SVB Financial (SIVBQ) 10-Q5 Nov 202020 Q3 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2020	Oct. 31, 2020
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2020
Document Transition Report	false
Entity File Number	000-15637
Entity Registrant Name	SVB FINANCIAL GROUP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	91-1962278
Entity Address, Address Line One	3003 Tasman Drive
Entity Address, City or Town	Santa Clara
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95054-1191
City Area Code	408
Local Phone Number	654-7400
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		51,796,902
Entity Central Index Key	0000719739
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Amendment Flag	false
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	SIVB
Security Exchange Name	NASDAQ
Preferred Stock, Series A
Entity Information [Line Items]
Title of 12(b) Security	Depositary shares, each representing a 1/40th ownership interest in a share of 5.250% Fixed-Rate Non-Cumulative Perpetual Preferred Stock, Series A
Trading Symbol	SIVBP
Security Exchange Name	NASDAQ

Interim Consolidated Balance Sh

Interim Consolidated Balance Sheets - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019
Assets:
Cash and cash equivalents		$ 15,687,776	$ 6,781,783
Available-for-sale securities, at fair value (cost of $25,237,540 and $13,894,348, respectively)		25,904,324	14,014,919
Held-to-maturity securities, at amortized cost and net of allowance for credit losses of $291 and $0 (fair value of $13,612,463 and $14,115,272, respectively) (1)	[1]	12,982,223	13,842,946
Non-marketable and other equity securities		1,547,363	1,213,829
Total investment securities		40,433,910	29,071,694
Loans, amortized cost		38,413,891	33,164,636
Allowance for credit losses: loans		(512,958)	(304,924)
Net loans		37,900,933	32,859,712
Premises and equipment, net of accumulated depreciation and amortization		173,477	161,876
Goodwill		137,823	137,823
Other intangible assets, net		45,380	49,417
Lease right-of-use assets		220,493	197,365
Accrued interest receivable and other assets		2,316,979	1,745,233
Total assets		96,916,771	71,004,903
Liabilities:
Noninterest-bearing demand deposits		57,508,229	40,841,570
Interest-bearing deposits		27,264,791	20,916,237
Total deposits		84,773,020	61,757,807
Short-term borrowings		19,068	17,430
Lease liabilities		246,652	218,847
Other liabilities		3,067,221	2,041,752
Long-term debt		843,430	347,987
Total liabilities		88,949,391	64,383,823
Commitments and contingencies (Note 15 and Note 18)
SVBFG stockholders’ equity:
Preferred stock, $0.001 par value, 20,000,000 shares authorized; 350,000 shares issued and outstanding		340,138	340,138
Common stock, $0.001 par value, 150,000,000 shares authorized; 51,787,972 shares and 51,655,607 shares issued and outstanding, respectively		52	52
Additional paid-in capital		1,548,918	1,470,071
Retained earnings		5,283,433	4,575,601
Accumulated other comprehensive income		620,394	84,445
Total SVBFG stockholders’ equity		7,792,935	6,470,307
Noncontrolling interests		174,445	150,773
Total equity		7,967,380	6,621,080
Total liabilities and total equity		$ 96,916,771	$ 71,004,903

[1]	Prior to our adoption of Accounting Standard Update (ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments) on January 1, 2020, the allowance for credit losses (ACL) related to held-to-maturity (HTM) securities was not applicable and is therefore presented as $0 at December 31, 2019. See "Adoption of New Accounting Standards" in Note 1 — “Basis of Presentation” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional details.

Interim Consolidated Balance _2

Interim Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Preferred stock, par value, in usd per share	$ 0.001	$ 0.001
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	350,000	350,000
Preferred stock, shares outstanding	350,000	350,000
Common stock, par value, in usd per share	$ 0.001	$ 0.001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares, issued	51,787,972	51,655,607
Common stock, shares outstanding	51,787,972	51,655,607
Available-for-sale securities, cost	$ 25,237,540	$ 13,894,348
Held-to-maturity securities	13,612,463	14,115,272
Allowance for Credit Losses	$ 291	$ 0

Interim Consolidated Statements

Interim Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Interest income:
Loans	$ 368,981	$ 394,246	$ 1,116,660	$ 1,202,467
Investment securities:
Taxable	156,517	149,656	452,449	410,768
Non-taxable	14,912	11,123	42,200	32,991
Federal funds sold, securities purchased under agreements to resell and other short-term investment securities	2,717	28,867	22,743	74,447
Total interest income	543,127	583,892	1,634,052	1,720,673
Interest expense:
Deposits	8,218	55,106	51,310	130,163
Borrowings	7,169	8,142	17,938	27,577
Total interest expense	15,387	63,248	69,248	157,740
Net interest income	527,740	520,644	1,564,804	1,562,933
(Reduction) provision for credit losses	(52,018)	36,536	257,943	89,033
Net interest income after provision for credit losses	579,758	484,108	1,306,861	1,473,900
Noninterest income:
Gains on investment securities, net	189,837	29,849	270,760	106,575
Gains on equity warrant assets, net	53,766	37,561	93,667	107,213
Client investment fees	31,914	46,679	107,192	136,905
Foreign exchange fees	43,881	40,309	127,642	116,863
Credit card fees	22,756	30,158	72,348	86,431
Deposit service charges	22,015	22,482	67,115	65,496
Lending related fees	13,562	11,707	37,851	36,857
Letters of credit and standby letters of credit fees	12,192	10,842	35,155	31,205
Investment banking revenue	92,181	38,516	280,551	137,005
Commissions	16,257	12,275	49,197	40,812
Other	49,222	13,631	76,887	42,773
Total noninterest income	547,583	294,009	1,218,365	908,135
Noninterest expense:
Compensation and benefits	327,369	233,840	902,752	715,073
Professional services	67,215	55,202	169,748	133,018
Premises and equipment	30,772	26,775	85,420	72,386
Net occupancy	18,965	16,981	56,156	49,716
Business development and travel	2,214	19,539	19,277	51,915
FDIC and state assessments	6,933	4,881	18,986	13,343
Other	37,553	34,106	117,903	105,059
Total noninterest expense	491,021	391,324	1,370,242	1,140,510
Income before income tax expense	636,320	386,793	1,154,984	1,241,525
Income tax expense	162,265	105,075	299,491	331,624
Net income before noncontrolling interests	474,055	281,718	855,493	909,901
Net income attributable to noncontrolling interests	(27,748)	(14,437)	(40,035)	(35,901)
Preferred stock dividends	(4,594)	0	(12,557)	0
Net income available to common stockholders	$ 441,713	$ 267,281	$ 802,901	$ 874,000
Earnings per common share—basic (dollars per share)	$ 8.53	$ 5.19	$ 15.55	$ 16.80
Earnings per common share—diluted (dollars per share)	$ 8.47	$ 5.15	$ 15.46	$ 16.67

Interim Consolidated Statemen_2

Interim Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income before noncontrolling interests	$ 474,055	$ 281,718	$ 855,493	$ 909,901
Change in foreign currency cumulative translation gains and losses:
Foreign currency translation gains (losses)	10,279	(6,213)	1,323	(6,307)
Related tax (expense) benefit	(2,804)	1,731	(452)	1,757
Change in unrealized gains and losses on available-for-sale securities:
Unrealized holding gains	13,860	70,185	604,479	236,203
Related tax expense	(3,842)	(19,547)	(167,542)	(65,786)
Reclassification adjustment for losses (gains) included in net income	0	0	(61,165)	3,905
Related tax (benefit) expense	0	0	16,953	(1,087)
Amortization of unrealized holding gains on securities transferred from available-for-sale to held-to-maturity	(368)	(374)	(1,058)	(1,767)
Related tax benefit	102	104	293	492
Change in unrealized gains and losses on cash flow hedges:
Unrealized gains	0	9,810	231,920	28,466
Related tax expense	0	(2,733)	(64,281)	(7,930)
Reclassification adjustment for (gains) losses included in net income	(16,004)	2,713	(33,924)	3,224
Related tax expense (benefit)	4,436	(755)	9,403	(897)
Other comprehensive income, net of tax	5,659	54,921	535,949	190,273
Comprehensive income	479,714	336,639	1,391,442	1,100,174
Comprehensive income attributable to noncontrolling interests	(27,748)	(14,437)	(40,035)	(35,901)
Comprehensive income attributable to SVBFG	$ 451,966	$ 322,202	$ 1,351,407	$ 1,064,273

Interim Consolidated Statemen_3

Interim Consolidated Statements of Stockholders' Equity - USD ($)		Total	Cumulative adjustment for the adoption of amendment	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Retained EarningsCumulative adjustment for the adoption of amendment	Accumulated Other Comprehensive Income (Loss)	Total SVBFG Stockholders’ Equity	Total SVBFG Stockholders’ EquityCumulative adjustment for the adoption of amendment	Noncontrolling Interests
Balance (in shares) at Dec. 31, 2018					52,586,498
Balance, beginning of period, net of tax at Dec. 31, 2018		$ 5,264,843,000		$ 0	$ 53,000	$ 1,378,438,000	$ 3,791,838,000		$ (54,120,000)	$ 5,116,209,000		$ 148,634,000
Balance, beginning of period, net of tax (Accounting Standards Update 2017-08) at Dec. 31, 2018	[1]		$ (583,000)					$ (583,000)			$ (583,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Acquisition of SVB Leerink		5,256,000										5,256,000
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)					487,101
Common stock issued under employee benefit plans, net of restricted stock cancellations		9,236,000			$ 0	9,236,000				9,236,000
Common stock issued under ESOP (in shares)					14,442
Common stock issued under ESOP		3,506,000				3,506,000				3,506,000
Net income		909,901,000					874,000,000			874,000,000		35,901,000
Capital calls and distributions, net		(32,002,000)										(32,002,000)
Net change in unrealized gains and losses on AFS securities, net of tax		173,235,000							173,235,000	173,235,000
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax		(1,275,000)							(1,275,000)	(1,275,000)
Foreign currency translation adjustments, net of tax		(4,550,000)							(4,550,000)	(4,550,000)
Net change in unrealized gains and losses on cash flow hedges, net of tax		22,863,000							22,863,000	22,863,000
Share-based compensation, net		50,550,000				50,550,000				50,550,000
Common stock repurchases (in shares)					(1,532,210)
Common stock repurchases		(352,511,000)			$ (1,000)		(352,510,000)			(352,511,000)
Balance (in shares) at Sep. 30, 2019					51,555,831
Balance, end of period, net of tax at Sep. 30, 2019		6,048,469,000		0	$ 52,000	1,441,730,000	4,312,745,000		136,153,000	5,890,680,000		157,789,000
Balance (in shares) at Jun. 30, 2019					51,561,719
Balance, beginning of period, net of tax at Jun. 30, 2019		5,706,175,000		0	$ 52,000	1,421,565,000	4,051,194,000		81,232,000	5,554,043,000		152,132,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)					19,674
Common stock issued under employee benefit plans, net of restricted stock cancellations		1,383,000				1,383,000				1,383,000
Net income		281,718,000					267,281,000			267,281,000		14,437,000
Capital calls and distributions, net		(8,780,000)										(8,780,000)
Net change in unrealized gains and losses on AFS securities, net of tax		50,638,000							50,638,000	50,638,000
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax		(270,000)							(270,000)	(270,000)
Foreign currency translation adjustments, net of tax		(4,482,000)							(4,482,000)	(4,482,000)
Net change in unrealized gains and losses on cash flow hedges, net of tax		9,035,000							9,035,000	9,035,000
Share-based compensation, net		18,782,000				18,782,000				18,782,000
Common stock repurchases (in shares)					(25,562)
Common stock repurchases		(5,730,000)					(5,730,000)			(5,730,000)
Balance (in shares) at Sep. 30, 2019					51,555,831
Balance, end of period, net of tax at Sep. 30, 2019		6,048,469,000		0	$ 52,000	1,441,730,000	4,312,745,000		136,153,000	5,890,680,000		157,789,000
Balance (in shares) at Dec. 31, 2019					51,655,607
Balance, beginning of period, net of tax at Dec. 31, 2019		6,621,080,000		340,138,000	$ 52,000	1,470,071,000	4,575,601,000		84,445,000	6,470,307,000		150,773,000
Balance, beginning of period, net of tax (Accounting Standards Update 2016-13) at Dec. 31, 2019	[1]		$ (35,049,000)					$ (35,049,000)			$ (35,049,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)					364,494
Common stock issued under employee benefit plans, net of restricted stock cancellations		15,691,000			$ 0	15,691,000				15,691,000
Common stock issued under ESOP (in shares)					12,094
Common stock issued under ESOP		2,447,000				2,447,000				2,447,000
Net income		855,493,000					815,458,000			815,458,000		40,035,000
Capital calls and distributions, net		(16,363,000)										(16,363,000)
Net change in unrealized gains and losses on AFS securities, net of tax		392,725,000							392,725,000	392,725,000
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax		(765,000)							(765,000)	(765,000)
Foreign currency translation adjustments, net of tax		871,000							871,000	871,000
Net change in unrealized gains and losses on cash flow hedges, net of tax		143,118,000							143,118,000	143,118,000
Share-based compensation, net		60,733,000				60,733,000				60,733,000
Common stock repurchases (in shares)					(244,223)
Common stock repurchases		(60,020,000)			$ 0		(60,020,000)			(60,020,000)
Dividends on preferred stock		(12,557,000)					(12,557,000)			(12,557,000)
Other		(24,000)				(24,000)				(24,000)
Balance (in shares) at Sep. 30, 2020					51,787,972
Balance, end of period, net of tax at Sep. 30, 2020		7,967,380,000		340,138,000	$ 52,000	1,548,918,000	5,283,433,000		620,394,000	7,792,935,000		174,445,000
Balance (in shares) at Jun. 30, 2020					51,740,714
Balance, beginning of period, net of tax at Jun. 30, 2020		7,468,313,000		340,138,000	$ 52,000	1,522,728,000	4,841,720,000		614,735,000	7,319,373,000		148,940,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)					47,258
Common stock issued under employee benefit plans, net of restricted stock cancellations		4,797,000				4,797,000				4,797,000
Net income		474,055,000					446,307,000			446,307,000		27,748,000
Capital calls and distributions, net		(2,243,000)										(2,243,000)
Net change in unrealized gains and losses on AFS securities, net of tax		10,018,000							10,018,000	10,018,000
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax		(266,000)							(266,000)	(266,000)
Foreign currency translation adjustments, net of tax		7,475,000							7,475,000	7,475,000
Net change in unrealized gains and losses on cash flow hedges, net of tax		(11,568,000)							(11,568,000)	(11,568,000)
Share-based compensation, net		21,408,000				21,408,000				21,408,000
Dividends on preferred stock		(4,594,000)					(4,594,000)			(4,594,000)
Other		(15,000)				(15,000)				(15,000)
Balance (in shares) at Sep. 30, 2020					51,787,972
Balance, end of period, net of tax at Sep. 30, 2020		$ 7,967,380,000		$ 340,138,000	$ 52,000	$ 1,548,918,000	$ 5,283,433,000		$ 620,394,000	$ 7,792,935,000		$ 174,445,000

[1]	See "Adoption of New Accounting Standards" in Note 1 — “Basis of Presentation” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional details.

Interim Consolidated Statemen_4

Interim Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
Interim Consolidated Statements of Cash Flows - USD ($)	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net income before noncontrolling interests	$ 855,493,000	$ 909,901,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	257,943,000	89,033,000
Gains on investment securities, net	(270,760,000)	(106,575,000)
Distributions of earnings from non-marketable and other equity securities	64,703,000	77,584,000
Depreciation and amortization	73,607,000	60,408,000
Amortization of premiums and discounts on investment securities, net	54,918,000	9,646,000
Amortization of share-based compensation	60,733,000	50,550,000
Amortization of deferred loan fees	(123,305,000)	(112,383,000)
Deferred income tax benefit	(4,124,000)	(1,720,000)
Excess tax benefit from exercise of stock options and vesting of restricted shares	(3,449,000)	(7,931,000)
Losses from the write-off of premises and equipment	0	185,000
Changes in other assets and liabilities:
Accrued interest receivable and payable, net	15,565,000	(10,429,000)
Accounts receivable and payable, net	17,534,000	(18,278,000)
Income tax receivable and payable, net	(15,267,000)	(59,527,000)
Accrued compensation	(634,000)	(109,837,000)
Foreign exchange spot contracts, net	147,021,000	34,304,000
Proceeds from termination of interest rate swaps	227,500,000	0
Other, net	(212,177,000)	(78,516,000)
Net cash provided by operating activities	1,053,291,000	709,744,000
Cash flows from investing activities:
Purchases of available-for-sale securities	(16,614,960,000)	(7,832,282,000)
Proceeds from sales of available-for-sale securities	2,654,212,000	2,189,087,000
Proceeds from maturities and paydowns of available-for-sale securities	2,634,123,000	801,605,000
Purchases of held-to-maturity securities	(1,756,920,000)	(408,479,000)
Proceeds from maturities and paydowns of held-to-maturity securities	2,833,290,000	1,516,340,000
Purchases of non-marketable and other equity securities	(163,817,000)	(100,068,000)
Proceeds from sales and distributions of capital of non-marketable and other securities	84,850,000	90,371,000
Net increase in loans	(5,193,146,000)	(2,685,151,000)
Purchases of premises and equipment	(66,003,000)	(33,871,000)
Acquisition of SVB Leerink, net of cash acquired	0	(102,328,000)
Net cash used for investing activities	(15,588,371,000)	(6,564,776,000)
Cash flows from financing activities:
Net increase in deposits	23,015,213,000	10,213,974,000
Net increase (decrease) in short-term borrowings	1,638,000	(612,514,000)
Proceeds from issuance of 3.125% Senior Notes	495,024,000	0
(Distributions to noncontrolling interests), net of contributions from noncontrolling interests	(16,363,000)	(32,002,000)
Payment of preferred stock dividend	(12,557,000)	0
Common stock repurchases	(60,020,000)	(352,511,000)
Proceeds from issuance of common stock, ESPP and ESOP, net of restricted stock awards	18,138,000	12,742,000
Net cash provided by financing activities	23,441,073,000	9,229,689,000
Net increase in cash and cash equivalents	8,905,993,000	3,374,657,000
Cash and cash equivalents at beginning of period	6,781,783,000	3,571,539,000
Cash and cash equivalents at end of period	15,687,776,000	6,946,196,000
Cash paid during the period for:
Interest	67,012,000	164,503,000
Income taxes	287,098,000	379,579,000
Noncash items during the period:
Changes in unrealized gains and losses on available-for-sale securities, net of tax	392,725,000	173,235,000
Distributions of stock from investments	11,574,000	7,770,000
Equity warrant assets
Changes in fair values of derivatives, net	(4,270,000)	12,801,000
Derivative
Changes in fair values of derivatives, net	$ (87,740,000)	$ (29,472,000)

Basis of Presentation

Basis of Presentation	9 Months Ended
Basis of Presentation	Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation SVB Financial Group is a diversified financial services company, as well as a bank holding company and a financial holding company. SVB Financial was incorporated in the state of Delaware in March 1999. Through our various subsidiaries and divisions, we offer a diverse set of banking and financial products and services to support our clients of all sizes and stages throughout their life cycles. In these notes to our unaudited interim consolidated financial statements, when we refer to “SVB Financial Group,” “SVBFG," the “Company,” “we,” “our,” “us” or use similar words, we mean SVB Financial Group and all of its subsidiaries collectively, including Silicon Valley Bank (the “Bank”), unless the context requires otherwise. When we refer to “SVB Financial” or the “Parent” we are referring only to the parent company, SVB Financial Group (not including subsidiaries). The accompanying unaudited interim consolidated financial statements reflect all adjustments of a normal and recurring nature that are, in the opinion of management, necessary to fairly present our financial position, results of operations and cash flows in accordance with GAAP. Such unaudited interim consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the SEC. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. The results of operations for the three and nine months ended September 30, 2020 are not necessarily indicative of results to be expected for any future periods. These unaudited interim consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2019 (“2019 Form 10-K”). Use of Estimates and Assumptions The preparation of unaudited interim consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Estimates may change as new information is obtained. Significant items that are subject to such estimates include measurements of fair value, the valuation of non-marketable and other equity securities, the valuation of equity warrant assets and the adequacy of the allowance for credit losses for loans and for unfunded credit commitments. Principles of Consolidation and Presentation Our unaudited interim consolidated financial statements include the accounts of SVB Financial Group and consolidated entities. We consolidate voting entities in which we have control through voting interests or entities through which we have a controlling financial interest in a variable interest entity (“VIE”). We determine whether we have a controlling financial interest in a VIE by determining if we have: (a) the power to direct the activities of the VIE that most significantly impact the entity’s economic performance, (b) the obligation to absorb the expected losses or (c) the right to receive the expected returns of the entity. Generally, we have significant variable interests if our commitments to a limited partnership investment represent a significant amount of the total commitments to the entity. We also evaluate the impact of related parties on our determination of variable interests in our consolidation conclusions. We consolidate VIEs in which we are the primary beneficiary based on a controlling financial interest. If we are not the primary beneficiary of a VIE, we record our pro-rata interests based on our ownership percentage. VIEs are entities where investors lack sufficient equity at risk for the entity to finance its activities without additional subordinated financial support or equity investors, as a group, lack one of the following characteristics: (a) the power to direct the activities that most significantly impact the entity’s economic performance, (b) the obligation to absorb the expected losses of the entity, or (c) the right to receive the expected returns of the entity. We assess VIEs to determine if we are the primary beneficiary of a VIE. A primary beneficiary is defined as a variable interest holder that has a controlling financial interest. A controlling financial interest requires both: (a) the power to direct the activities that most significantly impact the VIE’s economic performance and (b) obligation to absorb losses or receive benefits of a VIE that could potentially be significant to a VIE. Under this analysis, we also evaluate kick-out rights and other participating rights, which could provide us a controlling financial interest. The primary beneficiary of a VIE is required to consolidate the VIE. We also evaluate fees paid to managers of our limited partnership investments. We exclude those fee arrangements that are not deemed to be variable interests from the analysis of our interests in our investments in VIEs and the determination of a primary beneficiary, if any. Fee arrangements based on terms that are customary and commensurate with the services provided are deemed not to be variable interests and are, therefore, excluded. All significant intercompany accounts and transactions with consolidated entities have been eliminated. We have not provided financial or other support during the periods presented to any VIE that we were not previously contractually required to provide. Reclassifications Certain prior period amounts primarily related to the adoption of the Accounting Standard Update (ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments) ("ASU 2016-13" or "CECL") as mentioned below have been reclassified to conform to current period presentations. Summary of Significant Accounting Policies With the exception of the updated accounting policies listed below, the accompanying unaudited interim consolidated financial statements have been prepared on a consistent basis with the accounting policies described in Consolidated Financial Statements and Supplementary Data — Note 2 — “Summary of Significant Accounting Policies” under Part II, Item 8 of our 2019 Form 10-K. Loans Loans are reported at amortized cost which consists of the principal amount outstanding, net of unearned loan fees. Unearned loan fees reflect unamortized deferred loan origination and commitment fees net of unamortized deferred loan origination costs. In addition to cash loan fees, we often obtain equity warrant assets that give us an option to purchase a position in a client company's stock in consideration for providing credit facilities. The grant date fair values of these equity warrant assets are deemed to be loan fees and are deferred as unearned income and recognized as an adjustment of loan yield through loan interest income. The net amount of unearned loan fees is amortized into loan interest income over the contractual terms of the underlying loans and commitments using the constant effective yield method, adjusted for actual loan prepayment experience, or the straight-line method, as applicable. Allowance for Credit Losses: Loans The allowance for credit losses for loans considers credit risk and is adjusted by a provision for expected credit losses ("ECL") charged to expense and reduced by the charge-off of loan amounts, net of recoveries. Our allowance for credit losses is an estimate of expected losses inherent with the Company's existing loans at the balance sheet date. Determining the appropriateness of the allowance is complex and requires judgment by management about the effect of matters that are inherently uncertain. Portfolio Segments and Risk-Based Segments The process to estimate the ECL on loans involves procedures to appropriately consider the unique characteristics of our six loan portfolio segments. Our six portfolio segments are determined by using the following risk dimensions: (i) underwriting methodology, (ii) industry niche and (iii) life stage. The six portfolio segments are further disaggregated into 11 classes of financing receivable, or risk-based segments, and represents the level at which credit risk is monitored. Credit quality is assessed and monitored by evaluating various attributes and the results of those evaluations are utilized in underwriting new loans and in our process to estimate ECL. Additionally, all of our loan and allowance for credit loss disclosures are presented at the risk-based segment level of disaggregation. For further information refer to Note 7 — “Loans and Allowance for Credit Losses: Loans and Unfunded Credit Commitments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report. The following provides additional information regarding our six portfolio segments and the additional disaggregation of our 11 risk-based segments: Global Fund Banking The vast majority of our Global Fund Banking (formerly Private Equity/Venture Capital) portfolio segment consists of capital call lines of credit, the repayment of which is dependent on the payment of capital calls by the underlying limited partner investors in the funds managed by certain private equity and venture capital firms. These facilities are generally governed by meaningful financial covenants oriented towards ensuring that the funds' remaining callable capital is sufficient to repay the loan, and larger commitments (typically provided to larger private equity funds) are often secured by an assignment of the general partner's right to call capital from the fund's limited partner investors. Investor Dependent - Accelerator (Early-Stage) and Growth (Mid-Stage and Later-Stage) Investor Dependent loans are comprised of two portfolio segments: (i) Accelerator, which is comprised of Early-Stage clients, and (ii) Growth, which is comprised of Mid-Stage and Later-Stage clients. Our Investor Dependent loans are made primarily to technology and life science/healthcare companies. Investor Dependent loans typically have modest or negative cash flows and no established record of profitable operations. Repayment of these loans may be dependent upon receipt by borrowers of additional equity financing from venture capital firms or others, or in some cases, a successful sale to a third party or an IPO. Venture capital firms may provide financing selectively, at reduced amounts, or on less favorable terms, which may have an adverse effect on our borrowers' ability to repay their loans to us. When repayment is dependent upon the next round of venture investment and there is an indication that further investment is unlikely or will not occur, it is often likely that the company would need to be sold to repay the debt in full. If reasonable efforts have not yielded a likely buyer willing to repay all debt at the close of the sale or on commercially viable terms, the account will most likely be deemed to be non-performing or charged-off. Our Accelerator, or Early-Stage, portfolio segment consists of pre-revenue, development-stage companies and companies that are in the early phases of commercialization, with revenues of up to $5 million. Our Growth portfolio segment is disaggregated into two risk-based segments for disclosure purposes; Mid-Stage and Later-Stage. Mid-Stage companies consist of growth-stage enterprises with revenues of between $5 million and $15 million or, in the case of biotechnology, pre-revenue clinical-stage companies. Later-Stage consists of companies with revenues of $15 million or more. This disaggregation of our Investor Dependent loans is based in part on the materially different historical loss rate we have experienced with each risk-based segment, with historical loss rates being the highest in the Early-Stage portfolio segment, and declining in the Mid-Stage and Later-Stage risk-based segments, as a function of the relatively higher enterprise value and asset coverage that is created as a company progresses through the various stages of development. Cash Flow and Balance Sheet Dependent Our Cash Flow and Balance Sheet Dependent portfolio segment is disaggregated into Cash Flow Dependent and Balance Sheet Dependent loans. Additionally, our Cash Flow Dependent loans are disaggregated into two risk-based segments for disclosure purposes: (i) Sponsor Led Buyout and (ii) Other. Our Cash Flow Dependent loans are made primarily to technology and life science/healthcare companies and require the borrower to maintain cash flow from operations that is sufficient to service all debt. Borrowers must demonstrate normalized cash flow in excess of all fixed charges associated with operating the business. Sponsor Led Buyout loans are typically used to assist a select group of experienced private equity sponsors with the acquisition of businesses, are larger in size, and repayment is generally dependent upon the cash flows of the acquired company. The acquired companies are typically established, later-stage businesses of scale and characterized by reasonable levels of leverage with loan structures that include meaningful financial covenants. The sponsor's equity contribution is often 50 percent or more of the acquisition price. Balance Sheet Dependent loans are made primarily to technology and life science/healthcare companies, which include asset-based loans, and are structured to require constant current asset coverage (i.e., cash, cash equivalents, accounts receivable and, to a much lesser extent, inventory) in an amount that exceeds the outstanding debt. These loans are generally made to companies in our Growth and Corporate Finance practices. The repayment of these arrangements is dependent on the financial condition, and payment ability, of third parties with whom our clients do business. As a result of the adoption of CECL and in connection with the revised approach to portfolio disaggregation discussed above, certain loans that were previously considered to be Balance Sheet Dependent have been reclassified as Investor Dependent - Later-Stage. Private Bank Our Private Bank clients are primarily private equity/venture capital professionals and executives in the innovation companies they support. We offer a customized suite of private banking services, including mortgages, home equity lines of credit, restricted and private stock loans, capital call lines of credit, lines of credit against liquid assets and other secured and unsecured lending products, as well as cash and wealth management services. In addition, we provide owner occupied commercial mortgages to Private Bank clients and real estate secured loans to eligible employees through our EHOP. Other Our Other portfolio segment consists of two risk-based segments for disclosure purposes: (i) Premium Wine and (ii) Other. Our Premium Wine clients primarily consist of premium wine producers, vineyards and wine industry or hospitality related businesses across the Western United States, primarily in California's Napa Valley, Sonoma County and Central Coast regions, as well as the Pacific Northwest. Our Other risk-based segment primarily includes our community development loans made as part of our responsibilities under the Community Reinvestment Act. SBA Loans The U.S. Small Business Administration’s ("SBA") loans are included across all of our six portfolio segments and are separately disclosed as a single risk-based segment. We participated in the SBA's Paycheck Protection Program ("PPP") to support small businesses across the United States. Under this program, the SBA provides a guarantee to banks making unsecured term loans of up to $10 million for qualified small businesses, as defined by the SBA. We are no longer taking applications for this program and have begun accepting forgiveness applications from clients, whereby clients apply for loans to be forgiven (paid off) by the SBA. Loans funded under this program were primarily made to clients in the technology, life science/healthcare, premium wine and energy resource industries. While the recipients were located across the United States, more than half were made to clients that applied from the western United States. We maintain a systematic process for the evaluation of individual loans and portfolio segments for inherent risk of estimated credit losses for loans. At the time of approval, each loan in our portfolio is assigned a credit risk rating. Credit risk ratings are assigned on a scale of 1 to 10, with 1 representing loans with a low risk of nonpayment, 9 representing loans with the highest risk of nonpayment and 10 representing loans which have been charged-off. The credit risk ratings for each loan are monitored and updated on an ongoing basis. This credit risk rating process includes, but is not limited to, consideration of such factors as payment status, the financial condition and operating performance of the borrower, borrower compliance with loan covenants, underlying collateral values and performance trends, the degree of access to additional capital, the presence of credit enhancements such as third party guarantees (where applicable), the degree to which the borrower is sensitive to external factors and the depth and experience of the borrower's management team. Our policies require a committee of senior management to review, at least quarterly, credit relationships with a credit risk rating of 5 through 9 that exceed specific dollar values. Expected Credit Loss Measurement The methodology for estimating the amount of ECL reported in the allowance for credit losses is the sum of two main components: (1) ECL assessed on a collective basis for pools of loans that share similar risk characteristics which includes a qualitative adjustment based on management’s assessment of the risks that may lead to a future loan loss experience different from our historical loan loss experience and (2) ECL assessed for individual loans that do not share similar risk characteristics with other loans. We do not estimate ECL on accrued interest receivable ("AIR") on loans as AIR is reversed or written off when the full collection of the AIR related to a loan becomes doubtful. AIR on loans totaled $109.3 million at September 30, 2020 and $119.1 million at December 31, 2019 and is reported in "Accrued interest receivable and other assets" in our unaudited interim consolidated balance sheets. While the evaluation process of our allowance for credit losses on loans uses historical and other objective information, the classification of loans and the estimate of the allowance for credit losses for loans rely on the judgment and experience of our management. A committee comprised of senior management evaluates the adequacy of the allowance for credit losses for loans, which includes review of loan portfolio segmentation, quantitative models, internal and external data inputs, economic forecasts, credit risk ratings and qualitative adjustments. Loans That Share Similar Risk Characteristics with Other Loans We derive an estimated ECL assumption from a non-discounted cash flow approa ch based on our portfolio segments discussed above. This approach incorporates a calculation of three predictive metrics: (1) probability of default ("PD"), (2) loss giv en default ("LGD") and (3) exposure at default ("EAD"), over the estimated life of the exposure. PD and LGD assumptions are developed based on quantitative models and inherent risk of credit loss, both of which involve significant judgment. Renewals and extensions within our control are not considered in the estimated contractual term of a loan. However, we include potential extensions if management has a reasonable expectation that we will execute a TDR with the borrower. The quantitative models are based on historical credit loss experience, adjusted for probability-weighted economic scenarios. These scenarios are used to support a reasonable and supportable forecast period of three years for all portfolio segments. To the extent the remaining contractual lives of loans in the portfolio extend beyond this three-year period, we revert to historical averages using an autoregressive model of mean reversion that will continue to gradually trend towards the mean historical loss over the remaining contractual lives, adjusted for prepayments. The macroeconomic scenarios are reviewed on a quarterly basis. We also apply a qualitative factor adjustment to the results obtained through our quantitative ECL models to consider model imprecision, emerging risk assessments, trends and other subjective factors that may not be adequately represented in the quantitative ECL models. These adjustments reflect our assessment of the extent that current conditions and reasonable and supportable forecasts differ from conditions that existed during the period over which historical information was evaluated. These adjustments are aggregated to become our qualitative allocation. Based on our qualitative assessment estimate of changing risks in the lending environment, the qualitative allocation may vary significantly from period to period and may include, but is not limited to, consideration of the following factors: • Changes in lending policies and procedures, including changes in underwriting standards and collection, charge-off, and recovery practices not considered elsewhere in estimating credit losses; • Changes in international, national, regional, and local economic and business conditions and developments that affect the collectability of the portfolio, including the condition of various market segments; • Changes in the nature and volume of the portfolio and in the terms of loans; • Changes in the experience, ability and depth of lending management and other relevant staff; • Changes in the volume and severity of past due loans, the volume of nonaccrual loans and the volume and severity of adversely classified or graded loans; • Changes in the quality of our loan review system; • Changes in the value of underlying collateral for collateral-dependent loans; • The existence and effect of any concentrations of credit, and changes in the level of such concentrations; • The effect of other external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in our existing portfolio; and • The effect of limitations of available data, model imprecision and recent macro-economic factors that may not be reflected in the forecast information. Loans That Do Not Share Similar Risk Characteristics We monitor our loan pools to ensure all assets therein continue to share similar risk characteristics with other financial assets inside the pool. Changes in credit risk, borrower circumstances or the recognition of write-offs may indicate that a loan's risk profile has changed, and the asset should be removed from its current pool. For a loan that does not share risk characteristics with other loans, expected credit loss is measured based on the net realizable value, that is, the difference between the discounted value of the expected future cash flows and the amortized cost basis of the loan. When a loan is collateral-dependent and the repayment is expected to be provided substantially through the operation or sale of the collateral, the ECL is measured as the difference between the amortized cost basis of the loan and the fair value of the collateral. The fair value of the collateral will be determined by the most recent appraisal, as adjusted to reflect a reasonable marketing period for the sale of the asset(s) and an estimate of reasonable selling expenses. Collateral-dependent loans will have independent appraisals completed and accepted at least annually. Allowance for Credit Losses: Unfunded Credit Commitments We maintain a separate allowance for credit losses for unfunded credit commitments which is included in other liabilities and the related ECL in our provision for credit losses. We estimate the amount of expected losses by using historical trends to calculate a probability of an unfunded credit commitment being funded and derive historical lifetime expected loss factors for each portfolio segment similar to our funded loan ECL. The collectively assessed ECL for unfunded credit commitments also includes the same qualitative allocations applied for our funded loan ECL. For unfunded credit commitments related to loans that do not share similar risk characteristics with other loans, where applicable, a separate estimate of ECL will be included in our total allowance for credit losses on unfunded credit commitments. Loan commitments that are determined to be unconditionally cancellable by the Company do not require an allowance for credit losses on unfunded commitments. Investment Securities Available-for-Sale Securities and the Allowance for Credit Losses on Available-for-Sale Securities Our available-for-sale securities portfolio is a fixed income investment portfolio that is managed to earn an appropriate portfolio yield over the long-term while maintaining sufficient liquidity and credit diversification and meeting our asset/liability management objectives. Unrealized gains and losses on available-for-sale securities, net of applicable taxes, are reported in accumulated other comprehensive income, which is a separate component of SVBFG's stockholders' equity, until realized. We analyze available-for-sale securities for impairment related to credit losses each quarter. Market valuations represent the current fair value of a security at a specified point in time and incorporates the risk of timing of interest due and the return of principal over the contractual life of each security. Gains and losses on securities are realized when there is a sale of the security prior to maturity. A credit impairment is recognized through a valuation allowance against the security with an offset through earnings; the allowance is limited to the amount that fair value, calculated as the present value of expected future cash flow discounted at the security’s effective interest rate, is less than the amortized cost basis. We separate the amount of the impairment related to credit losses, if any, and the amount due to all other factors. The credit loss component is recognized in earnings and recorded as an allowance for credit losses for AFS securities. Held-to-Maturity Securities and the Allowance for Credit Losses on Held-to-Maturity Securities Debt securities purchased with the positive intent and ability to hold to maturity are classified as held-to-maturity securities and are recorded at amortized cost, net of any allowance for credit losses. We measure ECL on held-to-maturity securities on a collective basis by major security type and standard credit rating. Our held-to-maturity securities portfolio, with the exception of our municipal bond portfolio, are either explicitly or implicitly guaranteed by the U.S. government, are highly rated by major rating agencies and have a long history of no credit losses. With respect to these securities, we consider the risk of credit loss to be zero and, therefore, we do not record an ECL. Our municipal bond portfolio primarily consists of highly rated bonds and currently carry ratings no lower than Aa3. The estimate of ECL on our municipal bond portfolio considers historical credit loss information and severity of loss in the event of default and leverages external data adjusted for current conditions. A reasonable and supportable forecast period of one year is applied to our municipal bond portfolio, with immediate reversion to long-term average historical loss rates when remaining contractual lives of securities exceed one year. We do not estimate ECL on AIR from held-to-maturity securities as AIR is reversed or written off when the full collection of the AIR related to a security becomes doubtful. AIR from held-to-maturity securities totaled $39.4 million at September 30, 2020 and $45.2 million at December 31, 2019 and is reported in "Accrued interest receivable and other assets" in our unaudited interim consolidated balance sheets. Expected credit loss on municipal bonds that do not share common risk characteristics with our collective portfolio are individually measured based on net realizable value, or the difference between the discounted value of the expected future cash flows and the recorded amortized cost basis of the security. Adoption of New Accounting Standards Financial Instruments - Credit Losses In June 2016, the FASB issued a new Accounting Standard Update (ASU 2016-13, Financial Instruments- Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments), which amends the incurred loss impairment methodology in current GAAP with a methodology that reflects a current expected credit loss measurement to estimate the allowance for credit losses over the contractual life of the financial assets (including loans, unfunded credit commitments and HTM securities) and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. While the CECL model does not apply to available-for-sale debt securities, ASU 2016-13 does require entities to record an allowance for credit losses when recognizing credit losses for available-for-sale securities, rather than reduce the amortized cost of the securities by direct write-offs, which allows for reversal of credit impairments in future periods based on improvements in credit. We adopted the guidance on January 1, 2020, using a modified retrospective approach. We recognized the cumulative effect of initially applying CECL as an adjustment to the opening balance of retained earnings, net of tax. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. We completed a comprehensive implementation process that included loss forecasting model development, evaluation of technical accounting topics, updates to our allowance for credit loss accounting policies, reporting processes and related internal controls, overall operational readiness for our adoption of CECL as well as parallel runs for CECL alongside our previous allowance process. We provided quarterly updates to senior management and to the Audit and Credit Committees of the Board of Directors throughout the implementation process. For additional details regarding our allowance for credit losses methodology, see Note 7 — “Loans and Allowance for Credit Losses: Loans and Unfunded Credit Commitments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report. Based on our loan, unfunded credit commitment, and HTM security portfolios composition at December 31, 2019, and the then current economic environment, the cumulative effect of the changes to our consolidated balance sheets at January 1, 2020, for the adoption of CECL were as follows: Balance at December 31, 2019 Adjustments Due to Adoption of ASC 326 Balance at Assets: Allowance for credit losses: loans $ 304,924 $ 25,464 $ 330,388 Allowance for credit losses: held-to-maturity securities — 174 174 Deferred tax assets 28,433 13,415 41,848 Other liabilities: Allowance for credit losses: unfunded credit commitments 67,656 22,826 90,482 Stockholders' equity: Retained earnings, net of tax 4,575,601 (35,049) 4,540,552 In light of the economic disruptions and operational challenges related to the Coronavirus Disease 2019 pandemic (“COVID-19”), in March 2020 the federal banking agencies provided transitional relief to banking organizations with respect to the impact of CECL on regulatory capital (the “2020 CECL Transition Rule”). Under the 2020 CECL Transition Rule, banking organizations that adopt CECL during the 2020 calendar year, such as SVB Financial and the Bank, may delay the estimated impact of CECL on regulatory capital for two years, followed by a three-year period to phase out the aggregate capital benefit provided during the initial two-year delay. The rule prescribes a methodology for estimating the impact of differences in credit loss allowances reflected under CECL versus under the incurred loss methodology during the five-year transition period. We have elected to use the five-year transition option under the 2020 CECL Transition Rule. Refer to the "Capital Resources" section under Part I, Item 2 of this report for additional details. Additionally, under the prior guidanc

Stockholders' Equity and EPS

Stockholders' Equity and EPS	9 Months Ended
Stockholders' Equity and EPS	Sep. 30, 2020
Equity and Earnings Per Share [Abstract]
Stockholders' Equity and EPS	Stockholders' Equity and EPS Accumulated Other Comprehensive Income The following table summarizes the items reclassified out of accumulated other comprehensive income into the Consolidated Statements of Income (unaudited) for the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) Income Statement Location 2020 2019 2020 2019 Reclassification adjustment for (gains) losses on available-for-sale securities included in net income Gains on investment securities, net $ — $ — $ (61,165) $ 3,905 Related tax expense (benefit) Income tax expense — — 16,953 (1,087) Reclassification adjustment for (gains) losses on cash flow hedges included in net income Net interest income (16,004) 2,713 (33,924) 3,224 Related tax expense (benefit) Income tax expense 4,436 (755) 9,403 (897) Total reclassification adjustment for (gains) losses included in net income, net of tax $ (11,568) $ 1,958 $ (68,733) $ 5,145 The table below summarizes the activity relating to net gains and losses on our cash flow hedges included in accumulated other comprehensive income for the three and nine months ended September 30, 2020 and 2019. Refer to Note 11 — “Derivative Financial Instruments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional information regarding the termination of our cash flow hedges during the quarter ended March 31, 2020. Over the next 12 months, we expect that approximately $63.5 million in accumulated other comprehensive income ("AOCI") at September 30, 2020, related to unrealized gains will be reclassified out of AOCI and recognized in net income. Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Balance, beginning of period, net of tax $ 152,556 $ 13,828 $ (2,130) $ — Net increase in fair value, net of tax — 7,077 167,639 20,536 Net realized (gain) loss reclassified to net income, net of tax (11,568) 1,958 (24,521) 2,327 Balance, end of period, net of tax $ 140,988 $ 22,863 $ 140,988 $ 22,863 EPS Basic EPS is the amount of earnings available to each share of common stock outstanding during the reporting period. Diluted EPS is the amount of earnings available to each share of common stock outstanding during the reporting period adjusted to include the effect of potentially dilutive common shares. Potentially dilutive common shares include incremental shares issuable for stock options and restricted stock unit awards outstanding under our 2006 Equity Incentive Plan and our ESPP. Potentially dilutive common shares are excluded from the computation of dilutive EPS in periods in which the effect would be antidilutive. The following is a reconciliation of basic EPS to diluted EPS for the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Dollars and shares in thousands, except per share amounts) 2020 2019 2020 2019 Numerator: Net income available to common stockholders $ 441,713 $ 267,281 $ 802,901 $ 874,000 Denominator: Weighted average common shares outstanding—basic 51,773 51,545 51,640 52,025 Weighted average effect of dilutive securities: Stock options and ESPP 141 203 147 238 Restricted stock units and awards 232 110 163 168 Weighted average common shares outstanding—diluted 52,146 51,858 51,950 52,431 Earnings per common share: Basic $ 8.53 $ 5.19 $ 15.55 $ 16.80 Diluted 8.47 5.15 15.46 16.67 The following table summarizes the weighted-average common shares excluded from the diluted EPS calculation due to the antidilutive effect for the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Shares in thousands) 2020 2019 2020 2019 Stock options 319 213 269 154 Restricted stock units 55 432 83 294 Total 374 645 352 448 Stock Repurchase Program On October 24, 2019, our Board of Directors authorized a stock repurchase program that enables us to repurchase up to $350 million of our outstanding common stock. For the three months ended September 30, 2020, we did not repurchase any shares of our outstanding common stock under the stock repurchase program as the program remained on pause during the quarter end period. For the nine months ended September 30, 2020, we had repurchased 244,223 shares of our outstanding common stock for $60.0 million under the stock repurchase program. The program expired on October 29, 2020. Preferred Stock On December 9, 2019, the Company issued depositary shares representing an ownership interest in 350,000 shares of Series A Preferred Stock with $0.001 par value and liquidation preference of $1,000 per share, or $25 per depositary share. All preferred shares were issued in the form of depositary shares, with each depositary share representing a 1/40th ownership interest in a share of the preferred stock. The Series A Preferred Stock has no stated maturity and is not subject to any sinking fund or other obligation of the Company. Dividends are approved by the Board of Directors and, if declared, are payable quarterly, in arrears, at a rate per annum equal to 5.25 percent. The Series A Preferred Stock is redeemable at the Company’s option, in whole or in part, on or after February 15, 2025. Prior to February 15, 2025, the Series A Preferred Stock is redeemable at the Company’s option, in whole and not in part, following any change in laws or regulations that would not allow the Company to treat the full liquidation value of the Series A Preferred Stock as Tier 1 capital for purposes of the capital adequacy guidelines of the Board of Governors of the Federal Reserve System ("the Federal Reserve"). The redemption amount is computed at the per share liquidation preference plus any declared but unpaid dividends. Redemptions are subject to certain regulatory provisions, including approval of the Federal Reserve. As of September 30, 2020, there were 350,000 shares issued and outstanding of Series A Preferred Shares, which had a carrying value of $340.1 million and liquidation preference of $350.0 million. The following table summarizes our preferred stock at September 30, 2020: Series Description Amount outstanding (in millions) Carrying value Shares issued and outstanding Par Value Ownership interest per depository share Liquidation preference per depository share 2020 dividends paid per depository share Series A 5.250% Fixed-Rate Non-Cumulative Perpetual Preferred Stock $ 350 $ 340.1 350,000 $ 0.001 1/40th $ 25 $ 0.90

Share-Based Compensation

Share-Based Compensation	9 Months Ended
Share-Based Compensation	Sep. 30, 2020
Share-based Payment Arrangement [Abstract]
Share-Based Compensation	Share-Based Compensation For the three and nine months ended September 30, 2020 and 2019, we recorded share-based compensation and related tax benefits as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Share-based compensation expense $ 21,408 $ 18,782 $ 60,733 $ 50,550 Income tax benefit related to share-based compensation expense (5,560) (4,883) (14,726) (12,028) Unrecognized Compensation Expense As of September 30, 2020, unrecognized share-based compensation expense was as follows: (Dollars in thousands) Unrecognized Weighted Average Expected Stock options $ 15,541 2.60 Restricted stock units and awards 125,321 2.68 Total unrecognized share-based compensation expense $ 140,862 Share-Based Payment Award Activity The table below provides stock option information related to the 2006 Equity Incentive Plan for the nine months ended September 30, 2020: Options Weighted Weighted Average Remaining Contractual Life - in Years Aggregate Outstanding at December 31, 2019 625,407 $ 169.33 Granted 123,301 186.83 Exercised (130,330) 99.72 Forfeited (15,460) 231.75 Expired (1,030) 71.11 Outstanding at September 30, 2020 601,888 186.55 4.08 $ 38,405,994 Vested and expected to vest at September 30, 2020 578,024 185.26 4.00 $ 37,654,264 Exercisable at September 30, 2020 317,896 152.61 2.59 $ 30,524,026 The aggregate intrinsic value of outstanding options shown in the table above represents the pre-tax intrinsic value based on our closing stock price of $240.62 as of September 30, 2020. The total intrinsic value of options exercised during the three and nine months ended September 30, 2020 was $5.6 million and $17.2 million, compared to $1.6 million and $16.0 million for the comparable 2019 periods, respectively. The table below provides information for restricted stock units and awards under the 2006 Equity Incentive Plan for the nine months ended September 30, 2020: Shares Weighted Average Grant Date Fair Value Nonvested at December 31, 2019 847,972 $ 236.54 Granted 426,071 190.79 Vested (247,370) 207.82 Forfeited (49,272) 226.32 Nonvested at September 30, 2020 977,401 224.38

Variable Interest Entities

Variable Interest Entities	9 Months Ended
Variable Interest Entities	Sep. 30, 2020
Investments In Variable Interest Entities [Abstract]
Variable Interest Entities	Variable Interest Entities Our involvement with VIEs includes our investments in venture capital and private equity funds, debt funds, private and public portfolio companies and qualified affordable housing projects. The following table presents the carrying amounts and classification of significant variable interests in consolidated and unconsolidated VIEs as of September 30, 2020 and December 31, 2019: (Dollars in thousands) Consolidated VIEs Unconsolidated VIEs Maximum Exposure to Loss in Unconsolidated VIEs September 30, 2020: Assets: Cash and cash equivalents $ 14,082 $ — $ — Non-marketable and other equity securities (1) 318,356 771,329 771,329 Accrued interest receivable and other assets 853 — — Total assets $ 333,291 $ 771,329 $ 771,329 Liabilities: Other liabilities (1) 1,500 332,031 — Total liabilities $ 1,500 $ 332,031 $ — December 31, 2019: Assets: Cash and cash equivalents $ 7,629 $ — $ — Non-marketable and other equity securities (1) 270,057 689,360 689,360 Accrued interest receivable and other assets 1,117 — — Total assets $ 278,803 $ 689,360 $ 689,360 Liabilities: Other liabilities (1) 2,854 302,031 — Total liabilities $ 2,854 $ 302,031 $ — (1) Included in our unconsolidated non-marketable and other equity securities portfolio at September 30, 2020 and December 31, 2019 are investments in qualified affordable housing projects of $561.0 million and $458.5 million, respectively, and related other liabilities consisting of unfunded commitments of $332.0 million and $302.0 million, respectively. Non-marketable and other equity securities Our non-marketable and other equity securities portfolio primarily represents investments in venture capital and private equity funds, SPD Silicon Valley Bank Co., Ltd. (the Bank's joint venture bank in China (“SPD-SVB”)), debt funds, private and public portfolio companies and qualified affordable housing projects. Many of these are investments held by SVB Financial in third-party funds in which we do not have controlling or significant variable interests. These investments represent our unconsolidated VIEs in the table above. Our non-marketable and other equity securities portfolio also includes investments from SVB Capital. SVB Capital is the funds management business of SVB Financial Group, which focuses primarily on venture capital investments. The SVB Capital family of funds is comprised of direct venture funds that invest in companies and funds of funds that invest in other venture capital funds. We have a controlling and significant variable interest in four of these SVB Capital funds and consolidate these funds for financial reporting purposes. All investments are generally nonredeemable, and distributions are expected to be received through the liquidation of the underlying investments throughout the life of the investment fund. Investments may only be sold or transferred subject to the notice and approval provisions of the underlying investment agreement. Subject to applicable regulatory requirements, including the Volcker Rule, we also make commitments to invest in venture capital and private equity funds. For additional details, see Note 15 — “Off-Balance Sheet Arrangements, Guarantees and Other Commitments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report. The Bank also has variable interests in low income housing tax credit funds, in connection with fulfilling its responsibilities under the CRA, that are designed to generate a return primarily through the realization of federal tax credits. These investments are typically limited partnerships in which the general partner, other than the Bank, holds the power over

Cash and Cash Equivalents

Cash and Cash Equivalents	9 Months Ended
Cash and Cash Equivalents	Sep. 30, 2020
Cash and Cash Equivalents [Abstract]
Cash and Cash Equivalents	Cash and Cash Equivalents The following table details our cash and cash equivalents at September 30, 2020 and December 31, 2019: (Dollars in thousands) September 30, 2020 December 31, 2019 Cash and due from banks (1) $ 15,237,612 $ 6,492,443 Securities purchased under agreements to resell (2) 450,164 289,340 Total cash and cash equivalents $ 15,687,776 $ 6,781,783 (1) At September 30, 2020 and December 31, 2019, $11.9 billion and $3.7 billion, respectively, of our cash and due from banks was deposited at the Federal Reserve Bank and was earning interest at the Federal Funds target rate, and interest-earning deposits in other financial institutions were $2.7 billion and $2.1 billion, respectively. (2) At September 30, 2020 and December 31, 2019, securities purchased und er agreements to resell were collateralized by U.S. Treasury securities and U.S. agency securities with aggregate fair value s of $459.1 million a n d $295.3 million, respectively. None of these securities were sold or repledged as of September 30, 2020 and December 31, 2019.

