activities that may be sold in response to changes in interest rates, prepayment risk, liquidity needs or other factors. HTM securities are debt securities that management has the intent and the ability to hold to maturity. Trading assets are carried at fair value. Both realized and unrealized gains and losses on trading assets are recorded in foreign exchange trading services revenue in our consolidated statement of income. AFS securities are carried at fair value, and after-tax net unrealized gains and losses are recorded in AOCI. Gains or losses realized on sales of AFS investment securities are computed using the specific identification method and are recorded in gains (losses) related to investment securities, net, in our consolidated statement of income. HTM investment securities are carried at cost, adjusted for amortization of premiums and accretion of discounts. The following table presents the amortized cost, fair value and associated unrealized gains and losses of AFS and HTM investment securities as of the dates indicated: December 31, 2019 December 31, 2018 Amortized Cost Gross Unrealized Fair Value Amortized Cost Gross Unrealized Fair Value (In millions) Gains Losses Gains Losses Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 3,506 $ 9 $ 28 $ 3,487 $ 1,035 $ 4 $ — $ 1,039 Mortgage-backed securities 17,599 264 25 17,838 16,112 37 181 15,968 Total U.S. Treasury and federal agencies 21,105 273 53 21,325 17,147 41 181 17,007 Asset-backed securities: Student loans (1) 532 1 2 531 538 4 1 541 Credit cards 90 — 1 89 609 — 26 583 Collateralized loan obligations 1,822 1 3 1,820 594 1 2 593 Total asset-backed securities 2,444 2 6 2,440 1,741 5 29 1,717 Non-U.S. debt securities: Mortgage-backed securities 1,978 3 1 1,980 1,687 — 5 1,682 Asset-backed securities 2,179 2 2 2,179 1,580 — 6 1,574 Government securities 12,243 131 1 12,373 12,816 22 45 12,793 Other (2) 8,595 73 10 8,658 6,600 18 16 6,602 Total non-U.S. debt securities 24,995 209 14 25,190 22,683 40 72 22,651 State and political subdivisions (3) 1,725 59 1 1,783 1,905 20 7 1,918 Collateralized mortgage obligations 104 — — 104 200 — 3 197 Other U.S. debt securities 2,941 32 — 2,973 1,683 1 26 1,658 Total $ 53,314 $ 575 $ 74 $ 53,815 $ 45,359 $ 107 $ 318 $ 45,148 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 10,311 $ 24 $ 3 $ 10,332 $ 14,794 $ — $ 199 $ 14,595 Mortgage-backed securities 26,297 316 44 26,569 21,647 24 518 21,153 Total U.S. Treasury and federal agencies 36,608 340 47 36,901 36,441 24 717 35,748 Asset-backed securities: Student loans (1) 3,783 10 41 3,752 3,191 35 10 3,216 Credit cards — — — — 193 — — 193 Other — — — — 1 — — 1 Total asset-backed securities 3,783 10 41 3,752 3,385 35 10 3,410 Non-U.S. debt securities: Mortgage-backed securities 366 82 6 442 638 77 9 706 Asset-backed securities — — — — 223 — — 223 Government securities 328 — — 328 358 1 — 359 Other — — — — 46 — — 46 Total non-U.S. debt securities 694 82 6 770 1,265 78 9 1,334 Collateralized mortgage obligations 697 38 1 734 823 38 2 859 Total $ 41,782 $ 470 $ 95 $ 42,157 $ 41,914 $ 175 $ 738 $ 41,351 (1) Primarily comprised of securities guaranteed by the federal government with respect to at least 97% of defaulted principal and accrued interest on the underlying loans. (2) As of December 31, 2019 and December 31, 2018 , the fair value of other non-U.S. debt securities included $5.50 billion and $3.20 billion , respectively, primarily of supranational and non-U.S. agency bonds , $1.78 billion and $1.33 billion , respectively, of corporate bonds and $0.68 billion and $1.30 billion , respectively, of covered bonds. (3) As of December 31, 2019 and December 31, 2018 , the fair value of state and political subdivisions includes securities in trusts of $0.94 billion and $1.05 billion respectively. Additional information about these trusts is provided in Note 14 . Aggregate investment securities with carrying values of approximately $49.48 billion and $38.87 billion as of December 31, 2019 and December 31, 2018 , respectively, were designated as pledged for public and trust deposits, short-term borrowings and for other purposes as provided by law. In 2019 , 2018 and 2017, $3.98 billion , $2.13 billion and $496 million , respectively, of agency MBS, previously classified as AFS, were transferred to HTM. These transfers reflect our intent to hold these securities until their maturity. These securities were transferred at fair value, which included a net unrealized loss of $49 million , $53 million and $3 million as of December 31, 2019 , 2018 and 2017, respectively, within accumulated other comprehensive loss which will be accreted into interest income over the remaining life of the transferred security (ranging from approximately 10 to 42 years). In 2018 , $1.2 billion of HTM securities, primarily consisting of MBS and CMBS, were transferred to AFS at book value and sold at a pre-tax loss of approximately $36 million , due to our election to make a one-time transfer of securities relating to the adoption of ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. In 2018 , we sold approximately $26 billion of AFS securities, primarily ABS and municipal bonds, resulting in a pre-tax gain of approximately $9 million . In 2017, we sold $12.2 billion of AFS securities, primarily agency MBS and U.S. treasury securities in our investment portfolio, to position for the then existing interest rate environment resulting in a pre-tax loss of $39 million . The following tables present the aggregate fair values of AFS and HTM investment securities that have been in a continuous unrealized loss position for less than 12 months , and those that have been in a continuous unrealized loss position for 12 months or longer, as of the dates indicated: As of December 31, 2019 Less than 12 months 12 months or longer Total (In millions) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 1,430 $ 28 $ — $ — $ 1,430 $ 28 Mortgage-backed securities 2,499 7 1,665 18 4,164 25 Total U.S. Treasury and federal agencies 3,929 35 1,665 18 5,594 53 Asset-backed securities: Student loans 271 1 127 1 398 2 Credit cards 89 1 — — 89 1 Collateralized loan obligations 862 2 278 1 1,140 3 Total asset-backed securities 1,222 4 405 2 1,627 6 Non-U.S. debt securities: Mortgage-backed securities 228 — 220 1 448 1 Asset-backed securities 672 1 109 1 781 2 Government securities 3,246 1 — — 3,246 1 Other 2,736 9 187 1 2,923 10 Total non-U.S. debt securities 6,882 11 516 3 7,398 14 State and political subdivisions 163 — 22 1 185 1 Collateralized mortgage obligations 13 — 4 — 17 — Other U.S. debt securities 219 — 14 — 233 — Total $ 12,428 $ 50 $ 2,626 $ 24 $ 15,054 $ 74 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 604 $ — $ 2,262 $ 3 $ 2,866 $ 3 Mortgage-backed securities 6,056 31 1,606 13 7,662 44 Total U.S. Treasury and federal agencies 6,660 31 3,868 16 10,528 47 Asset-backed securities: Student loans 2,003 22 778 19 2,781 41 Total asset-backed securities 2,003 22 778 19 2,781 41 Non-U.S. debt securities: Mortgage-backed securities — — 138 6 138 6 Total non-U.S. debt securities — — 138 6 138 6 Collateralized mortgage obligations 13 — 110 1 123 1 Total $ 8,676 $ 53 $ 4,894 $ 42 $ 13,570 $ 95 As of December 31, 2018 Less than 12 months 12 months or longer Total (In millions) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Available-for-sale: U.S. Treasury and federal agencies: Mortgage-backed securities $ 5,058 $ 21 $ 5,089 $ 160 $ 10,147 $ 181 Total U.S. Treasury and federal agencies 5,058 21 5,089 160 10,147 181 Asset-backed securities: Student loans 106 — 218 1 324 1 Credit cards 90 — 493 26 583 26 Collateralized loan obligations 548 2 — — 548 2 Total asset-backed securities 744 2 711 27 1,455 29 Non-U.S. debt securities: Mortgage-backed securities 1,407 4 118 1 1,525 5 Asset-backed securities 1,479 6 — — 1,479 6 Government securities 5,478 45 — — 5,478 45 Other 2,167 12 226 4 2,393 16 Total non-U.S. debt securities 10,531 67 344 5 10,875 72 State and political subdivisions 365 3 244 4 609 7 Collateralized mortgage obligations 181 3 14 — 195 3 Other U.S. debt securities 861 14 484 12 1,345 26 Total $ 17,740 $ 110 $ 6,886 $ 208 $ 24,626 $ 318 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 2,192 $ 45 $ 12,403 $ 154 $ 14,595 $ 199 Mortgage-backed securities 6,502 103 10,648 415 17,150 518 Total U.S. Treasury and federal agencies 8,694 148 23,051 569 31,745 717 Asset-backed securities: Student loans 481 4 536 6 1,017 10 Total asset-backed securities 481 4 536 6 1,017 10 Non-U.S. debt securities: Mortgage-backed securities 184 2 119 7 303 9 Total non-U.S. debt securities 184 2 119 7 303 9 Collateralized mortgage obligations 102 1 51 1 153 2 Total $ 9,461 $ 155 $ 23,757 $ 583 $ 33,218 $ 738 The following table presents the amortized cost and the fair value of contractual maturities of debt investment securities as of December 31, 2019 . The maturities of certain ABS, MBS and collateralized mortgage obligations are based on expected principal payments. Actual maturities may differ from these expected maturities since certain borrowers have the right to prepay obligations with or without prepayment penalties. As of December 31, 2019 (In millions) Under 1 Year 1 to 5 Years 6 to 10 Years Over 10 Years Total Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 1,050 $ 1,058 $ 1,009 $ 1,010 $ 1,448 $ 1,419 $ — $ — $ 3,507 $ 3,487 Mortgage-backed securities 116 118 971 970 2,954 2,951 13,558 13,799 17,599 17,838 Total U.S. Treasury and federal agencies 1,166 1,176 1,980 1,980 4,402 4,370 13,558 13,799 21,106 21,325 Asset-backed securities: Student loans 72 72 185 184 96 96 180 179 533 531 Credit cards — — — — 90 89 — — 90 89 Collateralized loan obligations — — 745 745 959 958 117 117 1,821 1,820 Total asset-backed securities 72 72 930 929 1,145 1,143 297 296 2,444 2,440 Non-U.S. debt securities: Mortgage-backed securities 430 430 568 569 196 196 784 785 1,978 1,980 Asset-backed securities 487 487 981 981 366 366 345 345 2,179 2,179 Government securities 4,183 4,183 7,270 7,381 791 809 — — 12,244 12,373 Other 883 884 6,634 6,689 1,057 1,063 19 22 8,593 8,658 Total non-U.S. debt securities 5,983 5,984 15,453 15,620 2,410 2,434 1,148 1,152 24,994 25,190 State and political subdivisions 236 238 622 635 526 554 341 356 1,725 1,783 Collateralized mortgage obligations — — — — — — 104 104 104 104 Other U.S. debt securities 759 760 2,056 2,083 126 130 — — 2,941 2,973 Total $ 8,216 $ 8,230 $ 21,041 $ 21,247 $ 8,609 $ 8,631 $ 15,448 $ 15,707 $ 53,314 $ 53,815 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 4,116 $ 4,114 $ 6,161 $ 6,185 $ 5 $ 5 $ 29 $ 29 $ 10,311 $ 10,333 Mortgage-backed securities 9 9 438 439 2,515 2,539 23,335 23,581 26,297 26,568 Total U.S. Treasury and federal agencies 4,125 4,123 6,599 6,624 2,520 2,544 23,364 23,610 36,608 36,901 Asset-backed securities: Student loans 96 92 207 206 408 402 3,072 3,051 3,783 3,751 Total asset-backed securities 96 92 207 206 408 402 3,072 3,051 3,783 3,751 Non-U.S. debt securities: Mortgage-backed securities 16 16 33 33 4 4 313 390 366 443 Government securities 328 328 — — — — — — 328 328 Total non-U.S. debt securities 344 344 33 33 4 4 313 390 694 771 Collateralized mortgage obligations 2 3 283 287 13 13 399 431 697 734 Total $ 4,567 $ 4,562 $ 7,122 $ 7,150 $ 2,945 $ 2,963 $ 27,148 $ 27,482 $ 41,782 $ 42,157 The following tables present gross realized gains and losses from sales of AFS investment securities, and the components of net impairment losses included in net gains and losses related to investment securities for the periods indicated: Years Ended December 31, (In millions) 2019 2018 2017 Gross realized gains from sales of AFS investment securities $ 31 $ 205 $ 74 Gross realized losses from sales of AFS investment securities (32 ) (196 ) (113 ) Net impairment losses: Gross losses from OTTI — (3 ) — Net impairment losses — (3 ) — Gains (losses) related to investment securities, net (1 ) 6 (39 ) Net impairment losses, recognized in our consolidated statement of income, were composed of the following: Impairment associated with adverse changes in timing of expected future cash flows — (3 ) — Net impairment losses $ — $ (3 ) $ — The following table presents a roll-forward with respect to net impairment losses that have been recognized in income for the periods indicated: Years Ended December 31, (In millions) 2019 2018 2017 Balance, beginning of period $ 78 $ 77 $ 79 Additions (1) : Other-than-temporary-impairment recognized — 3 — Deductions (2) : Realized losses on securities sold or matured (8 ) (2 ) (2 ) Balance, end of period $ 70 $ 78 $ 77 1) Additions represent securities with a first time credit impairment realized or when a subsequent credit impairment has occurred. (2) Deductions represent impairments on securities that have been sold or matured, are required to be sold, or for which management intends to sell. Interest income related to debt securities is recognized in our consolidated statement of income using the effective interest method, or on a basis approximating a level rate of return over the contractual or estimated life of the security. The level rate of return considers any non-refundable fees or costs, as well as purchase premiums or discounts, adjusted as prepayments occur, resulting in amortization or accretion, accordingly. For certain debt securities acquired which are considered to be beneficial interests in securitized financial assets, the excess of our estimate of undiscounted future cash flows from these securities over their initial recorded investment is accreted into interest income on a level-yield basis over the securities’ estimated remaining terms. Subsequent decreases in these securities’ expected future cash flows are either recognized prospectively through an adjustment of the yields on the securities over their remaining terms, or are evaluated for OTTI. Increases in expected future cash flows are recognized prospectively over the securities’ estimated remaining terms through the recalculation of their yields. Impairment We conduct periodic reviews of individual securities to assess whether OTTI exists. Impairment exists when the current fair value of an individual security is below its amortized cost basis. For AFS and HTM debt securities, impairment is recorded in our consolidated statement of income when management intends to sell (or may be required to sell) the securities before they recover in value, or when management expects the present value of cash flows expected to be collected from the securities to be less than the amortized cost of the impaired security (a credit loss). Our review of impaired securities generally includes: • the identification and evaluation of securities that have indications of potential OTTI, such as issuer-specific concerns, including deteriorating financial condition or bankruptcy; • the analysis of expected future cash flows of securities, based on quantitative and qualitative factors; • the analysis of the collectability of those future cash flows, including information about past events, current conditions, and reasonable and supportable forecasts; • the analysis of the underlying collateral for MBS and ABS; • the analysis of individual impaired securities, including consideration of the length of time the security has been in an unrealized loss position, the anticipated recovery period, and the magnitude of the overall price decline; • evaluation of factors or triggers that could cause individual securities to be deemed OTTI and those that would not support OTTI; and • documentation of the results of these analyses. Factors considered in determining whether impairment is other than temporary include: • certain macroeconomic drivers; • certain industry-specific drivers; • the length of time the security has been impaired; • the severity of the impairment; • the cause of the impairment and the financial condition and near-term prospects of the issuer; • activity in the market with respect to the issuer's securities, which may indicate adverse credit conditions; and • our intention not to sell, and the likelihood that we will not be required to sell, the security for a period of time sufficient to allow for its recovery in value. Substantially all of our investment securities portfolio is composed of debt securities. A critical component of our assessment of OTTI of these debt securities is the identification of credit-impaired securities for which management does not expect to receive cash flows sufficient to recover the entire amortized cost basis of the security. Debt securities that are not deemed to be credit-impaired are subject to additional management analysis to assess whether management intends to sell, or, more likely than not, would be required to sell, the security before the expected recovery of its amortized cost basis. We recorded less than $1 million , $3 million and less than $1 million of OTTI, included in other income, in the years ended December 31, 2019, 2018 and 2017 , respectively, which resulted from adverse changes in the timing of expected future cash flows from non-U.S. mortgage- and asset backed securities. After a review of the investment portfolio, taking into consideration current economic conditions, adverse situations that might affect our ability to fully collect principal and interest, the timing of future payments, the credit quality and performance of the collateral underlying MBS and ABS and other relevant factors, management considers the aggregate decline in fair value of the investment securities portfolio and the resulting gross pre-tax unrealized losses of $169 million related to 622 securities as of December 31, 2019 to be temporary, and not the result of any material changes in the credit characteristics of the securities.

Loans

Loans	12 Months Ended
Loans	Dec. 31, 2019
Receivables [Abstract]
Loans	Loans Loans are generally recorded at their principal amount outstanding, net of the allowance for loan losses, unearned income, and any net unamortized deferred loan origination fees. Acquired loans have been initially recorded at fair value based on management's expectation with respect to future principal and interest collection as of the date of acquisition. Acquired loans are held for investment, and as such their initial fair value is not adjusted subsequent to acquisition. Loans that are classified as held-for-sale are measured at lower of cost or fair value on an individual basis. Interest income related to loans is recognized in our consolidated statement of income using the interest method, or on a basis approximating a level rate of return over the term of the loan. Fees received for providing loan commitments and letters of credit that we anticipate will result in loans typically are deferred and amortized to interest income over the term of the related loan, beginning with the initial borrowing. Fees on commitments and letters of credit are amortized to software and processing fees over the commitment period when funding is not known or expected. The following table presents our recorded investment in loans, by segment, as of the dates indicated: (In millions) December 31, 2019 December 31, 2018 Domestic (1) : Commercial and financial: Loans to investment funds $ 14,546 $ 15,050 Senior secured bank loans 3,342 3,490 Loans to municipalities 848 902 Other 26 37 Commercial real estate 1,766 874 Total domestic 20,528 20,353 Foreign (1) : Commercial and financial: Loans to investment funds 4,662 4,505 Senior secured bank loans 1,119 931 Total foreign 5,781 5,436 Total loans (2) 26,309 25,789 Allowance for loan losses (74 ) (67 ) Loans, net of allowance $ 26,235 $ 25,722 (1) Domestic and foreign categorization is based on the borrower’s country of domicile. (2) Includes $3,256 million and $ 5,444 million of overdrafts as of December 31, 2019 and December 31, 2018 , respectively. We segregate our loans into two segments: commercial and financial loans and commercial real estate loans. We further classify commercial and financial loans as loans to investment funds, senior secured bank loans, loans to municipalities, and other. These classifications reflect their risk characteristics, their initial measurement attributes and the methods we use to monitor and assess credit risk. The commercial and financial segment is composed of primarily floating-rate loans to mutual fund clients, purchased senior secured bank loans, and loans to municipalities. Investment fund lending is composed of revolving credit lines providing liquidity and leverage to mutual fund and private equity fund clients. Certain loans are pledged as collateral for access to the Federal Reserve's discount window. As of December 31, 2019 and December 31, 2018 , the loans pledged as collateral totaled $6.75 billion and $6.51 billion , respectively. The following tables present our recorded investment in each class of loans by credit quality indicator as of the dates indicated: December 31, 2019 Commercial and Financial Commercial Real Estate Total Loans (In millions) Investment grade (1) $ 19,501 $ 1,766 $ 21,267 Speculative (2) 5,008 — 5,008 Special mention (3) 25 — 25 Substandard (4) 9 — 9 Total $ 24,543 $ 1,766 $ 26,309 December 31, 2018 Commercial and Financial Commercial Real Estate Total Loans (In millions) Investment grade (1) $ 19,599 $ 874 $ 20,473 Speculative (2) 5,308 — 5,308 Substandard (4) 8 — 8 Total $ 24,915 $ 874 $ 25,789 (1) Investment grade loans consist of counterparties with strong credit quality and low expected credit risk and probability of default. Ratings apply to counterparties with a strong capacity to support the timely repayment of any financial commitment. (2) Speculative loans consist of counterparties that face ongoing uncertainties or exposure to business, financial, or economic downturns. However, these counterparties may have financial flexibility or access to financial alternatives, which allow for financial commitments to be met. (3) Special mention loans consist of counterparties with potential weaknesses that, if uncorrected, may result in deterioration of repayment prospects. (4) Substandard loans consist of counterparties with well-defined weaknesses that jeopardize repayment with the possibility we will sustain some loss. We use an internal risk-rating system to assess our risk of credit loss for each loan. This risk-rating process incorporates the use of risk-rating tools in conjunction with management judgment. Qualitative and quantitative inputs are captured in a systematic manner, and following a formal review and approval process, an internal credit rating based on our credit scale is assigned. In assessing the risk rating assigned to each individual loan, among the factors considered are the borrower's debt capacity, collateral coverage, payment history and delinquency experience, financial flexibility and earnings strength, the expected amounts and source of repayment, the level and nature of contingencies, if any, and the industry and geography in which the borrower operates. These factors are based on an evaluation of historical and current information, and involve subjective assessment and interpretation. Credit counterparties are evaluated and risk-rated on an individual basis at least annually. Management considers the ratings to be current as of December 31, 2019 . We review loans for indicators of impairment. Loans where indicators exist are evaluated individually for impairment at least quarterly. For those loans where no such indicators are identified, the loans are collectively evaluated for impairment. The following table presents our recorded investment in loans, disaggregated based on our impairment methodology, as of the dates indicated: December 31, 2019 Commercial and Financial Commercial Real Estate Total Loans (In millions) Loans: Individually evaluated for impairment (1) $ 25 $ — $ 25 Collectively evaluated for impairment 24,518 1,766 26,284 Total $ 24,543 $ 1,766 $ 26,309 December 31, 2018 Commercial and Financial Commercial Real Estate Total Loans (In millions) Loans: Individually evaluated for impairment (1) $ 8 $ — $ 8 Collectively evaluated for impairment 24,907 874 25,781 Total $ 24,915 $ 874 $ 25,789 (1) As of December 31, 2019 , we had one loan for $25 million in the commercial and financial segment that was individually evaluated for impairment and deemed to be impaired. We recorded a specific reserve of $1 million on that loan. As of December 31, 2018 , we had one loan for $8 million in the commercial and financial segment that was individually evaluated for impairment and deemed to be impaired. We did not record any reserve on this loan, which was subsequently paid in full in January 2019. In certain circumstances, we restructure troubled loans by granting concessions to borrowers experiencing financial difficulty. Once restructured, the loans are generally considered impaired until their maturity, regardless of whether the borrowers perform under the modified terms of the loans. There were no loans modified in troubled debt restructurings during the years ended December 31, 2019 and 2018 . We generally place loans on non-accrual status once principal or interest payments are 90 days contractually past due, or earlier if management determines that full collection is not probable. Loans 90 days past due, but considered both well-secured and in the process of collection, may be excluded from non-accrual status. When we place a loan on non-accrual status, the accrual of interest is discontinued and previously recorded but unpaid interest is reversed and generally charged against interest income. For loans on non-accrual status, income is recognized on a cash basis after recovery of principal, if and when interest payments are received. Loans may be removed from non-accrual status when repayment is reasonably assured and performance under the terms of the loan has been demonstrated. As of December 31, 2019 and December 31, 2018 , we had no loans on non-accrual status and no loans 30 days or more contractually past due. Allowance For Loan Losses The allowance for loan losses, recorded as a reduction of loans in our consolidated statement of condition, represents management’s estimate of incurred credit losses in our loan portfolio as of the balance sheet date. The allowance is evaluated on a regular basis by management. Factors considered in evaluating the appropriate level of the allowance for each segment of our loan portfolio include loss experience, the probability of default reflected in our internal risk rating of the counterparty's creditworthiness, current economic conditions and adverse situations that may affect the borrower’s ability to repay, the estimated value of the underlying collateral, if any, the performance of individual credits in relation to contract terms, and other relevant factors. Loans are charged off to the allowance for loan losses in the reporting period in which either an event occurs that confirms the existence of a loss on a loan, including a sale of a loan below its carrying value, or a portion of a loan is determined to be uncollectible. In addition, any impaired loan that is determined to be collateral-dependent is reduced to an amount equal to the fair value of the collateral less costs to sell. A loan is identified as collateral-dependent when management determines that it is probable that the underlying collateral will be the sole source of repayment. Recoveries are recorded on a cash basis as adjustments to the allowance. The following table presents activity in the allowance for loan losses for the periods indicated: Years Ended December 31, (In millions) 2019 2018 2017 Allowance for loan losses: Beginning balance $ 67 $ 54 $ 53 Provision for loan losses (1) 10 15 2 Charge-offs (1) (3 ) (2 ) (1 ) Ending balance $ 74 $ 67 $ 54 (1) The provisions and charge-offs for loans were primarily attributable to exposure to senior secured loans to non-investment grade borrowers, purchased in connection with our loans. Loans are reviewed on a regular basis, and any provisions for loan losses that are recorded reflect management's estimate of the amount necessary to maintain the allowance for loan losses at a level considered appropriate to absorb estimated incurred losses in the loan portfolio. Off-Balance Sheet Credit Exposures The reserve for off-balance sheet credit exposures, recorded in accrued expenses and other liabilities in our consolidated statement of condition, represents management’s estimate of probable credit losses primarily in outstanding letters and lines of credit and other credit-enhancement facilities provided to our clients and outstanding as of the balance sheet date. The reserve is evaluated on a regular basis by management. Factors considered in evaluating the appropriate level of this reserve are similar to those considered with respect to the allowance for loan losses. Provisions to maintain the reserve at a level considered by us to be appropriate to absorb estimated incurred credit losses in outstanding facilities are recorded in other expenses in our consolidated statement of income.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
Goodwill and Other Intangible Assets	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill represents the excess of the cost of an acquisition over the fair value of the net tangible and other intangible assets acquired. Other intangible assets represent purchased long-lived intangible assets, primarily client relationships, that can be distinguished from goodwill because of contractual rights or because the asset can be exchanged on its own or in combination with a related contract, asset or liability. Goodwill is not amortized, but is subject to at least annual evaluation for impairment. Other intangible assets, which are also subject to annual evaluation for impairment, are mainly related to client relationships, which are amortized on a straight-line basis over periods ranging from five to twenty years , technology assets, which are amortized on a straight-line basis over periods ranging from three to ten years , and core deposit intangible assets, which are amortized on a straight-line basis over periods ranging from sixteen to twenty-two years , with such amortization recorded in other expenses in our consolidated statement of income. Impairment of goodwill is deemed to exist if the carrying value of a reporting unit, including its allocation of goodwill and other intangible assets, exceeds its estimated fair value. Impairment of other intangible assets is deemed to exist if the balance of the other intangible asset exceeds the cumulative expected net cash inflows related to the asset over its remaining estimated useful life. If these reviews determine that goodwill or other intangible assets are impaired, the value of the goodwill or the other intangible asset is written down through a charge to other expenses in our consolidated statement of income. There were no impairments to goodwill or other intangible assets in 2019 , 2018 and 2017 . The following table presents changes in the carrying amount of goodwill during the periods indicated: (In millions) Investment Servicing (1) Investment Management Total Goodwill: Ending balance December 31, 2017 $ 5,752 $ 270 $ 6,022 Acquisitions (1) 1,512 — 1,512 Foreign currency translation (84 ) (4 ) (88 ) Ending balance December 31, 2018 7,180 266 7,446 Acquisitions (2) 122 — 122 Foreign currency translation (13 ) 1 (12 ) Ending balance December 31, 2019 $ 7,289 $ 267 $ 7,556 (1) Investment Servicing includes our acquisition of CRD. (2) We have completed the purchase price accounting for the CRD acquisition as of March 31, 2019. Upon completion of valuation procedures related to the acquired assets and assumed liabilities, primarily the identifiable intangible assets, we recorded measurement period adjustments in the year ended December 31, 2019 , resulting in an increase in the goodwill of $113 million and a decrease of $93 million in other intangible assets. The following table presents changes in the net carrying amount of other intangible assets during the periods indicated: (In millions) Investment Servicing (1) Investment Management Total Other intangible assets: Ending balance December 31, 2017 $ 1,432 $ 181 $ 1,613 Acquisitions (1) 1,007 — 1,007 Amortization (196 ) (30 ) (226 ) Foreign currency translation (25 ) — (25 ) Ending balance December 31, 2018 $ 2,218 $ 151 $ 2,369 Acquisitions (2) (93 ) — (93 ) Amortization (207 ) (29 ) (236 ) Foreign currency translation (10 ) — (10 ) Ending balance December 31, 2019 $ 1,908 $ 122 $ 2,030 (1) Investment Servicing includes our acquisition of CRD. (2) We have completed the purchase price accounting for the CRD acquisition as of March 31, 2019. Upon completion of valuation procedures related to the acquired assets and assumed liabilities, primarily the identifiable intangible assets, we recorded measurement period adjustments in the year ended December 31, 2019 , resulting in a decrease in the fair value of other intangible assets of $93 million , with a corresponding increase to goodwill. The following table presents the gross carrying amount, accumulated amortization and net carrying amount of other intangible assets by type as of the dates indicated: December 31, 2019 Gross Accumulated Net (In millions) Other intangible assets: Client relationships $ 3,104 $ (1,718 ) $ 1,386 Technology 403 (87 ) 316 Core deposits 673 (381 ) 292 Other 100 (64 ) 36 Total $ 4,280 $ (2,250 ) $ 2,030 December 31, 2018 Gross Accumulated Net (In millions) Other intangible assets: Client relationships $ 3,262 $ (1,605 ) $ 1,657 Technology 389 (49 ) 340 Core deposits 676 (350 ) 326 Other 103 (57 ) 46 Total $ 4,430 $ (2,061 ) $ 2,369 Amortization expense related to other intangible assets was $236 million , $226 million and $214 million in 2019 , 2018 and 2017 , respectively. Expected future amortization expense for other intangible assets recorded as of December 31, 2019 is as follows: (In millions) Future Amortization Years Ended December 31, 2020 $ 240 2021 230 2022 227 2023 226 2024 220

Other Assets

Other Assets	12 Months Ended
Other Assets	Dec. 31, 2019
Other Assets [Abstract]
Other Assets	Other Assets The following table presents the components of other assets as of the dates indicated: (In millions) December 31, 2019 December 31, 2018 Securities borrowed (1) $ 18,524 $ 19,575 Derivative instruments, net 4,753 5,189 Bank-owned life insurance 3,395 3,323 Investments in joint ventures and other unconsolidated entities 2,899 2,882 Collateral, net 874 1,354 Right-of-use assets (2) 858 — Accounts receivable 432 308 Prepaid expenses 395 493 Receivable for securities settlement 336 531 Income taxes receivable 309 129 Deferred tax assets, net of valuation allowance (3) 216 113 Deposits with clearing organizations 58 58 Other 962 834 Total $ 34,011 $ 34,789 (1) Refer to Note 11 , for further information on the impact of collateral on our financial statement presentation of securities borrowing and securities lending transactions. (2) We adopted ASU 2016-02, Leases (Topic 842) and relevant amendments, effective January 1, 2019. Refer to Note 1 for further information on this new accounting standard. (3) Deferred tax assets and liabilities recorded in our consolidated statement of condition are netted within the same tax jurisdiction.

Deposits

Deposits	12 Months Ended
Deposits	Dec. 31, 2019
Banking and Thrift [Abstract]
Deposits	Deposits As of December 31, 2019 , we had $35.15 billion of time deposits outstanding, of which $3.00 billion were wholesale CDs, $32.01 billion were derived from client deposits (payable on demand to such clients) and held in a time deposit established by us as the agent and $139 million were non-U.S. and all of which are scheduled to mature in 2020. As of December 31, 2018 , we had $46.40 billion of time deposits outstanding, of which $4.52 billion were wholesale CDs, $41.57 billion were derived from client deposits (payable on demand to such clients) and held in a time deposit established by us as the agent and $314 million were non-U.S. As of December 31, 2019 and 2018 , all U.S. and non-U.S. time deposits were in amounts of $250,000 or more. Demand deposit overdrafts of $3.26 billion and $5.44 billion were included as loan balances at December 31, 2019 and 2018 , respectively.

Short-Term Borrowings

Short-Term Borrowings	12 Months Ended
Short-Term Borrowings	Dec. 31, 2019
Debt Disclosure [Abstract]
Short-Term Borrowings	Short-Term Borrowings Our short-term borrowings include securities sold under repurchase agreements, short-term borrowings associated with our tax-exempt investment program (more fully described in Note 14 ) and other short-term borrowings. Collectively, short-term borrowings had weighted-average interest rates of 1.64% and 0.88% in 2019 and 2018 , respectively. The following table presents information with respect to the amounts outstanding and weighted-average interest rates of the primary components of our short-term borrowings as of and for the years ended December 31 : (Dollars in millions) Securities Sold Under Repurchase Agreements Tax-Exempt Investment Program Other 2019 2018 2017 2019 2018 2017 2019 2018 2017 Balance as of December 31 $ 1,102 $ 1,082 $ 2,842 $ 823 $ 931 $ 1,078 $ — $ 2,000 $ — Maximum outstanding as of any month-end 4,125 3,441 4,302 931 1,078 1,158 — 2,000 — Average outstanding during the year 1,616 2,048 3,683 898 1,023 1,127 3 nm 1 Weighted-average interest rate as of year-end .00 % 1.38 % .03 % 1.75 % 1.74 % 1.45 % .00 % 2.68 % .00 % Weighted-average interest rate during the year 1.90 .62 .05 1.51 1.46 .79 .01 nm .00 nm Not meaningful Obligations to repurchase securities sold are recorded as a liability in our consolidated statement of condition. U.S. government securities with a fair value of $4.11 billion underlying the repurchase agreements remained in our investment securities portfolio as of December 31, 2019 . The following table presents information about these U.S. government securities and the carrying value of the related repurchase agreements, including accrued interest, as of December 31, 2019 . U.S. Government Securities Sold Repurchase Agreements (1) (In millions) Amortized Cost Fair Value Amortized Cost Overnight maturity $ 3,891 $ 4,112 $ 1,102 (1) Collateralized by investment securities. We maintain an agreement with a clearing organization that enables us to net all securities purchased under resale agreements and sold under repurchase agreements with counterparties that are also members of the clearing organization. As a result of this netting, the average balances of securities purchased under resale agreements and securities sold under repurchase agreements were reduced by $86.67 billion in 2019 compared to $35.74 billion in 2018 . The increase in average balance sheet netting, in 2019 compared to 2018 , is primarily due to the expansion of our FICC program and new client activity. State Street Bank currently maintains a line of credit of CAD 1.40 billion , or approximately $1.08 billion , as of December 31, 2019 , to support its Canadian securities processing operations. The line of credit has no stated termination date and is cancelable by either party with prior notice. As of December 31, 2019 and 2018 , there was no balance outstanding on this line of credit.

Long-Term Debt

Long-Term Debt	12 Months Ended
Long-Term Debt	Dec. 31, 2019
Long-term Debt, Unclassified [Abstract]
Long-Term Debt	Long-Term Debt (Dollars in millions) As of December 31, Issuance Date Maturity Date Coupon Rate Seniority Interest Due Dates 2019 2018 Parent Company And Non-Banking Subsidiary Issuances August 18, 2015 August 18, 2025 3.55 % Senior notes 2/18; 8/18 (1) $ 1,331 $ 1,268 August 18, 2015 August 18, 2020 2.55 % Senior notes 2/18; 8/18 1,191 1,177 November 19, 2013 November 20, 2023 3.7 % Senior notes 5/20; 11/20 (1) 1,037 1,006 December 15, 2014 December 16, 2024 3.3 % Senior notes 6/16; 12/16 (1) 1,022 979 May 15, 2013 May 15, 2023 (2) 3.1 % Subordinated notes 5/15; 11/15 (1) 1,006 972 November 1, 2019 November 1, 2025 2.354 % Fixed-to-floating rate senior notes 5/1; 11/1 991 — May 15, 2017 May 15, 2023 2.653 % Fixed-to-floating rate senior notes 5/15; 11/15 (1) 753 734 March 7, 2011 March 7, 2021 4.375 % Senior notes 3/7; 9/7 (1) 748 731 May 19, 2016 May 19, 2021 1.95 % Senior notes 5/19; 11/19 (1) 744 725 May 19, 2016 May 19, 2026 2.65 % Senior notes 5/19; 11/19 (1) 741 698 December 3, 2018 December 3, 2029 4.141 % Fixed-to-floating rate senior notes 6/3; 12/3 (1) 546 513 December 3, 2018 December 3, 2024 3.776 % Fixed-to-floating rate senior notes 6/3; 12/3 (1) 522 507 August 18, 2015 August 18, 2020 Floating-rate Senior notes 2/18; 5/18; 8/18; 11/18 500 499 April 30, 2007 June 15, 2047 Floating-rate Junior subordinated debentures 3/15; 6/15; 9/15; 12/15 499 794 November 1, 2019 November 1, 2034 3.031 % Fixed-to-floating rate senior subordinated notes 5/1; 11/1 (2) 492 — May 15, 1998 May 15, 2028 Floating-rate Junior subordinated debentures 2/15; 5/15; 8/15; 11/15 100 150 June 21, 1996 June 15, 2026 (3) 7.35 % Senior notes 6/15; 12/15 150 150 Parent Company Long-term finance leases 136 190 Total long-term debt $ 12,509 $ 11,093 (1) We have entered into interest rate swap agreements, recorded as fair value hedges, to modify our interest expense on these senior and subordinated notes from a fixed rate to a floating rate. As of both December 31, 2019 and 2018 , the carrying value of long-term debt associated with these fair value hedges was $157 million . Refer to Note 10 for additional information about fair value hedges. (2) The subordinated notes qualify for inclusion in tier 2 regulatory capital under current federal regulatory capital guidelines. (3) We may not redeem notes prior to their maturity. In the fourth quarter of 2019 , we completed a cash tender offer for approximately $297 million of our $800 million aggregate principal amount of outstanding floating rate junior subordinated debentures due 2047, resulting in a gain of approximately $44 million . Additionally, in the fourth quarter of 2019 , we completed a redemption for approximately $50 million of our $150 million aggregate principal amount of outstanding floating rate junior subordinated debentures due 2028. Termination of Replacement Capital Covenant Prior to November 20, 2019, we were subject to a replacement capital covenant dated April 30, 2007 (the Original RCC), as amended by the amendment to replacement capital covenant dated May 13, 2016 (the RCC Amendment and, together with the Original RCC, the Replacement Capital Covenant). Pursuant to the terms of the Replacement Capital Covenant, neither us nor any of our subsidiaries, including State Street Bank, was permitted to repay, redeem or purchase any of the outstanding floating rate junior subordinated debentures due 2047 prior to June 1, 2047 unless certain conditions had been satisfied, except to the extent that (i) we obtained the prior approval of the Federal Reserve, if such approval was then required, and (ii) we had received proceeds, up to specified percentages of the aggregate principal amount repaid or the applicable redemption or purchase price, from the sale or issuance of qualifying securities with characteristics that are the same as, or more equity-like than, the applicable characteristics of the floating rate junior subordinated debentures due 2047 during the 180 days prior to the date of that repayment, redemption or purchase (which period was to be shortened under certain specified circumstances). The Replacement Capital Covenant was a covenant for the benefit of persons buying, holding or selling specified series of our unsecured long-term indebtedness or our depository institution subsidiaries (the Covered Debt). The original Covered Debt under the Replacement Capital Covenant were the outstanding floating rate junior subordinated debentures due 2028. The Replacement Capital Covenant was terminated automatically without further action on November 20, 2019, following the settlement of the partial redemption of approximately $50 million aggregate principal amount of floating rate junior subordinated debentures due 2028 and the redesignation of our 2.650% Senior Notes due 2026 as Covered Debt for the purposes of the Replacement Capital Covenant, and purchases of the floating rate junior subordinated debentures due 2047 are permissible without issuing qualifying securities under the Replacement Capital Covenant. The Original RCC and the RCC Amendment were included as Exhibit 99.2 and Exhibit 99.3 to our Current Report on Form 8-K, which was filed on November 21, 2019. Parent Company As of December 31, 2019 and 2018 , long-term finance leases included $136 million and $190 million , respectively, related to our One Lincoln Street headquarters building and related underground parking garage. Refer to Note 20 for additional information.