Investment Securities

Investment Securities	9 Months Ended
Investment Securities	Sep. 30, 2020
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities Our investment securities portfolio consists of: (i) an available-for-sale securities portfolio and a held-to-maturity securities portfolio, both of which represent interest-earning investment securities, and (ii) a non-marketable and other equity securities portfolio, which primarily represents investments managed as part of our funds management business, investments in qualified affordable housing projects, as well as public equity securities held as a result of equity warrant assets exercised. Available-for-Sale Securities The major components of our available-for-sale investment securities portfolio at September 30, 2020 and December 31, 2019 are as follows: September 30, 2020 (Dollars in thousands) Amortized Unrealized Unrealized Carrying Available-for-sale securities, at fair value: U.S. Treasury securities $ 4,251,342 $ 295,952 $ — $ 4,547,294 U.S. agency debentures 150,000 2,526 — 152,526 Foreign government debt securities 23,452 — (3) 23,449 Residential mortgage-backed securities: Agency-issued mortgage-backed securities 9,569,724 200,691 (102) 9,770,313 Agency-issued collateralized mortgage obligations—fixed rate 7,277,652 45,809 (7,488) 7,315,973 Agency-issued commercial mortgage-backed securities 3,965,370 130,384 (985) 4,094,769 Total available-for-sale securities $ 25,237,540 $ 675,362 $ (8,578) $ 25,904,324 December 31, 2019 (Dollars in thousands) Amortized Unrealized Unrealized Carrying Available-for-sale securities, at fair value: U.S. Treasury securities $ 6,815,874 $ 82,267 $ (4,131) $ 6,894,010 U.S. agency debentures 100,000 — (453) 99,547 Foreign government debt securities 9,037 1 — 9,038 Residential mortgage-backed securities: Agency-issued mortgage-backed securities 4,109,372 39,438 (19) 4,148,791 Agency-issued collateralized mortgage obligations—fixed rate 1,520,414 17,929 — 1,538,343 Agency-issued commercial mortgage-backed securities 1,339,651 1,078 (15,539) 1,325,190 Total available-for-sale securities $ 13,894,348 $ 140,713 $ (20,142) $ 14,014,919 The following table summarizes sale activity of available-for-sale securities during the three and nine months ended September 30, 2020 and 2019 as recorded in the line item “Gains on investment securities, net," a component of noninterest income: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Sales proceeds $ — $ — $ 2,654,212 $ 2,189,087 Net realized gains and losses: Gross realized gains — — 61,165 1,250 Gross realized losses — — — (5,155) Net realized gains (losses) $ — $ — $ 61,165 $ (3,905) The following tables summarize our available-for-sale securities in an unrealized loss position for which an allowance for credit losses has not been recorded and summarized into categories of less than 12 months, or 12 months or longer, as of September 30, 2020 and December 31, 2019: September 30, 2020 Less than 12 months 12 months or longer (1) Total (Dollars in thousands) Fair Value of Unrealized Fair Value of Unrealized Fair Value of Unrealized Available-for-sale securities: Foreign government debt securities $ 23,449 $ (3) $ — $ — $ 23,449 $ (3) Residential mortgage-backed securities: Agency-issued mortgage-backed securities 179,050 (102) — — 179,050 (102) Agency-issued collateralized mortgage obligations—fixed rate 1,772,593 (7,488) — — 1,772,593 (7,488) Agency-issued commercial mortgage-backed securities 518,223 (985) — — 518,223 (985) Total available-for-sale securities (1) $ 2,493,315 $ (8,578) $ — $ — $ 2,493,315 $ (8,578) (1) As of September 30, 2020, we identified a total of 57 investments that were in unrealized loss positions with no investment in an unrealized loss position for a period of time greater than 12 months. Based on our analysis of the securities in an unrealized loss position as of September 30, 2020, the decline in value is unrelated to credit loss and is related to changes in market interest rates since purchase and therefore changes in value for securities are included in other comprehensive income. Market valuations and credit loss analyses on assets in the available-for-sale securities portfolio are reviewed and monitored on a quarterly basis. As of September 30, 2020, we do not intend to sell any of our securities in an unrealized loss position prior to recovery of our amortized cost basis, and it is more likely than not that we will not be required to sell any of our securities prior to recovery of our amortized cost basis. None of the investments in our available-for-sale securities portfolio were past due as of September 30, 2020. December 31, 2019 Less than 12 months 12 months or longer (1) Total (Dollars in thousands) Fair Value of Unrealized Fair Value of Unrealized Fair Value of Unrealized Available-for-sale securities: U.S. Treasury securities $ 971,572 $ (3,996) $ 449,850 $ (135) $ 1,421,422 $ (4,131) U.S. agency debentures 99,547 (453) — — 99,547 (453) Residential mortgage-backed securities: Agency-issued mortgage-backed securities 4,014 (19) — — 4,014 (19) Agency-issued commercial mortgage-backed securities 1,027,232 (15,539) — — 1,027,232 (15,539) Total available-for-sale securities (1) $ 2,102,365 $ (20,007) $ 449,850 $ (135) $ 2,552,215 $ (20,142) (1) As of December 31, 2019, we identified a total of 58 investments that were in unrealized loss positions, of which 12 investments totaling $0.4 billion with unrealized losses of $0.1 million have been in an unrealized loss position for a period of time greater than 12 months. The following table summarizes the fixed income securities, carried at fair value, classified as available-for-sale as of September 30, 2020 by the remaining contractual principal maturities. For U.S. Treasury securities, U.S. agency debentures and foreign government debt securities, the expected maturity is the actual contractual maturity of the notes. Expected maturities for mortgage-backed securities may differ significantly from their contractual maturities because mortgage borrowers have the right to prepay outstanding loan obligations with or without penalties. Mortgage-backed securities classified as available-for-sale typically have original contractual maturities from 10 to 30 years whereas expected average lives of these securities tend to be significantly shorter and vary based upon structure and prepayments in lower interest rate environments. September 30, 2020 (Dollars in thousands) Total One Year After One After Five After U.S. Treasury securities $ 4,547,294 $ 60,221 $ 2,989,181 $ 1,497,892 $ — U.S. agency debentures 152,526 — — 152,526 — Foreign government debt securities 23,449 23,449 — — — Residential mortgage-backed securities: Agency-issued mortgage-backed securities 9,770,313 — — — 9,770,313 Agency-issued collateralized mortgage obligations—fixed rate 7,315,973 — — — 7,315,973 Agency-issued commercial mortgage-backed securities 4,094,769 — — 1,431,547 2,663,222 Total $ 25,904,324 $ 83,670 $ 2,989,181 $ 3,081,965 $ 19,749,508 Held-to-Maturity Securities The components of our held-to-maturity investment securities portfolio at September 30, 2020 and December 31, 2019 are as follows: September 30, 2020 (Dollars in thousands) Amortized Unrealized Unrealized Fair Value Allowance for Credit Losses (2) Held-to-maturity securities, at cost: U.S. agency debentures (1) $ 402,346 $ 19,496 $ — $ 421,842 $ — Residential mortgage-backed securities: Agency-issued mortgage-backed securities 5,363,541 266,455 (62) 5,629,934 — Agency-issued collateralized mortgage obligations —fixed rate 1,909,965 26,601 (437) 1,936,129 — Agency-issued collateralized mortgage obligations—variable rate 147,714 362 — 148,076 — Agency-issued commercial mortgage-backed securities 2,229,811 154,061 — 2,383,872 — Municipal bonds and notes 2,929,137 171,591 (8,118) 3,092,610 291 Total held-to-maturity securities $ 12,982,514 $ 638,566 $ (8,617) $ 13,612,463 $ 291 (1) Consists of pools of Small Business Investment Company debentures issued and guaranteed by the U.S. Small Business Administration, an independent agency of the United States. (2) Refer to Note 1 - "Basis of Presentation" of the "Notes to Interim Consolidated Financial Statements (unaudited)" under Part i, Item 1 of this report for more information on our credit loss methodology. December 31, 2019 (Dollars in thousands) Amortized Unrealized Unrealized Fair Value Held-to-maturity securities, at amortized cost: U.S. agency debentures (1) $ 518,728 $ 6,640 $ (668) $ 524,700 Residential mortgage-backed securities: Agency-issued mortgage-backed securities 6,992,009 142,209 (2,066) 7,132,152 Agency-issued collateralized mortgage obligations—fixed rate 1,608,032 592 (8,502) 1,600,122 Agency-issued collateralized mortgage obligations—variable rate 178,611 94 (259) 178,446 Agency-issued commercial mortgage-backed securities 2,759,615 56,914 (4,508) 2,812,021 Municipal bonds and notes 1,785,951 83,314 (1,434) 1,867,831 Total held-to-maturity securities $ 13,842,946 $ 289,763 $ (17,437) $ 14,115,272 (1) Consists of pools of Small Business Investment Company debentures issued and guaranteed by the U.S. Small Business Administration, an independent agency of the United States. Allowance for Credit Losses for HTM Securities The following table summarizes the activity relating to our allowance for credit losses for HTM securities for the three and nine months ended September 30, 2020: Three months ended September 30, Beginning Balance June 30, 2020 Provision for Credit Losses Ending Balance September 30, 2020 (Dollars in thousands) Municipal bonds and notes $ 222 $ 69 $ 291 Total allowance for credit losses $ 222 $ 69 $ 291 Nine months ended September 30, Beginning Balance December 31, 2019 Day One Impact of adopting ASC 326 Provision for Credit Losses Ending Balance September 30, 2020 (Dollars in thousands) Municipal bonds and notes $ — $ 174 $ 117 $ 291 Total allowance for credit losses $ — $ 174 $ 117 $ 291 Credit Quality Indicators On a quarterly basis, management monitors the credit quality for HTM securities through the use of standard credit ratings. The following table summarizes our amortized cost of HTM securities aggregated by credit quality indicator at September 30, 2020: (Dollars in thousands) September 30, 2020 Municipal bonds and notes: Aaa $ 1,732,450 Aa1 935,970 Aa2 259,767 Aa3 950 Total $ 2,929,137 The following table summarizes the remaining contractual principal maturities on fixed income investment securities classified as held-to-maturity as of September 30, 2020. For U.S. agency debentures, the expected maturity is the actual contractual maturity of the notes. Expected remaining maturities for certain U.S. agency debentures may occur earlier than their contractual maturities because the note issuers have the right to call outstanding amounts ahead of their contractual maturity. Expected maturities for mortgage-backed securities may differ significantly from their contractual maturities because mortgage borrowers have the right to prepay outstanding loan obligations with or without penalties. Mortgage-backed securities classified as held-to-maturity typically have original contractual maturities from 10 to 30 years whereas expected average lives of these securities tend to be significantly shorter and vary based upon structure and prepayments in lower interest rate environments. September 30, 2020 Total One Year After One Year to After Five Years to After (Dollars in thousands) Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value U.S. agency debentures $ 402,346 $ 421,842 $ 4,675 $ 4,720 $ 148,559 $ 153,787 $ 249,112 $ 263,335 $ — $ — Residential mortgage-backed securities: Agency-issued mortgage-backed securities 5,363,541 5,629,934 7,113 7,432 28,722 29,739 588,606 609,151 4,739,100 4,983,612 Agency-issued collateralized mortgage obligations — fixed rate 1,909,965 1,936,129 — — — — 551,213 563,127 1,358,752 1,373,002 Agency-issued collateralized mortgage obligations — variable rate 147,714 148,076 — — — — — — 147,714 148,076 Agency-issued commercial mortgage-backed securities 2,229,811 2,383,872 — — — — 102,428 120,085 2,127,383 2,263,787 Municipal bonds and notes 2,929,137 3,092,610 44,340 44,839 134,029 140,191 540,308 587,096 2,210,460 2,320,484 Total $ 12,982,514 $ 13,612,463 $ 56,128 $ 56,991 $ 311,310 $ 323,717 $ 2,031,667 $ 2,142,794 $ 10,583,409 $ 11,088,961 Non-marketable and Other Equity Securities The major components of our non-marketable and other equity securities portfolio at September 30, 2020 and December 31, 2019 are as follows: (Dollars in thousands) September 30, 2020 December 31, 2019 Non-marketable and other equity securities: Non-marketable securities (fair value accounting): Consolidated venture capital and private equity fund investments (1) $ 74,293 $ 87,180 Unconsolidated venture capital and private equity fund investments (2) 152,367 178,217 Other investments without a readily determinable fair value (3) 56,008 55,255 Other equity securities in public companies (fair value accounting) (4) 229,297 59,200 Non-marketable securities (equity method accounting) (5): Venture capital and private equity fund investments 274,721 215,367 Debt funds 6,918 7,271 Other investments 192,776 152,863 Investments in qualified affordable housing projects, net (6) 560,983 458,476 Total non-marketable and other equity securities $ 1,547,363 $ 1,213,829 (1) The following table shows the amounts of venture capital and private equity fund investments held by the following consolidated funds and our ownership percentage of each fund at September 30, 2020 and December 31, 2019 (fair value accounting): September 30, 2020 December 31, 2019 (Dollars in thousands) Amount Ownership % Amount Ownership % Strategic Investors Fund, LP $ 4,646 12.6 % $ 5,729 12.6 % Capital Preferred Return Fund, LP 39,246 20.0 45,341 20.0 Growth Partners, LP 30,267 33.0 35,976 33.0 CP I, LP 134 10.7 134 10.7 Total consolidated venture capital and private equity fund investments $ 74,293 $ 87,180 (2) The carrying value represents investments in 179 and 205 funds (primarily venture capital funds) at September 30, 2020 and December 31, 2019, respectively, where our ownership interest is typically less than 5% of the voting interests of each such fund and in which we do not have the ability to exercise significant influence over the partnerships operating activities and financial policies. We carry our unconsolidated venture capital and private equity fund investments at fair value based on the fund investments' net asset values per share as obtained from the general partners of the investments. For each fund investment, we adjust the net asset value per share for differences between our measurement date and the date of the fund investment’s net asset value by using the most recently available financial information from the investee general partner, for example June 30 th for our September 30 th consolidated financial statements, adjusted for any contributions paid, distributions received from the investment, and significant fund transactions or market events during the reporting period. (3) These investments include direct equity investments in private companies. The carrying value is based on the price at which the investment was acquired plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments. We consider a range of factors when adjusting the fair value of these investments, including, but not limited to, the term and nature of the investment, local market conditions, values for comparable securities, current and projected operating performance, exit strategies, financing transactions subsequent to the acquisition of the investment and a discount for certain investments that have lock-up restrictions or other features that indicate a discount to fair value is warranted. The following table shows the changes to the carrying amount of other investments without a readily determinable fair value for the nine months ended September 30, 2020: (Dollars in thousands) Nine months ended September 30, 2020 Cumulative Adjustments Measurement alternative: Carrying value at September 30, 2020 $ 56,008 Carrying value adjustments: Impairment $ (487) $ (947) Upward changes for observable prices 1,438 2,236 Downward changes for observable prices (6,210) (8,918) (4) Investments classified as other equity securities (fair value accounting) represent shares held in public companies as a result of exercising public equity warrant assets and direct equity investments in public companies held by our consolidated funds. Changes in equity securities measured at fair value are recognized through net income. This amount includes total unrealized gains of $108.4 million in BigCommerce Holdings, Inc. ("BigCommerce") which is currently subject to a lock-up agreement. (5) The following table shows the carrying value and our ownership percentage of each investment at September 30, 2020 and December 31, 2019 (equity method accounting): September 30, 2020 December 31, 2019 (Dollars in thousands) Amount Ownership % Amount Ownership % Venture capital and private equity fund investments: Strategic Investors Fund II, LP $ 3,519 8.6 % $ 3,612 8.6 % Strategic Investors Fund III, LP 14,984 5.9 15,668 5.9 Strategic Investors Fund IV, LP 25,451 5.0 27,064 5.0 Strategic Investors Fund V funds 52,575 Various 46,830 Various CP II, LP (i) 4,773 5.1 5,907 5.1 Other venture capital and private equity fund investments 173,419 Various 116,286 Various Total venture capital and private equity fund investments $ 274,721 $ 215,367 Debt funds: Gold Hill Capital 2008, LP (ii) $ 5,317 15.5 % $ 5,525 15.5 % Other debt funds 1,601 Various 1,746 Various Total debt funds $ 6,918 $ 7,271 Other investments: SPD Silicon Valley Bank Co., Ltd. $ 107,969 50.0 % $ 74,190 50.0 % Other investments 84,807 Various 78,673 Various Total other investments $ 192,776 $ 152,863 (i) Our ownership includes direct ownership interest of 1.3 percent and indirect ownership interest of 3.8 percent through our investments in Strategic Investors Fund II, LP. (ii) Our ownership includes direct ownership interest of 11.5 percent in the fund and an indirect interest in the fund through our investment in Gold Hill Capital 2008, LLC of 4.0 percent. (6) The following table presents the balances of our investments in qualified affordable housing projects and related unfunded commitments included as a component of “Other liabilities” on our consolidated balance sheets at September 30, 2020 and December 31, 2019: (Dollars in thousands) September 30, 2020 December 31, 2019 Investments in qualified affordable housing projects, net $ 560,983 $ 458,476 Other liabilities 332,031 302,031 The following table presents other information relating to our investments in qualified affordable housing projects for the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Tax credits and other tax benefits recognized $ 15,290 $ 8,705 $ 46,772 $ 28,950 Amortization expense included in provision for income taxes (i) 10,222 6,042 32,081 20,436 (i) All investments are amortized using the proportional amortization method and amortization expense is included in the provision for income taxes. The following table presents the net gains and losses on non-marketable and other equity securities for the three and nine months ended September 30, 2020 and 2019 as recorded in the line item “Gains on investment securities, net," a component of noninterest income: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Net gains (losses) on non-marketable and other equity securities: Non-marketable securities (fair value accounting): Consolidated venture capital and private equity fund investments $ 8,778 $ 4,555 $ 13,168 $ 22,674 Unconsolidated venture capital and private equity fund investments 16,400 8,530 15,187 26,688 Other investments without a readily determinable fair value 217 (471) (3,619) 4,701 Other equity securities in public companies (fair value accounting) 112,615 (11,979) 118,099 106 Non-marketable securities (equity method accounting): Venture capital and private equity fund investments 51,334 29,049 69,681 54,189 Debt funds 15 187 (253) 1,529 Other investments 478 (22) (2,668) 593 Total net gains on non-marketable and other equity securities $ 189,837 $ 29,849 $ 209,595 $ 110,480 Less: realized net gains on sales of non-marketable and other equity securities 5,262 277 5,477 12,637 Net gains on non-marketable and other equity securities still held $ 184,575 $ 29,572 $ 204,118 $ 97,843

Loans, Allowance for Loan Losse

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments	9 Months Ended
	Sep. 30, 2020
Receivables [Abstract]
Loans and Allowance for Credit Losses: Loans and Unfunded Credit Commitments	Loans and Allowance for Credit Losses: Loans and Unfunded Credit CommitmentsWe serve a variety of commercial clients in the technology, life science/healthcare, private equity/venture capital and premium wine industries. Our technology clients generally tend to be in the industries of hardware (such as semiconductors, communications, data, storage and electronics), software/internet (such as infrastructure software, applications, software services, digital content and advertising technology) and energy and resource innovation (“ERI”). Our life science/healthcare clients primarily tend to be in the industries of biotechnology, medical devices, healthcare information technology and healthcare services. Loans to our technology, life science/healthcare and ERI clients are reported under the Investor Dependent, Cash Flow Dependent and Balance Sheet Dependent risk-based segments below. Loans made to private equity/venture capital firm clients typically enable them to fund investments prior to their receipt of funds from capital calls and are reported under the Global Fund Banking (previously Private Equity/Venture Capital) portfolio segment below. Loans to the premium wine industry focus on vineyards and wineries that produce grapes and wines of high quality. In addition to commercial loans, we make consumer loans through SVB Private Bank and provide real estate secured loans to eligible employees through our EHOP. We also provide community development loans made as part of our responsibilities under the CRA. These loans are included within “construction loans” below and are primarily secured by real estate. Additionally, beginning in April 2020, we accepted applications under the PPP administered by the SBA under the Coronavirus Aid, Relief, and Economic Security Act (the "CARES Act") and originated loans to qualified small businesses. CECL Adoption On January 1, 2020, we adopted the new credit loss guidance, CECL, and all related amendments. Our loan portfolio was pooled into six portfolio segments that share similar risk characteristics and represent the level at which we developed our systematic methodology to determine our allowance for credit losses. Further, our portfolio segments were disaggregated and grouped into ten classes of financing receivable that represent the level at which we monitor and assess credit risk, which we refer to as "risk-based segments". As such, our funded loans and credit quality disclosures below are presented at the risk-based segment level of disaggregation. As of September 30, 2020, we have six portfolio segments and eleven risk-based segments reflective of the funding of SBA loans under the PPP. The comparative information below has been reclassified to conform to current period risk-based segment presentations. However, the financial results continue to be reported under the accounting standards in effect for those periods. Certain prior period credit quality disclosures related to impaired loans and our individually and collectively evaluated loan portfolio have been superseded with the current guidance and have not been included below, please refer to Note 10 - “Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments" under Part II, Item 8 of our 2019 Form 10-K for additional prior period information. Refer to Note 1 — “Basis of Presentation” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional information regarding the adoption of CECL. The composition of loans at amortized cost basis broken out by risk-based segment at September 30, 2020 and December 31, 2019 is presented in the following table: (Dollars in thousands) September 30, 2020 December 31, 2019 Global fund banking $ 19,584,518 $ 17,696,794 Investor dependent: Early stage 1,470,941 1,624,221 Mid stage 1,626,794 1,047,398 Later stage 2,013,934 1,663,576 Total investor dependent 5,111,669 4,335,195 Cash flow dependent: Sponsor led buyout 2,062,243 2,185,497 Other 2,600,157 2,238,741 Total cash flow dependent 4,662,400 4,424,238 Private bank (1) (5) 4,424,899 3,492,269 Balance sheet dependent 1,698,220 1,286,153 Premium wine (1) (5) 1,081,963 1,062,264 Other (1) (5) 48,206 867,723 SBA loans 1,802,016 — Total loans (2) (3) (4) $ 38,413,891 $ 33,164,636 Allowance for credit losses (512,958) (304,924) Net loans $ 37,900,933 $ 32,859,712 (1) As of September 30, 2020, as a result of enhanced portfolio characteristic definitions for our risk-based segments, loans in the amount of $411.2 million and $50.3 million that would have been reported in Other under historical definitions, are now being reported in our Private Bank and Premium Wine risk-based segments, respectively. (2) Total loans at amortized cost is net of unearned income of $222 million and $163 million at September 30, 2020 and December 31, 2019, respectively. (3) Included within our total loan portfolio are credit card loans of $329 million and $395 million at September 30, 2020 and December 31, 2019, respectively. (4) Included within our total loan portfolio are construction loans of $118 million and $183 million at September 30, 2020 and December 31, 2019, respectively. (5) Of our total loans, the table below includes those secured by real estate at amortized cost at September 30, 2020 and December 31, 2019 and were comprised of the following: (Dollars in thousands) September 30, 2020 December 31, 2019 Real estate secured loans: Private bank: Loans for personal residence $ 3,179,148 $ 2,829,880 Loans to eligible employees 449,551 401,396 Home equity lines of credit 50,929 55,461 Other 137,320 38,880 Total private bank loans secured by real estate $ 3,816,948 $ 3,325,617 Premium wine 831,182 820,730 Other 60,501 — Total real estate secured loans $ 4,708,631 $ 4,146,347 Credit Quality Indicators For each individual client, we establish an internal credit risk rating for that loan, which is used for assessing and monitoring credit risk as well as performance of the loan and the overall portfolio. Our internal credit risk ratings are also used to summarize the risk of loss due to failure by an individual borrower to repay the loan. For our internal credit risk ratings, each individual loan is given a risk rating of 1 through 10. Loans risk-rated 1 through 4 are performing loans and translate to an internal rating of “Pass,” with loans risk-rated 1 being cash secured. Loans risk-rated 5 through 7 are performing loans; however, we consider them as demonstrating higher risk, which requires more frequent review of the individual exposures; these translate to an internal rating of “Criticized.” All of our nonaccrual loans are risk-rated 8 or 9 and are classified under the nonperforming category. Loans rated 10 are charged-off and are not included as part of our loan portfolio balance. We review our credit quality indicators on a quarterly basis for performance and appropriateness of risk ratings as part of our evaluation process for our allowance for credit losses for loans. The following table summarizes the credit quality indicators, broken out by risk-based segment, as of September 30, 2020 and December 31, 2019: (Dollars in thousands) Pass Criticized Nonperforming (Nonaccrual) Total September 30, 2020: Global fund banking $ 19,576,723 $ 7,782 $ 13 $ 19,584,518 Investor dependent: Early stage 1,296,789 154,420 19,732 1,470,941 Mid stage 1,449,525 165,642 11,627 1,626,794 Later stage 1,795,229 180,130 38,575 2,013,934 Total investor dependent 4,541,543 500,192 69,934 5,111,669 Cash flow dependent: Sponsor led buyout 1,827,943 212,708 21,592 2,062,243 Other 2,314,453 279,419 6,285 2,600,157 Total cash flow dependent 4,142,396 492,127 27,877 4,662,400 Private bank 4,395,531 23,936 5,432 4,424,899 Balance sheet dependent 1,565,597 131,947 676 1,698,220 Premium wine 941,511 138,777 1,675 1,081,963 Other 48,041 61 104 48,206 SBA loans 1,663,383 138,633 — 1,802,016 Total loans (1) $ 36,874,725 $ 1,433,455 $ 105,711 $ 38,413,891 December 31, 2019: Global fund banking $ 17,708,550 $ 4,247 $ — $ 17,712,797 Investor dependent Early stage 1,436,022 206,310 11,093 1,653,425 Mid stage 924,002 125,451 17,330 1,066,783 Later stage 1,490,561 201,819 6,296 1,698,676 Total investor dependent 3,850,585 533,580 34,719 4,418,884 Cash flow dependent Sponsor led buyout 2,039,847 118,588 44,585 2,203,020 Other 2,141,766 93,400 17,681 2,252,847 Total cash flow dependent 4,181,613 211,988 62,266 4,455,867 Private bank 3,472,138 11,601 5,480 3,489,219 Balance sheet dependent 1,231,961 65,343 — 1,297,304 Premium wine 1,026,973 36,335 204 1,063,512 Other 890,059 62 — 890,121 Total loans (1) $ 32,361,879 $ 863,156 $ 102,669 $ 33,327,704 (1) As of September 30, 2020, loan amounts are disclosed using the amortized cost basis as a result of the adoption of CECL. Prior period loan amounts are disclosed using the gross basis. The following table summarizes the credit quality indicators, broken out by risk-based segment and vintage year, as of September 30, 2020: Term Loans by Origination Year (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Global fund banking: Risk rating: Pass $ 271,164 $ 156,714 $ 70,084 $ 36,907 $ 2,552 $ 11,588 $ 19,022,934 $ 4,780 $ 19,576,723 Criticized 8 — — — — — 994 6,780 7,782 Nonperforming — 8 — — — — 5 — 13 Total global fund banking $ 271,172 $ 156,722 $ 70,084 $ 36,907 $ 2,552 $ 11,588 $ 19,023,933 $ 11,560 $ 19,584,518 Investor dependent: Early stage: Risk rating: Pass $ 589,224 $ 452,550 $ 140,448 $ 37,911 $ 2,430 $ 390 $ 73,199 $ 637 $ 1,296,789 Criticized 20,744 68,381 36,841 10,878 2,530 363 13,750 933 154,420 Nonperforming 2,466 8,870 6,956 463 — 4 973 — 19,732 Total early stage $ 612,434 $ 529,801 $ 184,245 $ 49,252 $ 4,960 $ 757 $ 87,922 $ 1,570 $ 1,470,941 Mid stage: Risk rating: Pass $ 726,708 $ 344,458 $ 209,372 $ 39,603 $ 7,510 $ 2,725 $ 116,655 $ 2,494 $ 1,449,525 Criticized 59,623 43,386 32,668 12,725 1,966 — 15,274 — 165,642 Nonperforming 2 2,558 5,405 3,519 — — 143 — 11,627 Total mid stage $ 786,333 $ 390,402 $ 247,445 $ 55,847 $ 9,476 $ 2,725 $ 132,072 $ 2,494 $ 1,626,794 Later stage: Risk rating: Pass $ 790,085 $ 473,800 $ 178,768 $ 60,009 $ 562 $ 9,110 $ 277,911 $ 4,984 $ 1,795,229 Criticized 17,108 72,028 30,280 2,666 — 8,708 49,340 — 180,130 Nonperforming 17,506 1,886 12,434 — — — 6,749 — 38,575 Total later stage $ 824,699 $ 547,714 $ 221,482 $ 62,675 $ 562 $ 17,818 $ 334,000 $ 4,984 $ 2,013,934 Total investor dependent $ 2,223,466 $ 1,467,917 $ 653,172 $ 167,774 $ 14,998 $ 21,300 $ 553,994 $ 9,048 $ 5,111,669 Cash flow dependent: Sponsor led buyout: Risk rating: Pass $ 534,579 $ 601,938 $ 326,172 $ 226,326 $ 50,267 $ — $ 88,661 $ — $ 1,827,943 Criticized 43,221 70,050 53,043 21,400 12,238 — 12,756 — 212,708 Nonperforming 33 11,907 — 7,200 — — 2,452 — 21,592 Total sponsor led buyout $ 577,833 $ 683,895 $ 379,215 $ 254,926 $ 62,505 $ — $ 103,869 $ — $ 2,062,243 Other Risk rating: Pass $ 465,243 $ 574,231 $ 189,501 $ 116,918 $ 39,627 $ 346 $ 928,587 $ — $ 2,314,453 Criticized 9,589 55,118 74,916 956 416 — 138,424 — 279,419 Nonperforming — — 3,845 — — — 2,440 — 6,285 Total other $ 474,832 $ 629,349 $ 268,262 $ 117,874 $ 40,043 $ 346 $ 1,069,451 $ — $ 2,600,157 Total cash flow dependent $ 1,052,665 $ 1,313,244 $ 647,477 $ 372,800 $ 102,548 $ 346 $ 1,173,320 $ — $ 4,662,400 Private bank: Risk rating: Pass $ 1,191,024 $ 1,212,000 $ 420,440 $ 397,847 $ 342,594 $ 463,198 $ 368,107 $ 321 $ 4,395,531 Criticized 1,456 5,549 3,040 1,201 5,101 6,802 787 — 23,936 Nonperforming — 520 2,475 — — 1,702 735 — 5,432 Total private bank $ 1,192,480 $ 1,218,069 $ 425,955 $ 399,048 $ 347,695 $ 471,702 $ 369,629 $ 321 $ 4,424,899 Balance sheet dependent: Risk rating: Pass $ 374,768 $ 202,185 $ 237,529 $ 31,838 $ — $ — $ 717,771 $ 1,506 $ 1,565,597 Criticized 60,238 8,877 5,559 610 — — 56,663 — 131,947 Nonperforming — — — — — 675 1 — 676 Total balance sheet dependent $ 435,006 $ 211,062 $ 243,088 $ 32,448 $ — $ 675 $ 774,435 $ 1,506 $ 1,698,220 Premium wine: Risk rating: Pass $ 154,624 $ 181,416 $ 70,297 $ 84,221 $ 102,297 $ 156,397 $ 154,685 $ 37,574 $ 941,511 Criticized 14,001 26,446 35,898 338 13,674 8,210 40,210 — 138,777 Nonperforming — — — — 1,662 — 13 — 1,675 Total Premium wine $ 168,625 $ 207,862 $ 106,195 $ 84,559 $ 117,633 $ 164,607 $ 194,908 $ 37,574 $ 1,081,963 Other: Risk rating: Pass $ 1,474 $ 23,286 $ 13,092 $ 1,900 $ — $ 80 $ 8,209 $ — $ 48,041 Criticized 22 — — — — — 39 — 61 Nonperforming — 104 — — — — — — 104 Total other $ 1,496 $ 23,390 $ 13,092 $ 1,900 $ — $ 80 $ 8,248 $ — $ 48,206 SBA loans: Risk rating: Pass $ 1,663,383 $ — $ — $ — $ — $ — $ — $ — $ 1,663,383 Criticized 138,633 — — — — — — — 138,633 Nonperforming — — — — — — — — — Total SBA loans $ 1,802,016 $ — $ — $ — $ — $ — $ — $ — $ 1,802,016 Total loans $ 7,146,926 $ 4,598,266 $ 2,159,063 $ 1,095,436 $ 585,426 $ 670,298 $ 22,098,467 $ 60,009 $ 38,413,891 Allowance for Credit Losses: Loans In the third quarter of 2020, ACL for loans decreased $76.9 million primarily driven by an improved economic forecast in Moody’s Analytics September 2020 forecast utilized in our quantitative model, as compared to the forecast utilized in June 2020. Those assumptions included an improvement in the unemployment rate as a result of businesses re-opening and the effect of government aid programs. The gross domestic product contraction rate also improved in the September 2020 forecast. We determined the above forecast to be a reasonable view of the outlook for the economy given the available information at current quarter end. To the extent we identified credit risk considerations that were not captured by the Moody's Analytics September 2020 forecast, we addressed the risk through management's qualitative adjustments to our ACL. The following tables summarize the activity relating to our allowance for credit losses for loans for the three and nine months ended September 30, 2020 and 2019, broken out by risk-based segment: Three months ended September 30, 2020 Beginning Balance June 30, 2020 Charge-offs Recoveries (Reduction) Provision for Credit Losses Foreign Currency Translation Adjustments Ending Balance September 30, 2020 (Dollars in thousands) Global fund banking $ 53,723 $ — $ — $ (14,734) $ — $ 38,989 Investor dependent: Early stage 148,270 (14,950) 2,511 (33,171) (101) 102,559 Mid stage 56,393 (7,162) 697 12,578 (88) 62,418 Later stage 87,604 (6,205) 600 15,792 (80) 97,711 Total investor dependent 292,267 (28,317) 3,808 (4,801) (269) 262,688 Cash flow dependent: Sponsor led buyout 54,853 (130) — (3,062) — 51,661 Other 43,100 — — (2,779) — 40,321 Total cash flow dependent 97,953 (130) — (5,841) — 91,982 Private bank 91,345 — 15 (14,881) — 76,479 Balance sheet dependent 24,728 — — 4,341 — 29,069 Premium wine 12,319 — — (1,914) — 10,405 Other 13,635 (2) 531 (14,898) 1,600 866 SBA loans 3,858 — — (1,378) — 2,480 Total allowance for credit losses $ 589,828 $ (28,449) $ 4,354 $ (54,106) $ 1,331 $ 512,958 Three months ended September 30, 2019 Beginning Balance June 30, 2019 Charge-offs Recoveries Provision for (Reduction) Credit Losses Foreign Currency Translation Adjustments Ending Balance September 30, 2019 (Dollars in thousands) Global fund banking $ 101,253 $ — $ 1,200 $ 1,485 $ (22) $ 103,916 Investor dependent: Early stage 30,969 (7,524) 1,760 5,783 (85) 30,903 Mid stage 28,264 (16,581) 385 5,778 (85) 17,761 Later stage 37,940 (11,449) 276 17,513 (259) 44,021 Total investor dependent 97,173 (35,554) 2,421 29,074 (429) 92,685 Cash flow dependent: Sponsor led buyout 32,131 — — 9,663 (143) 41,651 Other 24,551 — 250 (3,199) 47 21,649 Total cash flow dependent 56,682 — 250 6,464 (96) 63,300 Private Bank 20,397 — 15 1,307 (19) 21,700 Balance sheet dependent 17,256 — — (2,496) 37 14,797 Premium wine 4,227 — — 27 — 4,254 Other 4,900 (1,266) 2 124 (2) 3,758 Total allowance for credit losses $ 301,888 $ (36,820) $ 3,888 $ 35,985 $ (531) $ 304,410 Nine months ended September 30, 2020 Beginning Balance December 31, 2019 Impact of adopting ASC 326 Charge-offs Recoveries Provision for (Reduction) Credit Losses Foreign Currency Translation Adjustments Ending Balance September 30, 2020 (Dollars in thousands) Global fund banking $ 107,285 $ (69,888) $ — $ — $ 1,772 $ (180) $ 38,989 Investor dependent: Early stage 26,245 39,911 (26,897) 6,474 57,494 (668) 102,559 Mid stage 15,936 6,963 (20,147) 5,303 54,584 (221) 62,418 Later stage 40,189 24,750 (20,189) 600 52,880 (519) 97,711 Total investor dependent 82,370 71,624 (67,233) 12,377 164,958 (1,408) 262,688 Cash flow dependent: Sponsor led buyout 42,939 3,151 (2,754) 2,845 5,613 (133) 51,661 Other 25,159 (3,056) (3,385) 1 21,727 (125) 40,321 Total cash flow dependent 68,098 95 (6,139) 2,846 27,340 (258) 91,982 Private bank 21,551 12,615 (1,616) 15 44,194 (280) 76,479 Balance sheet dependent 12,722 (1,364) (4,900) — 22,685 (74) 29,069 Premium wine 5,296 3,650 (192) — 1,691 (40) 10,405 Other 7,602 8,732 (320) 944 (18,426) 2,334 866 SBA loans — — — — 2,480 — 2,480 Total allowance for credit losses $ 304,924 $ 25,464 $ (80,400) $ 16,182 $ 246,694 $ 94 $ 512,958 Nine months ended September 30, 2019 Beginning Balance December 31, 2018 Charge-offs Recoveries Provision for (Reduction) Credit Losses Foreign Currency Translation Adjustments Ending Balance September 30, 2019 (Dollars in thousands) Global fund banking $ 93,781 $ (2,047) $ 1,200 $ 11,304 $ (322) $ 103,916 Investor dependent: Early stage 25,885 (16,819) 5,685 16,547 (395) 30,903 Mid stage 20,999 (36,492) 1,288 31,443 523 17,761 Later stage 25,217 (11,449) 2,053 28,616 (416) 44,021 Total investor dependent 72,101 (64,760) 9,026 76,606 (288) 92,685 Cash flow dependent: Sponsor led buyout 44,274 (2,402) — (253) 32 41,651 Other 21,754 (716) 4,647 (4,083) 47 21,649 Total cash flow dependent 66,028 (3,118) 4,647 (4,336) 79 63,300 Private Bank 20,583 (1,019) 240 1,999 (103) 21,700 Balance sheet dependent 21,707 — — (7,135) 225 14,797 Premium wine 3,646 — — 611 (3) 4,254 Other 3,057 (1,311) 20 1,905 87 3,758 Total allowance for credit losses $ 280,903 $ (72,255) $ 15,133 $ 80,954 $ (325) $ 304,410 The following table summarizes the aging of our loans broken out by risk-based segment as of September 30, 2020 and December 31, 2019: (Dollars in thousands) 30 - 59 60 - 89 Equal to or Greater Total Past Current Total Loans Past Due September 30, 2020: Global fund banking $ 6,285 $ — $ 14 $ 6,299 $ 19,578,219 $ 19,584,518 $ — Investor dependent: Early stage 605 323 367 1,295 1,469,646 1,470,941 — Mid stage 250 145 211 606 1,626,188 1,626,794 — Later stage 51 — — 51 2,013,883 2,013,934 — Total investor dependent 906 468 578 1,952 5,109,717 5,111,669 — Cash flow dependent: Sponsor led buyout — — — — 2,062,243 2,062,243 — Other 742 3 — 745 2,599,412 2,600,157 — Total cash flow dependent 742 3 — 745 4,661,655 4,662,400 — Private bank 4 4 — 8 4,424,891 4,424,899 — Balance sheet dependent 2,851 7 — 2,858 1,695,362 1,698,220 — Premium wine 3,117 4,355 — 7,472 1,074,491 1,081,963 — Other 23 — 155 178 48,028 48,206 — SBA loans — — — — 1,802,016 1,802,016 — Total loans (1) $ 13,928 $ 4,837 $ 747 $ 19,512 $ 38,394,379 $ 38,413,891 $ — December 31, 2019: Global fund banking $ 97,739 $ 383 $ 3,150 $ 101,272 $ 17,611,525 $ 17,712,797 $ 3,150 Investor dependent: Early stage 1,307 22,062 723 24,092 1,629,333 1,653,425 — Mid stage 10,025 6,999 — 17,024 1,049,759 1,066,783 — Later stage 8,113 500 10,569 19,182 1,679,494 1,698,676 — Total investor dependent 19,445 29,561 11,292 60,298 4,358,586 4,418,884 — Cash flow dependent Sponsor led buyout — — — — 2,203,020 2,203,020 — Other 2,426 3,061 2 5,489 2,247,358 2,252,847 — Total cash flow dependent 2,426 3,061 2 5,489 4,450,378 4,455,867 — Private bank 6,582 2,049 1,544 10,175 3,479,044 3,489,219 365 Balance sheet dependent 2,731 — — 2,731 1,294,573 1,297,304 — Premium wine 8,435 3,170 — 11,605 1,051,907 1,063,512 — Other 17 — — 17 890,104 890,121 — Total loans (1) $ 137,375 $ 38,224 $ 15,988 $ 191,587 $ 33,136,117 $ 33,327,704 $ 3,515 (1) As of September 30, 2020, loan amounts are disclosed using the amortized cost basis as a result of the adoption of CECL. Prior period loan amounts are disclosed using the gross basis. Nonaccrual Loans The following tables summarize our nonaccrual loan activity by risk-based segment for the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, 2020 Beginning Balance June 30, 2020 Additions Paydowns and Other Reductions Charge-offs Ending Balance September 30, 2020 (Dollars in thousands) Global fund banking $ 9 $ 6 $ (2) $ — $ 13 Investor dependent: Early stage 24,422 6,269 (2,790) (8,169) 19,732 Mid stage 8,119 10,290 (292) (6,490) 11,627 Later stage 10,498 36,779 (3,500) (5,202) 38,575 Total investor dependent 43,039 53,338 (6,582) (19,861) 69,934 Cash flow dependent: Sponsor led buyout 21,658 172 (238) — 21,592 Other 5,317 12,356 (11,388) — 6,285 Total cash flow dependent 26,975 12,528 (11,626) — 27,877 Private bank 6,517 3,348 (4,433) — 5,432 Balance sheet dependent 11,842 675 (11,841) — 676 Premium wine 1,681 — (6) — 1,675 Other 61 105 (62) — 104 SBA loans 4,202 — (4,202) — — Total nonaccrual loans $ 94,326 $ 70,000 $ (38,754) $ (19,861) $ 105,711 Three months ended September 30, 2019 Beginning Balance June 30, 2019 Additions Paydowns and Other Reductions Charge-offs Ending Balance September 30, 2019 (Dollars in thousands) Global fund banking $ — $ — $ — $ — $ — Investor dependent: Early stage 10,290 12,409 (2,172) (1,569) 18,958 Mid stage 28,699 6 (8,151) (15,323) 5,231 Later stage 38,346 2,216 (6,462) (6,837) 27,263 Total investor dependent 77,335 14,631 (16,785) (23,729) 51,452 Cash flow dependent: Sponsor led buyout 8,365 37,294 (640) — 45,019 Other 79 13 — — 92 Total cash flow dependent 8,444 37,307 (640) — 45,111 Private bank 5,644 1,531 (86) — 7,089 Balance sheet dependent 4,974 — (4,974) — — Premium wine 244 174 (25) — 393 Other — — — — — Total nonaccrual loans (1) $ 96,641 $ 53,643 $ (22,510) $ (23,729) $ 104,045 Nine months ended September 30, 2020 Beginning Balance December 31, 2019 Additions Paydowns and Other Reductions Charge-offs Ending Balance September 30, 2020 (Dollars in thousands) Global fund banking $ — $ 15 $ (2) $ — $ 13 Investor dependent: Early stage 11,093 28,218 (8,695) (10,884) 19,732 Mid stage 17,330 22,875 (1,079) (27,499) 11,627 Later stage 6,296 48,962 (8,276) (8,407) 38,575 Total investor dependent 34,719 100,055 (18,050) (46,790) 69,934 Cash flow dependent: Sponsor led buyout 44,585 21,830 (42,199) (2,624) 21,592 Other 17,681 20,936 (32,314) (18) 6,285 Total cash flow dependent 62,266 42,766 (74,513) (2,642) 27,877 Private bank 5,480 5,982 (5,449) (581) 5,432 Balance sheet dependent — 17,417 (16,741) — 676 Premium wine 204 1,686 (23) (192) 1,675 Other — 339 (235) — 104 SBA loans — 4,202 (4,202) — — Total nonaccrual loans (1) $ 102,669 $ 172,462 $ (119,215) $ (50,205) $ 105,711 Nine months ended September 30, 2019 Beginning Balance December 31, 2018 Additions Paydowns and Other Reductions Charge-offs Ending Balance September 30, 2019 (Dollars in thousands) Global fund banking $ 3,700 $ 2,247 $ (3,900) $ (2,047) $ — Investor dependent: Early stage 7,616 25,221 (10,615) (3,264) 18,958 Mid stage 4,751 42,497 (9,541) (32,476) 5,231 Later stage 11,385 32,786 (10,071) (6,837) 27,263 Total investor dependent 23,752 100,504 (30,227) (42,577) 51,452 Cash flow dependent: Sponsor led buyout 39,534 37,294 (29,407) (2,402) 45,019 Other 17,156 92 (16,690) (466) 92 Total cash flow dependent 56,690 37,386 (46,097) (2,868) 45,111 Private bank 3,919 3,411 (174) (67) 7,089 Balance sheet dependent 5,004 238 (5,242) — — Premium wine 285 174 (66) — 393 Other 792 — (792) — — Total nonaccrual loans (1) $ 94,142 $ 143,960 $ (86,498) $ (47,559) $ 104,045 (1) For the three and nine months ended September 30, 2020, loan amounts are disclosed using the amortized cost basis as a result of the adoption of CECL. Prior period loan amounts are disclosed using the gross basis. The following table summarizes our nonaccrual loans with no allowance for credit loss at September 30, 2020 and December 31, 2019: September 30, 2020 December 31, 2019 (Dollars in thousands) Nonaccrual Loans Nonaccrual Loans with no Allowance for Credit Loss Nonaccrual Loans Nonaccrual Loans with no Allowance for Credit Loss Global fund banking $ 13 $ 8 $ — $ — Investor dependent: Early stage 19,732 10 11,093 460 Mid stage 11,627 — 17,330 274 Later stage 38,575 — 6,296 — Total investor dependent 69,934 10 34,719 734 Cash flow dependent: Sponsor led buyout 21,592 — 44,585 — Other 6,285 705 17,681 2,782 Total cash flow dependent 27,877 705 62,266 2,782 Private bank 5,432 4,912 5,480 3,714 Balance sheet dependent 676 — — — Premium wine 1,675 998 204 — Other 104 104 — — SBA loans — — — — Total nonaccrual loans (1) $ 105,711 $ 6,737 $ 102,669 $ 7,230 (1) As of September 30, 2020, loan amounts are disclosed using the amortized cost basis as a result of the adoption of CECL. Prior period loan amounts are disclosed using the gross basis. Troubled Debt Restructurings As of September 30, 2020, we had 16 TDRs with a total carrying value of $50.5 million where concessions have been granted to borrowers experiencing financial difficulties, in an attempt to maximize collection. There were no unfunded commitments available for funding to the clients associated with these TDRs as of September 30, 2020. The following table summarizes our loans modified in TDRs, broken out by risk-based segment, at September 30, 2020 and December 31, 2019: (Dollars in thousands) September 30, 2020 December 31, 2019 Loans modified in TDRs: Global fund banking $ — $ — Investor dependent: Early stage 7,771 9,471 Mid stage 3,781 5,189 Later stage 3,297 23,318 Total investor dependent 14,849 37,978 Cash flow dependent: Sponsor led buyout 30,799 55,443 Other 855 — Total cash flow dependent 31,654 55,443 Private bank — 2,104 Balance sheet dependent 675 — Premium wine 3,341 13,457 Other — — SBA loans — — Total loans modified in TDRs (1) $ 50,519 $ 108,982 (1) As of September 30, 2020, loan amounts are disclosed using the amortized cost basis as a result of the adoption of CECL. Prior period loan amounts are disclosed using the gross basis. The following table summarizes the recorded investment in loans modified in TDRs, broken out by risk-based segment, for modifications made during the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Loans modified in TDRs during the period: Global fund banking $ — $ — $ — $ — Investor dependent: Early stage 4,043 2,205 4,193 2,205 Mid stage — — 209 3,480 Later stage — 6,361 3,297 17,324 Total investor dependent 4,043 8,566 7,699 23,009 Cash flow dependent: Sponsor led buyout 21,611 — 21,611 48,604 Other — — 855 — Total cash flow dependent 21,611 — 22,466 48,604 Private bank — — — 1,826 Balance sheet dependent 675 — 675 — Premium wine — — 998 — Other — — — — SBA loans — — — — Total loans modified in TDRs during the period (1) (2) $ 26,329 $ 8,566 $ 31,838 $ 73,439 (1) For the three and nine months ended September 30, 2020, loan amounts are disclosed using the amortized cost basis as a result of the adoption of CECL. Prior period loan amounts are disclosed using the gross basis. (2) There were $13.6 million and $31.1 million of partial charge-offs for the three and nine months ended September 30, 2020, respectively, and $3.7 million and $9.2 million of partial charge-offs for the three and nine months ended September 30, 2019. During the three months ended September 30, 2020, new TDRs of $25.6 million were modified through payment deferrals granted to our clients and $0.7 million were modified through forgiveness of principal. During the nine months ended September 30, 2020, new TDRs of $30.9 million were modified through payment deferrals granted to our clients and $0.9 million were modified through forgiveness of principal. During the three and nine months ended September 30, 2019 , $6.4 million and $69.4 million, respectively, were modified through payment deferrals granted to our clients. During the three and nine months ended September 30, 2019, $2.2 million and $4.0 million, respectively, were modified through partial forgiveness of principal. The following table summarizes the recorded investment in loans modified in TDRs within the previous 12 months that subsequently defaulted during the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 TDRs modified within the previous 12 months that defaulted during the period: Global fund banking $ — $ — $ — $ — Investor dependent: Early stage — — — — Mid stage — — — — Later stage — 10,963 — 10,963 Total investor dependent — 10,963 — 10,963 Cash flow dependent: Sponsor led buyout — 37,294 — 37,294 Other — — — — Total cash flow dependent — 37,294 — 37,294 Private bank — — — — Balance sheet dependent — — — — Premium wine 998 — 998 — Other — — — — SBA loans — — — — Total TDRs modified within the previous 12 months that defaulted in the period (1) $ 998 $ 48,257 $ 998 $ 48,257 (1) For the three and nine months ended September 30, 2020, loan amounts are disclosed using the amortized cost basis as a result of the adoption of CECL. Prior period loan amounts are disclosed using the gross basis. Charge-offs and defaults on previously restructured loans are evaluated to determine the impact to the allowance for credit losses for loans, if any. The evaluation of these defaults may impact the assumptions used in calculating the reserve on other TDRs and nonaccrual loans as well as management’s overall outlook of macroeconomic factors that affect the reserve on the loan portfolio as a whole. After evaluating the charge-offs and defaults experienced on our TDRs we determined that no change to our reserving methodology for TDRs was necessary to determine the allowance for credit losses for loans as of September 30, 2020. Allowance for Credit Losses: Unfunded Credit Commitments We maintain a separate allowance for credit losses for unfunded credit commitments that is determined using a methodology that is inherently similar to the methodology used for calculating the allowance for credit losses for loans. At September 30, 2020, our ACL estimates utilized the improved Moody's economic forecasts from September 2020 as mentioned above. The following table summarizes the activity relating to our allowance for credit losses for unfunded credit commitments for the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Allowance for credit losses: unfunded credit commitments, beginning balance $ 99,294 $ 62,664 $ 67,656 $ 55,183 Impact of adopting ASC 326 — — 22,826 — Provision for credit losses 2,019 551 11,132 8,079 Foreign currency translation adjustments 202 (107) (99) (154) Allowance for credit losses: unfunded credit commitments, ending balance (1) $ 101,515 $ 63,108 $ 101,515 $ 63,108 (1) The “allowance for credit losses: unfunded credit commitments” is included as a component of “other liabilities” on our unaudited interim consolidated balance sheets. See Note 15 — “Off-Balance Sheet Arrangements, Guarantees and Other Commitments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional disclosures related to our commitments to extend credit.