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
Derivative Financial Instruments	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments We use derivative financial instruments to support our clients' needs and to manage our interest rate and currency risks. These financial instruments consist of FX contracts such as forwards, futures and options contracts; interest rate contracts such as interest rate swaps (cross currency and single currency) and futures; and other derivative contracts. Derivative instruments used for risk management purposes that are highly effective in offsetting the risk being hedged are generally designated as hedging instruments in hedge accounting relationships, while others are economic hedges and not designated in hedge accounting relationships. Derivatives in hedge accounting relationships are disclosed according to the type of hedge, such as, fair value, cash flow, or net investment. Derivatives designated as hedging instruments in hedge accounting relationships are carried at fair value with change in fair value recognized in the consolidated statement of income or OCI, as appropriate. Derivatives not designated in hedge accounting relationships include those derivatives entered into to support client needs and derivatives used to manage interest rate or foreign currency risk associated with certain assets and liabilities. Such derivatives are carried at fair value with changes in fair value recognized in the consolidated statement of income. Derivatives Not Designated as Hedging Instruments We provide foreign exchange forward contracts and options in support of our client needs, and also act as a dealer in the currency markets. As part of our trading activities, we assume positions in both the foreign exchange and interest rate markets by buying and selling cash instruments and using derivative financial instruments, including foreign exchange forward contracts, foreign exchange and interest rate options, interest rate forward contracts, and interest rate futures. The entire change in the fair value of our non-hedging derivatives utilized in our trading activities are recorded in foreign exchange trading services revenue, and the entire change in fair value of our non-hedging derivatives utilized in our asset-and-liability management activities are recorded in net interest income. We enter into stable value wrap derivative contracts with unaffiliated stable value funds that allow a stable value fund to provide book value coverage to its participants. These derivatives contracts qualify as guarantees as described in Note 12. We grant deferred cash awards to certain of our employees as part of our employee incentive compensation plans. We account for these awards as derivative financial instruments, as the underlying referenced shares are not equity instruments of ours. The fair value of these derivatives is referenced to the value of units in State Street-sponsored investment funds or funds sponsored by other unrelated entities. We re-measure these derivatives to fair value quarterly, and record the change in value in compensation and employee benefits expenses in our consolidated statement of income. Derivatives Designated as Hedging Instruments In connection with our asset-and-liability management activities, we use derivative financial instruments to manage our interest rate risk and foreign currency risk for certain assets and liabilities. At both the inception of the hedge and on an ongoing basis, we formally assess and document the effectiveness of a derivative designated in a hedging relationship and the likelihood that the derivative will be an effective hedge in future periods. We discontinue hedge accounting prospectively when we determine that the derivative is no longer highly effective in offsetting changes in fair value or cash flows of the underlying risk being hedged, the derivative expires, terminates or is sold, or management discontinues the hedge designation. The risk management objective of a highly effective hedging strategy that qualifies for hedge accounting must be formally documented. The hedge documentation includes the derivative hedging instrument, the asset or liability or forecasted transaction, type of risk being hedged and method for assessing hedge effectiveness of the derivative prospectively and retrospectively. We use quantitative methods including regression analysis and cumulative dollar offset method, comparing the change in the fair value of the derivative to the change in fair value or the cash flows of the hedged item. We may also utilize qualitative methods such as matching critical terms and evaluation of any changes in those critical terms. Effectiveness is assessed and documented quarterly and if determined that the derivative is not highly effective at hedging the designated risk hedge accounting is discontinued. Fair Value Hedges Derivatives designated as fair value hedges are utilized to mitigate the risk of changes in the fair values of recognized assets and liabilities, including long-term debt, AFS securities, and foreign currency investment securities. We use interest rate or FX contracts in this manner to manage our exposure to changes in the fair value of hedged items caused by changes in interest rates or FX rates. Changes in the fair value of the derivative and changes in fair value of the hedged item due to changes in the hedged risk are recognized in earnings in the same line item. If a hedge is terminated, but the hedged item was not derecognized, all remaining adjustments to the carrying amount of the hedged item are amortized over a period that is consistent with the amortization of other discounts or premiums associated with the hedged item . Cash Flow Hedges Derivatives designated as cash flow hedges are utilized to offset the variability of cash flows of recognized assets or liabilities or forecasted transactions. We have entered into FX contracts to hedge the change in cash flows attributable to FX movements in foreign currency denominated investment securities. Additionally, we have entered into interest rate swap agreements to hedge the forecasted cash flows associated with LIBOR indexed floating-rate loans. The interest rate swaps synthetically convert the loan interest receipts from a variable-rate to a fixed-rate, thereby mitigating the risk attributable to changes in the LIBOR benchmark rate. Changes in fair value of the derivatives designated as cash flow hedges are initially recorded in AOCI and then reclassified into earnings in the same period or periods during which the hedged forecasted transaction affects earnings and are presented in the same income statement line item as the earnings effect of the hedged item. If the hedge relationship is terminated, the change in fair value on the derivative recorded in AOCI is reclassified into earnings consistent with the timing of the hedged item. For hedge relationships that are discontinued because a forecasted transaction is not expected to occur according to the original hedge terms, any related derivative values recorded in AOCI are immediately recognized in earnings. As of December 31, 2019 , the maximum maturity date of the underlying loans is approximately 4.7 years . Net Investment Hedges Derivatives categorized as net investment hedges are entered into to protect the net investment in our foreign operations against adverse changes in exchange rates. We use FX forward contracts to convert the foreign currency risk to U.S. dollars to mitigate our exposure to fluctuations in FX rates. The changes in fair value of the FX forward contracts are recorded, net of taxes, in the foreign currency translation component of OCI. The following table presents the aggregate contractual, or notional, amounts of derivative financial instruments including those entered into for trading and asset-and-liability management activities as of the dates indicated: (In millions) December 31, 2019 December 31, 2018 Derivatives not designated as hedging instruments: Interest rate contracts: Futures $ 4,368 $ 2,348 Foreign exchange contracts: Forward, swap and spot 2,378,808 2,238,819 Options purchased 1,581 578 Options written 1,110 576 Futures 1,040 49 Other: Stable value contracts (1) 26,895 26,634 Deferred value awards (2) 389 434 Derivatives designated as hedging instruments: Interest rate contracts: Swap agreements 15,196 10,596 Foreign exchange contracts: Forward and swap 3,176 3,412 (1) The notional value of the stable value contracts represents our maximum exposure. However, exposure to various stable value contracts is generally contractually limited to substantially lower amounts than the notional values. (2) Represents grants of deferred value awards to employees; refer to discussion in this note under "Derivatives Not Designated as Hedging Instruments." Notional amounts are provided here as an indication of the volume of our derivative activity and serve as a reference to calculate the fair values of the derivative. The following tables present the fair value of derivative financial instruments, excluding the impact of master netting agreements, recorded in our consolidated statement of condition as of the dates indicated. The impact of master netting agreements is provided in Note 11 . Derivative Assets (1) Derivative Liabilities (2) (In millions) December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 Derivatives not designated as hedging instruments: Foreign exchange contracts $ 15,140 $ 16,369 $ 15,054 $ 16,434 Other derivative contracts — — 182 214 Total $ 15,140 $ 16,369 $ 15,236 $ 16,648 Derivatives designated as hedging instruments: Foreign exchange contracts $ — $ 17 $ 96 $ 88 Interest rate contracts 8 13 49 71 Total $ 8 $ 30 $ 145 $ 159 (1) Derivative assets are included within other assets in our consolidated statement of condition. (2) Derivative liabilities are included within other liabilities in our consolidated statement of condition. The following tables present the impact of our use of derivative financial instruments on our consolidated statement of income for the periods indicated: Years Ended December 31, 2019 2018 2017 (In millions) Location of Gain (Loss) on Derivative in Consolidated Statement of Income Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Derivatives not designated as hedging instruments: Foreign exchange contracts Foreign exchange trading services revenue $ 630 $ 723 $ 632 Foreign exchange contracts Software and processing fees (1) — — (23 ) Foreign exchange contracts Interest expense (1) (153 ) (41 ) — Interest rate contracts Foreign exchange trading services revenue (3 ) (6 ) 8 Interest rate contracts Software and processing fees (1) — (1 ) — Other derivative contracts Foreign exchange trading services revenue — 5 — Other derivative contracts Compensation and employee benefits (205 ) (171 ) (143 ) Total $ 269 $ 509 $ 474 (1) 2018 includes approximately $15 million of swap costs related to the first quarter of 2018 that were reclassified from software and processing fees to NII. The following table shows the carrying amount and associated cumulative basis adjustments related to the application of hedge accounting that is included in the carrying amount of hedged assets and liabilities in fair value hedging relationships: December 31, 2019 Hedged Items Currently Designated Hedged Items No Longer Designated (1) (In millions) Carrying Amount of Assets and Liabilities (2) Cumulative Hedge Accounting Basis Adjustments Carrying Amount of Assets and Liabilities Cumulative Hedge Accounting Basis Adjustments Long-term debt $ 9,769 $ 164 $ 1,199 $ (8 ) Available-for-sale securities 940 49 — — Total $ 10,709 $ 213 $ 1,199 $ (8 ) December 31, 2018 Hedged Items Currently Designated Hedged Items No Longer Designated (1) (In millions) Carrying Amount of Assets and Liabilities (2) Cumulative Hedge Accounting Basis Adjustments Carrying Amount of Assets and Liabilities Cumulative Hedge Accounting Basis Adjustments Long-term debt $ 8,270 $ (137 ) $ 1,197 $ (20 ) Available-for-sale securities 1,496 72 50 1 Total $ 9,766 $ (65 ) $ 1,247 $ (19 ) (1) Represents hedged items no longer designated in qualifying fair value hedging relationships for which an associated basis adjustment exists at the balance sheet date. (2) Does not include the carrying amount of hedged items when only foreign currency risk is the designated hedged risk. The carrying amount excluded for investment securities was zero and $458 million for December 31, 2019 and December 31, 2018 , respectively. As of December 31, 2019 and December 31, 2018 , the total notional amount of the interest rate swaps of fair value hedges was $10.20 billion and $9.30 billion , respectively. The following tables present the impact of our use of derivative financial instruments on our consolidated statement of income for the periods indicated: Years Ended December 31, Years Ended December 31, 2019 2018 2017 2019 2018 2017 (In millions) Location of Gain (Loss) on Derivative in Consolidated Statement of Income Amount of Gain Hedged Item in Fair Value Hedging Relationship Location of Gain (Loss) on Hedged Item in Consolidated Statement of Income Amount of Gain Derivatives designated as fair value hedges: Foreign exchange contracts Software and processing fees $ — $ (74 ) $ 18 Investment securities Software and processing fees $ — $ 74 $ (18 ) Foreign exchange contracts Software and processing fees — (328 ) 626 Foreign exchange deposit Software and processing fees — 328 (626 ) Interest rate contracts Net interest income (4 ) 31 — Available-for-sale securities (1) Net interest income 2 (32 ) — Interest rate contracts Net interest income 266 (58 ) — Long-term debt Net interest income (255 ) 49 — Interest rate contracts Software and processing fees — — 39 — Available-for-sale securities (1) Software and processing fees — — — (37 ) Interest rate contracts Software and processing fees — — (38 ) — Long-term debt Software and processing fees — — — 39 Total $ 262 $ (429 ) $ 645 $ (253 ) $ 419 $ (642 ) (1) In 2019, 2018 and 2017, $18 million , $24 million and $22 million , respectively, of net unrealized gains on AFS investment securities designated in fair value hedges were recognized in OCI. Years Ended December 31, Years Ended December 31, 2019 2018 2017 Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income 2019 2018 2017 (In millions) Amount of Gain or (Loss) Recognized in Other Comprehensive Income on Derivative Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income Derivatives designated as cash flow hedges: Interest rate contracts $ 8 $ (12 ) $ (14 ) Net interest income $ (10 ) $ (1 ) $ 2 Foreign exchange contracts 43 (12 ) (104 ) Net interest income 27 27 24 Total derivatives designated as cash flow hedges $ 51 $ (24 ) $ (118 ) $ 17 $ 26 $ 26 Derivatives designated as net investment hedges: Foreign exchange contracts $ 30 $ 81 $ (160 ) Gains (Losses) related to investment securities, net $ — $ — $ — Total derivatives designated as net investment hedges 30 81 (160 ) — — — Total $ 81 $ 57 $ (278 ) $ 17 $ 26 $ 26 Derivatives Netting and Credit Contingencies Netting Derivatives receivable and payable as well as cash collateral from the same counterparty are netted in the consolidated statement of condition for those counterparties with whom we have legally binding master netting agreements in place. In addition to cash collateral received and transferred presented on a net basis, we also receive and transfer collateral in the form of securities, which mitigate credit risk but are not eligible for netting. Additional information on netting is provided in Note 11 . Credit Contingencies Certain of our derivatives are subject to master netting agreements with our derivative counterparties containing credit risk-related contingent features, which requires us to maintain an investment grade credit rating with the various credit rating agencies. If our rating falls below investment grade, we would be in violation of the provisions, and counterparties to the derivatives could request immediate payment or demand full overnight collateralization on derivatives instruments in net liability positions. The aggregate fair value of all derivatives with credit contingent features and in a liability position as of December 31, 2019 totaled approximately $2.03 billion , against which we provided $0.71 billion of collateral in the normal course of business. If our credit related contingent features underlying these agreements were triggered as of December 31, 2019 , the maximum additional collateral we would be required to post to our counterparties is approximately $1.32 billion .

Offsetting Arrangements

Offsetting Arrangements	12 Months Ended
Offsetting Arrangements	Dec. 31, 2019
Offsetting [Abstract]
Offsetting Arrangements	Offsetting Arrangements Certain of our transactions are subject to master netting agreements that allow us to net receivables and payables by contract and settlement type. For those legally enforceable contracts, we net receivables and payables with the same counterparty on our statement of condition. In addition to netting receivables and payables with our derivatives counterparty where a legal and enforceable netting arrangement exist, we also net related cash collateral received and transferred up to the fair value exposure amount. With respect to our securities financing arrangements, we net balances outstanding on our consolidated statement of condition for those transactions that met the netting requirements and were transacted under a legally enforceable netting arrangement with the counterparty. Securities received as collateral under securities financing or derivatives transactions can be transferred as collateral in many instances. The securities received as proceeds under secured lending transactions are recorded at a value that approximates fair value in other assets in our consolidated statement of condition with a related liability to return the collateral, if we have the right to transfer or re-pledge the collateral. As of December 31, 2019 and December 31, 2018 , the value of securities received as collateral from third parties where we are permitted to transfer or re-pledge the securities totaled $10.09 billion and $11.69 billion , respectively, and the fair value of the portion that had been transferred or re-pledged as of the same dates was $5.72 billion and $5.31 million , respectively. The following tables present information about the offsetting of assets related to derivative contracts and secured financing transactions, as of the dates indicated: Assets: December 31, 2019 Gross Amounts of Recognized Assets (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Assets Presented in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Cash and Securities Received (4) Net Amount (5) Derivatives: Foreign exchange contracts $ 15,140 $ (8,081 ) $ 7,059 $ — $ 7,059 Interest rate contracts (6) 8 (4 ) 4 — 4 Cash collateral and securities netting NA (2,310 ) (2,310 ) (685 ) (2,995 ) Total derivatives 15,148 (10,395 ) 4,753 (685 ) 4,068 Other financial instruments: Resale agreements and securities borrowing (7)(8) 179,989 (159,978 ) 20,011 (19,572 ) 439 Total derivatives and other financial instruments $ 195,137 $ (170,373 ) $ 24,764 $ (20,257 ) $ 4,507 Assets: December 31, 2018 Gross Amounts of Recognized Assets (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Assets Presented in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Cash and Securities Received (4) Net Amount (5) Derivatives: Foreign exchange contracts $ 16,386 $ (10,223 ) $ 6,163 $ — $ 6,163 Interest rate contracts (6) 13 — 13 — 13 Cash collateral and securities netting NA (987 ) (987 ) (220 ) (1,207 ) Total derivatives 16,399 (11,210 ) 5,189 (220 ) 4,969 Other financial instruments: Resale agreements and securities borrowing (7)(8) 116,143 (91,889 ) 24,254 (22,872 ) 1,382 Total derivatives and other financial instruments $ 132,542 $ (103,099 ) $ 29,443 $ (23,092 ) $ 6,351 (1) Amounts include all transactions regardless of whether or not they are subject to an enforceable netting arrangement. (2) Refer to Note 1 and Note 2 for additional information about the measurement basis of derivative instruments. (3) Amounts subject to netting arrangements which have been determined to be legally enforceable and eligible for netting in the consolidated statement of condition. (4) Includes securities in connection with our securities borrowing transactions. (5) Includes amounts secured by collateral not determined to be subject to enforceable netting arrangements. (6) Variation margin payments presented as settlements rather than collateral. (7) Included in the $20.01 billion as of December 31, 2019 were $1.49 billion of resale agreements and $18.52 billion of collateral provided related to securities borrowing. Included in the $24.25 billion as of December 31, 2018 were $4.68 billion of resale agreements and $19.58 billion of collateral provided related to securities borrowing. Resale agreements and collateral provided related to securities borrowing were recorded in securities purchased under resale agreements and other assets, respectively, in our consolidated statement of condition. Refer to Note 12 for additional information with respect to principal securities finance transactions. (8) Offsetting of resale agreements primarily relates to our involvement in FICC, where we settle transactions on a net basis for payment and delivery through the Fedwire system. NA Not applicable The following tables present information about the offsetting of liabilities related to derivative contracts and secured financing transactions, as of the dates indicated: Liabilities: December 31, 2019 Gross Amounts of Recognized Liabilities (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Liabilities Presented in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Cash and Securities Received (4) Net Amount (5) Derivatives: Foreign exchange contracts $ 15,150 $ (8,081 ) $ 7,069 $ — $ 7,069 Interest rate contracts (6) 49 (4 ) 45 — 45 Other derivative contracts 182 — 182 — 182 Cash collateral and securities netting NA (837 ) (837 ) (557 ) (1,394 ) Total derivatives 15,381 (8,922 ) 6,459 (557 ) 5,902 Other financial instruments: Repurchase agreements and securities lending (7)(8) 171,853 (159,977 ) 11,876 (10,793 ) 1,083 Total derivatives and other financial instruments $ 187,234 $ (168,899 ) $ 18,335 $ (11,350 ) $ 6,985 Liabilities: December 31, 2018 Gross Amounts of Recognized Liabilities (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Liabilities Presented in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Cash and Securities Received (4) Net Amount (5) Derivatives: Foreign exchange contracts $ 16,522 $ (10,223 ) $ 6,299 $ — $ 6,299 Interest rate contracts (6) 71 — 71 — 71 Other derivative contracts 214 — 214 — 214 Cash collateral and securities netting NA (1,341 ) (1,341 ) (215 ) (1,556 ) Total derivatives 16,807 (11,564 ) 5,243 (215 ) 5,028 Other financial instruments: Repurchase agreements and securities lending (7)(8) 104,494 (91,889 ) 12,605 (11,543 ) 1,062 Total derivatives and other financial instruments $ 121,301 $ (103,453 ) $ 17,848 $ (11,758 ) $ 6,090 (1) Amounts include all transactions regardless of whether or not they are subject to an enforceable netting arrangement. (2) Refer to Note 1 and Note 2 for additional information about the measurement basis of derivative instruments. (3) Amounts subject to netting arrangements which have been determined to be legally enforceable and eligible for netting in the consolidated statement of condition. (4) Includes securities provided in connection with our securities lending transactions. (5) Includes amounts secured by collateral not determined to be subject to enforceable netting arrangements. (6) Variation margin payments presented as settlements rather than collateral. (7) Included in the $11.88 billion as of December 31, 2019 were $1.10 billion of repurchase agreements and $10.77 billion of collateral received related to securities lending transactions. Included in the $12.60 billion as of December 31, 2018 were $1.08 billion of repurchase agreements and $11.52 billion of collateral received related to securities lending transactions. Repurchase agreements and collateral received related to securities lending were recorded in securities sold under repurchase agreements and accrued expenses and other liabilit ies, respectively, in our consolidated statement of condition. Refer to Note 12 for additional information with respect to principal securities finance transactions . (8) Offsetting of repurchase agreements primarily relates to our involvement in FICC, where we settle transactions on a net basis for payment and delivery through the Fedwire system. NA Not applicable The securities transferred under resale and repurchase agreements typically are U.S. Treasury, agency and agency MBS. In our principal securities borrowing and lending arrangements, the securities transferred are predominantly equity securities and some corporate debt securities. The fair value of the securities transferred may increase in value to an amount greater than the amount received under our repurchase and securities lending arrangements, which exposes us to counterparty risk. We require the review of the price of the underlying securities in relation to the carrying value of the repurchase agreements and securities lending arrangements on a daily basis and when appropriate, adjust the cash or security to be obtained or returned to counterparties that is reflective of the required collateral levels. The following table summarizes our repurchase agreements and securities lending transactions by category of collateral pledged and remaining maturity of these agreements as of the periods indicated: As of December 31, 2019 As of December 31, 2018 (In millions) Overnight and Continuous Up to 30 Days Greater than 90 Days Total Overnight and Continuous Up to 30 Days Greater than 90 Days Total Repurchase agreements: U.S. Treasury and agency securities $ 156,465 $ — $ — $ 156,465 $ 88,904 $ — $ — $ 88,904 Total 156,465 — — 156,465 88,904 — — 88,904 Securities lending transactions: US Treasury and agency securities 15 — — 15 249 — — 249 Corporate debt securities 354 — — 354 278 — — 278 Equity securities 7,389 — 130 7,519 6,426 137 — 6,563 Other (1) 7,500 — — 7,500 8,500 — — 8,500 Total 15,258 — 130 15,388 15,453 137 — 15,590 Gross amount of recognized liabilities for repurchase agreements and securities lending $ 171,723 $ — $ 130 $ 171,853 $ 104,357 $ 137 $ — $ 104,494 (1) Represents a security interest in underlying client assets related to our enhanced custody business, which assets clients have allowed us to transfer and re-pledge.

Commitments and Guarantees

Commitments and Guarantees	12 Months Ended
Commitments and Guarantees	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Guarantees	and Guarantees The following table presents the aggregate gross contractual amounts of our off-balance sheet commitments and off-balance sheet guarantees as of the dates indicated: (In millions) December 31, 2019 December 31, 2018 Commitments: Unfunded credit facilities $ 29,697 $ 28,951 Guarantees (1) : Indemnified securities financing $ 367,901 $ 342,337 Standby letters of credit 3,324 2,985 (1) The potential losses associated with these guarantees equal the gross contractual amounts and do not consider the value of any collateral or reflect any participations to independent third parties. Unfunded Credit Facilities Unfunded credit facilities consist of liquidity facilities for our fund and municipal lending clients and undrawn lines of credit related to senior secured bank loans. As of December 31, 2019 , approximately 73% of our unfunded commitments to extend credit expire within one year . Since many of these commitments are expected to expire or renew without being drawn upon, the gross contractual amounts do not necessarily represent our future cash requirements. Indemnified Securities Financing On behalf of our clients, we lend their securities, as agent, to brokers and other institutions. In most circumstances, we indemnify our clients for the fair market value of those securities against a failure of the borrower to return such securities. We require the borrowers to maintain collateral in an amount in excess of 100% of the fair market value of the securities borrowed. Securities on loan and the collateral are revalued daily to determine if additional collateral is necessary or if excess collateral is required to be returned to the borrower. Collateral received in connection with our securities lending services is held by us as agent and is not recorded in our consolidated statement of condition. The cash collateral held by us as agent is invested on behalf of our clients. In certain cases, the cash collateral is invested in third-party repurchase agreements, for which we indemnify the client against the loss of the principal invested. We require the counterparty to the indemnified repurchase agreement to provide collateral in an amount in excess of 100% of the amount of the repurchase agreement. In our role as agent, the indemnified repurchase agreements and the related collateral held by us are not recorded in our consolidated statement of condition. The following table summarizes the aggregate fair values of indemnified securities financing and related collateral, as well as collateral invested in indemnified repurchase agreements, as of the dates indicated: (In millions) December 31, 2019 December 31, 2018 Fair value of indemnified securities financing $ 367,901 $ 342,337 Fair value of cash and securities held by us, as agent, as collateral for indemnified securities financing 385,428 357,893 Fair value of collateral for indemnified securities financing invested in indemnified repurchase agreements 45,658 42,610 Fair value of cash and securities held by us or our agents as collateral for investments in indemnified repurchase agreements 48,887 45,064 In certain cases, we participate in securities finance transactions as a principal. As a principal, we borrow securities from the lending client and then lend such securities to the subsequent borrower, either our client or a broker/dealer. Our right to receive and obligation to return collateral in connection with our securities lending transactions are recorded in other assets and other liabilities, respectively, in our consolidated statement of condition. As of December 31, 2019 and December 31, 2018 , we had approximately $18.52 billion and $19.58 billion , respectively, of collateral provided and approximately $10.77 billion and $11.52 billion , respectively, of collateral received from clients in connection with our participation in principal securities finance transactions. Stable Value Protection Stable value funds wrapped by us are high quality diversified portfolios of short intermediate duration fixed-income investments. Stable value contracts are derivative contracts that also qualify as guarantees. The notional amount under non-hedging derivatives, provided in Note 10, generally represents our maximum exposure under these derivatives contracts. However, exposure to various stable value contracts is contractually limited to substantially lower amounts than the notional values, which represent the total assets of the stable value funds. Standby Letters of Credit Standby letters of credit provide credit enhancement to our municipal clients to support the issuance of capital markets financing.

Contingencies

Contingencies	12 Months Ended
Contingencies	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies Legal and Regulatory Matters In the ordinary course of business, we and our subsidiaries are involved in disputes, litigation, and governmental or regulatory inquiries and investigations, both pending and threatened. These matters, if resolved adversely against us or settled, may result in monetary awards or payments, fines and penalties or require changes in our business practices. The resolution or settlement of these matters is inherently difficult to predict. Based on our assessment of these pending matters, we do not believe that the amount of any judgment, settlement or other action arising from any pending matter is likely to have a material adverse effect on our consolidated financial condition. However, an adverse outcome or development in certain of the matters described below could have a material adverse effect on our consolidated results of operations for the period in which such matter is resolved, or an accrual is determined to be required, on our consolidated financial condition, or on our reputation. We evaluate our needs for accruals of loss contingencies related to legal and regulatory proceedings on a case-by-case basis. When we have a liability that we deem probable, and we deem the amount of such liability can be reasonably estimated as of the date of our consolidated financial statements, we accrue our estimate of the amount of loss. We also consider a loss probable and establish an accrual when we make, or intend to make, an offer of settlement. Once established, an accrual is subject to subsequent adjustment as a result of additional information. The resolution of legal and regulatory proceedings and the amount of reasonably estimable loss (or range thereof) are inherently difficult to predict, especially in the early stages of proceedings. Even if a loss is probable, an amount (or range) of loss might not be reasonably estimated until the later stages of the proceeding due to many factors such as the presence of complex or novel legal theories, the discretion of governmental authorities in seeking sanctions or negotiating resolutions in civil and criminal matters, the pace and timing of discovery and other assessments of facts and the procedural posture of the matter (collectively, "factors influencing reasonable estimates"). As of December 31, 2019 , our aggregate accruals for loss contingencies for legal, regulatory and related matters totaled approximately $146 million , including potential fines by government agencies and civil litigation with respect to the matters specifically discussed below. To the extent that we have established accruals in our consolidated statement of condition for probable loss contingencies, such accruals may not be sufficient to cover our ultimate financial exposure associated with any settlements or judgments. Any such ultimate financial exposure, or proceedings to which we may become subject in the future, could have a material adverse effect on our businesses, on our future consolidated financial statements or on our reputation. As of December 31, 2019 , for those matters for which we have accrued probable loss contingencies (including the Invoicing Matter described below) and for other matters for which loss is reasonably possible (but not probable) in future periods, and for which we are able to estimate a range of reasonably possible loss, our estimate of the aggregate reasonably possible loss (in excess of any accrued amounts) ranges up to approximately $50 million . Our estimate with respect to the aggregate reasonably possible loss is based upon currently available information and is subject to significant judgment and a variety of assumptions and known and unknown uncertainties, which may change quickly and significantly from time to time, particularly if and as we engage with applicable governmental agencies or plaintiffs in connection with a proceeding. Also, the matters underlying the reasonably possible loss will change from time to time. As a result, actual results may vary significantly from the current estimate. In certain pending matters, it is not currently feasible to reasonably estimate the amount or a range of reasonably possible loss, and such losses, which may be significant, are not included in the estimate of reasonably possible loss discussed above. This is due to, among other factors, the factors influencing reasonable estimates described above. An adverse outcome in one or more of the matters for which we have not estimated the amount or a range of reasonably possible loss, individually or in the aggregate, could have a material adverse effect on our businesses, on our future consolidated financial statements or on our reputation. Given that our actual losses from any legal or regulatory proceeding for which we have provided an estimate of the reasonably possible loss could significantly exceed such estimate, and given that we cannot estimate reasonably possible loss for all legal and regulatory proceedings as to which we may be subject now or in the future, no conclusion as to our ultimate exposure from current pending or potential legal or regulatory proceedings should be drawn from the current estimate of reasonably possible loss. The following discussion provides information with respect to significant legal, governmental and regulatory matters. Invoicing Matter In 2015, we determined that we had incorrectly invoiced clients for certain expenses. We have reimbursed most of our affected customers for those expenses, and we have implemented enhancements to our billing processes. In connection with our enhancements to our billing processes, we continue to review historical billing practices and may from time to time identify additional remediation. In 2017, we identified an additional area of incorrect expense billing associated with mailing services in our retirement services business. We currently expect the cumulative total of our payments to customers for these invoicing errors, including the error in the retirement services business, to be at least $380 million , all of which has been paid or is accrued. However, we may identify additional remediation costs. In March 2017, a purported class action was commenced against us alleging that our invoicing practices violated duties owed to retirement plan customers under the Employee Retirement Income Security Act. In addition, we have received a purported class action demand letter alleging that our invoicing practices were unfair and deceptive under Massachusetts law. A class of customers, or particular customers, may assert that we have not paid to them all amounts incorrectly invoiced, and may seek double or treble damages under Massachusetts law. We are also cooperating with investigations by governmental and regulatory authorities on these matters, including the civil and criminal divisions of the DOJ and the DOL, which reviews could result in significant fines or other sanctions, civil and criminal, against us. In June 2019, we reached an agreement with the SEC to settle its claims that we violated the recordkeeping provisions of Section 34(b) of the Investment Company Act of 1940 and caused violations of Section 31(a) of the Investment Company Act and Rules 31a-1(a) and 31a-1(b) thereunder in connection with our overcharges of customers which are registered investment companies. In reaching this settlement, we neither admitted nor denied the claims contained in the SEC’s order, and agreed to pay a civil monetary penalty of $40 million . Also in June 2019, we reached an agreement with the Massachusetts Attorney General’s office to resolve its claims related to this matter. In reaching this settlement, we neither admitted nor denied the claims in the order, and agreed to pay a civil monetary penalty of $5.5 million . The costs associated with these settlements were within our related previously established accruals for loss contingencies. The SEC and Massachusetts Attorney General’s office settlements both recognize that the payment of $48.8 million in disgorgement and interest is satisfied by our direct reimbursements of our customers. In late January 2020, the DOJ outlined a framework for a possible resolution of their review. We intend to attempt to negotiate a settlement of this matter with the DOJ. We expect that any settlement with the DOJ will include both financial and non-financial provisions. Separately, we have inquired of the DOL as to the status of their review. There can be no assurance that any settlement with the DOJ or DOL will be reached on financial or other terms acceptable to us or at all. The aggregate amount of penalties that may potentially be imposed upon us in connection with the resolution of all outstanding investigations into our historical billing practices is not currently known. We have increased our legal accrual with respect to the pending government investigations and civil litigation with respect to this matter. However, our ultimate liability with respect to this matter might be significantly in excess of our current accrual. Government authorities have significant discretion in criminal and civil matters as to the fines and other penalties they may seek to impose. Any resolution of the DOJ and DOL claims may involve penalties that could be a significant percentage, or a multiple of, all or a portion of the overcharge. The severity of such fines or penalties could take into account factors such as the amount or duration of our incorrect invoicing and the government’s or regulators’ assessment of the conduct of our employees, as well as prior conduct such as that which resulted in our January 2017 deferred prosecution agreement and settlement of civil claims regarding our indirect FX business. The outcome of any of these proceedings and, in particular, any criminal sanction could materially adversely affect our results of operations and could have significant collateral consequences for our business and reputation. Federal Reserve/Massachusetts Division of Banks Written Agreement On June 1, 2015, we entered into a written agreement with the Federal Reserve and the Massachusetts Division of Banks relating to deficiencies identified in our compliance programs with the requirements of the Bank Secrecy Act, Anti-Money Laundering regulations and U.S. economic sanctions regulations promulgated by the Office of Foreign Assets Control. As part of this enforcement action, we have been required to, among other things, implement improvements to our compliance programs. If we fail to comply with the terms of the written agreement, we may become subject to fines and other regulatory sanctions, which may have a material adverse effect on us. Shareholder Litigation A shareholder of ours has filed a derivative complaint against the Company’s past and present officers and directors to recover alleged losses incurred by the Company relating to the invoicing matter and to the Ohio public retirement plans matter. Income Taxes In determining our provision for income taxes, we make certain judgments and interpretations with respect to tax laws in jurisdictions in which we have business operations. Because of the complex nature of these laws, in the normal course of our business, we are subject to challenges from U.S. and non-U.S. income tax authorities regarding the amount of income taxes due. These challenges may result in adjustments to the timing or amount of taxable income or deductions or the allocation of taxable income among tax jurisdictions. We recognize a tax benefit when it is more likely than not that our position will result in a tax deduction or credit. Unrecognized tax benefits of approximately $149 million as of December 31, 2019 increased from $108 million as of December 31, 2018 . We are presently under audit by a number of tax authorities, and the Internal Revenue Service is currently reviewing our U.S. income tax returns for the tax years 2017 and 2018. The earliest tax year open to examination in jurisdictions where we have material operations is 2012. Management believes that we have sufficiently accrued liabilities as of December 31, 2019 for potential tax exposures.

Variable Interest Entities

Variable Interest Entities	12 Months Ended
Variable Interest Entities	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entities	Variable Interest Entities We are involved, in the normal course of our business, with various types of special purpose entities, some of which meet the definition of VIEs. When evaluating a VIE for consolidation, we must determine whether or not we have a variable interest in the entity. Variable interests are investments or other interests that absorb portions of an entity’s expected losses or receive portions of the entity’s expected returns. If it is determined that we do not have a variable interest in the VIE, no further analysis is required and we do not consolidate the VIE. If we hold a variable interest in a VIE, we are required by U.S. GAAP to consolidate that VIE when we have a controlling financial interest in the VIE and therefore are deemed to be the primary beneficiary. We are determined to have a controlling financial interest in a VIE when it has both the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance and the obligation to absorb losses or the right to receive benefits of the VIE that could potentially be significant to that VIE. This determination is evaluated periodically as facts and circumstances change. Asset-Backed Investment Securities We invest in various forms of ABS, which we carry in our investment securities portfolio. These ABS meet the U.S. GAAP definition of asset securitization entities, which are considered to be VIEs. We are not considered to be the primary beneficiary of these VIEs since we do not have control over their activities. Additional information about our ABS is provided in Note 3 . Tax-Exempt Investment Program In the normal course of our business, we structure and sell certificated interests in pools of tax-exempt investment grade assets, principally to our mutual fund clients. We structure these pools as partnership trusts, and the assets and liabilities of the trusts are recorded in our consolidated statement of condition as AFS investment securities and other short-term borrowings. As of December 31, 2019 and December 31, 2018 , we carried AFS investment securities, composed of securities related to state and political subdivisions, with a fair value of $0.94 billion and $1.05 billion , respectively, and other short-term borrowings of $0.82 billion and $0.93 billion , respectively, in our consolidated statement of condition in connection with these trusts. The interest income and interest expense generated by the investments and certificated interests, respectively, are recorded as components of NII when earned or incurred. We transfer assets to the trusts from our investment securities portfolio at adjusted book value, and the trusts finance the acquisition of these assets by selling certificated interests issued by the trust to third-party investors and to us as residual holder. These transfers do not meet the de-recognition criteria defined by U.S. GAAP, and therefore, the assets continue to be recorded in our consolidated financial statements. The trusts had a weighted-average life of approximately 3.0 years as of December 31, 2019 , compared to approximately 3.6 years as of December 31, 2018 . Under separate legal agreements, we provide liquidity facilities to these trusts and, with respect to certain securities, letters of credit. As of December 31, 2019 , our commitments to the trusts under these liquidity facilities and/or letters of credit totaled $823 million , and neither of the liquidity facilities nor letters of credit were utilized. In the event that our obligations under these liquidity facilities are triggered, no material impact to our consolidated results of operations or financial condition is expected to occur, because the securities are already recorded at fair value in our consolidated statement of condition. In addition, neither creditors or third-party investors in the trusts have any recourse to our general credit other than through the liquidity facilities and letters of credit noted above. Interests in Investment Funds In the normal course of business, we manage various types of investment funds through State Street Global Advisors in which our clients are investors, including State Street Global Advisors commingled investment vehicles and other similar investment structures. The majority of our AUM are contained within such funds. The services we provide to these funds generate management fee revenue. From time to time, we may invest cash in the funds in order for the funds to establish a performance history for newly-launched strategies, referred to as seed capital, or for other purposes. With respect to our interests in funds that meet the definition of a VIE, a primary beneficiary assessment is performed to determine if we have a controlling financial interest. As part of our assessment, we consider all the facts and circumstances regarding the terms and characteristics of the variable interest(s), the design and characteristics of the fund and the other involvements of the enterprise with the fund. Upon consolidation of certain funds, we retain the specialized investment company accounting rules followed by the underlying funds. All of the underlying investments held by such consolidated funds are carried at fair value, with corresponding changes in the investments’ fair values reflected in foreign exchange trading services revenue in our consolidated statement of income. When we no longer control these funds due to a reduced ownership interest or other reasons, the funds are de-consolidated and accounted for under another accounting method if we continue to maintain investments in the funds. As of December 31, 2019 , the aggregate assets and liabilities of our consolidated sponsored investment funds totaled $21 million and $5 million , respectively. As of December 31, 2019, our maximum total exposure associated with the consolidated sponsored investment funds totaled $15 million and represented the value of our economic ownership interest in the funds. As of December 31, 2018 , we did no t have any consolidated sponsored investment funds. Our conclusion to consolidate a fund may vary from period to period, most commonly as a result of fluctuation in our ownership interest as a result of changes in the number of fund shares held by either us or by third parties. Given that the funds follow specialized investment company accounting rules which prescribe fair value, a de-consolidation generally would not result in gains or losses for us. The net assets of any consolidated fund are solely available to settle the liabilities of the fund and to settle any investors’ ownership redemption requests, including any seed capital invested in the fund by us. We are not contractually required to provide financial or any other support to any of our funds. In addition, neither creditors nor equity investors in the funds have any recourse to our general credit. As of December 31, 2019 and December 31, 2018 , we managed certain funds, considered VIEs, in which we held a variable interest but for which we were not deemed to be the primary beneficiary. Our potential maximum loss exposure related to these unconsolidated funds totaled approximately $41 million and $70 million as of December 31, 2019 and December 31, 2018 , respectively, and represented the carrying value of our investments, which are recorded in either AFS investment securities or other assets in our consolidated statement of condition. The amount of loss we may recognize during any period is limited to the carrying amount of our investments in the unconsolidated funds.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
Shareholders' Equity	Dec. 31, 2019
Equity [Abstract]
Shareholders' Equity	Shareholders' Equity Preferred Stock The following table summarizes selected terms of each of the series of the preferred stock issued and outstanding as of December 31, 2019 : Preferred Stock (2) : Issuance Date Depositary Shares Issued Ownership Interest Per Depositary Share Liquidation Preference Per Share Liquidation Preference Per Depositary Share Per Annum Dividend Rate Dividend Payment Frequency Carrying Value as of December 31, 2019 Redemption Date (1) Series C August 2012 20,000,000 1/4,000th $ 100,000 $ 25 5.25% Quarterly $ 491 September 15, 2017 Series D February 2014 30,000,000 1/4,000th 100,000 25 5.90% to but excluding March 15, 2024, then a floating rate equal to the three-month LIBOR plus 3.108% Quarterly 742 March 15, 2024 Series F May 2015 750,000 1/100th 100,000 1,000 5.25% to but excluding September 15, 2020, then a floating rate equal to the three-month LIBOR plus 3.597% Semi-annually 742 September 15, 2020 Series G April 2016 20,000,000 1/4,000th 100,000 25 5.35% to but excluding March 15, 2026, then a floating rate equal to the three-month LIBOR plus 3.709% Quarterly 493 March 15, 2026 Series H September 2018 500,000 1/100th 100,000 1,000 5.625% to but excluding December 15, 2023, then a floating rate equal to the three-month LIBOR plus 2.539% Semi-annually 494 December 15, 2023 (1) On the redemption date, or any dividend payment date thereafter, the preferred stock and corresponding depositary shares may be redeemed by us, in whole or in part, at the liquidation price per share and liquidation price per depositary share plus any declared and unpaid dividends, without accumulation of any undeclared dividends. (2) The preferred stock and corresponding depositary shares may be redeemed at our option in whole, but not in part, prior to the redemption date upon the occurrence of a regulatory capital treatment event, as defined in the certificate of designation, at a redemption price equal to the liquidation price per share and liquidation price per depositary share plus any declared and unpaid dividends, without accumulation of any undeclared dividends. We redeemed all outstanding Series E non-cumulative perpetual preferred stock as of December 15, 2019 at a redemption price of $750 million ($100,000 per share equivalent to $25.00 per depositary share) plus accrued and unpaid dividends. The difference of $22 million between the redemption value and the net carrying value resulted in an EPS impact of approximately ($0.06) per share in 2019. On February 12, 2020, we announced that we will redeem all 5,000 of our outstanding shares of our non-cumulative perpetual preferred stock, Series C, for cash at a redemption price of $100,000 per share (equivalent to $25.00 per depositary share) plus all declared and unpaid dividends. The redemption price will be payable on March 16, 2020, and this redemption will be reflected in our first quarter 2020 results of operations. The following table presents the dividends declared for each of the series of preferred stock issued and outstanding for the periods indicated: Years Ended December 31, 2019 2018 (Dollars in millions, except per share amounts) Dividends Declared per Share Dividends Declared per Depositary Share Total Dividends Declared per Share Dividends Declared per Depositary Share Total Preferred Stock: Series C $ 5,250 $ 1.32 $ 26 $ 5,250 $ 1.32 $ 26 Series D 5,900 1.48 44 5,900 1.48 44 Series E 6,000 1.52 45 6,000 1.52 45 Series F 5,250 52.50 40 5,250 52.50 40 Series G 5,352 1.32 27 5,352 1.32 27 Series H 5,625 56.25 28 1,219 12.18 6 Total $ 210 $ 188 In February 2020, we declared dividends on our series D, F and G preferred stock of approximately $1,475 , $2,625 and $1,338 , respectively, per share, or approximately $0.37 , $26.25 and $0.33 , respectively, per depositary share. These dividends total approximately $11 million , $20 million and $7 million on our series D, F and G preferred stock, respectively, which will be paid in March 2020. We also announced dividends on our series C preferred stock of approximately $1,313 , per share, or approximately $0.33 per depositary share, totaling approximately $6 million , which will be paid in March 2020. Common Stock In June 2019, our Board approved a common stock purchase program authorizing the purchase of up to $2.0 billion of our common stock from July 1, 2019 through June 30, 2020 (the 2019 Program). We repurchased $500 million of our common stock in each of the third and fourth quarters of 2019 under the 2019 Program. In June 2018, our Board approved a common stock purchase program authorizing the purchase of up to $1.2 billion of our common stock through June 30, 2019 (the 2018 Program). We repurchased $300 million of our common stock in each of the first and second quarters of 2019 under the 2018 Program. The table below presents the activity under our common stock purchase program during the year ended December 31, 2019: Year Ended December 31, 2019 Shares Acquired Average Cost per Share Total Acquired 2018 Program 8.8 $ 67.97 $ 600 2019 Program 16.1 62.28 1,000 Total 24.9 64.30 $ 1,600 The table below presents the dividends declared on common stock for the periods indicated: Years Ended December 31, 2019 2018 Dividends Declared per Share Total (In millions) Dividends Declared per Share Total (In millions) Common Stock $ 1.98 $ 728 $ 1.78 $ 665 Accumulated Other Comprehensive Income (Loss) The following table presents the after-tax components of AOCI as of the dates indicated: Years Ended December 31, (In millions) 2019 2018 2017 Net unrealized (losses) on cash flow hedges $ (70 ) $ (89 ) $ (56 ) Net unrealized gains (losses) on available-for-sale securities portfolio 426 (193 ) 148 Net unrealized gains related to reclassified available-for-sale securities 19 58 19 Net unrealized gains (losses) on available-for-sale securities 445 (135 ) 167 Net unrealized (losses) on available-for-sale securities designated in fair value hedges (36 ) (40 ) (64 ) Net unrealized gains on hedges of net investments in non-U.S. subsidiaries 46 16 (65 ) Other-than-temporary impairment on held-to-maturity securities related to factors other than credit (2 ) (2 ) (6 ) Net unrealized (losses) on retirement plans (187 ) (143 ) (170 ) Foreign currency translation (1,072 ) (963 ) (815 ) Total $ (876 ) $ (1,356 ) $ (1,009 ) The following table presents changes in AOCI by component, net of related taxes, for the periods indicated: (In millions) Net Unrealized Gains (Losses) on Cash Flow Hedges Net Unrealized Gains (Losses) on Available-for-Sale Securities Net Unrealized Gains (Losses) on Hedges of Net Investments in Non-U.S. Subsidiaries Other-Than-Temporary Impairment on Held-to-Maturity Securities Net Unrealized Losses on Retirement Plans Foreign Currency Translation Total Balance as of December 31, 2017 $ (56 ) $ 103 $ (65 ) $ (6 ) $ (170 ) $ (815 ) $ (1,009 ) Other comprehensive income (loss) before reclassifications (52 ) (285 ) 81 6 — (148 ) (398 ) Amounts reclassified into (out of) earnings 19 7 — (2 ) 27 — 51 Other comprehensive income (loss) (33 ) (278 ) 81 4 27 (148 ) (347 ) Balance as of December 31, 2018 $ (89 ) $ (175 ) $ 16 $ (2 ) $ (143 ) $ (963 ) $ (1,356 ) Other comprehensive income (loss) before reclassifications 13 563 33 2 — (42 ) 569 Reclassification of certain tax effects (1) (6 ) 21 (3 ) (1 ) (28 ) (67 ) (84 ) Amounts reclassified into (out of) earnings 12 — — (1 ) (16 ) — (5 ) Other comprehensive income (loss) 19 584 30 — (44 ) (109 ) 480 Balance as of December 31, 2019 $ (70 ) $ 409 $ 46 $ (2 ) $ (187 ) $ (1,072 ) $ (876 ) (1) Represents the reclassification from accumulated other comprehensive income into retained earnings as a result of our adoption of ASU 2018-02 - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income in the first quarter of 2019. The following table presents after-tax reclassifications into earnings for the periods indicated: Years Ended December 31, 2019 2018 (In millions) Amounts Reclassified into Affected Line Item in Consolidated Statement of Income Available-for-sale securities: Net realized gains (losses) from sales of available-for-sale securities, net of related taxes of zero and ($2), respectively $ — $ 7 Net gains (losses) from sales of available-for-sale securities Held-to-maturity securities: Other-than-temporary impairment on held-to-maturity securities related to factors other than credit, net of related taxes of zero and $1, respectively (1 ) (2 ) Losses reclassified (from) to other comprehensive income Cash flow hedges: Gain reclassified from accumulated other comprehensive income into Income, net of related taxes of $5 and $7 12 19 Net interest income reclassified from other comprehensive income Retirement plans: Amortization of actuarial losses, net of related taxes of ($8) and $8, respectively (16 ) 27 Compensation and employee benefits expenses Total reclassifications (into) out of Accumulated other comprehensive loss $ (5 ) $ 51

Regulatory Capital

Regulatory Capital	12 Months Ended
Regulatory Capital	Dec. 31, 2019
Banking and Thrift [Abstract]
Regulatory Capital	Regulatory Capital We are subject to various regulatory capital requirements administered by federal banking agencies. Failure to meet minimum regulatory capital requirements can initiate certain mandatory and discretionary actions by regulators that, if undertaken, could have a direct material effect on our consolidated financial condition. Under current regulatory capital adequacy guidelines, we must meet specified capital requirements that involve quantitative measures of our consolidated assets, liabilities and off-balance sheet exposures calculated in conformity with regulatory accounting practices. Our capital components and their classifications are subject to qualitative judgments by regulators about components, risk weightings and other factors. As required by the Dodd-Frank Act, we and State Street Bank, as advanced approaches banking organizations, are subject to a permanent "capital floor" in the calculation and assessment of regulatory capital adequacy by U.S. banking regulators. Beginning on January 1, 2015, we were required to calculate our risk- based capital ratios using both the advanced approaches and the standardized approach. As a result, from January 1, 2015 going forward, our risk-based capital ratios for regulatory assessment purposes are the lower of each ratio calculated under the standardized approach and the advanced approaches. The methods for the calculation of our and State Street Bank's risk-based capital ratios have changed as the provisions of the Basel III rule related to the numerator (capital) and denominator (RWA) were phased in, and as we calculated our RWA using the advanced approaches. These ongoing methodological changes have resulted in differences in our reported capital ratios from one reporting period to the next that are independent of applicable changes to our capital base, our asset composition, our off-balance sheet exposures or our risk profile. As of December 31, 2019 , we and State Street Bank exceeded all regulatory capital adequacy requirements to which we were subject. As of December 31, 2019 , State Street Bank was categorized as “well capitalized” under the applicable regulatory capital adequacy framework, and exceeded all “well capitalized” ratio guidelines to which it was subject. Management believes that no conditions or events have occurred since December 31, 2019 that have changed the capital categorization of State Street Bank. The following table presents the regulatory capital structure, total RWA, related regulatory capital ratios and the minimum required regulatory capital ratios for us and State Street Bank as of the dates indicated. As a result of changes in the methodologies used to calculate our regulatory capital ratios from period to period as the provisions of the Basel III rule were phased in, the ratios presented in the table for each period-end are not directly comparable. Refer to the footnotes following the table. State Street Corporation State Street Bank (Dollars in millions) Basel III Advanced Approaches December 31, 2019 (1) Basel III Standardized Approach December 31, 2019 (1) Basel III Advanced Approaches December 31, 2018 (1) Basel III Standardized Approach December 31, 2018 (1) Basel III Advanced Approaches December 31, 2019 (1) Basel III Standardized Approach December 31, 2019 (1) Basel III Advanced Approaches December 31, 2018 (1) Basel III Standardized Approach December 31, 2018 (1) Common shareholders' equity: Common stock and related surplus $ 10,636 $ 10,636 $ 10,565 $ 10,565 $ 12,893 $ 12,893 $ 12,894 $ 12,894 Retained earnings 21,918 21,918 20,606 20,606 13,218 13,218 14,261 14,261 Accumulated other comprehensive income (loss) (870 ) (870 ) (1,332 ) (1,332 ) (654 ) (654 ) (1,112 ) (1,112 ) Treasury stock, at cost (10,209 ) (10,209 ) (8,715 ) (8,715 ) — — — — Total 21,475 21,475 21,124 21,124 25,457 25,457 26,043 26,043 Regulatory capital adjustments: Goodwill and other intangible assets, net of associated deferred tax liabilities (9,112 ) (9,112 ) (9,350 ) (9,350 ) (8,839 ) (8,839 ) (9,073 ) (9,073 ) Other adjustments (150 ) (150 ) (194 ) (194 ) (1 ) (1 ) (29 ) (29 ) Common equity tier 1 capital 12,213 12,213 11,580 11,580 16,617 16,617 16,941 16,941 Preferred stock 2,962 2,962 3,690 3,690 — — — — Tier 1 capital 15,175 15,175 15,270 15,270 16,617 16,617 16,941 16,941 Qualifying subordinated long-term debt 1,095 1,095 778 778 1,099 1,099 776 776 Allowance for loan losses and other 5 90 14 83 3 90 11 83 Total capital $ 16,275 $ 16,360 $ 16,062 $ 16,131 $ 17,719 $ 17,806 $ 17,728 $ 17,800 Risk-weighted assets: Credit risk (2) $ 54,763 $ 102,367 $ 47,738 $ 97,303 $ 51,610 $ 98,979 $ 45,565 $ 94,776 Operational risk (3) 47,963 NA 46,060 NA 44,138 NA 44,494 NA Market risk 1,638 1,638 1,517 1,517 1,638 1,638 1,517 1,517 Total risk-weighted assets $ 104,364 $ 104,005 $ 95,315 $ 98,820 $ 97,386 $ 100,617 $ 91,576 $ 96,293 Adjusted quarterly average assets $ 219,624 $ 219,624 $ 211,924 $ 211,924 $ 216,397 $ 216,397 $ 209,413 $ 209,413 Capital Ratios: 2019 Minimum Requirements Including Capital Conservation Buffer and G-SIB Surcharge (4) 2018 Minimum Requirements Including Capital Conservation Buffer and G-SIB Surcharge (5) Common equity tier 1 capital 8.5 % 7.5 % 11.7 % 11.7 % 12.1 % 11.7 % 17.1 % 16.5 % 18.5 % 17.6 % Tier 1 capital 10.0 9.0 14.5 14.6 16.0 15.5 17.1 16.5 18.5 17.6 Total capital 12.0 11.0 15.6 15.7 16.9 16.3 18.2 17.7 19.4 18.5 (1) Other adjustments within CET1 primarily include the overfunded portion of the firm’s defined benefit pension plan obligation net of associated deferred tax liabilities, disallowed deferred tax assets, and other required credit risk based deductions. (2) Includes a CVA which reflects the risk of potential fair value adjustments for credit risk reflected in our valuation of OTC derivative contracts. We used a simple CVA approach in conformity with the Basel III advanced approaches. (3) Under the current advanced approaches rules and regulatory guidance concerning operational risk models, RWA attributable to operational risk can vary substantially from period-to-period, without direct correlation to the effects of a particular loss event on our results of operations and financial condition and impacting dates and periods that may differ from the dates and periods as of and during which the loss event is reflected in our financial statements, with the timing and categorization dependent on the processes for model updates and, if applicable, model revalidation and regulatory review and related supervisory processes. An individual loss event can have a significant effect on the output of our operational RWA under the advanced approaches depending on the severity of the loss event and its categorization among the seven Basel-defined UOMs. (4) Minimum requirements were phased in with full implementation beginning on January 1, 2019; minimum requirements listed are as of December 31, 2019 . (5) Minimum requirements were phased in with full implementation beginning on January 1, 2019; minimum requirements listed are as of December 31, 2018 . NA Not applicable