Leases

Leases	9 Months Ended
Leases	Sep. 30, 2020
Leases [Abstract]
Leases	Leases We have operating leases for our corporate offices and certain equipment utilized at those properties. We are obligated under a number of noncancelable operating leases for premises and equipment that expire at various dates, through 2030, and in most instances, include options to renew or extend at market rates and terms. Such leases may provide for periodic adjustments of rent during the term of the lease based on changes in various economic indicators. At the inception of the lease, the lease is evaluated to determine whether the lease will be accounted for as an operating or a finance lease. There were no significant assumptions or judgments required upon applying the new lease standard. Operating lease right-of-use assets and operating lease liabilities are included in our consolidated balance sheets. We have no leases that meet the definition of a finance lease under ASC 842 and our lessor accounting treatment for subleases is not material. Total recorded balances for the lease assets and liabilities are as follows: (Dollars in thousands) September 30, 2020 December 31, 2019 Assets: Right-of-use assets - operating leases $ 220,493 $ 197,365 Liabilities: Lease liabilities - operating leases 246,652 218,847 The components of our lease cost and supplemental cash flow information related to leases for the three and nine months ended September 30, 2020 and 2019 were as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Operating lease cost $ 11,998 $ 10,120 $ 35,040 $ 29,099 Short-term lease cost 333 370 1,092 1,214 Variable lease cost 830 903 2,548 2,683 Less: sublease income (346) (1,140) (1,633) (3,363) Total lease cost, net $ 12,815 $ 10,253 $ 37,047 $ 29,633 Supplemental cash flows information: Cash paid for amounts included in the measurement of lease liabilities: Cash paid for operating leases $ 12,273 $ 11,514 $ 36,753 $ 32,752 Noncash items during the period: Lease obligations in exchange for obtaining Right-of-use assets: Operating leases $ 14,741 $ 7,770 $ 55,316 $ 7,770 The table below presents additional information related to the Company's leases as of September 30, 2020 and December 31, 2019: September 30, 2020 December 31, 2019 Weighted-average remaining term (in years) - operating leases 6.13 6.29 Weighted-average discount rate - operating leases (1) 2.54 % 2.92 % (1) The incremental borrowing rate used to calculate the lease liability was determined based on the facts and circumstances of the economic environment and the Company’s credit standing as of the effective date of ASC 842. Additionally, the total lease term and total lease payments were also considered in determining the rate. Based on these considerations the Company identified credit terms available under its existing credit lines which represent a collateralized borrowing rate that has varying credit terms that could be matched to total lease terms and total lease payments in ultimately determining the implied borrowing rate in each lease contract. The following table presents our undiscounted future cash payments for our operating lease liabilities as of September 30, 2020: Years ended December 31, Operating Leases 2020 (excluding the nine months ended September 30, 2020) $ 12,782 2021 50,271 2022 45,430 2023 44,337 2024 38,437 2025 and thereafter 75,799 Total future lease payments (1) $ 267,056 Less: imputed interest (20,404) Total lease liabilities $ 246,652

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
Goodwill and Other Intangible Assets	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill Goodwill at both September 30, 2020 and December 31, 2019 was $137.8 million, which was a result of revenue generating synergies expected from our acquisition of SVB Leerink in 2019. All reported goodwill amounts have been allocated to the SVB Leerink reporting segment and are expected to be deductible for tax purposes. Refer to Note 14 — “Segment Reporting” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional information. Other Intangible Assets The components of net other intangible assets related to the acquisition of SVB Leerink were as follows: September 30, 2020 December 31, 2019 (Dollars in thousands) Gross Amount Accumulated Amortization Net Carrying Amount Gross Amount Accumulated Amortization Net Carrying Amount Other intangible assets: Customer relationships $ 42,000 $ 6,682 $ 35,318 $ 42,000 $ 3,818 $ 38,182 Other 18,900 8,838 10,062 18,900 7,665 11,235 Total other intangible assets $ 60,900 $ 15,520 $ 45,380 $ 60,900 $ 11,483 $ 49,417 For the nine months ended September 30, 2020, we recorded amortization expense of $4.0 million. Assuming no future impairments of other intangible assets or additional acquisitions or dispositions, the following table presents the Company's future expected amortization expense for other intangible assets that will continue to be amortized as of September 30, 2020: Years ended December 31, Other 2020 (excluding the nine months ended September 30, 2020) $ 1,345 2021 4,732 2022 4,732 2023 4,732 2024 4,732 2025 and thereafter 25,107 Total future amortization expense $ 45,380

Short-Term Borrowings and Long-

Short-Term Borrowings and Long-Term Debt	9 Months Ended
Short-Term Borrowings and Long-Term Debt	Sep. 30, 2020
Debt Disclosure [Abstract]
Short-Term Borrowings and Long-Term Debt	Short-Term Borrowings and Long-Term Debt The following table represents outstanding short-term borrowings and long-term debt at September 30, 2020 and December 31, 2019: Carrying Value (Dollars in thousands) Maturity Principal value at September 30, 2020 September 30, December 31, Short-term borrowings: Other short-term borrowings (1) $ 19,068 $ 19,068 17,430 Total short-term borrowings $ 19,068 $ 17,430 Long-term debt: 3.50% Senior Notes January 29, 2025 $ 350,000 $ 348,257 $ 347,987 3.125% Senior Notes June 5, 2030 500,000 495,173 — Total long-term debt $ 843,430 $ 347,987 (1) Represents cash collateral received from certain counterparties in relation to market value exposures of derivative contracts in our favor. Interest expense related to short-term borrowings and long-term debt was $7.2 million and $17.9 million for the three and nine months ended September 30, 2020 and $8.1 million and $27.6 million for the three and nine months ended September 30, 2019. The weighted average interest rate associated with our short-term borrowings was 0.08 percent as of September 30, 2020 and 1.55 percent as of as of December 31, 2019. Short-term Borrowings We have certain facilities in place to enable us to access short-term borrowings on a secured and unsecured basis. Our secured facilities include collateral pledged to the FHLB of San Francisco and the discount window at the FRB (using both fixed income securities and loans as collateral). Our unsecured facility consists of our uncommitted federal funds lines. As of September 30, 2020, collateral pledged to the FHLB of San Francisco was comprised primarily of fixed income investment securities and loans and had a carrying value of $6.6 billion, of which $5.5 billion was available to support additional borrowings. As of September 30, 2020, collateral pledged to the discount window at the FRB was comprised of fixed income investment securities and had a carrying value of $0.9 billion, all of which was unused and available to support additional borrowings. Our total unused and available borrowing capacity for our uncommitted federal funds lines totaled $1.9 billion at September 30, 2020. Our total unused and available borrowing capacity under our master repurchase agreements with various financial institutions totaled $3.3 billion at September 30, 2020. 3.125% Senior Notes

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
Derivative Financial Instruments	Sep. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments We primarily use derivative financial instruments to manage interest rate risk and currency exchange rate risk and to assist customers with their risk management objectives, which may include currency exchange rate risks and interest rate risks. Also, in connection with negotiating credit facilities and certain other services, we often obtain equity warrant assets giving us the right to acquire stock in private, venture-backed companies in the technology and life science/healthcare industries. Interest Rate Risk Interest rate risk is our primary market risk and can result from timing and volume differences in the repricing of our interest rate sensitive assets and liabilities and changes in market interest rates. To manage interest rate risk on our variable-interest rate loan portfolio, we enter into interest rate swap contracts to hedge against future changes in interest rates by using hedging instruments to lock in future cash inflows that would otherwise be impacted by movements in the market interest rates. We designate these interest rate swap contracts as cash flow hedges that qualify for hedge accounting under ASC 815, Derivatives and Hedging ( " ASC 815 " ), and record them in other assets and other liabilities. For qualifying cash flow hedges, changes in the fair value of the derivative are recorded in accumulated other comprehensive income and recognized in earnings as the hedged item affects earnings. Derivative amounts affecting earnings are recognized consistent with the classification of the hedged item in the line item "Loans" as part of interest income, a component of consolidated net income. We assess hedge effectiveness under ASC 815 on a quarterly basis to ensure all hedges remain highly effective to ensure hedge accounting under ASC 815 can be applied. If the hedging relationship no longer exists or no longer qualifies as a hedge per ASC 815, any amounts remaining as gain or loss in accumulated other comprehensive income are reclassified into earnings in the line item "Loans" as part of interest income, a component of consolidated net income. As of March 31, 2020, all derivatives previously classified as hedges with notional balances totaling $5.0 billion and a net asset fair value of $227.5 million were terminated. As of September 30, 2020, the total unrealized gains on terminated cash flow hedges remaining in AOCI is $195.0 million, $141.0 million net of tax. The unrealized gains will be reclassified into interest income as the underlying forecasted transactions impact earnings through the original maturity of the hedged forecasted transactions. The total remaining term over which the unrealized gains will be reclassified into earnings is approximately five years. Currency Exchange Risk We enter into foreign exchange forward contracts to economically reduce our foreign exchange exposure risk associated with the net difference between foreign currency denominated assets and liabilities. We do not designate any foreign exchange forward contracts as derivative instruments that qualify for hedge accounting. Gains or losses from changes in currency rates on foreign currency denominated instruments are recorded in the line item “other” as part of noninterest income, a component of consolidated net income. We may experience ineffectiveness in the economic hedging relationship, because the instruments are revalued based upon changes in the currency’s spot rate on the principal value, while the forwards are revalued on a discounted cash flow basis. We record forward agreements in gain positions in other assets and loss positions in other liabilities, while net changes in fair value are recorded in the line item “other” as part of noninterest income, a component of consolidated net income. Other Derivative Instruments Also included in our derivative instruments are equity warrant assets and client forward and option contracts, and client interest rate contracts. For further description of these other derivative instruments, refer to Note 2 — “Summary of Significant Accounting Policies" under Part II, Item 8 of our 2019 Form 10-K. Counterparty Credit Risk We are exposed to credit risk if counterparties to our derivative contracts do not perform as expected. We mitigate counterparty credit risk through credit approvals, limits, monitoring procedures and obtaining collateral, as appropriate. With respect to measuring counterparty credit risk for derivative instruments, we measure the fair value of a group of financial assets and financial liabilities on a net risk basis by counterparty portfolio. The total notional or contractual amounts and fair value of our derivative financial instruments at September 30, 2020 and December 31, 2019 were as follows: September 30, 2020 December 31, 2019 Notional or Fair Value Notional or Fair Value (Dollars in thousands) Derivative Assets (1) Derivative Liabilities (1) Derivative Assets (1) Derivative Liabilities (1) Derivatives designated as hedging instruments: Interest rate risks: Interest rate swaps $ — $ — $ — $ 1,915,000 $ 22,676 $ — Interest rate swaps — — — 3,085,000 — 25,623 Derivatives not designated as hedging instruments: Currency exchange risks: Foreign exchange forwards 462,765 4,083 — — — — Foreign exchange forwards 59,992 — 278 300,250 — 2,154 Other derivative instruments: Equity warrant assets 256,774 202,184 — 225,893 165,473 — Client foreign exchange forwards 6,955,487 138,522 — 4,661,517 114,546 — Client foreign exchange forwards 5,754,213 — 108,959 4,326,059 — 94,745 Client foreign currency options 111,107 2,986 — 154,985 1,308 — Client foreign currency options 111,107 — 2,986 154,985 — 1,308 Client interest rate derivatives 916,573 79,270 — 1,275,190 28,811 — Client interest rate derivatives (2) 1,048,715 — 25,558 1,372,914 — 14,154 Total derivatives not designated as hedging instruments 427,045 137,781 310,138 112,361 Total derivatives $ 427,045 $ 137,781 $ 332,814 $ 137,984 (1) Derivative assets and liabilities are included in "accrued interest receivable and other assets" and "other liabilities " , respectively, on our consolidated balance sheets. (2) The amount reported reflects reductions of approximately $59.2 million and $17.4 million of derivative liabilities at September 30, 2020 and December 31, 2019, respectively, reflecting variation margin treated as settlement of the related derivative fair values for legal and accounting purposes as required by central clearing houses. A summary of our derivative activity and the related impact on our consolidated statements of income for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) Statement of income location 2020 2019 2020 2019 Derivatives designated as hedging instruments: Interest rate risks: Amounts reclassified from accumulated other comprehensive income into income Interest income - loans $ 16,004 $ (2,713) $ 33,924 $ (3,224) Derivatives not designated as hedging instruments: Currency exchange risks: Gains (losses) on revaluations of internal foreign currency instruments, net Other noninterest income $ 17,085 $ (8,724) $ 20,138 $ (5,183) (Losses) gains on internal foreign exchange forward contracts, net Other noninterest income (19,344) 8,660 (20,010) 4,917 Net (losses) gains associated with internal currency risk $ (2,259) $ (64) $ 128 $ (266) Other derivative instruments: Gains (losses) on revaluations of client foreign currency instruments, net Other noninterest income $ 71 $ (2,181) $ (3,302) $ (14,793) Gains on client foreign exchange forward contracts, net Other noninterest income 1,641 2,167 2,582 15,232 Net gains (losses) associated with client currency risk $ 1,712 $ (14) $ (720) $ 439 Net gains on equity warrant assets Gains on equity warrant assets, net $ 53,766 $ 37,561 $ 93,667 $ 107,213 Net gains (losses) on other derivatives Other noninterest income $ 31,151 $ (1,123) $ 26,533 $ (2,619) Balance Sheet Offsetting Certain of our derivative and other financial instruments are subject to enforceable master netting arrangements with our counterparties. These agreements provide for the net settlement of multiple contracts with a single counterparty through a single payment, in a single currency, in the event of default on or termination of any one contract. The following table summarizes our assets subject to enforceable master netting arrangements as of September 30, 2020 and December 31, 2019: Gross Amounts of Recognized Assets Gross Amounts offset in the Statement of Financial Position Net Amounts of Assets Presented in the Statement of Financial Position Gross Amounts Not Offset in the Statement of Financial Position but Subject to Master Netting Arrangements Net Amount (Dollars in thousands) Financial Instruments Cash Collateral Received (1) September 30, 2020 Derivative assets: Interest rate swaps $ — $ — $ — $ — $ — $ — Foreign exchange forwards 142,605 — 142,605 (56,584) (19,049) 66,972 Foreign currency options 2,986 — 2,986 (2,323) (19) 644 Client interest rate derivatives 79,270 — 79,270 (79,270) — — Total derivative assets 224,861 — 224,861 (138,177) (19,068) 67,616 Reverse repurchase, securities borrowing, and similar arrangements 450,164 — 450,164 (450,164) — — Total $ 675,025 $ — $ 675,025 $ (588,341) $ (19,068) $ 67,616 December 31, 2019 Derivative assets: Interest rate swaps $ 22,676 $ — $ 22,676 $ (22,598) $ — $ 78 Foreign exchange forwards 114,546 — 114,546 (36,855) (17,095) 60,596 Foreign currency options 1,308 — 1,308 (848) (335) 125 Client interest rate derivatives 28,811 — 28,811 (28,811) — — Total derivative assets 167,341 — 167,341 (89,112) (17,430) 60,799 Reverse repurchase, securities borrowing, and similar arrangements 289,340 — 289,340 (289,340) — — Total $ 456,681 $ — $ 456,681 $ (378,452) $ (17,430) $ 60,799 (1) Cash collateral received from our counterparties in relation to market value exposures of derivative contracts in our favor is recorded as a component of “short-term borrowings” on our consolidated balance sheets. The following table summarizes our liabilities subject to enforceable master netting arrangements as of September 30, 2020 and December 31, 2019: Gross Amounts of Recognized Liabilities Gross Amounts offset in the Statement of Financial Position Net Amounts of Liabilities Presented in the Statement of Financial Position Gross Amounts Not Offset in the Statement of Financial Position but Subject to Master Netting Arrangements Net Amount (Dollars in thousands) Financial Instruments Cash Collateral Pledged (1) September 30, 2020 Derivative liabilities: Interest rate swaps $ — $ — $ — $ — $ — $ — Foreign exchange forwards 109,237 — 109,237 (49,862) (12,918) 46,457 Foreign currency options 2,986 — 2,986 (644) — 2,342 Client interest rate derivatives 25,558 — 25,558 — (24,898) 660 Total derivative liabilities 137,781 — 137,781 (50,506) (37,816) 49,459 Repurchase, securities lending, and similar arrangements — — — — — — Total $ 137,781 $ — $ 137,781 $ (50,506) $ (37,816) $ 49,459 December 31, 2019 Derivative liabilities: Interest rate swaps $ 25,623 $ — $ 25,623 $ (22,676) $ (2,947) $ — Foreign exchange forwards 96,899 — 96,899 (33,314) (22,030) 41,555 Foreign currency options 1,308 — 1,308 (531) — 777 Client interest rate derivatives 14,154 — 14,154 — (13,936) 218 Total derivative liabilities 137,984 — 137,984 (56,521) (38,913) 42,550 Repurchase, securities lending, and similar arrangements — — — — — — Total $ 137,984 $ — $ 137,984 $ (56,521) $ (38,913) $ 42,550 (1) Cash collateral pledged to our counterparties in relation to market value exposures of derivative contracts in a liability position and repurchase agreements are recorded as a component of “cash and cash equivalents " on our consolidated balance sheets.

Noninterest Income

Noninterest Income	9 Months Ended
Noninterest Income	Sep. 30, 2020
Other Income and Expenses [Abstract]
Noninterest Income	Noninterest Income All of the Company's revenue from contracts with customers within the scope of ASC 606 is recognized within noninterest income. Included below is a summary of noninterest income for the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Noninterest income: Gains on investment securities, net $ 189,837 $ 29,849 $ 270,760 $ 106,575 Gains on equity warrant assets, net 53,766 37,561 93,667 107,213 Client investment fees 31,914 46,679 107,192 136,905 Foreign exchange fees 43,881 40,309 127,642 116,863 Credit card fees 22,756 30,158 72,348 86,431 Deposit service charges 22,015 22,482 67,115 65,496 Lending related fees 13,562 11,707 37,851 36,857 Letters of credit and standby letters of credit fees 12,192 10,842 35,155 31,205 Investment banking revenue 92,181 38,516 280,551 137,005 Commissions 16,257 12,275 49,197 40,812 Other 49,222 13,631 76,887 42,773 Total noninterest income $ 547,583 $ 294,009 $ 1,218,365 $ 908,135 Gains on investment securities, net Net gains on investment securities include both gains and losses from our non-marketable and other equity securities, which include public equity securities held as a result of exercised equity warrant assets, gains and losses from sales of our AFS debt securities portfolio, when applicable, and carried interest. Our non-marketable and other equity securities portfolio primarily represents investments in venture capital and private equity funds, our China Joint Venture, debt funds, private and public portfolio companies, which include public equity securities held as a result of exercised equity warrant assets and qualified affordable housing projects. We experience variability in the performance of our non-marketable and other equity securities from period to period, which results in net gains or losses on investment securities (both realized and unrealized). This variability is due to a number of factors, including unrealized changes in the values of our investments, changes in the amount of realized gains from distributions, changes in liquidity events and general economic and market conditions. Unrealized gains from non-marketable and other equity securities for any single period are typically driven by valuation changes. The extent to which any unrealized gains or losses will become realized is subject to a variety of factors, including, among other things, the expiration of certain sales restrictions to which these equity securities may be subject to (e.g., lock-up agreements), changes in prevailing market prices, market conditions, the actual sales or distributions of securities, and the timing of such actual sales or distributions, which, to the extent such securities are managed by our managed funds, are subject to our funds' separate discretionary sales/distributions and governance processes. Carried interest is comprised of preferential allocations of profits recognizable when the return on assets of our individual managed fund of funds and direct venture funds exceeds certain performance targets and is payable to us, as the general partners of the managed funds. The carried interest we earn is often shared with employees, who are also members of the general partner entities. We record carried interest on a quarterly basis by measuring fund performance to date versus the performance target. For our unconsolidated managed funds, carried interest is recorded as gains on investment securities, net. For our consolidated managed funds, it is recorded as a component of net income attributable to noncontrolling interests. Carried interest allocated to others is recorded as a component of net income attributable to noncontrolling interests. Any carried interest paid to us (or our employees) may be subject to reversal to the extent fund performance declines to a level where inception to date carried interest is lower than actual payments made by the funds. The limited partnership agreements for our funds provide that carried interest is generally not paid to the general partners until the funds have provided a full return of contributed capital to the limited partners. Accrued, but unpaid carried interest may be subject to reversal to the extent that the fund performance declines to a level where inception-to-date carried interest is less than prior amounts recognized. Carried interest income is accounted for under an ownership model based on ASC 323 — Equity Method of Accounting and ASC 810 — Consolidation. Our available-for-sale securities portfolio is a fixed income investment portfolio that is managed with the objective of earning an appropriate portfolio yield over the long-term while maintaining sufficient liquidity and credit diversification as well as addressing our asset/liability management objectives. Though infrequent, sales of debt securities in our AFS securities portfolio may result in net gains or losses and are conducted pursuant to the guidelines of our investment policy related to the management of our liquidity position and interest rate risk. Gains on investment securities are recognized outside of the scope of ASC 606 as it explicitly excludes noninterest income earned from our investment-related activities. A summary of gains and losses on investment securities for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Gains on non-marketable and other equity securities, net $ 189,837 $ 29,849 $ 209,595 $ 110,480 Gains (losses) on sales of available-for-sale securities, net — — 61,165 (3,905) Total gains on investment securities, net $ 189,837 $ 29,849 $ 270,760 $ 106,575 Gains on equity warrant assets, net In connection with negotiating credit facilities and certain other services, we often obtain rights to acquire stock in the form of equity warrant assets in primarily private, venture-backed companies in the technology and life science/healthcare industries. Any changes in fair value from the grant date fair value of equity warrant assets will be recognized as increases or decreases to other assets on our balance sheet and as net gains or losses on equity warrant assets, in noninterest income, a component of consolidated net income. Gains on equity warrant assets are recognized outside of the scope of ASC 606 as it explicitly excludes noninterest income earned from our derivative-related activities. A summary of net gains on equity warrant assets for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Equity warrant assets: Gains on exercises, net $ 23,940 $ 30,047 $ 59,370 $ 90,357 Terminations (361) (481) (1,332) (2,931) Changes in fair value, net 30,187 7,995 35,629 19,787 Total net gains on equity warrant assets $ 53,766 $ 37,561 $ 93,667 $ 107,213 Client investment fees Client investment fees include fees earned from discretionary investment management services for substantially all clients, managing clients’ portfolios based on their investment policies, strategies and objectives and investment advisory fees. Revenue is recognized on a monthly basis upon completion of our performance obligation and consideration is typically received in the subsequent month. Included in our sweep money market fees are Rule 12(b)-1 fees, revenue sharing and customer transactional-based fees. Rule 12(b)-1 fees and revenue sharing are recognized as earned based on client funds that are invested in the period, typically monthly. Transactional based fees are earned and recognized on fixed income securities when the transaction is executed on the clients' behalf. Amounts paid to third-party service providers are predominantly expensed, such that client investment fees are recorded gross of payments made to third parties. A summary of client investment fees by instrument type for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Client investment fees by type: Sweep money market fees $ 18,155 $ 26,202 $ 60,617 $ 79,698 Asset management fees (1) 12,172 7,256 32,905 20,883 Repurchase agreement fees 1,587 13,221 13,670 36,324 Total client investment fees (2) $ 31,914 $ 46,679 $ 107,192 $ 136,905 (1) Represents fees earned from investments in third-party money market mutual funds and fixed-income securities managed by SVB Asset Management. (2) Represents fees earned on client investment funds that are maintained at third-party financial institutions and are not recorded on our balance sheet. Foreign exchange fees Foreign exchange fees represent the income differential between purchases and sales of foreign currency on behalf of our clients, primarily from spot contracts. Foreign exchange spot contract fees are recognized upon the completion of the single performance obligation, the execution of a spot trade in exchange for a fee. In line with customary business practice, the legal right transfers to the client upon execution of a foreign exchange contract on the trade date, and as such, we currently recognize our fees based on the trade date and the transactions are typically settled within two business days. Forward contract and option premium fees are recognized outside of the scope of ASC 606 as it explicitly excludes noninterest income earned from our derivative-related activities. A summary of foreign exchange fee income by instrument type for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Foreign exchange fees by instrument type: Spot contract commissions $ 38,794 $ 36,836 $ 112,821 $ 106,561 Forward contract commissions 4,613 3,371 14,004 10,144 Option premium fees 474 102 817 158 Total foreign exchange fees $ 43,881 $ 40,309 $ 127,642 $ 116,863 Credit card fees Credit card fees include interchange income from credit and debit cards and fees earned from processing transactions for merchants. Interchange income is earned after satisfying our performance obligation of providing nightly settlement services to a payment network. Costs related to rewards programs are recorded when the rewards are earned by the customer and presented as a reduction to interchange fee income. Rewards programs continue to be accounted for under ASC 310 - Receivables . Our performance obligations for merchant service fees are to transmit data and funds between the merchant and the payment network. Credit card interchange and merchant service fees are earned daily upon completion of transaction settlement services. Annual card service fees are recognized on a straight-line basis over a 12-month period and continue to be accounted for under ASC 310 - Receivables . A summary of credit card fees by instrument type for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Credit card fees by instrument type: Card interchange fees, net $ 18,168 $ 24,560 $ 55,257 $ 68,808 Merchant service fees 3,670 3,943 13,727 12,763 Card service fees 918 1,655 3,364 4,860 Total credit card fees $ 22,756 $ 30,158 $ 72,348 $ 86,431 Deposit service charges Deposit service charges include fees earned from performing cash management activities and other deposit account services. Deposit services include, but are not limited to, the following: receivables services, which include merchant services, remote capture, lockbox, electronic deposit capture, and fraud control services. Payment and cash management products and services include wire transfer and automated clearing house payment services to enable clients to transfer funds more quickly, as well as business bill pay, business credit and debit cards, account analysis, and disbursement services. Deposit service charges are recognized over the period in which the related performance obligation is provided, generally on a monthly basis, and are presented in the "Disaggregation of revenue from contracts with customers" table below. Lending related fees Unused commitment fees, minimum finance fees and unused line fees are recognized as earned on a monthly basis. Fees that qualify for syndication treatment are recognized at the completion of the syndicated loan deal for which the fees were received. Lending related fees are recognized outside of the scope of ASC 606 as it explicitly excludes noninterest income earned from our lending-related activities. A summary of lending related fees by instrument type for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Lending related fees by instrument type: Unused commitment fees $ 9,872 $ 8,339 $ 26,602 $ 25,060 Other 3,690 3,368 11,249 11,797 Total lending related fees $ 13,562 $ 11,707 $ 37,851 $ 36,857 Letters of credit and standby letters of credit fees Commercial and standby letters of credit represent conditional commitments issued by us on behalf of a client to guarantee the performance of the client to a third party when certain specified future events have occurred. Fees generated from letters of credit and standby letters of credit are deferred as a component of other liabilities and recognized in noninterest income over the commitment period using the straight-line method, based on the likelihood that the commitment being drawn down will be remote. Letters of credit and standby letters of credit fees are recognized outside of the scope of ASC 606 as it explicitly excludes noninterest income earned from our lending related activities. Investment banking revenue The Company earns investment banking revenue from clients for providing services related to securities underwriting, private placements and advisory services on strategic matters such as mergers and acquisitions. Underwriting fees are attributable to public and private offerings of equity and debt securities and are recognized at the point in time when the offering has been deemed to be completed by the lead manager of the underwriting group. Once the offering is completed, the performance obligation has been satisfied and the Company recognizes the applicable management fee as well the underwriting fee, net of consideration payable to customers. The Company recognizes private placement fees at the point in time when the private placement is completed, which is generally when the client accepts capital from the fund raise. Advisory fees from mergers and acquisitions engagements are generally recognized at the point in time when the related transaction is completed. Expenses are deferred only to the extent they are explicitly reimbursable by the client and the related revenue is recognized at a point in time. All other deal-related expenses are expensed as incurred. The Company has determined that it acts as principal in the majority of these transactions and therefore presents expenses gross within other operating expenses. A summary of investment banking revenue by instrument type for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Investment banking revenue: Underwriting fees $ 85,009 $ 31,016 $ 247,384 $ 109,371 Advisory fees 1,761 5,200 26,170 22,789 Private placements and other 5,411 2,300 6,997 4,845 Total investment banking revenue $ 92,181 $ 38,516 $ 280,551 $ 137,005 Commissions Commissions include commissions received from customers for the execution of agency-based brokerage transactions in listed and over-the-counter equities. The execution of each trade order represents a distinct performance obligation and the transaction price is fixed at the point in time or trade order execution. Trade execution is satisfied at the point in time that the customer has control of the asset and as such, fees are recorded on a trade date basis. Commissions are presented in the "Disaggregation of revenue from contracts with customers" table below. Other Other noninterest income primarily includes income from fund management fees, gains from conversion of convertible debt options and service revenue. Fund management fees are comprised of fees charged directly to our managed funds of funds and direct venture funds. Fund management fees are based upon the contractual terms of the limited partnership agreements and are generally recognized as earned over the specified contract period, which is generally equal to the life of the individual fund. Fund management fees are calculated as a percentage of committed capital and collected in advance and are received quarterly. Fund management fees for certain of our limited partnership agreements are calculated as a percentage of distributions made by the funds and revenue is recorded only at the time of a distribution event. As distribution events are not predetermined for these certain funds, management fees are considered variable and constrained under ASC 606. Gains from conversion of convertible debt options represent unrealized valuation gains on loan conversion derivative assets, and realized gains from the conversion of debt instruments, convertible into a third party’s common stock upon a triggering event such as an IPO. Gains from conversion of convertible debt options are recognized outside of the scope of ASC 606 as it explicitly excludes noninterest income earned from our derivative-related activities. Other service revenue primarily consists of dividend income on FHLB/FRB stock, correspondent bank rebate income, incentive fees related to carried interest and other fee income. We recognize revenue when our performance obligations are met and record revenues on a daily/monthly, quarterly, semi-annual or annual basis. For event driven revenue sources, we recognize revenue when: (i) persuasive evidence of an arrangement exists, (ii) we have performed the service, provided we have no other remaining obligations to the customer, (iii) the fee is fixed or determinable and (iv) collectability is probable. A summary of other noninterest income by instrument type for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Other noninterest income by instrument type: Fund management fees $ 9,669 $ 8,493 $ 26,422 $ 24,292 Net (losses) gains on revaluation of foreign currency instruments, net of foreign exchange forward contracts (1) (547) (78) (592) 173 Gains from conversion of convertible debt options 30,018 — 30,018 — Other service revenue 10,082 5,216 21,039 18,308 Total other noninterest income $ 49,222 $ 13,631 $ 76,887 $ 42,773 (1) Represents the net revaluation of client and internal foreign currency denominated financial instruments. We enter into foreign exchange forward contracts to economically reduce our foreign exchange exposure related to client and internal foreign currency denominated financial instruments. Disaggregation of revenue from contracts with customers The following tables present our revenues from contracts with customers disaggregated by revenue source and segment for the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, 2020 Global SVB Private SVB Capital (2) SVB Other Items Total Revenue from contracts with customers: Client investment fees $ 31,132 $ 782 $ — $ — $ — $ 31,914 Spot contract commissions 38,546 108 — — 140 38,794 Card interchange fees, gross 29,255 5 — — 287 29,547 Merchant service fees 3,670 — — — — 3,670 Deposit service charges 21,914 20 — — 81 22,015 Investment banking revenue — — — 92,181 — 92,181 Commissions — — — 16,257 — 16,257 Fund management fees — — 8,239 1,430 — 9,669 Performance fees — — 1,613 — — 1,613 Correspondent bank rebates 1,377 — — — — 1,377 Total revenue from contracts with customers $ 125,894 $ 915 $ 9,852 $ 109,868 $ 508 $ 247,037 Revenues outside the scope of ASC 606 (1) 21,700 1 50,528 3,783 224,534 300,546 Total noninterest income $ 147,594 $ 916 $ 60,380 $ 113,651 $ 225,042 $ 547,583 (1) Amounts are accounted for under separate guidance than ASC 606. (2) Global Commercial Bank’s, SVB Capital’s and SVB Leerink's components of noninterest income are shown net of noncontrolling interests. Noncontrolling interest is included within “Other Items." Three months ended September 30, 2019 Global SVB Private SVB Capital (2) SVB Other Items Total Revenue from contracts with customers: Client investment fees $ 46,171 $ 508 $ — $ — $ — $ 46,679 Spot contract commissions 36,644 89 — — 103 36,836 Card interchange fees, gross 34,867 — — — 181 35,048 Merchant service fees 3,943 — — — — 3,943 Deposit service charges 22,263 36 — — 183 22,482 Investment banking revenue — — — 38,516 — 38,516 Commissions — — — 12,275 — 12,275 Fund management fees — — 7,063 1,430 — 8,493 Correspondent bank rebates 1,633 — — — — 1,633 Total revenue from contracts with customers $ 145,521 $ 633 $ 7,063 $ 52,221 $ 467 $ 205,905 Revenues outside the scope of ASC 606 (1) 15,508 1 27,892 726 43,977 88,104 Total noninterest income $ 161,029 $ 634 $ 34,955 $ 52,947 $ 44,444 $ 294,009 (1) Amounts are accounted for under separate guidance than ASC 606. (2) Global Commercial Bank’s and SVB Capital’s components of noninterest income are shown net of noncontrolling interests. Noncontrolling interest is included within “Other Items." Nine months ended September 30, 2020 Global SVB Private SVB Capital (2) SVB Other Items Total Revenue from contracts with customers: Client investment fees $ 105,176 $ 2,016 $ — $ — $ — $ 107,192 Spot contract commissions 112,086 367 — — 368 112,821 Card interchange fees, gross 90,909 17 — — 1,144 92,070 Merchant service fees 13,727 — — — — 13,727 Deposit service charges 66,612 60 — — 443 67,115 Investment banking revenue — — — 280,551 — 280,551 Commissions — — — 49,197 — 49,197 Fund management fees — — 22,132 4,290 — 26,422 Performance fees — — 3,601 — — 3,601 Correspondent bank rebates 4,151 — — — — 4,151 Total revenue from contracts with customers $ 392,661 $ 2,460 $ 25,733 $ 334,038 $ 1,955 $ 756,847 Revenues outside the scope of ASC 606 (1) 55,241 26 61,015 6,107 339,129 461,518 Total noninterest income $ 447,902 $ 2,486 $ 86,748 $ 340,145 $ 341,084 $ 1,218,365 (1) Amounts are accounted for under separate guidance than ASC 606. (2) Global Commercial Bank’s, SVB Capital’s and SVB Leerink's components of noninterest income are shown net of noncontrolling interests. Noncontrolling interest is included within “Other Items." Nine months ended September 30, 2019 Global SVB Private SVB Capital (2) SVB Other Items Total Revenue from contracts with customers: Client investment fees $ 135,551 $ 1,354 $ — $ — $ — $ 136,905 Spot contract commissions 105,877 376 — — 308 106,561 Card interchange fees, gross 115,468 — — — 518 115,986 Merchant service fees 12,764 — — — — 12,764 Deposit service charges 64,806 104 — — 586 65,496 Investment banking revenue — — — 137,005 — 137,005 Commissions — — — 40,812 — 40,812 Fund management fees — — 20,050 4,242 — 24,292 Correspondent bank rebates 4,712 — — — — 4,712 Total revenue from contracts with customers $ 439,178 $ 1,834 $ 20,050 $ 182,059 $ 1,412 $ 644,533 Revenues outside the scope of ASC 606 (1) 32,314 (5) 79,810 6,005 145,478 263,602 Total noninterest income $ 471,492 $ 1,829 $ 99,860 $ 188,064 $ 146,890 $ 908,135 (1) Amounts are accounted for under separate guidance than ASC 606. (2) Global Commercial Bank’s, SVB Capital’s and SVB Leerink's components of noninterest income are shown net of noncontrolling interests. Noncontrolling interest is included within “Other Items." The timing of revenue recognition may differ from the timing of cash settlements or invoicing to customers. We record a receivable when revenue is recognized prior to invoicing, and unearned revenue when revenue is recognized subsequent to receipt of consideration. These assets and liabilities are reported on the consolidated balance sheets on a contract-by-contract basis at the end of each reporting period. During the three and nine months ended September 30, 2020 and 2019, changes in our contract assets, contract liabilities and receivables were not material. Additionally, revenues recognized during the three and nine months ended September 30, 2020 and 2019 that were included in the corresponding contract liability balance at the beginning of the periods were not material.

Other Noninterest Expense

Other Noninterest Expense	9 Months Ended
Other Noninterest Expense	Sep. 30, 2020
Other Income and Expenses [Abstract]
Other Noninterest Expense	Other Noninterest Expense A summary of other noninterest expense for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Lending and other client related processing costs $ 7,194 $ 7,502 $ 23,155 $ 21,442 Correspondent bank fees 3,581 3,657 11,400 10,970 Investment banking activities 2,835 1,864 13,633 9,918 Trade order execution costs 2,806 2,615 8,165 7,959 Data processing services 3,984 3,066 10,945 8,624 Telephone 2,342 2,466 6,458 7,629 Dues and publications 1,159 1,055 3,199 3,439 Postage and supplies 538 720 2,117 2,168 Other 13,114 11,161 38,831 32,910 Total other noninterest expense $ 37,553 $ 34,106 $ 117,903 $ 105,059

Segment Reporting

Segment Reporting	9 Months Ended
Segment Reporting	Sep. 30, 2020
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting We have four reportable segments for management reporting purposes: Global Commercial Bank, SVB Private Bank, SVB Capital and SVB Leerink. The results of our operating segments are based on our internal management reporting process. Our Global Commercial Bank and SVB Private Bank segments primary source of revenue is from net interest income, which is primarily the difference between interest earned on loans, net of funds transfer pricing (“FTP”), and interest paid on deposits, net of FTP. Accordingly, these segments are reported using net interest income, net of FTP. FTP is an internal measurement framework designed to assess the financial impact of a financial institution’s sources and uses of funds. It is the mechanism by which a funding credit is given for deposits raised, and a funding charge is made for funded loans. FTP is calculated at an instrument level based on account characteristics. We also evaluate performance based on provision for credit losses, noninterest income and noninterest expense, which are presented as components of segment operating profit or loss. In calculating each operating segment’s noninterest expense, we consider the direct costs incurred by the operating segment as well as certain allocated direct costs. As part of this review, we allocate certain corporate overhead costs to a corporate account. We do not allocate income tax expense or the provision for unfunded credit commitments (included in provision for credit losses) to our segments. Additionally, our management reporting model is predicated on average asset balances; therefore, period-end asset balances are not presented for segment reporting purposes. Changes in an individual client’s primary relationship designation have resulted, and in the future may result, in the inclusion of certain clients in different segments in different periods. Unlike financial reporting, which benefits from the comprehensive structure provided by GAAP, our internal management reporting process is highly subjective, as there is no comprehensive, authoritative guidance for management reporting. Our management reporting process measures the performance of our operating segments based on our internal operating structure, which is subject to change from time to time, and is not necessarily comparable with similar information for other financial services companies. For reporting purposes, SVB Financial Group has four operating segments for which we report our financial information: • Global Commercial Bank is comprised of results from the following: ◦ Our Commercial Bank products and services are provided by the Bank and its subsidiaries to commercial clients in key innovation markets. The Bank provides solutions to the financial needs of commercial clients through credit, treasury management, foreign exchange, trade finance, and other services. In addition, the Bank and its subsidiaries offer a variety of investment services and solutions to its clients that enable them to effectively manage their assets. ◦ Our Global Fund Banking (formerly Private Equity) Division provides banking products and services primarily to our private equity and venture capital clients. ◦ SVB Wine provides banking products and services to our premium wine industry clients, including vineyard development loans. ◦ Debt Fund Investments is comprised of our investments in certain debt funds in which we are a strategic investor. • SVB Private Bank is the private banking division of the Bank, which provides a range of personal financial solutions for consumers. Our clients are primarily private equity/venture capital professionals and executive leaders of the innovation companies they support. We offer a customized suite of private banking services, including mortgages, home equity lines of credit, restricted and private stock loans, capital call lines of credit and other secured and unsecured lending products, as well as cash and wealth management services. In addition, we provide real estate secured loans to eligible employees through our Employee Home Ownership Program. • SVB Capital is the funds management business of SVB Financial Group, which focuses primarily on venture capital investments. SVB Capital manages funds (primarily venture capital funds) on behalf of third-party limited partners and, on a more limited basis, SVB Financial Group. The SVB Capital family of funds is comprised of direct venture funds that invest in companies and funds of funds that invest in other venture capital funds. SVB Capital generates income for the Company primarily from investment returns (including carried interest allocations) and management fees. • SVB Leerink is an investment bank specializing in the equity and convertible capital markets, mergers and acquisitions, equity research and sales and trading for growth and innovation-minded healthcare and life science companies and operates as a wholly-owned subsidiary of SVB Financial. SVB Leerink provides investment banking services across all subsectors of healthcare including: biotechnology, pharmaceuticals, medical devices, diagnostic and life science tools, healthcare services and digital health. SVB Leerink focuses on two primary lines of business: (i) investment banking focused on providing companies with capital-raising services, financial advice on mergers and acquisitions, sales and trading services and equity research, and (ii) sponsorship of private investment funds. The summary financial results of our operating segments are presented along with a reconciliation to our consolidated interim results. Our segment information for the three and nine months ended September 30, 2020 and 2019 is as follows: (Dollars in thousands) Global SVB Private SVB Capital (1) SVB Other Items (2) Total Three months ended September 30, 2020 Net interest income (loss) $ 512,963 $ 19,145 $ 2 $ 175 $ (4,545) $ 527,740 Reduction (provision for) credit losses 37,847 14,881 — — (710) 52,018 Noninterest income 147,594 916 60,380 113,651 225,042 547,583 Noninterest expense (3) (258,035) (12,293) (11,198) (77,567) (131,928) (491,021) Income before income tax expense (4) $ 440,369 $ 22,649 $ 49,184 $ 36,259 $ 87,859 $ 636,320 Total average loans, amortized cost $ 30,763,715 $ 4,263,324 $ — $ — $ 2,291,561 $ 37,318,600 Total average assets (5) (6) 77,802,730 4,297,011 413,882 605,263 5,229,480 88,348,366 Total average deposits 74,825,725 2,163,903 — — 690,388 77,680,016 Three months ended September 30, 2019 Net interest income $ 455,161 $ 12,772 $ 9 $ 277 $ 52,425 $ 520,644 Provision for credit losses (34,075) (1,910) — — (551) (36,536) Noninterest income 161,029 634 34,955 52,947 44,444 294,009 Noninterest expense (3) (213,786) (11,638) (8,129) (55,200) (102,571) (391,324) Income (loss) before income tax expense (4) $ 368,329 $ (142) $ 26,835 $ (1,976) $ (6,253) $ 386,793 Total average loans, amortized cost $ 25,839,647 $ 3,400,889 $ — $ — $ 581,890 $ 29,822,426 Total average assets (5) (6) (8) 58,384,473 3,431,313 396,031 428,848 2,687,083 65,327,748 Total average deposits 55,250,154 1,497,303 — — 487,512 57,234,969 Nine months ended September 30, 2020 Net interest income $ 1,461,768 $ 52,952 $ 28 $ 373 $ 49,683 $ 1,564,804 Provision for credit losses (200,020) (44,194) — — (13,729) (257,943) Noninterest income 447,902 2,486 86,748 340,145 341,084 1,218,365 Noninterest expense (3) (724,233) (32,547) (28,040) (248,254) (337,168) (1,370,242) Income (loss) before income tax expense (4) $ 985,417 $ (21,303) $ 58,736 $ 92,264 $ 39,870 $ 1,154,984 Total average loans, net of unearned income $ 30,126,870 $ 4,053,018 $ — $ — $ 1,656,039 $ 35,835,927 Total average assets (5) (6) 69,212,733 4,087,786 430,391 514,836 5,514,904 79,760,650 Total average deposits 66,408,359 2,069,196 — — 688,509 69,166,064 Nine months ended September 30, 2019 Net interest income $ 1,360,997 $ 37,200 $ 20 $ 961 $ 163,755 $ 1,562,933 Provision for credit losses (79,175) (1,779) — — (8,079) (89,033) Noninterest income 471,492 1,829 99,860 188,064 146,890 908,135 Noninterest expense (3) (617,933) (30,015) (21,794) (177,675) (293,093) (1,140,510) Income before income tax expense (4) $ 1,135,381 $ 7,235 $ 78,086 $ 11,350 $ 9,473 $ 1,241,525 Total average loans, net of unearned income $ 25,457,997 $ 3,235,943 $ — $ — $ 517,020 $ 29,210,960 Total average assets (5) (6) 54,196,976 3,264,071 382,707 380,290 2,990,088 61,214,132 Total average deposits 51,352,644 1,461,170 — — 517,530 53,331,344 (1) Global Commercial Bank’s, SVB Capital’s and SVB Leerink's components of net interest income, noninterest income, noninterest expense and total average assets are shown net of noncontrolling interests for all periods presented. Noncontrolling interest is included within “Other Items." (2) The “Other Items” column reflects the adjustments necessary to reconcile the results of the operating segments to the consolidated financial statements prepared in conformity with GAAP. Net interest income consists primarily of interest earned from our fixed income investment portfolio, net of FTP. Noninterest income consists primarily of gains or losses on equity warrant assets, gains or losses on the sale of AFS securities and gains or losses on equity securities from exercised warrant assets. Noninterest expense consists primarily of expenses associated with corporate support functions such as finance, human resources, marketing, legal and other expenses. (3) The Global Commercial Bank segment includes direct depreciation and amortization of $6.4 million and $5.1 million for the three months ended September 30, 2020 and 2019, respectively, and $17.7 million and $14.8 million for the nine months ended September 30, 2020 and 2019. (4) The internal reporting model used by management to assess segment performance does not calculate income tax expense by segment. Our effective tax rate is a reasonable approximation of the segment rates. (5) Total average assets equal the greater of total average assets or the sum of total average liabilities and total average stockholders' equity for each segment to reconcile the results to the consolidated financial statements prepared in conformity with GAAP.

Off-Balance Sheet Arrangements,

Off-Balance Sheet Arrangements, Guarantees and Other Commitments	9 Months Ended
	Sep. 30, 2020
Disclosure Off Balance Sheet Arrangements Guarantees And Other Commitments Additional Information [Abstract]
Off-Balance Sheet Arrangements, Guarantees and Other Commitments	Off-Balance Sheet Arrangements, Guarantees and Other Commitments In the normal course of business, we use financial instruments with off-balance sheet risk to meet the financing needs of our customers. These financial instruments include commitments to extend credit, commercial and standby letters of credit and commitments to invest in venture capital and private equity fund investments. These instruments involve, to varying degrees, elements of credit risk. Credit risk is defined as the possibility of sustaining a loss because other parties to the financial instrument fail to perform in accordance with the terms of the contract. Commitments to Extend Credit The following table summarizes information related to our commitments to extend credit at September 30, 2020 and December 31, 2019: (Dollars in thousands) September 30, 2020 December 31, 2019 Loan commitments available for funding: (1) Fixed interest rate commitments $ 2,474,804 $ 2,434,042 Variable interest rate commitments 24,796,923 19,309,317 Total loan commitments available for funding 27,271,727 21,743,359 Commercial and standby letters of credit (2) 3,058,069 2,778,561 Total unfunded credit commitments $ 30,329,796 $ 24,521,920 Commitments unavailable for funding (3) $ 2,519,517 $ 3,051,075 Allowance for unfunded credit commitments (4) 101,515 67,656 (1) Represents commitments which are available for funding, due to clients meeting all collateral, compliance and financial covenants required under loan commitment agreements. (2) See below for additional information on our commercial and standby letters of credit. (3) Represents commitments which are currently unavailable for funding due to clients failing to meet all collateral, compliance and financial covenants under loan commitment agreements. (4) Our allowance for credit losses for unfunded credit commitments includes an allowance for both our unfunded loan commitments and our letters of credit. Commercial and Standby Letters of Credit The table below summarizes our commercial and standby letters of credit at September 30, 2020. The maximum potential amount of future payments represents the amount that could be remitted under letters of credit if there were a total default by the guaranteed parties, without consideration of possible recoveries under recourse provisions or from the collateral held or pledged. (Dollars in thousands) Expires in One Expires After Total Amount Maximum Amount Financial standby letters of credit $ 2,838,280 $ 90,452 $ 2,928,732 $ 2,928,732 Performance standby letters of credit 109,224 18,057 127,281 127,281 Commercial letters of credit 2,056 — 2,056 2,056 Total $ 2,949,560 $ 108,509 $ 3,058,069 $ 3,058,069 Deferred fees related to financial and performance standby letters of credit were $16.5 million at September 30, 2020 and $17.2 million at December 31, 2019. At September 30, 2020, collateral in the form of cash of $1.7 billion was available to us to reimburse losses, if any, under financial and performance standby letters of credit. Commitments to Invest in Venture Capital and Private Equity Funds We make commitments to invest in venture capital and private equity funds, which generally make investments in privately-held companies. Commitments to invest in these funds are generally made for a 10-year period from the inception of the fund. Although the limited partnership agreements governing these investments typically do not restrict the general partners from calling 100% of committed capital in one year, it is customary for these funds to call most of the capital commitments over 5 to 7 years, and in certain cases, the funds may not call 100% of committed capital. The actual timing of future cash requirements to fund these commitments is generally dependent upon the investment cycle, overall market conditions, and the nature and type of industry in which the privately held companies operate. The following table details our total capital commitments, unfunded capital commitments, and our ownership percentage in each fund at September 30, 2020: (Dollars in thousands) SVBFG Capital Commitments SVBFG Unfunded SVBFG Ownership CP I, LP $ 6,000 $ 270 10.7 % CP II, LP (1) 1,200 162 5.1 Capital Preferred Return Fund, LP 12,688 — 20.0 Growth Partners, LP 24,670 1,340 33.0 Strategic Investors Fund, LP 15,300 688 12.6 Strategic Investors Fund II, LP 15,000 1,050 8.6 Strategic Investors Fund III, LP 15,000 1,275 5.9 Strategic Investors Fund IV, LP 12,239 2,325 5.0 Strategic Investors Fund V funds 515 131 Various Other venture capital and private equity fund investments (equity method accounting) 25,197 6,258 Various Debt funds (equity method accounting) 58,733 240 Various Other fund investments (2) 278,339 5,614 Various Total $ 464,881 $ 19,353 (1) Our ownership includes direct ownership of 1.3 percent and indirect ownership interest of 3.8 percent through our investment in Strategic Investors Fund II, LP. (2) Represents commitments to 185 funds (primarily venture capital funds) where our ownership interest is generally less than five percent of the voting interests of each such fund. (3) We are subject to the Volcker Rule, which restricts investments in “covered funds”. Under revised regulations that became effective on October 1, 2020, venture capital and credit funds that meet certain criteria will no longer be considered covered funds. We believe that, as a result of these changes, we will not be required to sell or otherwise conform certain of our fund investments. See the “Volcker Rule” section under Part I, Item 2 of this report for additional details. The following table details the amounts of remaining unfunded commitments to venture capital and private equity funds by our consolidated managed funds of funds (including our interest and the noncontrolling interests) at September 30, 2020: (Dollars in thousands) Unfunded Commitments Strategic Investors Fund, LP $ 376 Capital Preferred Return Fund, LP 1,517 Growth Partners, LP 2,513 Total $ 4,406