Net Interest Income

Net Interest Income	12 Months Ended
Net Interest Income	Dec. 31, 2019
Banking and Thrift [Abstract]
Net Interest Income	Net Interest Income The following table presents the components of interest income and interest expense, and related NII, for the periods indicated: Years Ended December 31, (In millions) 2019 2018 2017 Interest income: Interest-bearing deposits with banks $ 416 $ 387 $ 180 Investment securities: U.S. Treasury and federal agencies 1,443 1,178 854 State and political subdivisions 49 143 226 Other investments 505 560 658 Securities purchased under resale agreements 364 335 264 Loans and leases 769 687 504 Other interest-earning assets 395 372 222 Total interest income 3,941 3,662 2,908 Interest expense: Interest-bearing deposits 663 363 163 Securities sold under repurchase agreements 31 13 2 Other short-term borrowings 21 17 10 Long-term debt 414 389 308 Other interest-bearing liabilities 246 209 121 Total interest expense 1,375 991 604 Net interest income $ 2,566 $ 2,671 $ 2,304

Equity-Based Compensation

Equity-Based Compensation	12 Months Ended
Equity-Based Compensation	Dec. 31, 2019
Share-based Payment Arrangement [Abstract]
Equity-Based Compensation	Equity-Based Compensation We record compensation expense for equity-based awards, such as deferred stock and performance awards, based on the closing price of our common stock on the date of grant, adjusted if appropriate, based on the eligibility of the award to receive dividends. Compensation expense related to equity-based awards with service-only conditions and terms that provide for a graded vesting schedule is recognized on a straight-line basis over the required service period for the entire award. Compensation expense related to equity-based awards with performance conditions and terms that provide for a graded vesting schedule is recognized over the requisite service period for each separately vesting tranche of the award, and is based on the probable outcome of the performance conditions at each reporting date. Compensation expense is adjusted for assumptions with respect to the estimated amount of awards that will be forfeited prior to vesting, and for employees who have met certain retirement eligibility criteria. Compensation expense for common stock awards granted to employees meeting early retirement eligibility criteria is fully expensed on the grant date. Dividend equivalents for certain equity-based awards are paid on stock units on a current basis prior to vesting and distribution. The 2017 Stock Incentive Plan, or 2017 Plan, was approved by shareholders in May 2017 for issuance of stock and stock based awards. Awards may be made under the 2017 Plan for (i) up to 8.3 million shares of common stock plus (ii) up to an additional 28.5 million shares that were available to be issued under the 2006 Equity Incentive Plan, or 2006 Plan, or may become available for issuance under the 2006 Plan due to expiration, termination, cancellation, forfeiture or repurchase of awards granted under the 2006 Plan. As of December 31, 2019, a total of 19.7 million shares from the 2006 Plan have been added to and may be issued from the 2017 Plan. The following table presents the cumulative total number of shares that was awarded under the 2017 Plan and the 2006 Plan for the periods indicated: As of December 31, (In millions) 2019 2018 2017 Total number of shares awarded under the 2006 Plan 68.9 68.9 68.9 Total number of shares awarded under the 2017 Plan 7.6 3.9 0.4 The 2017 Plan allows for shares withheld in payment of the exercise price of an award or in satisfaction of tax withholding requirements, shares forfeited due to employee termination, shares expired under option awards, or shares not delivered when performance conditions have not been met, to be added back to the pool of shares available for issuance under the 2017 Plan. From inception to December 31, 2019 , fewer than 1 million shares had been awarded under the 2017 Plan but not delivered, and have become available for re-issue. As of December 31, 2019 , a total of 21.3 million shares were available for future issuance under the 2017 Plan. For deferred stock awards granted under the Plans, no common stock is issued at the time of grant and the award does not possess dividend and voting rights. Generally, these grants vest over one to four years . Performance awards granted are earned over a performance period based on the achievement of defined goals, generally over three years . Payment for performance awards is made in shares of our common stock equal to its fair market value per share, based on the performance of certain financial ratios, after the conclusion of each performance period. Beginning with 2012, malus-based forfeiture provisions were included in deferred stock awards granted to employees identified as “material risk-takers,” as defined by management. These malus-based forfeiture provisions provide for the reduction or cancellation of unvested deferred compensation, such as deferred stock awards and performance based awards, if it is determined that a material risk-taker made risk-based decisions that exposed us to inappropriate risks that resulted in a material unexpected loss at the business-unit, line-of-business or corporate level. In addition, awards granted to certain of our senior executives, as well as awards granted to individuals in certain jurisdictions, may be subject to recoupment after vesting (if applicable) and delivery to the individual in specified circumstances generally relating to fraud or willful misconduct by the individual that results in material harm to us or a material financial restatement. Compensation expense related to deferred stock awards and performance awards, which we record as a component of compensation and employee benefits expense in our consolidated statement of income, was $235 million , $262 million and $243 million for the years ended December 31, 2019 , 2018 and 2017 , respectively. Such expense for 2019 , 2018 and 2017 excluded a release of $4 million , an expense of $45 million and $15 million , respectively, associated with acceleration of expense in connection with targeted staff reductions. This expense was included in the severance-related portion of the associated restructuring or repositioning charges recorded in each respective year. For the year ended December 31, 2019 , no stock appreciation rights were exercised. The total intrinsic value of stock appreciation rights exercised during the years ended December 31, 2018 and 2017 was $0 million and $5 million , respectively. As of December 31, 2019 , there was no unrecognized compensation cost related to stock appreciation rights. Shares (In thousands) Weighted-Average Grant Date Fair Value Deferred Stock Awards: Outstanding as of December 31, 2017 6,848 $ 65.44 Granted 2,500 101.25 Vested (3,235 ) 70.98 Forfeited (138 ) 80.60 Outstanding as of December 31, 2018 5,975 77.07 Granted 3,168 66.68 Vested (3,089 ) 71.20 Forfeited (220 ) 75.85 Outstanding as of December 31, 2019 5,834 74.33 The total fair value of deferred stock awards vested for the years ended December 31, 2019 , 2018 and 2017 , based on the weighted average grant date fair value in each respective year, was $220 million , $230 million and $232 million , respectively. As of December 31, 2019 , total unrecognized compensation cost related to deferred stock awards, net of estimated forfeitures, was $212 million , which is expected to be recognized over a weighted-average period of 2.4 years . Shares (In thousands) Weighted-Average Grant Date Fair Value Performance Awards: Outstanding as of December 31, 2017 1,548 $ 66.09 Granted 1,067 74.68 Forfeited (1 ) 101.26 Paid out (457 ) 70.58 Outstanding as of December 31, 2018 2,157 69.36 Granted 510 66.04 Forfeited (96 ) 74.82 Paid out (432 ) 51.01 Outstanding as of December 31, 2019 2,139 71.82 The total fair value of performance awards vested for the years ended December 31, 2019 , 2018 and 2017 , based on the weighted average grant date fair value in each respective year, was $22 million , $32 million and $14 million , respectively. As of December 31, 2019 , total unrecognized compensation cost related to performance awards, net of estimated forfeitures, was $39 million , which is expected to be recognized over a weighted-average period of 1.9 years . We utilize either treasury shares or authorized but unissued shares to satisfy the issuance of common stock under our equity incentive plans. We do not have a specific policy concerning purchases of our common stock to satisfy stock issuances. We have a general policy concerning purchases of our common stock to meet issuances under our employee benefit plans, including other corporate purposes. Various factors determine the amount and timing of our purchases of our common stock, including regulatory reviews and approvals or non-objections, our regulatory capital requirements, the number of shares we expect to issue under employee benefit plans, market conditions (including the trading price of our common stock), and legal considerations. These factors can change at any time, and the number of shares of common stock we will purchase or when we will purchase them cannot be assured. Additional information on our common stock purchase program is provided in Note 15 .

Employee Benefits

Employee Benefits	12 Months Ended
Employee Benefits	Dec. 31, 2019
Retirement Benefits [Abstract]
Employee Benefits	Employee Benefits Defined Benefit Pension and Other Post-Retirement Benefit Plans State Street Bank and certain of its U.S. subsidiaries participate in a non-contributory, tax-qualified defined benefit pension plan. The U.S. defined benefit pension plan was frozen as of December 31, 2007 and no new employees were eligible to participate after that date. We have agreed to contribute sufficient amounts as necessary to meet the benefits paid to plan participants and to fund the plan’s service cost, plus interest. U.S. employee account balances earn annual interest credits until the employee begins receiving benefits. Non-U.S. employees participate in local defined benefit plans which are funded as required in each local jurisdiction. In addition to the defined benefit pension plans, we have non-qualified unfunded SERP s that provide certain officers with defined pension benefits in excess of allowable qualified plan limits. State Street Bank and certain of its U.S. subsidiaries also participate in a post-retirement plan that provides health care benefits for certain retired employees. The total expense for these tax-qualified and non-qualified plans was $8 million , $11 million and $15 million in 2019 , 2018 and 2017 , respectively. We recognize the funded status of our defined benefit pension plans and other post-retirement benefit plans, measured as the difference between the fair value of the plan assets and the projected benefit obligation, in the consolidated statement of position. The assets held by the defined benefit pension plans are largely made up of common, collective funds that are liquid and invest principally in U.S. equities and high-quality fixed-income investments. The majority of these assets fall within Level 2 of the fair value hierarchy. The benefit obligations associated with our primary U.S. and non-U.S. defined benefit plans, non-qualified unfunded supplemental retirement plans and post-retirement plans were $1.37 billion , $88 million and $10 million , respectively, as of December 31, 2019 and $1.21 billion , $110 million and $12 million , respectively, as of December 31, 2018 . As the primary defined benefit plans are frozen, the benefit obligation will only vary over time as a result of changes in market interest rates, the life expectancy of the plan participants and payments made from the plans. The primary U.S. and non-U.S. defined benefit pension plans were overfunded by $10 million and underfunded by $1 million as of December 31, 2019 and 2018 , respectively. The non-qualified supplemental retirement plans were underfunded by $88 million and $110 million as of December 31, 2019 and 2018 , respectively. The other post-retirement benefit plans were underfunded by $10 million and $12 million as of December 31, 2019 and 2018 , respectively. The underfunded status is included in other liabilities. Defined Contribution Retirement Plans We contribute to employer-sponsored U.S. and non-U.S. defined contribution plans. Our contribution to these plans was $167 million , $170 million and $146 million in 2019 , 2018 and 2017 , respectively.

Occupancy Expense and Informati

Occupancy Expense and Information Systems and Communications Expense	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Occupancy Expense and Information Systems and Communications Expense	Occupancy Expense and Information Systems and Communications Expense Upon adoption of Topic 842 on January 1, 2019, we recognized right-of-use assets of approximately $0.91 billion and lease liabilities of approximately $1.06 billion . Occupancy expense and information systems and communications expense include depreciation of buildings, leasehold improvements, computer hardware and software, equipment, furniture and fixtures, and amortization of lease right-of-use assets. Total depreciation and amortization expense in 2019 , 2018 and 2017 was $842 million , $ 599 million and $526 million , respectively. We use our incremental borrowing rate to determine the present value of the lease payments for finance and operating leases described below. Additionally, we do not separate nonlease components such as real estate taxes and common area maintenance from base lease payments. As of December 31, 2019 and 2018 , an aggregate net book value of $78 million and $ 102 million , respectively, for the finance lease related to our One Lincoln Street Boston headquarters was recorded in premises and equipment, with the related liability of $136 million and $190 million , respectively, recorded in long-term debt, in our consolidated statement of condition. Finance lease right-of-use asset amortization is recorded in occupancy expense on a straight-line basis in our consolidated statement of income over the respective lease term. As of December 31, 2019 , accumulated amortization of the finance lease right-of-use asset was $56 million . Lease payments are recorded as a reduction of the liability, with a portion recorded as imputed interest expense. In 2019 and 2018 , interest expense related to the finance lease obligation reflected in NII was $11 million and $17 million , respectively. As of December 31, 2019 , an aggregate net book value of $858 million for the operating lease right-of-use assets is recorded in other assets, with the related lease liability of $1,020 million recorded in accrued expenses and other liabilities in our consolidated statement of condition. We have entered into non-cancellable operating leases for premises and equipment. Nearly all of these leases include renewal options, and only those reasonably certain of being exercised are included in the term of the lease. Costs for operating leases are recorded on a straight-line basis which includes both interest expense and right-of-use asset amortization. Operating lease costs for office space are recorded in occupancy expense. Costs related to operating leases for equipment are recorded in information systems and communications expense. As of December 31, 2019 , we have additional operating leases, primarily for office space, that have not yet commenced of approximately $484 million of undiscounted future minimum lease payments. These leases will commence between fiscal year 2020 and fiscal year 2023 with lease terms of 10 to 15 years . The majority of these future payments relate to the new Boston headquarters lease executed in the first quarter of 2019, replacing the One Lincoln Street Boston property. None of our leases contain residual value guarantees. The following table presents lease costs, sublease rental income, cash flows and new leases arising from lease transactions for 2019 : (In millions) Year End December 31, 2019 Finance lease: Amortization of right-of-use assets $ 21 Interest on lease liabilities 11 Total finance lease expense 32 Sublease income (9 ) Net finance lease expense 23 Operating lease: Operating lease expense 179 Sublease income (6 ) Net operating lease expense 173 Net lease expense $ 196 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from finance leases $ 11 Operating cash flows from operating leases 201 Financing cash flows from finance leases 54 Right-of-use assets obtained in exchange for new lease obligations: Operating leases $ 120 Finance leases — The following table presents future minimum lease payments under non-cancellable leases as of December 31, 2019 : (In millions) Operating Leases Finance Leases Total 2020 $ 183 $ 41 $ 224 2021 180 41 221 2022 164 41 205 2023 143 31 174 2024 108 — 108 Thereafter 356 — 356 Total future minimum lease payments 1,134 154 1,288 Less imputed interest (114 ) (18 ) (132 ) Total $ 1,020 $ 136 $ 1,156 The following table presents details related to remaining lease terms and discount rate as of December 31, 2019 : December 31, 2019 Weighted-average remaining lease term (in years): Finance leases 3.8 Operating leases 7.6 Weighted-average discount rate: Finance leases 7 % Operating leases 3 %
Occupancy Expense and Information Systems and Communications Expense	Occupancy Expense and Information Systems and Communications Expense Upon adoption of Topic 842 on January 1, 2019, we recognized right-of-use assets of approximately $0.91 billion and lease liabilities of approximately $1.06 billion . Occupancy expense and information systems and communications expense include depreciation of buildings, leasehold improvements, computer hardware and software, equipment, furniture and fixtures, and amortization of lease right-of-use assets. Total depreciation and amortization expense in 2019 , 2018 and 2017 was $842 million , $ 599 million and $526 million , respectively. We use our incremental borrowing rate to determine the present value of the lease payments for finance and operating leases described below. Additionally, we do not separate nonlease components such as real estate taxes and common area maintenance from base lease payments. As of December 31, 2019 and 2018 , an aggregate net book value of $78 million and $ 102 million , respectively, for the finance lease related to our One Lincoln Street Boston headquarters was recorded in premises and equipment, with the related liability of $136 million and $190 million , respectively, recorded in long-term debt, in our consolidated statement of condition. Finance lease right-of-use asset amortization is recorded in occupancy expense on a straight-line basis in our consolidated statement of income over the respective lease term. As of December 31, 2019 , accumulated amortization of the finance lease right-of-use asset was $56 million . Lease payments are recorded as a reduction of the liability, with a portion recorded as imputed interest expense. In 2019 and 2018 , interest expense related to the finance lease obligation reflected in NII was $11 million and $17 million , respectively. As of December 31, 2019 , an aggregate net book value of $858 million for the operating lease right-of-use assets is recorded in other assets, with the related lease liability of $1,020 million recorded in accrued expenses and other liabilities in our consolidated statement of condition. We have entered into non-cancellable operating leases for premises and equipment. Nearly all of these leases include renewal options, and only those reasonably certain of being exercised are included in the term of the lease. Costs for operating leases are recorded on a straight-line basis which includes both interest expense and right-of-use asset amortization. Operating lease costs for office space are recorded in occupancy expense. Costs related to operating leases for equipment are recorded in information systems and communications expense. As of December 31, 2019 , we have additional operating leases, primarily for office space, that have not yet commenced of approximately $484 million of undiscounted future minimum lease payments. These leases will commence between fiscal year 2020 and fiscal year 2023 with lease terms of 10 to 15 years . The majority of these future payments relate to the new Boston headquarters lease executed in the first quarter of 2019, replacing the One Lincoln Street Boston property. None of our leases contain residual value guarantees. The following table presents lease costs, sublease rental income, cash flows and new leases arising from lease transactions for 2019 : (In millions) Year End December 31, 2019 Finance lease: Amortization of right-of-use assets $ 21 Interest on lease liabilities 11 Total finance lease expense 32 Sublease income (9 ) Net finance lease expense 23 Operating lease: Operating lease expense 179 Sublease income (6 ) Net operating lease expense 173 Net lease expense $ 196 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from finance leases $ 11 Operating cash flows from operating leases 201 Financing cash flows from finance leases 54 Right-of-use assets obtained in exchange for new lease obligations: Operating leases $ 120 Finance leases — The following table presents future minimum lease payments under non-cancellable leases as of December 31, 2019 : (In millions) Operating Leases Finance Leases Total 2020 $ 183 $ 41 $ 224 2021 180 41 221 2022 164 41 205 2023 143 31 174 2024 108 — 108 Thereafter 356 — 356 Total future minimum lease payments 1,134 154 1,288 Less imputed interest (114 ) (18 ) (132 ) Total $ 1,020 $ 136 $ 1,156 The following table presents details related to remaining lease terms and discount rate as of December 31, 2019 : December 31, 2019 Weighted-average remaining lease term (in years): Finance leases 3.8 Operating leases 7.6 Weighted-average discount rate: Finance leases 7 % Operating leases 3 %

Expenses

Expenses	12 Months Ended
Expenses	Dec. 31, 2019
Other Expenses [Abstract]
Expenses	Expenses The following table presents the components of other expenses for the periods indicated: Years Ended December 31, (In millions) 2019 2018 2017 Professional services $ 321 $ 357 $ 340 Sales advertising public relations 114 115 67 Securities processing 75 52 10 Regulatory fees and assessments 73 91 108 Bank operations 43 70 80 Donations 51 12 17 Insurance 19 18 20 Other 566 461 287 Total other expenses $ 1,262 $ 1,176 $ 929 Acquisition Costs We recorded $79 million of acquisition costs in 2019 , primarily related to our acquisition of CRD. In 2018 , we recorded approximately $31 million of acquisition costs related to our acquisition of CRD and in 2017 we recorded approximately $21 million of acquisition costs primarily related to our acquisition of the GEAM business. As we integrate CRD into our business, we expect to incur approximately $200 million of acquisition costs, including merger and integration costs, through 2021. Restructuring and Repositioning Charges Repositioning Charges In 2019 , we recorded $110 million of repositioning charges, including $98 million of compensation and employee benefits expenses and $12 million of occupancy costs, to further drive process automation, information technology optimizations and organization rationalization in 2020. In late 2018 , we initiated an expense program to accelerate efforts to become a higher-performing organization and help navigate challenging market and industry conditions. Total repositioning charges were $300 million in 2018 , including $259 million of compensation and employee benefits expenses and $41 million of occupancy costs. The following table presents aggregate activity for repositioning charges and activity related to previous Beacon restructuring charges for the periods indicated: (In millions) Employee Real Estate Asset and Other Write-offs Total Accrual Balance at December 31, 2016 $ 37 $ 17 $ 2 $ 56 Accruals for Beacon 186 32 27 245 Payments and Other Adjustments (57 ) (17 ) (26 ) (100 ) Accrual Balance at December 31, 2017 166 32 3 201 Accruals for Beacon (7 ) — — (7 ) Accruals for Repositioning Charges 259 41 — 300 Payments and Other Adjustments (115 ) (36 ) (2 ) (153 ) Accrual Balance at December 31, 2018 303 37 1 341 Accruals for Beacon (2 ) — — (2 ) Accruals for Repositioning Charges 98 12 — 110 Payments and Other Adjustments (209 ) (42 ) — (251 ) Accrual Balance at December 31, 2019 $ 190 $ 7 $ 1 $ 198

Income Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We use an asset-and-liability approach to account for income taxes. Our objective is to recognize the amount of taxes payable or refundable for the current year through charges or credits to the current tax provision, and to recognize deferred tax assets and liabilities for future tax consequences of temporary differences between amounts reported in our consolidated financial statements and their respective tax bases. The measurement of tax assets and liabilities is based on enacted tax laws and applicable tax rates. The effects of a tax position on our consolidated financial statements are recognized when we believe it is more likely than not that the position will be sustained. A valuation allowance is established if it is considered more likely than not that all or a portion of the deferred tax assets will not be realized. Deferred tax assets and liabilities recorded in our consolidated statement of condition are netted within the same tax jurisdiction. The following table presents the components of income tax expense (benefit) for the periods indicated: Years Ended December 31, (In millions) 2019 2018 2017 Current: Federal $ 157 $ 122 $ 343 State 86 148 24 Non-U.S. 357 374 380 Total current expense 600 644 747 Deferred: Federal (6 ) (128 ) 45 State 33 (22 ) 66 Non-U.S. (157 ) 14 (19 ) Total deferred expense (benefit) (130 ) (136 ) 92 Total income tax expense (benefit) $ 470 $ 508 $ 839 The following table presents a reconciliation of the U.S. statutory income tax rate to our effective tax rate based on income before income tax expense for the periods indicated: Years Ended December 31, 2019 2018 2017 U.S. federal income tax rate 21.0 % 21.0 % 35.0 % Changes from statutory rate: State taxes, net of federal benefit 3.4 3.1 2.0 Tax-exempt income (1.5 ) (2.0 ) (4.3 ) Business tax credits (1) (5.4 ) (4.1 ) (3.7 ) Foreign tax differential (0.1 ) (0.6 ) (7.2 ) Foreign legal entity restructuring (4.3 ) — — Foreign tax credit limitations 2.2 0.2 — Transition tax — — 15.2 Deferred tax revaluation — (1.0 ) (6.8 ) Foreign designated earnings — — (0.7 ) Litigation expense 1.6 0.3 — Other, net 0.4 (0.6 ) (1.6 ) Effective tax rate 17.3 % 16.3 % 27.9 % (1) Business tax credits include low-income housing, production and investment tax credits. The 2017 income tax expense included a net provisional estimate of $257 million attributable to the enactment of TCJA (H.R.1). As of December 31, 2018 , the accounting for income tax effects of the TCJA was completed and the 2018 income tax expense included an additional deferred tax benefit of approximately $32 million . Beginning in 2018 , the TCJA subjects a U.S. shareholder to current tax on GILTI earned by certain foreign subsidiaries. We have elected to recognize the resulting tax on GILTI as a period expense in the period the tax is incurred. As such, we have included an estimate of this liability in our estimated annual effective tax rate. This adjustment increased our effective tax rate by 0.3% and 0.2% in 2019 and 2018 , respectively, which is reflected in the prior reconciliation table under "Foreign Tax Credit Limitations". Undistributed indefinitely reinvested earnings of certain foreign subsidiaries amounted to approximately $4.1 billion at December 31, 2019 . As a result, no provision has been recorded for state and local or foreign withholding income taxes. If a distribution were to occur, we would be subject to state, local and to foreign withholding tax. It is expected that any distribution will be exempt from federal income tax. Although the foreign withholding tax is generally creditable against U.S. federal income tax, certain credit utilization limitations may result in a net cost. The following table presents significant components of our gross deferred tax assets and gross deferred tax liabilities as of the dates indicated: December 31, (In millions) 2019 2018 Deferred tax assets: Other amortizable assets $ 394 $ 49 Tax credit carryforwards 387 274 Lease obligations 254 — Deferred compensation 120 134 Restructuring charges and other reserves 104 156 NOL and other carryforwards 73 104 Pension plan 66 55 Foreign currency translation 57 50 Unrealized losses on investment securities, net — 146 Total deferred tax assets 1,455 968 Valuation allowance for deferred tax assets (330 ) (138 ) Deferred tax assets, net of valuation allowance $ 1,125 $ 830 Deferred tax liabilities: Fixed and intangible assets $ 763 $ 744 Investment basis differences 258 229 Right-of-use Assets 223 — Unrealized gains on investment securities, net 86 — Other 32 11 Total deferred tax liabilities $ 1,362 $ 984 The table below summarizes the deferred tax assets and related valuation allowances recognized as of December 31, 2019 : (In millions) Deferred Tax Asset Valuation Allowance Expiration Other amortizable assets $ 394 $ (243 ) __ Tax credits 387 (29 ) 2029-2039 NOLs - Non-U.S. 33 (18 ) 2020-2028, None Other carryforwards 27 (27 ) None NOLs - State 13 (13 ) 2020-2039 Management considers the valuation allowance adequate to reduce the total deferred tax assets to an aggregate amount that will more likely than not be realized. Management has determined that a valuation allowance is not required for the remaining deferred tax assets because it is more likely than not that there is sufficient taxable income of the appropriate nature within the carryforward periods to realize these assets. At December 31, 2019 , 2018 and 2017 , the gross unrecognized tax benefits, excluding interest, were $149 million , $108 million and $94 million , respectively. Of this, the amounts that would reduce the effective tax rate, if recognized, are $140 million , $100 million and $ 87 million , respectively. The reduction in the effective tax rate includes the federal benefit for unrecognized state tax benefits. The following table presents activity related to unrecognized tax benefits as of the dates indicated: December 31, (In millions) 2019 2018 2017 Beginning balance $ 108 $ 94 $ 71 Decrease related to agreements with tax authorities (17 ) (40 ) (14 ) Increase related to tax positions taken during current year 13 12 26 Increase related to tax positions taken during prior years 49 44 11 Decreases related to a lapse of the applicable statute of limitations (4 ) (2 ) — Ending balance $ 149 $ 108 $ 94 It is reasonably possible that of the $149 million of unrecognized tax benefits as of December 31, 2019 , up to $4 million could decrease within the next 12 months due to the resolution of various audits. Management believes that we have sufficient accrued liabilities as of December 31, 2019 for tax exposures and related interest expense. Income tax expense included related interest and penalties of approximately $5 million and $1 million in 2019 and 2018 , respectively. Total accrued interest and penalties were approximately $10 million , $8 million and $8 million as of December 31, 2019 , 2018 and 2017 , respectively.

Earnings Per Common Share

Earnings Per Common Share	12 Months Ended
Earnings Per Common Share	Dec. 31, 2019
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share Basic EPS is calculated pursuant to the two-class method, by dividing net income available to common shareholders by the weighted-average common shares outstanding during the period. Diluted EPS is calculated pursuant to the two-class method, by dividing net income available to common shareholders by the total weighted-average number of common shares outstanding for the period plus the shares representing the dilutive effect of equity-based awards. The effect of equity-based awards is excluded from the calculation of diluted EPS in periods in which their effect would be anti-dilutive. The two-class method requires the allocation of undistributed net income between common and participating shareholders. Net income available to common shareholders, presented separately in our consolidated statement of income, is the basis for the calculation of both basic and diluted EPS. Participating securities are composed of unvested and fully vested SERP shares and fully vested deferred director stock awards, which are equity-based awards that contain non-forfeitable rights to dividends, and are considered to participate with the common stock in undistributed earnings. The following table presents the computation of basic and diluted earnings per common share for the periods indicated: Years Ended December 31, (Dollars in millions, except per share amounts) 2019 2018 2017 Net income $ 2,242 $ 2,593 $ 2,156 Less: Preferred stock dividends (232 ) (188 ) (182 ) Dividends and undistributed earnings allocated to participating securities (1) (1 ) (1 ) (2 ) Net income available to common shareholders $ 2,009 $ 2,404 $ 1,972 Average common shares outstanding (In thousands): Basic average common shares 369,911 371,983 374,793 Effect of dilutive securities: equity-based awards 3,755 4,493 5,420 Diluted average common shares 373,666 376,476 380,213 Anti-dilutive securities (2) 2,052 1,011 188 Earnings per common share: Basic $ 5.43 $ 6.46 $ 5.26 Diluted (3) 5.38 6.39 5.19 (1) Represents the portion of net income available to common equity allocated to participating securities, composed of unvested and fully vested SERP (Supplemental executive retirement plans) shares and fully vested deferred director stock awards, which are equity-based awards that contain non-forfeitable rights to dividends, and are considered to participate with the common stock in undistributed earnings. (2) Represents equity-based awards outstanding but not included in the computation of diluted average common shares, because their effect was anti-dilutive. Additional information about equity-based awards is provided in Note 18 . (3) Calculations reflect allocation of earnings to participating securities using the two-class method, as this computation is more dilutive than the treasury stock method.

Line of Business Information

Line of Business Information	12 Months Ended
Line of Business Information	Dec. 31, 2019
Segment Reporting [Abstract]
Line of Business Information	Line of Business Information Our operations are organized into two lines of business: Investment Servicing and Investment Management, which are defined based on products and services provided. The results of operations for these lines of business are not necessarily comparable with those of other companies, including companies in the financial services industry. Investment Servicing, through State Street Global Services, State Street Global Markets, State Street Global Exchange and CRD, provides services for U.S. mutual funds, collective investment funds and other investment pools, corporate and public retirement plans, insurance companies, foundations and endowments worldwide. Products include: custody; product and participant level accounting; daily pricing and administration; master trust and master custody; depotbank services (a fund oversight role created by non-U.S. regulation); record-keeping; cash management; foreign exchange, brokerage and other trading services; securities finance and enhanced custody products; deposit and short-term investment facilities; loans and lease financing; investment manager and alternative investment manager operations outsourcing; performance, risk and compliance analytics; and financial data management to support institutional investors. Our CRD business also falls within our Investment Servicing line of business and includes products and services, such as: portfolio modeling and construction; trade order management; investment risk and compliance; and wealth management solutions. Investment Management , through State Street Global Advisors, provides a broad range of investment management strategies and products for our clients. Our investment management strategies and products span the risk/reward spectrum, including core and enhanced indexing, multi-asset strategies, active quantitative and fundamental active capabilities and alternative investment strategies. Our AUM is currently primarily weighted to indexed strategies. In addition, we provide a breadth of services and solutions, including environmental, social and governance investing, defined benefit and defined contribution and Global Fiduciary Solutions (formerly Outsourced Chief Investment Officer). State Street Global Advisors is also a provider of ETFs, including the SPDR ® ETF brand. While management fees are primarily determined by the values of AUM and the investment strategies employed, management fees reflect other factors as well, including the benchmarks specified in the respective management agreements related to performance fees. Our investment servicing strategy is to focus on total client relationships and the full integration of our products and services across our client base through cross-selling opportunities. In general, our clients will use a combination of services, depending on their needs, rather than one product or service. For instance, a custody client may purchase securities finance and cash management services from different business units. Products and services that we provide to our clients are parts of an integrated offering to these clients. We price our products and services on the basis of overall client relationships and other factors; as a result, revenue may not necessarily reflect the stand-alone market price of these products and services within the business lines in the same way it would for separate business entities. Our servicing and management fee revenue from the Investment Servicing and Investment Management business lines, including foreign exchange trading services and securities finance activities, represents approximately 70% to 80% of our consolidated total revenue. The remaining 20% to 30% is composed of software and processing fees, including CRD, as well as NII, which is largely generated by our investment of client deposits, short-term borrowings and long-term debt in a variety of assets, and net gains (losses) related to investment securities. These other revenue types are generally fully allocated to, or reside in, Investment Servicing and Investment Management. Revenue and expenses are directly charged or allocated to our lines of business through management information systems. Assets and liabilities are allocated according to policies that support management’s strategic and tactical goals. Capital is allocated based on the relative risks and capital requirements inherent in each business line, along with management judgment. Capital allocations may not be representative of the capital that might be required if these lines of business were separate business entities. The following is a summary of our line of business results for the periods indicated. The “Other” column for the year ended December 31, 2019 included net costs of $359 million composed of the following: • Net acquisition and restructuring costs of $77 million ; • Net repositioning charges of $110 million ; and • Legal and related expenses of $172 million . The “Other” column for the year ended December 31, 2018 included net costs of $398 million composed of the following: • Net repositioning charges related to organizational changes and management streamlining of $300 million ; • Business exit costs of $24 million ; • Legal and related expenses of $50 million ; and • Net acquisition and restructuring costs of $24 million . The "Other" column for the year ended December 31, 2017 included net acquisition and restructuring costs of $266 million . The following is a summary of our line of business results for the periods indicated. The amounts in the “Other” columns were not allocated to our business lines. Prior reported results reflect reclassifications, for comparative purposes, related to management changes in methodologies associated with allocations of revenue and expenses to lines of business in 2019 . Years Ended December 31, Investment Investment Other Total (Dollars in millions) 2019 2018 2017 2019 2018 2017 2019 2018 2017 2019 2018 2017 Servicing fees $ 5,074 $ 5,429 $ 5,365 $ — $ — $ — $ — $ (8 ) $ — $ 5,074 $ 5,421 $ 5,365 Management fees — — — 1,771 1,851 1,616 — — — 1,771 1,851 1,616 Foreign exchange trading services 974 1,071 999 137 130 72 — — — 1,111 1,201 1,071 Securities finance 462 543 606 9 — — — — — 471 543 606 Software and processing fees (1)(2) 691 443 336 29 (5 ) 7 — — — 720 438 343 Total fee revenue (1) 7,201 7,486 7,306 1,946 1,976 1,695 — (8 ) — 9,147 9,454 9,001 Net interest income 2,590 2,691 2,309 (24 ) (20 ) (5 ) — — — 2,566 2,671 2,304 Total other income 43 6 (39 ) — — — — — — 43 6 (39 ) Total revenue (1) 9,834 10,183 9,576 1,922 1,956 1,690 — (8 ) — 11,756 12,131 11,266 Provision for loan losses 10 15 2 — — — — — — 10 15 2 Total expenses (1) 7,140 7,081 6,717 1,535 1,544 1,286 359 390 266 9,034 9,015 8,269 Income before income tax expense $ 2,684 $ 3,087 $ 2,857 $ 387 $ 412 $ 404 $ (359 ) $ (398 ) $ (266 ) $ 2,712 $ 3,101 $ 2,995 Pre-tax margin 27 % 30 % 30 % 20 % 21 % 24 % 23 % 26 % 27 % Average assets (in billions) $ 220.3 $ 220.2 $ 214.0 $ 3.0 $ 3.2 $ 5.4 $ 223.3 $ 223.4 $ 219.4 (1) Investment Servicing includes results from our acquisition of CRD on October 1, 2018. (2) Investment Management includes other revenue items that are primarily driven by equity market movements.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	12 Months Ended
Revenue from Contracts with Customers	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	Revenue from Contracts with Customers We account for revenue from contracts with customers in accordance with Topic 606, which we adopted on January 1, 2018. The amount of revenue that we recognize is measured based on the consideration specified in contracts with our customers, and excludes taxes collected from customers subsequently remitted to governmental authorities. We recognize revenue when a performance obligation is satisfied over time as the services are performed or at a point in time depending on the nature of the services provided as further discussed below. Revenue recognition guidance related to contracts with customers excludes our NII, revenue earned on security lending transactions entered into as principal, realized gains/losses on securities, revenue earned on foreign exchange activity, loans and related fees, and gains/losses on hedging and derivatives, to which we apply other applicable U.S. GAAP guidance. For contracts with multiple performance obligations, or contracts that have been combined, we allocate the contracts' transaction price to each performance obligation using our best estimate of the standalone selling price. Our contractual fees are negotiated on a customer by customer basis and are representative of standalone selling price utilized for allocating revenue when there are multiple performance obligations. Substantially all of our services are provided as a distinct series of daily performance obligations that the customer simultaneously benefits from as they are performed. Payments may be made to third party service providers and the expense is recognized gross when we control those services as we are deemed the principal. Contract durations may vary from short to long- term or may be open ended. Termination notice periods are in line with general market practice and typically do not include termination penalties. Therefore, for substantially all of our revenues, the duration of the contract and the enforceable rights and obligations do not extend beyond the services that are performed daily or at the transaction level. In instances where we have substantive termination penalties, the duration of the contract may extend through the date of substantive termination penalties. Investment Servicing Revenue from contracts with customers related to servicing fees is recognized over time as our customers benefit from the custody, administration, accounting, transfer agency and other related asset services as they are performed. At contract inception, no revenue is estimated as the fees are dependent on assets under custody and/or administration and/or actual transactions which are susceptible to market factors outside of our control. Therefore, revenue is recognized using a time-based output method as the customers benefit from the services over time and as the assets under custody or transactions are known or determinable during each reporting period based on contractual fee schedules. Payments made to third party service providers, such as sub-custodians, are generally recognized gross as we control those services and is deemed to be a principal in such arrangements. Foreign exchange trading services revenue includes revenue generated from providing access and use of electronic trading platforms and other trading, transition management and brokerage services. Electronic FX services are dependent on the volume of actual transactions initiated through our electronic exchange platforms. Revenue is recognized over time using a time-based measure as access to, and use of, the electronic exchange platforms is made available to the customer and the activity is determinable. Revenue related to other trading, transition management and brokerage services is recognized when the customer obtains the benefit of such services which may be over time or at a point in time upon trade execution. Securities finance revenue is related to services for providing agency lending programs to State Street Global Advisors managed investment funds and third- party investment managers and asset owners. This securities finance revenue is recognized over time using a time-based measure as our customers benefit from these lending services over time. Revenue related to the front office solutions provided by CRD is primarily driven by the sale of software to be installed on premise and Software as a Service (SaaS) arrangements, where the customer does not take possession of the software. Revenue for a sale of software to be installed on premise is recognized at a point in time when the customer benefits from obtaining access to and use of the software license. Revenue for a SaaS related arrangement is recognized over time as services are provided. Investment Management Revenue from contracts with customers related to investment management, investment research and investment advisory services provided through State Street Global Advisors is recognized over time as our customers benefit from the services as they are performed. Substantially all of our investment management fees are determined by the value of assets under management and the investment strategies employed. At contract inception, no revenue is estimated as the fees are dependent on assets under management which are susceptible to market factors outside of our control. Therefore, substantially all of our Investment Management services revenue is recognized using a time-based output method as the customers benefit from the services over time and as the assets under management are known or determinable during each reporting period based on contractual fee schedules. Payments made to third party service providers, such as payments to others in unitary fee arrangements, are generally recognized on a gross basis when State Street Global Advisors controls those services and is deemed to be a principal in such transactions. Revenue by category In the following table, revenue is disaggregated by our two lines of business and by revenue stream for which the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. The amounts in the "Other" columns were not allocated to our business lines. Year Ended December 31, 2019 Investment Servicing Investment Management Other Total (Dollars in millions) Topic 606 revenue All other revenue Total Topic 606 revenue All other revenue Total Topic 606 revenue All other revenue Total 2019 Servicing fees $ 5,074 $ — $ 5,074 $ — $ — $ — $ — $ — $ — $ 5,074 Management fees — — — 1,771 — 1,771 — — — 1,771 Foreign exchange trading services 346 628 974 137 — 137 — — — 1,111 Securities finance 259 203 462 — 9 9 — — — 471 Software and processing fees 456 235 691 — 29 29 — — — 720 Total fee revenue 6,135 1,066 7,201 1,908 38 1,946 — — — 9,147 Net interest income — 2,590 2,590 — (24 ) (24 ) — — — 2,566 Total other income — 43 43 — — — — — — 43 Total revenue $ 6,135 $ 3,699 $ 9,834 $ 1,908 $ 14 $ 1,922 $ — $ — $ — $ 11,756 Year Ended December 31, 2018 Investment Servicing Investment Management Other Total (Dollars in millions) Topic 606 revenue All other revenue Total Topic 606 revenue All other revenue Total Topic 606 revenue All other revenue Total 2018 Servicing fees $ 5,429 $ — $ 5,429 $ — $ — $ — $ (8 ) $ — $ (8 ) $ 5,421 Management fees — — — 1,851 — 1,851 — — — 1,851 Foreign exchange trading services 361 710 1,071 130 — 130 — — — 1,201 Securities finance 308 235 543 — — — — — — 543 Software and processing fees 209 234 443 — (5 ) (5 ) — — — 438 Total fee revenue 6,307 1,179 7,486 1,981 (5 ) 1,976 (8 ) — (8 ) 9,454 Net interest income — 2,691 2,691 — (20 ) (20 ) — — — 2,671 Total other income — 6 6 — — — — — — 6 Total revenue $ 6,307 $ 3,876 $ 10,183 $ 1,981 $ (25 ) $ 1,956 $ (8 ) $ — $ (8 ) $ 12,131 Contract balances and contract costs A s of December 31, 2019 and December 31, 2018 , net receivables of $2.77 billion and $2.75 billion , respectively, are included in accrued interest and fees receivable, representing amounts billed or currently billable related to revenue from contracts with customers. As performance obligations are satisfied, we have an unconditional right to payment and billing is generally performed monthly; therefore, we do not have significant contract assets or liabilities. No adjustments are made to the promised amount of consideration for the effects of a significant financing component as the period between when we transfer a promised service to a customer and when the customer pays for that service is expected to be one year or less.

Non-U.S. Activities

Non-U.S. Activities	12 Months Ended
Non-U.S. Activities	Dec. 31, 2019
Segments, Geographical Areas [Abstract]
Non-U.S. Activities	Non-U.S. Activities We define our non-U.S. activities as those revenue-producing business activities that arise from clients which are generally serviced or managed outside the U.S. Due to the integrated nature of our business, precise segregation of our U.S. and non-U.S. activities is not possible. Subjective estimates, assumptions and other judgments are applied to quantify the financial results and assets related to our non-U.S. activities, including our application of funds transfer pricing, our asset and liability management policies and our allocation of certain indirect corporate expenses. Management periodically reviews and updates its processes for quantifying the financial results and assets related to our non-U.S. activities. The following table presents our U.S. and non-U.S. financial results for the periods indicated: Years Ended December 31, 2019 2018 2017 (In millions) Non-U.S. (1) U.S. Total Non-U.S. (1) U.S. Total Non-U.S. (1) U.S. Total Total revenue $ 4,974 $ 6,782 $ 11,756 $ 5,190 $ 6,941 $ 12,131 $ 4,734 $ 6,532 $ 11,266 Income before income tax expense 1,159 1,553 2,712 1,294 1,807 3,101 1,230 1,765 2,995 (1) Geographic mix is generally based on the domicile of the entity servicing the funds and is not necessarily representative of the underlying asset mix. Non-U.S. assets were $83.28 billion and $81.69 billion as of December 31, 2019 and 2018 , respectively.

Parent Company Financial Statem

Parent Company Financial Statements	12 Months Ended
Parent Company Financial Statements	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
Parent Company Financial Statements	Parent Company Financial Statements The following tables present the financial statements of the Parent Company without consolidation of its banking and non-banking subsidiaries, as of and for the years indicated: Statement of Income - Parent Company Years Ended December 31, (In millions) 2019 2018 2017 Cash dividends from consolidated banking subsidiary $ 3,300 $ 785 $ 2,224 Cash dividends from consolidated non-banking subsidiaries and unconsolidated entities 285 41 12 Other, net 149 58 127 Total revenue 3,734 884 2,363 Interest expense 415 381 297 Other expenses 108 162 94 Total expenses 523 543 391 Income tax (benefit) (91 ) (127 ) (86 ) Income before equity in undistributed income of consolidated subsidiaries and unconsolidated entities 3,302 468 2,058 Equity in undistributed income of consolidated subsidiaries and unconsolidated entities: Consolidated banking subsidiary (1,070 ) 1,944 (1 ) Consolidated non-banking subsidiaries and unconsolidated entities 10 181 99 Net income $ 2,242 $ 2,593 $ 2,156 Statement of Condition - Parent Company As of December 31, (In millions) 2019 2018 Assets: Interest-bearing deposits with consolidated banking subsidiary $ 428 $ 486 Trading account assets 393 357 Investment securities available-for-sale 250 224 Investments in subsidiaries: Consolidated banking subsidiary 25,451 25,966 Consolidated non-banking subsidiaries 7,240 6,726 Unconsolidated entities 117 106 Notes and other receivables from: Consolidated banking subsidiary — 64 Consolidated non-banking subsidiaries and unconsolidated entities 3,361 2,337 Other assets 270 96 Total assets $ 37,510 $ 36,362 Liabilities: Accrued expenses and other liabilities $ 696 $ 685 Long-term debt 12,383 10,940 Total liabilities 13,079 11,625 Shareholders’ equity 24,431 24,737 Total liabilities and shareholders’ equity $ 37,510 $ 36,362 Statement of Cash Flows - Parent Company Years Ended December 31, (In millions) 2019 2018 2017 Net cash provided by operating activities $ 2,684 $ 2,250 $ 2,047 Investing Activities: Net decrease (increase) in interest-bearing deposits with consolidated banking subsidiary 58 46 3,103 Proceeds from sales and maturities of available-for-sale securities 900 — — Purchases of available-for-sale securities (921 ) (224 ) — Investments in consolidated banking and non-banking subsidiaries (6,165 ) (4,883 ) (7,672 ) Sale or repayment of investment in consolidated banking and non-banking subsidiaries 5,345 2,472 4,216 Net increase in investments in unconsolidated affiliates — — 172 Net cash (used in) provided by investing activities (783 ) (2,589 ) (181 ) Financing Activities: Proceeds from issuance of long-term debt, net of issuance costs 1,495 996 748 Payments for long-term debt (50 ) (1,000 ) (450 ) Proceeds from issuance of preferred stock, net of issuance costs — 495 — Proceeds from issuance of common stock, net of issuance costs — 1,150 — Payments for redemption of preferred stock (750 ) — — Repurchases of common stock (1,585 ) (350 ) (1,292 ) Repurchases of common stock for employee tax withholding (81 ) (124 ) (104 ) Payments for cash dividends (930 ) (828 ) (768 ) Net cash provided (used in) financing activities (1,901 ) 339 (1,866 ) Net change — — — Cash and due from banks at beginning of year — — — Cash and due from banks at end of year $ — $ — $ —

Subsequent Events

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On January 24, 2020, we issued $750 million aggregate principal amount of 2.400% Senior Notes due 2030 in a public offering. On February 12, 2020, we announced that we will redeem all 5,000 of our outstanding shares of our non-cumulative perpetual preferred stock, Series C, for cash at a redemption price of $100,000 per share (equivalent to $25.00 per depositary share) plus all declared and unpaid dividends. The redemption price will be payable on March 16, 2020, and this redemption will be reflected in our first quarter 2020 results of operations.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2019
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accounting and financial reporting policies of State Street Corporation conform to U.S. GAAP. State Street Corporation, the Parent Company, is a financial holding company headquartered in Boston, Massachusetts. Unless otherwise indicated or unless the context requires otherwise, all references in these notes to consolidated financial statements to “State Street,” “we,” “us,” “our” or similar references mean State Street Corporation and its subsidiaries on a consolidated basis, including our principal banking subsidiary, State Street Bank. We have two lines of business: Investment Servicing provides a suite of related products and services including: custody; product and participant level accounting; daily pricing and administration; master trust and master custody; depotbank services (a fund oversight role created by non-U.S. regulation); record-keeping; cash management; foreign exchange, brokerage and other trading services; securities finance and enhanced custody products; deposit and short-term investment facilities; loans and lease financing; investment manager and alternative investment manager operations outsourcing; performance, risk and compliance analytics; and financial data management to support institutional investors. Our CRD business also falls within our Investment Servicing line of business and includes products and services, such as: portfolio modeling and construction; trade order management; investment risk and compliance; and wealth management solutions. Investment Management , through State Street Global Advisors, provides a broad range of investment management strategies and products for our clients. Our investment management strategies and products span the risk/reward spectrum, including core and enhanced indexing, multi-asset strategies, active quantitative and fundamental active capabilities and alternative investment strategies. Our AUM is currently primarily weighted to indexed strategies. In addition, we provide a breadth of services and solutions, including environmental, social and governance investing, defined benefit and defined contribution and Global Fiduciary Solutions (formerly Outsourced Chief Investment Officer). State Street Global Advisors is also a provider of ETFs, including the SPDR ® ETF brand. While management fees are primarily determined by the values of AUM and the investment strategies employed, management fees reflect other factors as well, including the benchmarks specified in the respective management agreements related to performance fees.
Consolidation	Consolidation Our consolidated financial statements include the accounts of the Parent Company and its majority- and wholly-owned and otherwise controlled subsidiaries, including State Street Bank. All material inter-company transactions and balances have been eliminated. Certain previously reported amounts have been reclassified to conform to current-year presentation. We consolidate subsidiaries in which we exercise control. Investments in unconsolidated subsidiaries, recorded in other assets, generally are accounted for under the equity method of accounting if we have the ability to exercise significant influence over the operations of the investee. For investments accounted for under the equity method, our share of income or loss is recorded in software and processing fees in our consolidated statement of income. Investments not meeting the criteria for equity-method treatment are measured at fair value through earnings, except for investments where a fair market value is not readily available, which are accounted for under the cost method of accounting.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions in the application of certain of our significant accounting policies that may materially affect the reported amounts of assets, liabilities, equity, revenue and expenses. As a result of unanticipated events or circumstances, actual results could differ from those estimates.
Foreign Currency Translation	Foreign Currency Translation The assets and liabilities of our operations with functional currencies other than the U.S. dollar are translated at month-end exchange rates, and revenue and expenses are translated at rates that approximate average monthly exchange rates. Gains or losses from the translation of the net assets of subsidiaries with functional currencies other than the U.S. dollar, net of related taxes, are recorded in AOCI, a component of shareholders’ equity.
Cash and Cash Equivalents	Cash and Cash Equivalents For purposes of the consolidated statement of cash flows, cash and cash equivalents are defined as cash and due from banks.
Interest-Bearing Deposits with Banks	Interest-Bearing Deposits with Banks Interest-bearing deposits with banks generally consist of highly liquid, short-term investments maintained at the Federal Reserve Bank and other non-U.S. central banks with original maturities at the time of purchase of one month or less.
Securities Purchased Under Resale Agreements and Securities Sold Under Repurchase Agreements	Securities Purchased Under Resale Agreements and Securities Sold Under Repurchase Agreements Securities purchased under resale agreements and sold under repurchase agreements are treated as collateralized financing transactions, and are recorded in our consolidated statement of condition at the amounts at which the securities will be subsequently resold or repurchased, plus accrued interest. Our policy is to take possession or control of securities underlying resale agreements either directly or through agent banks, allowing borrowers the right of collateral substitution and/or short-notice termination. We revalue these securities daily to determine if additional collateral is necessary from the borrower to protect us against credit exposure. We can use these securities as collateral for repurchase agreements. For securities sold under repurchase agreements collateralized by our investment securities portfolio, the dollar value of the securities remains in investment securities in our consolidated statement of condition. Where a master netting agreement exists or both parties are members of a common clearing organization, resale and repurchase agreements with the same counterparty or clearing house and maturity date are recorded on a net basis.
Fee and Net Interest Income	Fee and Net Interest Income The majority of fees from investment servicing, investment management, securities finance, trading services and certain types of software and processing fees are recorded in our consolidated statement of income based on the consideration specified in contracts with our customers, and excludes taxes collected from customers subsequently remitted to governmental authorities. We recognize revenue as the services are performed or at a point in time depending on the nature of the services provided. Payments made to third party service providers are generally recognized on a gross basis when we control those services and are deemed to be the principal. Additional information about revenue from contracts with customers is provided in Note 25. Interest income on interest-earning assets and interest expense on interest-bearing liabilities are recorded in our consolidated statement of income as components of NII, and are generally based on the effective yield of the related financial asset or liability.
Recent Accounting Developments	Recent Accounting Developments Relevant standards that were recently issued but not yet adopted as of December 31, 2019: Standard Description Date of Adoption Effects on the financial statements or other significant matters ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments The standard, and its related amendments, replaces the existing incurred loss impairment guidance and requires immediate recognition of expected credit losses for financial assets carried at amortized cost, including trade and other receivables, loans and commitments, held-to-maturity debt securities and other financial assets, held at the reporting date to be measured based on historical experience, current conditions and reasonable supportable forecasts. The standard also amends existing impairment guidance for available-for-sale securities, and credit losses will be recorded as an allowance versus a write-down of the amortized cost basis of the security and will allow for a reversal of impairment loss when the credit of the issuer improves. The guidance requires a cumulative effect of initial application to be recognized in retained earnings at the date of initial application. January 1, 2020 We have assessed the impact of the standard on our consolidated financial statements. We established a steering committee which provided cross-functional governance over the project plan and key decisions. Key accounting policies were enhanced and we refined the credit loss models, processes and the associated data requirements needed to meet the standard. The majority of our exposures utilize a probability-of-default and loss-given-default methodology to estimate the credit loss reserve. Our senior secured loan portfolio remains a major driver of the allowance for credit loss, along with off-balance sheet commitments. There was no material allowance upon implementation for held-to-maturity exposures given the nature of our portfolio. Our credit loss models were approved for use by our Model Validation Group in 2019. We executed our new processes in parallel with the existing processes during 2019 to ensure that we have an appropriate control environment over the allowance for credit losses upon adoption in 2020. Upon adoption of the new guidance on January 1, 2020, no material adjustment to retained earnings was required. ASU 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment The standard simplifies the subsequent measurement of goodwill by eliminating Step 2 from the goodwill impairment test. The ASU requires an entity to compare the fair value of a reporting unit with its carrying amount and recognize an impairment charge for the amount by which the carrying value exceeds the fair value of the reporting unit. Additionally, an entity should consider income tax effects from any tax deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss. January 1, 2020 We have adopted the new standard as of January 1, 2020 prospectively. There are no material impacts as a result of the adoption. ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement The standard eliminates, amends and adds disclosure requirements for fair value measurements. January 1, 2020 We have elected to early adopt the provisions of the new standard that eliminate or amend disclosures as of December 31, 2018 and our disclosures were modified accordingly. The remaining provisions of the standard that add disclosures have been adopted from January 1, 2020 and applied prospectively. ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement. That Is a Service Contract (a consensus of the Financial Accounting Standards Board Emerging Issues Task Force) This standard addresses accounting for fees paid by a customer for implementation, set-up and other upfront costs incurred in a cloud computing arrangement that is hosted by the vendor, i.e., a service contract. The new guidance aligns treatment for capitalization of implementation costs with guidance on internal-use software. January 1, 2020 We have adopted the new standard prospectively as of January 1, 2020. There are no material impacts as a result of the adoption. Relevant standards that were adopted in 2019: We adopted ASU 2016-02, Leases (Topic 842) and relevant amendments, effective January 1, 2019. The standard represents a change to lease accounting and requires all leases, other than short-term leases, to be reported on the balance sheet through recognition of a right-of-use asset and a corresponding liability for future lease obligations. The standard also requires incremental disclosures for assets, expenses, and cash flows associated with leases, as well as a maturity analysis of lease liabilities. We adopted Topic 842 by applying the transition method whereby comparative periods have not been restated, and no adjustment to retained earnings was required. Upon adoption of the standard, we recognized right-of-use assets of approximately $0.9 billion and lease liabilities of approximately $1.1 billion . This increase largely relates to the present value of future minimum lease payments due under existing operating leases of office space. There were no material changes to the recognition of lease expenses in the Consolidated Statement of Income as a result of the adoption of Topic 842. For adoption, we elected Topic 842’s package of three practical expedients, and (1) did not reassess whether any expired or existing contracts are or contain leases, (2) did not reassess the lease classification for any expired or existing leases, and (3) did not reassess initial direct costs for any existing leases. In addition, we made an accounting policy election not to apply the recognition requirements to short-term leases, and elected the practical expedient to not separate lease and nonlease components of leases. We adopted ASU 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities, effective January 1, 2019. The standard shortens the amortization period for certain purchased callable debt securities to the earliest call date. The standard does not impact debt securities which are held at a discount. The guidance requires a cumulative effect of initial application to be recognized in retained earnings at the beginning of the period of adoption. The impact to beginning retained earnings was not material. We adopted ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, effective January 1, 2019. This standard provides an election to reclassify the stranded tax effects resulting from the enactment of the Tax Cuts and Jobs Act of 2017, from accumulated other comprehensive income to retained earnings. Upon adoption of the standard we reclassified approximately $84 million of stranded tax effects. Change in Accounting Method During the first quarter of 2019, we voluntarily changed our accounting method under the FASB ASC 323, Investments - Equity Method and Joint Ventures , for investments in low income housing tax credit (LIHTC) from the equity method of accounting to the proportional amortization method of accounting. While both methods of accounting are acceptable under U.S. GAAP, we believe the proportional method is preferable because it more fairly represents the economics of LIHTC investments, which are made primarily for the purpose of receiving tax credits and other tax benefits. In addition, this method aligns to the method typically used by the companies within our industry which have similar investments. In addition to the change in the timing of the recognition of income on LIHTC investments, amortization of the LIHTC investments is now recorded fully within the Income tax expense (benefit) line instead of the software and processing fees line on the consolidated statements of operations. As part of our change in accounting, all prior periods were revised to reflect the change. Additional information about the effect of the changes on the financial statement line items for prior periods is provided by Exhibit 99.2 to our Current Report on Form 8-K filed with the SEC on May 2, 2019. Since the change in accounting method was effective in the first quarter of 2019 and the financial results under the equity method of accounting as compared to the proportional amortization method of accounting would not affect future management decisions, we did not undertake the operational effort and cost to maintain separate systems of record for the equity method of accounting to enable a calculation of the impact of the change subsequent to the first quarter of 2019. However, we estimate that software and processing fees and income tax expense (benefit) would have both been lower had we continued to use the equity method, resulting in an immaterial impact to net income and earnings per share.
Fair Value Measurements	Fair Value Measurements We carry trading account assets and liabilities, AFS debt securities, certain equity securities and various types of derivative financial instruments, at fair value in our consolidated statement of condition on a recurring basis. Changes in the fair values of these financial assets and liabilities are recorded either as components of our consolidated statement of income or as components of AOCI within shareholders' equity in our consolidated statement of condition. We measure fair value for the above-described financial assets and liabilities in conformity with U.S. GAAP that governs the measurement of the fair value of financial instruments. Management believes that its valuation techniques and underlying assumptions used to measure fair value conform to the provisions of U.S. GAAP. We categorize the financial assets and liabilities that we carry at fair value based on a prescribed three-level valuation hierarchy. The hierarchy gives the highest priority to quoted prices in active markets for identical assets or liabilities (level 1) and the lowest priority to valuation methods using significant unobservable inputs (level 3). If the inputs used to measure a financial asset or liability cross different levels of the hierarchy, categorization is based on the lowest-level input that is significant to the fair-value measurement. Management's assessment of the significance of a particular input to the overall fair-value measurement of a financial asset or liability requires judgment, and considers factors specific to that asset or liability. The three levels of the valuation hierarchy are described below. Level 1. Financial assets and liabilities with values based on unadjusted quoted prices for identical assets or liabilities in an active market. Our level 1 financial assets and liabilities primarily include positions in U.S. government securities and highly liquid U.S. and non-U.S. government fixed-income securities. Our level 1 financial assets also include actively traded exchange- traded equity securities. Level 2. Financial assets and liabilities with values based on quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the asset or liability. Level 2 inputs include the following: • Quoted prices for similar assets or liabilities in active markets; • Quoted prices for identical or similar assets or liabilities in non-active markets; • Pricing models whose inputs are observable for substantially the full term of the asset or liability; and • Pricing models whose inputs are derived principally from, or corroborated by, observable market information through correlation or other means for substantially the full term of the asset or liability. Our level 2 financial assets and liabilities primarily include non-U.S. debt securities carried in trading account assets and various types of fixed-income AFS investment securities, as well as various types of foreign exchange and interest rate derivative instruments. Fair value for our AFS investment securities categorized in level 2 is measured primarily using information obtained from independent third parties. This third-party information is subject to review by management as part of a validation process, which includes obtaining an understanding of the underlying assumptions and the level of market participant information used to support those assumptions. In addition, management compares significant assumptions used by third parties to available market information. Such information may include known trades or, to the extent that trading activity is limited, comparisons to market research information pertaining to credit expectations, execution prices and the timing of cash flows and, where information is available, back- testing. Derivative instruments categorized in level 2 predominantly represent foreign exchange contracts used in our trading activities, for which fair value is measured using discounted cash-flow techniques, with inputs consisting of observable spot and forward points, as well as observable interest rate curves. With respect to derivative instruments, we evaluate the impact on valuation of the credit risk of our counterparties. We consider factors such as the likelihood of default by our counterparties, our current and potential future net exposures and remaining maturities in determining the fair value. Valuation adjustments associated with derivative instruments were not material to those instruments for the years ended December 31, 2019 and 2018 . Level 3. Financial assets and liabilities with values based on prices or valuation techniques that require inputs that are both unobservable in the market and significant to the overall measurement of fair value. These inputs reflect management's judgment about the assumptions that a market participant would use in pricing the financial asset or liability, and are based on the best available information, some of which may be internally developed. The following provides a more detailed discussion of our financial assets and liabilities that we may categorize in level 3 and the related valuation methodology. • The fair value of our investment securities categorized in level 3 is measured using information obtained from third-party sources, typically non-binding broker/dealer quotes, or through the use of internally-developed pricing models. Management has evaluated its methodologies used to measure fair value and has considered the level of observable market information to be insufficient to categorize the securities in level 2. • The fair value of certain foreign exchange contracts, primarily options, is measured using an option-pricing model. Because of a limited number of observable transactions, certain model inputs are not observable, such as implied volatility surface, but are derived from observable market information. Our level 3 financial assets and liabilities are similar in structure and profile to our level 1 and level 2 financial instruments, but they trade in less liquid markets, and the measurement of their fair value is inherently less observable.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
Summary of Significant Accounting Policies (Tables)	Dec. 31, 2019
Accounting Policies [Abstract]
Other Significant Accounting Policies	The following table identifies our other significant accounting policies and the note and page where a detailed description of each policy can be found: Fair Value Note 2 Page 128 Investment Securities Note 3 Page 135 Loans Note 4 Page 141 Goodwill and Other Intangible Assets Note 5 Page 143 Derivative Financial Instruments Note 10 Page 147 Offsetting Arrangements Note 11 Page 152 Contingencies Note 13 Page 156 Variable Interest Entities Note 14 Page 158 Equity-Based Compensation Note 18 Page 164 Income Taxes Note 22 Page 168 Earnings Per Common Share Note 23 Page 169 Revenue from Contracts with Customers Note 25 Page 172
Recent Accounting Developments	Recent Accounting Developments Relevant standards that were recently issued but not yet adopted as of December 31, 2019: Standard Description Date of Adoption Effects on the financial statements or other significant matters ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments The standard, and its related amendments, replaces the existing incurred loss impairment guidance and requires immediate recognition of expected credit losses for financial assets carried at amortized cost, including trade and other receivables, loans and commitments, held-to-maturity debt securities and other financial assets, held at the reporting date to be measured based on historical experience, current conditions and reasonable supportable forecasts. The standard also amends existing impairment guidance for available-for-sale securities, and credit losses will be recorded as an allowance versus a write-down of the amortized cost basis of the security and will allow for a reversal of impairment loss when the credit of the issuer improves. The guidance requires a cumulative effect of initial application to be recognized in retained earnings at the date of initial application. January 1, 2020 We have assessed the impact of the standard on our consolidated financial statements. We established a steering committee which provided cross-functional governance over the project plan and key decisions. Key accounting policies were enhanced and we refined the credit loss models, processes and the associated data requirements needed to meet the standard. The majority of our exposures utilize a probability-of-default and loss-given-default methodology to estimate the credit loss reserve. Our senior secured loan portfolio remains a major driver of the allowance for credit loss, along with off-balance sheet commitments. There was no material allowance upon implementation for held-to-maturity exposures given the nature of our portfolio. Our credit loss models were approved for use by our Model Validation Group in 2019. We executed our new processes in parallel with the existing processes during 2019 to ensure that we have an appropriate control environment over the allowance for credit losses upon adoption in 2020. Upon adoption of the new guidance on January 1, 2020, no material adjustment to retained earnings was required. ASU 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment The standard simplifies the subsequent measurement of goodwill by eliminating Step 2 from the goodwill impairment test. The ASU requires an entity to compare the fair value of a reporting unit with its carrying amount and recognize an impairment charge for the amount by which the carrying value exceeds the fair value of the reporting unit. Additionally, an entity should consider income tax effects from any tax deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss. January 1, 2020 We have adopted the new standard as of January 1, 2020 prospectively. There are no material impacts as a result of the adoption. ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement The standard eliminates, amends and adds disclosure requirements for fair value measurements. January 1, 2020 We have elected to early adopt the provisions of the new standard that eliminate or amend disclosures as of December 31, 2018 and our disclosures were modified accordingly. The remaining provisions of the standard that add disclosures have been adopted from January 1, 2020 and applied prospectively. ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement. That Is a Service Contract (a consensus of the Financial Accounting Standards Board Emerging Issues Task Force) This standard addresses accounting for fees paid by a customer for implementation, set-up and other upfront costs incurred in a cloud computing arrangement that is hosted by the vendor, i.e., a service contract. The new guidance aligns treatment for capitalization of implementation costs with guidance on internal-use software. January 1, 2020 We have adopted the new standard prospectively as of January 1, 2020. There are no material impacts as a result of the adoption.

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
Fair Value (Tables)	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables present information with respect to our financial assets and liabilities carried at fair value in our consolidated statement of condition on a recurring basis as of the dates indicated: Fair Value Measurements on a Recurring Basis As of December 31, 2019 (In millions) Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) Impact of Netting (1) Total Net Carrying Value in Consolidated Statement of Condition Assets: Trading account assets: U.S. government securities $ 34 $ — $ — $ 34 Non-U.S. government securities 146 173 — 319 Other 21 540 — 561 Total trading account assets 201 713 — 914 Available-for-sale investment securities: U.S. Treasury and federal agencies: Direct obligations 3,487 — — 3,487 Mortgage-backed securities — 17,838 — 17,838 Total U.S. Treasury and federal agencies 3,487 17,838 — 21,325 Asset-backed securities: Student loans — 531 — 531 Credit cards — 89 — 89 Collateralized loan obligations — — 1,820 1,820 Total asset-backed securities — 620 1,820 2,440 Non-U.S. debt securities: Mortgage-backed securities — 1,980 — 1,980 Asset-backed securities — 1,292 887 2,179 Government securities — 12,373 — 12,373 Other (2) — 8,613 45 8,658 Total non-U.S. debt securities — 24,258 932 25,190 State and political subdivisions — 1,783 — 1,783 Collateralized mortgage obligations — 104 — 104 Other U.S. debt securities — 2,973 — 2,973 Total available-for-sale investment securities 3,487 47,576 2,752 53,815 Other assets: Derivative instruments: Foreign exchange contracts — 15,136 4 $ (10,391 ) 4,749 Interest rate contracts — 8 — (4 ) 4 Total derivative instruments — 15,144 4 (10,395 ) 4,753 Other — 504 — — 504 Total assets carried at fair value $ 3,688 $ 63,937 $ 2,756 $ (10,395 ) $ 59,986 Liabilities: Accrued expenses and other liabilities: Trading account liabilities: Other $ 5 $ — $ — $ — $ 5 Derivative instruments: Foreign exchange contracts $ 3 $ 15,144 $ 3 $ (8,918 ) 6,232 Interest rate contracts 6 43 — (4 ) 45 Other derivative contracts — 182 — — 182 Total derivative instruments 9 15,369 3 (8,922 ) 6,459 Total liabilities carried at fair value $ 14 $ 15,369 $ 3 $ (8,922 ) $ 6,464 (1) Represents counterparty netting against level 2 financial assets and liabilities where a legally enforceable master netting agreement exists between us and the counterparty. Netting also reflects asset and liability reductions of $2.31 billion and $0.84 billion , respectively, for cash collateral received from and provided to derivative counterparties. (2) As of December 31, 2019 , the fair value of other non-U.S. debt securities included $5.50 billion of supranational and non-U.S. agency bonds , $1.78 billion of corporate bonds and $0.68 billion of covered bonds. Fair Value Measurements on a Recurring Basis As of December 31, 2018 (In millions) Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) Impact of Netting (1) Total Net Carrying Value in Consolidated Statement of Condition Assets: Trading account assets: U.S. government securities $ 34 $ — $ — $ 34 Non-U.S. government securities 146 179 — 325 Other — 501 — 501 Total trading account assets 180 680 — 860 Available-for-sale investment securities: U.S. Treasury and federal agencies: Direct obligations 1,039 — — 1,039 Mortgage-backed securities — 15,968 — 15,968 Total U.S. Treasury and federal agencies 1,039 15,968 — 17,007 Asset-backed securities: Student loans — 541 — 541 Credit cards — 583 — 583 Collateralized loan obligations — — 593 593 Total asset-backed securities — 1,124 593 1,717 Non-U.S. debt securities: Mortgage-backed securities — 1,682 — 1,682 Asset-backed securities — 943 631 1,574 Government securities — 12,793 — 12,793 Other (2) — 6,544 58 6,602 Total non-U.S. debt securities — 21,962 689 22,651 State and political subdivisions — 1,918 — 1,918 Collateralized mortgage obligations — 195 2 197 Other U.S. debt securities — 1,658 — 1,658 Total available-for-sale investment securities 1,039 42,825 1,284 45,148 Other assets: Derivative instruments: Foreign exchange contracts — 16,382 4 $ (11,210 ) 5,176 Interest rate contracts 13 — — — 13 Total derivative instruments 13 16,382 4 (11,210 ) 5,189 Other — 395 — — 395 Total assets carried at fair value $ 1,232 $ 60,282 $ 1,288 $ (11,210 ) $ 51,592 Liabilities: Accrued expenses and other liabilities: Derivative instruments: Foreign exchange contracts $ — $ 16,518 $ 4 $ (11,564 ) $ 4,958 Interest rate contracts — 71 — — 71 Other derivative contracts — 214 — — 214 Total derivative instruments — 16,803 4 (11,564 ) 5,243 Total liabilities carried at fair value $ — $ 16,803 $ 4 $ (11,564 ) $ 5,243 (1) Represents counterparty netting against level 2 financial assets and liabilities where a legally enforceable master netting agreement exists between us and the counterparty. Netting also reflects asset and liability reductions of $0.99 billion and $1.34 billion , respectively, for cash collateral received from and provided to derivative counterparties. (2) As of December 31, 2018 , the fair value of other non-U.S. debt securities included $3.20 billion of supranational and non-U.S. agency bonds , $1.33 billion of corporate bonds and $1.30 billion of covered bonds.
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The following tables present activity related to our level 3 financial assets during the years ended December 31, 2019 and 2018 , respectively. Transfers into and out of level 3 are reported as of the beginning of the period presented. During the years ended December 31, 2019 and 2018 , transfers into level 3 were primarily related to collateralized loan obligations, collateralized mortgage obligations and non-U.S. debt securities, for which fair value was measured using information obtained from third party sources, including non-binding broker/dealer quotes. During the years ended December 31, 2019 and 2018 , transfers out of level 3 were mainly related to certain ABS, MBS, municipal bonds and non-U.S. debt securities, for which fair value was measured using prices for which observable market information became available. Fair Value Measurements Using Significant Unobservable Inputs Year Ended December 31, 2019 Fair Value as of Total Realized and Purchases Sales Settlements Transfers into Level 3 Transfers out of Level 3 Fair Value as of December 31, 2019 (1) Change in Unrealized Gains (Losses) Related to Financial Instruments Held as of December 31, 2019 (In millions) Recorded in Revenue (1) Recorded in Other Comprehensive Income (1) Assets: Available-for-sale Investment securities: U.S. Treasury and federal agencies: Mortgage-backed securities $ — $ — $ — $ 123 $ — $ — $ — $ (123 ) $ — Asset-backed securities: Collateralized loan obligations 593 1 — 1,065 — (342 ) 503 — 1,820 Total asset-backed securities 593 1 — 1,065 — (342 ) 503 — 1,820 Non-U.S. debt securities: Asset-backed securities 631 — (9 ) 340 — (36 ) — (39 ) 887 Other 58 — (1 ) — — — — (12 ) 45 Total non-U.S. debt securities 689 — (10 ) 340 — (36 ) — (51 ) 932 State and political subdivisions — — — — — — — — — Collateralized mortgage obligations 2 — — — — (2 ) — — — Total Available-for-sale investment securities 1,284 1 (10 ) 1,528 — (380 ) 503 (174 ) 2,752 Other assets: Derivative instruments: Foreign exchange contracts 4 (15 ) — 16 — (1 ) — — 4 $ (11 ) Total derivative instruments 4 (15 ) — 16 — (1 ) — — 4 (11 ) Total assets carried at fair value $ 1,288 $ (14 ) $ (10 ) $ 1,544 $ — $ (381 ) $ 503 $ (174 ) $ 2,756 $ (11 ) (1) Total realized and unrealized gains (losses) on AFS investment securities are included within gains (losses) related to investment securities, net. Total realized and unrealized gains (losses) on derivative instruments are included within f oreign exchange trading services. Fair Value Measurements Using Significant Unobservable Inputs Year Ended December 31, 2018 Fair Value as of December 31, 2017 Total Realized and Purchases Sales Settlements Transfers Transfers Fair Value as of December 31, 2018 (1) Change in Unrealized Gains (Losses) Related to Financial Instruments Held as of December 31, 2018 (In millions) Recorded (1) Recorded (1) Assets: Available-for-sale Investment securities: Asset-backed securities: Collateralized loan obligations $ 1,358 $ 4 $ (7 ) $ 351 $ (636 ) $ (268 ) $ — $ (209 ) $ 593 Total asset-backed securities 1,358 4 (7 ) 351 (636 ) (268 ) — (209 ) 593 Non-U.S. debt securities: Mortgage-backed securities 119 — — — — — — (119 ) — Asset-backed securities 402 — (14 ) 495 (310 ) (56 ) 114 — 631 Other 204 — (6 ) 13 (59 ) (30 ) — (64 ) 58 Total non-U.S. debt securities 725 — (20 ) 508 (369 ) (86 ) 114 (183 ) 689 State and political subdivisions 43 — — — (37 ) (1 ) — (5 ) — Collateralized mortgage obligations — — — — — (6 ) 8 — 2 Total Available-for-sale investment securities 2,126 4 (27 ) 859 (1,042 ) (361 ) 122 (397 ) 1,284 Other assets: Derivative instruments: Foreign exchange contracts 1 (3 ) — 6 — — — — 4 $ (3 ) Total derivative instruments 1 (3 ) — 6 — — — — 4 (3 ) Total assets carried at fair value $ 2,127 $ 1 $ (27 ) $ 865 $ (1,042 ) $ (361 ) $ 122 $ (397 ) $ 1,288 $ (3 ) (1) Total realized and unrealized gains (losses) on AFS investment securities are included within gains (losses) related to investment securities, net. Total realized and unrealized gains (losses) on derivative instruments are included within foreign exchange trading services.
Fair Value Inputs, Quantitative Information	The following table presents quantitative information, as of the dates indicated, about the valuation techniques and significant unobservable inputs used in the valuation of our level 3 financial assets and liabilities measured at fair value on a recurring basis for which we use internally-developed pricing models. The significant unobservable inputs for our level 3 financial assets and liabilities whose fair value is measured using pricing information from non-binding broker/dealer quotes are not included in the table, as the specific inputs applied are not provided by the broker/dealer. Quantitative Information about Level 3 Fair Value Measurements Fair Value Weighted-Average (Dollars in millions) As of December 31, 2019 As of December 31, 2018 Valuation Technique Significant Unobservable Input (1) As of December 31, 2019 As of December 31, 2018 Significant unobservable inputs readily available to State Street: Assets: Derivative Instruments, foreign exchange contracts $ 4 $ 4 Option model Volatility 8.2 % 11.4 % Total $ 4 $ 4 Liabilities: Derivative instruments, foreign exchange contracts $ 3 $ 4 Option model Volatility 7.0 % 11.4 % Total $ 3 $ 4 (1) Significant changes in these unobservable inputs may result in significant changes in fair value measurement of the derivative instrument.
Carrying Value and Estimated Fair Value of Financial Instruments by Fair Value Hierarchy	The following tables present the reported amounts and estimated fair values of the financial assets and liabilities not carried at fair value, as they would be categorized within the fair value hierarchy, as of the dates indicated: Fair Value Hierarchy (In millions) Reported Amount Estimated Fair Value Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) December 31, 2019 Financial Assets: Cash and due from banks $ 3,302 $ 3,302 $ 3,302 $ — $ — Interest-bearing deposits with banks 68,965 68,965 — 68,965 — Securities purchased under resale agreements 1,487 1,487 — 1,487 — Investment securities held-to-maturity 41,782 42,157 10,299 31,682 176 Net loans (1) 26,235 26,292 — 24,432 1,860 Other (2) 7,500 7,500 — 7,500 — Financial Liabilities: Deposits: Non-interest-bearing $ 34,031 $ 34,031 $ — $ 34,031 $ — Interest-bearing - U.S. 77,504 77,504 — 77,504 — Interest-bearing - non-U.S. 70,337 70,337 — 70,337 — Securities sold under repurchase agreements 1,102 1,102 — 1,102 — Other short-term borrowings 839 839 — 839 — Long-term debt 12,509 12,770 — 12,621 149 Other (2) 7,500 7,500 — 7,500 — (1) Includes $9 million of loans classified as held-for-sale that were measured at fair value on a recurring basis as of December 31, 2019 . (2) Represents a portion of underlying client assets related to our enhanced custody business, which clients have allowed us to transfer and re-pledge. Fair Value Hierarchy (In millions) Reported Amount Estimated Fair Value Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) December 31, 2018 Financial Assets: Cash and due from banks $ 3,212 $ 3,212 $ 3,212 $ — $ — Interest-bearing deposits with banks 73,040 73,040 — 73,040 — Securities purchased under resale agreements 4,679 4,679 — 4,679 — Investment securities held-to-maturity 41,914 41,351 14,541 26,688 122 Net loans (excluding leases) (1) 25,722 25,561 — 24,648 913 Other (2) 8,500 8,500 — 8,500 — Financial Liabilities: Deposits: Non-interest-bearing $ 44,804 $ 44,804 $ — $ 44,804 $ — Interest-bearing - U.S. 66,235 66,235 — 66,235 — Interest-bearing - non-U.S. 69,321 69,321 — 69,321 — Securities sold under repurchase agreements 1,082 1,082 — 1,082 — Other short-term borrowings 3,092 3,092 — 3,092 — Long-term debt 11,093 11,048 — 10,865 183 Other (2) 8,500 8,500 — 8,500 — (1) Includes $10 million of loans classified as held-for-sale that were measured at fair value on a recurring basis as of December 31, 2018 . (2) Represents a portion of underlying client assets related to our enhanced custody business, which clients have allowed us to transfer and re-pledge.

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
Investment Securities (Tables)	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Schedule of Marketable Securities	The following table presents the amortized cost, fair value and associated unrealized gains and losses of AFS and HTM investment securities as of the dates indicated: December 31, 2019 December 31, 2018 Amortized Cost Gross Unrealized Fair Value Amortized Cost Gross Unrealized Fair Value (In millions) Gains Losses Gains Losses Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 3,506 $ 9 $ 28 $ 3,487 $ 1,035 $ 4 $ — $ 1,039 Mortgage-backed securities 17,599 264 25 17,838 16,112 37 181 15,968 Total U.S. Treasury and federal agencies 21,105 273 53 21,325 17,147 41 181 17,007 Asset-backed securities: Student loans (1) 532 1 2 531 538 4 1 541 Credit cards 90 — 1 89 609 — 26 583 Collateralized loan obligations 1,822 1 3 1,820 594 1 2 593 Total asset-backed securities 2,444 2 6 2,440 1,741 5 29 1,717 Non-U.S. debt securities: Mortgage-backed securities 1,978 3 1 1,980 1,687 — 5 1,682 Asset-backed securities 2,179 2 2 2,179 1,580 — 6 1,574 Government securities 12,243 131 1 12,373 12,816 22 45 12,793 Other (2) 8,595 73 10 8,658 6,600 18 16 6,602 Total non-U.S. debt securities 24,995 209 14 25,190 22,683 40 72 22,651 State and political subdivisions (3) 1,725 59 1 1,783 1,905 20 7 1,918 Collateralized mortgage obligations 104 — — 104 200 — 3 197 Other U.S. debt securities 2,941 32 — 2,973 1,683 1 26 1,658 Total $ 53,314 $ 575 $ 74 $ 53,815 $ 45,359 $ 107 $ 318 $ 45,148 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 10,311 $ 24 $ 3 $ 10,332 $ 14,794 $ — $ 199 $ 14,595 Mortgage-backed securities 26,297 316 44 26,569 21,647 24 518 21,153 Total U.S. Treasury and federal agencies 36,608 340 47 36,901 36,441 24 717 35,748 Asset-backed securities: Student loans (1) 3,783 10 41 3,752 3,191 35 10 3,216 Credit cards — — — — 193 — — 193 Other — — — — 1 — — 1 Total asset-backed securities 3,783 10 41 3,752 3,385 35 10 3,410 Non-U.S. debt securities: Mortgage-backed securities 366 82 6 442 638 77 9 706 Asset-backed securities — — — — 223 — — 223 Government securities 328 — — 328 358 1 — 359 Other — — — — 46 — — 46 Total non-U.S. debt securities 694 82 6 770 1,265 78 9 1,334 Collateralized mortgage obligations 697 38 1 734 823 38 2 859 Total $ 41,782 $ 470 $ 95 $ 42,157 $ 41,914 $ 175 $ 738 $ 41,351 (1) Primarily comprised of securities guaranteed by the federal government with respect to at least 97% of defaulted principal and accrued interest on the underlying loans. (2) As of December 31, 2019 and December 31, 2018 , the fair value of other non-U.S. debt securities included $5.50 billion and $3.20 billion , respectively, primarily of supranational and non-U.S. agency bonds , $1.78 billion and $1.33 billion , respectively, of corporate bonds and $0.68 billion and $1.30 billion , respectively, of covered bonds. (3) As of December 31, 2019 and December 31, 2018 , the fair value of state and political subdivisions includes securities in trusts of $0.94 billion and $1.05 billion respectively. Additional information about these trusts is provided in Note 14 .
Schedule of Gross Pre-tax Unrealized Losses on Investment Securities	The following tables present the aggregate fair values of AFS and HTM investment securities that have been in a continuous unrealized loss position for less than 12 months , and those that have been in a continuous unrealized loss position for 12 months or longer, as of the dates indicated: As of December 31, 2019 Less than 12 months 12 months or longer Total (In millions) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 1,430 $ 28 $ — $ — $ 1,430 $ 28 Mortgage-backed securities 2,499 7 1,665 18 4,164 25 Total U.S. Treasury and federal agencies 3,929 35 1,665 18 5,594 53 Asset-backed securities: Student loans 271 1 127 1 398 2 Credit cards 89 1 — — 89 1 Collateralized loan obligations 862 2 278 1 1,140 3 Total asset-backed securities 1,222 4 405 2 1,627 6 Non-U.S. debt securities: Mortgage-backed securities 228 — 220 1 448 1 Asset-backed securities 672 1 109 1 781 2 Government securities 3,246 1 — — 3,246 1 Other 2,736 9 187 1 2,923 10 Total non-U.S. debt securities 6,882 11 516 3 7,398 14 State and political subdivisions 163 — 22 1 185 1 Collateralized mortgage obligations 13 — 4 — 17 — Other U.S. debt securities 219 — 14 — 233 — Total $ 12,428 $ 50 $ 2,626 $ 24 $ 15,054 $ 74 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 604 $ — $ 2,262 $ 3 $ 2,866 $ 3 Mortgage-backed securities 6,056 31 1,606 13 7,662 44 Total U.S. Treasury and federal agencies 6,660 31 3,868 16 10,528 47 Asset-backed securities: Student loans 2,003 22 778 19 2,781 41 Total asset-backed securities 2,003 22 778 19 2,781 41 Non-U.S. debt securities: Mortgage-backed securities — — 138 6 138 6 Total non-U.S. debt securities — — 138 6 138 6 Collateralized mortgage obligations 13 — 110 1 123 1 Total $ 8,676 $ 53 $ 4,894 $ 42 $ 13,570 $ 95 As of December 31, 2018 Less than 12 months 12 months or longer Total (In millions) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Available-for-sale: U.S. Treasury and federal agencies: Mortgage-backed securities $ 5,058 $ 21 $ 5,089 $ 160 $ 10,147 $ 181 Total U.S. Treasury and federal agencies 5,058 21 5,089 160 10,147 181 Asset-backed securities: Student loans 106 — 218 1 324 1 Credit cards 90 — 493 26 583 26 Collateralized loan obligations 548 2 — — 548 2 Total asset-backed securities 744 2 711 27 1,455 29 Non-U.S. debt securities: Mortgage-backed securities 1,407 4 118 1 1,525 5 Asset-backed securities 1,479 6 — — 1,479 6 Government securities 5,478 45 — — 5,478 45 Other 2,167 12 226 4 2,393 16 Total non-U.S. debt securities 10,531 67 344 5 10,875 72 State and political subdivisions 365 3 244 4 609 7 Collateralized mortgage obligations 181 3 14 — 195 3 Other U.S. debt securities 861 14 484 12 1,345 26 Total $ 17,740 $ 110 $ 6,886 $ 208 $ 24,626 $ 318 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 2,192 $ 45 $ 12,403 $ 154 $ 14,595 $ 199 Mortgage-backed securities 6,502 103 10,648 415 17,150 518 Total U.S. Treasury and federal agencies 8,694 148 23,051 569 31,745 717 Asset-backed securities: Student loans 481 4 536 6 1,017 10 Total asset-backed securities 481 4 536 6 1,017 10 Non-U.S. debt securities: Mortgage-backed securities 184 2 119 7 303 9 Total non-U.S. debt securities 184 2 119 7 303 9 Collateralized mortgage obligations 102 1 51 1 153 2 Total $ 9,461 $ 155 $ 23,757 $ 583 $ 33,218 $ 738
Investments Classified by Contractual Maturity Date	The following table presents the amortized cost and the fair value of contractual maturities of debt investment securities as of December 31, 2019 . The maturities of certain ABS, MBS and collateralized mortgage obligations are based on expected principal payments. Actual maturities may differ from these expected maturities since certain borrowers have the right to prepay obligations with or without prepayment penalties. As of December 31, 2019 (In millions) Under 1 Year 1 to 5 Years 6 to 10 Years Over 10 Years Total Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 1,050 $ 1,058 $ 1,009 $ 1,010 $ 1,448 $ 1,419 $ — $ — $ 3,507 $ 3,487 Mortgage-backed securities 116 118 971 970 2,954 2,951 13,558 13,799 17,599 17,838 Total U.S. Treasury and federal agencies 1,166 1,176 1,980 1,980 4,402 4,370 13,558 13,799 21,106 21,325 Asset-backed securities: Student loans 72 72 185 184 96 96 180 179 533 531 Credit cards — — — — 90 89 — — 90 89 Collateralized loan obligations — — 745 745 959 958 117 117 1,821 1,820 Total asset-backed securities 72 72 930 929 1,145 1,143 297 296 2,444 2,440 Non-U.S. debt securities: Mortgage-backed securities 430 430 568 569 196 196 784 785 1,978 1,980 Asset-backed securities 487 487 981 981 366 366 345 345 2,179 2,179 Government securities 4,183 4,183 7,270 7,381 791 809 — — 12,244 12,373 Other 883 884 6,634 6,689 1,057 1,063 19 22 8,593 8,658 Total non-U.S. debt securities 5,983 5,984 15,453 15,620 2,410 2,434 1,148 1,152 24,994 25,190 State and political subdivisions 236 238 622 635 526 554 341 356 1,725 1,783 Collateralized mortgage obligations — — — — — — 104 104 104 104 Other U.S. debt securities 759 760 2,056 2,083 126 130 — — 2,941 2,973 Total $ 8,216 $ 8,230 $ 21,041 $ 21,247 $ 8,609 $ 8,631 $ 15,448 $ 15,707 $ 53,314 $ 53,815 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 4,116 $ 4,114 $ 6,161 $ 6,185 $ 5 $ 5 $ 29 $ 29 $ 10,311 $ 10,333 Mortgage-backed securities 9 9 438 439 2,515 2,539 23,335 23,581 26,297 26,568 Total U.S. Treasury and federal agencies 4,125 4,123 6,599 6,624 2,520 2,544 23,364 23,610 36,608 36,901 Asset-backed securities: Student loans 96 92 207 206 408 402 3,072 3,051 3,783 3,751 Total asset-backed securities 96 92 207 206 408 402 3,072 3,051 3,783 3,751 Non-U.S. debt securities: Mortgage-backed securities 16 16 33 33 4 4 313 390 366 443 Government securities 328 328 — — — — — — 328 328 Total non-U.S. debt securities 344 344 33 33 4 4 313 390 694 771 Collateralized mortgage obligations 2 3 283 287 13 13 399 431 697 734 Total $ 4,567 $ 4,562 $ 7,122 $ 7,150 $ 2,945 $ 2,963 $ 27,148 $ 27,482 $ 41,782 $ 42,157
Gains and Losses Related to Investment Securities	The following tables present gross realized gains and losses from sales of AFS investment securities, and the components of net impairment losses included in net gains and losses related to investment securities for the periods indicated: Years Ended December 31, (In millions) 2019 2018 2017 Gross realized gains from sales of AFS investment securities $ 31 $ 205 $ 74 Gross realized losses from sales of AFS investment securities (32 ) (196 ) (113 ) Net impairment losses: Gross losses from OTTI — (3 ) — Net impairment losses — (3 ) — Gains (losses) related to investment securities, net (1 ) 6 (39 ) Net impairment losses, recognized in our consolidated statement of income, were composed of the following: Impairment associated with adverse changes in timing of expected future cash flows — (3 ) — Net impairment losses $ — $ (3 ) $ —
Schedule of Credit-Related Loss Activity Recognized in Earnings	The following table presents a roll-forward with respect to net impairment losses that have been recognized in income for the periods indicated: Years Ended December 31, (In millions) 2019 2018 2017 Balance, beginning of period $ 78 $ 77 $ 79 Additions (1) : Other-than-temporary-impairment recognized — 3 — Deductions (2) : Realized losses on securities sold or matured (8 ) (2 ) (2 ) Balance, end of period $ 70 $ 78 $ 77 1) Additions represent securities with a first time credit impairment realized or when a subsequent credit impairment has occurred. (2) Deductions represent impairments on securities that have been sold or matured, are required to be sold, or for which management intends to sell.