Income Taxes

Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We are subject to income tax and non-income based taxes by the U.S. federal tax authorities as well as various state and foreign tax authorities. We have identified the U.S. federal and California state jurisdictions as major tax filings. All U.S. federal and California state tax returns remain open to full examination for 2016 and subsequent tax years. At September 30, 2020, our unrecognized tax benefit was $15.0 million, the recognition of which would reduce our income tax expense by $11.8 million. We do not expect that our unrecognized tax benefit will materially change in the next 12 months. We recognize interest and penalties related to income tax matters as part of income before income taxes. Interest and penalties were not material for the three and nine months ended September 30, 2020.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
Fair Value of Financial Instruments	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments Fair Value Measurements Our available-for-sale securities, derivative instruments and certain non-marketable and other equity securities are financial instruments recorded at fair value on a recurring basis. We make estimates regarding valuation of assets and liabilities measured at fair value in preparing our interim consolidated financial statements. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (the “exit price”) in an orderly transaction between market participants at the measurement date. There is a three-level hierarchy for disclosure of assets and liabilities recorded at fair value. The classification of assets and liabilities within the hierarchy is based on whether the inputs to the valuation methodology used for measurement are observable or unobservable and on the significance of those inputs in the fair value measurement. Observable inputs reflect market-derived or market-based information obtained from independent sources, while unobservable inputs reflect our estimates about market data and views of market participants. The three levels for measuring fair value are based on the reliability of inputs and are as follows: Level 1 Fair value measurements based on quoted prices in active markets for identical assets or liabilities that we have the ability to access. Since valuations are based on quoted prices that are readily and regularly available in an active market, valuation of these instruments does not entail a significant degree of judgment. Assets utilizing Level 1 inputs include U.S. Treasury securities, foreign government debt securities, exchange-traded equity securities and certain marketable securities accounted for under fair value accounting. Level 2 Fair value measurements based on quoted prices in markets that are not active or for which all significant inputs are observable, directly or indirectly. Valuations for the available-for-sale securities are provided by independent pricing service providers who have experience in valuing these securities and by comparison to and/or average of quoted market prices obtained from independent brokers. We perform a monthly analysis on the values received from third parties to ensure that the prices represent a reasonable estimate of the fair value. The procedures include, but are not limited to, initial and ongoing review of third-party pricing methodologies, review of pricing trends and monitoring of trading volumes. Additional corroboration, such as obtaining a non-binding price from a broker, may be obtained depending on the frequency of trades of the security and the level of liquidity or depth of the market. We ensure prices received from independent brokers represent a reasonable estimate of the fair value through the use of observable market inputs including comparable trades, yield curve, spreads and, when available, market indices. As a result of this analysis, if the Company determines that there is a more appropriate fair value based upon the available market data, the price received from the third party is adjusted accordingly. Below is a summary of the significant inputs used for each class of Level 2 assets and liabilities: U.S. agency debentures: Fair value measurements of U.S. agency debentures are based on the characteristics specific to bonds held, such as issuer name, issuance date, coupon rate, maturity date and any applicable issuer call option features. Valuations are based on market spreads relative to similar term benchmark market interest rates, generally U.S. Treasury securities. Agency-issued mortgage-backed securities: Agency-issued mortgage-backed securities are pools of individual conventional mortgage loans underwritten to U.S. agency standards with similar coupon rates, tenor, and other attributes such as geographic location, loan size and origination vintage. Fair value measurements of these securities are based on observable price adjustments relative to benchmark market interest rates taking into consideration estimated loan prepayment speeds. Agency-issued collateralized mortgage obligations: Agency-issued collateralized mortgage obligations are structured into classes or tranches with defined cash flow characteristics and are collateralized by U.S. agency-issued mortgage pass-through securities. Fair value measurements of these securities incorporate similar characteristics of mortgage pass-through securities such as coupon rate, tenor, geographic location, loan size and origination vintage, in addition to incorporating the effect of estimated prepayment speeds on the cash flow structure of the class or tranche. These measurements incorporate observable market spreads over an estimated average life after considering the inputs listed above. Agency-issued commercial mortgage-backed securities: Fair value measurements of these securities are based on spreads to benchmark market interest rates (usually U.S. Treasury rates or rates observable in the swaps market), prepayment speeds, loan default rate assumptions and loan loss severity assumptions on underlying loans. Foreign exchange forward and option contract assets and liabilities: Fair value measurements of these assets and liabilities are priced based on spot and forward foreign currency rates and option volatility assumptions. Interest rate derivative and interest rate swap assets and liabilities: Fair value measurements of interest rate derivatives and interest rate swaps are priced considering the coupon rate of the fixed leg of the contract and the variable coupon rate on the floating leg of the contract. Valuation is based on both spot and forward rates on the swap yield curve and the credit worthiness of the contract counterparty. Other equity securities: Fair value measurements of equity securities of public companies are priced based on quoted market prices less a discount if the securities are subject to certain sales restrictions. Certain sales restriction discounts generally range from 10 percent to 20 percent depending on the duration of the sale restrictions which typically range from three Equity warrant assets (public portfolio): Fair value measurements of equity warrant assets of publicly-traded portfolio companies are valued based on the Black-Scholes option pricing model. The model uses the price of publicly-traded companies (underlying stock price), stated strike prices, warrant expiration dates, the risk-free interest rate and market-observable option volatility assumptions. Level 3 The fair value measurement is derived from valuation techniques that use significant assumptions not observable in the market. These unobservable assumptions reflect our own estimates of assumptions we believe market participants would use in pricing the asset. The valuation techniques are consistent with the market approach, income approach and/or the cost approach used to measure fair value. Below is a summary of the valuation techniques used for each class of Level 3 assets: Venture capital and private equity fund investments not measured at net asset value: Fair value measurements are based on consideration of a range of factors including, but not limited to, the price at which the investment was acquired, the term and nature of the investment, local market conditions, values for comparable securities, and as it relates to the private company, the current and projected operating performance, exit strategies and financing transactions subsequent to the acquisition of the investment. The significant unobservable inputs used in the fair value measurement include the information about each portfolio company, including actual and forecasted results, cash position, recent or planned transactions and market comparable companies. Significant changes to any one of these inputs in isolation could result in a significant change in the fair value measurement; however, we generally consider all factors available through ongoing communication with the portfolio companies and venture capital fund managers to determine whether there are changes to the portfolio company or the environment that indicate a change in the fair value measurement. Equity warrant assets (public portfolio): Fair value measurements of equity warrant assets of publicly-traded portfolio companies are valued based on the Black-Scholes option pricing model. The model uses the price of publicly-traded companies (underlying stock price), stated strike prices, warrant expiration dates, the risk-free interest rate and market-observable option volatility assumptions. Modeled asset values are further adjusted by applying a discount of up to 20 percent for certain warrants that have certain sales restrictions or other features that indicate a discount to fair value is warranted. As sale restrictions are lifted, discounts are adjusted downward to zero once all restrictions expire or are removed. Equity warrant assets (private portfolio): Fair value measurements of equity warrant assets of private portfolio companies are priced based on a Black-Scholes option pricing model to estimate the asset value by using stated strike prices, option expiration dates, risk-free interest rates and option volatility assumptions. Option volatility assumptions used in the Black-Scholes model are based on public market indices whose members operate in similar industries as companies in our private company portfolio. Option expiration dates are modified to account for estimates to actual life relative to stated expiration. Overall model asset values are further adjusted for a general lack of liquidity due to the private nature of the associated underlying company. There is a direct correlation between changes in the volatility and remaining life assumptions in isolation and the fair value measurement while there is an inverse correlation between changes in the liquidity discount assumption and the fair value measurement. The following fair value hierarchy table presents information about our assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2020: (Dollars in thousands) Level 1 Level 2 Level 3 Balance at September 30, 2020 Assets: Available-for-sale securities: U.S. Treasury securities $ 4,547,294 $ — $ — $ 4,547,294 U.S. agency debentures — 152,526 — 152,526 Foreign government debt securities 23,449 — — 23,449 Residential mortgage-backed securities: Agency-issued mortgage-backed securities — 9,770,313 — 9,770,313 Agency-issued collateralized mortgage obligations — fixed rate — 7,315,973 — 7,315,973 Agency-issued commercial mortgage-backed securities — 4,094,769 — 4,094,769 Total available-for-sale securities 4,570,743 21,333,581 — 25,904,324 Non-marketable and other equity securities (fair value accounting): Non-marketable securities: Venture capital and private equity fund investments measured at net asset value — — — 226,526 Venture capital and private equity fund investments not measured at net asset value (1) — — 134 134 Other equity securities in public companies 26,205 203,092 — 229,297 Total non-marketable and other equity securities (fair value accounting) 26,205 203,092 134 455,957 Other assets: Foreign exchange forward and option contracts — 145,591 — 145,591 Equity warrant assets — 9,501 192,683 202,184 Client interest rate derivatives — 79,270 — 79,270 Total assets $ 4,596,948 $ 21,771,035 $ 192,817 $ 26,787,326 Liabilities: Foreign exchange forward and option contracts $ — $ 112,223 $ — $ 112,223 Client interest rate derivatives — 25,558 — 25,558 Total liabilities $ — $ 137,781 $ — $ 137,781 (1) Included in Level 3 assets is $120 thousand attributable to noncontrolling interests calculated based on the ownership percentages of the noncontrolling interests. The following fair value hierarchy table presents information about our assets and liabilities that are measured at fair value on a recurring basis as of December 31, 2019: (Dollars in thousands) Level 1 Level 2 Level 3 Balance at December 31, 2019 Assets: Available-for-sale securities: U.S. Treasury securities $ 6,894,010 $ — $ — $ 6,894,010 U.S. agency debentures — 99,547 — 99,547 Foreign government debt securities 9,038 — — 9,038 Residential mortgage-backed securities: Agency-issued mortgage-backed securities — 4,148,791 — 4,148,791 Agency-issued collateralized mortgage obligations—fixed rate — 1,538,343 — 1,538,343 Agency-issued commercial mortgage-backed securities — 1,325,190 — 1,325,190 Total available-for-sale securities 6,903,048 7,111,871 — 14,014,919 Non-marketable and other equity securities (fair value accounting): Non-marketable securities: Venture capital and private equity fund investments measured at net asset value — — — 265,263 Venture capital and private equity fund investments not measured at net asset value (1) — — 134 134 Other equity securities in public companies 17,290 41,910 — 59,200 Total non-marketable and other equity securities (fair value accounting) 17,290 41,910 134 324,597 Other assets: Foreign exchange forward and option contracts — 115,854 — 115,854 Equity warrant assets — 4,435 161,038 165,473 Interest rate swaps — 22,676 — 22,676 Client interest rate derivatives — 28,811 — 28,811 Total assets $ 6,920,338 $ 7,325,557 $ 161,172 $ 14,672,330 Liabilities: Foreign exchange forward and option contracts $ — $ 98,207 $ — $ 98,207 Interest rate swaps — 25,623 — 25,623 Client interest rate derivatives — 14,154 — 14,154 Total liabilities $ — $ 137,984 $ — $ 137,984 (1) Included in Level 3 assets is $120 thousand attributable to noncontrolling interests calculated based on the ownership percentages of the noncontrolling interests. The following table presents additional information about Level 3 assets measured at fair value on a recurring basis for the three and nine months ended September 30, 2020 and 2019: (Dollars in thousands) Beginning Balance Total Net Gains Included in Purchases Sales/Exits Issuances Distributions and Other Settlements Transfers Out of Level 3 Ending Balance Three months ended September 30, 2020 Non-marketable and other equity securities (fair value accounting): Venture capital and private equity fund investments not measured at net asset value (1) $ 134 $ — $ — $ — $ — $ — $ — $ 134 Other assets: Equity warrant assets (2) 165,225 52,537 — (28,760) 4,605 — (924) 192,683 Total assets $ 165,359 $ 52,537 $ — $ (28,760) $ 4,605 $ — $ (924) $ 192,817 Three months ended September 30, 2019 Non-marketable and other equity securities (fair value accounting): Venture capital and private equity fund investments not measured at net asset value (1) $ 441 $ 57 $ — $ (364) $ — $ — $ — $ 134 Other assets: Equity warrant assets (2) 147,770 39,527 — (45,270) 4,130 — (1,116) 145,041 Total assets $ 148,211 $ 39,584 $ — $ (45,634) $ 4,130 $ — $ (1,116) $ 145,175 Nine months ended September 30, 2020 Non-marketable and other equity securities (fair value accounting): Venture capital and private equity fund investments not measured at net asset value (1) $ 134 $ 5 $ — $ (5) $ — $ — $ — $ 134 Other assets: Equity warrant assets (2) 161,038 91,224 — (74,110) 15,894 — (1,363) 192,683 Total assets $ 161,172 $ 91,229 $ — $ (74,115) $ 15,894 $ — $ (1,363) $ 192,817 Nine months ended September 30, 2019 Non-marketable and other equity securities (fair value accounting): Venture capital and private equity fund investments not measured at net asset value (1) $ 1,079 $ 12 $ — $ (960) $ — $ 3 $ — $ 134 Other assets: Equity warrant assets (2) 145,199 105,338 575 (113,143) 11,714 — (4,642) 145,041 Total assets $ 146,278 $ 105,350 $ 575 $ (114,103) $ 11,714 $ 3 $ (4,642) $ 145,175 (1) Realized and unrealized gains (losses) are recorded in the line item “Gains on investment securities, net," a component of noninterest income. (2) Realized and unrealized gains (losses) are recorded in the line item “Gains on equity warrant assets, net," a component of noninterest income. The following table presents the amount of net unrealized gains and losses included in earnings (which is inclusive of noncontrolling interest) attributable to Level 3 assets still held at September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Non-marketable and other equity securities (fair value accounting): Venture capital and private equity fund investments not measured at net asset value (1) $ — $ 57 $ — $ 12 Other assets: Equity warrant assets (2) 26,360 (727) 33,469 21,041 Total unrealized gains (losses) , net $ 26,360 $ (670) $ 33,469 $ 21,053 Unrealized losses attributable to noncontrolling interests (1) $ — $ (158) $ — $ (199) (1) Unrealized gains (losses) are recorded in the line item “Gains on investment securities, net, " a component of noninterest income. (2) Unrealized gains (losses) are recorded in the line item “Gains on equity warrant assets, net, " a component of noninterest income. The extent to which any unrealized gains or losses will become realized is subject to a variety of factors, including, among other things, the expiration of current sales restrictions to which these securities are subject, the actual sales of securities and the timing of such actual sales. The following table presents quantitative information about the significant unobservable inputs used for certain of our Level 3 fair value measurements at September 30, 2020 and December 31, 2019. We have not included in this table our venture capital and private equity fund investments (fair value accounting) as we use net asset value per share (as obtained from the general partners of the investments) as a practical expedient to determine fair value. (Dollars in thousands) Fair value Valuation Technique Significant Unobservable Inputs Input Range Weighted September 30, 2020: Venture capital and private equity fund investments (fair value accounting) $ 134 Private company equity pricing (1) (1) (1) Equity warrant assets (public portfolio) 1,166 Black-Scholes option pricing model Volatility 45.1% - 56.8% 51.9 % Risk-Free interest rate 0.3- 0.7 0.6 Sales restrictions discount (2) 10.0 - 20.0 15.9 Equity warrant assets (private portfolio) 191,517 Black-Scholes option pricing model Volatility 23.9 - 56.8 43.6 Risk-Free interest rate 0.01 - 0.69 0.2 Marketability discount (3) 22.1 22.1 Remaining life assumption (4) 45.0 45.0 December 31, 2019: Venture capital and private equity fund investments (fair value accounting) $ 134 Private company equity pricing (1) (1) (1) Equity warrant assets (public portfolio) 346 Black-Scholes option pricing model Volatility 39.2% - 54.8% 50.7 % Risk-Free interest rate 1.9 1.9 Sales restrictions discount (2) 10.0 - 20.0 13.6 Equity warrant assets (private portfolio) 160,692 Black-Scholes option pricing model Volatility 23.6 - 54.8 38.2 Risk-Free interest rate 0.5 - 1.9 1.6 Marketability discount (3) 17.5 17.5 Remaining life assumption (4) 45.0 45.0 (1) In determining the fair value of our venture capital and private equity fund investment portfolio (not measured at net asset value), we evaluate a variety of factors related to each underlying private portfolio company including, but not limited to, actual and forecasted results, cash position, recent or planned transactions and market comparable companies. Additionally, we have ongoing communication with the portfolio companies and venture capital fund managers, to determine whether there is a material change in fair value. We use company provided valuation reports, if available, to support our valuation assumptions. These factors are specific to each portfolio company and a weighted average or range of values of the unobservable inputs is not meaningful. (2) We adjust quoted market prices of public companies, which are subject to certain sales restrictions. Sales restriction discounts generally range from 10 percent to 20 percent depending on the duration of the sales restrictions, which typically range from three (3) Our marketability discount is applied to all private company warrants to account for a general lack of liquidity due to the private nature of the associated underlying company. The quantitative measure used is based upon various option-pricing models. On a quarterly basis, a sensitivity analysis is performed on our marketability discount. (4) We adjust the contractual remaining term of private company warrants based on our estimate of the actual remaining life, which we determine by utilizing historical data on terminations and exercises. At September 30, 2020, the weighted average contractual remaining term was 6.2 years, compared to our estimated remaining life of 2.8 years. On a quarterly basis, a sensitivity analysis is performed on our remaining life assumption. For the three and nine months ended September 30, 2020 and 2019, we did not have any transfers between Level 3 and Level 1. All transfers from Level 3 to Level 2 for the three and nine months ended September 30, 2020 and 2019 were due to the transfer of equity warrant assets from our private portfolio to our public portfolio (see our Level 3 reconciliation above). Financial Instruments not Carried at Fair Value FASB guidance over financial instruments requires that we disclose estimated fair values for our financial instruments not carried at fair value. The following fair value hierarchy table presents the estimated fair values of our financial instruments that are not carried at fair value at September 30, 2020 and December 31, 2019: Estimated Fair Value (Dollars in thousands) Carrying Amount Total Level 1 Level 2 Level 3 September 30, 2020: Financial assets: Cash and cash equivalents $ 15,687,776 $ 15,687,776 $ 15,687,776 $ — $ — Held-to-maturity securities 12,982,223 13,612,463 — 13,612,463 — Non-marketable securities not measured at net asset value 228,564 228,564 — — 228,564 Non-marketable securities measured at net asset value 293,269 293,269 — — — Net commercial loans 33,552,513 34,091,696 — — 34,091,696 Net consumer loans 4,348,420 4,418,614 — — 4,418,614 FHLB and Federal Reserve Bank stock 61,232 61,232 — — 61,232 Financial liabilities: Short-term borrowings 19,068 19,068 — 19,068 — Non-maturity deposits (1) 84,438,332 84,438,332 84,438,332 — — Time deposits 334,687 273,785 — 273,785 — 3.50% Senior Notes 348,257 378,606 — 378,606 — 3.125% Senior Notes 495,173 557,495 — 557,495 — Off-balance sheet financial assets: Commitments to extend credit — 34,126 — — 34,126 December 31, 2019: Financial assets: Cash and cash equivalents $ 6,781,783 $ 6,781,783 $ 6,781,783 $ — $ — Held-to-maturity securities 13,842,946 14,115,272 — 14,115,272 — Non-marketable securities not measured at net asset value 195,405 195,405 — — 195,405 Non-marketable securities measured at net asset value 235,351 235,351 — — — Net commercial loans 29,104,532 29,615,176 — — 29,615,176 Net consumer loans 3,755,180 3,820,804 — — 3,820,804 FHLB and Federal Reserve Bank stock 60,258 60,258 — — 60,258 Financial liabilities: Short-term borrowings 17,430 17,430 — 17,430 — Non-maturity deposits (1) 61,569,714 61,569,714 61,569,714 — — Time deposits 188,093 187,980 — 187,980 — 3.50% Senior Notes 347,987 366,856 — 366,856 — Off-balance sheet financial assets: Commitments to extend credit — 27,197 — — 27,197 (1) Includes noninterest-bearing demand deposits, interest-bearing checking accounts, money market accounts and interest-bearing sweep deposits. Investments in Entities that Calculate Net Asset Value Per Share FASB guidance over certain fund investments requires that we disclose the fair value of funds, significant investment strategies of the investees, redemption features of the investees, restrictions on the ability to sell investments, estimate of the period of time over which the underlying assets are expected to be liquidated by the investee, and unfunded commitments related to the investments. Our investments in debt funds and venture capital and private equity fund investments generally cannot be redeemed. Alternatively, we expect distributions, if any, to be received primarily through IPO and M&A activity of the underlying assets of the fund. Subject to applicable requirements under the Volcker Rule, we do not have any plans to sell any of these fund investments. If we decide to sell these investments in the future, the investee fund’s management must approve of the buyer before the sale of the investments can be completed. The fair values of the fund investments have been estimated using the net asset value per share of the investments, adjusted for any differences between our measurement date and the date of the fund investment’s net asset value by using the most recently available financial information from the investee general partner, for example June 30 th for our September 30 th consolidated financial statements, adjusted for any contributions paid, distributions received from the investment, and significant fund transactions or market events during the reporting period. The following table is a summary of the estimated fair values of these investments and remaining unfunded commitments for each major category of these investments as of September 30, 2020: (Dollars in thousands) Carrying Amount Fair Value Unfunded Commitments Non-marketable securities (fair value accounting): Venture capital and private equity fund investments (1) $ 226,524 $ 226,524 $ 9,133 Non-marketable securities (equity method accounting): Venture capital and private equity fund investments (2) 274,721 274,721 11,201 Debt funds (2) 6,918 6,918 240 Other investments (2) 11,629 11,629 886 Total $ 519,792 $ 519,792 $ 21,460 (1) Venture capital and private equity fund investments within non-marketable securities (fair value accounting) include investments made by our managed funds of funds and one of our direct venture funds (consolidated VIEs) and investments in venture capital and private equity fund investments (unconsolidated VIEs). Collectively, these investments in venture capital and private equity funds are primarily in U.S. and global technology and life science/healthcare companies. Included in the fair value and unfunded commitments of fund investments under fair value accounting are $55.0 million and $3.2 million, respectively, attributable to noncontrolling interests. It is estimated that we will receive distributions from the fund investments over the next 10 to 13 years, depending on the age of the funds and any potential extensions of terms of the funds. (2) Venture capital and private equity fund investments, debt funds, and other fund investments within non-marketable securities (equity method accounting) include funds that invest in or lend money to primarily U.S. and global technology and life science/healthcare companies. It is estimated that we will receive distributions from the funds over the next 5 to 8 years, depending on the age of the funds and any potential extensions of the terms of the funds.

Legal Matters

Legal Matters	9 Months Ended
Legal Matters	Sep. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Legal Matters	Legal Matters Certain lawsuits and claims arising in the ordinary course of business have been filed or are pending against us and/or our affiliates, and we may from time to time be involved in other legal or regulatory proceedings. In accordance with applicable accounting guidance, we establish accruals for all such matters, including expected settlements, when we believe it is probable that a loss has been incurred and the amount of the loss is reasonably estimable. When a loss contingency is not both probable and estimable, we do not establish an accrual. Any such loss estimates are inherently uncertain, based on currently available information and are subject to management’s judgment and various assumptions. Due to the inherent subjectivity of these estimates and unpredictability of outcomes of legal proceedings, any amounts accrued may not represent the ultimate resolution of such matters. To the extent we believe any potential loss relating to such matters may have a material impact on our liquidity, consolidated financial position, results of operations, and/or our business as a whole and is reasonably possible but not probable, we aim to disclose information relating to such potential loss. We also aim to disclose information relating to any material potential loss that is probable but not reasonably estimable. In such cases, where reasonably practicable, we aim to provide an estimate of loss or range of potential loss. No disclosures are generally made for any loss contingencies that are deemed to be remote. Based upon information available to us, our review of lawsuits and claims filed or pending against us to date and consultation with our outside legal counsel, we have not recognized a material accrual liability for any such matters, nor do we currently expect that these matters will result in a material liability to the Company. However, the outcome of litigation and other legal and regulatory matters is inherently uncertain, and it is possible that one or more of such matters currently pending or threatened could have an unanticipated material adverse effect on our liquidity, consolidated financial position, results of operations, and/or our business as a whole, in the future.

Related Parties

Related Parties	9 Months Ended
Related Parties	Sep. 30, 2020
Related Party Transactions [Abstract]
Related Parties	Related PartiesWe have no material related party transactions requiring disclosure. In the ordinary course of business, the Bank may extend credit to related parties, including executive officers, directors, principal shareholders and their related interests. Additionally, we provide real estate secured loans to eligible employees through our EHOP. For additional details, see Note 17 — “Employee Compensation and Benefit Plans" under Part II, Item 8 of our 2019 Form 10-K.

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
Basis of Presentation (Policies)	Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	SVB Financial Group is a diversified financial services company, as well as a bank holding company and a financial holding company. SVB Financial was incorporated in the state of Delaware in March 1999. Through our various subsidiaries and divisions, we offer a diverse set of banking and financial products and services to support our clients of all sizes and stages throughout their life cycles. In these notes to our unaudited interim consolidated financial statements, when we refer to “SVB Financial Group,” “SVBFG," the “Company,” “we,” “our,” “us” or use similar words, we mean SVB Financial Group and all of its subsidiaries collectively, including Silicon Valley Bank (the “Bank”), unless the context requires otherwise. When we refer to “SVB Financial” or the “Parent” we are referring only to the parent company, SVB Financial Group (not including subsidiaries).The accompanying unaudited interim consolidated financial statements reflect all adjustments of a normal and recurring nature that are, in the opinion of management, necessary to fairly present our financial position, results of operations and cash flows in accordance with GAAP. Such unaudited interim consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the SEC. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. The results of operations for the three and nine months ended September 30, 2020 are not necessarily indicative of results to be expected for any future periods. These unaudited interim consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2019 (“2019 Form 10-K”).
Use of Estimates	The preparation of unaudited interim consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Estimates may change as new information is obtained. Significant items that are subject to such estimates include measurements of fair value, the valuation of non-marketable and other equity securities, the valuation of equity warrant assets and the adequacy of the allowance for credit losses for loans and for unfunded credit commitments.
Principles of Consolidation and Presentation	Our unaudited interim consolidated financial statements include the accounts of SVB Financial Group and consolidated entities. We consolidate voting entities in which we have control through voting interests or entities through which we have a controlling financial interest in a variable interest entity (“VIE”). We determine whether we have a controlling financial interest in a VIE by determining if we have: (a) the power to direct the activities of the VIE that most significantly impact the entity’s economic performance, (b) the obligation to absorb the expected losses or (c) the right to receive the expected returns of the entity. Generally, we have significant variable interests if our commitments to a limited partnership investment represent a significant amount of the total commitments to the entity. We also evaluate the impact of related parties on our determination of variable interests in our consolidation conclusions. We consolidate VIEs in which we are the primary beneficiary based on a controlling financial interest. If we are not the primary beneficiary of a VIE, we record our pro-rata interests based on our ownership percentage. VIEs are entities where investors lack sufficient equity at risk for the entity to finance its activities without additional subordinated financial support or equity investors, as a group, lack one of the following characteristics: (a) the power to direct the activities that most significantly impact the entity’s economic performance, (b) the obligation to absorb the expected losses of the entity, or (c) the right to receive the expected returns of the entity. We assess VIEs to determine if we are the primary beneficiary of a VIE. A primary beneficiary is defined as a variable interest holder that has a controlling financial interest. A controlling financial interest requires both: (a) the power to direct the activities that most significantly impact the VIE’s economic performance and (b) obligation to absorb losses or receive benefits of a VIE that could potentially be significant to a VIE. Under this analysis, we also evaluate kick-out rights and other participating rights, which could provide us a controlling financial interest. The primary beneficiary of a VIE is required to consolidate the VIE. We also evaluate fees paid to managers of our limited partnership investments. We exclude those fee arrangements that are not deemed to be variable interests from the analysis of our interests in our investments in VIEs and the determination of a primary beneficiary, if any. Fee arrangements based on terms that are customary and commensurate with the services provided are deemed not to be variable interests and are, therefore, excluded.
Reclassifications	Certain prior period amounts primarily related to the adoption of the Accounting Standard Update (ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments) ("ASU 2016-13" or "CECL") as mentioned below have been reclassified to conform to current period presentations.
Loans	Loans are reported at amortized cost which consists of the principal amount outstanding, net of unearned loan fees. Unearned loan fees reflect unamortized deferred loan origination and commitment fees net of unamortized deferred loan origination costs. In addition to cash loan fees, we often obtain equity warrant assets that give us an option to purchase a position in a client company's stock in consideration for providing credit facilities. The grant date fair values of these equity warrant assets are deemed to be loan fees and are deferred as unearned income and recognized as an adjustment of loan yield through loan interest income. The net amount of unearned loan fees is amortized into loan interest income over the contractual terms of the underlying loans and commitments using the constant effective yield method, adjusted for actual loan prepayment experience, or the straight-line method, as applicable.
Allowance for Credit Losses: Loans	The allowance for credit losses for loans considers credit risk and is adjusted by a provision for expected credit losses ("ECL") charged to expense and reduced by the charge-off of loan amounts, net of recoveries. Our allowance for credit losses is an estimate of expected losses inherent with the Company's existing loans at the balance sheet date. Determining the appropriateness of the allowance is complex and requires judgment by management about the effect of matters that are inherently uncertain. Portfolio Segments and Risk-Based Segments The process to estimate the ECL on loans involves procedures to appropriately consider the unique characteristics of our six loan portfolio segments. Our six portfolio segments are determined by using the following risk dimensions: (i) underwriting methodology, (ii) industry niche and (iii) life stage. The six portfolio segments are further disaggregated into 11 classes of financing receivable, or risk-based segments, and represents the level at which credit risk is monitored. Credit quality is assessed and monitored by evaluating various attributes and the results of those evaluations are utilized in underwriting new loans and in our process to estimate ECL. Additionally, all of our loan and allowance for credit loss disclosures are presented at the risk-based segment level of disaggregation. For further information refer to Note 7 — “Loans and Allowance for Credit Losses: Loans and Unfunded Credit Commitments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report. The following provides additional information regarding our six portfolio segments and the additional disaggregation of our 11 risk-based segments: Global Fund Banking The vast majority of our Global Fund Banking (formerly Private Equity/Venture Capital) portfolio segment consists of capital call lines of credit, the repayment of which is dependent on the payment of capital calls by the underlying limited partner investors in the funds managed by certain private equity and venture capital firms. These facilities are generally governed by meaningful financial covenants oriented towards ensuring that the funds' remaining callable capital is sufficient to repay the loan, and larger commitments (typically provided to larger private equity funds) are often secured by an assignment of the general partner's right to call capital from the fund's limited partner investors. Investor Dependent - Accelerator (Early-Stage) and Growth (Mid-Stage and Later-Stage) Investor Dependent loans are comprised of two portfolio segments: (i) Accelerator, which is comprised of Early-Stage clients, and (ii) Growth, which is comprised of Mid-Stage and Later-Stage clients. Our Investor Dependent loans are made primarily to technology and life science/healthcare companies. Investor Dependent loans typically have modest or negative cash flows and no established record of profitable operations. Repayment of these loans may be dependent upon receipt by borrowers of additional equity financing from venture capital firms or others, or in some cases, a successful sale to a third party or an IPO. Venture capital firms may provide financing selectively, at reduced amounts, or on less favorable terms, which may have an adverse effect on our borrowers' ability to repay their loans to us. When repayment is dependent upon the next round of venture investment and there is an indication that further investment is unlikely or will not occur, it is often likely that the company would need to be sold to repay the debt in full. If reasonable efforts have not yielded a likely buyer willing to repay all debt at the close of the sale or on commercially viable terms, the account will most likely be deemed to be non-performing or charged-off. Our Accelerator, or Early-Stage, portfolio segment consists of pre-revenue, development-stage companies and companies that are in the early phases of commercialization, with revenues of up to $5 million. Our Growth portfolio segment is disaggregated into two risk-based segments for disclosure purposes; Mid-Stage and Later-Stage. Mid-Stage companies consist of growth-stage enterprises with revenues of between $5 million and $15 million or, in the case of biotechnology, pre-revenue clinical-stage companies. Later-Stage consists of companies with revenues of $15 million or more. This disaggregation of our Investor Dependent loans is based in part on the materially different historical loss rate we have experienced with each risk-based segment, with historical loss rates being the highest in the Early-Stage portfolio segment, and declining in the Mid-Stage and Later-Stage risk-based segments, as a function of the relatively higher enterprise value and asset coverage that is created as a company progresses through the various stages of development. Cash Flow and Balance Sheet Dependent Our Cash Flow and Balance Sheet Dependent portfolio segment is disaggregated into Cash Flow Dependent and Balance Sheet Dependent loans. Additionally, our Cash Flow Dependent loans are disaggregated into two risk-based segments for disclosure purposes: (i) Sponsor Led Buyout and (ii) Other. Our Cash Flow Dependent loans are made primarily to technology and life science/healthcare companies and require the borrower to maintain cash flow from operations that is sufficient to service all debt. Borrowers must demonstrate normalized cash flow in excess of all fixed charges associated with operating the business. Sponsor Led Buyout loans are typically used to assist a select group of experienced private equity sponsors with the acquisition of businesses, are larger in size, and repayment is generally dependent upon the cash flows of the acquired company. The acquired companies are typically established, later-stage businesses of scale and characterized by reasonable levels of leverage with loan structures that include meaningful financial covenants. The sponsor's equity contribution is often 50 percent or more of the acquisition price. Balance Sheet Dependent loans are made primarily to technology and life science/healthcare companies, which include asset-based loans, and are structured to require constant current asset coverage (i.e., cash, cash equivalents, accounts receivable and, to a much lesser extent, inventory) in an amount that exceeds the outstanding debt. These loans are generally made to companies in our Growth and Corporate Finance practices. The repayment of these arrangements is dependent on the financial condition, and payment ability, of third parties with whom our clients do business. As a result of the adoption of CECL and in connection with the revised approach to portfolio disaggregation discussed above, certain loans that were previously considered to be Balance Sheet Dependent have been reclassified as Investor Dependent - Later-Stage. Private Bank Our Private Bank clients are primarily private equity/venture capital professionals and executives in the innovation companies they support. We offer a customized suite of private banking services, including mortgages, home equity lines of credit, restricted and private stock loans, capital call lines of credit, lines of credit against liquid assets and other secured and unsecured lending products, as well as cash and wealth management services. In addition, we provide owner occupied commercial mortgages to Private Bank clients and real estate secured loans to eligible employees through our EHOP. Other Our Other portfolio segment consists of two risk-based segments for disclosure purposes: (i) Premium Wine and (ii) Other. Our Premium Wine clients primarily consist of premium wine producers, vineyards and wine industry or hospitality related businesses across the Western United States, primarily in California's Napa Valley, Sonoma County and Central Coast regions, as well as the Pacific Northwest. Our Other risk-based segment primarily includes our community development loans made as part of our responsibilities under the Community Reinvestment Act. SBA Loans The U.S. Small Business Administration’s ("SBA") loans are included across all of our six portfolio segments and are separately disclosed as a single risk-based segment. We participated in the SBA's Paycheck Protection Program ("PPP") to support small businesses across the United States. Under this program, the SBA provides a guarantee to banks making unsecured term loans of up to $10 million for qualified small businesses, as defined by the SBA. We are no longer taking applications for this program and have begun accepting forgiveness applications from clients, whereby clients apply for loans to be forgiven (paid off) by the SBA. Loans funded under this program were primarily made to clients in the technology, life science/healthcare, premium wine and energy resource industries. While the recipients were located across the United States, more than half were made to clients that applied from the western United States. We maintain a systematic process for the evaluation of individual loans and portfolio segments for inherent risk of estimated credit losses for loans. At the time of approval, each loan in our portfolio is assigned a credit risk rating. Credit risk ratings are assigned on a scale of 1 to 10, with 1 representing loans with a low risk of nonpayment, 9 representing loans with the highest risk of nonpayment and 10 representing loans which have been charged-off. The credit risk ratings for each loan are monitored and updated on an ongoing basis. This credit risk rating process includes, but is not limited to, consideration of such factors as payment status, the financial condition and operating performance of the borrower, borrower compliance with loan covenants, underlying collateral values and performance trends, the degree of access to additional capital, the presence of credit enhancements such as third party guarantees (where applicable), the degree to which the borrower is sensitive to external factors and the depth and experience of the borrower's management team. Our policies require a committee of senior management to review, at least quarterly, credit relationships with a credit risk rating of 5 through 9 that exceed specific dollar values. Expected Credit Loss Measurement The methodology for estimating the amount of ECL reported in the allowance for credit losses is the sum of two main components: (1) ECL assessed on a collective basis for pools of loans that share similar risk characteristics which includes a qualitative adjustment based on management’s assessment of the risks that may lead to a future loan loss experience different from our historical loan loss experience and (2) ECL assessed for individual loans that do not share similar risk characteristics with other loans. We do not estimate ECL on accrued interest receivable ("AIR") on loans as AIR is reversed or written off when the full collection of the AIR related to a loan becomes doubtful. AIR on loans totaled $109.3 million at September 30, 2020 and $119.1 million at December 31, 2019 and is reported in "Accrued interest receivable and other assets" in our unaudited interim consolidated balance sheets. While the evaluation process of our allowance for credit losses on loans uses historical and other objective information, the classification of loans and the estimate of the allowance for credit losses for loans rely on the judgment and experience of our management. A committee comprised of senior management evaluates the adequacy of the allowance for credit losses for loans, which includes review of loan portfolio segmentation, quantitative models, internal and external data inputs, economic forecasts, credit risk ratings and qualitative adjustments. Loans That Share Similar Risk Characteristics with Other Loans We derive an estimated ECL assumption from a non-discounted cash flow approa ch based on our portfolio segments discussed above. This approach incorporates a calculation of three predictive metrics: (1) probability of default ("PD"), (2) loss giv en default ("LGD") and (3) exposure at default ("EAD"), over the estimated life of the exposure. PD and LGD assumptions are developed based on quantitative models and inherent risk of credit loss, both of which involve significant judgment. Renewals and extensions within our control are not considered in the estimated contractual term of a loan. However, we include potential extensions if management has a reasonable expectation that we will execute a TDR with the borrower. The quantitative models are based on historical credit loss experience, adjusted for probability-weighted economic scenarios. These scenarios are used to support a reasonable and supportable forecast period of three years for all portfolio segments. To the extent the remaining contractual lives of loans in the portfolio extend beyond this three-year period, we revert to historical averages using an autoregressive model of mean reversion that will continue to gradually trend towards the mean historical loss over the remaining contractual lives, adjusted for prepayments. The macroeconomic scenarios are reviewed on a quarterly basis. We also apply a qualitative factor adjustment to the results obtained through our quantitative ECL models to consider model imprecision, emerging risk assessments, trends and other subjective factors that may not be adequately represented in the quantitative ECL models. These adjustments reflect our assessment of the extent that current conditions and reasonable and supportable forecasts differ from conditions that existed during the period over which historical information was evaluated. These adjustments are aggregated to become our qualitative allocation. Based on our qualitative assessment estimate of changing risks in the lending environment, the qualitative allocation may vary significantly from period to period and may include, but is not limited to, consideration of the following factors: • Changes in lending policies and procedures, including changes in underwriting standards and collection, charge-off, and recovery practices not considered elsewhere in estimating credit losses; • Changes in international, national, regional, and local economic and business conditions and developments that affect the collectability of the portfolio, including the condition of various market segments; • Changes in the nature and volume of the portfolio and in the terms of loans; • Changes in the experience, ability and depth of lending management and other relevant staff; • Changes in the volume and severity of past due loans, the volume of nonaccrual loans and the volume and severity of adversely classified or graded loans; • Changes in the quality of our loan review system; • Changes in the value of underlying collateral for collateral-dependent loans; • The existence and effect of any concentrations of credit, and changes in the level of such concentrations; • The effect of other external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in our existing portfolio; and • The effect of limitations of available data, model imprecision and recent macro-economic factors that may not be reflected in the forecast information. Loans That Do Not Share Similar Risk Characteristics We monitor our loan pools to ensure all assets therein continue to share similar risk characteristics with other financial assets inside the pool. Changes in credit risk, borrower circumstances or the recognition of write-offs may indicate that a loan's risk profile has changed, and the asset should be removed from its current pool. For a loan that does not share risk characteristics with other loans, expected credit loss is measured based on the net realizable value, that is, the difference between the discounted value of the expected future cash flows and the amortized cost basis of the loan. When a loan is collateral-dependent and the repayment is expected to be provided substantially through the operation or sale of the collateral, the ECL is measured as the difference between the amortized cost basis of the loan and the fair value of the collateral. The fair value of the collateral will be determined by the most recent appraisal, as adjusted to reflect a reasonable marketing period for the sale of the asset(s) and an estimate of reasonable selling expenses. Collateral-dependent loans will have independent appraisals completed and accepted at least annually. Allowance for Credit Losses: Unfunded Credit Commitments We maintain a separate allowance for credit losses for unfunded credit commitments which is included in other liabilities and the related ECL in our provision for credit losses. We estimate the amount of expected losses by using historical trends to calculate a probability of an unfunded credit commitment being funded and derive historical lifetime expected loss factors for each portfolio segment similar to our funded loan ECL. The collectively assessed ECL for unfunded credit commitments also includes the same qualitative allocations applied for our funded loan ECL. For unfunded credit commitments related to loans that do not share similar risk characteristics with other loans, where applicable, a separate estimate of ECL will be included in our total allowance for credit losses on unfunded credit commitments. Loan commitments that are determined to be unconditionally cancellable by the Company do not require an allowance for credit losses on unfunded commitments.
Investment Securities	Available-for-Sale Securities and the Allowance for Credit Losses on Available-for-Sale Securities Our available-for-sale securities portfolio is a fixed income investment portfolio that is managed to earn an appropriate portfolio yield over the long-term while maintaining sufficient liquidity and credit diversification and meeting our asset/liability management objectives. Unrealized gains and losses on available-for-sale securities, net of applicable taxes, are reported in accumulated other comprehensive income, which is a separate component of SVBFG's stockholders' equity, until realized. We analyze available-for-sale securities for impairment related to credit losses each quarter. Market valuations represent the current fair value of a security at a specified point in time and incorporates the risk of timing of interest due and the return of principal over the contractual life of each security. Gains and losses on securities are realized when there is a sale of the security prior to maturity. A credit impairment is recognized through a valuation allowance against the security with an offset through earnings; the allowance is limited to the amount that fair value, calculated as the present value of expected future cash flow discounted at the security’s effective interest rate, is less than the amortized cost basis. We separate the amount of the impairment related to credit losses, if any, and the amount due to all other factors. The credit loss component is recognized in earnings and recorded as an allowance for credit losses for AFS securities. Held-to-Maturity Securities and the Allowance for Credit Losses on Held-to-Maturity Securities Debt securities purchased with the positive intent and ability to hold to maturity are classified as held-to-maturity securities and are recorded at amortized cost, net of any allowance for credit losses.
Adoption of New Accounting Standards and Recent Accounting Pronouncements	Financial Instruments - Credit Losses In June 2016, the FASB issued a new Accounting Standard Update (ASU 2016-13, Financial Instruments- Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments), which amends the incurred loss impairment methodology in current GAAP with a methodology that reflects a current expected credit loss measurement to estimate the allowance for credit losses over the contractual life of the financial assets (including loans, unfunded credit commitments and HTM securities) and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. While the CECL model does not apply to available-for-sale debt securities, ASU 2016-13 does require entities to record an allowance for credit losses when recognizing credit losses for available-for-sale securities, rather than reduce the amortized cost of the securities by direct write-offs, which allows for reversal of credit impairments in future periods based on improvements in credit. We adopted the guidance on January 1, 2020, using a modified retrospective approach. We recognized the cumulative effect of initially applying CECL as an adjustment to the opening balance of retained earnings, net of tax. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. We completed a comprehensive implementation process that included loss forecasting model development, evaluation of technical accounting topics, updates to our allowance for credit loss accounting policies, reporting processes and related internal controls, overall operational readiness for our adoption of CECL as well as parallel runs for CECL alongside our previous allowance process. We provided quarterly updates to senior management and to the Audit and Credit Committees of the Board of Directors throughout the implementation process. For additional details regarding our allowance for credit losses methodology, see Note 7 — “Loans and Allowance for Credit Losses: Loans and Unfunded Credit Commitments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report. Based on our loan, unfunded credit commitment, and HTM security portfolios composition at December 31, 2019, and the then current economic environment, the cumulative effect of the changes to our consolidated balance sheets at January 1, 2020, for the adoption of CECL were as follows: Balance at December 31, 2019 Adjustments Due to Adoption of ASC 326 Balance at Assets: Allowance for credit losses: loans $ 304,924 $ 25,464 $ 330,388 Allowance for credit losses: held-to-maturity securities — 174 174 Deferred tax assets 28,433 13,415 41,848 Other liabilities: Allowance for credit losses: unfunded credit commitments 67,656 22,826 90,482 Stockholders' equity: Retained earnings, net of tax 4,575,601 (35,049) 4,540,552 In light of the economic disruptions and operational challenges related to the Coronavirus Disease 2019 pandemic (“COVID-19”), in March 2020 the federal banking agencies provided transitional relief to banking organizations with respect to the impact of CECL on regulatory capital (the “2020 CECL Transition Rule”). Under the 2020 CECL Transition Rule, banking organizations that adopt CECL during the 2020 calendar year, such as SVB Financial and the Bank, may delay the estimated impact of CECL on regulatory capital for two years, followed by a three-year period to phase out the aggregate capital benefit provided during the initial two-year delay. The rule prescribes a methodology for estimating the impact of differences in credit loss allowances reflected under CECL versus under the incurred loss methodology during the five-year transition period. We have elected to use the five-year transition option under the 2020 CECL Transition Rule. Refer to the "Capital Resources" section under Part I, Item 2 of this report for additional details. Additionally, under the prior guidance, our loan portfolio and credit quality disclosures were disaggregated based on client market segments. Upon adoption of CECL, our technology (software/internet and hardware) and life science/healthcare market segments are disclosed by disaggregated risk-based segments determined by portfolio segments that align with their respective underwriting methodology and the level at which credit risk is now monitored by management. The primary underwriting method for our technology and life science/healthcare portfolios are classified as Investor Dependent - Accelerator (Early-Stage) and Growth (Mid-Stage and Later-Stage) and Cash Flow (Sponsor Led Buyout and Other) and Balance Sheet Dependent, as noted above, and prior period amounts were reclassified for comparability. There are no other material changes to our current market segments. Other Adopted Accounting Pronouncements In August 2018, the FASB issued a new Accounting Standard Update (ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement). The ASU primarily modifies certain disclosures with respect to Level 3 fair value measurements. We adopted the guidance on January 1, 2020. The adoption did not have an impact on our consolidated financial position or results of operations and did not have a material impact on the disclosures in our notes to our unaudited interim consolidated financial statements.

Basis of Presentation (Tables)

Basis of Presentation (Tables)	9 Months Ended
Basis of Presentation (Tables)	Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	Based on our loan, unfunded credit commitment, and HTM security portfolios composition at December 31, 2019, and the then current economic environment, the cumulative effect of the changes to our consolidated balance sheets at January 1, 2020, for the adoption of CECL were as follows: Balance at December 31, 2019 Adjustments Due to Adoption of ASC 326 Balance at Assets: Allowance for credit losses: loans $ 304,924 $ 25,464 $ 330,388 Allowance for credit losses: held-to-maturity securities — 174 174 Deferred tax assets 28,433 13,415 41,848 Other liabilities: Allowance for credit losses: unfunded credit commitments 67,656 22,826 90,482 Stockholders' equity: Retained earnings, net of tax 4,575,601 (35,049) 4,540,552

Stockholders' Equity and EPS (T

Stockholders' Equity and EPS (Tables)	9 Months Ended
Stockholders' Equity and EPS (Tables)	Sep. 30, 2020
Equity and Earnings Per Share [Abstract]
Reclassification out of Accumulated Other Comprehensive Income	The following table summarizes the items reclassified out of accumulated other comprehensive income into the Consolidated Statements of Income (unaudited) for the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) Income Statement Location 2020 2019 2020 2019 Reclassification adjustment for (gains) losses on available-for-sale securities included in net income Gains on investment securities, net $ — $ — $ (61,165) $ 3,905 Related tax expense (benefit) Income tax expense — — 16,953 (1,087) Reclassification adjustment for (gains) losses on cash flow hedges included in net income Net interest income (16,004) 2,713 (33,924) 3,224 Related tax expense (benefit) Income tax expense 4,436 (755) 9,403 (897) Total reclassification adjustment for (gains) losses included in net income, net of tax $ (11,568) $ 1,958 $ (68,733) $ 5,145
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	The table below summarizes the activity relating to net gains and losses on our cash flow hedges included in accumulated other comprehensive income for the three and nine months ended September 30, 2020 and 2019. Refer to Note 11 — “Derivative Financial Instruments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional information regarding the termination of our cash flow hedges during the quarter ended March 31, 2020. Over the next 12 months, we expect that approximately $63.5 million in accumulated other comprehensive income ("AOCI") at September 30, 2020, related to unrealized gains will be reclassified out of AOCI and recognized in net income. Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Balance, beginning of period, net of tax $ 152,556 $ 13,828 $ (2,130) $ — Net increase in fair value, net of tax — 7,077 167,639 20,536 Net realized (gain) loss reclassified to net income, net of tax (11,568) 1,958 (24,521) 2,327 Balance, end of period, net of tax $ 140,988 $ 22,863 $ 140,988 $ 22,863
Reconciliation of Basic EPS to Diluted EPS	The following is a reconciliation of basic EPS to diluted EPS for the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Dollars and shares in thousands, except per share amounts) 2020 2019 2020 2019 Numerator: Net income available to common stockholders $ 441,713 $ 267,281 $ 802,901 $ 874,000 Denominator: Weighted average common shares outstanding—basic 51,773 51,545 51,640 52,025 Weighted average effect of dilutive securities: Stock options and ESPP 141 203 147 238 Restricted stock units and awards 232 110 163 168 Weighted average common shares outstanding—diluted 52,146 51,858 51,950 52,431 Earnings per common share: Basic $ 8.53 $ 5.19 $ 15.55 $ 16.80 Diluted 8.47 5.15 15.46 16.67
Schedule of Antidilutive Securities Excluded from Computation of Earnings per Share	The following table summarizes the weighted-average common shares excluded from the diluted EPS calculation due to the antidilutive effect for the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Shares in thousands) 2020 2019 2020 2019 Stock options 319 213 269 154 Restricted stock units 55 432 83 294 Total 374 645 352 448
Schedule of Stock by Class	The following table summarizes our preferred stock at September 30, 2020: Series Description Amount outstanding (in millions) Carrying value Shares issued and outstanding Par Value Ownership interest per depository share Liquidation preference per depository share 2020 dividends paid per depository share Series A 5.250% Fixed-Rate Non-Cumulative Perpetual Preferred Stock $ 350 $ 340.1 350,000 $ 0.001 1/40th $ 25 $ 0.90

Share-Based Compensation (Table

Share-Based Compensation (Tables)	9 Months Ended
Share-Based Compensation (Tables)	Sep. 30, 2020
Share-based Payment Arrangement [Abstract]
Share-based Compensation and Related Benefits	For the three and nine months ended September 30, 2020 and 2019, we recorded share-based compensation and related tax benefits as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Share-based compensation expense $ 21,408 $ 18,782 $ 60,733 $ 50,550 Income tax benefit related to share-based compensation expense (5,560) (4,883) (14,726) (12,028)
Unrecognized Share-based Compensation Expense	As of September 30, 2020, unrecognized share-based compensation expense was as follows: (Dollars in thousands) Unrecognized Weighted Average Expected Stock options $ 15,541 2.60 Restricted stock units and awards 125,321 2.68 Total unrecognized share-based compensation expense $ 140,862
Stock Option Information Related to Equity Incentive Plan	The table below provides stock option information related to the 2006 Equity Incentive Plan for the nine months ended September 30, 2020: Options Weighted Weighted Average Remaining Contractual Life - in Years Aggregate Outstanding at December 31, 2019 625,407 $ 169.33 Granted 123,301 186.83 Exercised (130,330) 99.72 Forfeited (15,460) 231.75 Expired (1,030) 71.11 Outstanding at September 30, 2020 601,888 186.55 4.08 $ 38,405,994 Vested and expected to vest at September 30, 2020 578,024 185.26 4.00 $ 37,654,264 Exercisable at September 30, 2020 317,896 152.61 2.59 $ 30,524,026
Information for Restricted Stock Units under Equity Incentive Plan	The table below provides information for restricted stock units and awards under the 2006 Equity Incentive Plan for the nine months ended September 30, 2020: Shares Weighted Average Grant Date Fair Value Nonvested at December 31, 2019 847,972 $ 236.54 Granted 426,071 190.79 Vested (247,370) 207.82 Forfeited (49,272) 226.32 Nonvested at September 30, 2020 977,401 224.38

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	9 Months Ended
Variable Interest Entities (Tables)	Sep. 30, 2020
Investments In Variable Interest Entities [Abstract]
Schedule of Variable Interest Entities	The following table presents the carrying amounts and classification of significant variable interests in consolidated and unconsolidated VIEs as of September 30, 2020 and December 31, 2019: (Dollars in thousands) Consolidated VIEs Unconsolidated VIEs Maximum Exposure to Loss in Unconsolidated VIEs September 30, 2020: Assets: Cash and cash equivalents $ 14,082 $ — $ — Non-marketable and other equity securities (1) 318,356 771,329 771,329 Accrued interest receivable and other assets 853 — — Total assets $ 333,291 $ 771,329 $ 771,329 Liabilities: Other liabilities (1) 1,500 332,031 — Total liabilities $ 1,500 $ 332,031 $ — December 31, 2019: Assets: Cash and cash equivalents $ 7,629 $ — $ — Non-marketable and other equity securities (1) 270,057 689,360 689,360 Accrued interest receivable and other assets 1,117 — — Total assets $ 278,803 $ 689,360 $ 689,360 Liabilities: Other liabilities (1) 2,854 302,031 — Total liabilities $ 2,854 $ 302,031 $ — (1) Included in our unconsolidated non-marketable and other equity securities portfolio at September 30, 2020 and December 31, 2019 are investments in qualified affordable housing projects of $561.0 million and $458.5 million, respectively, and related other liabilities consisting of unfunded commitments of $332.0 million and $302.0 million, respectively.

Cash and Cash Equivalents (Tabl

Cash and Cash Equivalents (Tables)	9 Months Ended
Cash and Cash Equivalents (Tables)	Sep. 30, 2020
Cash and Cash Equivalents [Abstract]
Schedule of Cash and Cash Equivalents	The following table details our cash and cash equivalents at September 30, 2020 and December 31, 2019: (Dollars in thousands) September 30, 2020 December 31, 2019 Cash and due from banks (1) $ 15,237,612 $ 6,492,443 Securities purchased under agreements to resell (2) 450,164 289,340 Total cash and cash equivalents $ 15,687,776 $ 6,781,783 (1) At September 30, 2020 and December 31, 2019, $11.9 billion and $3.7 billion, respectively, of our cash and due from banks was deposited at the Federal Reserve Bank and was earning interest at the Federal Funds target rate, and interest-earning deposits in other financial institutions were $2.7 billion and $2.1 billion, respectively. (2) At September 30, 2020 and December 31, 2019, securities purchased und er agreements to resell were collateralized by U.S. Treasury securities and U.S. agency securities with aggregate fair value s of $459.1 million a n d $295.3 million, respectively. None of these securities were sold or repledged as of September 30, 2020 and December 31, 2019.

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
Investment Securities (Tables)	Sep. 30, 2020
Investments, Debt and Equity Securities [Abstract]
Components of Available-for-Sale Securities Portfolio	The major components of our available-for-sale investment securities portfolio at September 30, 2020 and December 31, 2019 are as follows: September 30, 2020 (Dollars in thousands) Amortized Unrealized Unrealized Carrying Available-for-sale securities, at fair value: U.S. Treasury securities $ 4,251,342 $ 295,952 $ — $ 4,547,294 U.S. agency debentures 150,000 2,526 — 152,526 Foreign government debt securities 23,452 — (3) 23,449 Residential mortgage-backed securities: Agency-issued mortgage-backed securities 9,569,724 200,691 (102) 9,770,313 Agency-issued collateralized mortgage obligations—fixed rate 7,277,652 45,809 (7,488) 7,315,973 Agency-issued commercial mortgage-backed securities 3,965,370 130,384 (985) 4,094,769 Total available-for-sale securities $ 25,237,540 $ 675,362 $ (8,578) $ 25,904,324 December 31, 2019 (Dollars in thousands) Amortized Unrealized Unrealized Carrying Available-for-sale securities, at fair value: U.S. Treasury securities $ 6,815,874 $ 82,267 $ (4,131) $ 6,894,010 U.S. agency debentures 100,000 — (453) 99,547 Foreign government debt securities 9,037 1 — 9,038 Residential mortgage-backed securities: Agency-issued mortgage-backed securities 4,109,372 39,438 (19) 4,148,791 Agency-issued collateralized mortgage obligations—fixed rate 1,520,414 17,929 — 1,538,343 Agency-issued commercial mortgage-backed securities 1,339,651 1,078 (15,539) 1,325,190 Total available-for-sale securities $ 13,894,348 $ 140,713 $ (20,142) $ 14,014,919
Activity of Available-for-Sale Securities	The following table summarizes sale activity of available-for-sale securities during the three and nine months ended September 30, 2020 and 2019 as recorded in the line item “Gains on investment securities, net," a component of noninterest income: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Sales proceeds $ — $ — $ 2,654,212 $ 2,189,087 Net realized gains and losses: Gross realized gains — — 61,165 1,250 Gross realized losses — — — (5,155) Net realized gains (losses) $ — $ — $ 61,165 $ (3,905)
Summary of Unrealized Losses on Available for Sale Securities	The following tables summarize our available-for-sale securities in an unrealized loss position for which an allowance for credit losses has not been recorded and summarized into categories of less than 12 months, or 12 months or longer, as of September 30, 2020 and December 31, 2019: September 30, 2020 Less than 12 months 12 months or longer (1) Total (Dollars in thousands) Fair Value of Unrealized Fair Value of Unrealized Fair Value of Unrealized Available-for-sale securities: Foreign government debt securities $ 23,449 $ (3) $ — $ — $ 23,449 $ (3) Residential mortgage-backed securities: Agency-issued mortgage-backed securities 179,050 (102) — — 179,050 (102) Agency-issued collateralized mortgage obligations—fixed rate 1,772,593 (7,488) — — 1,772,593 (7,488) Agency-issued commercial mortgage-backed securities 518,223 (985) — — 518,223 (985) Total available-for-sale securities (1) $ 2,493,315 $ (8,578) $ — $ — $ 2,493,315 $ (8,578) (1) As of September 30, 2020, we identified a total of 57 investments that were in unrealized loss positions with no investment in an unrealized loss position for a period of time greater than 12 months. Based on our analysis of the securities in an unrealized loss position as of September 30, 2020, the decline in value is unrelated to credit loss and is related to changes in market interest rates since purchase and therefore changes in value for securities are included in other comprehensive income. Market valuations and credit loss analyses on assets in the available-for-sale securities portfolio are reviewed and monitored on a quarterly basis. As of September 30, 2020, we do not intend to sell any of our securities in an unrealized loss position prior to recovery of our amortized cost basis, and it is more likely than not that we will not be required to sell any of our securities prior to recovery of our amortized cost basis. None of the investments in our available-for-sale securities portfolio were past due as of September 30, 2020. December 31, 2019 Less than 12 months 12 months or longer (1) Total (Dollars in thousands) Fair Value of Unrealized Fair Value of Unrealized Fair Value of Unrealized Available-for-sale securities: U.S. Treasury securities $ 971,572 $ (3,996) $ 449,850 $ (135) $ 1,421,422 $ (4,131) U.S. agency debentures 99,547 (453) — — 99,547 (453) Residential mortgage-backed securities: Agency-issued mortgage-backed securities 4,014 (19) — — 4,014 (19) Agency-issued commercial mortgage-backed securities 1,027,232 (15,539) — — 1,027,232 (15,539) Total available-for-sale securities (1) $ 2,102,365 $ (20,007) $ 449,850 $ (135) $ 2,552,215 $ (20,142) (1) As of December 31, 2019, we identified a total of 58 investments that were in unrealized loss positions, of which 12 investments totaling $0.4 billion with unrealized losses of $0.1 million have been in an unrealized loss position for a period of time greater than 12 months.
Summary of Remaining Contractual Principal Maturities and Fully Taxable Equivalent Yields on Securities	The following table summarizes the fixed income securities, carried at fair value, classified as available-for-sale as of September 30, 2020 by the remaining contractual principal maturities. For U.S. Treasury securities, U.S. agency debentures and foreign government debt securities, the expected maturity is the actual contractual maturity of the notes. Expected maturities for mortgage-backed securities may differ significantly from their contractual maturities because mortgage borrowers have the right to prepay outstanding loan obligations with or without penalties. Mortgage-backed securities classified as available-for-sale typically have original contractual maturities from 10 to 30 years whereas expected average lives of these securities tend to be significantly shorter and vary based upon structure and prepayments in lower interest rate environments. September 30, 2020 (Dollars in thousands) Total One Year After One After Five After U.S. Treasury securities $ 4,547,294 $ 60,221 $ 2,989,181 $ 1,497,892 $ — U.S. agency debentures 152,526 — — 152,526 — Foreign government debt securities 23,449 23,449 — — — Residential mortgage-backed securities: Agency-issued mortgage-backed securities 9,770,313 — — — 9,770,313 Agency-issued collateralized mortgage obligations—fixed rate 7,315,973 — — — 7,315,973 Agency-issued commercial mortgage-backed securities 4,094,769 — — 1,431,547 2,663,222 Total $ 25,904,324 $ 83,670 $ 2,989,181 $ 3,081,965 $ 19,749,508 The following table summarizes the remaining contractual principal maturities on fixed income investment securities classified as held-to-maturity as of September 30, 2020. For U.S. agency debentures, the expected maturity is the actual contractual maturity of the notes. Expected remaining maturities for certain U.S. agency debentures may occur earlier than their contractual maturities because the note issuers have the right to call outstanding amounts ahead of their contractual maturity. Expected maturities for mortgage-backed securities may differ significantly from their contractual maturities because mortgage borrowers have the right to prepay outstanding loan obligations with or without penalties. Mortgage-backed securities classified as held-to-maturity typically have original contractual maturities from 10 to 30 years whereas expected average lives of these securities tend to be significantly shorter and vary based upon structure and prepayments in lower interest rate environments. September 30, 2020 Total One Year After One Year to After Five Years to After (Dollars in thousands) Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value U.S. agency debentures $ 402,346 $ 421,842 $ 4,675 $ 4,720 $ 148,559 $ 153,787 $ 249,112 $ 263,335 $ — $ — Residential mortgage-backed securities: Agency-issued mortgage-backed securities 5,363,541 5,629,934 7,113 7,432 28,722 29,739 588,606 609,151 4,739,100 4,983,612 Agency-issued collateralized mortgage obligations — fixed rate 1,909,965 1,936,129 — — — — 551,213 563,127 1,358,752 1,373,002 Agency-issued collateralized mortgage obligations — variable rate 147,714 148,076 — — — — — — 147,714 148,076 Agency-issued commercial mortgage-backed securities 2,229,811 2,383,872 — — — — 102,428 120,085 2,127,383 2,263,787 Municipal bonds and notes 2,929,137 3,092,610 44,340 44,839 134,029 140,191 540,308 587,096 2,210,460 2,320,484 Total $ 12,982,514 $ 13,612,463 $ 56,128 $ 56,991 $ 311,310 $ 323,717 $ 2,031,667 $ 2,142,794 $ 10,583,409 $ 11,088,961
Held-to-maturity Securities	The components of our held-to-maturity investment securities portfolio at September 30, 2020 and December 31, 2019 are as follows: September 30, 2020 (Dollars in thousands) Amortized Unrealized Unrealized Fair Value Allowance for Credit Losses (2) Held-to-maturity securities, at cost: U.S. agency debentures (1) $ 402,346 $ 19,496 $ — $ 421,842 $ — Residential mortgage-backed securities: Agency-issued mortgage-backed securities 5,363,541 266,455 (62) 5,629,934 — Agency-issued collateralized mortgage obligations —fixed rate 1,909,965 26,601 (437) 1,936,129 — Agency-issued collateralized mortgage obligations—variable rate 147,714 362 — 148,076 — Agency-issued commercial mortgage-backed securities 2,229,811 154,061 — 2,383,872 — Municipal bonds and notes 2,929,137 171,591 (8,118) 3,092,610 291 Total held-to-maturity securities $ 12,982,514 $ 638,566 $ (8,617) $ 13,612,463 $ 291 (1) Consists of pools of Small Business Investment Company debentures issued and guaranteed by the U.S. Small Business Administration, an independent agency of the United States. (2) Refer to Note 1 - "Basis of Presentation" of the "Notes to Interim Consolidated Financial Statements (unaudited)" under Part i, Item 1 of this report for more information on our credit loss methodology. December 31, 2019 (Dollars in thousands) Amortized Unrealized Unrealized Fair Value Held-to-maturity securities, at amortized cost: U.S. agency debentures (1) $ 518,728 $ 6,640 $ (668) $ 524,700 Residential mortgage-backed securities: Agency-issued mortgage-backed securities 6,992,009 142,209 (2,066) 7,132,152 Agency-issued collateralized mortgage obligations—fixed rate 1,608,032 592 (8,502) 1,600,122 Agency-issued collateralized mortgage obligations—variable rate 178,611 94 (259) 178,446 Agency-issued commercial mortgage-backed securities 2,759,615 56,914 (4,508) 2,812,021 Municipal bonds and notes 1,785,951 83,314 (1,434) 1,867,831 Total held-to-maturity securities $ 13,842,946 $ 289,763 $ (17,437) $ 14,115,272 (1) Consists of pools of Small Business Investment Company debentures issued and guaranteed by the U.S. Small Business Administration, an independent agency of the United States.
Debt Securities, Held-to-maturity, Allowance for Credit Loss	The following table summarizes the activity relating to our allowance for credit losses for HTM securities for the three and nine months ended September 30, 2020: Three months ended September 30, Beginning Balance June 30, 2020 Provision for Credit Losses Ending Balance September 30, 2020 (Dollars in thousands) Municipal bonds and notes $ 222 $ 69 $ 291 Total allowance for credit losses $ 222 $ 69 $ 291 Nine months ended September 30, Beginning Balance December 31, 2019 Day One Impact of adopting ASC 326 Provision for Credit Losses Ending Balance September 30, 2020 (Dollars in thousands) Municipal bonds and notes $ — $ 174 $ 117 $ 291 Total allowance for credit losses $ — $ 174 $ 117 $ 291
Debt Securities, Held-to-maturity, Credit Quality Indicator	On a quarterly basis, management monitors the credit quality for HTM securities through the use of standard credit ratings. The following table summarizes our amortized cost of HTM securities aggregated by credit quality indicator at September 30, 2020: (Dollars in thousands) September 30, 2020 Municipal bonds and notes: Aaa $ 1,732,450 Aa1 935,970 Aa2 259,767 Aa3 950 Total $ 2,929,137
Schedule of Nonmarketable and Other Securities	The major components of our non-marketable and other equity securities portfolio at September 30, 2020 and December 31, 2019 are as follows: (Dollars in thousands) September 30, 2020 December 31, 2019 Non-marketable and other equity securities: Non-marketable securities (fair value accounting): Consolidated venture capital and private equity fund investments (1) $ 74,293 $ 87,180 Unconsolidated venture capital and private equity fund investments (2) 152,367 178,217 Other investments without a readily determinable fair value (3) 56,008 55,255 Other equity securities in public companies (fair value accounting) (4) 229,297 59,200 Non-marketable securities (equity method accounting) (5): Venture capital and private equity fund investments 274,721 215,367 Debt funds 6,918 7,271 Other investments 192,776 152,863 Investments in qualified affordable housing projects, net (6) 560,983 458,476 Total non-marketable and other equity securities $ 1,547,363 $ 1,213,829 (1) The following table shows the amounts of venture capital and private equity fund investments held by the following consolidated funds and our ownership percentage of each fund at September 30, 2020 and December 31, 2019 (fair value accounting): September 30, 2020 December 31, 2019 (Dollars in thousands) Amount Ownership % Amount Ownership % Strategic Investors Fund, LP $ 4,646 12.6 % $ 5,729 12.6 % Capital Preferred Return Fund, LP 39,246 20.0 45,341 20.0 Growth Partners, LP 30,267 33.0 35,976 33.0 CP I, LP 134 10.7 134 10.7 Total consolidated venture capital and private equity fund investments $ 74,293 $ 87,180 (2) The carrying value represents investments in 179 and 205 funds (primarily venture capital funds) at September 30, 2020 and December 31, 2019, respectively, where our ownership interest is typically less than 5% of the voting interests of each such fund and in which we do not have the ability to exercise significant influence over the partnerships operating activities and financial policies. We carry our unconsolidated venture capital and private equity fund investments at fair value based on the fund investments' net asset values per share as obtained from the general partners of the investments. For each fund investment, we adjust the net asset value per share for differences between our measurement date and the date of the fund investment’s net asset value by using the most recently available financial information from the investee general partner, for example June 30 th for our September 30 th consolidated financial statements, adjusted for any contributions paid, distributions received from the investment, and significant fund transactions or market events during the reporting period. (3) These investments include direct equity investments in private companies. The carrying value is based on the price at which the investment was acquired plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments. We consider a range of factors when adjusting the fair value of these investments, including, but not limited to, the term and nature of the investment, local market conditions, values for comparable securities, current and projected operating performance, exit strategies, financing transactions subsequent to the acquisition of the investment and a discount for certain investments that have lock-up restrictions or other features that indicate a discount to fair value is warranted. The following table shows the changes to the carrying amount of other investments without a readily determinable fair value for the nine months ended September 30, 2020: (Dollars in thousands) Nine months ended September 30, 2020 Cumulative Adjustments Measurement alternative: Carrying value at September 30, 2020 $ 56,008 Carrying value adjustments: Impairment $ (487) $ (947) Upward changes for observable prices 1,438 2,236 Downward changes for observable prices (6,210) (8,918) (4) Investments classified as other equity securities (fair value accounting) represent shares held in public companies as a result of exercising public equity warrant assets and direct equity investments in public companies held by our consolidated funds. Changes in equity securities measured at fair value are recognized through net income. This amount includes total unrealized gains of $108.4 million in BigCommerce Holdings, Inc. ("BigCommerce") which is currently subject to a lock-up agreement. (5) The following table shows the carrying value and our ownership percentage of each investment at September 30, 2020 and December 31, 2019 (equity method accounting): September 30, 2020 December 31, 2019 (Dollars in thousands) Amount Ownership % Amount Ownership % Venture capital and private equity fund investments: Strategic Investors Fund II, LP $ 3,519 8.6 % $ 3,612 8.6 % Strategic Investors Fund III, LP 14,984 5.9 15,668 5.9 Strategic Investors Fund IV, LP 25,451 5.0 27,064 5.0 Strategic Investors Fund V funds 52,575 Various 46,830 Various CP II, LP (i) 4,773 5.1 5,907 5.1 Other venture capital and private equity fund investments 173,419 Various 116,286 Various Total venture capital and private equity fund investments $ 274,721 $ 215,367 Debt funds: Gold Hill Capital 2008, LP (ii) $ 5,317 15.5 % $ 5,525 15.5 % Other debt funds 1,601 Various 1,746 Various Total debt funds $ 6,918 $ 7,271 Other investments: SPD Silicon Valley Bank Co., Ltd. $ 107,969 50.0 % $ 74,190 50.0 % Other investments 84,807 Various 78,673 Various Total other investments $ 192,776 $ 152,863 (i) Our ownership includes direct ownership interest of 1.3 percent and indirect ownership interest of 3.8 percent through our investments in Strategic Investors Fund II, LP. (ii) Our ownership includes direct ownership interest of 11.5 percent in the fund and an indirect interest in the fund through our investment in Gold Hill Capital 2008, LLC of 4.0 percent. (6) The following table presents the balances of our investments in qualified affordable housing projects and related unfunded commitments included as a component of “Other liabilities” on our consolidated balance sheets at September 30, 2020 and December 31, 2019: (Dollars in thousands) September 30, 2020 December 31, 2019 Investments in qualified affordable housing projects, net $ 560,983 $ 458,476 Other liabilities 332,031 302,031 The following table presents other information relating to our investments in qualified affordable housing projects for the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Tax credits and other tax benefits recognized $ 15,290 $ 8,705 $ 46,772 $ 28,950 Amortization expense included in provision for income taxes (i) 10,222 6,042 32,081 20,436 (i) All investments are amortized using the proportional amortization method and amortization expense is included in the provision for income taxes.
Gain Loss On Investment Securities	The following table presents the net gains and losses on non-marketable and other equity securities for the three and nine months ended September 30, 2020 and 2019 as recorded in the line item “Gains on investment securities, net," a component of noninterest income: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Net gains (losses) on non-marketable and other equity securities: Non-marketable securities (fair value accounting): Consolidated venture capital and private equity fund investments $ 8,778 $ 4,555 $ 13,168 $ 22,674 Unconsolidated venture capital and private equity fund investments 16,400 8,530 15,187 26,688 Other investments without a readily determinable fair value 217 (471) (3,619) 4,701 Other equity securities in public companies (fair value accounting) 112,615 (11,979) 118,099 106 Non-marketable securities (equity method accounting): Venture capital and private equity fund investments 51,334 29,049 69,681 54,189 Debt funds 15 187 (253) 1,529 Other investments 478 (22) (2,668) 593 Total net gains on non-marketable and other equity securities $ 189,837 $ 29,849 $ 209,595 $ 110,480 Less: realized net gains on sales of non-marketable and other equity securities 5,262 277 5,477 12,637 Net gains on non-marketable and other equity securities still held $ 184,575 $ 29,572 $ 204,118 $ 97,843

Loans, Allowance for Loan Los_2

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments (Tables)	9 Months Ended
	Sep. 30, 2020
Receivables [Abstract]
Loans and Allowance for Loan Losses	The composition of loans at amortized cost basis broken out by risk-based segment at September 30, 2020 and December 31, 2019 is presented in the following table: (Dollars in thousands) September 30, 2020 December 31, 2019 Global fund banking $ 19,584,518 $ 17,696,794 Investor dependent: Early stage 1,470,941 1,624,221 Mid stage 1,626,794 1,047,398 Later stage 2,013,934 1,663,576 Total investor dependent 5,111,669 4,335,195 Cash flow dependent: Sponsor led buyout 2,062,243 2,185,497 Other 2,600,157 2,238,741 Total cash flow dependent 4,662,400 4,424,238 Private bank (1) (5) 4,424,899 3,492,269 Balance sheet dependent 1,698,220 1,286,153 Premium wine (1) (5) 1,081,963 1,062,264 Other (1) (5) 48,206 867,723 SBA loans 1,802,016 — Total loans (2) (3) (4) $ 38,413,891 $ 33,164,636 Allowance for credit losses (512,958) (304,924) Net loans $ 37,900,933 $ 32,859,712 (1) As of September 30, 2020, as a result of enhanced portfolio characteristic definitions for our risk-based segments, loans in the amount of $411.2 million and $50.3 million that would have been reported in Other under historical definitions, are now being reported in our Private Bank and Premium Wine risk-based segments, respectively. (2) Total loans at amortized cost is net of unearned income of $222 million and $163 million at September 30, 2020 and December 31, 2019, respectively. (3) Included within our total loan portfolio are credit card loans of $329 million and $395 million at September 30, 2020 and December 31, 2019, respectively. (4) Included within our total loan portfolio are construction loans of $118 million and $183 million at September 30, 2020 and December 31, 2019, respectively. (5) Of our total loans, the table below includes those secured by real estate at amortized cost at September 30, 2020 and December 31, 2019 and were comprised of the following: (Dollars in thousands) September 30, 2020 December 31, 2019 Real estate secured loans: Private bank: Loans for personal residence $ 3,179,148 $ 2,829,880 Loans to eligible employees 449,551 401,396 Home equity lines of credit 50,929 55,461 Other 137,320 38,880 Total private bank loans secured by real estate $ 3,816,948 $ 3,325,617 Premium wine 831,182 820,730 Other 60,501 — Total real estate secured loans $ 4,708,631 $ 4,146,347
Composition of Loans, Net of Unearned Income, Broken Out by Portfolio Segment and Class of Financing Receivable	The following table summarizes the credit quality indicators, broken out by risk-based segment, as of September 30, 2020 and December 31, 2019: (Dollars in thousands) Pass Criticized Nonperforming (Nonaccrual) Total September 30, 2020: Global fund banking $ 19,576,723 $ 7,782 $ 13 $ 19,584,518 Investor dependent: Early stage 1,296,789 154,420 19,732 1,470,941 Mid stage 1,449,525 165,642 11,627 1,626,794 Later stage 1,795,229 180,130 38,575 2,013,934 Total investor dependent 4,541,543 500,192 69,934 5,111,669 Cash flow dependent: Sponsor led buyout 1,827,943 212,708 21,592 2,062,243 Other 2,314,453 279,419 6,285 2,600,157 Total cash flow dependent 4,142,396 492,127 27,877 4,662,400 Private bank 4,395,531 23,936 5,432 4,424,899 Balance sheet dependent 1,565,597 131,947 676 1,698,220 Premium wine 941,511 138,777 1,675 1,081,963 Other 48,041 61 104 48,206 SBA loans 1,663,383 138,633 — 1,802,016 Total loans (1) $ 36,874,725 $ 1,433,455 $ 105,711 $ 38,413,891 December 31, 2019: Global fund banking $ 17,708,550 $ 4,247 $ — $ 17,712,797 Investor dependent Early stage 1,436,022 206,310 11,093 1,653,425 Mid stage 924,002 125,451 17,330 1,066,783 Later stage 1,490,561 201,819 6,296 1,698,676 Total investor dependent 3,850,585 533,580 34,719 4,418,884 Cash flow dependent Sponsor led buyout 2,039,847 118,588 44,585 2,203,020 Other 2,141,766 93,400 17,681 2,252,847 Total cash flow dependent 4,181,613 211,988 62,266 4,455,867 Private bank 3,472,138 11,601 5,480 3,489,219 Balance sheet dependent 1,231,961 65,343 — 1,297,304 Premium wine 1,026,973 36,335 204 1,063,512 Other 890,059 62 — 890,121 Total loans (1) $ 32,361,879 $ 863,156 $ 102,669 $ 33,327,704 (1) As of September 30, 2020, loan amounts are disclosed using the amortized cost basis as a result of the adoption of CECL. Prior period loan amounts are disclosed using the gross basis.
Credit Quality Indicators, Broken out by Portfolio Segment and Class of Financing Receivables	The following table summarizes the credit quality indicators, broken out by risk-based segment and vintage year, as of September 30, 2020: Term Loans by Origination Year (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Global fund banking: Risk rating: Pass $ 271,164 $ 156,714 $ 70,084 $ 36,907 $ 2,552 $ 11,588 $ 19,022,934 $ 4,780 $ 19,576,723 Criticized 8 — — — — — 994 6,780 7,782 Nonperforming — 8 — — — — 5 — 13 Total global fund banking $ 271,172 $ 156,722 $ 70,084 $ 36,907 $ 2,552 $ 11,588 $ 19,023,933 $ 11,560 $ 19,584,518 Investor dependent: Early stage: Risk rating: Pass $ 589,224 $ 452,550 $ 140,448 $ 37,911 $ 2,430 $ 390 $ 73,199 $ 637 $ 1,296,789 Criticized 20,744 68,381 36,841 10,878 2,530 363 13,750 933 154,420 Nonperforming 2,466 8,870 6,956 463 — 4 973 — 19,732 Total early stage $ 612,434 $ 529,801 $ 184,245 $ 49,252 $ 4,960 $ 757 $ 87,922 $ 1,570 $ 1,470,941 Mid stage: Risk rating: Pass $ 726,708 $ 344,458 $ 209,372 $ 39,603 $ 7,510 $ 2,725 $ 116,655 $ 2,494 $ 1,449,525 Criticized 59,623 43,386 32,668 12,725 1,966 — 15,274 — 165,642 Nonperforming 2 2,558 5,405 3,519 — — 143 — 11,627 Total mid stage $ 786,333 $ 390,402 $ 247,445 $ 55,847 $ 9,476 $ 2,725 $ 132,072 $ 2,494 $ 1,626,794 Later stage: Risk rating: Pass $ 790,085 $ 473,800 $ 178,768 $ 60,009 $ 562 $ 9,110 $ 277,911 $ 4,984 $ 1,795,229 Criticized 17,108 72,028 30,280 2,666 — 8,708 49,340 — 180,130 Nonperforming 17,506 1,886 12,434 — — — 6,749 — 38,575 Total later stage $ 824,699 $ 547,714 $ 221,482 $ 62,675 $ 562 $ 17,818 $ 334,000 $ 4,984 $ 2,013,934 Total investor dependent $ 2,223,466 $ 1,467,917 $ 653,172 $ 167,774 $ 14,998 $ 21,300 $ 553,994 $ 9,048 $ 5,111,669 Cash flow dependent: Sponsor led buyout: Risk rating: Pass $ 534,579 $ 601,938 $ 326,172 $ 226,326 $ 50,267 $ — $ 88,661 $ — $ 1,827,943 Criticized 43,221 70,050 53,043 21,400 12,238 — 12,756 — 212,708 Nonperforming 33 11,907 — 7,200 — — 2,452 — 21,592 Total sponsor led buyout $ 577,833 $ 683,895 $ 379,215 $ 254,926 $ 62,505 $ — $ 103,869 $ — $ 2,062,243 Other Risk rating: Pass $ 465,243 $ 574,231 $ 189,501 $ 116,918 $ 39,627 $ 346 $ 928,587 $ — $ 2,314,453 Criticized 9,589 55,118 74,916 956 416 — 138,424 — 279,419 Nonperforming — — 3,845 — — — 2,440 — 6,285 Total other $ 474,832 $ 629,349 $ 268,262 $ 117,874 $ 40,043 $ 346 $ 1,069,451 $ — $ 2,600,157 Total cash flow dependent $ 1,052,665 $ 1,313,244 $ 647,477 $ 372,800 $ 102,548 $ 346 $ 1,173,320 $ — $ 4,662,400 Private bank: Risk rating: Pass $ 1,191,024 $ 1,212,000 $ 420,440 $ 397,847 $ 342,594 $ 463,198 $ 368,107 $ 321 $ 4,395,531 Criticized 1,456 5,549 3,040 1,201 5,101 6,802 787 — 23,936 Nonperforming — 520 2,475 — — 1,702 735 — 5,432 Total private bank $ 1,192,480 $ 1,218,069 $ 425,955 $ 399,048 $ 347,695 $ 471,702 $ 369,629 $ 321 $ 4,424,899 Balance sheet dependent: Risk rating: Pass $ 374,768 $ 202,185 $ 237,529 $ 31,838 $ — $ — $ 717,771 $ 1,506 $ 1,565,597 Criticized 60,238 8,877 5,559 610 — — 56,663 — 131,947 Nonperforming — — — — — 675 1 — 676 Total balance sheet dependent $ 435,006 $ 211,062 $ 243,088 $ 32,448 $ — $ 675 $ 774,435 $ 1,506 $ 1,698,220 Premium wine: Risk rating: Pass $ 154,624 $ 181,416 $ 70,297 $ 84,221 $ 102,297 $ 156,397 $ 154,685 $ 37,574 $ 941,511 Criticized 14,001 26,446 35,898 338 13,674 8,210 40,210 — 138,777 Nonperforming — — — — 1,662 — 13 — 1,675 Total Premium wine $ 168,625 $ 207,862 $ 106,195 $ 84,559 $ 117,633 $ 164,607 $ 194,908 $ 37,574 $ 1,081,963 Other: Risk rating: Pass $ 1,474 $ 23,286 $ 13,092 $ 1,900 $ — $ 80 $ 8,209 $ — $ 48,041 Criticized 22 — — — — — 39 — 61 Nonperforming — 104 — — — — — — 104 Total other $ 1,496 $ 23,390 $ 13,092 $ 1,900 $ — $ 80 $ 8,248 $ — $ 48,206 SBA loans: Risk rating: Pass $ 1,663,383 $ — $ — $ — $ — $ — $ — $ — $ 1,663,383 Criticized 138,633 — — — — — — — 138,633 Nonperforming — — — — — — — — — Total SBA loans $ 1,802,016 $ — $ — $ — $ — $ — $ — $ — $ 1,802,016 Total loans $ 7,146,926 $ 4,598,266 $ 2,159,063 $ 1,095,436 $ 585,426 $ 670,298 $ 22,098,467 $ 60,009 $ 38,413,891
Activity in Allowance for Loan Losses Broken out by Portfolio Segment	The following tables summarize the activity relating to our allowance for credit losses for loans for the three and nine months ended September 30, 2020 and 2019, broken out by risk-based segment: Three months ended September 30, 2020 Beginning Balance June 30, 2020 Charge-offs Recoveries (Reduction) Provision for Credit Losses Foreign Currency Translation Adjustments Ending Balance September 30, 2020 (Dollars in thousands) Global fund banking $ 53,723 $ — $ — $ (14,734) $ — $ 38,989 Investor dependent: Early stage 148,270 (14,950) 2,511 (33,171) (101) 102,559 Mid stage 56,393 (7,162) 697 12,578 (88) 62,418 Later stage 87,604 (6,205) 600 15,792 (80) 97,711 Total investor dependent 292,267 (28,317) 3,808 (4,801) (269) 262,688 Cash flow dependent: Sponsor led buyout 54,853 (130) — (3,062) — 51,661 Other 43,100 — — (2,779) — 40,321 Total cash flow dependent 97,953 (130) — (5,841) — 91,982 Private bank 91,345 — 15 (14,881) — 76,479 Balance sheet dependent 24,728 — — 4,341 — 29,069 Premium wine 12,319 — — (1,914) — 10,405 Other 13,635 (2) 531 (14,898) 1,600 866 SBA loans 3,858 — — (1,378) — 2,480 Total allowance for credit losses $ 589,828 $ (28,449) $ 4,354 $ (54,106) $ 1,331 $ 512,958 Three months ended September 30, 2019 Beginning Balance June 30, 2019 Charge-offs Recoveries Provision for (Reduction) Credit Losses Foreign Currency Translation Adjustments Ending Balance September 30, 2019 (Dollars in thousands) Global fund banking $ 101,253 $ — $ 1,200 $ 1,485 $ (22) $ 103,916 Investor dependent: Early stage 30,969 (7,524) 1,760 5,783 (85) 30,903 Mid stage 28,264 (16,581) 385 5,778 (85) 17,761 Later stage 37,940 (11,449) 276 17,513 (259) 44,021 Total investor dependent 97,173 (35,554) 2,421 29,074 (429) 92,685 Cash flow dependent: Sponsor led buyout 32,131 — — 9,663 (143) 41,651 Other 24,551 — 250 (3,199) 47 21,649 Total cash flow dependent 56,682 — 250 6,464 (96) 63,300 Private Bank 20,397 — 15 1,307 (19) 21,700 Balance sheet dependent 17,256 — — (2,496) 37 14,797 Premium wine 4,227 — — 27 — 4,254 Other 4,900 (1,266) 2 124 (2) 3,758 Total allowance for credit losses $ 301,888 $ (36,820) $ 3,888 $ 35,985 $ (531) $ 304,410 Nine months ended September 30, 2020 Beginning Balance December 31, 2019 Impact of adopting ASC 326 Charge-offs Recoveries Provision for (Reduction) Credit Losses Foreign Currency Translation Adjustments Ending Balance September 30, 2020 (Dollars in thousands) Global fund banking $ 107,285 $ (69,888) $ — $ — $ 1,772 $ (180) $ 38,989 Investor dependent: Early stage 26,245 39,911 (26,897) 6,474 57,494 (668) 102,559 Mid stage 15,936 6,963 (20,147) 5,303 54,584 (221) 62,418 Later stage 40,189 24,750 (20,189) 600 52,880 (519) 97,711 Total investor dependent 82,370 71,624 (67,233) 12,377 164,958 (1,408) 262,688 Cash flow dependent: Sponsor led buyout 42,939 3,151 (2,754) 2,845 5,613 (133) 51,661 Other 25,159 (3,056) (3,385) 1 21,727 (125) 40,321 Total cash flow dependent 68,098 95 (6,139) 2,846 27,340 (258) 91,982 Private bank 21,551 12,615 (1,616) 15 44,194 (280) 76,479 Balance sheet dependent 12,722 (1,364) (4,900) — 22,685 (74) 29,069 Premium wine 5,296 3,650 (192) — 1,691 (40) 10,405 Other 7,602 8,732 (320) 944 (18,426) 2,334 866 SBA loans — — — — 2,480 — 2,480 Total allowance for credit losses $ 304,924 $ 25,464 $ (80,400) $ 16,182 $ 246,694 $ 94 $ 512,958 Nine months ended September 30, 2019 Beginning Balance December 31, 2018 Charge-offs Recoveries Provision for (Reduction) Credit Losses Foreign Currency Translation Adjustments Ending Balance September 30, 2019 (Dollars in thousands) Global fund banking $ 93,781 $ (2,047) $ 1,200 $ 11,304 $ (322) $ 103,916 Investor dependent: Early stage 25,885 (16,819) 5,685 16,547 (395) 30,903 Mid stage 20,999 (36,492) 1,288 31,443 523 17,761 Later stage 25,217 (11,449) 2,053 28,616 (416) 44,021 Total investor dependent 72,101 (64,760) 9,026 76,606 (288) 92,685 Cash flow dependent: Sponsor led buyout 44,274 (2,402) — (253) 32 41,651 Other 21,754 (716) 4,647 (4,083) 47 21,649 Total cash flow dependent 66,028 (3,118) 4,647 (4,336) 79 63,300 Private Bank 20,583 (1,019) 240 1,999 (103) 21,700 Balance sheet dependent 21,707 — — (7,135) 225 14,797 Premium wine 3,646 — — 611 (3) 4,254 Other 3,057 (1,311) 20 1,905 87 3,758 Total allowance for credit losses $ 280,903 $ (72,255) $ 15,133 $ 80,954 $ (325) $ 304,410 The following table summarizes the activity relating to our allowance for credit losses for unfunded credit commitments for the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Allowance for credit losses: unfunded credit commitments, beginning balance $ 99,294 $ 62,664 $ 67,656 $ 55,183 Impact of adopting ASC 326 — — 22,826 — Provision for credit losses 2,019 551 11,132 8,079 Foreign currency translation adjustments 202 (107) (99) (154) Allowance for credit losses: unfunded credit commitments, ending balance (1) $ 101,515 $ 63,108 $ 101,515 $ 63,108 (1) The “allowance for credit losses: unfunded credit commitments” is included as a component of “other liabilities” on our unaudited interim consolidated balance sheets. See Note 15 — “Off-Balance Sheet Arrangements, Guarantees and Other Commitments” of the “Notes to Interim Consolidated Financial Statements (unaudited)” under Part I, Item 1 of this report for additional disclosures related to our commitments to extend credit.
Financing Receivable, Past Due	The following table summarizes the aging of our loans broken out by risk-based segment as of September 30, 2020 and December 31, 2019: (Dollars in thousands) 30 - 59 60 - 89 Equal to or Greater Total Past Current Total Loans Past Due September 30, 2020: Global fund banking $ 6,285 $ — $ 14 $ 6,299 $ 19,578,219 $ 19,584,518 $ — Investor dependent: Early stage 605 323 367 1,295 1,469,646 1,470,941 — Mid stage 250 145 211 606 1,626,188 1,626,794 — Later stage 51 — — 51 2,013,883 2,013,934 — Total investor dependent 906 468 578 1,952 5,109,717 5,111,669 — Cash flow dependent: Sponsor led buyout — — — — 2,062,243 2,062,243 — Other 742 3 — 745 2,599,412 2,600,157 — Total cash flow dependent 742 3 — 745 4,661,655 4,662,400 — Private bank 4 4 — 8 4,424,891 4,424,899 — Balance sheet dependent 2,851 7 — 2,858 1,695,362 1,698,220 — Premium wine 3,117 4,355 — 7,472 1,074,491 1,081,963 — Other 23 — 155 178 48,028 48,206 — SBA loans — — — — 1,802,016 1,802,016 — Total loans (1) $ 13,928 $ 4,837 $ 747 $ 19,512 $ 38,394,379 $ 38,413,891 $ — December 31, 2019: Global fund banking $ 97,739 $ 383 $ 3,150 $ 101,272 $ 17,611,525 $ 17,712,797 $ 3,150 Investor dependent: Early stage 1,307 22,062 723 24,092 1,629,333 1,653,425 — Mid stage 10,025 6,999 — 17,024 1,049,759 1,066,783 — Later stage 8,113 500 10,569 19,182 1,679,494 1,698,676 — Total investor dependent 19,445 29,561 11,292 60,298 4,358,586 4,418,884 — Cash flow dependent Sponsor led buyout — — — — 2,203,020 2,203,020 — Other 2,426 3,061 2 5,489 2,247,358 2,252,847 — Total cash flow dependent 2,426 3,061 2 5,489 4,450,378 4,455,867 — Private bank 6,582 2,049 1,544 10,175 3,479,044 3,489,219 365 Balance sheet dependent 2,731 — — 2,731 1,294,573 1,297,304 — Premium wine 8,435 3,170 — 11,605 1,051,907 1,063,512 — Other 17 — — 17 890,104 890,121 — Total loans (1) $ 137,375 $ 38,224 $ 15,988 $ 191,587 $ 33,136,117 $ 33,327,704 $ 3,515 (1) As of September 30, 2020, loan amounts are disclosed using the amortized cost basis as a result of the adoption of CECL. Prior period loan amounts are disclosed using the gross basis.
Financing Receivable, Nonaccrual	The following tables summarize our nonaccrual loan activity by risk-based segment for the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, 2020 Beginning Balance June 30, 2020 Additions Paydowns and Other Reductions Charge-offs Ending Balance September 30, 2020 (Dollars in thousands) Global fund banking $ 9 $ 6 $ (2) $ — $ 13 Investor dependent: Early stage 24,422 6,269 (2,790) (8,169) 19,732 Mid stage 8,119 10,290 (292) (6,490) 11,627 Later stage 10,498 36,779 (3,500) (5,202) 38,575 Total investor dependent 43,039 53,338 (6,582) (19,861) 69,934 Cash flow dependent: Sponsor led buyout 21,658 172 (238) — 21,592 Other 5,317 12,356 (11,388) — 6,285 Total cash flow dependent 26,975 12,528 (11,626) — 27,877 Private bank 6,517 3,348 (4,433) — 5,432 Balance sheet dependent 11,842 675 (11,841) — 676 Premium wine 1,681 — (6) — 1,675 Other 61 105 (62) — 104 SBA loans 4,202 — (4,202) — — Total nonaccrual loans $ 94,326 $ 70,000 $ (38,754) $ (19,861) $ 105,711 Three months ended September 30, 2019 Beginning Balance June 30, 2019 Additions Paydowns and Other Reductions Charge-offs Ending Balance September 30, 2019 (Dollars in thousands) Global fund banking $ — $ — $ — $ — $ — Investor dependent: Early stage 10,290 12,409 (2,172) (1,569) 18,958 Mid stage 28,699 6 (8,151) (15,323) 5,231 Later stage 38,346 2,216 (6,462) (6,837) 27,263 Total investor dependent 77,335 14,631 (16,785) (23,729) 51,452 Cash flow dependent: Sponsor led buyout 8,365 37,294 (640) — 45,019 Other 79 13 — — 92 Total cash flow dependent 8,444 37,307 (640) — 45,111 Private bank 5,644 1,531 (86) — 7,089 Balance sheet dependent 4,974 — (4,974) — — Premium wine 244 174 (25) — 393 Other — — — — — Total nonaccrual loans (1) $ 96,641 $ 53,643 $ (22,510) $ (23,729) $ 104,045 Nine months ended September 30, 2020 Beginning Balance December 31, 2019 Additions Paydowns and Other Reductions Charge-offs Ending Balance September 30, 2020 (Dollars in thousands) Global fund banking $ — $ 15 $ (2) $ — $ 13 Investor dependent: Early stage 11,093 28,218 (8,695) (10,884) 19,732 Mid stage 17,330 22,875 (1,079) (27,499) 11,627 Later stage 6,296 48,962 (8,276) (8,407) 38,575 Total investor dependent 34,719 100,055 (18,050) (46,790) 69,934 Cash flow dependent: Sponsor led buyout 44,585 21,830 (42,199) (2,624) 21,592 Other 17,681 20,936 (32,314) (18) 6,285 Total cash flow dependent 62,266 42,766 (74,513) (2,642) 27,877 Private bank 5,480 5,982 (5,449) (581) 5,432 Balance sheet dependent — 17,417 (16,741) — 676 Premium wine 204 1,686 (23) (192) 1,675 Other — 339 (235) — 104 SBA loans — 4,202 (4,202) — — Total nonaccrual loans (1) $ 102,669 $ 172,462 $ (119,215) $ (50,205) $ 105,711 Nine months ended September 30, 2019 Beginning Balance December 31, 2018 Additions Paydowns and Other Reductions Charge-offs Ending Balance September 30, 2019 (Dollars in thousands) Global fund banking $ 3,700 $ 2,247 $ (3,900) $ (2,047) $ — Investor dependent: Early stage 7,616 25,221 (10,615) (3,264) 18,958 Mid stage 4,751 42,497 (9,541) (32,476) 5,231 Later stage 11,385 32,786 (10,071) (6,837) 27,263 Total investor dependent 23,752 100,504 (30,227) (42,577) 51,452 Cash flow dependent: Sponsor led buyout 39,534 37,294 (29,407) (2,402) 45,019 Other 17,156 92 (16,690) (466) 92 Total cash flow dependent 56,690 37,386 (46,097) (2,868) 45,111 Private bank 3,919 3,411 (174) (67) 7,089 Balance sheet dependent 5,004 238 (5,242) — — Premium wine 285 174 (66) — 393 Other 792 — (792) — — Total nonaccrual loans (1) $ 94,142 $ 143,960 $ (86,498) $ (47,559) $ 104,045 (1) For the three and nine months ended September 30, 2020, loan amounts are disclosed using the amortized cost basis as a result of the adoption of CECL. Prior period loan amounts are disclosed using the gross basis. The following table summarizes our nonaccrual loans with no allowance for credit loss at September 30, 2020 and December 31, 2019: September 30, 2020 December 31, 2019 (Dollars in thousands) Nonaccrual Loans Nonaccrual Loans with no Allowance for Credit Loss Nonaccrual Loans Nonaccrual Loans with no Allowance for Credit Loss Global fund banking $ 13 $ 8 $ — $ — Investor dependent: Early stage 19,732 10 11,093 460 Mid stage 11,627 — 17,330 274 Later stage 38,575 — 6,296 — Total investor dependent 69,934 10 34,719 734 Cash flow dependent: Sponsor led buyout 21,592 — 44,585 — Other 6,285 705 17,681 2,782 Total cash flow dependent 27,877 705 62,266 2,782 Private bank 5,432 4,912 5,480 3,714 Balance sheet dependent 676 — — — Premium wine 1,675 998 204 — Other 104 104 — — SBA loans — — — — Total nonaccrual loans (1) $ 105,711 $ 6,737 $ 102,669 $ 7,230 (1) As of September 30, 2020, loan amounts are disclosed using the amortized cost basis as a result of the adoption of CECL. Prior period loan amounts are disclosed using the gross basis.
Summary of Loans Modified in Troubled Debt Restructurings ("TDRs") by Portfolio Segment and Class of Financing Receivables	The following table summarizes our loans modified in TDRs, broken out by risk-based segment, at September 30, 2020 and December 31, 2019: (Dollars in thousands) September 30, 2020 December 31, 2019 Loans modified in TDRs: Global fund banking $ — $ — Investor dependent: Early stage 7,771 9,471 Mid stage 3,781 5,189 Later stage 3,297 23,318 Total investor dependent 14,849 37,978 Cash flow dependent: Sponsor led buyout 30,799 55,443 Other 855 — Total cash flow dependent 31,654 55,443 Private bank — 2,104 Balance sheet dependent 675 — Premium wine 3,341 13,457 Other — — SBA loans — — Total loans modified in TDRs (1) $ 50,519 $ 108,982 (1) As of September 30, 2020, loan amounts are disclosed using the amortized cost basis as a result of the adoption of CECL. Prior period loan amounts are disclosed using the gross basis.
Recorded Investment in Loans Modified in TDRs	The following table summarizes the recorded investment in loans modified in TDRs, broken out by risk-based segment, for modifications made during the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Loans modified in TDRs during the period: Global fund banking $ — $ — $ — $ — Investor dependent: Early stage 4,043 2,205 4,193 2,205 Mid stage — — 209 3,480 Later stage — 6,361 3,297 17,324 Total investor dependent 4,043 8,566 7,699 23,009 Cash flow dependent: Sponsor led buyout 21,611 — 21,611 48,604 Other — — 855 — Total cash flow dependent 21,611 — 22,466 48,604 Private bank — — — 1,826 Balance sheet dependent 675 — 675 — Premium wine — — 998 — Other — — — — SBA loans — — — — Total loans modified in TDRs during the period (1) (2) $ 26,329 $ 8,566 $ 31,838 $ 73,439 (1) For the three and nine months ended September 30, 2020, loan amounts are disclosed using the amortized cost basis as a result of the adoption of CECL. Prior period loan amounts are disclosed using the gross basis. (2) There were $13.6 million and $31.1 million of partial charge-offs for the three and nine months ended September 30, 2020, respectively, and $3.7 million and $9.2 million of partial charge-offs for the three and nine months ended September 30, 2019.
Troubled Debt Restructurings On Financing Receivables Subsequently Defaulted Table	The following table summarizes the recorded investment in loans modified in TDRs within the previous 12 months that subsequently defaulted during the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 TDRs modified within the previous 12 months that defaulted during the period: Global fund banking $ — $ — $ — $ — Investor dependent: Early stage — — — — Mid stage — — — — Later stage — 10,963 — 10,963 Total investor dependent — 10,963 — 10,963 Cash flow dependent: Sponsor led buyout — 37,294 — 37,294 Other — — — — Total cash flow dependent — 37,294 — 37,294 Private bank — — — — Balance sheet dependent — — — — Premium wine 998 — 998 — Other — — — — SBA loans — — — — Total TDRs modified within the previous 12 months that defaulted in the period (1) $ 998 $ 48,257 $ 998 $ 48,257 (1) For the three and nine months ended September 30, 2020, loan amounts are disclosed using the amortized cost basis as a result of the adoption of CECL. Prior period loan amounts are disclosed using the gross basis.

Leases (Tables)

Leases (Tables)	9 Months Ended
Leases (Tables)	Sep. 30, 2020
Leases [Abstract]
Schedule of Lease Assets and Liabilities	Total recorded balances for the lease assets and liabilities are as follows: (Dollars in thousands) September 30, 2020 December 31, 2019 Assets: Right-of-use assets - operating leases $ 220,493 $ 197,365 Liabilities: Lease liabilities - operating leases 246,652 218,847
Lease Expense Components	The components of our lease cost and supplemental cash flow information related to leases for the three and nine months ended September 30, 2020 and 2019 were as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Operating lease cost $ 11,998 $ 10,120 $ 35,040 $ 29,099 Short-term lease cost 333 370 1,092 1,214 Variable lease cost 830 903 2,548 2,683 Less: sublease income (346) (1,140) (1,633) (3,363) Total lease cost, net $ 12,815 $ 10,253 $ 37,047 $ 29,633 Supplemental cash flows information: Cash paid for amounts included in the measurement of lease liabilities: Cash paid for operating leases $ 12,273 $ 11,514 $ 36,753 $ 32,752 Noncash items during the period: Lease obligations in exchange for obtaining Right-of-use assets: Operating leases $ 14,741 $ 7,770 $ 55,316 $ 7,770 The table below presents additional information related to the Company's leases as of September 30, 2020 and December 31, 2019: September 30, 2020 December 31, 2019 Weighted-average remaining term (in years) - operating leases 6.13 6.29 Weighted-average discount rate - operating leases (1) 2.54 % 2.92 % (1) The incremental borrowing rate used to calculate the lease liability was determined based on the facts and circumstances of the economic environment and the Company’s credit standing as of the effective date of ASC 842. Additionally, the total lease term and total lease payments were also considered in determining the rate. Based on these considerations the Company identified credit terms available under its existing credit lines which represent a collateralized borrowing rate that has varying credit terms that could be matched to total lease terms and total lease payments in ultimately determining the implied borrowing rate in each lease contract.
Lessee, Operating Lease, Liability, Maturity	The following table presents our undiscounted future cash payments for our operating lease liabilities as of September 30, 2020: Years ended December 31, Operating Leases 2020 (excluding the nine months ended September 30, 2020) $ 12,782 2021 50,271 2022 45,430 2023 44,337 2024 38,437 2025 and thereafter 75,799 Total future lease payments (1) $ 267,056 Less: imputed interest (20,404) Total lease liabilities $ 246,652

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
Goodwill and Other Intangible Assets (Tables)	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination	The components of net other intangible assets related to the acquisition of SVB Leerink were as follows: September 30, 2020 December 31, 2019 (Dollars in thousands) Gross Amount Accumulated Amortization Net Carrying Amount Gross Amount Accumulated Amortization Net Carrying Amount Other intangible assets: Customer relationships $ 42,000 $ 6,682 $ 35,318 $ 42,000 $ 3,818 $ 38,182 Other 18,900 8,838 10,062 18,900 7,665 11,235 Total other intangible assets $ 60,900 $ 15,520 $ 45,380 $ 60,900 $ 11,483 $ 49,417
Finite-lived Intangible Assets Amortization Expense	For the nine months ended September 30, 2020, we recorded amortization expense of $4.0 million. Assuming no future impairments of other intangible assets or additional acquisitions or dispositions, the following table presents the Company's future expected amortization expense for other intangible assets that will continue to be amortized as of September 30, 2020: Years ended December 31, Other 2020 (excluding the nine months ended September 30, 2020) $ 1,345 2021 4,732 2022 4,732 2023 4,732 2024 4,732 2025 and thereafter 25,107 Total future amortization expense $ 45,380

Short-Term Borrowings and Lon_2

Short-Term Borrowings and Long-Term Debt (Tables)	9 Months Ended
Short-Term Borrowings and Long-Term Debt (Tables)	Sep. 30, 2020
Debt Disclosure [Abstract]
Outstanding Short Term Borrowings and Long Term Debt	The following table represents outstanding short-term borrowings and long-term debt at September 30, 2020 and December 31, 2019: Carrying Value (Dollars in thousands) Maturity Principal value at September 30, 2020 September 30, December 31, Short-term borrowings: Other short-term borrowings (1) $ 19,068 $ 19,068 17,430 Total short-term borrowings $ 19,068 $ 17,430 Long-term debt: 3.50% Senior Notes January 29, 2025 $ 350,000 $ 348,257 $ 347,987 3.125% Senior Notes June 5, 2030 500,000 495,173 — Total long-term debt $ 843,430 $ 347,987 (1) Represents cash collateral received from certain counterparties in relation to market value exposures of derivative contracts in our favor.

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
Derivative Financial Instruments (Tables)	Sep. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Total Notional or Contractual Amounts, Fair Value, Collateral and Net Exposure of Derivative Financial Instruments	The total notional or contractual amounts and fair value of our derivative financial instruments at September 30, 2020 and December 31, 2019 were as follows: September 30, 2020 December 31, 2019 Notional or Fair Value Notional or Fair Value (Dollars in thousands) Derivative Assets (1) Derivative Liabilities (1) Derivative Assets (1) Derivative Liabilities (1) Derivatives designated as hedging instruments: Interest rate risks: Interest rate swaps $ — $ — $ — $ 1,915,000 $ 22,676 $ — Interest rate swaps — — — 3,085,000 — 25,623 Derivatives not designated as hedging instruments: Currency exchange risks: Foreign exchange forwards 462,765 4,083 — — — — Foreign exchange forwards 59,992 — 278 300,250 — 2,154 Other derivative instruments: Equity warrant assets 256,774 202,184 — 225,893 165,473 — Client foreign exchange forwards 6,955,487 138,522 — 4,661,517 114,546 — Client foreign exchange forwards 5,754,213 — 108,959 4,326,059 — 94,745 Client foreign currency options 111,107 2,986 — 154,985 1,308 — Client foreign currency options 111,107 — 2,986 154,985 — 1,308 Client interest rate derivatives 916,573 79,270 — 1,275,190 28,811 — Client interest rate derivatives (2) 1,048,715 — 25,558 1,372,914 — 14,154 Total derivatives not designated as hedging instruments 427,045 137,781 310,138 112,361 Total derivatives $ 427,045 $ 137,781 $ 332,814 $ 137,984 (1) Derivative assets and liabilities are included in "accrued interest receivable and other assets" and "other liabilities " , respectively, on our consolidated balance sheets. (2) The amount reported reflects reductions of approximately $59.2 million and $17.4 million of derivative liabilities at September 30, 2020 and December 31, 2019, respectively, reflecting variation margin treated as settlement of the related derivative fair values for legal and accounting purposes as required by central clearing houses.
Summary of Derivative Activity and Related Impact on Consolidated Statements of Income	A summary of our derivative activity and the related impact on our consolidated statements of income for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) Statement of income location 2020 2019 2020 2019 Derivatives designated as hedging instruments: Interest rate risks: Amounts reclassified from accumulated other comprehensive income into income Interest income - loans $ 16,004 $ (2,713) $ 33,924 $ (3,224) Derivatives not designated as hedging instruments: Currency exchange risks: Gains (losses) on revaluations of internal foreign currency instruments, net Other noninterest income $ 17,085 $ (8,724) $ 20,138 $ (5,183) (Losses) gains on internal foreign exchange forward contracts, net Other noninterest income (19,344) 8,660 (20,010) 4,917 Net (losses) gains associated with internal currency risk $ (2,259) $ (64) $ 128 $ (266) Other derivative instruments: Gains (losses) on revaluations of client foreign currency instruments, net Other noninterest income $ 71 $ (2,181) $ (3,302) $ (14,793) Gains on client foreign exchange forward contracts, net Other noninterest income 1,641 2,167 2,582 15,232 Net gains (losses) associated with client currency risk $ 1,712 $ (14) $ (720) $ 439 Net gains on equity warrant assets Gains on equity warrant assets, net $ 53,766 $ 37,561 $ 93,667 $ 107,213 Net gains (losses) on other derivatives Other noninterest income $ 31,151 $ (1,123) $ 26,533 $ (2,619)
Offsetting Assets	The following table summarizes our assets subject to enforceable master netting arrangements as of September 30, 2020 and December 31, 2019: Gross Amounts of Recognized Assets Gross Amounts offset in the Statement of Financial Position Net Amounts of Assets Presented in the Statement of Financial Position Gross Amounts Not Offset in the Statement of Financial Position but Subject to Master Netting Arrangements Net Amount (Dollars in thousands) Financial Instruments Cash Collateral Received (1) September 30, 2020 Derivative assets: Interest rate swaps $ — $ — $ — $ — $ — $ — Foreign exchange forwards 142,605 — 142,605 (56,584) (19,049) 66,972 Foreign currency options 2,986 — 2,986 (2,323) (19) 644 Client interest rate derivatives 79,270 — 79,270 (79,270) — — Total derivative assets 224,861 — 224,861 (138,177) (19,068) 67,616 Reverse repurchase, securities borrowing, and similar arrangements 450,164 — 450,164 (450,164) — — Total $ 675,025 $ — $ 675,025 $ (588,341) $ (19,068) $ 67,616 December 31, 2019 Derivative assets: Interest rate swaps $ 22,676 $ — $ 22,676 $ (22,598) $ — $ 78 Foreign exchange forwards 114,546 — 114,546 (36,855) (17,095) 60,596 Foreign currency options 1,308 — 1,308 (848) (335) 125 Client interest rate derivatives 28,811 — 28,811 (28,811) — — Total derivative assets 167,341 — 167,341 (89,112) (17,430) 60,799 Reverse repurchase, securities borrowing, and similar arrangements 289,340 — 289,340 (289,340) — — Total $ 456,681 $ — $ 456,681 $ (378,452) $ (17,430) $ 60,799 (1) Cash collateral received from our counterparties in relation to market value exposures of derivative contracts in our favor is recorded as a component of “short-term borrowings” on our consolidated balance sheets.
Offsetting Liabilities	The following table summarizes our liabilities subject to enforceable master netting arrangements as of September 30, 2020 and December 31, 2019: Gross Amounts of Recognized Liabilities Gross Amounts offset in the Statement of Financial Position Net Amounts of Liabilities Presented in the Statement of Financial Position Gross Amounts Not Offset in the Statement of Financial Position but Subject to Master Netting Arrangements Net Amount (Dollars in thousands) Financial Instruments Cash Collateral Pledged (1) September 30, 2020 Derivative liabilities: Interest rate swaps $ — $ — $ — $ — $ — $ — Foreign exchange forwards 109,237 — 109,237 (49,862) (12,918) 46,457 Foreign currency options 2,986 — 2,986 (644) — 2,342 Client interest rate derivatives 25,558 — 25,558 — (24,898) 660 Total derivative liabilities 137,781 — 137,781 (50,506) (37,816) 49,459 Repurchase, securities lending, and similar arrangements — — — — — — Total $ 137,781 $ — $ 137,781 $ (50,506) $ (37,816) $ 49,459 December 31, 2019 Derivative liabilities: Interest rate swaps $ 25,623 $ — $ 25,623 $ (22,676) $ (2,947) $ — Foreign exchange forwards 96,899 — 96,899 (33,314) (22,030) 41,555 Foreign currency options 1,308 — 1,308 (531) — 777 Client interest rate derivatives 14,154 — 14,154 — (13,936) 218 Total derivative liabilities 137,984 — 137,984 (56,521) (38,913) 42,550 Repurchase, securities lending, and similar arrangements — — — — — — Total $ 137,984 $ — $ 137,984 $ (56,521) $ (38,913) $ 42,550 (1) Cash collateral pledged to our counterparties in relation to market value exposures of derivative contracts in a liability position and repurchase agreements are recorded as a component of “cash and cash equivalents " on our consolidated balance sheets.

Noninterest Income (Tables)

Noninterest Income (Tables)	9 Months Ended
Noninterest Income (Tables)	Sep. 30, 2020
Other Income and Expenses [Abstract]
Summary of Noninterest Income	Included below is a summary of noninterest income for the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Noninterest income: Gains on investment securities, net $ 189,837 $ 29,849 $ 270,760 $ 106,575 Gains on equity warrant assets, net 53,766 37,561 93,667 107,213 Client investment fees 31,914 46,679 107,192 136,905 Foreign exchange fees 43,881 40,309 127,642 116,863 Credit card fees 22,756 30,158 72,348 86,431 Deposit service charges 22,015 22,482 67,115 65,496 Lending related fees 13,562 11,707 37,851 36,857 Letters of credit and standby letters of credit fees 12,192 10,842 35,155 31,205 Investment banking revenue 92,181 38,516 280,551 137,005 Commissions 16,257 12,275 49,197 40,812 Other 49,222 13,631 76,887 42,773 Total noninterest income $ 547,583 $ 294,009 $ 1,218,365 $ 908,135
Components of Gains and Losses (Realized and Unrealized) on Investment Securities	A summary of gains and losses on investment securities for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Gains on non-marketable and other equity securities, net $ 189,837 $ 29,849 $ 209,595 $ 110,480 Gains (losses) on sales of available-for-sale securities, net — — 61,165 (3,905) Total gains on investment securities, net $ 189,837 $ 29,849 $ 270,760 $ 106,575
Components of Gains on Equity Warrant Assets	A summary of net gains on equity warrant assets for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Equity warrant assets: Gains on exercises, net $ 23,940 $ 30,047 $ 59,370 $ 90,357 Terminations (361) (481) (1,332) (2,931) Changes in fair value, net 30,187 7,995 35,629 19,787 Total net gains on equity warrant assets $ 53,766 $ 37,561 $ 93,667 $ 107,213
Components of Asset Management Fees	A summary of client investment fees by instrument type for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Client investment fees by type: Sweep money market fees $ 18,155 $ 26,202 $ 60,617 $ 79,698 Asset management fees (1) 12,172 7,256 32,905 20,883 Repurchase agreement fees 1,587 13,221 13,670 36,324 Total client investment fees (2) $ 31,914 $ 46,679 $ 107,192 $ 136,905 (1) Represents fees earned from investments in third-party money market mutual funds and fixed-income securities managed by SVB Asset Management. (2) Represents fees earned on client investment funds that are maintained at third-party financial institutions and are not recorded on our balance sheet.
Components of Foreign Exchange Fees	A summary of foreign exchange fee income by instrument type for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Foreign exchange fees by instrument type: Spot contract commissions $ 38,794 $ 36,836 $ 112,821 $ 106,561 Forward contract commissions 4,613 3,371 14,004 10,144 Option premium fees 474 102 817 158 Total foreign exchange fees $ 43,881 $ 40,309 $ 127,642 $ 116,863
Components of Credit Card Fees	A summary of credit card fees by instrument type for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Credit card fees by instrument type: Card interchange fees, net $ 18,168 $ 24,560 $ 55,257 $ 68,808 Merchant service fees 3,670 3,943 13,727 12,763 Card service fees 918 1,655 3,364 4,860 Total credit card fees $ 22,756 $ 30,158 $ 72,348 $ 86,431
Components of Lending Related Fees	A summary of lending related fees by instrument type for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Lending related fees by instrument type: Unused commitment fees $ 9,872 $ 8,339 $ 26,602 $ 25,060 Other 3,690 3,368 11,249 11,797 Total lending related fees $ 13,562 $ 11,707 $ 37,851 $ 36,857
Schedule of Investment Banking Revenue	A summary of investment banking revenue by instrument type for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Investment banking revenue: Underwriting fees $ 85,009 $ 31,016 $ 247,384 $ 109,371 Advisory fees 1,761 5,200 26,170 22,789 Private placements and other 5,411 2,300 6,997 4,845 Total investment banking revenue $ 92,181 $ 38,516 $ 280,551 $ 137,005
Summary of Other Noninterest Income	A summary of other noninterest income by instrument type for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Other noninterest income by instrument type: Fund management fees $ 9,669 $ 8,493 $ 26,422 $ 24,292 Net (losses) gains on revaluation of foreign currency instruments, net of foreign exchange forward contracts (1) (547) (78) (592) 173 Gains from conversion of convertible debt options 30,018 — 30,018 — Other service revenue 10,082 5,216 21,039 18,308 Total other noninterest income $ 49,222 $ 13,631 $ 76,887 $ 42,773 (1) Represents the net revaluation of client and internal foreign currency denominated financial instruments. We enter into foreign exchange forward contracts to economically reduce our foreign exchange exposure related to client and internal foreign currency denominated financial instruments.
Disaggregation of Revenue	The following tables present our revenues from contracts with customers disaggregated by revenue source and segment for the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, 2020 Global SVB Private SVB Capital (2) SVB Other Items Total Revenue from contracts with customers: Client investment fees $ 31,132 $ 782 $ — $ — $ — $ 31,914 Spot contract commissions 38,546 108 — — 140 38,794 Card interchange fees, gross 29,255 5 — — 287 29,547 Merchant service fees 3,670 — — — — 3,670 Deposit service charges 21,914 20 — — 81 22,015 Investment banking revenue — — — 92,181 — 92,181 Commissions — — — 16,257 — 16,257 Fund management fees — — 8,239 1,430 — 9,669 Performance fees — — 1,613 — — 1,613 Correspondent bank rebates 1,377 — — — — 1,377 Total revenue from contracts with customers $ 125,894 $ 915 $ 9,852 $ 109,868 $ 508 $ 247,037 Revenues outside the scope of ASC 606 (1) 21,700 1 50,528 3,783 224,534 300,546 Total noninterest income $ 147,594 $ 916 $ 60,380 $ 113,651 $ 225,042 $ 547,583 (1) Amounts are accounted for under separate guidance than ASC 606. (2) Global Commercial Bank’s, SVB Capital’s and SVB Leerink's components of noninterest income are shown net of noncontrolling interests. Noncontrolling interest is included within “Other Items." Three months ended September 30, 2019 Global SVB Private SVB Capital (2) SVB Other Items Total Revenue from contracts with customers: Client investment fees $ 46,171 $ 508 $ — $ — $ — $ 46,679 Spot contract commissions 36,644 89 — — 103 36,836 Card interchange fees, gross 34,867 — — — 181 35,048 Merchant service fees 3,943 — — — — 3,943 Deposit service charges 22,263 36 — — 183 22,482 Investment banking revenue — — — 38,516 — 38,516 Commissions — — — 12,275 — 12,275 Fund management fees — — 7,063 1,430 — 8,493 Correspondent bank rebates 1,633 — — — — 1,633 Total revenue from contracts with customers $ 145,521 $ 633 $ 7,063 $ 52,221 $ 467 $ 205,905 Revenues outside the scope of ASC 606 (1) 15,508 1 27,892 726 43,977 88,104 Total noninterest income $ 161,029 $ 634 $ 34,955 $ 52,947 $ 44,444 $ 294,009 (1) Amounts are accounted for under separate guidance than ASC 606. (2) Global Commercial Bank’s and SVB Capital’s components of noninterest income are shown net of noncontrolling interests. Noncontrolling interest is included within “Other Items." Nine months ended September 30, 2020 Global SVB Private SVB Capital (2) SVB Other Items Total Revenue from contracts with customers: Client investment fees $ 105,176 $ 2,016 $ — $ — $ — $ 107,192 Spot contract commissions 112,086 367 — — 368 112,821 Card interchange fees, gross 90,909 17 — — 1,144 92,070 Merchant service fees 13,727 — — — — 13,727 Deposit service charges 66,612 60 — — 443 67,115 Investment banking revenue — — — 280,551 — 280,551 Commissions — — — 49,197 — 49,197 Fund management fees — — 22,132 4,290 — 26,422 Performance fees — — 3,601 — — 3,601 Correspondent bank rebates 4,151 — — — — 4,151 Total revenue from contracts with customers $ 392,661 $ 2,460 $ 25,733 $ 334,038 $ 1,955 $ 756,847 Revenues outside the scope of ASC 606 (1) 55,241 26 61,015 6,107 339,129 461,518 Total noninterest income $ 447,902 $ 2,486 $ 86,748 $ 340,145 $ 341,084 $ 1,218,365 (1) Amounts are accounted for under separate guidance than ASC 606. (2) Global Commercial Bank’s, SVB Capital’s and SVB Leerink's components of noninterest income are shown net of noncontrolling interests. Noncontrolling interest is included within “Other Items." Nine months ended September 30, 2019 Global SVB Private SVB Capital (2) SVB Other Items Total Revenue from contracts with customers: Client investment fees $ 135,551 $ 1,354 $ — $ — $ — $ 136,905 Spot contract commissions 105,877 376 — — 308 106,561 Card interchange fees, gross 115,468 — — — 518 115,986 Merchant service fees 12,764 — — — — 12,764 Deposit service charges 64,806 104 — — 586 65,496 Investment banking revenue — — — 137,005 — 137,005 Commissions — — — 40,812 — 40,812 Fund management fees — — 20,050 4,242 — 24,292 Correspondent bank rebates 4,712 — — — — 4,712 Total revenue from contracts with customers $ 439,178 $ 1,834 $ 20,050 $ 182,059 $ 1,412 $ 644,533 Revenues outside the scope of ASC 606 (1) 32,314 (5) 79,810 6,005 145,478 263,602 Total noninterest income $ 471,492 $ 1,829 $ 99,860 $ 188,064 $ 146,890 $ 908,135 (1) Amounts are accounted for under separate guidance than ASC 606. (2) Global Commercial Bank’s, SVB Capital’s and SVB Leerink's components of noninterest income are shown net of noncontrolling interests. Noncontrolling interest is included within “Other Items."