Loans (Tables)

Loans (Tables)	12 Months Ended
Loans (Tables)	Dec. 31, 2019
Receivables [Abstract]
Net Loans	The following table presents our recorded investment in loans, by segment, as of the dates indicated: (In millions) December 31, 2019 December 31, 2018 Domestic (1) : Commercial and financial: Loans to investment funds $ 14,546 $ 15,050 Senior secured bank loans 3,342 3,490 Loans to municipalities 848 902 Other 26 37 Commercial real estate 1,766 874 Total domestic 20,528 20,353 Foreign (1) : Commercial and financial: Loans to investment funds 4,662 4,505 Senior secured bank loans 1,119 931 Total foreign 5,781 5,436 Total loans (2) 26,309 25,789 Allowance for loan losses (74 ) (67 ) Loans, net of allowance $ 26,235 $ 25,722 (1) Domestic and foreign categorization is based on the borrower’s country of domicile. (2) Includes $3,256 million and $ 5,444 million of overdrafts as of December 31, 2019 and December 31, 2018 , respectively.
Recorded Investment in Each Class of Total Loans and Leases by Credit Quality Indicator	The following tables present our recorded investment in each class of loans by credit quality indicator as of the dates indicated: December 31, 2019 Commercial and Financial Commercial Real Estate Total Loans (In millions) Investment grade (1) $ 19,501 $ 1,766 $ 21,267 Speculative (2) 5,008 — 5,008 Special mention (3) 25 — 25 Substandard (4) 9 — 9 Total $ 24,543 $ 1,766 $ 26,309 December 31, 2018 Commercial and Financial Commercial Real Estate Total Loans (In millions) Investment grade (1) $ 19,599 $ 874 $ 20,473 Speculative (2) 5,308 — 5,308 Substandard (4) 8 — 8 Total $ 24,915 $ 874 $ 25,789 (1) Investment grade loans consist of counterparties with strong credit quality and low expected credit risk and probability of default. Ratings apply to counterparties with a strong capacity to support the timely repayment of any financial commitment. (2) Speculative loans consist of counterparties that face ongoing uncertainties or exposure to business, financial, or economic downturns. However, these counterparties may have financial flexibility or access to financial alternatives, which allow for financial commitments to be met. (3) Special mention loans consist of counterparties with potential weaknesses that, if uncorrected, may result in deterioration of repayment prospects. (4) Substandard loans consist of counterparties with well-defined weaknesses that jeopardize repayment with the possibility we will sustain some loss.
Schedule Of Loans And Leases Receivable By Impairment Methodology	The following table presents our recorded investment in loans, disaggregated based on our impairment methodology, as of the dates indicated: December 31, 2019 Commercial and Financial Commercial Real Estate Total Loans (In millions) Loans: Individually evaluated for impairment (1) $ 25 $ — $ 25 Collectively evaluated for impairment 24,518 1,766 26,284 Total $ 24,543 $ 1,766 $ 26,309 December 31, 2018 Commercial and Financial Commercial Real Estate Total Loans (In millions) Loans: Individually evaluated for impairment (1) $ 8 $ — $ 8 Collectively evaluated for impairment 24,907 874 25,781 Total $ 24,915 $ 874 $ 25,789 (1) As of December 31, 2019 , we had one loan for $25 million in the commercial and financial segment that was individually evaluated for impairment and deemed to be impaired. We recorded a specific reserve of $1 million on that loan. As of December 31, 2018 , we had one loan for $8 million in the commercial and financial segment that was individually evaluated for impairment and deemed to be impaired. We did not record any reserve on this loan, which was subsequently paid in full in January 2019.
Schedule of Activity in the Allowance for Loan Losses	The following table presents activity in the allowance for loan losses for the periods indicated: Years Ended December 31, (In millions) 2019 2018 2017 Allowance for loan losses: Beginning balance $ 67 $ 54 $ 53 Provision for loan losses (1) 10 15 2 Charge-offs (1) (3 ) (2 ) (1 ) Ending balance $ 74 $ 67 $ 54 (1) The provisions and charge-offs for loans were primarily attributable to exposure to senior secured loans to non-investment grade borrowers, purchased in connection with our loans.

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
Goodwill and Other Intangible Assets (Tables)	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Changes In The Carrying Amount Of Goodwill	The following table presents changes in the carrying amount of goodwill during the periods indicated: (In millions) Investment Servicing (1) Investment Management Total Goodwill: Ending balance December 31, 2017 $ 5,752 $ 270 $ 6,022 Acquisitions (1) 1,512 — 1,512 Foreign currency translation (84 ) (4 ) (88 ) Ending balance December 31, 2018 7,180 266 7,446 Acquisitions (2) 122 — 122 Foreign currency translation (13 ) 1 (12 ) Ending balance December 31, 2019 $ 7,289 $ 267 $ 7,556 (1) Investment Servicing includes our acquisition of CRD. (2) We have completed the purchase price accounting for the CRD acquisition as of March 31, 2019. Upon completion of valuation procedures related to the acquired assets and assumed liabilities, primarily the identifiable intangible assets, we recorded measurement period adjustments in the year ended December 31, 2019 , resulting in an increase in the goodwill of $113 million and a decrease of $93 million in other intangible assets.
Schedule of Finite-Lived Intangible Assets	The following table presents changes in the net carrying amount of other intangible assets during the periods indicated: (In millions) Investment Servicing (1) Investment Management Total Other intangible assets: Ending balance December 31, 2017 $ 1,432 $ 181 $ 1,613 Acquisitions (1) 1,007 — 1,007 Amortization (196 ) (30 ) (226 ) Foreign currency translation (25 ) — (25 ) Ending balance December 31, 2018 $ 2,218 $ 151 $ 2,369 Acquisitions (2) (93 ) — (93 ) Amortization (207 ) (29 ) (236 ) Foreign currency translation (10 ) — (10 ) Ending balance December 31, 2019 $ 1,908 $ 122 $ 2,030 (1) Investment Servicing includes our acquisition of CRD. (2) We have completed the purchase price accounting for the CRD acquisition as of March 31, 2019. Upon completion of valuation procedures related to the acquired assets and assumed liabilities, primarily the identifiable intangible assets, we recorded measurement period adjustments in the year ended December 31, 2019 , resulting in a decrease in the fair value of other intangible assets of $93 million , with a corresponding increase to goodwill. The following table presents the gross carrying amount, accumulated amortization and net carrying amount of other intangible assets by type as of the dates indicated: December 31, 2019 Gross Accumulated Net (In millions) Other intangible assets: Client relationships $ 3,104 $ (1,718 ) $ 1,386 Technology 403 (87 ) 316 Core deposits 673 (381 ) 292 Other 100 (64 ) 36 Total $ 4,280 $ (2,250 ) $ 2,030 December 31, 2018 Gross Accumulated Net (In millions) Other intangible assets: Client relationships $ 3,262 $ (1,605 ) $ 1,657 Technology 389 (49 ) 340 Core deposits 676 (350 ) 326 Other 103 (57 ) 46 Total $ 4,430 $ (2,061 ) $ 2,369
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	Expected future amortization expense for other intangible assets recorded as of December 31, 2019 is as follows: (In millions) Future Amortization Years Ended December 31, 2020 $ 240 2021 230 2022 227 2023 226 2024 220

Other Assets (Tables)

Other Assets (Tables)	12 Months Ended
Other Assets (Tables)	Dec. 31, 2019
Other Assets [Abstract]
Components of Other Assets	The following table presents the components of other assets as of the dates indicated: (In millions) December 31, 2019 December 31, 2018 Securities borrowed (1) $ 18,524 $ 19,575 Derivative instruments, net 4,753 5,189 Bank-owned life insurance 3,395 3,323 Investments in joint ventures and other unconsolidated entities 2,899 2,882 Collateral, net 874 1,354 Right-of-use assets (2) 858 — Accounts receivable 432 308 Prepaid expenses 395 493 Receivable for securities settlement 336 531 Income taxes receivable 309 129 Deferred tax assets, net of valuation allowance (3) 216 113 Deposits with clearing organizations 58 58 Other 962 834 Total $ 34,011 $ 34,789 (1) Refer to Note 11 , for further information on the impact of collateral on our financial statement presentation of securities borrowing and securities lending transactions. (2) We adopted ASU 2016-02, Leases (Topic 842) and relevant amendments, effective January 1, 2019. Refer to Note 1 for further information on this new accounting standard. (3) Deferred tax assets and liabilities recorded in our consolidated statement of condition are netted within the same tax jurisdiction.

Short-Term Borrowings (Tables)

Short-Term Borrowings (Tables)	12 Months Ended
Short-Term Borrowings (Tables)	Dec. 31, 2019
Debt Disclosure [Abstract]
Schedule of Short-term Debt	The following table presents information with respect to the amounts outstanding and weighted-average interest rates of the primary components of our short-term borrowings as of and for the years ended December 31 : (Dollars in millions) Securities Sold Under Repurchase Agreements Tax-Exempt Investment Program Other 2019 2018 2017 2019 2018 2017 2019 2018 2017 Balance as of December 31 $ 1,102 $ 1,082 $ 2,842 $ 823 $ 931 $ 1,078 $ — $ 2,000 $ — Maximum outstanding as of any month-end 4,125 3,441 4,302 931 1,078 1,158 — 2,000 — Average outstanding during the year 1,616 2,048 3,683 898 1,023 1,127 3 nm 1 Weighted-average interest rate as of year-end .00 % 1.38 % .03 % 1.75 % 1.74 % 1.45 % .00 % 2.68 % .00 % Weighted-average interest rate during the year 1.90 .62 .05 1.51 1.46 .79 .01 nm .00 nm Not meaningful The following table presents information about these U.S. government securities and the carrying value of the related repurchase agreements, including accrued interest, as of December 31, 2019 . U.S. Government Securities Sold Repurchase Agreements (1) (In millions) Amortized Cost Fair Value Amortized Cost Overnight maturity $ 3,891 $ 4,112 $ 1,102 (1) Collateralized by investment securities.

Long-Term Debt (Tables)

Long-Term Debt (Tables)	12 Months Ended
Long-Term Debt (Tables)	Dec. 31, 2019
Long-term Debt, Unclassified [Abstract]
Schedule of Long-term Debt	(Dollars in millions) As of December 31, Issuance Date Maturity Date Coupon Rate Seniority Interest Due Dates 2019 2018 Parent Company And Non-Banking Subsidiary Issuances August 18, 2015 August 18, 2025 3.55 % Senior notes 2/18; 8/18 (1) $ 1,331 $ 1,268 August 18, 2015 August 18, 2020 2.55 % Senior notes 2/18; 8/18 1,191 1,177 November 19, 2013 November 20, 2023 3.7 % Senior notes 5/20; 11/20 (1) 1,037 1,006 December 15, 2014 December 16, 2024 3.3 % Senior notes 6/16; 12/16 (1) 1,022 979 May 15, 2013 May 15, 2023 (2) 3.1 % Subordinated notes 5/15; 11/15 (1) 1,006 972 November 1, 2019 November 1, 2025 2.354 % Fixed-to-floating rate senior notes 5/1; 11/1 991 — May 15, 2017 May 15, 2023 2.653 % Fixed-to-floating rate senior notes 5/15; 11/15 (1) 753 734 March 7, 2011 March 7, 2021 4.375 % Senior notes 3/7; 9/7 (1) 748 731 May 19, 2016 May 19, 2021 1.95 % Senior notes 5/19; 11/19 (1) 744 725 May 19, 2016 May 19, 2026 2.65 % Senior notes 5/19; 11/19 (1) 741 698 December 3, 2018 December 3, 2029 4.141 % Fixed-to-floating rate senior notes 6/3; 12/3 (1) 546 513 December 3, 2018 December 3, 2024 3.776 % Fixed-to-floating rate senior notes 6/3; 12/3 (1) 522 507 August 18, 2015 August 18, 2020 Floating-rate Senior notes 2/18; 5/18; 8/18; 11/18 500 499 April 30, 2007 June 15, 2047 Floating-rate Junior subordinated debentures 3/15; 6/15; 9/15; 12/15 499 794 November 1, 2019 November 1, 2034 3.031 % Fixed-to-floating rate senior subordinated notes 5/1; 11/1 (2) 492 — May 15, 1998 May 15, 2028 Floating-rate Junior subordinated debentures 2/15; 5/15; 8/15; 11/15 100 150 June 21, 1996 June 15, 2026 (3) 7.35 % Senior notes 6/15; 12/15 150 150 Parent Company Long-term finance leases 136 190 Total long-term debt $ 12,509 $ 11,093 (1) We have entered into interest rate swap agreements, recorded as fair value hedges, to modify our interest expense on these senior and subordinated notes from a fixed rate to a floating rate. As of both December 31, 2019 and 2018 , the carrying value of long-term debt associated with these fair value hedges was $157 million . Refer to Note 10 for additional information about fair value hedges. (2) The subordinated notes qualify for inclusion in tier 2 regulatory capital under current federal regulatory capital guidelines. (3) We may not redeem notes prior to their maturity.

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	12 Months Ended
Derivative Financial Instruments (Tables)	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts of Outstanding Derivative Positions	The following table presents the aggregate contractual, or notional, amounts of derivative financial instruments including those entered into for trading and asset-and-liability management activities as of the dates indicated: (In millions) December 31, 2019 December 31, 2018 Derivatives not designated as hedging instruments: Interest rate contracts: Futures $ 4,368 $ 2,348 Foreign exchange contracts: Forward, swap and spot 2,378,808 2,238,819 Options purchased 1,581 578 Options written 1,110 576 Futures 1,040 49 Other: Stable value contracts (1) 26,895 26,634 Deferred value awards (2) 389 434 Derivatives designated as hedging instruments: Interest rate contracts: Swap agreements 15,196 10,596 Foreign exchange contracts: Forward and swap 3,176 3,412 (1) The notional value of the stable value contracts represents our maximum exposure. However, exposure to various stable value contracts is generally contractually limited to substantially lower amounts than the notional values. (2) Represents grants of deferred value awards to employees; refer to discussion in this note under "Derivatives Not Designated as Hedging Instruments."
Schedule of Derivative Assets at Fair Value	The following tables present the fair value of derivative financial instruments, excluding the impact of master netting agreements, recorded in our consolidated statement of condition as of the dates indicated. The impact of master netting agreements is provided in Note 11 . Derivative Assets (1) Derivative Liabilities (2) (In millions) December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 Derivatives not designated as hedging instruments: Foreign exchange contracts $ 15,140 $ 16,369 $ 15,054 $ 16,434 Other derivative contracts — — 182 214 Total $ 15,140 $ 16,369 $ 15,236 $ 16,648 Derivatives designated as hedging instruments: Foreign exchange contracts $ — $ 17 $ 96 $ 88 Interest rate contracts 8 13 49 71 Total $ 8 $ 30 $ 145 $ 159 (1) Derivative assets are included within other assets in our consolidated statement of condition. (2) Derivative liabilities are included within other liabilities in our consolidated statement of condition.
Schedule of Derivative Liabilities at Fair Value	The following tables present the fair value of derivative financial instruments, excluding the impact of master netting agreements, recorded in our consolidated statement of condition as of the dates indicated. The impact of master netting agreements is provided in Note 11 . Derivative Assets (1) Derivative Liabilities (2) (In millions) December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 Derivatives not designated as hedging instruments: Foreign exchange contracts $ 15,140 $ 16,369 $ 15,054 $ 16,434 Other derivative contracts — — 182 214 Total $ 15,140 $ 16,369 $ 15,236 $ 16,648 Derivatives designated as hedging instruments: Foreign exchange contracts $ — $ 17 $ 96 $ 88 Interest rate contracts 8 13 49 71 Total $ 8 $ 30 $ 145 $ 159 (1) Derivative assets are included within other assets in our consolidated statement of condition. (2) Derivative liabilities are included within other liabilities in our consolidated statement of condition.
Impact of Derivative Financial Instruments On Statement of Income	The following tables present the impact of our use of derivative financial instruments on our consolidated statement of income for the periods indicated: Years Ended December 31, 2019 2018 2017 (In millions) Location of Gain (Loss) on Derivative in Consolidated Statement of Income Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Derivatives not designated as hedging instruments: Foreign exchange contracts Foreign exchange trading services revenue $ 630 $ 723 $ 632 Foreign exchange contracts Software and processing fees (1) — — (23 ) Foreign exchange contracts Interest expense (1) (153 ) (41 ) — Interest rate contracts Foreign exchange trading services revenue (3 ) (6 ) 8 Interest rate contracts Software and processing fees (1) — (1 ) — Other derivative contracts Foreign exchange trading services revenue — 5 — Other derivative contracts Compensation and employee benefits (205 ) (171 ) (143 ) Total $ 269 $ 509 $ 474 (1) 2018 includes approximately $15 million of swap costs related to the first quarter of 2018 that were reclassified from software and processing fees to NII. The following tables present the impact of our use of derivative financial instruments on our consolidated statement of income for the periods indicated: Years Ended December 31, Years Ended December 31, 2019 2018 2017 2019 2018 2017 (In millions) Location of Gain (Loss) on Derivative in Consolidated Statement of Income Amount of Gain Hedged Item in Fair Value Hedging Relationship Location of Gain (Loss) on Hedged Item in Consolidated Statement of Income Amount of Gain Derivatives designated as fair value hedges: Foreign exchange contracts Software and processing fees $ — $ (74 ) $ 18 Investment securities Software and processing fees $ — $ 74 $ (18 ) Foreign exchange contracts Software and processing fees — (328 ) 626 Foreign exchange deposit Software and processing fees — 328 (626 ) Interest rate contracts Net interest income (4 ) 31 — Available-for-sale securities (1) Net interest income 2 (32 ) — Interest rate contracts Net interest income 266 (58 ) — Long-term debt Net interest income (255 ) 49 — Interest rate contracts Software and processing fees — — 39 — Available-for-sale securities (1) Software and processing fees — — — (37 ) Interest rate contracts Software and processing fees — — (38 ) — Long-term debt Software and processing fees — — — 39 Total $ 262 $ (429 ) $ 645 $ (253 ) $ 419 $ (642 ) (1) In 2019, 2018 and 2017, $18 million , $24 million and $22 million , respectively, of net unrealized gains on AFS investment securities designated in fair value hedges were recognized in OCI. Years Ended December 31, Years Ended December 31, 2019 2018 2017 Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income 2019 2018 2017 (In millions) Amount of Gain or (Loss) Recognized in Other Comprehensive Income on Derivative Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income Derivatives designated as cash flow hedges: Interest rate contracts $ 8 $ (12 ) $ (14 ) Net interest income $ (10 ) $ (1 ) $ 2 Foreign exchange contracts 43 (12 ) (104 ) Net interest income 27 27 24 Total derivatives designated as cash flow hedges $ 51 $ (24 ) $ (118 ) $ 17 $ 26 $ 26 Derivatives designated as net investment hedges: Foreign exchange contracts $ 30 $ 81 $ (160 ) Gains (Losses) related to investment securities, net $ — $ — $ — Total derivatives designated as net investment hedges 30 81 (160 ) — — — Total $ 81 $ 57 $ (278 ) $ 17 $ 26 $ 26
Schedule of Outstanding Hedges: (Notional Amount)	The following table shows the carrying amount and associated cumulative basis adjustments related to the application of hedge accounting that is included in the carrying amount of hedged assets and liabilities in fair value hedging relationships: December 31, 2019 Hedged Items Currently Designated Hedged Items No Longer Designated (1) (In millions) Carrying Amount of Assets and Liabilities (2) Cumulative Hedge Accounting Basis Adjustments Carrying Amount of Assets and Liabilities Cumulative Hedge Accounting Basis Adjustments Long-term debt $ 9,769 $ 164 $ 1,199 $ (8 ) Available-for-sale securities 940 49 — — Total $ 10,709 $ 213 $ 1,199 $ (8 ) December 31, 2018 Hedged Items Currently Designated Hedged Items No Longer Designated (1) (In millions) Carrying Amount of Assets and Liabilities (2) Cumulative Hedge Accounting Basis Adjustments Carrying Amount of Assets and Liabilities Cumulative Hedge Accounting Basis Adjustments Long-term debt $ 8,270 $ (137 ) $ 1,197 $ (20 ) Available-for-sale securities 1,496 72 50 1 Total $ 9,766 $ (65 ) $ 1,247 $ (19 ) (1) Represents hedged items no longer designated in qualifying fair value hedging relationships for which an associated basis adjustment exists at the balance sheet date. (2) Does not include the carrying amount of hedged items when only foreign currency risk is the designated hedged risk. The carrying amount excluded for investment securities was zero and $458 million for December 31, 2019 and December 31, 2018 , respectively.

Offsetting Arrangements (Tables

Offsetting Arrangements (Tables)	12 Months Ended
Offsetting Arrangements (Tables)	Dec. 31, 2019
Offsetting [Abstract]
Offsetting Assets	The following tables present information about the offsetting of assets related to derivative contracts and secured financing transactions, as of the dates indicated: Assets: December 31, 2019 Gross Amounts of Recognized Assets (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Assets Presented in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Cash and Securities Received (4) Net Amount (5) Derivatives: Foreign exchange contracts $ 15,140 $ (8,081 ) $ 7,059 $ — $ 7,059 Interest rate contracts (6) 8 (4 ) 4 — 4 Cash collateral and securities netting NA (2,310 ) (2,310 ) (685 ) (2,995 ) Total derivatives 15,148 (10,395 ) 4,753 (685 ) 4,068 Other financial instruments: Resale agreements and securities borrowing (7)(8) 179,989 (159,978 ) 20,011 (19,572 ) 439 Total derivatives and other financial instruments $ 195,137 $ (170,373 ) $ 24,764 $ (20,257 ) $ 4,507 Assets: December 31, 2018 Gross Amounts of Recognized Assets (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Assets Presented in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Cash and Securities Received (4) Net Amount (5) Derivatives: Foreign exchange contracts $ 16,386 $ (10,223 ) $ 6,163 $ — $ 6,163 Interest rate contracts (6) 13 — 13 — 13 Cash collateral and securities netting NA (987 ) (987 ) (220 ) (1,207 ) Total derivatives 16,399 (11,210 ) 5,189 (220 ) 4,969 Other financial instruments: Resale agreements and securities borrowing (7)(8) 116,143 (91,889 ) 24,254 (22,872 ) 1,382 Total derivatives and other financial instruments $ 132,542 $ (103,099 ) $ 29,443 $ (23,092 ) $ 6,351 (1) Amounts include all transactions regardless of whether or not they are subject to an enforceable netting arrangement. (2) Refer to Note 1 and Note 2 for additional information about the measurement basis of derivative instruments. (3) Amounts subject to netting arrangements which have been determined to be legally enforceable and eligible for netting in the consolidated statement of condition. (4) Includes securities in connection with our securities borrowing transactions. (5) Includes amounts secured by collateral not determined to be subject to enforceable netting arrangements. (6) Variation margin payments presented as settlements rather than collateral. (7) Included in the $20.01 billion as of December 31, 2019 were $1.49 billion of resale agreements and $18.52 billion of collateral provided related to securities borrowing. Included in the $24.25 billion as of December 31, 2018 were $4.68 billion of resale agreements and $19.58 billion of collateral provided related to securities borrowing. Resale agreements and collateral provided related to securities borrowing were recorded in securities purchased under resale agreements and other assets, respectively, in our consolidated statement of condition. Refer to Note 12 for additional information with respect to principal securities finance transactions. (8) Offsetting of resale agreements primarily relates to our involvement in FICC, where we settle transactions on a net basis for payment and delivery through the Fedwire system. NA Not applicable
Offsetting Liabilities	The following tables present information about the offsetting of liabilities related to derivative contracts and secured financing transactions, as of the dates indicated: Liabilities: December 31, 2019 Gross Amounts of Recognized Liabilities (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Liabilities Presented in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Cash and Securities Received (4) Net Amount (5) Derivatives: Foreign exchange contracts $ 15,150 $ (8,081 ) $ 7,069 $ — $ 7,069 Interest rate contracts (6) 49 (4 ) 45 — 45 Other derivative contracts 182 — 182 — 182 Cash collateral and securities netting NA (837 ) (837 ) (557 ) (1,394 ) Total derivatives 15,381 (8,922 ) 6,459 (557 ) 5,902 Other financial instruments: Repurchase agreements and securities lending (7)(8) 171,853 (159,977 ) 11,876 (10,793 ) 1,083 Total derivatives and other financial instruments $ 187,234 $ (168,899 ) $ 18,335 $ (11,350 ) $ 6,985 Liabilities: December 31, 2018 Gross Amounts of Recognized Liabilities (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Liabilities Presented in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Cash and Securities Received (4) Net Amount (5) Derivatives: Foreign exchange contracts $ 16,522 $ (10,223 ) $ 6,299 $ — $ 6,299 Interest rate contracts (6) 71 — 71 — 71 Other derivative contracts 214 — 214 — 214 Cash collateral and securities netting NA (1,341 ) (1,341 ) (215 ) (1,556 ) Total derivatives 16,807 (11,564 ) 5,243 (215 ) 5,028 Other financial instruments: Repurchase agreements and securities lending (7)(8) 104,494 (91,889 ) 12,605 (11,543 ) 1,062 Total derivatives and other financial instruments $ 121,301 $ (103,453 ) $ 17,848 $ (11,758 ) $ 6,090 (1) Amounts include all transactions regardless of whether or not they are subject to an enforceable netting arrangement. (2) Refer to Note 1 and Note 2 for additional information about the measurement basis of derivative instruments. (3) Amounts subject to netting arrangements which have been determined to be legally enforceable and eligible for netting in the consolidated statement of condition. (4) Includes securities provided in connection with our securities lending transactions. (5) Includes amounts secured by collateral not determined to be subject to enforceable netting arrangements. (6) Variation margin payments presented as settlements rather than collateral. (7) Included in the $11.88 billion as of December 31, 2019 were $1.10 billion of repurchase agreements and $10.77 billion of collateral received related to securities lending transactions. Included in the $12.60 billion as of December 31, 2018 were $1.08 billion of repurchase agreements and $11.52 billion of collateral received related to securities lending transactions. Repurchase agreements and collateral received related to securities lending were recorded in securities sold under repurchase agreements and accrued expenses and other liabilit ies, respectively, in our consolidated statement of condition. Refer to Note 12 for additional information with respect to principal securities finance transactions . (8) Offsetting of repurchase agreements primarily relates to our involvement in FICC, where we settle transactions on a net basis for payment and delivery through the Fedwire system. NA Not applicable
Securities Sold and Securities Loaned Under Repurchase Agreements	The following table summarizes our repurchase agreements and securities lending transactions by category of collateral pledged and remaining maturity of these agreements as of the periods indicated: As of December 31, 2019 As of December 31, 2018 (In millions) Overnight and Continuous Up to 30 Days Greater than 90 Days Total Overnight and Continuous Up to 30 Days Greater than 90 Days Total Repurchase agreements: U.S. Treasury and agency securities $ 156,465 $ — $ — $ 156,465 $ 88,904 $ — $ — $ 88,904 Total 156,465 — — 156,465 88,904 — — 88,904 Securities lending transactions: US Treasury and agency securities 15 — — 15 249 — — 249 Corporate debt securities 354 — — 354 278 — — 278 Equity securities 7,389 — 130 7,519 6,426 137 — 6,563 Other (1) 7,500 — — 7,500 8,500 — — 8,500 Total 15,258 — 130 15,388 15,453 137 — 15,590 Gross amount of recognized liabilities for repurchase agreements and securities lending $ 171,723 $ — $ 130 $ 171,853 $ 104,357 $ 137 $ — $ 104,494 (1) Represents a security interest in underlying client assets related to our enhanced custody business, which assets clients have allowed us to transfer and re-pledge.

Commitments and Guarantees (Tab

Commitments and Guarantees (Tables)	12 Months Ended
Commitments and Guarantees (Tables)	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Schedule of Guarantor Obligations	The following table presents the aggregate gross contractual amounts of our off-balance sheet commitments and off-balance sheet guarantees as of the dates indicated: (In millions) December 31, 2019 December 31, 2018 Commitments: Unfunded credit facilities $ 29,697 $ 28,951 Guarantees (1) : Indemnified securities financing $ 367,901 $ 342,337 Standby letters of credit 3,324 2,985 (1) The potential losses associated with these guarantees equal the gross contractual amounts and do not consider the value of any collateral or reflect any participations to independent third parties.
Schedule of Repurchase Agreements	The following table summarizes the aggregate fair values of indemnified securities financing and related collateral, as well as collateral invested in indemnified repurchase agreements, as of the dates indicated: (In millions) December 31, 2019 December 31, 2018 Fair value of indemnified securities financing $ 367,901 $ 342,337 Fair value of cash and securities held by us, as agent, as collateral for indemnified securities financing 385,428 357,893 Fair value of collateral for indemnified securities financing invested in indemnified repurchase agreements 45,658 42,610 Fair value of cash and securities held by us or our agents as collateral for investments in indemnified repurchase agreements 48,887 45,064

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
Shareholders' Equity (Tables)	Dec. 31, 2019
Equity [Abstract]
Schedule of Preferred Shares	The following table summarizes selected terms of each of the series of the preferred stock issued and outstanding as of December 31, 2019 : Preferred Stock (2) : Issuance Date Depositary Shares Issued Ownership Interest Per Depositary Share Liquidation Preference Per Share Liquidation Preference Per Depositary Share Per Annum Dividend Rate Dividend Payment Frequency Carrying Value as of December 31, 2019 Redemption Date (1) Series C August 2012 20,000,000 1/4,000th $ 100,000 $ 25 5.25% Quarterly $ 491 September 15, 2017 Series D February 2014 30,000,000 1/4,000th 100,000 25 5.90% to but excluding March 15, 2024, then a floating rate equal to the three-month LIBOR plus 3.108% Quarterly 742 March 15, 2024 Series F May 2015 750,000 1/100th 100,000 1,000 5.25% to but excluding September 15, 2020, then a floating rate equal to the three-month LIBOR plus 3.597% Semi-annually 742 September 15, 2020 Series G April 2016 20,000,000 1/4,000th 100,000 25 5.35% to but excluding March 15, 2026, then a floating rate equal to the three-month LIBOR plus 3.709% Quarterly 493 March 15, 2026 Series H September 2018 500,000 1/100th 100,000 1,000 5.625% to but excluding December 15, 2023, then a floating rate equal to the three-month LIBOR plus 2.539% Semi-annually 494 December 15, 2023 (1) On the redemption date, or any dividend payment date thereafter, the preferred stock and corresponding depositary shares may be redeemed by us, in whole or in part, at the liquidation price per share and liquidation price per depositary share plus any declared and unpaid dividends, without accumulation of any undeclared dividends. (2) The preferred stock and corresponding depositary shares may be redeemed at our option in whole, but not in part, prior to the redemption date upon the occurrence of a regulatory capital treatment event, as defined in the certificate of designation, at a redemption price equal to the liquidation price per share and liquidation price per depositary share plus any declared and unpaid dividends, without accumulation of any undeclared dividends.
Dividends Declared	The table below presents the dividends declared on common stock for the periods indicated: Years Ended December 31, 2019 2018 Dividends Declared per Share Total (In millions) Dividends Declared per Share Total (In millions) Common Stock $ 1.98 $ 728 $ 1.78 $ 665 The following table presents the dividends declared for each of the series of preferred stock issued and outstanding for the periods indicated: Years Ended December 31, 2019 2018 (Dollars in millions, except per share amounts) Dividends Declared per Share Dividends Declared per Depositary Share Total Dividends Declared per Share Dividends Declared per Depositary Share Total Preferred Stock: Series C $ 5,250 $ 1.32 $ 26 $ 5,250 $ 1.32 $ 26 Series D 5,900 1.48 44 5,900 1.48 44 Series E 6,000 1.52 45 6,000 1.52 45 Series F 5,250 52.50 40 5,250 52.50 40 Series G 5,352 1.32 27 5,352 1.32 27 Series H 5,625 56.25 28 1,219 12.18 6 Total $ 210 $ 188
Stock Repurchase Program	The table below presents the activity under our common stock purchase program during the year ended December 31, 2019: Year Ended December 31, 2019 Shares Acquired Average Cost per Share Total Acquired 2018 Program 8.8 $ 67.97 $ 600 2019 Program 16.1 62.28 1,000 Total 24.9 64.30 $ 1,600
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents the after-tax components of AOCI as of the dates indicated: Years Ended December 31, (In millions) 2019 2018 2017 Net unrealized (losses) on cash flow hedges $ (70 ) $ (89 ) $ (56 ) Net unrealized gains (losses) on available-for-sale securities portfolio 426 (193 ) 148 Net unrealized gains related to reclassified available-for-sale securities 19 58 19 Net unrealized gains (losses) on available-for-sale securities 445 (135 ) 167 Net unrealized (losses) on available-for-sale securities designated in fair value hedges (36 ) (40 ) (64 ) Net unrealized gains on hedges of net investments in non-U.S. subsidiaries 46 16 (65 ) Other-than-temporary impairment on held-to-maturity securities related to factors other than credit (2 ) (2 ) (6 ) Net unrealized (losses) on retirement plans (187 ) (143 ) (170 ) Foreign currency translation (1,072 ) (963 ) (815 ) Total $ (876 ) $ (1,356 ) $ (1,009 ) The following table presents changes in AOCI by component, net of related taxes, for the periods indicated: (In millions) Net Unrealized Gains (Losses) on Cash Flow Hedges Net Unrealized Gains (Losses) on Available-for-Sale Securities Net Unrealized Gains (Losses) on Hedges of Net Investments in Non-U.S. Subsidiaries Other-Than-Temporary Impairment on Held-to-Maturity Securities Net Unrealized Losses on Retirement Plans Foreign Currency Translation Total Balance as of December 31, 2017 $ (56 ) $ 103 $ (65 ) $ (6 ) $ (170 ) $ (815 ) $ (1,009 ) Other comprehensive income (loss) before reclassifications (52 ) (285 ) 81 6 — (148 ) (398 ) Amounts reclassified into (out of) earnings 19 7 — (2 ) 27 — 51 Other comprehensive income (loss) (33 ) (278 ) 81 4 27 (148 ) (347 ) Balance as of December 31, 2018 $ (89 ) $ (175 ) $ 16 $ (2 ) $ (143 ) $ (963 ) $ (1,356 ) Other comprehensive income (loss) before reclassifications 13 563 33 2 — (42 ) 569 Reclassification of certain tax effects (1) (6 ) 21 (3 ) (1 ) (28 ) (67 ) (84 ) Amounts reclassified into (out of) earnings 12 — — (1 ) (16 ) — (5 ) Other comprehensive income (loss) 19 584 30 — (44 ) (109 ) 480 Balance as of December 31, 2019 $ (70 ) $ 409 $ 46 $ (2 ) $ (187 ) $ (1,072 ) $ (876 ) (1) Represents the reclassification from accumulated other comprehensive income into retained earnings as a result of our adoption of ASU 2018-02 - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income in the first quarter of 2019.
Schedule of Reclassifications Out of AOCI	The following table presents after-tax reclassifications into earnings for the periods indicated: Years Ended December 31, 2019 2018 (In millions) Amounts Reclassified into Affected Line Item in Consolidated Statement of Income Available-for-sale securities: Net realized gains (losses) from sales of available-for-sale securities, net of related taxes of zero and ($2), respectively $ — $ 7 Net gains (losses) from sales of available-for-sale securities Held-to-maturity securities: Other-than-temporary impairment on held-to-maturity securities related to factors other than credit, net of related taxes of zero and $1, respectively (1 ) (2 ) Losses reclassified (from) to other comprehensive income Cash flow hedges: Gain reclassified from accumulated other comprehensive income into Income, net of related taxes of $5 and $7 12 19 Net interest income reclassified from other comprehensive income Retirement plans: Amortization of actuarial losses, net of related taxes of ($8) and $8, respectively (16 ) 27 Compensation and employee benefits expenses Total reclassifications (into) out of Accumulated other comprehensive loss $ (5 ) $ 51

Regulatory Capital (Tables)

Regulatory Capital (Tables)	12 Months Ended
Regulatory Capital (Tables)	Dec. 31, 2019
Banking and Thrift [Abstract]
Schedule of Regulatory Capital	The following table presents the regulatory capital structure, total RWA, related regulatory capital ratios and the minimum required regulatory capital ratios for us and State Street Bank as of the dates indicated. As a result of changes in the methodologies used to calculate our regulatory capital ratios from period to period as the provisions of the Basel III rule were phased in, the ratios presented in the table for each period-end are not directly comparable. Refer to the footnotes following the table. State Street Corporation State Street Bank (Dollars in millions) Basel III Advanced Approaches December 31, 2019 (1) Basel III Standardized Approach December 31, 2019 (1) Basel III Advanced Approaches December 31, 2018 (1) Basel III Standardized Approach December 31, 2018 (1) Basel III Advanced Approaches December 31, 2019 (1) Basel III Standardized Approach December 31, 2019 (1) Basel III Advanced Approaches December 31, 2018 (1) Basel III Standardized Approach December 31, 2018 (1) Common shareholders' equity: Common stock and related surplus $ 10,636 $ 10,636 $ 10,565 $ 10,565 $ 12,893 $ 12,893 $ 12,894 $ 12,894 Retained earnings 21,918 21,918 20,606 20,606 13,218 13,218 14,261 14,261 Accumulated other comprehensive income (loss) (870 ) (870 ) (1,332 ) (1,332 ) (654 ) (654 ) (1,112 ) (1,112 ) Treasury stock, at cost (10,209 ) (10,209 ) (8,715 ) (8,715 ) — — — — Total 21,475 21,475 21,124 21,124 25,457 25,457 26,043 26,043 Regulatory capital adjustments: Goodwill and other intangible assets, net of associated deferred tax liabilities (9,112 ) (9,112 ) (9,350 ) (9,350 ) (8,839 ) (8,839 ) (9,073 ) (9,073 ) Other adjustments (150 ) (150 ) (194 ) (194 ) (1 ) (1 ) (29 ) (29 ) Common equity tier 1 capital 12,213 12,213 11,580 11,580 16,617 16,617 16,941 16,941 Preferred stock 2,962 2,962 3,690 3,690 — — — — Tier 1 capital 15,175 15,175 15,270 15,270 16,617 16,617 16,941 16,941 Qualifying subordinated long-term debt 1,095 1,095 778 778 1,099 1,099 776 776 Allowance for loan losses and other 5 90 14 83 3 90 11 83 Total capital $ 16,275 $ 16,360 $ 16,062 $ 16,131 $ 17,719 $ 17,806 $ 17,728 $ 17,800 Risk-weighted assets: Credit risk (2) $ 54,763 $ 102,367 $ 47,738 $ 97,303 $ 51,610 $ 98,979 $ 45,565 $ 94,776 Operational risk (3) 47,963 NA 46,060 NA 44,138 NA 44,494 NA Market risk 1,638 1,638 1,517 1,517 1,638 1,638 1,517 1,517 Total risk-weighted assets $ 104,364 $ 104,005 $ 95,315 $ 98,820 $ 97,386 $ 100,617 $ 91,576 $ 96,293 Adjusted quarterly average assets $ 219,624 $ 219,624 $ 211,924 $ 211,924 $ 216,397 $ 216,397 $ 209,413 $ 209,413 Capital Ratios: 2019 Minimum Requirements Including Capital Conservation Buffer and G-SIB Surcharge (4) 2018 Minimum Requirements Including Capital Conservation Buffer and G-SIB Surcharge (5) Common equity tier 1 capital 8.5 % 7.5 % 11.7 % 11.7 % 12.1 % 11.7 % 17.1 % 16.5 % 18.5 % 17.6 % Tier 1 capital 10.0 9.0 14.5 14.6 16.0 15.5 17.1 16.5 18.5 17.6 Total capital 12.0 11.0 15.6 15.7 16.9 16.3 18.2 17.7 19.4 18.5 (1) Other adjustments within CET1 primarily include the overfunded portion of the firm’s defined benefit pension plan obligation net of associated deferred tax liabilities, disallowed deferred tax assets, and other required credit risk based deductions. (2) Includes a CVA which reflects the risk of potential fair value adjustments for credit risk reflected in our valuation of OTC derivative contracts. We used a simple CVA approach in conformity with the Basel III advanced approaches. (3) Under the current advanced approaches rules and regulatory guidance concerning operational risk models, RWA attributable to operational risk can vary substantially from period-to-period, without direct correlation to the effects of a particular loss event on our results of operations and financial condition and impacting dates and periods that may differ from the dates and periods as of and during which the loss event is reflected in our financial statements, with the timing and categorization dependent on the processes for model updates and, if applicable, model revalidation and regulatory review and related supervisory processes. An individual loss event can have a significant effect on the output of our operational RWA under the advanced approaches depending on the severity of the loss event and its categorization among the seven Basel-defined UOMs. (4) Minimum requirements were phased in with full implementation beginning on January 1, 2019; minimum requirements listed are as of December 31, 2019 . (5) Minimum requirements were phased in with full implementation beginning on January 1, 2019; minimum requirements listed are as of December 31, 2018 . NA Not applicable

Net Interest Income (Tables)

Net Interest Income (Tables)	12 Months Ended
Net Interest Income (Tables)	Dec. 31, 2019
Banking and Thrift [Abstract]
Components of Interest Revenue and Interest Expense	The following table presents the components of interest income and interest expense, and related NII, for the periods indicated: Years Ended December 31, (In millions) 2019 2018 2017 Interest income: Interest-bearing deposits with banks $ 416 $ 387 $ 180 Investment securities: U.S. Treasury and federal agencies 1,443 1,178 854 State and political subdivisions 49 143 226 Other investments 505 560 658 Securities purchased under resale agreements 364 335 264 Loans and leases 769 687 504 Other interest-earning assets 395 372 222 Total interest income 3,941 3,662 2,908 Interest expense: Interest-bearing deposits 663 363 163 Securities sold under repurchase agreements 31 13 2 Other short-term borrowings 21 17 10 Long-term debt 414 389 308 Other interest-bearing liabilities 246 209 121 Total interest expense 1,375 991 604 Net interest income $ 2,566 $ 2,671 $ 2,304

Equity-Based Compensation (Tabl

Equity-Based Compensation (Tables)	12 Months Ended
Equity-Based Compensation (Tables)	Dec. 31, 2019
Share-based Payment Arrangement [Abstract]
Schedule of Shares Awarded	The following table presents the cumulative total number of shares that was awarded under the 2017 Plan and the 2006 Plan for the periods indicated: As of December 31, (In millions) 2019 2018 2017 Total number of shares awarded under the 2006 Plan 68.9 68.9 68.9 Total number of shares awarded under the 2017 Plan 7.6 3.9 0.4
Schedule of Deferred Stock Awards	Shares (In thousands) Weighted-Average Grant Date Fair Value Deferred Stock Awards: Outstanding as of December 31, 2017 6,848 $ 65.44 Granted 2,500 101.25 Vested (3,235 ) 70.98 Forfeited (138 ) 80.60 Outstanding as of December 31, 2018 5,975 77.07 Granted 3,168 66.68 Vested (3,089 ) 71.20 Forfeited (220 ) 75.85 Outstanding as of December 31, 2019 5,834 74.33
Schedule of Performance Awards	Shares (In thousands) Weighted-Average Grant Date Fair Value Performance Awards: Outstanding as of December 31, 2017 1,548 $ 66.09 Granted 1,067 74.68 Forfeited (1 ) 101.26 Paid out (457 ) 70.58 Outstanding as of December 31, 2018 2,157 69.36 Granted 510 66.04 Forfeited (96 ) 74.82 Paid out (432 ) 51.01 Outstanding as of December 31, 2019 2,139 71.82

Occupancy Expense and Informa_2

Occupancy Expense and Information Systems and Communications Expense (Tables)	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Summary of Lease Costs and Other Information	The following table presents details related to remaining lease terms and discount rate as of December 31, 2019 : December 31, 2019 Weighted-average remaining lease term (in years): Finance leases 3.8 Operating leases 7.6 Weighted-average discount rate: Finance leases 7 % Operating leases 3 % The following table presents lease costs, sublease rental income, cash flows and new leases arising from lease transactions for 2019 : (In millions) Year End December 31, 2019 Finance lease: Amortization of right-of-use assets $ 21 Interest on lease liabilities 11 Total finance lease expense 32 Sublease income (9 ) Net finance lease expense 23 Operating lease: Operating lease expense 179 Sublease income (6 ) Net operating lease expense 173 Net lease expense $ 196 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from finance leases $ 11 Operating cash flows from operating leases 201 Financing cash flows from finance leases 54 Right-of-use assets obtained in exchange for new lease obligations: Operating leases $ 120 Finance leases —
Schedule of Future Minimum Lease Payments, Operating Leases	The following table presents future minimum lease payments under non-cancellable leases as of December 31, 2019 : (In millions) Operating Leases Finance Leases Total 2020 $ 183 $ 41 $ 224 2021 180 41 221 2022 164 41 205 2023 143 31 174 2024 108 — 108 Thereafter 356 — 356 Total future minimum lease payments 1,134 154 1,288 Less imputed interest (114 ) (18 ) (132 ) Total $ 1,020 $ 136 $ 1,156
Schedule of Future Minimum Lease Payments, Finance Leases	The following table presents future minimum lease payments under non-cancellable leases as of December 31, 2019 : (In millions) Operating Leases Finance Leases Total 2020 $ 183 $ 41 $ 224 2021 180 41 221 2022 164 41 205 2023 143 31 174 2024 108 — 108 Thereafter 356 — 356 Total future minimum lease payments 1,134 154 1,288 Less imputed interest (114 ) (18 ) (132 ) Total $ 1,020 $ 136 $ 1,156

Expenses (Tables)

Expenses (Tables)	12 Months Ended
Expenses (Tables)	Dec. 31, 2019
Other Expenses [Abstract]
Schedule of Expenses	The following table presents the components of other expenses for the periods indicated: Years Ended December 31, (In millions) 2019 2018 2017 Professional services $ 321 $ 357 $ 340 Sales advertising public relations 114 115 67 Securities processing 75 52 10 Regulatory fees and assessments 73 91 108 Bank operations 43 70 80 Donations 51 12 17 Insurance 19 18 20 Other 566 461 287 Total other expenses $ 1,262 $ 1,176 $ 929
Restructuring and Related Costs	The following table presents aggregate activity for repositioning charges and activity related to previous Beacon restructuring charges for the periods indicated: (In millions) Employee Real Estate Asset and Other Write-offs Total Accrual Balance at December 31, 2016 $ 37 $ 17 $ 2 $ 56 Accruals for Beacon 186 32 27 245 Payments and Other Adjustments (57 ) (17 ) (26 ) (100 ) Accrual Balance at December 31, 2017 166 32 3 201 Accruals for Beacon (7 ) — — (7 ) Accruals for Repositioning Charges 259 41 — 300 Payments and Other Adjustments (115 ) (36 ) (2 ) (153 ) Accrual Balance at December 31, 2018 303 37 1 341 Accruals for Beacon (2 ) — — (2 ) Accruals for Repositioning Charges 98 12 — 110 Payments and Other Adjustments (209 ) (42 ) — (251 ) Accrual Balance at December 31, 2019 $ 190 $ 7 $ 1 $ 198

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)	The following table presents the components of income tax expense (benefit) for the periods indicated: Years Ended December 31, (In millions) 2019 2018 2017 Current: Federal $ 157 $ 122 $ 343 State 86 148 24 Non-U.S. 357 374 380 Total current expense 600 644 747 Deferred: Federal (6 ) (128 ) 45 State 33 (22 ) 66 Non-U.S. (157 ) 14 (19 ) Total deferred expense (benefit) (130 ) (136 ) 92 Total income tax expense (benefit) $ 470 $ 508 $ 839
Schedule of Effective Income Tax Rate Reconciliation	The following table presents a reconciliation of the U.S. statutory income tax rate to our effective tax rate based on income before income tax expense for the periods indicated: Years Ended December 31, 2019 2018 2017 U.S. federal income tax rate 21.0 % 21.0 % 35.0 % Changes from statutory rate: State taxes, net of federal benefit 3.4 3.1 2.0 Tax-exempt income (1.5 ) (2.0 ) (4.3 ) Business tax credits (1) (5.4 ) (4.1 ) (3.7 ) Foreign tax differential (0.1 ) (0.6 ) (7.2 ) Foreign legal entity restructuring (4.3 ) — — Foreign tax credit limitations 2.2 0.2 — Transition tax — — 15.2 Deferred tax revaluation — (1.0 ) (6.8 ) Foreign designated earnings — — (0.7 ) Litigation expense 1.6 0.3 — Other, net 0.4 (0.6 ) (1.6 ) Effective tax rate 17.3 % 16.3 % 27.9 % (1) Business tax credits include low-income housing, production and investment tax credits.
Schedule of Deferred Tax Assets and Liabilities	The following table presents significant components of our gross deferred tax assets and gross deferred tax liabilities as of the dates indicated: December 31, (In millions) 2019 2018 Deferred tax assets: Other amortizable assets $ 394 $ 49 Tax credit carryforwards 387 274 Lease obligations 254 — Deferred compensation 120 134 Restructuring charges and other reserves 104 156 NOL and other carryforwards 73 104 Pension plan 66 55 Foreign currency translation 57 50 Unrealized losses on investment securities, net — 146 Total deferred tax assets 1,455 968 Valuation allowance for deferred tax assets (330 ) (138 ) Deferred tax assets, net of valuation allowance $ 1,125 $ 830 Deferred tax liabilities: Fixed and intangible assets $ 763 $ 744 Investment basis differences 258 229 Right-of-use Assets 223 — Unrealized gains on investment securities, net 86 — Other 32 11 Total deferred tax liabilities $ 1,362 $ 984
Summary of Valuation Allowance	The table below summarizes the deferred tax assets and related valuation allowances recognized as of December 31, 2019 : (In millions) Deferred Tax Asset Valuation Allowance Expiration Other amortizable assets $ 394 $ (243 ) __ Tax credits 387 (29 ) 2029-2039 NOLs - Non-U.S. 33 (18 ) 2020-2028, None Other carryforwards 27 (27 ) None NOLs - State 13 (13 ) 2020-2039
Summary of Income Tax Contingencies	The following table presents activity related to unrecognized tax benefits as of the dates indicated: December 31, (In millions) 2019 2018 2017 Beginning balance $ 108 $ 94 $ 71 Decrease related to agreements with tax authorities (17 ) (40 ) (14 ) Increase related to tax positions taken during current year 13 12 26 Increase related to tax positions taken during prior years 49 44 11 Decreases related to a lapse of the applicable statute of limitations (4 ) (2 ) — Ending balance $ 149 $ 108 $ 94

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	12 Months Ended
Earnings Per Common Share (Tables)	Dec. 31, 2019
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share	The following table presents the computation of basic and diluted earnings per common share for the periods indicated: Years Ended December 31, (Dollars in millions, except per share amounts) 2019 2018 2017 Net income $ 2,242 $ 2,593 $ 2,156 Less: Preferred stock dividends (232 ) (188 ) (182 ) Dividends and undistributed earnings allocated to participating securities (1) (1 ) (1 ) (2 ) Net income available to common shareholders $ 2,009 $ 2,404 $ 1,972 Average common shares outstanding (In thousands): Basic average common shares 369,911 371,983 374,793 Effect of dilutive securities: equity-based awards 3,755 4,493 5,420 Diluted average common shares 373,666 376,476 380,213 Anti-dilutive securities (2) 2,052 1,011 188 Earnings per common share: Basic $ 5.43 $ 6.46 $ 5.26 Diluted (3) 5.38 6.39 5.19 (1) Represents the portion of net income available to common equity allocated to participating securities, composed of unvested and fully vested SERP (Supplemental executive retirement plans) shares and fully vested deferred director stock awards, which are equity-based awards that contain non-forfeitable rights to dividends, and are considered to participate with the common stock in undistributed earnings. (2) Represents equity-based awards outstanding but not included in the computation of diluted average common shares, because their effect was anti-dilutive. Additional information about equity-based awards is provided in Note 18 . (3) Calculations reflect allocation of earnings to participating securities using the two-class method, as this computation is more dilutive than the treasury stock method.

Line of Business Information (T

Line of Business Information (Tables)	12 Months Ended
Line of Business Information (Tables)	Dec. 31, 2019
Segment Reporting [Abstract]
Summary of Line of Business Results	The following is a summary of our line of business results for the periods indicated. The amounts in the “Other” columns were not allocated to our business lines. Prior reported results reflect reclassifications, for comparative purposes, related to management changes in methodologies associated with allocations of revenue and expenses to lines of business in 2019 . Years Ended December 31, Investment Investment Other Total (Dollars in millions) 2019 2018 2017 2019 2018 2017 2019 2018 2017 2019 2018 2017 Servicing fees $ 5,074 $ 5,429 $ 5,365 $ — $ — $ — $ — $ (8 ) $ — $ 5,074 $ 5,421 $ 5,365 Management fees — — — 1,771 1,851 1,616 — — — 1,771 1,851 1,616 Foreign exchange trading services 974 1,071 999 137 130 72 — — — 1,111 1,201 1,071 Securities finance 462 543 606 9 — — — — — 471 543 606 Software and processing fees (1)(2) 691 443 336 29 (5 ) 7 — — — 720 438 343 Total fee revenue (1) 7,201 7,486 7,306 1,946 1,976 1,695 — (8 ) — 9,147 9,454 9,001 Net interest income 2,590 2,691 2,309 (24 ) (20 ) (5 ) — — — 2,566 2,671 2,304 Total other income 43 6 (39 ) — — — — — — 43 6 (39 ) Total revenue (1) 9,834 10,183 9,576 1,922 1,956 1,690 — (8 ) — 11,756 12,131 11,266 Provision for loan losses 10 15 2 — — — — — — 10 15 2 Total expenses (1) 7,140 7,081 6,717 1,535 1,544 1,286 359 390 266 9,034 9,015 8,269 Income before income tax expense $ 2,684 $ 3,087 $ 2,857 $ 387 $ 412 $ 404 $ (359 ) $ (398 ) $ (266 ) $ 2,712 $ 3,101 $ 2,995 Pre-tax margin 27 % 30 % 30 % 20 % 21 % 24 % 23 % 26 % 27 % Average assets (in billions) $ 220.3 $ 220.2 $ 214.0 $ 3.0 $ 3.2 $ 5.4 $ 223.3 $ 223.4 $ 219.4 (1) Investment Servicing includes results from our acquisition of CRD on October 1, 2018. (2) Investment Management includes other revenue items that are primarily driven by equity market movements.

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	12 Months Ended
Revenue from Contracts with Customers (Tables)	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	In the following table, revenue is disaggregated by our two lines of business and by revenue stream for which the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. The amounts in the "Other" columns were not allocated to our business lines. Year Ended December 31, 2019 Investment Servicing Investment Management Other Total (Dollars in millions) Topic 606 revenue All other revenue Total Topic 606 revenue All other revenue Total Topic 606 revenue All other revenue Total 2019 Servicing fees $ 5,074 $ — $ 5,074 $ — $ — $ — $ — $ — $ — $ 5,074 Management fees — — — 1,771 — 1,771 — — — 1,771 Foreign exchange trading services 346 628 974 137 — 137 — — — 1,111 Securities finance 259 203 462 — 9 9 — — — 471 Software and processing fees 456 235 691 — 29 29 — — — 720 Total fee revenue 6,135 1,066 7,201 1,908 38 1,946 — — — 9,147 Net interest income — 2,590 2,590 — (24 ) (24 ) — — — 2,566 Total other income — 43 43 — — — — — — 43 Total revenue $ 6,135 $ 3,699 $ 9,834 $ 1,908 $ 14 $ 1,922 $ — $ — $ — $ 11,756 Year Ended December 31, 2018 Investment Servicing Investment Management Other Total (Dollars in millions) Topic 606 revenue All other revenue Total Topic 606 revenue All other revenue Total Topic 606 revenue All other revenue Total 2018 Servicing fees $ 5,429 $ — $ 5,429 $ — $ — $ — $ (8 ) $ — $ (8 ) $ 5,421 Management fees — — — 1,851 — 1,851 — — — 1,851 Foreign exchange trading services 361 710 1,071 130 — 130 — — — 1,201 Securities finance 308 235 543 — — — — — — 543 Software and processing fees 209 234 443 — (5 ) (5 ) — — — 438 Total fee revenue 6,307 1,179 7,486 1,981 (5 ) 1,976 (8 ) — (8 ) 9,454 Net interest income — 2,691 2,691 — (20 ) (20 ) — — — 2,671 Total other income — 6 6 — — — — — — 6 Total revenue $ 6,307 $ 3,876 $ 10,183 $ 1,981 $ (25 ) $ 1,956 $ (8 ) $ — $ (8 ) $ 12,131

Non-U.S. Activities (Tables)

Non-U.S. Activities (Tables)	12 Months Ended
Non-U.S. Activities (Tables)	Dec. 31, 2019
Segments, Geographical Areas [Abstract]
Schedule of Results from Non-U.S. Operations	The following table presents our U.S. and non-U.S. financial results for the periods indicated: Years Ended December 31, 2019 2018 2017 (In millions) Non-U.S. (1) U.S. Total Non-U.S. (1) U.S. Total Non-U.S. (1) U.S. Total Total revenue $ 4,974 $ 6,782 $ 11,756 $ 5,190 $ 6,941 $ 12,131 $ 4,734 $ 6,532 $ 11,266 Income before income tax expense 1,159 1,553 2,712 1,294 1,807 3,101 1,230 1,765 2,995 (1) Geographic mix is generally based on the domicile of the entity servicing the funds and is not necessarily representative of the underlying asset mix.

Parent Company Financial Stat_2

Parent Company Financial Statements (Tables)	12 Months Ended
Parent Company Financial Statements (Tables)	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
Statement of Income - Parent Company	Statement of Income - Parent Company Years Ended December 31, (In millions) 2019 2018 2017 Cash dividends from consolidated banking subsidiary $ 3,300 $ 785 $ 2,224 Cash dividends from consolidated non-banking subsidiaries and unconsolidated entities 285 41 12 Other, net 149 58 127 Total revenue 3,734 884 2,363 Interest expense 415 381 297 Other expenses 108 162 94 Total expenses 523 543 391 Income tax (benefit) (91 ) (127 ) (86 ) Income before equity in undistributed income of consolidated subsidiaries and unconsolidated entities 3,302 468 2,058 Equity in undistributed income of consolidated subsidiaries and unconsolidated entities: Consolidated banking subsidiary (1,070 ) 1,944 (1 ) Consolidated non-banking subsidiaries and unconsolidated entities 10 181 99 Net income $ 2,242 $ 2,593 $ 2,156
Statement of Condition - Parent Company	Statement of Condition - Parent Company As of December 31, (In millions) 2019 2018 Assets: Interest-bearing deposits with consolidated banking subsidiary $ 428 $ 486 Trading account assets 393 357 Investment securities available-for-sale 250 224 Investments in subsidiaries: Consolidated banking subsidiary 25,451 25,966 Consolidated non-banking subsidiaries 7,240 6,726 Unconsolidated entities 117 106 Notes and other receivables from: Consolidated banking subsidiary — 64 Consolidated non-banking subsidiaries and unconsolidated entities 3,361 2,337 Other assets 270 96 Total assets $ 37,510 $ 36,362 Liabilities: Accrued expenses and other liabilities $ 696 $ 685 Long-term debt 12,383 10,940 Total liabilities 13,079 11,625 Shareholders’ equity 24,431 24,737 Total liabilities and shareholders’ equity $ 37,510 $ 36,362
Statement of Cash Flows - Parent Company	Statement of Cash Flows - Parent Company Years Ended December 31, (In millions) 2019 2018 2017 Net cash provided by operating activities $ 2,684 $ 2,250 $ 2,047 Investing Activities: Net decrease (increase) in interest-bearing deposits with consolidated banking subsidiary 58 46 3,103 Proceeds from sales and maturities of available-for-sale securities 900 — — Purchases of available-for-sale securities (921 ) (224 ) — Investments in consolidated banking and non-banking subsidiaries (6,165 ) (4,883 ) (7,672 ) Sale or repayment of investment in consolidated banking and non-banking subsidiaries 5,345 2,472 4,216 Net increase in investments in unconsolidated affiliates — — 172 Net cash (used in) provided by investing activities (783 ) (2,589 ) (181 ) Financing Activities: Proceeds from issuance of long-term debt, net of issuance costs 1,495 996 748 Payments for long-term debt (50 ) (1,000 ) (450 ) Proceeds from issuance of preferred stock, net of issuance costs — 495 — Proceeds from issuance of common stock, net of issuance costs — 1,150 — Payments for redemption of preferred stock (750 ) — — Repurchases of common stock (1,585 ) (350 ) (1,292 ) Repurchases of common stock for employee tax withholding (81 ) (124 ) (104 ) Payments for cash dividends (930 ) (828 ) (768 ) Net cash provided (used in) financing activities (1,901 ) 339 (1,866 ) Net change — — — Cash and due from banks at beginning of year — — — Cash and due from banks at end of year $ — $ — $ —

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Basis of Presentation (Details) - 12 months ended Dec. 31, 2019	line_of_business	segment
Accounting Policies [Abstract]
Number of lines of business	2	2

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - New Accounting Pronouncement (Details) - USD ($) $ in Millions	Jan. 01, 2019	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease liabilities		$ 1,156
Stranded tax effects reclassified		$ (84)
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets	$ 910
Lease liabilities	1,060
Accounting Standards Update 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stranded tax effects reclassified	$ 84

Fair Value - Schedule of Fair V

Fair Value - Schedule of Fair Value Measurements on a Recurring Basis (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	$ 914	$ 860
Investment securities available-for-sale	53,815	45,148
Derivative assets	4,753	5,189
Derivative asset, collateral, cash offset	2,310	987
Derivative liability, collateral, cash offset	837	1,341
Non-US debt securities, supranational and non US agency bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	5,500	3,200
Non-US debt securities, covered bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	680	1,300
Non-U.S. debt securities, corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	1,780	1,330
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	914	860
Investment securities available-for-sale	53,815	45,148
Derivative asset, Impact of Netting	(10,395)	(11,210)
Derivative assets	4,753	5,189
Other	504	395
Other assets - impact of netting	0	0
Total, derivative asset	59,986	51,592
Derivative liability, Impact of Netting	(8,922)	(11,564)
Derivative liabilities	6,459	5,243
Total liabilities carried at fair value	6,464	5,243
Recurring \| Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, Impact of Netting	(10,391)	(11,210)
Derivative assets	4,749	5,176
Derivative liability, Impact of Netting	(8,918)	(11,564)
Derivative liabilities	6,232	4,958
Recurring \| Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, Impact of Netting	(4)	0
Derivative assets	4	13
Derivative liability, Impact of Netting	(4)	0
Derivative liabilities	45	71
Recurring \| Other derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability, Impact of Netting	0	0
Derivative liabilities	182	214
Recurring \| U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	34	34
Recurring \| Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	319	325
Recurring \| Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	561	501
Investment securities available-for-sale	2,973	1,658
Recurring \| US Treasury and federal agencies, direct obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	3,487	1,039
Recurring \| US Treasury and federal agencies, mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	17,838	15,968
Recurring \| Total U.S. Treasury and federal agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	21,325	17,007
Recurring \| Asset-backed securities, student loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	531	541
Recurring \| Asset-backed securities, credit cards
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	89	583
Recurring \| Asset-backed securities, collateralized loan obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	1,820	593
Recurring \| Total asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	2,440	1,717
Recurring \| Non-U.S. debt securities, mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	1,980	1,682
Recurring \| Non-U.S. debt securities, asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	2,179	1,574
Recurring \| Non-U.S. debt securities, government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	12,373	12,793
Recurring \| Non-U.S. debt securities, other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	8,658	6,602
Recurring \| Total non-U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	25,190	22,651
Recurring \| State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	1,783	1,918
Recurring \| Collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	104	197
Quoted Market Prices in Active Markets (Level 1) \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	201	180
Investment securities available-for-sale	3,487	1,039
Derivative asset	0	13
Other	0	0
Total, derivative asset	3,688	1,232
Derivative liability	9	0
Total liabilities carried at fair value	14	0
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0	0
Derivative liability	3	0
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0	13
Derivative liability	6	0
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| Other derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	0	0
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	34	34
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	146	146
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	21	0
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| US Treasury and federal agencies, direct obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	3,487	1,039
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| US Treasury and federal agencies, mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| Total U.S. Treasury and federal agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	3,487	1,039
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| Asset-backed securities, student loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| Asset-backed securities, credit cards
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| Asset-backed securities, collateralized loan obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| Total asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| Non-U.S. debt securities, mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| Non-U.S. debt securities, asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| Non-U.S. debt securities, government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| Non-U.S. debt securities, other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| Total non-U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Quoted Market Prices in Active Markets (Level 1) \| Recurring \| Collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	713	680
Investment securities available-for-sale	47,576	42,825
Derivative asset	15,144	16,382
Other	504	395
Total, derivative asset	63,937	60,282
Derivative liability	15,369	16,803
Total liabilities carried at fair value	15,369	16,803
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	15,136	16,382
Derivative liability	15,144	16,518
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	8	0
Derivative liability	43	71
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| Other derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	182	214
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	173	179
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	540	501
Investment securities available-for-sale	2,973	1,658
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| US Treasury and federal agencies, direct obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| US Treasury and federal agencies, mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	17,838	15,968
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| Total U.S. Treasury and federal agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	17,838	15,968
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| Asset-backed securities, student loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	531	541
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| Asset-backed securities, credit cards
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	89	583
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| Asset-backed securities, collateralized loan obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| Total asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	620	1,124
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| Non-U.S. debt securities, mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	1,980	1,682
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| Non-U.S. debt securities, asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	1,292	943
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| Non-U.S. debt securities, government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	12,373	12,793
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| Non-U.S. debt securities, other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	8,613	6,544
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| Total non-U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	24,258	21,962
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	1,783	1,918
Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring \| Collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	104	195
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Investment securities available-for-sale	2,752	1,284
Derivative asset	4	4
Other	0	0
Total, derivative asset	2,756	1,288
Derivative liability	3	4
Total liabilities carried at fair value	3	4
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	4	4
Derivative liability	3	4
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0	0
Derivative liability	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| Other derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Investment securities available-for-sale	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| US Treasury and federal agencies, direct obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| US Treasury and federal agencies, mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| Total U.S. Treasury and federal agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| Asset-backed securities, student loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| Asset-backed securities, credit cards
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| Asset-backed securities, collateralized loan obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	1,820	593
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| Total asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	1,820	593
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| Non-U.S. debt securities, mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| Non-U.S. debt securities, asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	887	631
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| Non-U.S. debt securities, government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| Non-U.S. debt securities, other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	45	58
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| Total non-U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	932	689
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring \| Collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale	0	$ 2
Other \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading liability	5
Other \| Quoted Market Prices in Active Markets (Level 1) \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading liability	5
Other \| Pricing Methods with Significant Observable Market Inputs (Level 2) \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading liability	0
Other \| Pricing Methods with Significant Unobservable Market Inputs (Level 3) \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading liability	0
Trading liability, Impact of Netting	$ 0

Fair Value - Schedule of Fair_2

Fair Value - Schedule of Fair Value Measurements, Assets, Using Significant Unobservable Inputs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	$ 1,288	$ 2,127
Total realized and unrealized gain (losses) recorded in revenue	(14)	1
Total realized and unrealized gain (losses) recorded in other comprehensive income	(10)	(27)
Purchases	1,544	865
Sales	0	(1,042)
Settlements	(381)	(361)
Transfers into Level 3	503	122
Transfers out of Level 3	(174)	(397)
Fair value, end of period	2,756	1,288
Change in unrealized gains (losses) related to financial instruments held	(11)	(3)
Derivative instruments, assets
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	4	1
Total realized and unrealized gain (losses) recorded in revenue	(15)	(3)
Total realized and unrealized gain (losses) recorded in other comprehensive income	0	0
Purchases	16	6
Sales	0	0
Settlements	(1)	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair value, end of period	4	4
Change in unrealized gains (losses) related to financial instruments held	(11)	(3)
Foreign exchange contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	4	1
Total realized and unrealized gain (losses) recorded in revenue	(15)	(3)
Total realized and unrealized gain (losses) recorded in other comprehensive income	0	0
Purchases	16	6
Sales	0	0
Settlements	(1)	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair value, end of period	4	4
Change in unrealized gains (losses) related to financial instruments held	(11)	(3)
US Treasury and federal agencies, mortgage-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	0
Total realized and unrealized gain (losses) recorded in revenue	0
Total realized and unrealized gain (losses) recorded in other comprehensive income	0
Purchases	123
Sales	0
Settlements	0
Transfers into Level 3	0
Transfers out of Level 3	(123)
Fair value, end of period	0	0
Asset-backed securities, collateralized loan obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	593	1,358
Total realized and unrealized gain (losses) recorded in revenue	1	4
Total realized and unrealized gain (losses) recorded in other comprehensive income	0	(7)
Purchases	1,065	351
Sales	0	(636)
Settlements	(342)	(268)
Transfers into Level 3	503	0
Transfers out of Level 3	0	(209)
Fair value, end of period	1,820	593
Asset-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	593	1,358
Total realized and unrealized gain (losses) recorded in revenue	1	4
Total realized and unrealized gain (losses) recorded in other comprehensive income	0	(7)
Purchases	1,065	351
Sales	0	(636)
Settlements	(342)	(268)
Transfers into Level 3	503	0
Transfers out of Level 3	0	(209)
Fair value, end of period	1,820	593
Non-U.S. debt securities, mortgage-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	0	119
Total realized and unrealized gain (losses) recorded in revenue		0
Total realized and unrealized gain (losses) recorded in other comprehensive income		0
Purchases		0
Sales		0
Settlements		0
Transfers into Level 3		0
Transfers out of Level 3		(119)
Fair value, end of period		0
Non-U.S. debt securities, asset-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	631	402
Total realized and unrealized gain (losses) recorded in revenue	0	0
Total realized and unrealized gain (losses) recorded in other comprehensive income	(9)	(14)
Purchases	340	495
Sales	0	(310)
Settlements	(36)	(56)
Transfers into Level 3	0	114
Transfers out of Level 3	(39)	0
Fair value, end of period	887	631
Non-U.S. debt securities, other
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	58	204
Total realized and unrealized gain (losses) recorded in revenue	0	0
Total realized and unrealized gain (losses) recorded in other comprehensive income	(1)	(6)
Purchases	0	13
Sales	0	(59)
Settlements	0	(30)
Transfers into Level 3	0	0
Transfers out of Level 3	(12)	(64)
Fair value, end of period	45	58
Total non-U.S. debt securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	689	725
Total realized and unrealized gain (losses) recorded in revenue	0	0
Total realized and unrealized gain (losses) recorded in other comprehensive income	(10)	(20)
Purchases	340	508
Sales	0	(369)
Settlements	(36)	(86)
Transfers into Level 3	0	114
Transfers out of Level 3	(51)	(183)
Fair value, end of period	932	689
State and political subdivisions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	0	43
Total realized and unrealized gain (losses) recorded in revenue	0	0
Total realized and unrealized gain (losses) recorded in other comprehensive income	0	0
Purchases	0	0
Sales	0	(37)
Settlements	0	(1)
Transfers into Level 3	0	0
Transfers out of Level 3	0	(5)
Fair value, end of period	0	0
Collateralized mortgage obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	2	0
Total realized and unrealized gain (losses) recorded in revenue	0	0
Total realized and unrealized gain (losses) recorded in other comprehensive income	0	0
Purchases	0	0
Sales	0	0
Settlements	(2)	(6)
Transfers into Level 3	0	8
Transfers out of Level 3	0	0
Fair value, end of period	0	2
Investment securities available-for-sale
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	1,284	2,126
Total realized and unrealized gain (losses) recorded in revenue	1	4
Total realized and unrealized gain (losses) recorded in other comprehensive income	(10)	(27)
Purchases	1,528	859
Sales	0	(1,042)
Settlements	(380)	(361)
Transfers into Level 3	503	122
Transfers out of Level 3	(174)	(397)
Fair value, end of period	$ 2,752	$ 1,284

Fair Value - Fair Value Inputs,

Fair Value - Fair Value Inputs, Assets and Liabilities, Quantitative Information (Details) - Pricing Methods with Significant Unobservable Market Inputs (Level 3) $ in Millions	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Volatility \| Option model \| Derivative instruments, liabilities \| Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Derivative liability, measurement input	0.070	0.114
Volatility \| Option model \| Derivative instruments, assets \| Weighted average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Derivative asset, measurement input	0.082	0.114
Significant Unobservable Inputs Readily Available
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Total, derivative asset	$ 4	$ 4
Total liabilities carried at fair value	3	4
Significant Unobservable Inputs Readily Available \| Derivative instruments, liabilities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Derivative instruments, foreign exchange contracts, derivative asset	3	4
Significant Unobservable Inputs Readily Available \| Derivative instruments, assets
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Derivative instruments, foreign exchange contracts, derivative asset	$ 4	$ 4

Fair Value - Carrying Value and

Fair Value - Carrying Value and Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Financial Assets:
Cash and due from banks	$ 3,302	$ 3,212
Interest-bearing deposits with banks	68,965	73,040
Securities purchased under resale agreements	1,487	4,679
Investment securities held-to-maturity	42,157	41,351
Financial Liabilities:
Non-interest-bearing	34,031	44,804
Interest-bearing - U.S.	77,504	66,235
Interest-bearing - non-U.S.	70,337	69,321
Securities sold under repurchase agreements	1,102	1,082
Other short-term borrowings	839	3,092
Reported Amount
Financial Assets:
Cash and due from banks	3,302	3,212
Interest-bearing deposits with banks	68,965	73,040
Securities purchased under resale agreements	1,487	4,679
Investment securities held-to-maturity	41,782	41,914
Net loans (excluding leases)	26,235	25,722
Other	7,500	8,500
Financial Liabilities:
Non-interest-bearing	34,031	44,804
Interest-bearing - U.S.	77,504	66,235
Interest-bearing - non-U.S.	70,337	69,321
Securities sold under repurchase agreements	1,102	1,082
Other short-term borrowings	839	3,092
Long-term debt	12,509	11,093
Other	7,500	8,500
Estimated Fair Value
Financial Assets:
Cash and due from banks	3,302	3,212
Interest-bearing deposits with banks	68,965	73,040
Securities purchased under resale agreements	1,487	4,679
Investment securities held-to-maturity	42,157	41,351
Net loans (excluding leases)	26,292	25,561
Other	7,500	8,500
Financial Liabilities:
Non-interest-bearing	34,031	44,804
Interest-bearing - U.S.	77,504	66,235
Interest-bearing - non-U.S.	70,337	69,321
Securities sold under repurchase agreements	1,102	1,082
Other short-term borrowings	839	3,092
Long-term debt	12,770	11,048
Other	7,500	8,500
Estimated Fair Value \| Nonrecurring Measurement Basis
Financial Assets:
Net loans (excluding leases)	9	10
Estimated Fair Value \| Quoted Market Prices in Active Markets (Level 1)
Financial Assets:
Cash and due from banks	3,302	3,212
Interest-bearing deposits with banks	0	0
Securities purchased under resale agreements	0	0
Investment securities held-to-maturity	10,299	14,541
Net loans (excluding leases)	0	0
Other	0	0
Financial Liabilities:
Non-interest-bearing	0	0
Interest-bearing - U.S.	0	0
Interest-bearing - non-U.S.	0	0
Securities sold under repurchase agreements	0	0
Other short-term borrowings	0	0
Long-term debt	0	0
Other	0	0
Estimated Fair Value \| Pricing Methods with Significant Observable Market Inputs (Level 2)
Financial Assets:
Cash and due from banks	0	0
Interest-bearing deposits with banks	68,965	73,040
Securities purchased under resale agreements	1,487	4,679
Investment securities held-to-maturity	31,682	26,688
Net loans (excluding leases)	24,432	24,648
Other	7,500	8,500
Financial Liabilities:
Non-interest-bearing	34,031	44,804
Interest-bearing - U.S.	77,504	66,235
Interest-bearing - non-U.S.	70,337	69,321
Securities sold under repurchase agreements	1,102	1,082
Other short-term borrowings	839	3,092
Long-term debt	12,621	10,865
Other	7,500	8,500
Estimated Fair Value \| Pricing Methods with Significant Unobservable Market Inputs (Level 3)
Financial Assets:
Cash and due from banks	0	0
Interest-bearing deposits with banks	0	0
Securities purchased under resale agreements	0	0
Investment securities held-to-maturity	176	122
Net loans (excluding leases)	1,860	913
Other	0	0
Financial Liabilities:
Non-interest-bearing	0	0
Interest-bearing - U.S.	0	0
Interest-bearing - non-U.S.	0	0
Securities sold under repurchase agreements	0	0
Other short-term borrowings	0	0
Long-term debt	149	183
Other	$ 0	$ 0

Investment Securities - Schedul

Investment Securities - Schedule of Marketable Securities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	$ 53,314	$ 45,359
Available for sale, gross unrealized gains	575	107
Available for sale, gross unrealized losses	74	318
Available-for-sale, fair value	53,815	45,148
Held to maturity, amortized cost	41,782	41,914
Held to maturity, gross unrealized gains	470	175
Held to maturity, gross unrealized losses	95	738
Investment securities held-to-maturity	42,157	41,351
US Treasury and federal agencies, direct obligations
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	3,506	1,035
Available for sale, gross unrealized gains	9	4
Available for sale, gross unrealized losses	28	0
Available-for-sale, fair value	3,487	1,039
Held to maturity, amortized cost	10,311	14,794
Held to maturity, gross unrealized gains	24	0
Held to maturity, gross unrealized losses	3	199
Investment securities held-to-maturity	10,332	14,595
US Treasury and federal agencies, mortgage-backed securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	17,599	16,112
Available for sale, gross unrealized gains	264	37
Available for sale, gross unrealized losses	25	181
Available-for-sale, fair value	17,838	15,968
Held to maturity, amortized cost	26,297	21,647
Held to maturity, gross unrealized gains	316	24
Held to maturity, gross unrealized losses	44	518
Investment securities held-to-maturity	26,569	21,153
Total U.S. Treasury and federal agencies
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	21,105	17,147
Available for sale, gross unrealized gains	273	41
Available for sale, gross unrealized losses	53	181
Available-for-sale, fair value	21,325	17,007
Held to maturity, amortized cost	36,608	36,441
Held to maturity, gross unrealized gains	340	24
Held to maturity, gross unrealized losses	47	717
Investment securities held-to-maturity	36,901	35,748
Asset-backed securities, student loans
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	532	538
Available for sale, gross unrealized gains	1	4
Available for sale, gross unrealized losses	2	1
Available-for-sale, fair value	531	541
Held to maturity, amortized cost	3,783	3,191
Held to maturity, gross unrealized gains	10	35
Held to maturity, gross unrealized losses	41	10
Investment securities held-to-maturity	3,752	3,216
Asset-backed securities, credit cards
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	90	609
Available for sale, gross unrealized gains	0	0
Available for sale, gross unrealized losses	1	26
Available-for-sale, fair value	89	583
Held to maturity, amortized cost	0	193
Held to maturity, gross unrealized gains	0	0
Held to maturity, gross unrealized losses	0	0
Investment securities held-to-maturity	0	193
Asset-backed securities, collateralized loan obligations
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	1,822	594
Available for sale, gross unrealized gains	1	1
Available for sale, gross unrealized losses	3	2
Available-for-sale, fair value	1,820	593
Held to maturity, amortized cost	0	1
Held to maturity, gross unrealized gains	0	0
Held to maturity, gross unrealized losses	0	0
Investment securities held-to-maturity	0	1
Total asset-backed securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	2,444	1,741
Available for sale, gross unrealized gains	2	5
Available for sale, gross unrealized losses	6	29
Available-for-sale, fair value	2,440	1,717
Held to maturity, amortized cost	3,783	3,385
Held to maturity, gross unrealized gains	10	35
Held to maturity, gross unrealized losses	41	10
Investment securities held-to-maturity	3,752	3,410
Non-U.S. debt securities, mortgage-backed securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	1,978	1,687
Available for sale, gross unrealized gains	3	0
Available for sale, gross unrealized losses	1	5
Available-for-sale, fair value	1,980	1,682
Held to maturity, amortized cost	366	638
Held to maturity, gross unrealized gains	82	77
Held to maturity, gross unrealized losses	6	9
Investment securities held-to-maturity	442	706
Non-U.S. debt securities, asset-backed securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	2,179	1,580
Available for sale, gross unrealized gains	2	0
Available for sale, gross unrealized losses	2	6
Available-for-sale, fair value	2,179	1,574
Held to maturity, amortized cost	0	223
Held to maturity, gross unrealized gains	0	0
Held to maturity, gross unrealized losses	0	0
Investment securities held-to-maturity	0	223
Non-U.S. debt securities, government securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	12,243	12,816
Available for sale, gross unrealized gains	131	22
Available for sale, gross unrealized losses	1	45
Available-for-sale, fair value	12,373	12,793
Held to maturity, amortized cost	328	358
Held to maturity, gross unrealized gains	0	1
Held to maturity, gross unrealized losses	0	0
Investment securities held-to-maturity	328	359
Non-U.S. debt securities, other
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	8,595	6,600
Available for sale, gross unrealized gains	73	18
Available for sale, gross unrealized losses	10	16
Available-for-sale, fair value	8,658	6,602
Held to maturity, amortized cost	0	46
Held to maturity, gross unrealized gains	0	0
Held to maturity, gross unrealized losses	0	0
Investment securities held-to-maturity	0	46
Total non-U.S. debt securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	24,995	22,683
Available for sale, gross unrealized gains	209	40
Available for sale, gross unrealized losses	14	72
Available-for-sale, fair value	25,190	22,651
Held to maturity, amortized cost	694	1,265
Held to maturity, gross unrealized gains	82	78
Held to maturity, gross unrealized losses	6	9
Investment securities held-to-maturity	770	1,334
State and political subdivisions
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	1,725	1,905
Available for sale, gross unrealized gains	59	20
Available for sale, gross unrealized losses	1	7
Available-for-sale, fair value	1,783	1,918
Collateralized mortgage obligations
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	104	200
Available for sale, gross unrealized gains	0	0
Available for sale, gross unrealized losses	0	3
Available-for-sale, fair value	104	197
Held to maturity, amortized cost	697	823
Held to maturity, gross unrealized gains	38	38
Held to maturity, gross unrealized losses	1	2
Investment securities held-to-maturity	734	859
Other U.S. debt securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	2,941	1,683
Available for sale, gross unrealized gains	32	1
Available for sale, gross unrealized losses	0	26
Available-for-sale, fair value	$ 2,973	1,658
Federal family education loan program
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Federal government credit support guarantee, percentage minimum	97.00%
Non-US debt securities, supranational and non US agency bonds
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available-for-sale, fair value	$ 5,500	3,200
Non-U.S. debt securities, corporate bonds
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available-for-sale, fair value	1,780	1,330
Non-US debt securities, covered bonds
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available-for-sale, fair value	680	1,300
State and political subdivisions, securities in trusts
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Investment securities related to state and political subdivisions	$ 940	$ 1,050

Investment Securities - Narrati

Investment Securities - Narrative (Details) $ in Millions	12 Months Ended
Investment Securities - Narrative (Details) $ in Millions	Dec. 31, 2019USD ($)security	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Pledged securities not separately reported	$ 49,480	$ 38,870
Investment securities available-for-sale	53,815	45,148
Losses from other-than-temporary impairment	0	3	$ 0
Gross pre-tax unrealized losses	$ 169
Number of securities in loss position \| security	622
Agency MBS
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Debt securities, available-for-sale, transferred security, at carrying value	$ 3,980	2,130	496
Debt securities, available-for-sale, unrealized loss	49	53	3
ABS and municipal bonds
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Securities sold		26,000	12,200
Pre-tax gain (loss) on sale of securities		9	(39)
Non-U.S. debt securities, mortgage-backed securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Investment securities available-for-sale	1,980	1,682
Losses from other-than-temporary impairment	$ 1	3	$ 1
Accounting Standards Update 2017-12
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Investment securities available-for-sale		1,200
Loss from sale of HTM securities		$ 36
Minimum \| Agency MBS
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Debt securities, available-for-sale, securities transferred, Security Term	10 years
Maximum \| Agency MBS
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Debt securities, available-for-sale, securities transferred, Security Term	42 years

Investment Securities - Sched_2

Investment Securities - Schedule of Gross Pre-Tax Unrealized Losses on Investment Securities (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	$ 12,428	$ 17,740
Available for sale, gross unrealized losses less than 12 months	50	110
Available for sale, fair value 12 months or longer	2,626	6,886
Available for sale, gross unrealized losses 12 months or longer	24	208
Available for sale, fair value total	15,054	24,626
Available for sale, gross unrealized losses total	74	318
Held to maturity, fair value less than 12 months	8,676	9,461
Held-to-maturity, gross unrealized losses, less than 12 months	53	155
Held to maturity, fair value 12 months or longer	4,894	23,757
Held to maturity, gross unrealized losses 12 months or longer	42	583
Held to maturity, fair value total	13,570	33,218
Held to maturity, gross unrealized losses total	95	738
US Treasury and federal agencies, direct obligations
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	1,430
Available for sale, gross unrealized losses less than 12 months	28
Available for sale, fair value 12 months or longer	0
Available for sale, gross unrealized losses 12 months or longer	0
Available for sale, fair value total	1,430
Available for sale, gross unrealized losses total	28
Held to maturity, fair value less than 12 months	604	2,192
Held-to-maturity, gross unrealized losses, less than 12 months	0	45
Held to maturity, fair value 12 months or longer	2,262	12,403
Held to maturity, gross unrealized losses 12 months or longer	3	154
Held to maturity, fair value total	2,866	14,595
Held to maturity, gross unrealized losses total	3	199
US Treasury and federal agencies, mortgage-backed securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	2,499	5,058
Available for sale, gross unrealized losses less than 12 months	7	21
Available for sale, fair value 12 months or longer	1,665	5,089
Available for sale, gross unrealized losses 12 months or longer	18	160
Available for sale, fair value total	4,164	10,147
Available for sale, gross unrealized losses total	25	181
Held to maturity, fair value less than 12 months	6,056	6,502
Held-to-maturity, gross unrealized losses, less than 12 months	31	103
Held to maturity, fair value 12 months or longer	1,606	10,648
Held to maturity, gross unrealized losses 12 months or longer	13	415
Held to maturity, fair value total	7,662	17,150
Held to maturity, gross unrealized losses total	44	518
Total U.S. Treasury and federal agencies
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	3,929	5,058
Available for sale, gross unrealized losses less than 12 months	35	21
Available for sale, fair value 12 months or longer	1,665	5,089
Available for sale, gross unrealized losses 12 months or longer	18	160
Available for sale, fair value total	5,594	10,147
Available for sale, gross unrealized losses total	53	181
Held to maturity, fair value less than 12 months	6,660	8,694
Held-to-maturity, gross unrealized losses, less than 12 months	31	148
Held to maturity, fair value 12 months or longer	3,868	23,051
Held to maturity, gross unrealized losses 12 months or longer	16	569
Held to maturity, fair value total	10,528	31,745
Held to maturity, gross unrealized losses total	47	717
Asset-backed securities, student loans
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	271	106
Available for sale, gross unrealized losses less than 12 months	1	0
Available for sale, fair value 12 months or longer	127	218
Available for sale, gross unrealized losses 12 months or longer	1	1
Available for sale, fair value total	398	324
Available for sale, gross unrealized losses total	2	1
Held to maturity, fair value less than 12 months	2,003	481
Held-to-maturity, gross unrealized losses, less than 12 months	22	4
Held to maturity, fair value 12 months or longer	778	536
Held to maturity, gross unrealized losses 12 months or longer	19	6
Held to maturity, fair value total	2,781	1,017
Held to maturity, gross unrealized losses total	41	10
Asset-backed securities, credit cards
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	89	90
Available for sale, gross unrealized losses less than 12 months	1	0
Available for sale, fair value 12 months or longer	0	493
Available for sale, gross unrealized losses 12 months or longer	0	26
Available for sale, fair value total	89	583
Available for sale, gross unrealized losses total	1	26
Asset-backed securities, collateralized loan obligations
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	862	548
Available for sale, gross unrealized losses less than 12 months	2	2
Available for sale, fair value 12 months or longer	278	0
Available for sale, gross unrealized losses 12 months or longer	1	0
Available for sale, fair value total	1,140	548
Available for sale, gross unrealized losses total	3	2
Asset-backed securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	1,222	744
Available for sale, gross unrealized losses less than 12 months	4	2
Available for sale, fair value 12 months or longer	405	711
Available for sale, gross unrealized losses 12 months or longer	2	27
Available for sale, fair value total	1,627	1,455
Available for sale, gross unrealized losses total	6	29
Held to maturity, fair value less than 12 months	2,003	481
Held-to-maturity, gross unrealized losses, less than 12 months	22	4
Held to maturity, fair value 12 months or longer	778	536
Held to maturity, gross unrealized losses 12 months or longer	19	6
Held to maturity, fair value total	2,781	1,017
Held to maturity, gross unrealized losses total	41	10
Non-U.S. debt securities, mortgage-backed securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	228	1,407
Available for sale, gross unrealized losses less than 12 months	0	4
Available for sale, fair value 12 months or longer	220	118
Available for sale, gross unrealized losses 12 months or longer	1	1
Available for sale, fair value total	448	1,525
Available for sale, gross unrealized losses total	1	5
Held to maturity, fair value less than 12 months	0	184
Held-to-maturity, gross unrealized losses, less than 12 months	0	2
Held to maturity, fair value 12 months or longer	138	119
Held to maturity, gross unrealized losses 12 months or longer	6	7
Held to maturity, fair value total	138	303
Held to maturity, gross unrealized losses total	6	9
Non-U.S. debt securities, asset-backed securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	672	1,479
Available for sale, gross unrealized losses less than 12 months	1	6
Available for sale, fair value 12 months or longer	109	0
Available for sale, gross unrealized losses 12 months or longer	1	0
Available for sale, fair value total	781	1,479
Available for sale, gross unrealized losses total	2	6
Non-U.S. debt securities, government securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	3,246	5,478
Available for sale, gross unrealized losses less than 12 months	1	45
Available for sale, fair value 12 months or longer	0	0
Available for sale, gross unrealized losses 12 months or longer	0	0
Available for sale, fair value total	3,246	5,478
Available for sale, gross unrealized losses total	1	45
Non-U.S. debt securities, other
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	2,736	2,167
Available for sale, gross unrealized losses less than 12 months	9	12
Available for sale, fair value 12 months or longer	187	226
Available for sale, gross unrealized losses 12 months or longer	1	4
Available for sale, fair value total	2,923	2,393
Available for sale, gross unrealized losses total	10	16
Total non-U.S. debt securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	6,882	10,531
Available for sale, gross unrealized losses less than 12 months	11	67
Available for sale, fair value 12 months or longer	516	344
Available for sale, gross unrealized losses 12 months or longer	3	5
Available for sale, fair value total	7,398	10,875
Available for sale, gross unrealized losses total	14	72
Held to maturity, fair value less than 12 months	0	184
Held-to-maturity, gross unrealized losses, less than 12 months	0	2
Held to maturity, fair value 12 months or longer	138	119
Held to maturity, gross unrealized losses 12 months or longer	6	7
Held to maturity, fair value total	138	303
Held to maturity, gross unrealized losses total	6	9
State and political subdivisions
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	163	365
Available for sale, gross unrealized losses less than 12 months	0	3
Available for sale, fair value 12 months or longer	22	244
Available for sale, gross unrealized losses 12 months or longer	1	4
Available for sale, fair value total	185	609
Available for sale, gross unrealized losses total	1	7
Collateralized mortgage obligations
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	13	181
Available for sale, gross unrealized losses less than 12 months	0	3
Available for sale, fair value 12 months or longer	4	14
Available for sale, gross unrealized losses 12 months or longer	0	0
Available for sale, fair value total	17	195
Available for sale, gross unrealized losses total	0	3
Held to maturity, fair value less than 12 months	13	102
Held-to-maturity, gross unrealized losses, less than 12 months	0	1
Held to maturity, fair value 12 months or longer	110	51
Held to maturity, gross unrealized losses 12 months or longer	1	1
Held to maturity, fair value total	123	153
Held to maturity, gross unrealized losses total	1	2
Other U.S. debt securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	219	861
Available for sale, gross unrealized losses less than 12 months	0	14
Available for sale, fair value 12 months or longer	14	484
Available for sale, gross unrealized losses 12 months or longer	0	12
Available for sale, fair value total	233	1,345
Available for sale, gross unrealized losses total	$ 0	$ 26