Other Noninterest Expense (Tabl

Other Noninterest Expense (Tables)	9 Months Ended
Other Noninterest Expense (Tables)	Sep. 30, 2020
Other Income and Expenses [Abstract]
Summary of Other Noninterest Expense	A summary of other noninterest expense for the three and nine months ended September 30, 2020 and 2019 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Lending and other client related processing costs $ 7,194 $ 7,502 $ 23,155 $ 21,442 Correspondent bank fees 3,581 3,657 11,400 10,970 Investment banking activities 2,835 1,864 13,633 9,918 Trade order execution costs 2,806 2,615 8,165 7,959 Data processing services 3,984 3,066 10,945 8,624 Telephone 2,342 2,466 6,458 7,629 Dues and publications 1,159 1,055 3,199 3,439 Postage and supplies 538 720 2,117 2,168 Other 13,114 11,161 38,831 32,910 Total other noninterest expense $ 37,553 $ 34,106 $ 117,903 $ 105,059

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
Segment Reporting (Tables)	Sep. 30, 2020
Segment Reporting [Abstract]
Segment Reporting	Our segment information for the three and nine months ended September 30, 2020 and 2019 is as follows: (Dollars in thousands) Global SVB Private SVB Capital (1) SVB Other Items (2) Total Three months ended September 30, 2020 Net interest income (loss) $ 512,963 $ 19,145 $ 2 $ 175 $ (4,545) $ 527,740 Reduction (provision for) credit losses 37,847 14,881 — — (710) 52,018 Noninterest income 147,594 916 60,380 113,651 225,042 547,583 Noninterest expense (3) (258,035) (12,293) (11,198) (77,567) (131,928) (491,021) Income before income tax expense (4) $ 440,369 $ 22,649 $ 49,184 $ 36,259 $ 87,859 $ 636,320 Total average loans, amortized cost $ 30,763,715 $ 4,263,324 $ — $ — $ 2,291,561 $ 37,318,600 Total average assets (5) (6) 77,802,730 4,297,011 413,882 605,263 5,229,480 88,348,366 Total average deposits 74,825,725 2,163,903 — — 690,388 77,680,016 Three months ended September 30, 2019 Net interest income $ 455,161 $ 12,772 $ 9 $ 277 $ 52,425 $ 520,644 Provision for credit losses (34,075) (1,910) — — (551) (36,536) Noninterest income 161,029 634 34,955 52,947 44,444 294,009 Noninterest expense (3) (213,786) (11,638) (8,129) (55,200) (102,571) (391,324) Income (loss) before income tax expense (4) $ 368,329 $ (142) $ 26,835 $ (1,976) $ (6,253) $ 386,793 Total average loans, amortized cost $ 25,839,647 $ 3,400,889 $ — $ — $ 581,890 $ 29,822,426 Total average assets (5) (6) (8) 58,384,473 3,431,313 396,031 428,848 2,687,083 65,327,748 Total average deposits 55,250,154 1,497,303 — — 487,512 57,234,969 Nine months ended September 30, 2020 Net interest income $ 1,461,768 $ 52,952 $ 28 $ 373 $ 49,683 $ 1,564,804 Provision for credit losses (200,020) (44,194) — — (13,729) (257,943) Noninterest income 447,902 2,486 86,748 340,145 341,084 1,218,365 Noninterest expense (3) (724,233) (32,547) (28,040) (248,254) (337,168) (1,370,242) Income (loss) before income tax expense (4) $ 985,417 $ (21,303) $ 58,736 $ 92,264 $ 39,870 $ 1,154,984 Total average loans, net of unearned income $ 30,126,870 $ 4,053,018 $ — $ — $ 1,656,039 $ 35,835,927 Total average assets (5) (6) 69,212,733 4,087,786 430,391 514,836 5,514,904 79,760,650 Total average deposits 66,408,359 2,069,196 — — 688,509 69,166,064 Nine months ended September 30, 2019 Net interest income $ 1,360,997 $ 37,200 $ 20 $ 961 $ 163,755 $ 1,562,933 Provision for credit losses (79,175) (1,779) — — (8,079) (89,033) Noninterest income 471,492 1,829 99,860 188,064 146,890 908,135 Noninterest expense (3) (617,933) (30,015) (21,794) (177,675) (293,093) (1,140,510) Income before income tax expense (4) $ 1,135,381 $ 7,235 $ 78,086 $ 11,350 $ 9,473 $ 1,241,525 Total average loans, net of unearned income $ 25,457,997 $ 3,235,943 $ — $ — $ 517,020 $ 29,210,960 Total average assets (5) (6) 54,196,976 3,264,071 382,707 380,290 2,990,088 61,214,132 Total average deposits 51,352,644 1,461,170 — — 517,530 53,331,344 (1) Global Commercial Bank’s, SVB Capital’s and SVB Leerink's components of net interest income, noninterest income, noninterest expense and total average assets are shown net of noncontrolling interests for all periods presented. Noncontrolling interest is included within “Other Items." (2) The “Other Items” column reflects the adjustments necessary to reconcile the results of the operating segments to the consolidated financial statements prepared in conformity with GAAP. Net interest income consists primarily of interest earned from our fixed income investment portfolio, net of FTP. Noninterest income consists primarily of gains or losses on equity warrant assets, gains or losses on the sale of AFS securities and gains or losses on equity securities from exercised warrant assets. Noninterest expense consists primarily of expenses associated with corporate support functions such as finance, human resources, marketing, legal and other expenses. (3) The Global Commercial Bank segment includes direct depreciation and amortization of $6.4 million and $5.1 million for the three months ended September 30, 2020 and 2019, respectively, and $17.7 million and $14.8 million for the nine months ended September 30, 2020 and 2019. (4) The internal reporting model used by management to assess segment performance does not calculate income tax expense by segment. Our effective tax rate is a reasonable approximation of the segment rates. (5) Total average assets equal the greater of total average assets or the sum of total average liabilities and total average stockholders' equity for each segment to reconcile the results to the consolidated financial statements prepared in conformity with GAAP.

Off-Balance Sheet Arrangement_2

Off-Balance Sheet Arrangements, Guarantees and Other Commitments (Tables)	9 Months Ended
	Sep. 30, 2020
Disclosure Off Balance Sheet Arrangements Guarantees And Other Commitments Additional Information [Abstract]
Summary Information Related to Commitments to Extend Credit (Excluding Letters of Credit)	The following table summarizes information related to our commitments to extend credit at September 30, 2020 and December 31, 2019: (Dollars in thousands) September 30, 2020 December 31, 2019 Loan commitments available for funding: (1) Fixed interest rate commitments $ 2,474,804 $ 2,434,042 Variable interest rate commitments 24,796,923 19,309,317 Total loan commitments available for funding 27,271,727 21,743,359 Commercial and standby letters of credit (2) 3,058,069 2,778,561 Total unfunded credit commitments $ 30,329,796 $ 24,521,920 Commitments unavailable for funding (3) $ 2,519,517 $ 3,051,075 Allowance for unfunded credit commitments (4) 101,515 67,656 (1) Represents commitments which are available for funding, due to clients meeting all collateral, compliance and financial covenants required under loan commitment agreements. (2) See below for additional information on our commercial and standby letters of credit. (3) Represents commitments which are currently unavailable for funding due to clients failing to meet all collateral, compliance and financial covenants under loan commitment agreements. (4) Our allowance for credit losses for unfunded credit commitments includes an allowance for both our unfunded loan commitments and our letters of credit.
Summary of Commercial and Standby Letters of Credit	The table below summarizes our commercial and standby letters of credit at September 30, 2020. The maximum potential amount of future payments represents the amount that could be remitted under letters of credit if there were a total default by the guaranteed parties, without consideration of possible recoveries under recourse provisions or from the collateral held or pledged. (Dollars in thousands) Expires in One Expires After Total Amount Maximum Amount Financial standby letters of credit $ 2,838,280 $ 90,452 $ 2,928,732 $ 2,928,732 Performance standby letters of credit 109,224 18,057 127,281 127,281 Commercial letters of credit 2,056 — 2,056 2,056 Total $ 2,949,560 $ 108,509 $ 3,058,069 $ 3,058,069
Total Capital Commitments, Unfunded Capital Commitments, and Ownership in Each Fund	The following table details our total capital commitments, unfunded capital commitments, and our ownership percentage in each fund at September 30, 2020: (Dollars in thousands) SVBFG Capital Commitments SVBFG Unfunded SVBFG Ownership CP I, LP $ 6,000 $ 270 10.7 % CP II, LP (1) 1,200 162 5.1 Capital Preferred Return Fund, LP 12,688 — 20.0 Growth Partners, LP 24,670 1,340 33.0 Strategic Investors Fund, LP 15,300 688 12.6 Strategic Investors Fund II, LP 15,000 1,050 8.6 Strategic Investors Fund III, LP 15,000 1,275 5.9 Strategic Investors Fund IV, LP 12,239 2,325 5.0 Strategic Investors Fund V funds 515 131 Various Other venture capital and private equity fund investments (equity method accounting) 25,197 6,258 Various Debt funds (equity method accounting) 58,733 240 Various Other fund investments (2) 278,339 5,614 Various Total $ 464,881 $ 19,353 (1) Our ownership includes direct ownership of 1.3 percent and indirect ownership interest of 3.8 percent through our investment in Strategic Investors Fund II, LP. (2) Represents commitments to 185 funds (primarily venture capital funds) where our ownership interest is generally less than five percent of the voting interests of each such fund. (3) We are subject to the Volcker Rule, which restricts investments in “covered funds”. Under revised regulations that became effective on October 1, 2020, venture capital and credit funds that meet certain criteria will no longer be considered covered funds. We believe that, as a result of these changes, we will not be required to sell or otherwise conform certain of our fund investments. See the “Volcker Rule” section under Part I, Item 2 of this report for additional details.
Remaining Unfunded Commitments to Venture Capital or Private Equity Funds by Consolidated Managed Funds	The following table details the amounts of remaining unfunded commitments to venture capital and private equity funds by our consolidated managed funds of funds (including our interest and the noncontrolling interests) at September 30, 2020: (Dollars in thousands) Unfunded Commitments Strategic Investors Fund, LP $ 376 Capital Preferred Return Fund, LP 1,517 Growth Partners, LP 2,513 Total $ 4,406

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	9 Months Ended
Fair Value of Financial Instruments (Tables)	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Fair Value Hierarchy Tables Present Information about Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following fair value hierarchy table presents information about our assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2020: (Dollars in thousands) Level 1 Level 2 Level 3 Balance at September 30, 2020 Assets: Available-for-sale securities: U.S. Treasury securities $ 4,547,294 $ — $ — $ 4,547,294 U.S. agency debentures — 152,526 — 152,526 Foreign government debt securities 23,449 — — 23,449 Residential mortgage-backed securities: Agency-issued mortgage-backed securities — 9,770,313 — 9,770,313 Agency-issued collateralized mortgage obligations — fixed rate — 7,315,973 — 7,315,973 Agency-issued commercial mortgage-backed securities — 4,094,769 — 4,094,769 Total available-for-sale securities 4,570,743 21,333,581 — 25,904,324 Non-marketable and other equity securities (fair value accounting): Non-marketable securities: Venture capital and private equity fund investments measured at net asset value — — — 226,526 Venture capital and private equity fund investments not measured at net asset value (1) — — 134 134 Other equity securities in public companies 26,205 203,092 — 229,297 Total non-marketable and other equity securities (fair value accounting) 26,205 203,092 134 455,957 Other assets: Foreign exchange forward and option contracts — 145,591 — 145,591 Equity warrant assets — 9,501 192,683 202,184 Client interest rate derivatives — 79,270 — 79,270 Total assets $ 4,596,948 $ 21,771,035 $ 192,817 $ 26,787,326 Liabilities: Foreign exchange forward and option contracts $ — $ 112,223 $ — $ 112,223 Client interest rate derivatives — 25,558 — 25,558 Total liabilities $ — $ 137,781 $ — $ 137,781 (1) Included in Level 3 assets is $120 thousand attributable to noncontrolling interests calculated based on the ownership percentages of the noncontrolling interests. The following fair value hierarchy table presents information about our assets and liabilities that are measured at fair value on a recurring basis as of December 31, 2019: (Dollars in thousands) Level 1 Level 2 Level 3 Balance at December 31, 2019 Assets: Available-for-sale securities: U.S. Treasury securities $ 6,894,010 $ — $ — $ 6,894,010 U.S. agency debentures — 99,547 — 99,547 Foreign government debt securities 9,038 — — 9,038 Residential mortgage-backed securities: Agency-issued mortgage-backed securities — 4,148,791 — 4,148,791 Agency-issued collateralized mortgage obligations—fixed rate — 1,538,343 — 1,538,343 Agency-issued commercial mortgage-backed securities — 1,325,190 — 1,325,190 Total available-for-sale securities 6,903,048 7,111,871 — 14,014,919 Non-marketable and other equity securities (fair value accounting): Non-marketable securities: Venture capital and private equity fund investments measured at net asset value — — — 265,263 Venture capital and private equity fund investments not measured at net asset value (1) — — 134 134 Other equity securities in public companies 17,290 41,910 — 59,200 Total non-marketable and other equity securities (fair value accounting) 17,290 41,910 134 324,597 Other assets: Foreign exchange forward and option contracts — 115,854 — 115,854 Equity warrant assets — 4,435 161,038 165,473 Interest rate swaps — 22,676 — 22,676 Client interest rate derivatives — 28,811 — 28,811 Total assets $ 6,920,338 $ 7,325,557 $ 161,172 $ 14,672,330 Liabilities: Foreign exchange forward and option contracts $ — $ 98,207 $ — $ 98,207 Interest rate swaps — 25,623 — 25,623 Client interest rate derivatives — 14,154 — 14,154 Total liabilities $ — $ 137,984 $ — $ 137,984 (1) Included in Level 3 assets is $120 thousand attributable to noncontrolling interests calculated based on the ownership percentages of the noncontrolling interests.
Additional Information about Level 3 Assets Measured at Fair Value on a Recurring Basis	The following table presents additional information about Level 3 assets measured at fair value on a recurring basis for the three and nine months ended September 30, 2020 and 2019: (Dollars in thousands) Beginning Balance Total Net Gains Included in Purchases Sales/Exits Issuances Distributions and Other Settlements Transfers Out of Level 3 Ending Balance Three months ended September 30, 2020 Non-marketable and other equity securities (fair value accounting): Venture capital and private equity fund investments not measured at net asset value (1) $ 134 $ — $ — $ — $ — $ — $ — $ 134 Other assets: Equity warrant assets (2) 165,225 52,537 — (28,760) 4,605 — (924) 192,683 Total assets $ 165,359 $ 52,537 $ — $ (28,760) $ 4,605 $ — $ (924) $ 192,817 Three months ended September 30, 2019 Non-marketable and other equity securities (fair value accounting): Venture capital and private equity fund investments not measured at net asset value (1) $ 441 $ 57 $ — $ (364) $ — $ — $ — $ 134 Other assets: Equity warrant assets (2) 147,770 39,527 — (45,270) 4,130 — (1,116) 145,041 Total assets $ 148,211 $ 39,584 $ — $ (45,634) $ 4,130 $ — $ (1,116) $ 145,175 Nine months ended September 30, 2020 Non-marketable and other equity securities (fair value accounting): Venture capital and private equity fund investments not measured at net asset value (1) $ 134 $ 5 $ — $ (5) $ — $ — $ — $ 134 Other assets: Equity warrant assets (2) 161,038 91,224 — (74,110) 15,894 — (1,363) 192,683 Total assets $ 161,172 $ 91,229 $ — $ (74,115) $ 15,894 $ — $ (1,363) $ 192,817 Nine months ended September 30, 2019 Non-marketable and other equity securities (fair value accounting): Venture capital and private equity fund investments not measured at net asset value (1) $ 1,079 $ 12 $ — $ (960) $ — $ 3 $ — $ 134 Other assets: Equity warrant assets (2) 145,199 105,338 575 (113,143) 11,714 — (4,642) 145,041 Total assets $ 146,278 $ 105,350 $ 575 $ (114,103) $ 11,714 $ 3 $ (4,642) $ 145,175 (1) Realized and unrealized gains (losses) are recorded in the line item “Gains on investment securities, net," a component of noninterest income. (2) Realized and unrealized gains (losses) are recorded in the line item “Gains on equity warrant assets, net," a component of noninterest income.
Unrealized Gains Included in Earnings Attributable to Level 3 Assets Held	The following table presents the amount of net unrealized gains and losses included in earnings (which is inclusive of noncontrolling interest) attributable to Level 3 assets still held at September 30, 2020 and 2019: Three months ended September 30, Nine months ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Non-marketable and other equity securities (fair value accounting): Venture capital and private equity fund investments not measured at net asset value (1) $ — $ 57 $ — $ 12 Other assets: Equity warrant assets (2) 26,360 (727) 33,469 21,041 Total unrealized gains (losses) , net $ 26,360 $ (670) $ 33,469 $ 21,053 Unrealized losses attributable to noncontrolling interests (1) $ — $ (158) $ — $ (199) (1) Unrealized gains (losses) are recorded in the line item “Gains on investment securities, net, " a component of noninterest income. (2) Unrealized gains (losses) are recorded in the line item “Gains on equity warrant assets, net, " a component of noninterest income.
Quantitative Information About Significant Unobservable Inputs	The following table presents quantitative information about the significant unobservable inputs used for certain of our Level 3 fair value measurements at September 30, 2020 and December 31, 2019. We have not included in this table our venture capital and private equity fund investments (fair value accounting) as we use net asset value per share (as obtained from the general partners of the investments) as a practical expedient to determine fair value. (Dollars in thousands) Fair value Valuation Technique Significant Unobservable Inputs Input Range Weighted September 30, 2020: Venture capital and private equity fund investments (fair value accounting) $ 134 Private company equity pricing (1) (1) (1) Equity warrant assets (public portfolio) 1,166 Black-Scholes option pricing model Volatility 45.1% - 56.8% 51.9 % Risk-Free interest rate 0.3- 0.7 0.6 Sales restrictions discount (2) 10.0 - 20.0 15.9 Equity warrant assets (private portfolio) 191,517 Black-Scholes option pricing model Volatility 23.9 - 56.8 43.6 Risk-Free interest rate 0.01 - 0.69 0.2 Marketability discount (3) 22.1 22.1 Remaining life assumption (4) 45.0 45.0 December 31, 2019: Venture capital and private equity fund investments (fair value accounting) $ 134 Private company equity pricing (1) (1) (1) Equity warrant assets (public portfolio) 346 Black-Scholes option pricing model Volatility 39.2% - 54.8% 50.7 % Risk-Free interest rate 1.9 1.9 Sales restrictions discount (2) 10.0 - 20.0 13.6 Equity warrant assets (private portfolio) 160,692 Black-Scholes option pricing model Volatility 23.6 - 54.8 38.2 Risk-Free interest rate 0.5 - 1.9 1.6 Marketability discount (3) 17.5 17.5 Remaining life assumption (4) 45.0 45.0 (1) In determining the fair value of our venture capital and private equity fund investment portfolio (not measured at net asset value), we evaluate a variety of factors related to each underlying private portfolio company including, but not limited to, actual and forecasted results, cash position, recent or planned transactions and market comparable companies. Additionally, we have ongoing communication with the portfolio companies and venture capital fund managers, to determine whether there is a material change in fair value. We use company provided valuation reports, if available, to support our valuation assumptions. These factors are specific to each portfolio company and a weighted average or range of values of the unobservable inputs is not meaningful. (2) We adjust quoted market prices of public companies, which are subject to certain sales restrictions. Sales restriction discounts generally range from 10 percent to 20 percent depending on the duration of the sales restrictions, which typically range from three (3) Our marketability discount is applied to all private company warrants to account for a general lack of liquidity due to the private nature of the associated underlying company. The quantitative measure used is based upon various option-pricing models. On a quarterly basis, a sensitivity analysis is performed on our marketability discount.
Summary of Estimated Fair Values of Financial Instruments Not Carried at Fair Value	The following fair value hierarchy table presents the estimated fair values of our financial instruments that are not carried at fair value at September 30, 2020 and December 31, 2019: Estimated Fair Value (Dollars in thousands) Carrying Amount Total Level 1 Level 2 Level 3 September 30, 2020: Financial assets: Cash and cash equivalents $ 15,687,776 $ 15,687,776 $ 15,687,776 $ — $ — Held-to-maturity securities 12,982,223 13,612,463 — 13,612,463 — Non-marketable securities not measured at net asset value 228,564 228,564 — — 228,564 Non-marketable securities measured at net asset value 293,269 293,269 — — — Net commercial loans 33,552,513 34,091,696 — — 34,091,696 Net consumer loans 4,348,420 4,418,614 — — 4,418,614 FHLB and Federal Reserve Bank stock 61,232 61,232 — — 61,232 Financial liabilities: Short-term borrowings 19,068 19,068 — 19,068 — Non-maturity deposits (1) 84,438,332 84,438,332 84,438,332 — — Time deposits 334,687 273,785 — 273,785 — 3.50% Senior Notes 348,257 378,606 — 378,606 — 3.125% Senior Notes 495,173 557,495 — 557,495 — Off-balance sheet financial assets: Commitments to extend credit — 34,126 — — 34,126 December 31, 2019: Financial assets: Cash and cash equivalents $ 6,781,783 $ 6,781,783 $ 6,781,783 $ — $ — Held-to-maturity securities 13,842,946 14,115,272 — 14,115,272 — Non-marketable securities not measured at net asset value 195,405 195,405 — — 195,405 Non-marketable securities measured at net asset value 235,351 235,351 — — — Net commercial loans 29,104,532 29,615,176 — — 29,615,176 Net consumer loans 3,755,180 3,820,804 — — 3,820,804 FHLB and Federal Reserve Bank stock 60,258 60,258 — — 60,258 Financial liabilities: Short-term borrowings 17,430 17,430 — 17,430 — Non-maturity deposits (1) 61,569,714 61,569,714 61,569,714 — — Time deposits 188,093 187,980 — 187,980 — 3.50% Senior Notes 347,987 366,856 — 366,856 — Off-balance sheet financial assets: Commitments to extend credit — 27,197 — — 27,197 (1) Includes noninterest-bearing demand deposits, interest-bearing checking accounts, money market accounts and interest-bearing sweep deposits.
Summary of Estimated Fair Values of Investments and Remaining Unfunded Commitments for Each Major Category of Investments	The following table is a summary of the estimated fair values of these investments and remaining unfunded commitments for each major category of these investments as of September 30, 2020: (Dollars in thousands) Carrying Amount Fair Value Unfunded Commitments Non-marketable securities (fair value accounting): Venture capital and private equity fund investments (1) $ 226,524 $ 226,524 $ 9,133 Non-marketable securities (equity method accounting): Venture capital and private equity fund investments (2) 274,721 274,721 11,201 Debt funds (2) 6,918 6,918 240 Other investments (2) 11,629 11,629 886 Total $ 519,792 $ 519,792 $ 21,460 (1) Venture capital and private equity fund investments within non-marketable securities (fair value accounting) include investments made by our managed funds of funds and one of our direct venture funds (consolidated VIEs) and investments in venture capital and private equity fund investments (unconsolidated VIEs). Collectively, these investments in venture capital and private equity funds are primarily in U.S. and global technology and life science/healthcare companies. Included in the fair value and unfunded commitments of fund investments under fair value accounting are $55.0 million and $3.2 million, respectively, attributable to noncontrolling interests. It is estimated that we will receive distributions from the fund investments over the next 10 to 13 years, depending on the age of the funds and any potential extensions of terms of the funds. (2) Venture capital and private equity fund investments, debt funds, and other fund investments within non-marketable securities (equity method accounting) include funds that invest in or lend money to primarily U.S. and global technology and life science/healthcare companies. It is estimated that we will receive distributions from the funds over the next 5 to 8 years, depending on the age of the funds and any potential extensions of the terms of the funds.

Basis of Presentation - Allowan

Basis of Presentation - Allowance for Credit Losses: Loans (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)portfolio_segmentclass_financing_receivable	Dec. 31, 2019USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of portfolio segments \| portfolio_segment	6
Number of classes of financing receivables \| class_financing_receivable	11
Forecast period for estimated credit loss for loans	3 years
Lower Limit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Sponsor equity contribution, percentage of acquisition price	50.00%
Mid stage \| Upper Limit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue threshold of portfolio segment subcategories	$ 15
Investor dependent
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of portfolio segments \| portfolio_segment	2
Investor dependent \| Early stage
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue threshold of portfolio segment subcategories	$ 5
Investor dependent \| Mid stage \| Lower Limit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue threshold of portfolio segment subcategories	5
Investor dependent \| Later stage
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue threshold of portfolio segment subcategories	15
Accrued interest receivable and other assets \| Loans
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accrued interest receivable	$ 109.3	$ 119.1

Basis of Presentation - Investm

Basis of Presentation - Investment Securities (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Forecast period for estimated credit loss for investments	1 year
Investment securities \| Accrued interest receivable and other assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accrued interest receivable	$ 39.4	$ 45.2

Basis of Presentation - Adoptio

Basis of Presentation - Adoption of New Accounting Standards (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020	Jan. 01, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses: loans	$ 512,958	$ 589,828		$ 304,924	$ 304,410	$ 301,888	$ 280,903
Allowance for credit losses: held-to-maturity securities	291	222		0
Deferred tax assets				28,433
Retained earnings, net of tax	5,283,433			4,575,601
Unfunded Credit Commitments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses: loans	$ 101,515	99,294		67,656	$ 63,108	62,664	55,183
Adjustments Due to Adoption of ASC 326
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses: loans				25,464
Allowance for credit losses: held-to-maturity securities				174
Deferred tax assets				13,415
Retained earnings, net of tax				(35,049)
Adjustments Due to Adoption of ASC 326 \| Unfunded Credit Commitments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses: loans		$ 0		$ 22,826		$ 0	$ 0
Adjusted Balance
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses: loans			$ 330,388
Allowance for credit losses: held-to-maturity securities			174
Deferred tax assets			41,848
Retained earnings, net of tax			4,540,552
Adjusted Balance \| Unfunded Credit Commitments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses: loans			$ 90,482

Stockholders' Equity and EPS -

Stockholders' Equity and EPS - Reclassification out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gains on investment securities, net	$ 189,837	$ 29,849	$ 270,760	$ 106,575
Related tax benefit	(162,265)	(105,075)	(299,491)	(331,624)
Net interest income (loss)	527,740	520,644	1,564,804	1,562,933
Total reclassification adjustment for (gains) losses included in net income, net of tax	441,713	267,281	802,901	874,000
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassification adjustment for (gains) losses included in net income, net of tax	(11,568)	1,958	(68,733)	5,145
Accumulated Net Investment Gain (Loss) Attributable to Parent \| Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gains on investment securities, net	0	0	(61,165)	3,905
Related tax benefit	0	0	16,953	(1,087)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent \| Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Related tax benefit	(4,436)	755	9,403	(897)
Net interest income (loss)	$ (16,004)	$ 2,713	$ (33,924)	$ 3,224

Stockholders' Equity and EPS _2

Stockholders' Equity and EPS - Activity Related to Net Gains on Cash Flow Hedges in AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge gains expected to reclassified out of AOCI over next 12 months	$ 63,500
Balance, beginning of period, net of tax	7,468,313	$ 5,706,175	$ 6,621,080	$ 5,264,843
Balance, end of period, net of tax	7,967,380	6,048,469	7,967,380	6,048,469
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period, net of tax	152,556	13,828	(2,130)	0
Net increase in fair value, net of tax	0	7,077	167,639	20,536
Net realized (gain) loss reclassified to net income, net of tax	(11,568)	1,958	(24,521)	2,327
Balance, end of period, net of tax	$ 140,988	$ 22,863	$ 140,988	$ 22,863

Stockholders' Equity and EPS _3

Stockholders' Equity and EPS - Reconciliation of Basic EPS to Diluted EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Numerator:
Net income available to common stockholders	$ 441,713	$ 267,281	$ 802,901	$ 874,000
Denominator:
Weighted average common shares outstanding-basic (in shares)	51,773	51,545	51,640	52,025
Weighted average common shares outstanding—diluted (in shares)	52,146	51,858	51,950	52,431
Earnings per common share:
Basic (dollars per share)	$ 8.53	$ 5.19	$ 15.55	$ 16.80
Diluted (dollars per share)	$ 8.47	$ 5.15	$ 15.46	$ 16.67
Stock options and ESPP
Denominator:
Weighted average effect of dilutive securities (in shares)	141	203	147	238
Restricted stock units and awards
Denominator:
Weighted average effect of dilutive securities (in shares)	232	110	163	168

Stockholders' Equity and EPS _4

Stockholders' Equity and EPS - Common Shares Excluded from Diluted EPS Calculation as They Were Deemed to be Anti-Dilutive (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from diluted earnings per share calculation	374	645	352	448
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from diluted earnings per share calculation	319	213	269	154
Restricted stock units and awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from diluted earnings per share calculation	55	432	83	294

Stockholders' Equity and EPS _5

Stockholders' Equity and EPS - Stock Repurchase Program (Details) - USD ($)	9 Months Ended
	Sep. 30, 2020	Oct. 24, 2019
Equity and Earnings Per Share [Abstract]
Amount of outstanding common stock approved to be repurchased		$ 350,000,000
Common stock repurchased and retired (in shares)	244,223
Common stock repurchased and retired	$ 60,000,000

Stockholders' Equity and EPS _6

Stockholders' Equity and EPS - QTD Stockholders' Equity (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Stockholders Equity Note [Line Items]
Balance, beginning of period, net of tax	$ 7,468,313,000	$ 5,706,175,000	$ 6,621,080,000	$ 5,264,843,000
Common stock issued under employee benefit plans, net of restricted stock cancellations	4,797,000	1,383,000	15,691,000	9,236,000
Net income	474,055,000	281,718,000	855,493,000	909,901,000
Capital calls and distributions, net	(2,243,000)	(8,780,000)	(16,363,000)	(32,002,000)
Net change in unrealized gains and losses on AFS securities, net of tax	10,018,000	50,638,000	392,725,000	173,235,000
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax	(266,000)	(270,000)	(765,000)	(1,275,000)
Foreign currency translation adjustments, net of tax	7,475,000	(4,482,000)	871,000	(4,550,000)
Net change in unrealized gains and losses on cash flow hedges, net of tax	(11,568,000)	9,035,000	143,118,000	22,863,000
Share-based compensation, net	21,408,000	18,782,000	60,733,000	50,550,000
Common stock repurchases		(5,730,000)	(60,020,000)	(352,511,000)
Balance, end of period, net of tax	7,967,380,000	$ 6,048,469,000	7,967,380,000	$ 6,048,469,000
Dividends on preferred stock	(4,594,000)		(12,557,000)
Other	$ (15,000)		$ (24,000)
Common Stock
Stockholders Equity Note [Line Items]
Balance (in shares)	51,740,714	51,561,719	51,655,607	52,586,498
Balance, beginning of period, net of tax	$ 52,000	$ 52,000	$ 52,000	$ 53,000
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)	47,258	19,674	364,494	487,101
Common stock issued under employee benefit plans, net of restricted stock cancellations			$ 0	$ 0
Common stock repurchases (in shares)		(25,562)	(244,223)	(1,532,210)
Common stock repurchases			$ 0	$ (1,000)
Balance (in shares)	51,787,972	51,555,831	51,787,972	51,555,831
Balance, end of period, net of tax	$ 52,000	$ 52,000	$ 52,000	$ 52,000
Additional Paid-in Capital
Stockholders Equity Note [Line Items]
Balance, beginning of period, net of tax	1,522,728,000	1,421,565,000	1,470,071,000	1,378,438,000
Common stock issued under employee benefit plans, net of restricted stock cancellations	4,797,000	1,383,000	15,691,000	9,236,000
Share-based compensation, net	21,408,000	18,782,000	60,733,000	50,550,000
Balance, end of period, net of tax	1,548,918,000	1,441,730,000	1,548,918,000	1,441,730,000
Other	(15,000)		(24,000)
Retained Earnings
Stockholders Equity Note [Line Items]
Balance, beginning of period, net of tax	4,841,720,000	4,051,194,000	4,575,601,000	3,791,838,000
Net income	446,307,000	267,281,000	815,458,000	874,000,000
Common stock repurchases		(5,730,000)	(60,020,000)	(352,510,000)
Balance, end of period, net of tax	5,283,433,000	4,312,745,000	5,283,433,000	4,312,745,000
Dividends on preferred stock	(4,594,000)		(12,557,000)
Accumulated Other Comprehensive Income (Loss)
Stockholders Equity Note [Line Items]
Balance, beginning of period, net of tax	614,735,000	81,232,000	84,445,000	(54,120,000)
Net change in unrealized gains and losses on AFS securities, net of tax	10,018,000	50,638,000	392,725,000	173,235,000
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax	(266,000)	(270,000)	(765,000)	(1,275,000)
Foreign currency translation adjustments, net of tax	7,475,000	(4,482,000)	871,000	(4,550,000)
Net change in unrealized gains and losses on cash flow hedges, net of tax	(11,568,000)	9,035,000	143,118,000	22,863,000
Balance, end of period, net of tax	620,394,000	136,153,000	620,394,000	136,153,000
Total SVBFG Stockholders’ Equity
Stockholders Equity Note [Line Items]
Balance, beginning of period, net of tax	7,319,373,000	5,554,043,000	6,470,307,000	5,116,209,000
Common stock issued under employee benefit plans, net of restricted stock cancellations	4,797,000	1,383,000	15,691,000	9,236,000
Net income	446,307,000	267,281,000	815,458,000	874,000,000
Net change in unrealized gains and losses on AFS securities, net of tax	10,018,000	50,638,000	392,725,000	173,235,000
Amortization of unrealized holding gains on securities transferred from AFS to HTM, net of tax	(266,000)	(270,000)	(765,000)	(1,275,000)
Foreign currency translation adjustments, net of tax	7,475,000	(4,482,000)	871,000	(4,550,000)
Net change in unrealized gains and losses on cash flow hedges, net of tax	(11,568,000)	9,035,000	143,118,000	22,863,000
Share-based compensation, net	21,408,000	18,782,000	60,733,000	50,550,000
Common stock repurchases		(5,730,000)	(60,020,000)	(352,511,000)
Balance, end of period, net of tax	7,792,935,000	5,890,680,000	7,792,935,000	5,890,680,000
Dividends on preferred stock	(4,594,000)		(12,557,000)
Other	(15,000)		(24,000)
Noncontrolling Interests
Stockholders Equity Note [Line Items]
Balance, beginning of period, net of tax	148,940,000	152,132,000	150,773,000	148,634,000
Net income	27,748,000	14,437,000	40,035,000	35,901,000
Capital calls and distributions, net	(2,243,000)	(8,780,000)	(16,363,000)	(32,002,000)
Balance, end of period, net of tax	174,445,000	157,789,000	174,445,000	157,789,000
Preferred Stock
Stockholders Equity Note [Line Items]
Balance, beginning of period, net of tax	340,138,000	0	340,138,000	0
Balance, end of period, net of tax	$ 340,138,000	$ 0	$ 340,138,000	$ 0

Stockholders' Equity and EPS _7

Stockholders' Equity and EPS - Preferred Stock (Details)	Dec. 09, 2019$ / sharesshares	Sep. 30, 2020USD ($)$ / sharesshares	Dec. 31, 2019USD ($)$ / sharesshares
Class of Stock [Line Items]
Preferred stock, shares issued \| shares		350,000	350,000
Preferred stock, shares outstanding \| shares		350,000	350,000
Preferred stock, par value, in usd per share		$ 0.001	$ 0.001
Carrying value \| $		$ 340,138,000	$ 340,138,000
Preferred Stock, Series A
Class of Stock [Line Items]
Preferred stock, shares issued \| shares	350,000	350,000
Preferred stock, par value, in usd per share	$ 0.001	$ 0.001
Preferred stock, liquidation preference per share, in usd per share	$ 1,000
Preferred stock, dividend rate, percentage	5.25%
Carrying value \| $		$ 340,100,000
Preferred stock, liquidation preference, value \| $		$ 350,000,000
Depositary shares
Class of Stock [Line Items]
Preferred stock, liquidation preference per share, in usd per share	$ 25	$ 25
Preferred stock, depository share ownership interest		25

Stockholders' Equity and EPS _8

Stockholders' Equity and EPS - Preferred Stock Summary (Details) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2020USD ($)$ / sharesshares	Dec. 31, 2019USD ($)$ / sharesshares	Dec. 09, 2019$ / sharesshares
Class of Stock [Line Items]
Carrying value \| $	$ 340,138	$ 340,138
Preferred stock, shares issued \| shares	350,000	350,000
Preferred stock, shares outstanding \| shares	350,000	350,000
Preferred stock, par value, in usd per share	$ 0.001	$ 0.001
Preferred Stock, Series A
Class of Stock [Line Items]
Amount outstanding \| $	$ 350,000
Carrying value \| $	$ 340,100
Preferred stock, shares issued \| shares	350,000		350,000
Preferred stock, par value, in usd per share	$ 0.001		$ 0.001
Preferred stock, liquidation preference per share, in usd per share			1,000
Depositary shares
Class of Stock [Line Items]
Preferred stock, depository share ownership interest	25
Preferred stock, liquidation preference per share, in usd per share	$ 25		$ 25
Preferred stock, dividends paid per depository share, usd per share	$ 0.90

Share-Based Compensation - Shar

Share-Based Compensation - Share-Based Compensation and Related Tax Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share-based Payment Arrangement [Abstract]
Share-based compensation expense	$ 21,408	$ 18,782	$ 60,733	$ 50,550
Income tax benefit related to share-based compensation expense	$ (5,560)	$ (4,883)	$ (14,726)	$ (12,028)

Share-Based Compensation - Unre

Share-Based Compensation - Unrecognized Compensation Expense (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2020USD ($)
Unrecognized Share Based Compensation Expense [Line Items]
Unrecognized Expense	$ 140,862
Stock options
Unrecognized Share Based Compensation Expense [Line Items]
Unrecognized Expense	$ 15,541
Average Expected Recognition Period - in Years	2 years 7 months 6 days
Restricted stock units and awards
Unrecognized Share Based Compensation Expense [Line Items]
Unrecognized Expense	$ 125,321
Average Expected Recognition Period - in Years	2 years 8 months 4 days

Share-Based Compensation - Sh_2

Share-Based Compensation - Share-Based Payment Award Activity (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2020USD ($)$ / sharesshares	Sep. 30, 2020USD ($)$ / sharesshares
Options
Outstanding, beginning of period, in shares \| shares		625,407
Granted, in shares \| shares		123,301
Exercised, in shares \| shares		(130,330)
Forfeited, in shares \| shares		(15,460)
Expired, in shares \| shares	(1,030)
Outstanding, end of period, in shares \| shares	601,888	601,888
Vested and expected to vest, end of period, in shares \| shares	578,024	578,024
Exercisable, end of period, in shares \| shares	317,896	317,896
Weighted Average Exercise Price
Outstanding, beginning of period, in usd per share \| $ / shares		$ 169.33
Granted, in usd per share \| $ / shares		186.83
Exercised, in usd per share \| $ / shares		99.72
Forfeited, in usd per share \| $ / shares		231.75
Expired, in usd per share \| $ / shares	$ 71.11
Outstanding, end of period, in usd per share \| $ / shares	186.55	186.55
Vested and expected to vest, end of period, in usd per share \| $ / shares	185.26	185.26
Exercisable, end of period, in usd per share \| $ / shares	$ 152.61	$ 152.61
Weighted Average Remaining Contractual Life - in Years
Outstanding, end of period		4 years 29 days
Vested and expected to vest, end of period		4 years
Exercisable, end of period		2 years 7 months 2 days
Aggregate Intrinsic Value of In-The-Money Options
Outstanding, end of period \| $	$ 38,405,994	$ 38,405,994
Vested and expected to vest, end of period \| $	37,654,264	37,654,264
Exercisable, end of period \| $	$ 30,524,026	$ 30,524,026

Share-Based Compensation - Aggr

Share-Based Compensation - Aggregate Intrinsic Value and Closing Stock Price of Options (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share-based Payment Arrangement [Abstract]
Closing stock price (usd per share)	$ 240.62		$ 240.62
Total intrinsic value of options exercised	$ 5.6	$ 1.6	$ 17.2	$ 16

Share-Based Compensation - Info

Share-Based Compensation - Information for Restricted Stock Units under Equity Incentive Plan (Details)	9 Months Ended
	Sep. 30, 2020$ / sharesshares
Weighted Average Grant Date Fair Value
Market price (usd per share)	$ 240.62
Restricted stock units and awards
Shares
Nonvested, beginning of period, in shares \| shares	847,972
Granted, in shares \| shares	426,071
Vested, in shares \| shares	(247,370)
Forfeited, in shares \| shares	(49,272)
Nonvested, end of period, in shares \| shares	977,401
Weighted Average Grant Date Fair Value
Nonvested, beginning of period, in usd per share	$ 236.54
Granted, in usd per share	190.79
Vested, in usd per share	207.82
Forfeited, in usd per share	226.32
Nonvested, end of period, in usd per share	$ 224.38

Variable Interest Entities - Ca

Variable Interest Entities - Carrying Amounts and Classification of Significant Variable Interests (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 15,687,776	$ 6,781,783
Non-marketable and other equity securities	1,547,363	1,213,829
Accrued interest receivable and other assets	2,316,979	1,745,233
Total assets	96,916,771	71,004,903
Other liabilities	3,067,221	2,041,752
Total liabilities	88,949,391	64,383,823
Maximum exposure to loss in unconsolidated VIEs	771,329	689,360
Investments in qualified affordable housing projects, net	560,983	458,476
Consolidated
Variable Interest Entity [Line Items]
Cash and cash equivalents	14,082	7,629
Non-marketable and other equity securities	318,356	270,057
Accrued interest receivable and other assets	853	1,117
Total assets	333,291	278,803
Other liabilities	1,500	2,854
Total liabilities	1,500	2,854
Maximum exposure to loss in unconsolidated VIEs	331,800
Unconsolidated
Variable Interest Entity [Line Items]
Cash and cash equivalents	0	0
Non-marketable and other equity securities	771,329	689,360
Accrued interest receivable and other assets	0	0
Total assets	771,329	689,360
Other liabilities	332,031	302,031
Total liabilities	332,031	302,031
Maximum exposure to loss in unconsolidated VIEs	771,300
Unconsolidated \| Non-marketable securities
Variable Interest Entity [Line Items]
Maximum exposure to loss in unconsolidated VIEs	$ 771,329	$ 689,360

Variable Interest Entities - Ad

Variable Interest Entities - Additional Information (Details) $ in Thousands	Sep. 30, 2020USD ($)entity	Dec. 31, 2019USD ($)
Investments In Variable Interest Entities [Abstract]
Number of consolidated entities \| entity	4
Variable Interest Entity [Line Items]
Maximum exposure to loss in unconsolidated VIEs	$ 771,329	$ 689,360
Consolidated
Variable Interest Entity [Line Items]
Maximum exposure to loss in unconsolidated VIEs	331,800
Unconsolidated
Variable Interest Entity [Line Items]
Maximum exposure to loss in unconsolidated VIEs	$ 771,300

Cash and Cash Equivalents - Sum

Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Cash and Cash Equivalents [Abstract]
Cash and due from banks	$ 15,237,612	$ 6,492,443
Securities purchased under agreements to resell	450,164	289,340
Total cash and cash equivalents	$ 15,687,776	$ 6,781,783

Cash and Cash Equivalents - S_2

Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Footnote Information) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Cash and Cash Equivalents [Abstract]
Deposits at the Federal Reserve Bank earning interest at the Federal Funds target rate	$ 11,900	$ 3,700
Interest-earning deposits in other financial institutions	2,700	2,100
Fair value of securities purchased under agreements to resell	$ 459.1	$ 295.3

Investment Securities - Compone

Investment Securities - Components of Available-for-Sale Investment Securities Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 25,237,540	$ 13,894,348
Unrealized Gains	675,362	140,713
Unrealized Losses	(8,578)	(20,142)
Carrying Value	25,904,324	14,014,919
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	4,251,342	6,815,874
Unrealized Gains	295,952	82,267
Unrealized Losses	0	(4,131)
Carrying Value	4,547,294	6,894,010
U.S. agency debentures
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	150,000	100,000
Unrealized Gains	2,526	0
Unrealized Losses	0	(453)
Carrying Value	152,526	99,547
Foreign government debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	23,452	9,037
Unrealized Gains	0	1
Unrealized Losses	(3)	0
Carrying Value	23,449	9,038
Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	9,569,724	4,109,372
Unrealized Gains	200,691	39,438
Unrealized Losses	(102)	(19)
Carrying Value	9,770,313	4,148,791
Residential mortgage-backed securities \| Agency-issued collateralized mortgage obligations—fixed rate
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	7,277,652	1,520,414
Unrealized Gains	45,809	17,929
Unrealized Losses	(7,488)	0
Carrying Value	7,315,973	1,538,343
Agency-issued commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,965,370	1,339,651
Unrealized Gains	130,384	1,078
Unrealized Losses	(985)	(15,539)
Carrying Value	$ 4,094,769	$ 1,325,190

Investment Securities - Activit

Investment Securities - Activity of Available-for-Sale Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Sales proceeds	$ 0	$ 0	$ 2,654,212	$ 2,189,087
Gross realized gains	0	0	61,165	1,250
Gross realized losses	0	0	0	(5,155)
Net realized gains (losses)	$ 0	$ 0	$ 61,165	$ (3,905)

Investment Securities - Summary

Investment Securities - Summary of Unrealized Losses on Available-for-Sale Securities (Details) $ in Thousands	Sep. 30, 2020USD ($)Investment	Dec. 31, 2019USD ($)Investment
Debt Securities, Available-for-sale [Line Items]
Less than 12 months - Fair Value of Investments	$ 2,493,315	$ 2,102,365
Less than 12 months - Unrealized Losses	(8,578)	(20,007)
12 months or longer - Fair Value of Investments	0	449,850
12 months or longer - Unrealized Losses	0	(135)
Fair Value of Investments	2,493,315	2,552,215
Unrealized Losses	$ (8,578)	$ (20,142)
Number of investments in unrealized loss position \| Investment	57	58
Number of investments with unrealized losses greater than 12 months \| Investment	0	12
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months - Fair Value of Investments		$ 971,572
Less than 12 months - Unrealized Losses		(3,996)
12 months or longer - Fair Value of Investments		449,850
12 months or longer - Unrealized Losses		(135)
Fair Value of Investments		1,421,422
Unrealized Losses		(4,131)
U.S. agency debentures
Debt Securities, Available-for-sale [Line Items]
Less than 12 months - Fair Value of Investments		99,547
Less than 12 months - Unrealized Losses		(453)
12 months or longer - Fair Value of Investments		0
12 months or longer - Unrealized Losses		0
Fair Value of Investments		99,547
Unrealized Losses		(453)
Foreign government debt securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months - Fair Value of Investments	$ 23,449
Less than 12 months - Unrealized Losses	(3)
12 months or longer - Fair Value of Investments	0
12 months or longer - Unrealized Losses	0
Fair Value of Investments	23,449
Unrealized Losses	(3)
Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months - Fair Value of Investments	179,050	4,014
Less than 12 months - Unrealized Losses	(102)	(19)
12 months or longer - Fair Value of Investments	0	0
12 months or longer - Unrealized Losses	0	0
Fair Value of Investments	179,050	4,014
Unrealized Losses	(102)	(19)
Residential mortgage-backed securities \| Agency-issued collateralized mortgage obligations—fixed rate
Debt Securities, Available-for-sale [Line Items]
Less than 12 months - Fair Value of Investments	1,772,593
Less than 12 months - Unrealized Losses	(7,488)
12 months or longer - Fair Value of Investments	0
12 months or longer - Unrealized Losses	0
Fair Value of Investments	1,772,593
Unrealized Losses	(7,488)
Agency-issued commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months - Fair Value of Investments	518,223	1,027,232
Less than 12 months - Unrealized Losses	(985)	(15,539)
12 months or longer - Fair Value of Investments	0	0
12 months or longer - Unrealized Losses	0	0
Fair Value of Investments	518,223	1,027,232
Unrealized Losses	$ (985)	$ (15,539)

Investment Securities - Summa_2

Investment Securities - Summary of Remaining Contractual Principal Maturities for Available-for-Sale Securities (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2020USD ($)
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	$ 25,904,324
One Year or Less	83,670
After One Year to Five Years	2,989,181
After Five Years to Ten Years	3,081,965
After Ten Years	$ 19,749,508
Available-for-sale Securities \| Lower Limit
Debt Securities, Available-for-sale [Line Items]
Mortgage-backed securities contractual maturities (in years)	10 years
Available-for-sale Securities \| Upper Limit
Debt Securities, Available-for-sale [Line Items]
Mortgage-backed securities contractual maturities (in years)	30 years
Available-for-sale Securities \| U.S. treasury securities
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	$ 4,547,294
One Year or Less	60,221
After One Year to Five Years	2,989,181
After Five Years to Ten Years	1,497,892
After Ten Years	0
Available-for-sale Securities \| U.S. agency debentures
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	152,526
One Year or Less	0
After One Year to Five Years	0
After Five Years to Ten Years	152,526
After Ten Years	0
Available-for-sale Securities \| Foreign government debt securities
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	23,449
One Year or Less	23,449
After One Year to Five Years	0
After Five Years to Ten Years	0
After Ten Years	0
Available-for-sale Securities \| Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	9,770,313
One Year or Less	0
After One Year to Five Years	0
After Five Years to Ten Years	0
After Ten Years	9,770,313
Available-for-sale Securities \| Residential mortgage-backed securities \| Agency-issued collateralized mortgage obligations—fixed rate
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	7,315,973
One Year or Less	0
After One Year to Five Years	0
After Five Years to Ten Years	0
After Ten Years	7,315,973
Available-for-sale Securities \| Agency-issued commercial mortgage-backed securities
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	4,094,769
One Year or Less	0
After One Year to Five Years	0
After Five Years to Ten Years	1,431,547
After Ten Years	$ 2,663,222

Investment Securities - Compo_2

Investment Securities - Components of Held-to-Maturity Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 12,982,514		$ 13,842,946
Unrealized Gains	638,566		289,763
Unrealized Losses	(8,617)		(17,437)
Fair Value	13,612,463		14,115,272
Allowance for Credit Losses	291	$ 222	0
U.S. agency debentures
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	402,346		518,728
Unrealized Gains	19,496		6,640
Unrealized Losses	0		(668)
Fair Value	421,842		524,700
Allowance for Credit Losses	0
Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	5,363,541		6,992,009
Unrealized Gains	266,455		142,209
Unrealized Losses	(62)		(2,066)
Fair Value	5,629,934		7,132,152
Allowance for Credit Losses	0
Residential mortgage-backed securities \| Agency-issued collateralized mortgage obligations—fixed rate
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,909,965		1,608,032
Unrealized Gains	26,601		592
Unrealized Losses	(437)		(8,502)
Fair Value	1,936,129		1,600,122
Allowance for Credit Losses	0
Residential mortgage-backed securities \| Agency-issued collateralized mortgage obligations—variable rate
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	147,714		178,611
Unrealized Gains	362		94
Unrealized Losses	0		(259)
Fair Value	148,076		178,446
Allowance for Credit Losses	0
Agency-issued commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,229,811		2,759,615
Unrealized Gains	154,061		56,914
Unrealized Losses	0		(4,508)
Fair Value	2,383,872		2,812,021
Allowance for Credit Losses	0
Municipal bonds and notes
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,929,137		1,785,951
Unrealized Gains	171,591		83,314
Unrealized Losses	(8,118)		(1,434)
Fair Value	3,092,610		1,867,831
Allowance for Credit Losses	$ 291	$ 222	$ 0