Investment Securities - Sched_3

Investment Securities - Schedule of Contractual Maturities of Debt Securities (Details) $ in Millions	Dec. 31, 2019USD ($)
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	$ 8,216
Available for sale, under 1 year, fair value	8,230
Available for sale, 1 to 5 years, amortized cost	21,041
Available for sale, 1 to 5 years, fair value	21,247
Available for sale, 6 to 10 years, amortized cost	8,609
Available for sale, 6 to 10 years, fair value	8,631
Available for sale, over 10 years, amortized cost	15,448
Available for sale, over 10 years, fair value	15,707
Available for sale, amortized cost	53,314
Available for sale, fair value	53,815
Held to maturity, under 1 year, amortized cost	4,567
Held to maturity, under 1 year, fair value	4,562
Held to maturity, 1 to 5 years, amortized cost	7,122
Held to maturity, 1 to 5 years, fair value	7,150
Held to maturity, 6 to 10 years, amortized cost	2,945
Held to maturity, 6 to 10 years, fair value	2,963
Held to maturity, over 10 years, amortized cost	27,148
Held to maturity, over 10 years, fair value	27,482
Held to maturity, amortized cost	41,782
Held to maturity, fair value	42,157
US Treasury and federal agencies, direct obligations
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	1,050
Available for sale, under 1 year, fair value	1,058
Available for sale, 1 to 5 years, amortized cost	1,009
Available for sale, 1 to 5 years, fair value	1,010
Available for sale, 6 to 10 years, amortized cost	1,448
Available for sale, 6 to 10 years, fair value	1,419
Available for sale, over 10 years, amortized cost	0
Available for sale, over 10 years, fair value	0
Available for sale, amortized cost	3,507
Available for sale, fair value	3,487
Held to maturity, under 1 year, amortized cost	4,116
Held to maturity, under 1 year, fair value	4,114
Held to maturity, 1 to 5 years, amortized cost	6,161
Held to maturity, 1 to 5 years, fair value	6,185
Held to maturity, 6 to 10 years, amortized cost	5
Held to maturity, 6 to 10 years, fair value	5
Held to maturity, over 10 years, amortized cost	29
Held to maturity, over 10 years, fair value	29
Held to maturity, amortized cost	10,311
Held to maturity, fair value	10,333
US Treasury and federal agencies, mortgage-backed securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	116
Available for sale, under 1 year, fair value	118
Available for sale, 1 to 5 years, amortized cost	971
Available for sale, 1 to 5 years, fair value	970
Available for sale, 6 to 10 years, amortized cost	2,954
Available for sale, 6 to 10 years, fair value	2,951
Available for sale, over 10 years, amortized cost	13,558
Available for sale, over 10 years, fair value	13,799
Available for sale, amortized cost	17,599
Available for sale, fair value	17,838
Held to maturity, under 1 year, amortized cost	9
Held to maturity, under 1 year, fair value	9
Held to maturity, 1 to 5 years, amortized cost	438
Held to maturity, 1 to 5 years, fair value	439
Held to maturity, 6 to 10 years, amortized cost	2,515
Held to maturity, 6 to 10 years, fair value	2,539
Held to maturity, over 10 years, amortized cost	23,335
Held to maturity, over 10 years, fair value	23,581
Held to maturity, amortized cost	26,297
Held to maturity, fair value	26,568
Total U.S. Treasury and federal agencies
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	1,166
Available for sale, under 1 year, fair value	1,176
Available for sale, 1 to 5 years, amortized cost	1,980
Available for sale, 1 to 5 years, fair value	1,980
Available for sale, 6 to 10 years, amortized cost	4,402
Available for sale, 6 to 10 years, fair value	4,370
Available for sale, over 10 years, amortized cost	13,558
Available for sale, over 10 years, fair value	13,799
Available for sale, amortized cost	21,106
Available for sale, fair value	21,325
Held to maturity, under 1 year, amortized cost	4,125
Held to maturity, under 1 year, fair value	4,123
Held to maturity, 1 to 5 years, amortized cost	6,599
Held to maturity, 1 to 5 years, fair value	6,624
Held to maturity, 6 to 10 years, amortized cost	2,520
Held to maturity, 6 to 10 years, fair value	2,544
Held to maturity, over 10 years, amortized cost	23,364
Held to maturity, over 10 years, fair value	23,610
Held to maturity, amortized cost	36,608
Held to maturity, fair value	36,901
Asset-backed securities, student loans
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	72
Available for sale, under 1 year, fair value	72
Available for sale, 1 to 5 years, amortized cost	185
Available for sale, 1 to 5 years, fair value	184
Available for sale, 6 to 10 years, amortized cost	96
Available for sale, 6 to 10 years, fair value	96
Available for sale, over 10 years, amortized cost	180
Available for sale, over 10 years, fair value	179
Available for sale, amortized cost	533
Available for sale, fair value	531
Held to maturity, under 1 year, amortized cost	96
Held to maturity, under 1 year, fair value	92
Held to maturity, 1 to 5 years, amortized cost	207
Held to maturity, 1 to 5 years, fair value	206
Held to maturity, 6 to 10 years, amortized cost	408
Held to maturity, 6 to 10 years, fair value	402
Held to maturity, over 10 years, amortized cost	3,072
Held to maturity, over 10 years, fair value	3,051
Held to maturity, amortized cost	3,783
Held to maturity, fair value	3,751
Asset-backed securities, credit cards
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	0
Available for sale, under 1 year, fair value	0
Available for sale, 1 to 5 years, amortized cost	0
Available for sale, 1 to 5 years, fair value	0
Available for sale, 6 to 10 years, amortized cost	90
Available for sale, 6 to 10 years, fair value	89
Available for sale, over 10 years, amortized cost	0
Available for sale, over 10 years, fair value	0
Available for sale, amortized cost	90
Available for sale, fair value	89
Asset-backed securities, collateralized loan obligations
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	0
Available for sale, under 1 year, fair value	0
Available for sale, 1 to 5 years, amortized cost	745
Available for sale, 1 to 5 years, fair value	745
Available for sale, 6 to 10 years, amortized cost	959
Available for sale, 6 to 10 years, fair value	958
Available for sale, over 10 years, amortized cost	117
Available for sale, over 10 years, fair value	117
Available for sale, amortized cost	1,821
Available for sale, fair value	1,820
Total asset-backed securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	72
Available for sale, under 1 year, fair value	72
Available for sale, 1 to 5 years, amortized cost	930
Available for sale, 1 to 5 years, fair value	929
Available for sale, 6 to 10 years, amortized cost	1,145
Available for sale, 6 to 10 years, fair value	1,143
Available for sale, over 10 years, amortized cost	297
Available for sale, over 10 years, fair value	296
Available for sale, amortized cost	2,444
Available for sale, fair value	2,440
Held to maturity, under 1 year, amortized cost	96
Held to maturity, under 1 year, fair value	92
Held to maturity, 1 to 5 years, amortized cost	207
Held to maturity, 1 to 5 years, fair value	206
Held to maturity, 6 to 10 years, amortized cost	408
Held to maturity, 6 to 10 years, fair value	402
Held to maturity, over 10 years, amortized cost	3,072
Held to maturity, over 10 years, fair value	3,051
Held to maturity, amortized cost	3,783
Held to maturity, fair value	3,751
Non-U.S. debt securities, mortgage-backed securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	430
Available for sale, under 1 year, fair value	430
Available for sale, 1 to 5 years, amortized cost	568
Available for sale, 1 to 5 years, fair value	569
Available for sale, 6 to 10 years, amortized cost	196
Available for sale, 6 to 10 years, fair value	196
Available for sale, over 10 years, amortized cost	784
Available for sale, over 10 years, fair value	785
Available for sale, amortized cost	1,978
Available for sale, fair value	1,980
Held to maturity, under 1 year, amortized cost	16
Held to maturity, under 1 year, fair value	16
Held to maturity, 1 to 5 years, amortized cost	33
Held to maturity, 1 to 5 years, fair value	33
Held to maturity, 6 to 10 years, amortized cost	4
Held to maturity, 6 to 10 years, fair value	4
Held to maturity, over 10 years, amortized cost	313
Held to maturity, over 10 years, fair value	390
Held to maturity, amortized cost	366
Held to maturity, fair value	443
Non-U.S. debt securities, asset-backed securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	487
Available for sale, under 1 year, fair value	487
Available for sale, 1 to 5 years, amortized cost	981
Available for sale, 1 to 5 years, fair value	981
Available for sale, 6 to 10 years, amortized cost	366
Available for sale, 6 to 10 years, fair value	366
Available for sale, over 10 years, amortized cost	345
Available for sale, over 10 years, fair value	345
Available for sale, amortized cost	2,179
Available for sale, fair value	2,179
Non-U.S. debt securities, government securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	4,183
Available for sale, under 1 year, fair value	4,183
Available for sale, 1 to 5 years, amortized cost	7,270
Available for sale, 1 to 5 years, fair value	7,381
Available for sale, 6 to 10 years, amortized cost	791
Available for sale, 6 to 10 years, fair value	809
Available for sale, over 10 years, amortized cost	0
Available for sale, over 10 years, fair value	0
Available for sale, amortized cost	12,244
Available for sale, fair value	12,373
Held to maturity, under 1 year, amortized cost	328
Held to maturity, under 1 year, fair value	328
Held to maturity, 1 to 5 years, amortized cost	0
Held to maturity, 1 to 5 years, fair value	0
Held to maturity, 6 to 10 years, amortized cost	0
Held to maturity, 6 to 10 years, fair value	0
Held to maturity, over 10 years, amortized cost	0
Held to maturity, over 10 years, fair value	0
Held to maturity, amortized cost	328
Held to maturity, fair value	328
Non-U.S. debt securities, other
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	883
Available for sale, under 1 year, fair value	884
Available for sale, 1 to 5 years, amortized cost	6,634
Available for sale, 1 to 5 years, fair value	6,689
Available for sale, 6 to 10 years, amortized cost	1,057
Available for sale, 6 to 10 years, fair value	1,063
Available for sale, over 10 years, amortized cost	19
Available for sale, over 10 years, fair value	22
Available for sale, amortized cost	8,593
Available for sale, fair value	8,658
Total non-U.S. debt securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	5,983
Available for sale, under 1 year, fair value	5,984
Available for sale, 1 to 5 years, amortized cost	15,453
Available for sale, 1 to 5 years, fair value	15,620
Available for sale, 6 to 10 years, amortized cost	2,410
Available for sale, 6 to 10 years, fair value	2,434
Available for sale, over 10 years, amortized cost	1,148
Available for sale, over 10 years, fair value	1,152
Available for sale, amortized cost	24,994
Available for sale, fair value	25,190
Held to maturity, under 1 year, amortized cost	344
Held to maturity, under 1 year, fair value	344
Held to maturity, 1 to 5 years, amortized cost	33
Held to maturity, 1 to 5 years, fair value	33
Held to maturity, 6 to 10 years, amortized cost	4
Held to maturity, 6 to 10 years, fair value	4
Held to maturity, over 10 years, amortized cost	313
Held to maturity, over 10 years, fair value	390
Held to maturity, amortized cost	694
Held to maturity, fair value	771
State and political subdivisions
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	236
Available for sale, under 1 year, fair value	238
Available for sale, 1 to 5 years, amortized cost	622
Available for sale, 1 to 5 years, fair value	635
Available for sale, 6 to 10 years, amortized cost	526
Available for sale, 6 to 10 years, fair value	554
Available for sale, over 10 years, amortized cost	341
Available for sale, over 10 years, fair value	356
Available for sale, amortized cost	1,725
Available for sale, fair value	1,783
Collateralized mortgage obligations
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	0
Available for sale, under 1 year, fair value	0
Available for sale, 1 to 5 years, amortized cost	0
Available for sale, 1 to 5 years, fair value	0
Available for sale, 6 to 10 years, amortized cost	0
Available for sale, 6 to 10 years, fair value	0
Available for sale, over 10 years, amortized cost	104
Available for sale, over 10 years, fair value	104
Available for sale, amortized cost	104
Available for sale, fair value	104
Held to maturity, under 1 year, amortized cost	2
Held to maturity, under 1 year, fair value	3
Held to maturity, 1 to 5 years, amortized cost	283
Held to maturity, 1 to 5 years, fair value	287
Held to maturity, 6 to 10 years, amortized cost	13
Held to maturity, 6 to 10 years, fair value	13
Held to maturity, over 10 years, amortized cost	399
Held to maturity, over 10 years, fair value	431
Held to maturity, amortized cost	697
Held to maturity, fair value	734
Other U.S. debt securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	759
Available for sale, under 1 year, fair value	760
Available for sale, 1 to 5 years, amortized cost	2,056
Available for sale, 1 to 5 years, fair value	2,083
Available for sale, 6 to 10 years, amortized cost	126
Available for sale, 6 to 10 years, fair value	130
Available for sale, over 10 years, amortized cost	0
Available for sale, over 10 years, fair value	0
Available for sale, amortized cost	2,941
Available for sale, fair value	$ 2,973

Investment Securities - Gains a

Investment Securities - Gains and Losses Related to Investment Securities (Details) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Gross realized gains from sales of AFS investment securities	$ 31	$ 205	$ 74
Gross realized losses from sales of AFS investment securities	(32)	(196)	(113)
Gross losses from OTTI	0	(3)	0
Gains (losses) related to investment securities, net	(1)	6	(39)
Impairment associated with adverse changes in timing of expected future cash flows	0	(3)	0
Net impairment losses	$ 0	$ (3)	$ 0

Investment Securities - Sched_4

Investment Securities - Schedule of Credit-Related Loss Activity Recognized In Earnings (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance, beginning of period	$ 78	$ 77	$ 79
Other-than-temporary-impairment recognized	0	3	0
Realized losses on securities sold or matured	(8)	(2)	(2)
Balance, end of period	$ 70	$ 78	$ 77

Loans - Net Loans (Details)

Loans - Net Loans (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 26,309	$ 25,789
Allowance for loan losses	(74)	(67)	$ (54)	$ (53)
Loans, net of allowance	26,235	25,722
Overdrafts	3,256	5,444
Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	20,528	20,353
Foreign
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	5,781	5,436
Loans to investment funds \| Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	14,546	15,050
Loans to investment funds \| Foreign
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	4,662	4,505
Senior secured bank loans \| Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	3,342	3,490
Senior secured bank loans \| Foreign
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,119	931
Loans to municipalities \| Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	848	902
Other \| Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	26	37
Commercial real estate \| Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 1,766	$ 874

Loans - Narrative (Details)

Loans - Narrative (Details) $ in Millions	12 Months Ended
Loans - Narrative (Details) $ in Millions	Dec. 31, 2019USD ($)loan_segmentcontractloan	Dec. 31, 2018USD ($)contractloan
Financing Receivable, Credit Quality Indicator [Line Items]
Number of loans and leases segments \| loan_segment	2
Loans and leases pledged as collateral \| $	$ 6,750	$ 6,510
Loans modified in troubled debt restructurings \| contract	0	0
Number of loans on non-accrual status	0	0
Loans 30 days or more contractually past due	0	0

Loans - Recorded Investment in

Loans - Recorded Investment in Each Class of Total Loans by Credit Quality Indicator (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 26,309	$ 25,789
Loans, allowance for losses	74	67	$ 54	$ 53
Commercial and Financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	24,543	24,915
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,766	874
Investment grade
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	21,267	20,473
Investment grade \| Commercial and Financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	19,501	19,599
Investment grade \| Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,766	874
Speculative
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	5,008	5,308
Speculative \| Commercial and Financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	5,008	5,308
Speculative \| Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	0	0
Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	25
Special mention \| Commercial and Financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	25
Special mention \| Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	0
Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	9	8
Substandard \| Commercial and Financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	9	8
Substandard \| Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	0	0
Individually evaluated for impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	25	8
Individually evaluated for impairment \| Commercial and Financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	25	8
Loans, allowance for losses	1
Individually evaluated for impairment \| Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	0	0
Collectively evaluated for impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	26,284	25,781
Collectively evaluated for impairment \| Commercial and Financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	24,518	24,907
Collectively evaluated for impairment \| Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 1,766	$ 874

Loans - Schedule of Activity In

Loans - Schedule of Activity In The Allowance For Loan Losses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 67	$ 54	$ 53
Provision for loan losses	10	15	2
Charge-offs	(3)	(2)	(1)
Ending balance	$ 74	$ 67	$ 54

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Amortization of other intangible assets	$ 236	$ 226	$ 214
Client relationships \| Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	5 years
Client relationships \| Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	20 years
Technology \| Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	3 years
Technology \| Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	10 years
Core deposits \| Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	16 years
Core deposits \| Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	22 years

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Changes In The Carrying Amount Of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Beginning balance	$ 7,446	$ 6,022
Acquisitions	122	1,512
Foreign currency translation	(12)	(88)
Ending balance	7,556	7,446
Decrease in intangible assets	(93)
Investment Servicing
Goodwill [Roll Forward]
Beginning balance	7,180	5,752
Acquisitions	122	1,512
Foreign currency translation	(13)	(84)
Ending balance	7,289	7,180
Decrease in intangible assets	(93)
Investment Management
Goodwill [Roll Forward]
Beginning balance	266	270
Acquisitions	0	0
Foreign currency translation	1	(4)
Ending balance	267	$ 266
Decrease in intangible assets	0
CRD Acquisition
Goodwill [Roll Forward]
Increase to goodwill	113
Decrease in intangible assets	$ (93)

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Changes In The Carrying Amount Of Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	$ 2,369	$ 1,613
Acquisitions		1,007
Acquisitions	(93)
Amortization	(236)	(226)	$ (214)
Foreign currency translation	(10)	(25)
Ending balance	2,030	2,369	1,613
Investment Servicing
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	2,218	1,432
Acquisitions		1,007
Acquisitions	(93)
Amortization	(207)	(196)
Foreign currency translation	(10)	(25)
Ending balance	1,908	2,218	1,432
Investment Management
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	151	181
Acquisitions		0
Acquisitions	0
Amortization	(29)	(30)
Foreign currency translation	0	0
Ending balance	122	$ 151	$ 181
CRD Acquisition
Finite-lived Intangible Assets [Roll Forward]
Acquisitions	$ (93)

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Gross Carrying Amount, Accumulated Amortization And Net Carrying Amount Of Other Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 4,280	$ 4,430
Accumulated Amortization	(2,250)	(2,061)
Net Carrying Amount	2,030	2,369	$ 1,613
Client relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,104	3,262
Accumulated Amortization	(1,718)	(1,605)
Net Carrying Amount	1,386	1,657
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	403	389
Accumulated Amortization	(87)	(49)
Net Carrying Amount	316	340
Core deposits
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	673	676
Accumulated Amortization	(381)	(350)
Net Carrying Amount	292	326
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	100	103
Accumulated Amortization	(64)	(57)
Net Carrying Amount	$ 36	$ 46

Goodwill and Other Intangible_7

Goodwill and Other Intangible Assets - Amortization Expense (Details) $ in Millions	Dec. 31, 2019USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2020	$ 240
2021	230
2022	227
2023	226
2024	$ 220

Other Assets (Details)

Other Assets (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Other Assets [Abstract]
Securities borrowed	$ 18,524	$ 19,575
Derivative instruments, net	4,753	5,189
Bank-owned life insurance	3,395	3,323
Investments in joint ventures and other unconsolidated entities	2,899	2,882
Collateral, net	874	1,354
Right-of-use assets	858
Accounts receivable	432	308
Prepaid expenses	395	493
Receivable for securities settlement	336	531
Income taxes receivable	309	129
Deferred tax assets, net of valuation allowance	216	113
Deposits with clearing organizations	58	58
Other	962	834
Total	$ 34,011	$ 34,789

Deposits (Details)

Deposits (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Line Items]
Time deposits, at $250,000 or more	$ 35,150	$ 46,400
Demand deposit overdrafts	3,260	5,440
Non-U.S.
Loans and Leases Receivable Disclosure [Line Items]
Time deposits, at $250,000 or more	139	314
Wholesale CDs
Loans and Leases Receivable Disclosure [Line Items]
Time deposits, at $250,000 or more	3,000	4,520
Customer Deposits
Loans and Leases Receivable Disclosure [Line Items]
Time deposits, at $250,000 or more	$ 32,010	$ 41,570

Short-Term Borrowings - Narrati

Short-Term Borrowings - Narrative (Details)	Dec. 31, 2019USD ($)	Dec. 31, 2019CAD ($)	Dec. 31, 2018USD ($)
Short-term Debt [Line Items]
Weighted-average interest rate as of year-end	1.64%	1.64%	0.88%
Average balance of securities purchased under agreement to resell and securities sold under agreement to repurchase	$ 86,670,000,000		$ 35,740,000,000
Maximum borrowing on line of credit	1,080,000,000	$ 1,400,000,000
Balance on line of credit	0		$ 0
U.S. Government Securities Sold
Short-term Debt [Line Items]
Fair value of overnight maturity	$ 4,112,000,000

Short-Term Borrowings - Outstan

Short-Term Borrowings - Outstanding and weighted-average interest rates of short-term borrowings (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Short-term Debt [Line Items]
Weighted-average interest rate as of year-end	1.64%	0.88%
Securities Sold Under Repurchase Agreements
Short-term Debt [Line Items]
Balance as of December 31		$ 1,102	$ 1,082	$ 2,842
Maximum outstanding as of any month-end	$ 4,125	3,441	4,302
Average outstanding during the year	$ 1,616	$ 2,048	$ 3,683
Weighted-average interest rate as of year-end	0.00%	1.38%	0.03%
Weighted-average interest rate during the year	1.90%	0.62%	0.05%
Tax-Exempt Investment Program
Short-term Debt [Line Items]
Balance as of December 31		$ 823	$ 931	1,078
Maximum outstanding as of any month-end	$ 931	1,078	1,158
Average outstanding during the year	$ 898	$ 1,023	$ 1,127
Weighted-average interest rate as of year-end	1.75%	1.74%	1.45%
Weighted-average interest rate during the year	1.51%	1.46%	0.79%
Other
Short-term Debt [Line Items]
Balance as of December 31		$ 0	$ 2,000	$ 0
Maximum outstanding as of any month-end	$ 0	$ 2,000	0
Average outstanding during the year	$ 3		$ 1
Weighted-average interest rate as of year-end	0.00%	2.68%	0.00%
Weighted-average interest rate during the year	0.01%		0.00%

Short-Term Borrowings - Overnig

Short-Term Borrowings - Overnight maturity (Details) $ in Millions	Dec. 31, 2019USD ($)
U.S. Government Securities Sold
Short-term Debt [Line Items]
Amortized cost of overnight maturity	$ 3,891
Fair value of overnight maturity	4,112
Repurchase Agreements
Short-term Debt [Line Items]
Amortized cost of overnight maturity	$ 1,102

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long Term Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Long-term finance leases	$ 78	$ 102
Total long-term debt	12,509	11,093
Fair Value Hedges
Debt Instrument [Line Items]
Decrease in carrying value of long-term debt	$ 157	157
Senior notes \| 3.55% notes due 2025
Debt Instrument [Line Items]
Interest rate on debt	3.55%
Senior notes \| 2.55% notes due 2020
Debt Instrument [Line Items]
Interest rate on debt	2.55%
Senior notes \| 3.7% notes due in 2023
Debt Instrument [Line Items]
Interest rate on debt	3.70%
Senior notes \| 3.3% notes due 2024
Debt Instrument [Line Items]
Interest rate on debt	3.30%
Senior notes \| 2.354% Notes Due 2025
Debt Instrument [Line Items]
Interest rate on debt	2.354%
Senior notes \| 2.653% notes due 2023
Debt Instrument [Line Items]
Interest rate on debt	2.653%
Senior notes \| 4.375% notes due 2021
Debt Instrument [Line Items]
Interest rate on debt	4.375%
Senior notes \| 1.95% Notes Due 2021
Debt Instrument [Line Items]
Interest rate on debt	1.95%
Senior notes \| 2.65% notes due 2026
Debt Instrument [Line Items]
Interest rate on debt	2.65%
Senior notes \| 4.141% Notes Due 2029
Debt Instrument [Line Items]
Interest rate on debt	4.141%
Senior notes \| 3.776% Notes Due 2024
Debt Instrument [Line Items]
Interest rate on debt	3.776%
Senior notes \| 7.35% notes due 2026
Debt Instrument [Line Items]
Interest rate on debt	7.35%
Subordinated notes \| 3.1% subordinated notes due 2023
Debt Instrument [Line Items]
Interest rate on debt	3.10%
Subordinated notes \| 3.031% Notes Due 2034
Debt Instrument [Line Items]
Interest rate on debt	3.031%
Parent Company and Non-banking Subsidiaries \| Senior notes \| 3.55% notes due 2025
Debt Instrument [Line Items]
Long-term debt	$ 1,331	1,268
Parent Company and Non-banking Subsidiaries \| Senior notes \| 2.55% notes due 2020
Debt Instrument [Line Items]
Long-term debt	1,191	1,177
Parent Company and Non-banking Subsidiaries \| Senior notes \| 3.7% notes due in 2023
Debt Instrument [Line Items]
Long-term debt	1,037	1,006
Parent Company and Non-banking Subsidiaries \| Senior notes \| 3.3% notes due 2024
Debt Instrument [Line Items]
Long-term debt	1,022	979
Parent Company and Non-banking Subsidiaries \| Senior notes \| 2.354% Notes Due 2025
Debt Instrument [Line Items]
Long-term debt	991	0
Parent Company and Non-banking Subsidiaries \| Senior notes \| 2.653% notes due 2023
Debt Instrument [Line Items]
Long-term debt	753	734
Parent Company and Non-banking Subsidiaries \| Senior notes \| 4.375% notes due 2021
Debt Instrument [Line Items]
Long-term debt	748	731
Parent Company and Non-banking Subsidiaries \| Senior notes \| 1.95% Notes Due 2021
Debt Instrument [Line Items]
Long-term debt	744	725
Parent Company and Non-banking Subsidiaries \| Senior notes \| 2.65% notes due 2026
Debt Instrument [Line Items]
Long-term debt	741	698
Parent Company and Non-banking Subsidiaries \| Senior notes \| 4.141% Notes Due 2029
Debt Instrument [Line Items]
Long-term debt	546	513
Parent Company and Non-banking Subsidiaries \| Senior notes \| 3.776% Notes Due 2024
Debt Instrument [Line Items]
Long-term debt	522	507
Parent Company and Non-banking Subsidiaries \| Senior notes \| Floating-rate notes due 2020
Debt Instrument [Line Items]
Long-term debt	500	499
Parent Company and Non-banking Subsidiaries \| Senior notes \| 7.35% notes due 2026
Debt Instrument [Line Items]
Long-term debt	150	150
Parent Company and Non-banking Subsidiaries \| Subordinated notes \| 3.1% subordinated notes due 2023
Debt Instrument [Line Items]
Long-term debt	1,006	972
Parent Company and Non-banking Subsidiaries \| Subordinated notes \| 3.031% Notes Due 2034
Debt Instrument [Line Items]
Long-term debt	492	0
Parent Company and Non-banking Subsidiaries \| Junior subordinated debentures \| Floating Rate Subordinated Debentures Due 2047
Debt Instrument [Line Items]
Long-term debt	499	794
Parent Company and Non-banking Subsidiaries \| Junior subordinated debentures \| Floating-rate subordinated notes due to State Street Capital Trust I in 2028
Debt Instrument [Line Items]
Long-term debt	100	150
State Street Bank
Debt Instrument [Line Items]
Long-term finance leases	$ 136	$ 190

Long-Term Debt - Narrative (Det

Long-Term Debt - Narrative (Details) - USD ($)	Nov. 20, 2019	Nov. 19, 2019	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Long-term finance leases			$ 78,000,000	$ 102,000,000
State Street Bank
Debt Instrument [Line Items]
Long-term finance leases			136,000,000	$ 190,000,000
Floating Rate Subordinated Debentures Due 2047 \| Junior subordinated debentures
Debt Instrument [Line Items]
Amount redeemed			297,000,000
Aggregate principal amount			800,000,000
Gain on redemption			44,000,000
Floating-rate subordinated notes due to State Street Capital Trust I in 2028 \| Junior subordinated debentures
Debt Instrument [Line Items]
Amount redeemed			50,000,000
Aggregate principal amount			$ 150,000,000
Replacement Capital Covenant
Debt Instrument [Line Items]
Amount redeemed	$ 50,000,000
Period prior to date of repayment		180 days
2.65% notes due 2026 \| Senior notes
Debt Instrument [Line Items]
Interest rate on debt			2.65%

Derivative Financial Instrume_3

Derivative Financial Instruments - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Fair value of derivative liabilities	$ 15,381	$ 16,807
Interest rate swap \| Fair Value Hedges
Derivative [Line Items]
Notional amount of derivative instruments	10,200	$ 9,300
Credit swap agreements
Derivative [Line Items]
Fair value of derivative liabilities	2,030
Cash collateral provided for derivative instruments	710
Maximum additional amount of payments related to termination events	$ 1,320
Floating-rate loans
Derivative [Line Items]
Term of debt instrument	4 years 8 months 12 days

Derivative Financial Instrume_4

Derivative Financial Instruments - Schedule of Outstanding Hedges: (Notional Amount) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Derivatives not designated as hedging instruments \| Interest rate contracts \| Futures
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	$ 4,368	$ 2,348
Derivatives not designated as hedging instruments \| Foreign exchange contracts \| Futures
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	1,040	49
Derivatives not designated as hedging instruments \| Foreign exchange contracts \| Forward, swap and spot
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	2,378,808	2,238,819
Derivatives not designated as hedging instruments \| Foreign exchange contracts \| Options purchased
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	1,581	578
Derivatives not designated as hedging instruments \| Foreign exchange contracts \| Options written
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	1,110	576
Derivatives not designated as hedging instruments \| Other derivative contracts \| Stable value contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	26,895	26,634
Derivatives not designated as hedging instruments \| Other derivative contracts \| Deferred value awards
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	389	434
Derivatives designated as hedging instruments \| Interest rate contracts \| Swap agreements
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	15,196	10,596
Derivatives designated as hedging instruments \| Foreign exchange contracts \| Forward and swap
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	$ 3,176	$ 3,412

Derivative Financial Instrume_5

Derivative Financial Instruments - Schedule of The Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	$ 15,148	$ 16,399
Fair value of derivative liabilities	15,381	16,807
Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	15,140	16,386
Fair value of derivative liabilities	15,150	16,522
Interest rate contracts
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	8	13
Fair value of derivative liabilities	49	71
Derivatives not designated as hedging instruments \| Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	15,140	16,369
Derivatives not designated as hedging instruments \| Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	15,236	16,648
Derivatives not designated as hedging instruments \| Foreign exchange contracts \| Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	15,140	16,369
Derivatives not designated as hedging instruments \| Foreign exchange contracts \| Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	15,054	16,434
Derivatives not designated as hedging instruments \| Other derivative contracts \| Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	0	0
Derivatives not designated as hedging instruments \| Other derivative contracts \| Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	182	214
Derivatives designated as hedging instruments \| Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	8	30
Derivatives designated as hedging instruments \| Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	145	159
Derivatives designated as hedging instruments \| Foreign exchange contracts \| Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	0	17
Derivatives designated as hedging instruments \| Foreign exchange contracts \| Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	96	88
Derivatives designated as hedging instruments \| Interest rate contracts \| Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	8	13
Derivatives designated as hedging instruments \| Interest rate contracts \| Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	$ 49	$ 71

Derivative Financial Instrume_6

Derivative Financial Instruments - Impact of Derivatives on Consolidated Statement of Income (Details) - Derivatives not designated as hedging instruments - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income		$ 269	$ 509	$ 474
Foreign exchange contracts \| Foreign exchange trading services
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income		630	723	632
Foreign exchange contracts \| Software and processing fees
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income		0	0	(23)
Foreign exchange contracts \| Interest expense
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income		(153)	(41)	0
Interest rate contracts \| Foreign exchange trading services
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income		(3)	(6)	8
Interest rate contracts \| Software and processing fees
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income		0	(1)	0
Other derivative contracts \| Foreign exchange trading services
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income		0	5	0
Other derivative contracts \| Compensation and employee benefits
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income		$ (205)	$ (171)	$ (143)
Swap agreements \| Interest rate contracts \| Software and processing fees
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	$ 15

Derivative Financial Instrume_7

Derivative Financial Instruments - Carrying Amount and Cumulative Basis Adjustments for Hedge Accounting (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Hedged Items Currently Designated
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying Amount of Assets	$ 10,709,000,000	$ 9,766,000,000
Cumulative Hedge Accounting Basis Adjustments	213,000,000	(65,000,000)
Hedged Items Currently Designated \| Long-term debt
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying Amount of Assets	9,769,000,000	8,270,000,000
Cumulative Hedge Accounting Basis Adjustments	164,000,000	(137,000,000)
Hedged Items Currently Designated \| Investment securities available-for-sale
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying Amount of Assets	940,000,000	1,496,000,000
Cumulative Hedge Accounting Basis Adjustments	49,000,000	72,000,000
Hedged Items Currently Designated \| Investment securities
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying Amount of Assets	0	458,000,000
Hedged Items No Longer Designated
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying Amount of Assets	1,199,000,000	1,247,000,000
Cumulative Hedge Accounting Basis Adjustments	(8,000,000)	(19,000,000)
Hedged Items No Longer Designated \| Long-term debt
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying Amount of Assets	1,199,000,000	1,197,000,000
Cumulative Hedge Accounting Basis Adjustments	(8,000,000)	(20,000,000)
Hedged Items No Longer Designated \| Investment securities available-for-sale
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying Amount of Assets	0	50,000,000
Cumulative Hedge Accounting Basis Adjustments	$ 0	$ 1,000,000

Derivative Financial Instrume_8

Derivative Financial Instruments - Impact on Derivatives and Hedged Items on Consolidated Statement of Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income	$ 262	$ (429)	$ 645
Amount of Gain (Loss) on Hedged Item Recognized in Consolidated Statement of Income	(253)	419	(642)
Net unrealized gains (losses) on available-for-sale securities designated in fair value hedges, net of related taxes	18	24	22
Investment securities \| Software and processing fees \| Foreign exchange contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income	0	(74)	18
Amount of Gain (Loss) on Hedged Item Recognized in Consolidated Statement of Income	0	74	(18)
Foreign exchange deposit \| Software and processing fees \| Foreign exchange contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income	0	(328)	626
Amount of Gain (Loss) on Hedged Item Recognized in Consolidated Statement of Income	0	328	(626)
Investment securities available-for-sale \| Software and processing fees \| Interest rate contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income	0	0	39
Amount of Gain (Loss) on Hedged Item Recognized in Consolidated Statement of Income	0	0	(37)
Investment securities available-for-sale \| Net interest income \| Interest rate contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income	(4)	31	0
Amount of Gain (Loss) on Hedged Item Recognized in Consolidated Statement of Income	2	(32)	0
Long-term debt \| Software and processing fees \| Interest rate contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income	0	0	(38)
Amount of Gain (Loss) on Hedged Item Recognized in Consolidated Statement of Income	0	0	39
Long-term debt \| Net interest income \| Interest rate contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income	266	(58)	0
Amount of Gain (Loss) on Hedged Item Recognized in Consolidated Statement of Income	$ (255)	$ 49	$ 0

Derivative Financial Instrume_9

Derivative Financial Instruments - Schedule of Differences Between the Gains (Losses) on the Derivative and The Gains (Losses) on the Hedged Item (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Gain (loss) on derivative recognized in OCI, cash flow hedge	$ 51	$ (24)	$ (118)
Gain (loss) on derivative recognized in OCI, net investment hedge	30	81	(160)
Amount of Gain or (Loss) Recognized in Other Comprehensive Income on Derivative	81	57	(278)
Gain (loss) on hedges reclassified to income, cash flow hedge	17	26	26
Gain (loss) on hedges reclassified to income, net investment hedge	0	0	0
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	17	26	26
Interest rate contracts
Derivative [Line Items]
Gain (loss) on derivative recognized in OCI, cash flow hedge	8	(12)	(14)
Interest rate contracts \| Net interest revenue
Derivative [Line Items]
Gain (loss) on hedges reclassified to income, cash flow hedge	(10)	(1)	2
Foreign exchange contracts
Derivative [Line Items]
Gain (loss) on derivative recognized in OCI, cash flow hedge	43	(12)	(104)
Gain (loss) on derivative recognized in OCI, net investment hedge	30	81	(160)
Foreign exchange contracts \| Net interest revenue
Derivative [Line Items]
Gain (loss) on hedges reclassified to income, cash flow hedge	27	27	24
Foreign exchange contracts \| Gains (Losses) related to investment securities, net
Derivative [Line Items]
Gain (loss) on hedges reclassified to income, net investment hedge	$ 0	$ 0	$ 0

Offsetting Arrangements - Narra

Offsetting Arrangements - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Offsetting [Abstract]
Fair Value of securities received as collateral that can be resold or repledged	$ 10,090,000	$ 11,690,000
Fair Value of securities received as collateral that have been resold or repledged	$ 5,720,000	$ 5,310

Offsetting Arrangements - Asset

Offsetting Arrangements - Assets With Offsetting Arrangements (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Offsetting Assets [Line Items]
Derivatives, Gross Amounts of Recognized Assets	$ 15,148	$ 16,399
Derivatives, Gross Amounts Offset in Statement of Condition	(10,395)	(11,210)
Derivatives, Net Amounts of Assets Presented in Statement of Condition	4,753	5,189
Derivatives, Net Amount	4,068	4,969
Derivatives, Cash collateral and securities netting, cash offset	(2,310)	(987)
Derivatives, Cash collateral and securities netting, Cash and Securities Received	(685)	(220)
Derivatives, Cash collateral and securities netting, Net Amount	(2,995)	(1,207)
Resale agreements and securities borrowing, Gross Amounts of Recognized Assets	179,989	116,143
Resale agreements and securities borrowing, Gross Amounts Offset in Statement of Condition	159,978	91,889
Resale agreements and securities borrowing, Net Amounts of Assets Presented in Statement of Condition	20,011	24,254
Resale agreements and securities borrowing, Cash and Securities Received	(19,572)	(22,872)
Resale agreements and securities borrowing, Net Amount	439	1,382
Total derivatives and other financial instruments, Gross Amounts of Recognized Assets	195,137	132,542
Total derivatives and other financial instruments, Gross Amounts Offset in Statement of Condition	(170,373)	(103,099)
Total derivatives and other financial instruments, Net Amounts of Assets Presented in Statement of Condition	24,764	29,443
Total derivatives and other financial instruments, Cash and Securities Received	(20,257)	(23,092)
Total derivatives and other financial instruments, Net Amount	4,507	6,351
Securities purchased under resale agreements	1,487	4,679
Cash collateral provided for securities borrowing	18,520	19,580
Foreign exchange contracts
Offsetting Assets [Line Items]
Derivatives, Gross Amounts of Recognized Assets	15,140	16,386
Derivatives, Gross Amounts Offset in Statement of Condition	(8,081)	(10,223)
Derivatives, Net Amounts of Assets Presented in Statement of Condition	7,059	6,163
Derivatives, Net Amount	7,059	6,163
Interest rate contracts
Offsetting Assets [Line Items]
Derivatives, Gross Amounts of Recognized Assets	8	13
Derivatives, Gross Amounts Offset in Statement of Condition	(4)	0
Derivatives, Net Amounts of Assets Presented in Statement of Condition	4	13
Derivatives, Net Amount	$ 4	$ 13

Offsetting Arrangements - Liabi

Offsetting Arrangements - Liabilities With Offsetting Arrangements (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Offsetting Liabilities [Line Items]
Derivatives, Gross amounts of recognized liabilities	$ 15,381	$ 16,807
Derivatives, Gross amounts offset in statement of condition	(8,922)	(11,564)
Derivatives, Net Amounts of Liabilities Presented in Statement of Condition	6,459	5,243
Derivative, Net Amount	5,902	5,028
Derivative liability, collateral, cash offset	(837)	(1,341)
Derivatives, Cash and collateral securities netting, Cash and Securities Provided	(557)	(215)
Derivatives, Cash and collateral securities netting, Net	(1,394)	(1,556)
Resale agreements and securities lending, Gross Amounts of Recognized Liabilities(1)(2)	171,853	104,494
Resale agreements and securities lending, Gross Amounts Offset in Statement of Condition(3)	(159,977)	(91,889)
Resale agreements and securities lending, Net Amounts of Liabilities Presented in Statement of Condition	11,876	12,605
Resale agreements and securities lending, Cash and Securities Provided	(10,793)	(11,543)
Resale agreements and securities lending, Net Amount	1,083	1,062
Total derivatives and other financial instruments, Gross Amounts of Recognized Liabilities	187,234	121,301
Total derivatives and other financial instruments, Gross Amounts Offset in Statement of Condition	(168,899)	(103,453)
Total derivatives and other financial instruments, Net Amounts of Liabilities Presented in Statement of Condition	18,335	17,848
Total derivatives and other financial instruments, Cash and Securities Provided	(11,350)	(11,758)
Total derivatives and other financial instruments, Net Amount	6,985	6,090
Securities sold under repurchase agreements	1,102	1,082
Foreign exchange contracts
Offsetting Liabilities [Line Items]
Derivatives, Gross amounts of recognized liabilities	15,150	16,522
Derivatives, Gross amounts offset in statement of condition	(8,081)	(10,223)
Derivatives, Net Amounts of Liabilities Presented in Statement of Condition	7,069	6,299
Derivative, Net Amount	7,069	6,299
Interest rate contracts
Offsetting Liabilities [Line Items]
Derivatives, Gross amounts of recognized liabilities	49	71
Derivatives, Gross amounts offset in statement of condition	(4)	0
Derivatives, Net Amounts of Liabilities Presented in Statement of Condition	45	71
Derivative, Net Amount	45	71
Other derivative contracts
Offsetting Liabilities [Line Items]
Derivatives, Gross amounts of recognized liabilities	182	214
Derivatives, Gross amounts offset in statement of condition	0	0
Derivatives, Net Amounts of Liabilities Presented in Statement of Condition	182	214
Derivative, Net Amount	182	214
Accrued expenses and other liabilities
Offsetting Liabilities [Line Items]
Cash collateral received in connection to securities finance activities	$ 10,770	$ 11,520

Offsetting Arrangements - Repo,

Offsetting Arrangements - Repo, Sec Lending Transactions Maturity By Category (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	$ 156,465	$ 88,904
Securities lending transactions	15,388	15,590
Gross amount of recognized liabilities for repurchase agreements and securities lending	171,853	104,494
U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	156,465	88,904
Securities lending transactions	15	249
Corporate debt securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	354	278
Equity securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	7,519	6,563
Other
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	7,500	8,500
Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	156,465	88,904
Securities lending transactions	15,258	15,453
Gross amount of recognized liabilities for repurchase agreements and securities lending	171,723	104,357
Overnight and Continuous \| U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	156,465	88,904
Securities lending transactions	15	249
Overnight and Continuous \| Corporate debt securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	354	278
Overnight and Continuous \| Equity securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	7,389	6,426
Overnight and Continuous \| Other
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	7,500	8,500
Up to 30 Days
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	0	0
Securities lending transactions	0	137
Gross amount of recognized liabilities for repurchase agreements and securities lending	0	137
Up to 30 Days \| U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	0	0
Securities lending transactions	0	0
Up to 30 Days \| Corporate debt securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	0	0
Up to 30 Days \| Equity securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	0	137
Up to 30 Days \| Other
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	0	0
Greater than 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	0	0
Securities lending transactions	130	0
Gross amount of recognized liabilities for repurchase agreements and securities lending	130	0
Greater than 90 Days \| U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	0	0
Securities lending transactions	0	0
Greater than 90 Days \| Corporate debt securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	0	0
Greater than 90 Days \| Equity securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	130	0
Greater than 90 Days \| Other
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	$ 0	$ 0

Commitments and Guarantees - Co

Commitments and Guarantees - Contractual Amounts of Credit-Related Off-Balance Sheet Financial Instruments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Unfunded credit facilities	$ 29,697	$ 28,951
Indemnified securities financing	367,901	342,337
Standby letters of credit	$ 3,324	$ 2,985
Unfunded commitments to extend credit, short term	73.00%
Term of unfunded commitment	1 year

Commitments and Guarantees - Na

Commitments and Guarantees - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Loss Contingencies [Line Items]
Cash collateral provided for securities lending	$ 18,520	$ 19,580
Accrued expenses and other liabilities
Loss Contingencies [Line Items]
Cash collateral received in connection to securities finance activities	$ 10,770	$ 11,520

Commitments and Guarantees - Sc

Commitments and Guarantees - Schedule Of Repurchase Agreements (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Fair value of indemnified securities financing	$ 367,901	$ 342,337
Fair value of cash and securities held by us, as agent, as collateral for indemnified securities financing	385,428	357,893
Fair value of collateral for indemnified securities financing invested in indemnified repurchase agreements	45,658	42,610
Fair value of cash and securities held by us or our agents as collateral for investments in indemnified repurchase agreements	$ 48,887	$ 45,064

Contingencies (Details)

Contingencies (Details) - USD ($) $ in Millions	1 Months Ended
Contingencies (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jan. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Loss Contingencies [Line Items]
Accrual of loss contingency			$ 146
Estimate of possible loss			50
Payments for settlements	$ 48.8
Unrecognized tax benefits			149	$ 108	$ 94	$ 71
Invoicing Matter
Loss Contingencies [Line Items]
Amount awarded to other party	$ 5.5	$ 40
Legal Reserve \| Invoicing Matter
Loss Contingencies [Line Items]
Estimate of possible loss			$ 380

Variable Interest Entities (Det

Variable Interest Entities (Details) - USD ($)	12 Months Ended
Variable Interest Entities (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
Variable interest entity, other short-term borrowings	$ 820,000,000	$ 930,000,000
Weighted average life of trusts	3 years	3 years 7 months 6 days
Total standby bond purchase agreement committed to trusts	$ 823,000,000
VIE - primary beneficiary
Variable Interest Entity [Line Items]
Assets	21,000,000
Liabilities	5,000,000
Potential maximum loss exposure of unconsolidated funds	15,000,000	$ 0
VIE - not primary beneficiary
Variable Interest Entity [Line Items]
Potential maximum loss exposure of unconsolidated funds	41,000,000	70,000,000
State and political subdivisions, securities in trusts
Variable Interest Entity [Line Items]
Investment securities related to state and political subdivisions	$ 940,000,000	$ 1,050,000,000

Shareholders' Equity - Schedule

Shareholders' Equity - Schedule of Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended					12 Months Ended
	Sep. 30, 2018	Apr. 30, 2016	May 31, 2015	Feb. 28, 2014	Aug. 31, 2012	Dec. 31, 2019	Dec. 15, 2019	Dec. 31, 2018
Series C Preferred Stock, Depository Share
Class of Stock [Line Items]
Depositary shares issued (shares)					20,000,000
Liquidation preference per share (USD per share)					$ 25
Series C Preferred Stock
Class of Stock [Line Items]
Ownership Interest Per Depositary Share					0.025%
Liquidation preference per share (USD per share)					$ 100,000
Per annum dividend rate						5.25%
Preferred stock						$ 491		$ 491
Series D Preferred Stock, Depository Share
Class of Stock [Line Items]
Depositary shares issued (shares)				30,000,000
Liquidation preference per share (USD per share)				$ 25
Series D Preferred Stock
Class of Stock [Line Items]
Ownership Interest Per Depositary Share				0.025%
Liquidation preference per share (USD per share)				$ 100,000
Per annum dividend rate						5.90%
Preferred stock						$ 742		742
Series E Preferred Stock, Depository Share
Class of Stock [Line Items]
Liquidation preference per share (USD per share)							$ 25
Series E Preferred Stock
Class of Stock [Line Items]
Liquidation preference per share (USD per share)							$ 100,000
Preferred stock						$ 0		728
Series F Preferred Stock, Depository Share
Class of Stock [Line Items]
Depositary shares issued (shares)			750,000
Liquidation preference per share (USD per share)			$ 1,000
Series F Preferred Stock
Class of Stock [Line Items]
Ownership Interest Per Depositary Share			1.00%
Liquidation preference per share (USD per share)			$ 100,000
Per annum dividend rate						5.25%
Preferred stock						$ 742		742
Series G Preferred Stock, Depository Share
Class of Stock [Line Items]
Depositary shares issued (shares)		20,000,000
Liquidation preference per share (USD per share)		$ 25
Series G Preferred Stock
Class of Stock [Line Items]
Ownership Interest Per Depositary Share		0.025%
Liquidation preference per share (USD per share)		$ 100,000
Per annum dividend rate						5.35%
Preferred stock						$ 493		493
Series H Preferred Stock, Depository Share
Class of Stock [Line Items]
Depositary shares issued (shares)	500,000
Liquidation preference per share (USD per share)	$ 1,000
Series H Preferred Stock
Class of Stock [Line Items]
Ownership Interest Per Depositary Share	1.00%
Liquidation preference per share (USD per share)	$ 100,000
Per annum dividend rate						5.625%
Preferred stock						$ 494		$ 494
London Interbank Offered Rate (LIBOR) \| Series D Preferred Stock
Class of Stock [Line Items]
Per annum dividend rate, basis spread on variable rate						3.108%
London Interbank Offered Rate (LIBOR) \| Series F Preferred Stock
Class of Stock [Line Items]
Per annum dividend rate, basis spread on variable rate						3.597%
London Interbank Offered Rate (LIBOR) \| Series G Preferred Stock
Class of Stock [Line Items]
Per annum dividend rate, basis spread on variable rate						3.709%
London Interbank Offered Rate (LIBOR) \| Series H Preferred Stock
Class of Stock [Line Items]
Per annum dividend rate, basis spread on variable rate						2.539%

Shareholders' Equity - Schedu_2

Shareholders' Equity - Schedule of Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Dividends Payable [Line Items]
Preferred stock cash dividend	$ 210	$ 188	$ 182
Cash dividends declared (in USD per share)	$ 1.98	$ 1.78	$ 1.60
Common stock dividends	$ 728	$ 665	$ 596
Series C Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 5,250	$ 5,250
Preferred stock cash dividend	$ 26	$ 26
Series C Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 1.32	$ 1.32
Series D Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 5,900	$ 5,900
Preferred stock cash dividend	$ 44	$ 44
Series D Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 1.48	$ 1.48
Series E Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 6,000	$ 6,000
Preferred stock cash dividend	$ 45	$ 45
Series E Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 1.52	$ 1.52
Series F Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 5,250	$ 5,250
Preferred stock cash dividend	$ 40	$ 40
Series F Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 52.50	$ 52.50
Series G Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 5,352	$ 5,352
Preferred stock cash dividend	$ 27	$ 27
Series G Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 1.32	$ 1.32
Series H Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 5,625	$ 1,219,000,000
Preferred stock cash dividend	$ 28	$ 6
Series H Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 56.25	$ 12,180,000

Shareholders' Equity - Preferre

Shareholders' Equity - Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Feb. 20, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 15, 2019	Apr. 30, 2016	May 31, 2015	Feb. 28, 2014	Aug. 31, 2012
Class of Stock [Line Items]
Preferred stock cash dividend		$ 210	$ 188	$ 182
Series E Preferred Stock
Class of Stock [Line Items]
Redemption price					$ 750
Liquidation preference per share (USD per share)					$ 100,000
Premium from difference between redemption value and net carrying value		$ 22
Premium EPS impact (in USD per share)		$ (0.06)
Preferred stock, shares outstanding (in shares)		7,500	7,500
Preferred dividends declared (USD per share)		$ 6,000	$ 6,000
Preferred stock cash dividend		$ 45	$ 45
Series E Preferred Stock, Depository Share
Class of Stock [Line Items]
Liquidation preference per share (USD per share)					$ 25
Preferred dividends declared (USD per share)		$ 1.52	$ 1.52
Series C Preferred Stock
Class of Stock [Line Items]
Liquidation preference per share (USD per share)									$ 100,000
Preferred stock, shares outstanding (in shares)		5,000	5,000
Preferred dividends declared (USD per share)		$ 5,250	$ 5,250
Preferred stock cash dividend		$ 26	$ 26
Series C Preferred Stock, Depository Share
Class of Stock [Line Items]
Liquidation preference per share (USD per share)									$ 25
Preferred dividends declared (USD per share)		$ 1.32	$ 1.32
Series D Preferred Stock
Class of Stock [Line Items]
Liquidation preference per share (USD per share)								$ 100,000
Preferred stock, shares outstanding (in shares)		7,500	7,500
Preferred dividends declared (USD per share)		$ 5,900	$ 5,900
Preferred stock cash dividend		$ 44	$ 44
Series D Preferred Stock, Depository Share
Class of Stock [Line Items]
Liquidation preference per share (USD per share)								$ 25
Preferred dividends declared (USD per share)		$ 1.48	$ 1.48
Series F Preferred Stock
Class of Stock [Line Items]
Liquidation preference per share (USD per share)							$ 100,000
Preferred stock, shares outstanding (in shares)		7,500	7,500
Preferred dividends declared (USD per share)		$ 5,250	$ 5,250
Preferred stock cash dividend		$ 40	$ 40
Series F Preferred Stock, Depository Share
Class of Stock [Line Items]
Liquidation preference per share (USD per share)							$ 1,000
Preferred dividends declared (USD per share)		$ 52.50	$ 52.50
Series G Preferred Stock
Class of Stock [Line Items]
Liquidation preference per share (USD per share)						$ 100,000
Preferred stock, shares outstanding (in shares)		5,000	5,000
Preferred dividends declared (USD per share)		$ 5,352	$ 5,352
Preferred stock cash dividend		$ 27	$ 27
Series G Preferred Stock, Depository Share
Class of Stock [Line Items]
Liquidation preference per share (USD per share)						$ 25
Preferred dividends declared (USD per share)		$ 1.32	$ 1.32
Subsequent Event \| Series C Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 1,313
Preferred stock cash dividend	$ 6
Subsequent Event \| Series C Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 0.33
Subsequent Event \| Series D Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 1,475
Preferred stock cash dividend	$ 11
Subsequent Event \| Series D Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 0.37
Subsequent Event \| Series F Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 2,625
Preferred stock cash dividend	$ 20
Subsequent Event \| Series F Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 26.25
Subsequent Event \| Series G Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 1,338
Preferred stock cash dividend	$ 7
Subsequent Event \| Series G Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 0.33

Shareholders' Equity - Common S

Shareholders' Equity - Common Stock (Details) - USD ($)	3 Months Ended				12 Months Ended
Shareholders' Equity - Common Stock (Details) - USD ($)	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2019	Jun. 30, 2018
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased					$ 1,600,000,000
2019 Program
Equity, Class of Treasury Stock [Line Items]
Amount of common stock authorized for repurchase			$ 2,000,000,000
Common stock repurchased	$ 500,000,000	$ 500,000,000			1,000,000,000
2018 Program
Equity, Class of Treasury Stock [Line Items]
Amount of common stock authorized for repurchase						$ 1,200,000,000
Common stock repurchased			$ 300,000,000	$ 300,000,000	$ 600,000,000

Shareholders' Equity - Schedu_3

Shareholders' Equity - Schedule of Common Stock (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended				12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2019
Equity, Class of Treasury Stock [Line Items]
Shares Acquired (in shares)					24.9
Average Cost per Share (USD per share)					$ 64.30
Total Acquired					$ 1,600
2018 Program
Equity, Class of Treasury Stock [Line Items]
Shares Acquired (in shares)					8.8
Average Cost per Share (USD per share)					$ 67.97
Total Acquired			$ 300	$ 300	$ 600
2019 Program
Equity, Class of Treasury Stock [Line Items]
Shares Acquired (in shares)					16.1
Average Cost per Share (USD per share)					$ 62.28
Total Acquired	$ 500	$ 500			$ 1,000

Shareholders' Equity - Schedu_4

Shareholders' Equity - Schedule of Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Equity [Abstract]
Net unrealized (losses) on cash flow hedges	$ (70)	$ (89)	$ (56)
Net unrealized gains (losses) on available-for-sale securities portfolio	426	(193)	148
Net unrealized gains related to reclassified available-for-sale securities	19	58	19
Net unrealized gains (losses) on available-for-sale securities	445	(135)	167
Net unrealized (losses) on available-for-sale securities designated in fair value hedges	(36)	(40)	(64)
Net unrealized gains on hedges of net investments in non-U.S. subsidiaries	46	16	(65)
Other-than-temporary impairment on held-to-maturity securities related to factors other than credit	(2)	(2)	(6)
Net unrealized (losses) on retirement plans	(187)	(143)	(170)
Foreign currency translation	(1,072)	(963)	(815)
Total	$ (876)	$ (1,356)	$ (1,009)

Shareholders' Equity - Accumula

Shareholders' Equity - Accumulated Other Comprehensive Income by Component (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		$ 24,737	$ 22,270	$ 21,193
Other comprehensive income (loss) before reclassifications		569	(398)
Reclassification of certain tax effects		(84)
Amounts reclassified into (out of) earnings		(5)	51
Other comprehensive income (loss)		564	(347)	1,031
Other comprehensive income (loss)		480
Ending balance		24,431	24,737	22,270
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		(1,356)	(1,009)	(2,040)
Reclassification of certain tax effects	[1]	(84)
Other comprehensive income (loss)		564	(347)	1,031
Ending balance		(876)	(1,356)	(1,009)
Net Unrealized Gains (Losses) on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		(89)	(56)
Other comprehensive income (loss) before reclassifications		13	(52)
Reclassification of certain tax effects		(6)
Amounts reclassified into (out of) earnings		12	19
Other comprehensive income (loss)			(33)
Other comprehensive income (loss)		19
Ending balance		(70)	(89)	(56)
Net Unrealized Gains (Losses) on Available-for-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		(175)	103
Other comprehensive income (loss) before reclassifications		563	(285)
Reclassification of certain tax effects		21
Amounts reclassified into (out of) earnings		0	7
Other comprehensive income (loss)			(278)
Other comprehensive income (loss)		584
Ending balance		409	(175)	103
Net Unrealized Losses on Hedges of Net Investments in Non-U.S. Subsidiaries
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		16	(65)
Other comprehensive income (loss) before reclassifications		33	81
Reclassification of certain tax effects		(3)
Amounts reclassified into (out of) earnings		0	0
Other comprehensive income (loss)			81
Other comprehensive income (loss)		30
Ending balance		46	16	(65)
Other-Than-Temporary Impairment on Held-to-Maturity Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		(2)	(6)
Other comprehensive income (loss) before reclassifications		2	6
Reclassification of certain tax effects		(1)
Amounts reclassified into (out of) earnings		(1)	(2)
Other comprehensive income (loss)			4
Other comprehensive income (loss)		0
Ending balance		(2)	(2)	(6)
Net Unrealized Losses on Retirement Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		(143)	(170)
Other comprehensive income (loss) before reclassifications		0	0
Reclassification of certain tax effects		(28)
Amounts reclassified into (out of) earnings		(16)	27
Other comprehensive income (loss)			27
Other comprehensive income (loss)		(44)
Ending balance		(187)	(143)	(170)
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		(963)	(815)
Other comprehensive income (loss) before reclassifications		(42)	(148)
Reclassification of certain tax effects		(67)
Amounts reclassified into (out of) earnings		0	0
Other comprehensive income (loss)			(148)
Other comprehensive income (loss)		(109)
Ending balance		$ (1,072)	$ (963)	$ (815)

[1]	Represents the reclassification from accumulated other comprehensive income into retained earnings as a result of our adoption of ASU 2018-02 - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income in the first quarter of 2019

Shareholders' Equity - Adjustme

Shareholders' Equity - Adjustments to Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Class of Stock [Line Items]
Gains (losses) from sales of available-for-sale securities, net	$ (1)	$ 9	$ (39)
Net interest income	2,566	2,671	2,304
Compensation and employee benefits expenses	4,541	4,780	4,394
Net income	2,242	2,593	$ 2,156
Reclassification out of Accumulated Other Comprehensive Income
Class of Stock [Line Items]
Net income	(5)	51
Reclassification out of Accumulated Other Comprehensive Income \| Net Unrealized Gains (Losses) on Available-for-Sale Securities
Class of Stock [Line Items]
Gains (losses) from sales of available-for-sale securities, net	0	7
Net realized gains from sales of available-for-sale securities, taxes	0	(2)
Reclassification out of Accumulated Other Comprehensive Income \| Other-Than-Temporary Impairment on Securities
Class of Stock [Line Items]
Losses reclassified (from) to other comprehensive income	(1)	(2)
Other-than-temporary impairment on held-to-maturity securities related to factors other than credit, taxes	0	1
Reclassification out of Accumulated Other Comprehensive Income \| Net Unrealized Gains (Losses) on Cash Flow Hedges
Class of Stock [Line Items]
Net interest income	12	19
Gain (loss) from cash flow hedge reclassified from accumulated other comprehensive income, taxes	5	7
Reclassification out of Accumulated Other Comprehensive Income \| Amortization of Actuarial Losses
Class of Stock [Line Items]
Compensation and employee benefits expenses	(16)	27
Amortization of actuarial losses, taxes	$ (8)	$ 8

Regulatory Capital (Details)

Regulatory Capital (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Retained earnings	$ 21,918	$ 20,553
Capital ratio: required common equity tier 1 capital	8.50%	7.50%
Capital ratio: required tier 1 capital	10.00%	9.00%
Capital ratio: required total capital	12.00%	11.00%
Basel III Advanced Approaches
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common stock and related surplus	$ 10,636	$ 10,565
Retained earnings	21,918	20,606
Accumulated other comprehensive income (loss)	(870)	(1,332)
Treasury stock, at cost	(10,209)	(8,715)
Total	21,475	21,124
Goodwill and other intangible assets, net of associated deferred tax liabilities	(9,112)	(9,350)
Other adjustments	(150)	(194)
Common equity tier 1 capital	12,213	11,580
Preferred stock	2,962	3,690
Tier 1 capital	15,175	15,270
Qualifying subordinated long-term debt	1,095	778
Allowance for loan losses and other	5	14
Total capital	16,275	16,062
Credit risk	54,763	47,738
Operational risk	47,963	46,060
Market risk	1,638	1,517
Total risk-weighted assets	104,364	95,315
Adjusted quarterly average assets	$ 219,624	$ 211,924
Common equity tier 1 capital	11.70%	12.10%
Tier 1 capital	14.50%	16.00%
Total capital	15.60%	16.90%
Basel III Standardized Approach
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common stock and related surplus	$ 10,636	$ 10,565
Retained earnings	21,918	20,606
Accumulated other comprehensive income (loss)	(870)	(1,332)
Treasury stock, at cost	(10,209)	(8,715)
Total	21,475	21,124
Goodwill and other intangible assets, net of associated deferred tax liabilities	(9,112)	(9,350)
Other adjustments	(150)	(194)
Common equity tier 1 capital	12,213	11,580
Preferred stock	2,962	3,690
Tier 1 capital	15,175	15,270
Qualifying subordinated long-term debt	1,095	778
Allowance for loan losses and other	90	83
Total capital	16,360	16,131
Credit risk	102,367	97,303
Market risk	1,638	1,517
Total risk-weighted assets	104,005	98,820
Adjusted quarterly average assets	$ 219,624	$ 211,924
Common equity tier 1 capital	11.70%	11.70%
Tier 1 capital	14.60%	15.50%
Total capital	15.70%	16.30%
State Street Bank \| Basel III Advanced Approaches
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common stock and related surplus	$ 12,893	$ 12,894
Retained earnings	13,218	14,261
Accumulated other comprehensive income (loss)	(654)	(1,112)
Treasury stock, at cost	0	0
Total	25,457	26,043
Goodwill and other intangible assets, net of associated deferred tax liabilities	(8,839)	(9,073)
Other adjustments	(1)	(29)
Common equity tier 1 capital	16,617	16,941
Preferred stock	0	0
Tier 1 capital	16,617	16,941
Qualifying subordinated long-term debt	1,099	776
Allowance for loan losses and other	3	11
Total capital	17,719	17,728
Credit risk	51,610	45,565
Operational risk	44,138	44,494
Market risk	1,638	1,517
Total risk-weighted assets	97,386	91,576
Adjusted quarterly average assets	$ 216,397	$ 209,413
Common equity tier 1 capital	17.10%	18.50%
Tier 1 capital	17.10%	18.50%
Total capital	18.20%	19.40%
State Street Bank \| Basel III Standardized Approach
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common stock and related surplus	$ 12,893	$ 12,894
Retained earnings	13,218	14,261
Accumulated other comprehensive income (loss)	(654)	(1,112)
Treasury stock, at cost	0	0
Total	25,457	26,043
Goodwill and other intangible assets, net of associated deferred tax liabilities	(8,839)	(9,073)
Other adjustments	(1)	(29)
Common equity tier 1 capital	16,617	16,941
Preferred stock	0	0
Tier 1 capital	16,617	16,941
Qualifying subordinated long-term debt	1,099	776
Allowance for loan losses and other	90	83
Total capital	17,806	17,800
Credit risk	98,979	94,776
Market risk	1,638	1,517
Total risk-weighted assets	100,617	96,293
Adjusted quarterly average assets	$ 216,397	$ 209,413
Common equity tier 1 capital	16.50%	17.60%
Tier 1 capital	16.50%	17.60%
Total capital	17.70%	18.50%

Net Interest Income - Component

Net Interest Income - Components of Interest Revenue and Interest Expenses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investment securities:
Interest-bearing deposits with banks	$ 416	$ 387	$ 180
U.S. Treasury and federal agencies	1,443	1,178	854
State and political subdivisions	49	143	226
Other investments	505	560	658
Securities purchased under resale agreements	364	335	264
Loans and leases	769	687	504
Other interest-earning assets	395	372	222
Total interest income	3,941	3,662	2,908
Interest expense:
Interest-bearing deposits	663	363	163
Securities sold under repurchase agreements	31	13	2
Other short-term borrowings	21	17	10
Long-term debt	414	389	308
Other interest-bearing liabilities	246	209	121
Total interest expense	1,375	991	604
Net interest income	$ 2,566	$ 2,671	$ 2,304

Equity-Based Compensation - Nar

Equity-Based Compensation - Narrative (Details) - USD ($)	12 Months Ended			31 Months Ended
Equity-Based Compensation - Narrative (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	May 31, 2017
Deferred Stock Awards And Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation	$ 235,000,000	$ 262,000,000	$ 243,000,000
Accelerated recognition due to restructuring plan	4,000,000	45,000,000	15,000,000
Deferred Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value for vested in period	220,000,000	230,000,000	232,000,000
Costs not yet recognized	$ 212,000,000			$ 212,000,000
Period of recognition for unrecognized share-based compensation	2 years 4 months 24 days
Deferred Stock Awards \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	1 year
Deferred Stock Awards \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value for vested in period	$ 22,000,000	32,000,000	14,000,000
Costs not yet recognized	$ 39,000,000			39,000,000
Period of recognition for unrecognized share-based compensation	1 year 10 months 24 days
Performance Shares \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercised (in shares)	0
Intrinsic value of exercises in period		$ 0	$ 5,000,000
Costs not yet recognized	$ 0			$ 0
2017 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for issuance (in shares)					8,300,000
Additional shares authorized (in shares)				19,700,000
Shares awarded, but not delivered, available for reissue (in shares)	1,000,000			1,000,000
Shares available for grant (in shares)	21,300,000			21,300,000
2006 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for issuance (in shares)					28,500,000

Equity-Based Compensation - Sch

Equity-Based Compensation - Schedule of Shares Awarded (Details) - shares shares in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
2006 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued during period (in shares)	68.9	68.9	68.9
2017 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued during period (in shares)	7.6	3.9	0.4

Equity-Based Compensation - Def

Equity-Based Compensation - Deferred Stock Awards (Details) - Deferred Stock Awards - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Shares
Beginning of Period (in shares)	5,975	6,848
Granted (in shares)	3,168	2,500
Vested (in shares)	(3,089)	(3,235)
Forfeited (in shares)	(220)	(138)
End of Period (in shares)	5,834	5,975
Weighted-Average Grant Date Fair Value
Beginning of Period (in USD per share)	$ 77.07	$ 65.44
Granted (in USD per share)	66.68	101.25
Vested (in USD per share)	71.20	70.98
Forfeited (in USD per share)	75.85	80.60
End of Period (in USD per share)	$ 74.33	$ 77.07

Equity-Based Compensation - Per

Equity-Based Compensation - Performance Awards (Details) - Performance Shares - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Shares
Beginning of Period (in shares)	2,157	1,548
Granted (in shares)	510	1,067
Forfeited (in shares)	(96)	(1)
Paid Out (in shares)	(432)	(457)
End of Period (in shares)	2,139	2,157
Weighted-Average Grant Date Fair Value
Beginning of Period (in USD per share)	$ 69.36	$ 66.09
Granted (in USD per share)	66.04	74.68
Forfeited (in USD per share)	74.82	101.26
Paid Out (in USD per share)	51.01	70.58
End of Period (in USD per share)	$ 71.82	$ 69.36

Employee Benefits (Details)

Employee Benefits (Details) $ in Millions	12 Months Ended
Employee Benefits (Details) $ in Millions	Dec. 31, 2019USD ($)employee	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit expense	$ 8	$ 11	$ 15
Contributions by employer	$ 167	170	$ 146
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Number of eligible employees for pension plan (in employee) \| employee	0
Defined benefit obligation	$ 1,370	1,210
Defined benefit overfunded (underfunded) status	10	(1)
Postretirement Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit obligation	88	12
Defined benefit overfunded (underfunded) status	(88)	(12)
SERP
Defined Benefit Plan Disclosure [Line Items]
Defined benefit obligation	10	110
Defined benefit overfunded (underfunded) status	$ (10)	$ (110)

Occupancy Expense and Informa_3

Occupancy Expense and Information Systems and Communications Expense - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Lease liabilities	$ 1,156
Depreciation and amortization	842	$ 599	$ 526
Finance lease right-of-use asset	78	102
Finance lease liability	136	190
Accumulated amortization of finance lease right-of-use asset	56
Interest on lease liabilities	11	$ 17
Right-of-use assets	858
Lease liabilities	1,020
Operating leases not yet commenced	$ 484
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
Right-of-use assets				$ 910
Lease liabilities				$ 1,060
Minimum
Lessee, Lease, Description [Line Items]
Operating leases not yet commenced, lease terms	10 years
Maximum
Lessee, Lease, Description [Line Items]
Operating leases not yet commenced, lease terms	15 years

Occupancy Expense and Informa_4

Occupancy Expense and Information Systems and Communications Expense - Summary of Lease Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Finance lease:
Amortization of right-of-use assets	$ 21
Interest on lease liabilities	11	$ 17
Total finance lease expense	32
Sublease income	(9)
Net finance lease expense	23
Operating lease:
Operating lease expense	179
Sublease income	(6)
Net operating lease expense	173
Net lease expense	196
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from finance leases	11
Operating cash flows from operating leases	201
Financing cash flows from finance leases	54
Right-of-use assets obtained in exchange for new lease obligations:
Operating leases	120
Finance leases	$ 0

Occupancy Expense and Informa_5

Occupancy Expense and Information Systems and Communications Expense - Summary of Future Minimum Lease Payments (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Operating Leases
2020	$ 183
2021	180
2022	164
2023	143
2024	108
Thereafter	356
Total future minimum lease payments	1,134
Less imputed interest	(114)
Total	1,020
Finance Leases
2020	41
2021	41
2022	41
2023	31
2024	0
Thereafter	0
Total future minimum lease payments	154
Less imputed interest	(18)
Total	136	$ 190
2020	224
2021	221
2022	205
2023	174
2024	108
Thereafter	356
Total future minimum lease payments	1,288
Less imputed interest	(132)
Total	$ 1,156

Occupancy Expense and Informa_6

Occupancy Expense and Information Systems and Communications Expense - Summary of Other Lease Information (Details)	Dec. 31, 2019
Weighted-average remaining lease term (in years):
Finance leases	3 years 9 months 18 days
Operating leases	7 years 7 months 6 days
Weighted-average discount rate:
Finance leases	7.00%
Operating leases	3.00%

Expenses - Schedule of Expenses

Expenses - Schedule of Expenses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Expenses [Abstract]
Professional services	$ 321	$ 357	$ 340
Sales advertising public relations	114	115	67
Securities processing	75	52	10
Regulatory fees and assessments	73	91	108
Bank operations	43	70	80
Donations	51	12	17
Insurance	19	18	20
Other	566	461	287
Total other expenses	$ 1,262	$ 1,176	$ 929

Expenses - Narrative (Details)

Expenses - Narrative (Details) - USD ($) $ in Millions	12 Months Ended			39 Months Ended
Expenses - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2021
Restructuring Cost and Reserve [Line Items]
Repositioning charges	$ 110	$ 300
Charles River Development
Restructuring Cost and Reserve [Line Items]
Acquisitions costs	79	31
Charles River Development \| Forecast
Restructuring Cost and Reserve [Line Items]
Acquisitions costs				$ 200
GEAM Business
Restructuring Cost and Reserve [Line Items]
Acquisitions costs			$ 21
Compensation and Employee Benefits
Restructuring Cost and Reserve [Line Items]
Repositioning charges	98	259
Occupancy Costs
Restructuring Cost and Reserve [Line Items]
Repositioning charges	$ 12	$ 41

Expenses - Restructuring Reserv

Expenses - Restructuring Reserve (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Reserve [Roll Forward]
Beginning balance	$ 341	$ 201	$ 56
Accruals	110	300
Payments and Other Adjustments	(251)	(153)	(100)
Ending balance	198	341	201
Employee Related Costs
Restructuring Reserve [Roll Forward]
Beginning balance	303	166	37
Accruals	98	259
Payments and Other Adjustments	(209)	(115)	(57)
Ending balance	190	303	166
Real Estate Actions
Restructuring Reserve [Roll Forward]
Beginning balance	37	32	17
Accruals	12	41
Payments and Other Adjustments	(42)	(36)	(17)
Ending balance	7	37	32
Asset and Other Write-offs
Restructuring Reserve [Roll Forward]
Beginning balance	1	3	2
Accruals	0	0
Payments and Other Adjustments	0	(2)	(26)
Ending balance	1	1	3
State Street Beacon
Restructuring Reserve [Roll Forward]
Accruals	(2)	(7)	245
State Street Beacon \| Employee Related Costs
Restructuring Reserve [Roll Forward]
Accruals	(2)	(7)	186
State Street Beacon \| Real Estate Actions
Restructuring Reserve [Roll Forward]
Accruals	0	0	32
State Street Beacon \| Asset and Other Write-offs
Restructuring Reserve [Roll Forward]
Accruals	$ 0	$ 0	$ 27

Income Taxes - Schedule of Comp

Income Taxes - Schedule of Components of Income Tax Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
Federal	$ 157	$ 122	$ 343
State	86	148	24
Non-U.S.	357	374	380
Total current expense	600	644	747
Deferred:
Federal	(6)	(128)	45
State	33	(22)	66
Non-U.S.	(157)	14	(19)
Total deferred expense (benefit)	(130)	(136)	92
Total income tax expense (benefit)	$ 470	$ 508	$ 839

Income Taxes - Schedule of Reco

Income Taxes - Schedule of Reconciliation of the U.S. Statutory Income Tax Rate to the Effective Tax Rate (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
U.S. federal income tax rate	21.00%	21.00%	35.00%
State taxes, net of federal benefit	3.40%	3.10%	2.00%
Tax-exempt income	(1.50%)	(2.00%)	(4.30%)
Business tax credits	(5.40%)	(4.10%)	(3.70%)
Foreign tax differential	(0.10%)	(0.60%)	(7.20%)
Foreign legal entity restructuring	(4.30%)	0.00%	0.00%
Foreign tax credit limitations	2.20%	0.20%	0.00%
Transition tax	0	0	0.152
Deferred tax revaluation	0.00%	(1.00%)	(6.80%)
Foreign designated earnings	0.00%	0.00%	(0.70%)
Litigation expense	1.60%	0.30%	0.00%
Other, net	0.40%	(0.60%)	(1.60%)
Effective tax rate	17.30%	16.30%	27.90%

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Tax expense (benefit) attributable to enactment of TCJA		$ (32)	$ 257
GILTI, percent	0.30%	0.20%
Undistributed indefinitely reinvested earnings of certain foreign subsidiaries	$ 4,100
Unrecognized tax benefits	149	$ 108	94	$ 71
Unrecognized tax benefits that would impact effective tax rate	140	100	87
Maximum estimated income tax expense change in unrecognized tax benefit in the next 12 months	4
Interest expense for tax examination	5	1
Interest accrued for tax examination	$ 10	$ 8	$ 8

Income Taxes - Schedule of Co_2

Income Taxes - Schedule of Components of Deferred Tax Liabilities and Assets (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Other amortizable assets	$ 394	$ 49
Tax credit carryforwards	387	274
Lease obligations	254
Deferred compensation	120	134
Restructuring charges and other reserves	104	156
NOL and other carryforwards	73	104
Pension plan	66	55
Foreign currency translation	57	50
Unrealized losses on investment securities, net	0	146
Total deferred tax assets	1,455	968
Valuation allowance for deferred tax assets	(330)	(138)
Deferred tax assets, net of valuation allowance	1,125	830
Deferred tax liabilities:
Fixed and intangible assets	763	744
Investment basis differences	258	229
Right-of-use Assets	223
Unrealized gains on investment securities, net	86	0
Other	32	11
Total deferred tax liabilities	$ 1,362	$ 984

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Asset Valuation Allowances (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Valuation Allowance [Line Items]
Other amortizable assets	$ 394	$ 49
Valuation Allowance	(330)	$ (138)
Other amortizable assets
Valuation Allowance [Line Items]
Other amortizable assets	394
Valuation Allowance	(243)
Tax credits
Valuation Allowance [Line Items]
Tax credits	387
Valuation Allowance	(29)
NOLs - Non-U.S.
Valuation Allowance [Line Items]
NOLs - Non-U.S.	33
Valuation Allowance	(18)
Other carryforwards
Valuation Allowance [Line Items]
Other carryforwards	27
Valuation Allowance	(27)
NOLs - State
Valuation Allowance [Line Items]
NOLs - State	13
Valuation Allowance	$ (13)

Income Taxes - Summary of Activ

Income Taxes - Summary of Activity Related to Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 108	$ 94	$ 71
Decrease related to agreements with tax authorities	(17)	(40)	(14)
Increase related to tax positions taken during current year	13	12	26
Increase related to tax positions taken during prior years	49	44	11
Decreases related to a lapse of the applicable statute of limitations	(4)	(2)	0
Ending balance	$ 149	$ 108	$ 94

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share [Abstract]
Net income	$ 2,242	$ 2,593	$ 2,156
Preferred stock dividends	(232)	(188)	(182)
Dividends and undistributed earnings allocated to participating securities	(1)	(1)	(2)
Net income available to common shareholders	$ 2,009	$ 2,404	$ 1,972
Basic average common shares	369,911	371,983	374,793
Effect of dilutive securities: common stock options and common stock awards (in shares)	3,755	4,493	5,420
Diluted average common shares	373,666	376,476	380,213
Anti-dilutive securities (in shares)	2,052	1,011	188
Earnings per common share:
Basic (in USD per share)	$ 5.43	$ 6.46	$ 5.26
Diluted (in USD per share)	$ 5.38	$ 6.39	$ 5.19

Line of Business Information -

Line of Business Information - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2019line_of_business	Dec. 31, 2019	Dec. 31, 2019segment	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Segment Reporting Information [Line Items]
Number of lines of business		2		2
Net costs	$ 2,712				$ 3,101	$ 2,995
Acquisition and restructuring costs	77				24	266
Repositioning charges	110				300
Minimum \| Investment Servicing and Management Services \| Investment Servicing and Investment Management
Segment Reporting Information [Line Items]
Percentage of consolidated revenues by segment			70.00%
Minimum \| Processing and Other Services \| Investment Servicing and Investment Management
Segment Reporting Information [Line Items]
Percentage of consolidated revenues by segment			20.00%
Maximum \| Investment Servicing and Management Services \| Investment Servicing and Investment Management
Segment Reporting Information [Line Items]
Percentage of consolidated revenues by segment			80.00%
Maximum \| Processing and Other Services \| Investment Servicing and Investment Management
Segment Reporting Information [Line Items]
Percentage of consolidated revenues by segment			30.00%
Other
Segment Reporting Information [Line Items]
Net costs	(359)				(398)	$ (266)
Acquisition and restructuring costs	77				24
Repositioning charges	110				300
Legal and related expenses	$ 172				50
Business exit costs					$ 24

Line of Business Information _2

Line of Business Information - Summary of Line of Business (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Servicing fees	$ 5,074	$ 5,421	$ 5,365
Management fees	1,771	1,851	1,616
Foreign exchange trading services	1,111	1,201	1,071
Securities finance	471	543	606
Software and processing fees	720	438	343
Total fee revenue	9,147	9,454	9,001
Net interest income	2,566	2,671	2,304
Total other income	43	6	(39)
Total revenue	11,756	12,131	11,266
Provision for loan losses	10	15	2
Total expenses	9,034	9,015	8,269
Income before income taxes	$ 2,712	$ 3,101	$ 2,995
Pre-tax margin	23.00%	26.00%	27.00%
Average assets (in billions)	$ 223,300	$ 223,400	$ 219,400
Operating Segments \| Investment Servicing
Segment Reporting Information [Line Items]
Servicing fees	5,074	5,429	5,365
Management fees	0	0	0
Foreign exchange trading services	974	1,071	999
Securities finance	462	543	606
Software and processing fees	691	443	336
Total fee revenue	7,201	7,486	7,306
Net interest income	2,590	2,691	2,309
Total other income	43	6	(39)
Total revenue	9,834	10,183	9,576
Provision for loan losses	10	15	2
Total expenses	7,140	7,081	6,717
Income before income taxes	$ 2,684	$ 3,087	$ 2,857
Pre-tax margin	27.00%	30.00%	30.00%
Average assets (in billions)	$ 220,300	$ 220,200	$ 214,000
Operating Segments \| Investment Management
Segment Reporting Information [Line Items]
Servicing fees	0	0	0
Management fees	1,771	1,851	1,616
Foreign exchange trading services	137	130	72
Securities finance	9	0	0
Software and processing fees	29	(5)	7
Total fee revenue	1,946	1,976	1,695
Net interest income	(24)	(20)	(5)
Total other income	0	0	0
Total revenue	1,922	1,956	1,690
Provision for loan losses	0	0	0
Total expenses	1,535	1,544	1,286
Income before income taxes	$ 387	$ 412	$ 404
Pre-tax margin	20.00%	21.00%	24.00%
Average assets (in billions)	$ 3,000	$ 3,200	$ 5,400
Other
Segment Reporting Information [Line Items]
Servicing fees	0	(8)	0
Management fees	0	0	0
Foreign exchange trading services	0	0	0
Securities finance	0	0	0
Software and processing fees	0	0	0
Total fee revenue	0	(8)	0
Net interest income	0	0	0
Total other income	0	0	0
Total revenue	0	(8)	0
Provision for loan losses	0	0	0
Total expenses	359	390	266
Income before income taxes	$ (359)	$ (398)	$ (266)

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)line_of_business	Dec. 31, 2019USD ($)segment	Dec. 31, 2018USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of lines of business	2	2
Accrued Interest and Fees Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables related to contracts with customers	$ 2,770	$ 2,770	$ 2,750

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Disaggregation of Revenues (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Servicing fees	$ 5,074	$ 5,421	$ 5,365
Management fees	1,771	1,851	1,616
Foreign exchange trading services	1,111	1,201	1,071
Securities finance	471	543	606
Software and processing fees	720	438	343
Total fee revenue	9,147	9,454	9,001
Net interest income	2,566	2,671	2,304
Total other income	43	6	(39)
Total revenue	11,756	12,131	11,266
Operating Segments \| Investment Servicing
Disaggregation of Revenue [Line Items]
Topic 606 revenue	6,135	6,307
All other revenue	3,699	3,876
Servicing fees	5,074	5,429	5,365
Management fees	0	0	0
Foreign exchange trading services	974	1,071	999
Securities finance	462	543	606
Software and processing fees	691	443	336
Total fee revenue	7,201	7,486	7,306
Net interest income	2,590	2,691	2,309
Total other income	43	6	(39)
Total revenue	9,834	10,183	9,576
Operating Segments \| Investment Servicing \| Servicing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	5,074	5,429
All other revenue	0	0
Servicing fees	5,074	5,429
Operating Segments \| Investment Servicing \| Management fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Management fees	0	0
Operating Segments \| Investment Servicing \| Foreign exchange trading services
Disaggregation of Revenue [Line Items]
Topic 606 revenue	346	361
All other revenue	628	710
Foreign exchange trading services	974	1,071
Operating Segments \| Investment Servicing \| Securities finance
Disaggregation of Revenue [Line Items]
Topic 606 revenue	259	308
All other revenue	203	235
Securities finance	462	543
Operating Segments \| Investment Servicing \| Processing fees and other
Disaggregation of Revenue [Line Items]
Topic 606 revenue	456	209
All other revenue	235	234
Software and processing fees	691	443
Operating Segments \| Investment Servicing \| Total fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	6,135	6,307
All other revenue	1,066	1,179
Total fee revenue	7,201	7,486
Operating Segments \| Investment Servicing \| Net interest income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	2,590	2,691
Net interest income	2,590	2,691
Operating Segments \| Investment Servicing \| Total other income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	43	6
Total other income	43	6
Operating Segments \| Investment Management
Disaggregation of Revenue [Line Items]
Topic 606 revenue	1,908	1,981
All other revenue	14	(25)
Servicing fees	0	0	0
Management fees	1,771	1,851	1,616
Foreign exchange trading services	137	130	72
Securities finance	9	0	0
Software and processing fees	29	(5)	7
Total fee revenue	1,946	1,976	1,695
Net interest income	(24)	(20)	(5)
Total other income	0	0	0
Total revenue	1,922	1,956	1,690
Operating Segments \| Investment Management \| Servicing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Servicing fees	0	0
Operating Segments \| Investment Management \| Management fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	1,771	1,851
All other revenue	0	0
Management fees	1,771	1,851
Operating Segments \| Investment Management \| Foreign exchange trading services
Disaggregation of Revenue [Line Items]
Topic 606 revenue	137	130
All other revenue	0	0
Foreign exchange trading services	137	130
Operating Segments \| Investment Management \| Securities finance
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	9	0
Securities finance	9	0
Operating Segments \| Investment Management \| Processing fees and other
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	29	(5)
Software and processing fees	29	(5)
Operating Segments \| Investment Management \| Total fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	1,908	1,981
All other revenue	38	(5)
Total fee revenue	1,946	1,976
Operating Segments \| Investment Management \| Net interest income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	(24)	(20)
Net interest income	(24)	(20)
Operating Segments \| Investment Management \| Total other income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Total other income	0	0
Other
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	(8)
All other revenue	0	0
Servicing fees	0	(8)	0
Management fees	0	0	0
Foreign exchange trading services	0	0	0
Securities finance	0	0	0
Software and processing fees	0	0	0
Total fee revenue	0	(8)	0
Net interest income	0	0	0
Total other income	0	0	0
Total revenue	0	(8)	$ 0
Other \| Servicing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	(8)
All other revenue	0	0
Servicing fees	0	(8)
Other \| Management fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Management fees	0	0
Other \| Foreign exchange trading services
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Foreign exchange trading services	0	0
Other \| Securities finance
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Securities finance	0	0
Other \| Processing fees and other
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Software and processing fees	0	0
Other \| Total fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	(8)
All other revenue	0	0
Total fee revenue	0	(8)
Other \| Net interest income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Net interest income	0	0
Other \| Total other income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Total other income	$ 0	$ 0

Non-U.S. Activities - Schedule

Non-U.S. Activities - Schedule Of Results From Non-U.S. Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total revenue	$ 11,756	$ 12,131	$ 11,266
Income before income taxes	2,712	3,101	2,995
Non-U.S.
Segment Reporting Information [Line Items]
Total revenue	4,974	5,190	4,734
Income before income taxes	1,159	1,294	1,230
U.S.
Segment Reporting Information [Line Items]
Total revenue	6,782	6,941	6,532
Income before income taxes	$ 1,553	$ 1,807	$ 1,765

Non-U.S. Activities - Narrative

Non-U.S. Activities - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Total assets	$ 245,610	$ 244,596
Non-U.S.
Segment Reporting Information [Line Items]
Total assets	$ 83,280	$ 81,690

Parent Company Financial Stat_3

Parent Company Financial Statements - Statement of Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Total revenue	$ 11,756	$ 12,131	$ 11,266
Other	1,262	1,176	929
Total expenses	9,034	9,015	8,269
Income tax expense	470	508	839
Equity in undistributed income of consolidated subsidiaries and unconsolidated entities:
Net income	2,242	2,593	2,156
Parent Company
Condensed Financial Statements, Captions [Line Items]
Cash dividends from consolidated banking subsidiary	3,300	785	2,224
Cash dividends from consolidated non-banking subsidiaries and unconsolidated entities	285	41	12
Other, net	149	58	127
Total revenue	3,734	884	2,363
Interest expense	415	381	297
Other	108	162	94
Total expenses	523	543	391
Income tax expense	(91)	(127)	(86)
Income before equity in undistributed income of consolidated subsidiaries and unconsolidated entities	3,302	468	2,058
Equity in undistributed income of consolidated subsidiaries and unconsolidated entities:
Consolidated banking subsidiary	(1,070)	1,944	(1)
Consolidated non-banking subsidiaries and unconsolidated entities	10	181	99
Net income	$ 2,242	$ 2,593	$ 2,156

Parent Company Financial Stat_4

Parent Company Financial Statements - Statement of Condition (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets:
Interest-bearing deposits with banks	$ 68,965	$ 73,040
Trading account assets	914	860
Investment securities available-for-sale	53,815	45,148
Other assets	34,011	34,789
Total assets	245,610	244,596
Liabilities:
Total liabilities	221,179	219,859
Shareholders’ equity	24,431	24,737	$ 22,270	$ 21,193
Total liabilities and shareholders' equity	245,610	244,596
Parent Company
Assets:
Interest-bearing deposits with banks	428	486
Trading account assets	393	357
Investment securities available-for-sale	250	224
Consolidated banking subsidiary	25,451	25,966
Consolidated non-banking subsidiaries	7,240	6,726
Unconsolidated entities	117	106
Consolidated banking subsidiary	0	64
Consolidated non-banking subsidiaries and unconsolidated entities	3,361	2,337
Other assets	270	96
Total assets	37,510	36,362
Liabilities:
Accrued expenses and other liabilities	696	685
Long-term debt	12,383	10,940
Total liabilities	13,079	11,625
Shareholders’ equity	24,431	24,737
Total liabilities and shareholders' equity	$ 37,510	$ 36,362

Parent Company Financial Stat_5

Parent Company Financial Statements - Statement of Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Activities:
Net cash provided by operating activities	$ 5,690	$ 10,175	$ 6,940
Investing Activities:
Net decrease (increase) in interest-bearing deposits with consolidated banking subsidiary	4,075	(5,813)	3,708
Purchases of available-for-sale securities	(38,164)	(31,814)	(34,841)
Net cash (used in) provided by investing activities	(2,626)	(4,496)	48
Financing Activities:
Proceeds from issuance of long-term debt, net of issuance costs	1,495	995	747
Payments for long-term debt	(402)	(1,461)	(493)
Proceeds from issuance of preferred stock, net of issuance costs	0	495	0
Proceeds from issuance of common stock, net of issuance costs	0	1,150	0
Payments for redemption of preferred stock	(750)	0	0
Repurchases of common stock	(1,585)	(350)	(1,292)
Repurchases of common stock for employee tax withholding	(81)	(124)	(126)
Payments for cash dividends	(930)	(828)	(768)
Net cash (used in) financing activities	(2,974)	(4,471)	(6,188)
Net increase	90	1,208	800
Cash and due from banks at beginning of period	3,212	2,004	1,204
Cash and due from banks at end of period	3,302	3,212	2,004
Parent Company
Operating Activities:
Net cash provided by operating activities	2,684	2,250	2,047
Investing Activities:
Net decrease (increase) in interest-bearing deposits with consolidated banking subsidiary	58	46	3,103
Proceeds from sales and maturities of available-for-sale securities	900	0	0
Purchases of available-for-sale securities	(921)	(224)	0
Investments in consolidated banking and non-banking subsidiaries	(6,165)	(4,883)	(7,672)
Sale or repayment of investment in consolidated banking and non-banking subsidiaries	5,345	2,472	4,216
Net increase in investments in unconsolidated affiliates	0	0	172
Net cash (used in) provided by investing activities	(783)	(2,589)	(181)
Financing Activities:
Proceeds from issuance of long-term debt, net of issuance costs	1,495	996	748
Payments for long-term debt	(50)	(1,000)	(450)
Proceeds from issuance of preferred stock, net of issuance costs	0	495	0
Proceeds from issuance of common stock, net of issuance costs	0	1,150	0
Payments for redemption of preferred stock	(750)	0	0
Repurchases of common stock	(1,585)	(350)	(1,292)
Repurchases of common stock for employee tax withholding	(81)	(124)	(104)
Payments for cash dividends	(930)	(828)	(768)
Net cash (used in) financing activities	(1,901)	339	(1,866)
Net increase	0	0	0
Cash and due from banks at beginning of period	0	0	0
Cash and due from banks at end of period	$ 0	$ 0	$ 0

Subsequent Events (Details)

Subsequent Events (Details) - USD ($)	Mar. 15, 2020	Jan. 24, 2020	Dec. 31, 2019	Dec. 31, 2018	Aug. 31, 2012
Senior notes \| 2.400% Senior Notes due 2030 \| Subsequent Event
Subsequent Event [Line Items]
Aggregate principal amount		$ 750,000,000
Interest rate on debt		2.40%
Series C Preferred Stock
Subsequent Event [Line Items]
Preferred stock, shares outstanding (in shares)			5,000	5,000
Liquidation preference per share (USD per share)					$ 100,000
Series C Preferred Stock, Depository Share
Subsequent Event [Line Items]
Liquidation preference per share (USD per share)					$ 25
Forecast \| Series C Preferred Stock
Subsequent Event [Line Items]
Preferred stock, shares outstanding (in shares)	5,000
Liquidation preference per share (USD per share)	$ 100,000
Forecast \| Series C Preferred Stock, Depository Share
Subsequent Event [Line Items]
Liquidation preference per share (USD per share)	$ 25