Investment Securities - Summa_3

Investment Securities - Summary of Remaining Contractual Principal Maturities for Held-to-Maturity Securities (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	$ 13,612,463	$ 14,115,272
U.S. agency debentures
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	421,842	524,700
Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	5,629,934	7,132,152
Residential mortgage-backed securities \| Agency-issued collateralized mortgage obligations—fixed rate
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	1,936,129	1,600,122
Residential mortgage-backed securities \| Agency-issued collateralized mortgage obligations—variable rate
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	148,076	178,446
Agency-issued commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	2,383,872	2,812,021
Municipal bonds and notes
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	3,092,610	$ 1,867,831
After One Year to Five Years, Amortized Cost	134,029
After Five Years to Ten Years, Amortized Cost	540,308
Held-to-maturity Securities
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	13,612,463
Amortized Cost	12,982,514
One Year or Less, Amortized Cost	56,128
One Year or Less, Fair Value	56,991
After One Year to Five Years, Amortized Cost	311,310
After One Year to Five Years, Fair Value	323,717
After Five Years to Ten Years, Amortized Cost	2,031,667
After Five Years to Ten Years, Fair Value	2,142,794
After Ten Years, Amortized Cost	10,583,409
After Ten Years, Fair Value	$ 11,088,961
Held-to-maturity Securities \| Lower Limit
Schedule of Held-to-maturity Securities [Line Items]
Mortgage-backed securities contractual maturities (in years)	10 years
Held-to-maturity Securities \| Upper Limit
Schedule of Held-to-maturity Securities [Line Items]
Mortgage-backed securities contractual maturities (in years)	30 years
Held-to-maturity Securities \| U.S. agency debentures
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	$ 421,842
Amortized Cost	402,346
One Year or Less, Amortized Cost	4,675
One Year or Less, Fair Value	4,720
After One Year to Five Years, Amortized Cost	148,559
After One Year to Five Years, Fair Value	153,787
After Five Years to Ten Years, Amortized Cost	249,112
After Five Years to Ten Years, Fair Value	263,335
After Ten Years, Amortized Cost	0
After Ten Years, Fair Value	0
Held-to-maturity Securities \| Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	5,629,934
Amortized Cost	5,363,541
One Year or Less, Amortized Cost	7,113
One Year or Less, Fair Value	7,432
After One Year to Five Years, Amortized Cost	28,722
After One Year to Five Years, Fair Value	29,739
After Five Years to Ten Years, Amortized Cost	588,606
After Five Years to Ten Years, Fair Value	609,151
After Ten Years, Amortized Cost	4,739,100
After Ten Years, Fair Value	4,983,612
Held-to-maturity Securities \| Residential mortgage-backed securities \| Agency-issued collateralized mortgage obligations—fixed rate
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	1,936,129
Amortized Cost	1,909,965
One Year or Less, Amortized Cost	0
One Year or Less, Fair Value	0
After One Year to Five Years, Amortized Cost	0
After One Year to Five Years, Fair Value	0
After Five Years to Ten Years, Amortized Cost	551,213
After Five Years to Ten Years, Fair Value	563,127
After Ten Years, Amortized Cost	1,358,752
After Ten Years, Fair Value	1,373,002
Held-to-maturity Securities \| Residential mortgage-backed securities \| Agency-issued collateralized mortgage obligations—variable rate
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	148,076
Amortized Cost	147,714
One Year or Less, Amortized Cost	0
One Year or Less, Fair Value	0
After One Year to Five Years, Amortized Cost	0
After One Year to Five Years, Fair Value	0
After Five Years to Ten Years, Amortized Cost	0
After Five Years to Ten Years, Fair Value	0
After Ten Years, Amortized Cost	147,714
After Ten Years, Fair Value	148,076
Held-to-maturity Securities \| Agency-issued commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	2,383,872
Amortized Cost	2,229,811
One Year or Less, Amortized Cost	0
One Year or Less, Fair Value	0
After One Year to Five Years, Amortized Cost	0
After One Year to Five Years, Fair Value	0
After Five Years to Ten Years, Amortized Cost	102,428
After Five Years to Ten Years, Fair Value	120,085
After Ten Years, Amortized Cost	2,127,383
After Ten Years, Fair Value	2,263,787
Held-to-maturity Securities \| Municipal bonds and notes
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	3,092,610
Amortized Cost	2,929,137
One Year or Less, Amortized Cost	44,340
One Year or Less, Fair Value	44,839
After One Year to Five Years, Fair Value	140,191
After Five Years to Ten Years, Fair Value	587,096
After Ten Years, Amortized Cost	2,210,460
After Ten Years, Fair Value	$ 2,320,484

Investment Securities - Allowan

Investment Securities - Allowance for Credit Losses for HTM Securities (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Beginning Balance / Day One Impact of adopting ASC 326	$ 222	$ 0
Provision for Credit Losses	69	117
Ending Balance	291	291
Municipal bonds and notes
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Beginning Balance / Day One Impact of adopting ASC 326	222	0
Provision for Credit Losses	69	117
Ending Balance	$ 291	291
Cumulative adjustment for the adoption of amendment
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Beginning Balance / Day One Impact of adopting ASC 326		174
Cumulative adjustment for the adoption of amendment \| Municipal bonds and notes
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Beginning Balance / Day One Impact of adopting ASC 326		$ 174

Investment Securities - Credit

Investment Securities - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Municipal bonds and notes, amortized cost	$ 12,982,514	$ 13,842,946
Municipal bonds and notes
Financing Receivable, Credit Quality Indicator [Line Items]
Municipal bonds and notes, amortized cost	2,929,137	$ 1,785,951
Municipal bonds and notes \| Aaa
Financing Receivable, Credit Quality Indicator [Line Items]
Municipal bonds and notes, amortized cost	1,732,450
Municipal bonds and notes \| Aa1
Financing Receivable, Credit Quality Indicator [Line Items]
Municipal bonds and notes, amortized cost	935,970
Municipal bonds and notes \| Aa2
Financing Receivable, Credit Quality Indicator [Line Items]
Municipal bonds and notes, amortized cost	259,767
Municipal bonds and notes \| Aa3
Financing Receivable, Credit Quality Indicator [Line Items]
Municipal bonds and notes, amortized cost	$ 950

Investment Securities - Compo_3

Investment Securities - Components of Non-marketable and Other Equity Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Investment Holdings [Line Items]
Investments in qualified affordable housing projects, net	$ 560,983	$ 458,476
Non-marketable and other equity securities	1,547,363	1,213,829
Fair value accounting \| Consolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Nonmarketable securities	74,293	87,180
Fair value accounting \| Unconsolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Nonmarketable securities	152,367	178,217
Fair value accounting \| Equity securities
Investment Holdings [Line Items]
Other equity securities in public companies (fair value accounting)	229,297	59,200
Fair value accounting \| Other investments
Investment Holdings [Line Items]
Nonmarketable securities	56,008	55,255
Equity method accounting \| Consolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Nonmarketable securities	274,721	215,367
Equity method accounting \| Unconsolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Nonmarketable securities	274,721	215,367
Equity method accounting \| Debt funds
Investment Holdings [Line Items]
Nonmarketable securities	6,918	7,271
Equity method accounting \| Other investments
Investment Holdings [Line Items]
Nonmarketable securities	$ 192,776	$ 152,863

Investment Securities - Summa_4

Investment Securities - Summary of Venture Capital and Private Equity Fund Investments Held by Consolidated Funds and Percentage Ownership (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Fair value accounting \| Consolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Nonmarketable securities	$ 74,293	$ 87,180

Investment Securities - Non-mar

Investment Securities - Non-marketable and Other Securities Additional Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020USD ($)Investment	Sep. 30, 2019USD ($)	Sep. 30, 2020USD ($)Investment	Sep. 30, 2019USD ($)	Dec. 31, 2019USD ($)Investment
Investment Holdings [Line Items]
Investments in qualified affordable housing projects, net	$ 560,983		$ 560,983		$ 458,476
Tax credits and other tax benefits recognized	15,290	$ 8,705	46,772	$ 28,950
Amortization expense included in provision for income taxes	10,222	6,042	32,081	20,436
Other liabilities	332,031		332,031		302,031
Unrealized gains	30,187	$ 7,995	35,629	$ 19,787
BigCommerce Holdings, Inc.
Investment Holdings [Line Items]
Equity Securities, FV-NI, Unrealized Gain (Loss)	108,400
Fair value accounting \| Unconsolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Nonmarketable securities	$ 152,367		$ 152,367		$ 178,217
Upper Limit
Investment Holdings [Line Items]
Percentage of ownership	5.00%
Non-marketable securities \| Fair value accounting \| Unconsolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Number of investments \| Investment	179		179		205

Investment Securities - Changes

Investment Securities - Changes to Carrying Amount of Other Investments without Readily Determinable Fair Value (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2020USD ($)
Investments, Debt and Equity Securities [Abstract]
Carrying value at September 30, 2020	$ 56,008
Year End Adjustments:
Impairment	(487)
Upward changes for observable prices	1,438
Downward changes for observable prices	(6,210)
Cumulative Adjustments
Impairment	(947)
Upward changes for observable prices	2,236
Downward changes for observable prices	$ (8,918)

Investment Securities - Carryin

Investment Securities - Carrying Value and Ownership Percentage of Investments (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Consolidated venture capital and private equity fund investments \| Fair value accounting
Investment Holdings [Line Items]
Nonmarketable securities	$ 74,293		$ 87,180
Consolidated venture capital and private equity fund investments \| Fair value accounting \| Strategic Investors Fund, LP
Investment Holdings [Line Items]
Nonmarketable securities	4,646		5,729
Consolidated venture capital and private equity fund investments \| Fair value accounting \| Capital Preferred Return Fund, LP
Investment Holdings [Line Items]
Nonmarketable securities	39,246		45,341
Consolidated venture capital and private equity fund investments \| Fair value accounting \| Growth Partners, LP
Investment Holdings [Line Items]
Nonmarketable securities	30,267		35,976
Consolidated venture capital and private equity fund investments \| Fair value accounting \| CP I, LP
Investment Holdings [Line Items]
Nonmarketable securities	134		134
Consolidated venture capital and private equity fund investments \| Equity method accounting
Investment Holdings [Line Items]
Nonmarketable securities	274,721		215,367
Consolidated venture capital and private equity fund investments \| Equity method accounting \| Strategic Investors Fund II, LP
Investment Holdings [Line Items]
Nonmarketable securities	3,519		3,612
Consolidated venture capital and private equity fund investments \| Equity method accounting \| Strategic Investors Fund III, LP
Investment Holdings [Line Items]
Nonmarketable securities	14,984		15,668
Consolidated venture capital and private equity fund investments \| Equity method accounting \| Strategic Investors Fund IV, LP
Investment Holdings [Line Items]
Nonmarketable securities	25,451		27,064
Consolidated venture capital and private equity fund investments \| Equity method accounting \| Strategic Investors Fund V funds
Investment Holdings [Line Items]
Nonmarketable securities	52,575		46,830
Consolidated venture capital and private equity fund investments \| Equity method accounting \| CP II, LP
Investment Holdings [Line Items]
Nonmarketable securities	4,773		5,907
Consolidated venture capital and private equity fund investments \| Equity method accounting \| Other venture capital and private equity fund investments
Investment Holdings [Line Items]
Nonmarketable securities	173,419		116,286
Debt funds \| Equity method accounting
Investment Holdings [Line Items]
Nonmarketable securities	6,918		7,271
Debt funds \| Equity method accounting \| Gold Hill Capital 2008, LP
Investment Holdings [Line Items]
Nonmarketable securities	5,317		5,525
Debt funds \| Equity method accounting \| Other debt funds
Investment Holdings [Line Items]
Nonmarketable securities	1,601		1,746
Other investments \| Fair value accounting
Investment Holdings [Line Items]
Nonmarketable securities	56,008		55,255
Other investments \| Equity method accounting
Investment Holdings [Line Items]
Nonmarketable securities	192,776		152,863
Other investments \| Equity method accounting \| SPD Silicon Valley Bank Co., Ltd.
Investment Holdings [Line Items]
Nonmarketable securities	107,969		74,190
Other investments \| Equity method accounting \| Other investments
Investment Holdings [Line Items]
Nonmarketable securities	$ 84,807		$ 78,673
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Fair value accounting \| Strategic Investors Fund, LP
Investment Holdings [Line Items]
Percentage of ownership	12.60%	12.60%
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Fair value accounting \| Capital Preferred Return Fund, LP
Investment Holdings [Line Items]
Percentage of ownership	20.00%	20.00%
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Fair value accounting \| Growth Partners, LP
Investment Holdings [Line Items]
Percentage of ownership	33.00%	33.00%
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Fair value accounting \| CP I, LP
Investment Holdings [Line Items]
Percentage of ownership	10.70%	10.70%
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Equity method accounting \| Strategic Investors Fund II, LP
Investment Holdings [Line Items]
Percentage of ownership	8.60%	8.60%
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Equity method accounting \| Strategic Investors Fund III, LP
Investment Holdings [Line Items]
Percentage of ownership	5.90%	5.90%
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Equity method accounting \| Strategic Investors Fund IV, LP
Investment Holdings [Line Items]
Percentage of ownership	5.00%	5.00%
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Equity method accounting \| CP II, LP
Investment Holdings [Line Items]
Percentage of ownership	5.10%	5.10%
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Equity method accounting \| CP II, LP \| Direct ownership interest
Investment Holdings [Line Items]
Percentage of ownership	1.30%
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Equity method accounting \| CP II, LP \| Indirect ownership interest
Investment Holdings [Line Items]
Percentage of ownership	3.80%
Non-marketable securities \| Debt funds \| Equity method accounting \| Direct ownership interest
Investment Holdings [Line Items]
Percentage of ownership	11.50%
Non-marketable securities \| Debt funds \| Equity method accounting \| Indirect ownership interest
Investment Holdings [Line Items]
Percentage of ownership	4.00%
Non-marketable securities \| Debt funds \| Equity method accounting \| Gold Hill Capital 2008, LP
Investment Holdings [Line Items]
Percentage of ownership	15.50%	15.50%
Non-marketable securities \| Other investments \| Equity method accounting \| SPD Silicon Valley Bank Co., Ltd.
Investment Holdings [Line Items]
Percentage of ownership	50.00%	50.00%

Investment Securities - Net Gai

Investment Securities - Net Gains on Non-marketable and Other Equity Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Gain (Loss) on Securities [Line Items]
Total net gains on non-marketable and other equity securities	$ 189,837	$ 29,849	$ 209,595	$ 110,480
Non-marketable securities
Gain (Loss) on Securities [Line Items]
Less: realized net gains on sales of non-marketable and other equity securities	5,262	277	5,477	12,637
Net gains on non-marketable and other equity securities still held	184,575	29,572	204,118	97,843
Non-marketable securities \| Fair value accounting \| Consolidated venture capital and private equity fund investments
Gain (Loss) on Securities [Line Items]
Total net gains on non-marketable and other equity securities	8,778	4,555	13,168	22,674
Non-marketable securities \| Fair value accounting \| Unconsolidated venture capital and private equity fund investments
Gain (Loss) on Securities [Line Items]
Total net gains on non-marketable and other equity securities	16,400	8,530	15,187	26,688
Non-marketable securities \| Fair value accounting \| Other investments
Gain (Loss) on Securities [Line Items]
Total net gains on non-marketable and other equity securities	217	(471)	(3,619)	4,701
Non-marketable securities \| Equity method accounting \| Consolidated venture capital and private equity fund investments
Gain (Loss) on Securities [Line Items]
Total net gains on non-marketable and other equity securities	51,334	29,049	69,681	54,189
Non-marketable securities \| Equity method accounting \| Debt funds
Gain (Loss) on Securities [Line Items]
Total net gains on non-marketable and other equity securities	15	187	(253)	1,529
Non-marketable securities \| Equity method accounting \| Other investments
Gain (Loss) on Securities [Line Items]
Total net gains on non-marketable and other equity securities	478	(22)	(2,668)	593
Other equity securities \| Fair value accounting
Gain (Loss) on Securities [Line Items]
Total net gains on non-marketable and other equity securities	$ 112,615	$ (11,979)	$ 118,099	$ 106

Loans, Allowance for Loan Los_3

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Composition of Loans, Net of Unearned Income (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2020USD ($)portfolio_segmentclass_financing_receivablerisk_based_segment	Jun. 30, 2020USD ($)	Dec. 31, 2019USD ($)	Sep. 30, 2019USD ($)	Jun. 30, 2019USD ($)	Dec. 31, 2018USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	$ 38,413,891		$ 33,164,636
Allowance for credit losses	(512,958)	$ (589,828)	(304,924)	$ (304,410)	$ (301,888)	$ (280,903)
Net loans	$ 37,900,933		32,859,712
Number of portfolio segments \| portfolio_segment	6
Number of financing receivable classes \| class_financing_receivable	10
Number of risk-based segments \| risk_based_segment	11
Global fund banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	$ 19,584,518		17,696,794
Allowance for credit losses	(38,989)	(53,723)	(107,285)	(103,916)	(101,253)	(93,781)
Investor dependent
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	5,111,669		4,335,195
Allowance for credit losses	(262,688)	(292,267)	(82,370)	(92,685)	(97,173)	(72,101)
Investor dependent \| Early stage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	1,470,941		1,624,221
Allowance for credit losses	(102,559)	(148,270)	(26,245)	(30,903)	(30,969)	(25,885)
Investor dependent \| Mid stage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	1,626,794		1,047,398
Allowance for credit losses	(62,418)	(56,393)	(15,936)	(17,761)	(28,264)	(20,999)
Investor dependent \| Later stage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	2,013,934		1,663,576
Allowance for credit losses	(97,711)	(87,604)	(40,189)	(44,021)	(37,940)	(25,217)
Cash flow dependent
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	4,662,400		4,424,238
Allowance for credit losses	(91,982)	(97,953)	(68,098)	(63,300)	(56,682)	(66,028)
Cash flow dependent \| Sponsor led buyout
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	2,062,243		2,185,497
Allowance for credit losses	(51,661)	(54,853)	(42,939)	(41,651)	(32,131)	(44,274)
Cash flow dependent \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	2,600,157		2,238,741
Allowance for credit losses	(40,321)	(43,100)	(25,159)	(21,649)	(24,551)	(21,754)
SVB Private Bank
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	4,424,899		3,492,269
Allowance for credit losses	(76,479)	(91,345)	(21,551)	(21,700)	(20,397)	(20,583)
Balance sheet dependent
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	1,698,220		1,286,153
Allowance for credit losses	(29,069)	(24,728)	(12,722)	(14,797)	(17,256)	(21,707)
Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	1,081,963		1,062,264
Allowance for credit losses	(10,405)	(12,319)	(5,296)	(4,254)	(4,227)	(3,646)
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	48,206		867,723
Allowance for credit losses	(866)	(13,635)	(7,602)	$ (3,758)	$ (4,900)	$ (3,057)
SBA loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	1,802,016		0
Allowance for credit losses	$ (2,480)	$ (3,858)	$ 0

Loans, Allowance for Loan Los_4

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Composition of Loans, Net of Unearned Income (Additional Information) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unearned income on loans	$ 222,000	$ 163,000
Loans, at amortized cost	38,413,891	33,164,636
Credit cards
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	329,000	395,000
Construction loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	118,000	183,000
SVB Private Bank
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	4,424,899	3,492,269
Loans reported in Other under historical definitions	411,200
Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	1,081,963	1,062,264
Loans reported in Other under historical definitions	50,300
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	48,206	867,723
Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	4,708,631	4,146,347
Real estate secured loans \| SVB Private Bank
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	3,816,948	3,325,617
Real estate secured loans \| SVB Private Bank \| Loans for personal residence
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	3,179,148	2,829,880
Real estate secured loans \| SVB Private Bank \| Loans to eligible employees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	449,551	401,396
Real estate secured loans \| SVB Private Bank \| Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	50,929	55,461
Real estate secured loans \| SVB Private Bank \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	137,320	38,880
Real estate secured loans \| Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	831,182	820,730
Real estate secured loans \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	$ 60,501	$ 0

Loans, Allowance for Loan Los_5

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Credit Quality Indicators, Broken out by Risk-Based Segments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	$ 38,413,891	$ 33,164,636
Loans, at gross basis		33,327,704
Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	105,711
Loans, at gross basis		102,669
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	36,874,725
Loans, at gross basis		32,361,879
Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	1,433,455
Loans, at gross basis		863,156
Global fund banking
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	19,584,518	17,696,794
Loans, at gross basis		17,712,797
Global fund banking \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	13
Loans, at gross basis		0
Global fund banking \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	19,576,723
Loans, at gross basis		17,708,550
Global fund banking \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	7,782
Loans, at gross basis		4,247
Investor dependent
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	5,111,669	4,335,195
Loans, at gross basis		4,418,884
Investor dependent \| Early stage
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	1,470,941	1,624,221
Loans, at gross basis		1,653,425
Investor dependent \| Mid stage
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	1,626,794	1,047,398
Loans, at gross basis		1,066,783
Investor dependent \| Later stage
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	2,013,934	1,663,576
Loans, at gross basis		1,698,676
Investor dependent \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	69,934
Loans, at gross basis		34,719
Investor dependent \| Nonperforming (Nonaccrual) \| Early stage
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	19,732
Loans, at gross basis		11,093
Investor dependent \| Nonperforming (Nonaccrual) \| Mid stage
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	11,627
Loans, at gross basis		17,330
Investor dependent \| Nonperforming (Nonaccrual) \| Later stage
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	38,575
Loans, at gross basis		6,296
Investor dependent \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	4,541,543
Loans, at gross basis		3,850,585
Investor dependent \| Pass \| Early stage
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	1,296,789
Loans, at gross basis		1,436,022
Investor dependent \| Pass \| Mid stage
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	1,449,525
Loans, at gross basis		924,002
Investor dependent \| Pass \| Later stage
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	1,795,229
Loans, at gross basis		1,490,561
Investor dependent \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	500,192
Loans, at gross basis		533,580
Investor dependent \| Criticized \| Early stage
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	154,420
Loans, at gross basis		206,310
Investor dependent \| Criticized \| Mid stage
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	165,642
Loans, at gross basis		125,451
Investor dependent \| Criticized \| Later stage
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	180,130
Loans, at gross basis		201,819
Cash flow dependent
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	4,662,400	4,424,238
Loans, at gross basis		4,455,867
Cash flow dependent \| Sponsor led buyout
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	2,062,243	2,185,497
Loans, at gross basis		2,203,020
Cash flow dependent \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	2,600,157	2,238,741
Loans, at gross basis		2,252,847
Cash flow dependent \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	27,877
Loans, at gross basis		62,266
Cash flow dependent \| Nonperforming (Nonaccrual) \| Sponsor led buyout
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	21,592
Loans, at gross basis		44,585
Cash flow dependent \| Nonperforming (Nonaccrual) \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	6,285
Loans, at gross basis		17,681
Cash flow dependent \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	4,142,396
Loans, at gross basis		4,181,613
Cash flow dependent \| Pass \| Sponsor led buyout
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	1,827,943
Loans, at gross basis		2,039,847
Cash flow dependent \| Pass \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	2,314,453
Loans, at gross basis		2,141,766
Cash flow dependent \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	492,127
Loans, at gross basis		211,988
Cash flow dependent \| Criticized \| Sponsor led buyout
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	212,708
Loans, at gross basis		118,588
Cash flow dependent \| Criticized \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	279,419
Loans, at gross basis		93,400
SVB Private Bank
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	4,424,899	3,492,269
Loans, at gross basis		3,489,219
SVB Private Bank \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	5,432
Loans, at gross basis		5,480
SVB Private Bank \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	4,395,531
Loans, at gross basis		3,472,138
SVB Private Bank \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	23,936
Loans, at gross basis		11,601
Balance sheet dependent
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	1,698,220	1,286,153
Loans, at gross basis		1,297,304
Balance sheet dependent \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	676
Loans, at gross basis		0
Balance sheet dependent \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	1,565,597
Loans, at gross basis		1,231,961
Balance sheet dependent \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	131,947
Loans, at gross basis		65,343
Premium wine
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	1,081,963	1,062,264
Loans, at gross basis		1,063,512
Premium wine \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	1,675
Loans, at gross basis		204
Premium wine \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	941,511
Loans, at gross basis		1,026,973
Premium wine \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	138,777
Loans, at gross basis		36,335
Other
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	48,206	867,723
Loans, at gross basis		890,121
Other \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	104
Loans, at gross basis		0
Other \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	48,041
Loans, at gross basis		890,059
Other \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	61
Loans, at gross basis		62
SBA loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	1,802,016	$ 0
SBA loans \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	0
SBA loans \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	1,663,383
SBA loans \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, at amortized cost	$ 138,633

Loans, Allowance for Loan Los_6

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Credit Quality Indicators, Broken out by Risk-Based Segments and Vintage Year (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
2020	$ 7,146,926
2019	4,598,266
2018	2,159,063
2017	1,095,436
2016	585,426
2015	670,298
Revolving Loans	22,098,467
Revolving Loans Converted to Term Loans	60,009
Total	38,413,891	$ 33,164,636
Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
Total	105,711
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total	36,874,725
Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,433,455
Global fund banking
Financing Receivable, Credit Quality Indicator [Line Items]
2020	271,172
2019	156,722
2018	70,084
2017	36,907
2016	2,552
2015	11,588
Revolving Loans	19,023,933
Revolving Loans Converted to Term Loans	11,560
Total	19,584,518	17,696,794
Global fund banking \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	8
2018	0
2017	0
2016	0
2015	0
Revolving Loans	5
Revolving Loans Converted to Term Loans	0
Total	13
Global fund banking \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	271,164
2019	156,714
2018	70,084
2017	36,907
2016	2,552
2015	11,588
Revolving Loans	19,022,934
Revolving Loans Converted to Term Loans	4,780
Total	19,576,723
Global fund banking \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
2020	8
2019	0
2018	0
2017	0
2016	0
2015	0
Revolving Loans	994
Revolving Loans Converted to Term Loans	6,780
Total	7,782
Investor dependent
Financing Receivable, Credit Quality Indicator [Line Items]
2020	2,223,466
2019	1,467,917
2018	653,172
2017	167,774
2016	14,998
2015	21,300
Revolving Loans	553,994
Revolving Loans Converted to Term Loans	9,048
Total	5,111,669	4,335,195
Investor dependent \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
Total	69,934
Investor dependent \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total	4,541,543
Investor dependent \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Total	500,192
Investor dependent \| Early stage
Financing Receivable, Credit Quality Indicator [Line Items]
2020	612,434
2019	529,801
2018	184,245
2017	49,252
2016	4,960
2015	757
Revolving Loans	87,922
Revolving Loans Converted to Term Loans	1,570
Total	1,470,941	1,624,221
Investor dependent \| Early stage \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	2,466
2019	8,870
2018	6,956
2017	463
2016	0
2015	4
Revolving Loans	973
Revolving Loans Converted to Term Loans	0
Total	19,732
Investor dependent \| Early stage \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	589,224
2019	452,550
2018	140,448
2017	37,911
2016	2,430
2015	390
Revolving Loans	73,199
Revolving Loans Converted to Term Loans	637
Total	1,296,789
Investor dependent \| Early stage \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
2020	20,744
2019	68,381
2018	36,841
2017	10,878
2016	2,530
2015	363
Revolving Loans	13,750
Revolving Loans Converted to Term Loans	933
Total	154,420
Investor dependent \| Mid stage
Financing Receivable, Credit Quality Indicator [Line Items]
2020	786,333
2019	390,402
2018	247,445
2017	55,847
2016	9,476
2015	2,725
Revolving Loans	132,072
Revolving Loans Converted to Term Loans	2,494
Total	1,626,794	1,047,398
Investor dependent \| Mid stage \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	2
2019	2,558
2018	5,405
2017	3,519
2016	0
2015	0
Revolving Loans	143
Revolving Loans Converted to Term Loans	0
Total	11,627
Investor dependent \| Mid stage \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	726,708
2019	344,458
2018	209,372
2017	39,603
2016	7,510
2015	2,725
Revolving Loans	116,655
Revolving Loans Converted to Term Loans	2,494
Total	1,449,525
Investor dependent \| Mid stage \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
2020	59,623
2019	43,386
2018	32,668
2017	12,725
2016	1,966
2015	0
Revolving Loans	15,274
Revolving Loans Converted to Term Loans	0
Total	165,642
Investor dependent \| Later stage
Financing Receivable, Credit Quality Indicator [Line Items]
2020	824,699
2019	547,714
2018	221,482
2017	62,675
2016	562
2015	17,818
Revolving Loans	334,000
Revolving Loans Converted to Term Loans	4,984
Total	2,013,934	1,663,576
Investor dependent \| Later stage \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	17,506
2019	1,886
2018	12,434
2017	0
2016	0
2015	0
Revolving Loans	6,749
Revolving Loans Converted to Term Loans	0
Total	38,575
Investor dependent \| Later stage \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	790,085
2019	473,800
2018	178,768
2017	60,009
2016	562
2015	9,110
Revolving Loans	277,911
Revolving Loans Converted to Term Loans	4,984
Total	1,795,229
Investor dependent \| Later stage \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
2020	17,108
2019	72,028
2018	30,280
2017	2,666
2016	0
2015	8,708
Revolving Loans	49,340
Revolving Loans Converted to Term Loans	0
Total	180,130
Cash flow dependent
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,052,665
2019	1,313,244
2018	647,477
2017	372,800
2016	102,548
2015	346
Revolving Loans	1,173,320
Revolving Loans Converted to Term Loans	0
Total	4,662,400	4,424,238
Cash flow dependent \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
Total	27,877
Cash flow dependent \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total	4,142,396
Cash flow dependent \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Total	492,127
Cash flow dependent \| Sponsor led buyout
Financing Receivable, Credit Quality Indicator [Line Items]
2020	577,833
2019	683,895
2018	379,215
2017	254,926
2016	62,505
2015	0
Revolving Loans	103,869
Revolving Loans Converted to Term Loans	0
Total	2,062,243	2,185,497
Cash flow dependent \| Sponsor led buyout \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	33
2019	11,907
2018	0
2017	7,200
2016	0
2015	0
Revolving Loans	2,452
Revolving Loans Converted to Term Loans	0
Total	21,592
Cash flow dependent \| Sponsor led buyout \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	534,579
2019	601,938
2018	326,172
2017	226,326
2016	50,267
2015	0
Revolving Loans	88,661
Revolving Loans Converted to Term Loans	0
Total	1,827,943
Cash flow dependent \| Sponsor led buyout \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
2020	43,221
2019	70,050
2018	53,043
2017	21,400
2016	12,238
2015	0
Revolving Loans	12,756
Revolving Loans Converted to Term Loans	0
Total	212,708
Cash flow dependent \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
2020	474,832
2019	629,349
2018	268,262
2017	117,874
2016	40,043
2015	346
Revolving Loans	1,069,451
Revolving Loans Converted to Term Loans	0
Total	2,600,157	2,238,741
Cash flow dependent \| Other \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	3,845
2017	0
2016	0
2015	0
Revolving Loans	2,440
Revolving Loans Converted to Term Loans	0
Total	6,285
Cash flow dependent \| Other \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	465,243
2019	574,231
2018	189,501
2017	116,918
2016	39,627
2015	346
Revolving Loans	928,587
Revolving Loans Converted to Term Loans	0
Total	2,314,453
Cash flow dependent \| Other \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
2020	9,589
2019	55,118
2018	74,916
2017	956
2016	416
2015	0
Revolving Loans	138,424
Revolving Loans Converted to Term Loans	0
Total	279,419
SVB Private Bank
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,192,480
2019	1,218,069
2018	425,955
2017	399,048
2016	347,695
2015	471,702
Revolving Loans	369,629
Revolving Loans Converted to Term Loans	321
Total	4,424,899	3,492,269
SVB Private Bank \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	520
2018	2,475
2017	0
2016	0
2015	1,702
Revolving Loans	735
Revolving Loans Converted to Term Loans	0
Total	5,432
SVB Private Bank \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,191,024
2019	1,212,000
2018	420,440
2017	397,847
2016	342,594
2015	463,198
Revolving Loans	368,107
Revolving Loans Converted to Term Loans	321
Total	4,395,531
SVB Private Bank \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,456
2019	5,549
2018	3,040
2017	1,201
2016	5,101
2015	6,802
Revolving Loans	787
Revolving Loans Converted to Term Loans	0
Total	23,936
Balance sheet dependent
Financing Receivable, Credit Quality Indicator [Line Items]
2020	435,006
2019	211,062
2018	243,088
2017	32,448
2016	0
2015	675
Revolving Loans	774,435
Revolving Loans Converted to Term Loans	1,506
Total	1,698,220	1,286,153
Balance sheet dependent \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
2015	675
Revolving Loans	1
Revolving Loans Converted to Term Loans	0
Total	676
Balance sheet dependent \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	374,768
2019	202,185
2018	237,529
2017	31,838
2016	0
2015	0
Revolving Loans	717,771
Revolving Loans Converted to Term Loans	1,506
Total	1,565,597
Balance sheet dependent \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
2020	60,238
2019	8,877
2018	5,559
2017	610
2016	0
2015	0
Revolving Loans	56,663
Revolving Loans Converted to Term Loans	0
Total	131,947
Premium wine
Financing Receivable, Credit Quality Indicator [Line Items]
2020	168,625
2019	207,862
2018	106,195
2017	84,559
2016	117,633
2015	164,607
Revolving Loans	194,908
Revolving Loans Converted to Term Loans	37,574
Total	1,081,963	1,062,264
Premium wine \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	1,662
2015	0
Revolving Loans	13
Revolving Loans Converted to Term Loans	0
Total	1,675
Premium wine \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	154,624
2019	181,416
2018	70,297
2017	84,221
2016	102,297
2015	156,397
Revolving Loans	154,685
Revolving Loans Converted to Term Loans	37,574
Total	941,511
Premium wine \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
2020	14,001
2019	26,446
2018	35,898
2017	338
2016	13,674
2015	8,210
Revolving Loans	40,210
Revolving Loans Converted to Term Loans	0
Total	138,777
Other
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,496
2019	23,390
2018	13,092
2017	1,900
2016	0
2015	80
Revolving Loans	8,248
Revolving Loans Converted to Term Loans	0
Total	48,206	867,723
Other \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	104
2018	0
2017	0
2016	0
2015	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total	104
Other \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,474
2019	23,286
2018	13,092
2017	1,900
2016	0
2015	80
Revolving Loans	8,209
Revolving Loans Converted to Term Loans	0
Total	48,041
Other \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
2020	22
2019	0
2018	0
2017	0
2016	0
2015	0
Revolving Loans	39
Revolving Loans Converted to Term Loans	0
Total	61
SBA loans
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,802,016
2019	0
2018	0
2017	0
2016	0
2015	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total	1,802,016	$ 0
SBA loans \| Nonperforming (Nonaccrual)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
2015	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total	0
SBA loans \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,663,383
2019	0
2018	0
2017	0
2016	0
2015	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total	1,663,383
SBA loans \| Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
2020	138,633
2019	0
2018	0
2017	0
2016	0
2015	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total	$ 138,633

Loans, Allowance for Loan Los_7

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Activity Relating to our Allowance for Credit Losses for Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Decrease in allowance for credit loss	$ (76,900)
Allowance for credit loss, beginning balance	589,828	$ 301,888	$ 304,924	$ 280,903
Charge-offs	(28,449)	(36,820)	(80,400)	(72,255)
Recoveries	4,354	3,888	16,182	15,133
Provision for (Reduction) Credit Losses	(54,106)	35,985	246,694	80,954
Foreign Currency Translation Adjustments	1,331	(531)	94	(325)
Allowance for credit loss, ending balance	512,958	304,410	512,958	304,410
Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance			25,464
Global fund banking
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	53,723	101,253	107,285	93,781
Charge-offs	0	0	0	(2,047)
Recoveries	0	1,200	0	1,200
Provision for (Reduction) Credit Losses	(14,734)	1,485	1,772	11,304
Foreign Currency Translation Adjustments	0	(22)	(180)	(322)
Allowance for credit loss, ending balance	38,989	103,916	38,989	103,916
Global fund banking \| Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance			(69,888)
Investor dependent
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	292,267	97,173	82,370	72,101
Charge-offs	(28,317)	(35,554)	(67,233)	(64,760)
Recoveries	3,808	2,421	12,377	9,026
Provision for (Reduction) Credit Losses	(4,801)	29,074	164,958	76,606
Foreign Currency Translation Adjustments	(269)	(429)	(1,408)	(288)
Allowance for credit loss, ending balance	262,688	92,685	262,688	92,685
Investor dependent \| Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance			71,624
Investor dependent \| Early stage
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	148,270	30,969	26,245	25,885
Charge-offs	(14,950)	(7,524)	(26,897)	(16,819)
Recoveries	2,511	1,760	6,474	5,685
Provision for (Reduction) Credit Losses	(33,171)	5,783	57,494	16,547
Foreign Currency Translation Adjustments	(101)	(85)	(668)	(395)
Allowance for credit loss, ending balance	102,559	30,903	102,559	30,903
Investor dependent \| Early stage \| Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance			39,911
Investor dependent \| Mid stage
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	56,393	28,264	15,936	20,999
Charge-offs	(7,162)	(16,581)	(20,147)	(36,492)
Recoveries	697	385	5,303	1,288
Provision for (Reduction) Credit Losses	12,578	5,778	54,584	31,443
Foreign Currency Translation Adjustments	(88)	(85)	(221)	523
Allowance for credit loss, ending balance	62,418	17,761	62,418	17,761
Investor dependent \| Mid stage \| Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance			6,963
Investor dependent \| Later stage
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	87,604	37,940	40,189	25,217
Charge-offs	(6,205)	(11,449)	(20,189)	(11,449)
Recoveries	600	276	600	2,053
Provision for (Reduction) Credit Losses	15,792	17,513	52,880	28,616
Foreign Currency Translation Adjustments	(80)	(259)	(519)	(416)
Allowance for credit loss, ending balance	97,711	44,021	97,711	44,021
Investor dependent \| Later stage \| Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance			24,750
Cash flow dependent
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	97,953	56,682	68,098	66,028
Charge-offs	(130)	0	(6,139)	(3,118)
Recoveries	0	250	2,846	4,647
Provision for (Reduction) Credit Losses	(5,841)	6,464	27,340	(4,336)
Foreign Currency Translation Adjustments	0	(96)	(258)	79
Allowance for credit loss, ending balance	91,982	63,300	91,982	63,300
Cash flow dependent \| Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance			95
Cash flow dependent \| Sponsor led buyout
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	54,853	32,131	42,939	44,274
Charge-offs	(130)	0	(2,754)	(2,402)
Recoveries	0	0	2,845	0
Provision for (Reduction) Credit Losses	(3,062)	9,663	5,613	(253)
Foreign Currency Translation Adjustments	0	(143)	(133)	32
Allowance for credit loss, ending balance	51,661	41,651	51,661	41,651
Cash flow dependent \| Sponsor led buyout \| Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance			3,151
Cash flow dependent \| Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	43,100	24,551	25,159	21,754
Charge-offs	0	0	(3,385)	(716)
Recoveries	0	250	1	4,647
Provision for (Reduction) Credit Losses	(2,779)	(3,199)	21,727	(4,083)
Foreign Currency Translation Adjustments	0	47	(125)	47
Allowance for credit loss, ending balance	40,321	21,649	40,321	21,649
Cash flow dependent \| Other \| Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance			(3,056)
SVB Private Bank
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	91,345	20,397	21,551	20,583
Charge-offs	0	0	(1,616)	(1,019)
Recoveries	15	15	15	240
Provision for (Reduction) Credit Losses	(14,881)	1,307	44,194	1,999
Foreign Currency Translation Adjustments	0	(19)	(280)	(103)
Allowance for credit loss, ending balance	76,479	21,700	76,479	21,700
SVB Private Bank \| Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance			12,615
Balance sheet dependent
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	24,728	17,256	12,722	21,707
Charge-offs	0	0	(4,900)	0
Recoveries	0	0	0	0
Provision for (Reduction) Credit Losses	4,341	(2,496)	22,685	(7,135)
Foreign Currency Translation Adjustments	0	37	(74)	225
Allowance for credit loss, ending balance	29,069	14,797	29,069	14,797
Balance sheet dependent \| Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance			(1,364)
Premium wine
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	12,319	4,227	5,296	3,646
Charge-offs	0	0	(192)	0
Recoveries	0	0	0	0
Provision for (Reduction) Credit Losses	(1,914)	27	1,691	611
Foreign Currency Translation Adjustments	0	0	(40)	(3)
Allowance for credit loss, ending balance	10,405	4,254	10,405	4,254
Premium wine \| Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance			3,650
Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	13,635	4,900	7,602	3,057
Charge-offs	(2)	(1,266)	(320)	(1,311)
Recoveries	531	2	944	20
Provision for (Reduction) Credit Losses	(14,898)	124	(18,426)	1,905
Foreign Currency Translation Adjustments	1,600	(2)	2,334	87
Allowance for credit loss, ending balance	866	$ 3,758	866	$ 3,758
Other \| Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance			8,732
SBA loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	3,858		0
Charge-offs	0		0
Recoveries	0		0
Provision for (Reduction) Credit Losses	(1,378)		2,480
Foreign Currency Translation Adjustments	0		0
Allowance for credit loss, ending balance	$ 2,480		2,480
SBA loans \| Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance			$ 0

Loans, Allowance for Loan Los_8

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Summary of the Aging of Loans Broken out by Risk-based Segments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Past due	$ 19,512
Current	38,394,379
Total	38,413,891	$ 33,164,636
Loans Past Due 90 Days or More Still Accruing Interest	0
Past due, at gross basis		191,587
Current, at gross basis		33,136,117
Loans, at gross basis		33,327,704
Loans Past Due 90 Days or More Still Accruing Interest, at gross basis		3,515
30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	13,928
Past due, at gross basis		137,375
60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	4,837
Past due, at gross basis		38,224
Equal to or Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	747
Past due, at gross basis		15,988
Global fund banking
Financing Receivable, Past Due [Line Items]
Past due	6,299
Current	19,578,219
Total	19,584,518	17,696,794
Loans Past Due 90 Days or More Still Accruing Interest	0
Past due, at gross basis		101,272
Current, at gross basis		17,611,525
Loans, at gross basis		17,712,797
Loans Past Due 90 Days or More Still Accruing Interest, at gross basis		3,150
Global fund banking \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	6,285
Past due, at gross basis		97,739
Global fund banking \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	0
Past due, at gross basis		383
Global fund banking \| Equal to or Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	14
Past due, at gross basis		3,150
Investor dependent
Financing Receivable, Past Due [Line Items]
Past due	1,952
Current	5,109,717
Total	5,111,669	4,335,195
Loans Past Due 90 Days or More Still Accruing Interest	0
Past due, at gross basis		60,298
Current, at gross basis		4,358,586
Loans, at gross basis		4,418,884
Loans Past Due 90 Days or More Still Accruing Interest, at gross basis		0
Investor dependent \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	906
Past due, at gross basis		19,445
Investor dependent \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	468
Past due, at gross basis		29,561
Investor dependent \| Equal to or Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	578
Past due, at gross basis		11,292
Investor dependent \| Early stage
Financing Receivable, Past Due [Line Items]
Past due	1,295
Current	1,469,646
Total	1,470,941	1,624,221
Loans Past Due 90 Days or More Still Accruing Interest	0
Past due, at gross basis		24,092
Current, at gross basis		1,629,333
Loans, at gross basis		1,653,425
Loans Past Due 90 Days or More Still Accruing Interest, at gross basis		0
Investor dependent \| Early stage \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	605
Past due, at gross basis		1,307
Investor dependent \| Early stage \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	323
Past due, at gross basis		22,062
Investor dependent \| Early stage \| Equal to or Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	367
Past due, at gross basis		723
Investor dependent \| Mid stage
Financing Receivable, Past Due [Line Items]
Past due	606
Current	1,626,188
Total	1,626,794	1,047,398
Loans Past Due 90 Days or More Still Accruing Interest	0
Past due, at gross basis		17,024
Current, at gross basis		1,049,759
Loans, at gross basis		1,066,783
Loans Past Due 90 Days or More Still Accruing Interest, at gross basis		0
Investor dependent \| Mid stage \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	250
Past due, at gross basis		10,025
Investor dependent \| Mid stage \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	145
Past due, at gross basis		6,999
Investor dependent \| Mid stage \| Equal to or Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	211
Past due, at gross basis		0
Investor dependent \| Later stage
Financing Receivable, Past Due [Line Items]
Past due	51
Current	2,013,883
Total	2,013,934	1,663,576
Loans Past Due 90 Days or More Still Accruing Interest	0
Past due, at gross basis		19,182
Current, at gross basis		1,679,494
Loans, at gross basis		1,698,676
Loans Past Due 90 Days or More Still Accruing Interest, at gross basis		0
Investor dependent \| Later stage \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	51
Past due, at gross basis		8,113
Investor dependent \| Later stage \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	0
Past due, at gross basis		500
Investor dependent \| Later stage \| Equal to or Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	0
Past due, at gross basis		10,569
Cash flow dependent
Financing Receivable, Past Due [Line Items]
Past due	745
Current	4,661,655
Total	4,662,400	4,424,238
Loans Past Due 90 Days or More Still Accruing Interest	0
Past due, at gross basis		5,489
Current, at gross basis		4,450,378
Loans, at gross basis		4,455,867
Loans Past Due 90 Days or More Still Accruing Interest, at gross basis		0
Cash flow dependent \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	742
Past due, at gross basis		2,426
Cash flow dependent \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	3
Past due, at gross basis		3,061
Cash flow dependent \| Equal to or Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	0
Past due, at gross basis		2
Cash flow dependent \| Sponsor led buyout
Financing Receivable, Past Due [Line Items]
Past due	0
Current	2,062,243
Total	2,062,243	2,185,497
Loans Past Due 90 Days or More Still Accruing Interest	0
Past due, at gross basis		0
Current, at gross basis		2,203,020
Loans, at gross basis		2,203,020
Loans Past Due 90 Days or More Still Accruing Interest, at gross basis		0
Cash flow dependent \| Sponsor led buyout \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	0
Past due, at gross basis		0
Cash flow dependent \| Sponsor led buyout \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	0
Past due, at gross basis		0
Cash flow dependent \| Sponsor led buyout \| Equal to or Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	0
Past due, at gross basis		0
Cash flow dependent \| Other
Financing Receivable, Past Due [Line Items]
Past due	745
Current	2,599,412
Total	2,600,157	2,238,741
Loans Past Due 90 Days or More Still Accruing Interest	0
Past due, at gross basis		5,489
Current, at gross basis		2,247,358
Loans, at gross basis		2,252,847
Loans Past Due 90 Days or More Still Accruing Interest, at gross basis		0
Cash flow dependent \| Other \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	742
Past due, at gross basis		2,426
Cash flow dependent \| Other \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	3
Past due, at gross basis		3,061
Cash flow dependent \| Other \| Equal to or Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	0
Past due, at gross basis		2
SVB Private Bank
Financing Receivable, Past Due [Line Items]
Past due	8
Current	4,424,891
Total	4,424,899	3,492,269
Loans Past Due 90 Days or More Still Accruing Interest	0
Past due, at gross basis		10,175
Current, at gross basis		3,479,044
Loans, at gross basis		3,489,219
Loans Past Due 90 Days or More Still Accruing Interest, at gross basis		365
SVB Private Bank \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	4
Past due, at gross basis		6,582
SVB Private Bank \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	4
Past due, at gross basis		2,049
SVB Private Bank \| Equal to or Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	0
Past due, at gross basis		1,544
Balance sheet dependent
Financing Receivable, Past Due [Line Items]
Past due	2,858
Current	1,695,362
Total	1,698,220	1,286,153
Loans Past Due 90 Days or More Still Accruing Interest	0
Past due, at gross basis		2,731
Current, at gross basis		1,294,573
Loans, at gross basis		1,297,304
Loans Past Due 90 Days or More Still Accruing Interest, at gross basis		0
Balance sheet dependent \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	2,851
Past due, at gross basis		2,731
Balance sheet dependent \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	7
Past due, at gross basis		0
Balance sheet dependent \| Equal to or Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	0
Past due, at gross basis		0
Premium wine
Financing Receivable, Past Due [Line Items]
Past due	7,472
Current	1,074,491
Total	1,081,963	1,062,264
Loans Past Due 90 Days or More Still Accruing Interest	0
Past due, at gross basis		11,605
Current, at gross basis		1,051,907
Loans, at gross basis		1,063,512
Loans Past Due 90 Days or More Still Accruing Interest, at gross basis		0
Premium wine \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	3,117
Past due, at gross basis		8,435
Premium wine \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	4,355
Past due, at gross basis		3,170
Premium wine \| Equal to or Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	0
Past due, at gross basis		0
Other
Financing Receivable, Past Due [Line Items]
Past due	178
Current	48,028
Total	48,206	867,723
Loans Past Due 90 Days or More Still Accruing Interest	0
Past due, at gross basis		17
Current, at gross basis		890,104
Loans, at gross basis		890,121
Loans Past Due 90 Days or More Still Accruing Interest, at gross basis		0
Other \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	23
Past due, at gross basis		17
Other \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	0
Past due, at gross basis		0
Other \| Equal to or Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	155
Past due, at gross basis		0
SBA loans
Financing Receivable, Past Due [Line Items]
Past due	0
Current	1,802,016
Total	1,802,016	$ 0
Loans Past Due 90 Days or More Still Accruing Interest	0
SBA loans \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	0
SBA loans \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	0
SBA loans \| Equal to or Greater Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	$ 0

Loans, Allowance for Loan Los_9

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Nonaccrual Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Financing Receivable, Nonaccrual [Line Items]
Beginning Balance	$ 94,326	$ 96,641	$ 102,669	$ 94,142
Additions	70,000	53,643	172,462	143,960
Paydowns and Other Reductions	(38,754)	(22,510)	(119,215)	(86,498)
Charge-offs	(19,861)	(23,729)	(50,205)	(47,559)
Ending Balance	105,711	104,045	105,711	104,045
Investor dependent
Financing Receivable, Nonaccrual [Line Items]
Beginning Balance	43,039	77,335	34,719	23,752
Additions	53,338	14,631	100,055	100,504
Paydowns and Other Reductions	(6,582)	(16,785)	(18,050)	(30,227)
Charge-offs	(19,861)	(23,729)	(46,790)	(42,577)
Ending Balance	69,934	51,452	69,934	51,452
Cash flow dependent
Financing Receivable, Nonaccrual [Line Items]
Beginning Balance	26,975	8,444	62,266	56,690
Additions	12,528	37,307	42,766	37,386
Paydowns and Other Reductions	(11,626)	(640)	(74,513)	(46,097)
Charge-offs	0	0	(2,642)	(2,868)
Ending Balance	27,877	45,111	27,877	45,111
SVB Private Bank
Financing Receivable, Nonaccrual [Line Items]
Beginning Balance	6,517	5,644	5,480	3,919
Additions	3,348	1,531	5,982	3,411
Paydowns and Other Reductions	(4,433)	(86)	(5,449)	(174)
Charge-offs	0	0	(581)	(67)
Ending Balance	5,432	7,089	5,432	7,089
Balance sheet dependent
Financing Receivable, Nonaccrual [Line Items]
Beginning Balance	11,842	4,974	0	5,004
Additions	675	0	17,417	238
Paydowns and Other Reductions	(11,841)	(4,974)	(16,741)	(5,242)
Charge-offs	0	0	0	0
Ending Balance	676	0	676	0
Premium wine
Financing Receivable, Nonaccrual [Line Items]
Beginning Balance	1,681	244	204	285
Additions	0	174	1,686	174
Paydowns and Other Reductions	(6)	(25)	(23)	(66)
Charge-offs	0	0	(192)	0
Ending Balance	1,675	393	1,675	393
Other
Financing Receivable, Nonaccrual [Line Items]
Beginning Balance	61	0	0	792
Additions	105	0	339	0
Paydowns and Other Reductions	(62)	0	(235)	(792)
Charge-offs	0	0	0	0
Ending Balance	104	0	104	0
Global fund banking
Financing Receivable, Nonaccrual [Line Items]
Beginning Balance	9	0	0	3,700
Additions	6	0	15	2,247
Paydowns and Other Reductions	(2)	0	(2)	(3,900)
Charge-offs	0	0	0	(2,047)
Ending Balance	13	0	13	0
SBA loans
Financing Receivable, Nonaccrual [Line Items]
Beginning Balance	4,202		0
Additions	0		4,202
Paydowns and Other Reductions	(4,202)		(4,202)
Charge-offs	0		0
Ending Balance	0		0
Mid stage \| Investor dependent
Financing Receivable, Nonaccrual [Line Items]
Beginning Balance	8,119	28,699	17,330	4,751
Additions	10,290	6	22,875	42,497
Paydowns and Other Reductions	(292)	(8,151)	(1,079)	(9,541)
Charge-offs	(6,490)	(15,323)	(27,499)	(32,476)
Ending Balance	11,627	5,231	11,627	5,231
Later stage \| Investor dependent
Financing Receivable, Nonaccrual [Line Items]
Beginning Balance	10,498	38,346	6,296	11,385
Additions	36,779	2,216	48,962	32,786
Paydowns and Other Reductions	(3,500)	(6,462)	(8,276)	(10,071)
Charge-offs	(5,202)	(6,837)	(8,407)	(6,837)
Ending Balance	38,575	27,263	38,575	27,263
Sponsor led buyout \| Cash flow dependent
Financing Receivable, Nonaccrual [Line Items]
Beginning Balance	21,658	8,365	44,585	39,534
Additions	172	37,294	21,830	37,294
Paydowns and Other Reductions	(238)	(640)	(42,199)	(29,407)
Charge-offs	0	0	(2,624)	(2,402)
Ending Balance	21,592	45,019	21,592	45,019
Other \| Cash flow dependent
Financing Receivable, Nonaccrual [Line Items]
Beginning Balance	5,317	79	17,681	17,156
Additions	12,356	13	20,936	92
Paydowns and Other Reductions	(11,388)	0	(32,314)	(16,690)
Charge-offs	0	0	(18)	(466)
Ending Balance	6,285	92	6,285	92
Early stage \| Investor dependent
Financing Receivable, Nonaccrual [Line Items]
Beginning Balance	24,422	10,290	11,093	7,616
Additions	6,269	12,409	28,218	25,221
Paydowns and Other Reductions	(2,790)	(2,172)	(8,695)	(10,615)
Charge-offs	(8,169)	(1,569)	(10,884)	(3,264)
Ending Balance	$ 19,732	$ 18,958	$ 19,732	$ 18,958

Loans, Allowance for Loan Lo_10

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Nonaccrual Loans with No Allowance for Credit Loss (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	$ 105,711	$ 94,326	$ 102,669	$ 104,045	$ 96,641	$ 94,142
Nonaccrual Loans with no Allowance for Credit Loss	6,737		7,230
Global fund banking
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	13	9	0	0	0	3,700
Nonaccrual Loans with no Allowance for Credit Loss	8		0
Investor dependent
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	69,934	43,039	34,719	51,452	77,335	23,752
Nonaccrual Loans with no Allowance for Credit Loss	10		734
Cash flow dependent
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	27,877	26,975	62,266	45,111	8,444	56,690
Nonaccrual Loans with no Allowance for Credit Loss	705		2,782
SVB Private Bank
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	5,432	6,517	5,480	7,089	5,644	3,919
Nonaccrual Loans with no Allowance for Credit Loss	4,912		3,714
Balance sheet dependent
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	676	11,842	0	0	4,974	5,004
Nonaccrual Loans with no Allowance for Credit Loss	0		0
Premium wine
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	1,675	1,681	204	393	244	285
Nonaccrual Loans with no Allowance for Credit Loss	998		0
Other
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	104	61	0	0	0	792
Nonaccrual Loans with no Allowance for Credit Loss	104		0
SBA loans
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	0	4,202	0
Nonaccrual Loans with no Allowance for Credit Loss	0		0
Early stage \| Investor dependent
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	19,732	24,422	11,093	18,958	10,290	7,616
Nonaccrual Loans with no Allowance for Credit Loss	10		460
Mid stage \| Investor dependent
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	11,627	8,119	17,330	5,231	28,699	4,751
Nonaccrual Loans with no Allowance for Credit Loss	0		274
Later stage \| Investor dependent
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	38,575	10,498	6,296	27,263	38,346	11,385
Nonaccrual Loans with no Allowance for Credit Loss	0		0
Sponsor led buyout \| Cash flow dependent
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	21,592	21,658	44,585	45,019	8,365	39,534
Nonaccrual Loans with no Allowance for Credit Loss	0		0
Other \| Cash flow dependent
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	6,285	$ 5,317	17,681	$ 92	$ 79	$ 17,156
Nonaccrual Loans with no Allowance for Credit Loss	$ 705		$ 2,782

Loans, Allowance for Loan Lo_11

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Summary of Loans Modified in Troubled Debt Restructurings (TDRs) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2020USD ($)troubled_debt_restructuring	Sep. 30, 2019USD ($)	Dec. 31, 2019USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of TDRs \| troubled_debt_restructuring			16
Loans modified in TDRs	$ 50,519		$ 50,519		$ 108,982
Unfunded commitments available for funding associated with TDRs	0		0
Partial charge-offs on loans classified as TDRs	13,600	$ 3,700	31,100	$ 9,200
Global fund banking
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	0		0		0
Investor dependent
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	14,849		14,849		37,978
Investor dependent \| Early stage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	7,771		7,771		9,471
Investor dependent \| Mid stage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	3,781		3,781		5,189
Investor dependent \| Later stage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	3,297		3,297		23,318
Cash flow dependent
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	31,654		31,654		55,443
Cash flow dependent \| Sponsor led buyout
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	30,799		30,799		55,443
Cash flow dependent \| Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	855		855		0
SVB Private Bank
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	0		0		2,104
Balance sheet dependent
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	675		675		0
Premium wine
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	3,341		3,341		13,457
Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	0		0		0
SBA loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	$ 0		$ 0		$ 0

Loans, Allowance for Loan Lo_12

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Recorded Investment in Loans Modified in TDRs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	$ 26,329	$ 8,566	$ 31,838	$ 73,439
Payment deferrals
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	25,600	6,400	30,900	69,400
Principal forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	700	2,200	900	4,000
Global fund banking
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	0	0	0	0
Investor dependent
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	4,043	8,566	7,699	23,009
Investor dependent \| Early stage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	4,043	2,205	4,193	2,205
Investor dependent \| Mid stage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	0	0	209	3,480
Investor dependent \| Later stage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	0	6,361	3,297	17,324
Cash flow dependent
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	21,611	0	22,466	48,604
Cash flow dependent \| Sponsor led buyout
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	21,611	0	21,611	48,604
Cash flow dependent \| Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	0	0	855	0
SVB Private Bank
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	0	0	0	1,826
Balance sheet dependent
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	675	0	675	0
Premium wine
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	0	0	998	0
Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	0	0	0	0
SBA loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	$ 0	$ 0	$ 0	$ 0

Loans, Allowance for Loan Lo_13

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Recorded Investment in Loans Modified in TDRs within Previous 12 months Subsequently Defaulted (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment in loans modified in TDRs	$ 998	$ 48,257	$ 998	$ 48,257
Global fund banking
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment in loans modified in TDRs	0	0	0	0
Investor dependent
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment in loans modified in TDRs	0	10,963	0	10,963
Investor dependent \| Early stage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment in loans modified in TDRs	0	0	0	0
Investor dependent \| Mid stage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment in loans modified in TDRs	0	0	0	0
Investor dependent \| Later stage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment in loans modified in TDRs	0	10,963	0	10,963
Cash flow dependent
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment in loans modified in TDRs	0	37,294	0	37,294
Cash flow dependent \| Sponsor led buyout
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment in loans modified in TDRs	0	37,294	0	37,294
Cash flow dependent \| Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment in loans modified in TDRs	0	0	0	0
SVB Private Bank
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment in loans modified in TDRs	0	0	0	0
Balance sheet dependent
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment in loans modified in TDRs	0	0	0	0
Premium wine
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment in loans modified in TDRs	998	0	998	0
Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment in loans modified in TDRs	0	0	0	0
SBA loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment in loans modified in TDRs	$ 0	$ 0	$ 0	$ 0

Loans, Allowance for Loan Lo_14

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Allowance for Credit Losses: Unfunded Credit Commitments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	$ 589,828	$ 301,888	$ 304,924	$ 280,903
Provision for credit losses	(54,106)	35,985	246,694	80,954
Foreign currency translation adjustments	1,331	(531)	94	(325)
Allowance for credit loss, ending balance	512,958	304,410	512,958	304,410
Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance			25,464
Unfunded Credit Commitments
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	99,294	62,664	67,656	55,183
Provision for credit losses	2,019	551	11,132	8,079
Foreign currency translation adjustments	202	(107)	(99)	(154)
Allowance for credit loss, ending balance	101,515	63,108	101,515	63,108
Unfunded Credit Commitments \| Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	$ 0	$ 0	$ 22,826	$ 0

Leases - Lease Asset and Liabil

Leases - Lease Asset and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Right-of-use assets - operating leases	$ 220,493	$ 197,365
Lease liabilities - operating leases	$ 246,652	$ 218,847

Leases - Lease Expense Componen

Leases - Lease Expense Components (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Leases [Abstract]
Operating lease cost	$ 11,998	$ 10,120	$ 35,040	$ 29,099
Short-term lease cost	333	370	1,092	1,214
Variable lease cost	830	903	2,548	2,683
Less: sublease income	(346)	(1,140)	(1,633)	(3,363)
Total lease cost, net	12,815	10,253	37,047	29,633
Cash paid for operating leases	12,273	11,514	36,753	32,752
Operating leases	$ 14,741	$ 7,770	$ 55,316	$ 7,770
Weighted-average remaining term (in years) - operating leases	6 years 1 month 17 days		6 years 1 month 17 days		6 years 3 months 14 days
Weighted-average discount rate - operating leases	2.54%		2.54%		2.92%

Leases - Schedule Of Future Lea

Leases - Schedule Of Future Lease Payments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Leases [Abstract]
2020 (excluding the nine months ended September 30, 2020)	$ 12,782
2021	50,271
2022	45,430
2023	44,337
2024	38,437
2025 and thereafter	75,799
Total future lease payments	267,056
Less: imputed interest	(20,404)
Lease liabilities - operating leases	246,652	$ 218,847
Operating leases not yet commenced	$ 2,800
Lower Limit
Lessee, Lease, Description [Line Items]
Term of leases not yet commenced	2 years
Upper Limit
Lessee, Lease, Description [Line Items]
Term of leases not yet commenced	10 years

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Dec. 31, 2019	Jan. 04, 2019
Goodwill [Line Items]
Goodwill	$ 137,823	$ 137,823
Amortization expense	$ 4,000
SVB Leerink
Goodwill [Line Items]
Goodwill			$ 137,800

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Other intangible assets:
Estimated Fair Value	$ 60,900	$ 60,900
Accumulated Amortization	15,520	11,483
Net Carrying Amount	45,380	49,417
Customer relationships
Other intangible assets:
Estimated Fair Value	42,000	42,000
Accumulated Amortization	6,682	3,818
Net Carrying Amount	35,318	38,182
Other
Other intangible assets:
Estimated Fair Value	18,900	18,900
Accumulated Amortization	8,838	7,665
Net Carrying Amount	$ 10,062	$ 11,235

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Future Amortization Expense (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
2020 (excluding the nine months ended September 30, 2020)	$ 1,345
2021	4,732
2022	4,732
2023	4,732
2024	4,732
2025 and thereafter	25,107
Net Carrying Amount	$ 45,380	$ 49,417

Short-Term Borrowings and Lon_3

Short-Term Borrowings and Long-Term Debt - Outstanding Short Term Borrowings and Long Term Debt (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Jun. 05, 2020	Dec. 31, 2019
Debt Outstanding [Line Items]
Short-term borrowings	$ 19,068		$ 17,430
Long-term debt	$ 843,430		347,987
Senior Notes \| 3.50% Senior Notes
Debt Outstanding [Line Items]
Maturity Date	Jan. 29, 2025
Principal value at period end	$ 350,000
Long-term debt	$ 348,257		$ 347,987
Interest rate on senior notes	3.50%		3.50%
Senior Notes \| 3.125% Senior Notes
Debt Outstanding [Line Items]
Maturity Date	Jun. 5, 2030
Principal value at period end	$ 500,000	$ 500,000
Long-term debt	$ 495,173		$ 0
Interest rate on senior notes	3.125%
Other short-term borrowings
Debt Outstanding [Line Items]
Principal value at period end	$ 19,068
Short-term borrowings	$ 19,068		$ 17,430

Short-Term Borrowings and Lon_4

Short-Term Borrowings and Long-Term Debt - Outstanding Short Term Borrowings and Long Term Debt (Additional Information) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Debt Disclosure [Abstract]
Interest expense on debt	$ 7.2	$ 8.1	$ 17.9	$ 27.6
Weighted average interest rate on short-term borrowings	8.00%		8.00%		155.00%

Short-Term Borrowings and Lon_5

Short-Term Borrowings and Long-Term Debt - Short-term Borrowings (Details) $ in Billions	Sep. 30, 2020USD ($)
Short-term FHLB advances
Debt Disclosure [Line Items]
FHLB advances	$ 6.6
Unused borrowing capacity	5.5
Federal Reserve Bank Advances
Debt Disclosure [Line Items]
Line of credit, remaining borrowing capacity	0.9
Federal funds lines
Debt Disclosure [Line Items]
Line of credit, remaining borrowing capacity	1.9
Securities sold under agreement to repurchase
Debt Disclosure [Line Items]
Line of credit, remaining borrowing capacity	$ 3.3

Short-Term Borrowings and Lon_6

Short-Term Borrowings and Long-Term Debt - Senior Notes (Details) - USD ($) $ in Thousands	Jun. 05, 2020	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Debt Instrument [Line Items]
Proceeds from issuance of long-term debt	$ 495,400	$ 495,024	$ 0
Long-term debt		843,430		$ 347,987
Debt Issuance Costs, Gross		4,400
Senior Notes \| 3.125% Senior Notes
Debt Instrument [Line Items]
Debt issuance, principal value	500,000	$ 500,000
Interest rate on senior notes		3.125%
Long-term debt		$ 495,173		$ 0
Debt instrument, unamortized discount	$ 400

Derivative Financial Instrume_3

Derivative Financial Instruments - Interest Rate Risk (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)
Derivative [Line Items]
Unrealized gain on terminated cash flow hedge remaining in AOCI, before tax	$ 195
Unrealized gain on terminated cash flow hedge remaining in AOCI, net of tax	$ 141
Term unrealized gains reclassified into earnings	5 years
Derivatives designated as hedging instruments \| Interest rate swaps
Derivative [Line Items]
Derivative notional amount	$ 5,000
Derivatives net asset fair value	$ 227.5

Derivative Financial Instrume_4

Derivative Financial Instruments - Total Notional or Contractual Amounts, Fair Value, Collateral and Net Exposure of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Derivative [Line Items]
Derivative Assets	$ 224,861	$ 167,341
Derivative Liabilities	137,781	137,984
Derivative Assets, Total	427,045	332,814
Derivative Liabilities, Total	137,781	137,984
Reduction in derivative liabilities due to rules of clearing houses	59,200	17,400
Interest rate swaps
Derivative [Line Items]
Derivative Assets	0	22,676
Derivative Liabilities	0	25,623
Foreign exchange forwards
Derivative [Line Items]
Derivative Assets	142,605	114,546
Derivative Liabilities	109,237	96,899
Client foreign currency options
Derivative [Line Items]
Derivative Assets	2,986	1,308
Derivative Liabilities	2,986	1,308
Client interest rate derivatives
Derivative [Line Items]
Derivative Assets	79,270	28,811
Derivative Liabilities	25,558	14,154
Derivatives designated as hedging instruments \| Interest rate swaps \| Other assets
Derivative [Line Items]
Derivative Asset, Notional or Contractual Amount	0	1,915,000
Derivative Assets	0	22,676
Derivatives designated as hedging instruments \| Interest rate swaps \| Other liabilities
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	0	3,085,000
Derivative Liabilities	0	25,623
Derivatives not designated as hedging instruments
Derivative [Line Items]
Derivative Assets	427,045	310,138
Derivative Liabilities	137,781	112,361
Derivatives not designated as hedging instruments \| Foreign exchange forwards \| Other assets
Derivative [Line Items]
Derivative Asset, Notional or Contractual Amount	462,765
Derivative Liabilities	4,083
Derivatives not designated as hedging instruments \| Foreign exchange forwards \| Other liabilities
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	59,992	300,250
Derivative Liabilities	278	2,154
Derivatives not designated as hedging instruments \| Equity warrant assets \| Other assets
Derivative [Line Items]
Derivative Asset, Notional or Contractual Amount	256,774	225,893
Derivative Assets	202,184	165,473
Derivatives not designated as hedging instruments \| Client foreign exchange forwards \| Other assets
Derivative [Line Items]
Derivative Asset, Notional or Contractual Amount	6,955,487	4,661,517
Derivative Assets	138,522	114,546
Derivatives not designated as hedging instruments \| Client foreign exchange forwards \| Other liabilities
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	5,754,213	4,326,059
Derivative Liabilities	108,959	94,745
Derivatives not designated as hedging instruments \| Client foreign currency options \| Other assets
Derivative [Line Items]
Derivative Asset, Notional or Contractual Amount	111,107	154,985
Derivative Assets	2,986	1,308
Derivatives not designated as hedging instruments \| Client foreign currency options \| Other liabilities
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	111,107	154,985
Derivative Liabilities	2,986	1,308
Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other assets
Derivative [Line Items]
Derivative Asset, Notional or Contractual Amount	916,573	1,275,190
Derivative Assets	79,270	28,811
Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other liabilities
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	1,048,715	1,372,914
Derivative Liabilities	$ 25,558	$ 14,154

Derivative Financial Instrume_5

Derivative Financial Instruments - Summary of Derivative Activity and Related Impact on Consolidated Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Interest rate risks \| Derivatives designated as hedging instruments \| Interest income - loans
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	$ 16,004	$ (2,713)	$ 33,924	$ (3,224)
Currency exchange risk \| Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	(2,259)	(64)	128	(266)
Currency exchange risk \| Derivatives not designated as hedging instruments \| Revaluations of internal foreign currency instruments, net \| Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	17,085	(8,724)	20,138	(5,183)
Currency exchange risk \| Derivatives not designated as hedging instruments \| Foreign exchange forward contracts, net \| Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	(19,344)	8,660	(20,010)	4,917
Other derivative instruments \| Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	1,712	(14)	(720)	439
Other derivative instruments \| Derivatives not designated as hedging instruments \| Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	31,151	(1,123)	26,533	(2,619)
Other derivative instruments \| Derivatives not designated as hedging instruments \| Revaluations of internal foreign currency instruments, net \| Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	71	(2,181)	(3,302)	(14,793)
Other derivative instruments \| Derivatives not designated as hedging instruments \| Foreign exchange forward contracts, net \| Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	1,641	2,167	2,582	15,232
Equity warrant assets
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives			4,270	(12,801)
Equity warrant assets \| Derivatives not designated as hedging instruments \| Gains on equity warrant assets, net
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	$ 53,766	$ 37,561	$ 93,667	$ 107,213

Derivative Financial Instrume_6

Derivative Financial Instruments - Balance Sheet Offsetting, Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Derivative Assets
Gross Amounts of Recognized Assets	$ 224,861	$ 167,341
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	224,861	167,341
Financial Instruments (Collateral)	(138,177)	(89,112)
Cash Collateral Received	(19,068)	(17,430)
Net Amount	67,616	60,799
Reverse repurchase, securities borrowing, and similar arrangements
Gross Amounts of Recognized Assets	450,164	289,340
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	450,164	289,340
Financial Instruments (Collateral)	(450,164)	(289,340)
Cash Collateral Received	0	0
Net Amount	0	0
Total
Gross Amounts of Recognized Assets	675,025	456,681
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	675,025	456,681
Financial Instruments (Collateral)	(588,341)	(378,452)
Cash Collateral Received	(19,068)	(17,430)
Net Amount	67,616	60,799
Interest rate swaps
Derivative Assets
Gross Amounts of Recognized Assets	0	22,676
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	0	22,676
Derivative Asset, Not Offset, Policy Election Deduction	0	(22,598)
Cash Collateral Received	0	0
Net Amount	0	78
Foreign exchange forwards
Derivative Assets
Gross Amounts of Recognized Assets	142,605	114,546
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	142,605	114,546
Derivative Asset, Not Offset, Policy Election Deduction	(56,584)	(36,855)
Cash Collateral Received	(19,049)	(17,095)
Net Amount	66,972	60,596
Client foreign currency options
Derivative Assets
Gross Amounts of Recognized Assets	2,986	1,308
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	2,986	1,308
Derivative Asset, Not Offset, Policy Election Deduction	(2,323)	(848)
Cash Collateral Received	(19)	(335)
Net Amount	644	125
Client interest rate derivatives
Derivative Assets
Gross Amounts of Recognized Assets	79,270	28,811
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	79,270	28,811
Derivative Asset, Not Offset, Policy Election Deduction	(79,270)	(28,811)
Cash Collateral Received	0	0
Net Amount	$ 0	$ 0

Derivative Financial Instrume_7

Derivative Financial Instruments - Balance Sheet Offsetting, Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Derivative Liabilities
Gross Amounts of Recognized Liabilities	$ 137,781	$ 137,984
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	137,781	137,984
Financial Instruments (Collateral)	(50,506)	(56,521)
Cash Collateral Pledged	(37,816)	(38,913)
Net Amount	49,459	42,550
Repurchase, securities lending, and similar arrangements
Securities Sold under Agreements to Repurchase, Gross	0	0
Securities Sold under Agreements to Repurchase, Asset	0	0
Securities Sold under Agreements to Repurchase	0	0
Financial Instruments (Collateral)	0	0
Cash Collateral Pledged	0	0
Net Amount	0	0
Total
Gross Amounts of Recognized Liabilities	137,781	137,984
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	137,781	137,984
Financial Instruments (Collateral)	(50,506)	(56,521)
Cash Collateral Pledged	(37,816)	(38,913)
Net Amount	49,459	42,550
Interest rate swaps
Derivative Liabilities
Gross Amounts of Recognized Liabilities	0	25,623
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	0	25,623
Derivative Liability, Not Offset, Policy Election Deduction	0	(22,676)
Cash Collateral Pledged	0	(2,947)
Net Amount	0	0
Foreign exchange forwards
Derivative Liabilities
Gross Amounts of Recognized Liabilities	109,237	96,899
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	109,237	96,899
Derivative Liability, Not Offset, Policy Election Deduction	(49,862)	(33,314)
Cash Collateral Pledged	(12,918)	(22,030)
Net Amount	46,457	41,555
Client foreign currency options
Derivative Liabilities
Gross Amounts of Recognized Liabilities	2,986	1,308
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	2,986	1,308
Derivative Liability, Not Offset, Policy Election Deduction	(644)	(531)
Cash Collateral Pledged	0	0
Net Amount	2,342	777
Client interest rate derivatives
Derivative Liabilities
Gross Amounts of Recognized Liabilities	25,558	14,154
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	25,558	14,154
Derivative Liability, Not Offset, Policy Election Deduction	0	0
Cash Collateral Pledged	(24,898)	(13,936)
Net Amount	$ 660	$ 218

Noninterest Income - Summary of

Noninterest Income - Summary of Noninterest Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Other Income and Expenses [Abstract]
Gains on investment securities, net	$ 189,837	$ 29,849	$ 270,760	$ 106,575
Gains on equity warrant assets, net	53,766	37,561	93,667	107,213
Client investment fees	31,914	46,679	107,192	136,905
Foreign exchange fees	43,881	40,309	127,642	116,863
Credit card fees	22,756	30,158	72,348	86,431
Deposit service charges	22,015	22,482	67,115	65,496
Lending related fees	13,562	11,707	37,851	36,857
Letters of credit and standby letters of credit fees	12,192	10,842	35,155	31,205
Investment banking revenue	92,181	38,516	280,551	137,005
Commissions	16,257	12,275	49,197	40,812
Other	49,222	13,631	76,887	42,773
Total noninterest income	$ 547,583	$ 294,009	$ 1,218,365	$ 908,135

Noninterest Income - Gains and

Noninterest Income - Gains and Losses on Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Other Income and Expenses [Abstract]
Total net gains on non-marketable and other equity securities	$ 189,837	$ 29,849	$ 209,595	$ 110,480
Gains (losses) on sales of available-for-sale securities, net	0	0	61,165	(3,905)
Gains on investment securities, net	$ 189,837	$ 29,849	$ 270,760	$ 106,575

Noninterest Income - Gains an_2

Noninterest Income - Gains and Losses on Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Other Income and Expenses [Abstract]
Gains on exercises, net	$ 23,940	$ 30,047	$ 59,370	$ 90,357
Terminations	(361)	(481)	(1,332)	(2,931)
Changes in fair value, net	30,187	7,995	35,629	19,787
Gains on equity warrant assets, net	$ 53,766	$ 37,561	$ 93,667	$ 107,213

Noninterest Income - Client Inv

Noninterest Income - Client Investment Fees (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 247,037	$ 205,905	$ 756,847	$ 644,533
Sweep money market fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	18,155	26,202	60,617	79,698
Asset management fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	12,172	7,256	32,905	20,883
Repurchase agreement fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,587	13,221	13,670	36,324
Client investment fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 31,914	$ 46,679	$ 107,192	$ 136,905

Noninterest Income - Foreign Ex

Noninterest Income - Foreign Exchange Fees (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 247,037	$ 205,905	$ 756,847	$ 644,533
Revenue not from contract with customer	300,546	88,104	461,518	263,602
Foreign exchange fees	43,881	40,309	127,642	116,863
Spot contract commissions
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	38,794	36,836	112,821	106,561
Forward contract commissions
Disaggregation of Revenue [Line Items]
Revenue not from contract with customer	4,613	3,371	14,004	10,144
Option premium fees
Disaggregation of Revenue [Line Items]
Revenue not from contract with customer	$ 474	$ 102	$ 817	$ 158

Noninterest Income - Credit Car

Noninterest Income - Credit Card Fees (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Card interchange fees, net	$ 18,168	$ 24,560	$ 55,257	$ 68,808
Revenue from contracts with customers	247,037	205,905	756,847	644,533
Revenue not from contract with customer	300,546	88,104	461,518	263,602
Total credit card fees	22,756	30,158	72,348	86,431
Merchant service fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	3,670	3,943	13,727	12,763
Card service fees
Disaggregation of Revenue [Line Items]
Revenue not from contract with customer	$ 918	$ 1,655	$ 3,364	$ 4,860

Noninterest Income - Lending Re

Noninterest Income - Lending Related Fees (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lending related fees	$ 13,562	$ 11,707	$ 37,851	$ 36,857
Unused commitment fees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lending related fees	9,872	8,339	26,602	25,060
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lending related fees	$ 3,690	$ 3,368	$ 11,249	$ 11,797

Noninterest Income - Investment

Noninterest Income - Investment Banking Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Investment banking revenue:
Underwriting fees	$ 85,009	$ 31,016	$ 247,384	$ 109,371
Advisory fees	1,761	5,200	26,170	22,789
Private placements and other	5,411	2,300	6,997	4,845
Total investment banking revenue	$ 92,181	$ 38,516	$ 280,551	$ 137,005

Noninterest Income - Summary _2

Noninterest Income - Summary of Other Noninterest Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Trading Activity, Gains and Losses, Net [Line Items]
Revenue from contracts with customers	$ 247,037	$ 205,905	$ 756,847	$ 644,533
Net gains on revaluation of foreign currency instruments, net of foreign exchange forward contracts	(547)	(78)	(592)	173
Gains from conversion of convertible debt options	30,018	0	30,018	0
Other service revenue	10,082	5,216	21,039	18,308
Other	49,222	13,631	76,887	42,773
Fund management fees
Trading Activity, Gains and Losses, Net [Line Items]
Revenue from contracts with customers	$ 9,669	$ 8,493	$ 26,422	$ 24,292

Noninterest Income - Disaggrega

Noninterest Income - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 247,037	$ 205,905	$ 756,847	$ 644,533
Revenues outside the scope of ASC 606	300,546	88,104	461,518	263,602
Noninterest income	547,583	294,009	1,218,365	908,135
Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	125,894	145,521	392,661	439,178
Revenues outside the scope of ASC 606	21,700	15,508	55,241	32,314
Noninterest income	147,594	161,029	447,902	471,492
SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	915	633	2,460	1,834
Revenues outside the scope of ASC 606	1	1	26	(5)
Noninterest income	916	634	2,486	1,829
SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	9,852	7,063	25,733	20,050
Revenues outside the scope of ASC 606	50,528	27,892	61,015	79,810
Noninterest income	60,380	34,955	86,748	99,860
SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	109,868	52,221	334,038	182,059
Revenues outside the scope of ASC 606	3,783	726	6,107	6,005
Noninterest income	113,651	52,947	340,145	188,064
Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	508	467	1,955	1,412
Revenues outside the scope of ASC 606	224,534	43,977	339,129	145,478
Noninterest income	225,042	44,444	341,084	146,890
Investment banking revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	31,914	46,679	107,192	136,905
Investment banking revenue \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	31,132	46,171	105,176	135,551
Investment banking revenue \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	782	508	2,016	1,354
Investment banking revenue \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment banking revenue \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment banking revenue \| Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Spot contract commissions
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	38,794	36,836	112,821	106,561
Spot contract commissions \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	38,546	36,644	112,086	105,877
Spot contract commissions \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	108	89	367	376
Spot contract commissions \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Spot contract commissions \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Spot contract commissions \| Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	140	103	368	308
Card interchange fees, gross
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	29,547	35,048	92,070	115,986
Card interchange fees, gross \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	29,255	34,867	90,909	115,468
Card interchange fees, gross \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	5	0	17	0
Card interchange fees, gross \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Card interchange fees, gross \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Card interchange fees, gross \| Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	287	181	1,144	518
Merchant service fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	3,670	3,943	13,727	12,764
Merchant service fees \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	3,670	3,943	13,727	12,764
Merchant service fees \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Merchant service fees \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Merchant service fees \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Merchant service fees \| Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Deposit service charges
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	22,015	22,482	67,115	65,496
Deposit service charges \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	21,914	22,263	66,612	64,806
Deposit service charges \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	20	36	60	104
Deposit service charges \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Deposit service charges \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Deposit service charges \| Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	81	183	443	586
Investment banking revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	92,181	38,516	280,551	137,005
Investment banking revenue \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment banking revenue \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment banking revenue \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment banking revenue \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	92,181	38,516	280,551	137,005
Investment banking revenue \| Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Commissions
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	16,257	12,275	49,197	40,812
Commissions \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Commissions \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Commissions \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Commissions \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	16,257	12,275	49,197	40,812
Commissions \| Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Fund management fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	9,669	8,493	26,422	24,292
Fund management fees \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Fund management fees \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Fund management fees \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	8,239	7,063	22,132	20,050
Fund management fees \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,430	1,430	4,290	4,242
Fund management fees \| Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Performance fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,613		3,601
Performance fees \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Performance fees \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Performance fees \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,613		3,601
Performance fees \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Performance fees \| Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Correspondent bank rebates
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,377	1,633	4,151	4,712
Correspondent bank rebates \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,377	1,633	4,151	4,712
Correspondent bank rebates \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Correspondent bank rebates \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Correspondent bank rebates \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Correspondent bank rebates \| Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 0	$ 0	$ 0	$ 0

Other Noninterest Expense - Sum

Other Noninterest Expense - Summary of Other Noninterest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Other Income and Expenses [Abstract]
Lending and other client related processing costs	$ 7,194	$ 7,502	$ 23,155	$ 21,442
Correspondent bank fees	3,581	3,657	11,400	10,970
Investment banking activities	2,835	1,864	13,633	9,918
Trade order execution costs	2,806	2,615	8,165	7,959
Data processing services	3,984	3,066	10,945	8,624
Telephone	2,342	2,466	6,458	7,629
Dues and publications	1,159	1,055	3,199	3,439
Postage and supplies	538	720	2,117	2,168
Other	13,114	11,161	38,831	32,910
Total other noninterest expense	$ 37,553	$ 34,106	$ 117,903	$ 105,059

Segment Reporting - Additional

Segment Reporting - Additional Information (Details)	3 Months Ended
Segment Reporting - Additional Information (Details)	Sep. 30, 2020Segment
Segment Reporting [Abstract]
Number of reportable segments	4

Segment Reporting - Segment Inf

Segment Reporting - Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Net interest income (loss)	$ 527,740	$ 520,644	$ 1,564,804	$ 1,562,933
Provision for credit losses	52,018	(36,536)	(257,943)	(89,033)
Noninterest income	547,583	294,009	1,218,365	908,135
Noninterest expense	(491,021)	(391,324)	(1,370,242)	(1,140,510)
Income before income tax expense	636,320	386,793	1,154,984	1,241,525
Total average loans, amortized cost	37,318,600	29,822,426	35,835,927	29,210,960
Total average assets	88,348,366	65,327,748	79,760,650	61,214,132
Total average deposits	77,680,016	57,234,969	69,166,064	53,331,344
Global Commercial Bank
Segment Reporting Information [Line Items]
Noninterest income	147,594	161,029	447,902	471,492
SVB Private Bank
Segment Reporting Information [Line Items]
Noninterest income	916	634	2,486	1,829
SVB Capital
Segment Reporting Information [Line Items]
Noninterest income	60,380	34,955	86,748	99,860
SVB Leerink
Segment Reporting Information [Line Items]
Noninterest income	113,651	52,947	340,145	188,064
Operating segments \| Global Commercial Bank
Segment Reporting Information [Line Items]
Net interest income (loss)	512,963	455,161	1,461,768	1,360,997
Provision for credit losses	37,847	(34,075)	(200,020)	(79,175)
Noninterest income	147,594	161,029	447,902	471,492
Noninterest expense	(258,035)	(213,786)	(724,233)	(617,933)
Income before income tax expense	440,369	368,329	985,417	1,135,381
Total average loans, amortized cost	30,763,715	25,839,647	30,126,870	25,457,997
Total average assets	77,802,730	58,384,473	69,212,733	54,196,976
Total average deposits	74,825,725	55,250,154	66,408,359	51,352,644
Operating segments \| SVB Private Bank
Segment Reporting Information [Line Items]
Net interest income (loss)	19,145	12,772	52,952	37,200
Provision for credit losses	14,881	(1,910)	(44,194)	(1,779)
Noninterest income	916	634	2,486	1,829
Noninterest expense	(12,293)	(11,638)	(32,547)	(30,015)
Income before income tax expense	22,649	(142)	(21,303)	7,235
Total average loans, amortized cost	4,263,324	3,400,889	4,053,018	3,235,943
Total average assets	4,297,011	3,431,313	4,087,786	3,264,071
Total average deposits	2,163,903	1,497,303	2,069,196	1,461,170
Operating segments \| SVB Capital
Segment Reporting Information [Line Items]
Net interest income (loss)	2	9	28	20
Provision for credit losses		0	0	0
Noninterest income	60,380	34,955	86,748	99,860
Noninterest expense	(11,198)	(8,129)	(28,040)	(21,794)
Income before income tax expense	49,184	26,835	58,736	78,086
Total average loans, amortized cost	0	0	0	0
Total average assets	413,882	396,031	430,391	382,707
Total average deposits	0	0	0	0
Operating segments \| SVB Leerink
Segment Reporting Information [Line Items]
Net interest income (loss)	175	277	373	961
Provision for credit losses		0	0	0
Noninterest income	113,651	52,947	340,145	188,064
Noninterest expense	(77,567)	(55,200)	(248,254)	(177,675)
Income before income tax expense	36,259	(1,976)	92,264	11,350
Total average loans, amortized cost	0	0	0	0
Total average assets	605,263	428,848	514,836	380,290
Total average deposits	0	0	0	0
Other Items
Segment Reporting Information [Line Items]
Net interest income (loss)	(4,545)	52,425	49,683	163,755
Provision for credit losses	(710)	(551)	(13,729)	(8,079)
Noninterest income	225,042	44,444	341,084	146,890
Noninterest expense	(131,928)	(102,571)	(337,168)	(293,093)
Income before income tax expense	87,859	(6,253)	39,870	9,473
Total average loans, amortized cost	2,291,561	581,890	1,656,039	517,020
Total average assets	5,229,480	2,687,083	5,514,904	2,990,088
Total average deposits	$ 690,388	$ 487,512	$ 688,509	$ 517,530

Segment Reporting - Segment I_2

Segment Reporting - Segment Information (Additional Information) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Goodwill	$ 137,823		$ 137,823		$ 137,823
Operating segments \| Global Commercial Bank
Segment Reporting Information [Line Items]
Depreciation and amortization	6,400	$ 5,100	17,700	$ 14,800
Operating segments \| SVB Leerink
Segment Reporting Information [Line Items]
Goodwill	$ 137,800		$ 137,800

Off-Balance Sheet Arrangement_3

Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Summary Information Related to Commitments to Extend Credit (Excluding Letters of Credit) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Disclosure Off Balance Sheet Arrangements Guarantees And Other Commitments Additional Information [Abstract]
Fixed interest rate commitments	$ 2,474,804		$ 2,434,042
Variable interest rate commitments	24,796,923		19,309,317
Total loan commitments available for funding	27,271,727		21,743,359
Commercial and standby letters of credit	3,058,069		2,778,561
Total unfunded credit commitments	30,329,796		24,521,920
Commitments unavailable for funding	2,519,517		3,051,075
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses: loans	512,958	$ 589,828	304,924	$ 304,410	$ 301,888	$ 280,903
Unfunded Credit Commitments
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses: loans	$ 101,515	$ 99,294	$ 67,656	$ 63,108	$ 62,664	$ 55,183

Off-Balance Sheet Arrangement_4

Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Summary of Commercial and Standby Letters of Credit (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Guarantor Obligations [Line Items]
Expires in One Year or Less	$ 2,949,560
Expires After One Year	108,509
Total Amount Outstanding	3,058,069	$ 2,778,561
Maximum Amount of Future Payments	3,058,069
Financial standby letters of credit
Guarantor Obligations [Line Items]
Expires in One Year or Less	2,838,280
Expires After One Year	90,452
Total Amount Outstanding	2,928,732
Maximum Amount of Future Payments	2,928,732
Performance standby letters of credit
Guarantor Obligations [Line Items]
Expires in One Year or Less	109,224
Expires After One Year	18,057
Total Amount Outstanding	127,281
Maximum Amount of Future Payments	127,281
Commercial letters of credit
Guarantor Obligations [Line Items]
Expires in One Year or Less	2,056
Expires After One Year	0
Total Amount Outstanding	2,056
Maximum Amount of Future Payments	$ 2,056

Off-Balance Sheet Arrangement_5

Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Summary of Commercial and Standby Letters of Credit (Additional Information) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Standby Letter of Credit
Commitments and Contingencies Disclosure [Line Items]
Deferred fees	$ 16.5	$ 17.2
Collateral in the form of cash	$ 1,700
Consolidated venture capital and private equity fund investments
Commitments and Contingencies Disclosure [Line Items]
Commitments to invest, period from the inception of the fund	10 years
Call unrestricted, percentage of committed capital	100.00%
Consolidated venture capital and private equity fund investments \| Lower Limit
Commitments and Contingencies Disclosure [Line Items]
Expected commitment period to invest in venture capital and private equity funds (in years)	5 years
Consolidated venture capital and private equity fund investments \| Upper Limit
Commitments and Contingencies Disclosure [Line Items]
Expected commitment period to invest in venture capital and private equity funds (in years)	7 years

Off-Balance Sheet Arrangement_6

Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Total Capital Commitments, Unfunded Capital Commitments, and Our Ownership in Each Fund (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2020USD ($)
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Unfunded Commitments	$ 4,406
Capital Preferred Return Fund, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Unfunded Commitments	1,517
Growth Partners, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Unfunded Commitments	2,513
Strategic Investors Fund, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Unfunded Commitments	376
Parent Company
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	464,881
SVBFG Unfunded Commitments	19,353
Parent Company \| CP II, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	1,200
SVBFG Unfunded Commitments	$ 162
SVBFG Ownership of each Fund	5.10%
Parent Company \| Strategic Investors Fund II, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 15,000
SVBFG Unfunded Commitments	$ 1,050
SVBFG Ownership of each Fund	8.60%
Parent Company \| Strategic Investors Fund III, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 15,000
SVBFG Unfunded Commitments	$ 1,275
SVBFG Ownership of each Fund	5.90%
Parent Company \| Strategic Investors Fund IV, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 12,239
SVBFG Unfunded Commitments	$ 2,325
SVBFG Ownership of each Fund	5.00%
Parent Company \| Strategic Investors Fund V funds
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 515
SVBFG Unfunded Commitments	131
Parent Company \| Other venture capital and private equity fund investments
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	25,197
SVBFG Unfunded Commitments	6,258
Parent Company \| Debt funds (equity method accounting)
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	58,733
SVBFG Unfunded Commitments	240
Parent Company \| Other fund investments
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	278,339
SVBFG Unfunded Commitments	5,614
Parent Company \| CP I, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	6,000
SVBFG Unfunded Commitments	$ 270
SVBFG Ownership of each Fund	10.70%
Parent Company \| Capital Preferred Return Fund, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 12,688
SVBFG Unfunded Commitments	$ 0
SVBFG Ownership of each Fund	20.00%
Parent Company \| Growth Partners, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 24,670
SVBFG Unfunded Commitments	$ 1,340
SVBFG Ownership of each Fund	33.00%
Parent Company \| Strategic Investors Fund, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 15,300
SVBFG Unfunded Commitments	$ 688
SVBFG Ownership of each Fund	12.60%

Off-Balance Sheet Arrangement_7

Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Total Capital Commitments, Unfunded Capital Commitments, and Our Ownership in Each Fund (Additional Information) (Details) - Investment	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Upper Limit
Venture Capital and Private Equity Fund Investments [Line Items]
Percentage of ownership	5.00%
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Equity method accounting \| CP II, LP
Venture Capital and Private Equity Fund Investments [Line Items]
Percentage of ownership	5.10%	5.10%
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Equity method accounting \| Other fund investments
Venture Capital and Private Equity Fund Investments [Line Items]
Number of other funds with investment commitments	185
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Equity method accounting \| Other fund investments \| Upper Limit
Venture Capital and Private Equity Fund Investments [Line Items]
Percentage of ownership	5.00%
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Direct ownership interest \| Equity method accounting \| CP II, LP
Venture Capital and Private Equity Fund Investments [Line Items]
Percentage of ownership	1.30%
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Indirect ownership interest \| Equity method accounting \| CP II, LP
Venture Capital and Private Equity Fund Investments [Line Items]
Percentage of ownership	3.80%

Off-Balance Sheet Arrangement_8

Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Remaining Unfunded Commitments to Venture Capital or Private Equity Funds by our Consolidated Managed Funds (Details) $ in Thousands	Sep. 30, 2020USD ($)
Commitments and Contingencies Disclosure [Line Items]
Unfunded Commitments	$ 4,406
Strategic Investors Fund, LP
Commitments and Contingencies Disclosure [Line Items]
Unfunded Commitments	376
Capital Preferred Return Fund, LP
Commitments and Contingencies Disclosure [Line Items]
Unfunded Commitments	1,517
Growth Partners, LP
Commitments and Contingencies Disclosure [Line Items]
Unfunded Commitments	$ 2,513

Income Taxes (Details)

Income Taxes (Details) $ in Millions	Sep. 30, 2020USD ($)
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 15
Income tax reduction from recognized tax benefit	$ 11.8

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020USD ($)	Sep. 30, 2020USD ($)	Dec. 31, 2019USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 25,904,324	$ 25,904,324	$ 14,014,919
Derivative Assets	224,861	224,861	167,341
Derivative Liabilities	137,781	137,781	137,984
Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	22,676
Derivative Liabilities	0	0	25,623
Client interest rate derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	79,270	79,270	28,811
Derivative Liabilities	25,558	25,558	14,154
Derivatives not designated as hedging instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	427,045	427,045	310,138
Derivative Liabilities	137,781	137,781	112,361
Derivatives not designated as hedging instruments \| Equity warrant assets \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	202,184	202,184	165,473
Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	79,270	79,270	28,811
Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	25,558	25,558	14,154
U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	4,547,294	4,547,294	6,894,010
U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	152,526	152,526	99,547
Foreign government debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	23,449	23,449	9,038
Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	9,770,313	9,770,313	4,148,791
Residential mortgage-backed securities \| Agency-issued collateralized mortgage obligations—fixed rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	7,315,973	7,315,973	1,538,343
Agency-issued commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	4,094,769	4,094,769	1,325,190
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	25,904,324	25,904,324	14,014,919
Total assets	26,787,326	26,787,326	14,672,330
Total liabilities	137,781	137,781	137,984
Recurring \| Derivatives not designated as hedging instruments \| Foreign exchange contract \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	145,591	145,591	115,854
Recurring \| Derivatives not designated as hedging instruments \| Foreign exchange contract \| Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	112,223	112,223	98,207
Recurring \| Derivatives not designated as hedging instruments \| Equity warrant assets \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	202,184	202,184	165,473
Recurring \| Derivatives not designated as hedging instruments \| Interest rate swaps \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets			22,676
Recurring \| Derivatives not designated as hedging instruments \| Interest rate swaps \| Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities			25,623
Recurring \| Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	79,270	79,270	28,811
Recurring \| Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	25,558	25,558	14,154
Recurring \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	455,957	455,957	324,597
Recurring \| Consolidated venture capital and private equity fund investments \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	134	134	134
Recurring \| Other securities \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	229,297	229,297	59,200
Recurring \| U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	4,547,294	4,547,294	6,894,010
Recurring \| U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	152,526	152,526	99,547
Recurring \| Foreign government debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	23,449	23,449	9,038
Recurring \| Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	9,770,313	9,770,313	4,148,791
Recurring \| Residential mortgage-backed securities \| Agency-issued collateralized mortgage obligations—fixed rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	7,315,973	7,315,973	1,538,343
Recurring \| Agency-issued commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	4,094,769	4,094,769	1,325,190
Recurring \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	4,570,743	4,570,743	6,903,048
Total assets	4,596,948	4,596,948	6,920,338
Total liabilities	0	0	0
Recurring \| Level 1 \| Derivatives not designated as hedging instruments \| Foreign exchange contract \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Recurring \| Level 1 \| Derivatives not designated as hedging instruments \| Foreign exchange contract \| Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	0	0	0
Recurring \| Level 1 \| Derivatives not designated as hedging instruments \| Equity warrant assets \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Recurring \| Level 1 \| Derivatives not designated as hedging instruments \| Interest rate swaps \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets			0
Recurring \| Level 1 \| Derivatives not designated as hedging instruments \| Interest rate swaps \| Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities			0
Recurring \| Level 1 \| Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Recurring \| Level 1 \| Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	0	0	0
Recurring \| Level 1 \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	26,205	26,205	17,290
Recurring \| Level 1 \| Consolidated venture capital and private equity fund investments \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	0	0	0
Recurring \| Level 1 \| Other securities \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	26,205	26,205	17,290
Recurring \| Level 1 \| U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	4,547,294	4,547,294	6,894,010
Recurring \| Level 1 \| U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0	0
Recurring \| Level 1 \| Foreign government debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	23,449	23,449	9,038
Recurring \| Level 1 \| Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0	0
Recurring \| Level 1 \| Residential mortgage-backed securities \| Agency-issued collateralized mortgage obligations—fixed rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0	0
Recurring \| Level 1 \| Agency-issued commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0	0
Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	21,333,581	21,333,581	7,111,871
Total assets	21,771,035	21,771,035	7,325,557
Total liabilities	137,781	137,781	137,984
Recurring \| Level 2 \| Derivatives not designated as hedging instruments \| Foreign exchange contract \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	145,591	145,591	115,854
Recurring \| Level 2 \| Derivatives not designated as hedging instruments \| Foreign exchange contract \| Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	112,223	112,223	98,207
Recurring \| Level 2 \| Derivatives not designated as hedging instruments \| Equity warrant assets \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	9,501	9,501	4,435
Recurring \| Level 2 \| Derivatives not designated as hedging instruments \| Interest rate swaps \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets			22,676
Recurring \| Level 2 \| Derivatives not designated as hedging instruments \| Interest rate swaps \| Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities			25,623
Recurring \| Level 2 \| Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	79,270	79,270	28,811
Recurring \| Level 2 \| Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	25,558	25,558	14,154
Recurring \| Level 2 \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	203,092	203,092	41,910
Recurring \| Level 2 \| Consolidated venture capital and private equity fund investments \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	0	0	0
Recurring \| Level 2 \| Other securities \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	203,092	203,092	41,910
Recurring \| Level 2 \| U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0	0
Recurring \| Level 2 \| U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	152,526	152,526	99,547
Recurring \| Level 2 \| Foreign government debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0	0
Recurring \| Level 2 \| Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	9,770,313	9,770,313	4,148,791
Recurring \| Level 2 \| Residential mortgage-backed securities \| Agency-issued collateralized mortgage obligations—fixed rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	7,315,973	7,315,973	1,538,343
Recurring \| Level 2 \| Agency-issued commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	4,094,769	4,094,769	1,325,190
Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0	0
Total assets	192,817	192,817	161,172
Total liabilities	0	0	0
Recurring \| Level 3 \| Noncontrolling Interests
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	120	120	120
Recurring \| Level 3 \| Derivatives not designated as hedging instruments \| Foreign exchange contract \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Recurring \| Level 3 \| Derivatives not designated as hedging instruments \| Foreign exchange contract \| Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	0	0	0
Recurring \| Level 3 \| Derivatives not designated as hedging instruments \| Equity warrant assets \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	192,683	192,683	161,038
Recurring \| Level 3 \| Derivatives not designated as hedging instruments \| Interest rate swaps \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets			0
Recurring \| Level 3 \| Derivatives not designated as hedging instruments \| Interest rate swaps \| Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities			0
Recurring \| Level 3 \| Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Recurring \| Level 3 \| Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	0	0	0
Recurring \| Level 3 \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	134	134	134
Recurring \| Level 3 \| Consolidated venture capital and private equity fund investments \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	134	134	134
Recurring \| Level 3 \| Other securities \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	0	0	0
Recurring \| Level 3 \| U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0	0
Recurring \| Level 3 \| U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0	0
Recurring \| Level 3 \| Foreign government debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0	0
Recurring \| Level 3 \| Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0	0
Recurring \| Level 3 \| Residential mortgage-backed securities \| Agency-issued collateralized mortgage obligations—fixed rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0	0
Recurring \| Level 3 \| Agency-issued commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	0	0	0
Recurring \| Measured at net asset value \| Consolidated venture capital and private equity fund investments \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	$ 226,526	$ 226,526	$ 265,263
Lower Limit \| Other equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value inputs, sales restriction, period	3 years
Lower Limit \| Level 3 \| Equity warrant asset, public portfolio
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value inputs, sales restriction, period	3 months
Upper Limit \| Other equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value inputs, sales restriction, period		6 months
Upper Limit \| Level 3 \| Equity warrant asset, public portfolio
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value inputs, sales restriction, period	6 months
Sales restrictions discount \| Lower Limit \| Other equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	0.10	0.10
Sales restrictions discount \| Lower Limit \| Level 3 \| Equity warrant asset, public portfolio
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	0.100	0.100	0.100
Sales restrictions discount \| Upper Limit \| Other equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	0.20	0.20
Sales restrictions discount \| Upper Limit \| Level 3 \| Equity warrant asset, public portfolio
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	0.200	0.200	0.200

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Additional Information about Level 3 Assets Measured at Fair Value on a Recurring Basis (Details) - Recurring - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 165,359	$ 148,211	$ 161,172	$ 146,278
Total Net Gains Included in Net Income	52,537	39,584	91,229	105,350
Purchases	0	0	0	575
Sales/Exits	(28,760)	(45,634)	(74,115)	(114,103)
Issuances	4,605	4,130	15,894	11,714
Distributions and Other Settlements	0	0	0	3
Transfers Out of Level 3	(924)	(1,116)	(1,363)	(4,642)
Ending Balance	192,817	145,175	192,817	145,175
Equity warrant assets
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	165,225	147,770	161,038	145,199
Total Net Gains Included in Net Income	52,537	39,527	91,224	105,338
Purchases	0	0	0	575
Sales/Exits	(28,760)	(45,270)	(74,110)	(113,143)
Issuances	4,605	4,130	15,894	11,714
Distributions and Other Settlements	0	0	0	0
Transfers Out of Level 3	(924)	(1,116)	(1,363)	(4,642)
Ending Balance	192,683	145,041	192,683	145,041
Non-marketable securities \| Unconsolidated venture capital and private equity fund investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	134	441	134	1,079
Total Net Gains Included in Net Income	0	57	5	12
Purchases	0	0	0	0
Sales/Exits	0	(364)	(5)	(960)
Issuances	0	0	0	0
Distributions and Other Settlements	0	0	0	3
Transfers Out of Level 3	0	0	0	0
Ending Balance	$ 134	$ 134	$ 134	$ 134

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Unrealized Gains Included in Earnings Attributable to Level 3 Assets Held (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Unrealized Gains (Losses) [Line Items]
Unrealized gains included in earnings attributable to Level 3 assets still held	$ 26,360	$ (670)	$ 33,469	$ 21,053
Noncontrolling Interests
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Unrealized Gains (Losses) [Line Items]
Unrealized gains included in earnings attributable to Level 3 assets still held	0	(158)	0	(199)
Equity warrant assets \| Other assets
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Unrealized Gains (Losses) [Line Items]
Unrealized gains included in earnings attributable to Level 3 assets still held	26,360	(727)	33,469	21,041
Fair value accounting \| Non-marketable securities \| Unconsolidated venture capital and private equity fund investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Unrealized Gains (Losses) [Line Items]
Unrealized gains included in earnings attributable to Level 3 assets still held	$ 0	$ 57	$ 0	$ 12

Fair Value of Financial Instr_6

Fair Value of Financial Instruments - Quantitative Information About Significant Unobservable Inputs (Details) - Level 3 - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 1,166	$ 346
Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	191,517	160,692
Unconsolidated venture capital and private equity fund investments
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 134	$ 134

Fair Value of Financial Instr_7

Fair Value of Financial Instruments - Quantitative Information About Significant Unobservable Inputs (Additional Information) (Details)	3 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted average remaining life	2 years 9 months 18 days
Weighted average remaining life	6 years 2 months 12 days
Sales restrictions discount \| Lower Limit \| Other equity securities
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.10
Sales restrictions discount \| Lower Limit \| Level 3 \| Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.100	0.100
Sales restrictions discount \| Upper Limit \| Other equity securities
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.20
Sales restrictions discount \| Upper Limit \| Level 3 \| Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.200	0.200
Sales restrictions discount \| Weighted Average \| Level 3 \| Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.159	0.136
Volatility \| Lower Limit \| Level 3 \| Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.451	0.392
Volatility \| Lower Limit \| Level 3 \| Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.239	0.236
Volatility \| Upper Limit \| Level 3 \| Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.568	0.548
Volatility \| Upper Limit \| Level 3 \| Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.568	0.548
Volatility \| Weighted Average \| Level 3 \| Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.519	0.507
Volatility \| Weighted Average \| Level 3 \| Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.436	0.382
Risk-Free interest rate \| Level 3 \| Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input		0.019
Risk-Free interest rate \| Lower Limit \| Level 3 \| Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.003
Risk-Free interest rate \| Lower Limit \| Level 3 \| Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.0001	0.005
Risk-Free interest rate \| Upper Limit \| Level 3 \| Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.007
Risk-Free interest rate \| Upper Limit \| Level 3 \| Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.0069	0.019
Risk-Free interest rate \| Weighted Average \| Level 3 \| Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.006	0.019
Risk-Free interest rate \| Weighted Average \| Level 3 \| Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.002	0.016
Marketability discount \| Level 3 \| Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.221	0.175
Marketability discount \| Weighted Average \| Level 3 \| Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.221	0.175
Remaining life assumption \| Level 3 \| Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.450	0.450
Remaining life assumption \| Weighted Average \| Level 3 \| Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.450	0.450

Fair Value of Financial Instr_8

Fair Value of Financial Instruments - Summary of Estimated Fair Values of Financial Instruments not Carried at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held-to-maturity securities	$ 13,612,463	$ 14,115,272
Net loans	37,900,933	32,859,712
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	15,687,776	6,781,783
Held-to-maturity securities	12,982,223	13,842,946
Non-marketable securities not measured at net asset value	228,564	195,405
Non-marketable securities measured at net asset value	293,269	235,351
FHLB and Federal Reserve Bank stock	61,232	60,258
Non-maturity deposits	84,438,332	61,569,714
Time deposits	334,687	188,093
Commitments to extend credit	0	0
Carrying Amount \| Short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	19,068	17,430
Carrying Amount \| 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	348,257	347,987
Carrying Amount \| 3.125% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	495,173
Estimate of Fair Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	15,687,776	6,781,783
Held-to-maturity securities	13,612,463	14,115,272
Non-marketable securities not measured at net asset value	228,564	195,405
Non-marketable securities measured at net asset value	293,269	235,351
FHLB and Federal Reserve Bank stock	61,232	60,258
Non-maturity deposits	84,438,332	61,569,714
Time deposits	273,785	187,980
Commitments to extend credit	34,126	27,197
Estimate of Fair Value Measurement \| Short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	19,068	17,430
Estimate of Fair Value Measurement \| 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	378,606	366,856
Estimate of Fair Value Measurement \| 3.125% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	557,495
Estimate of Fair Value Measurement \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	15,687,776	6,781,783
Held-to-maturity securities	0	0
Non-marketable securities not measured at net asset value	0	0
Non-marketable securities measured at net asset value	0	0
FHLB and Federal Reserve Bank stock	0	0
Non-maturity deposits	84,438,332	61,569,714
Time deposits	0	0
Commitments to extend credit	0	0
Estimate of Fair Value Measurement \| Level 1 \| Short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	0	0
Estimate of Fair Value Measurement \| Level 1 \| 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	0	0
Estimate of Fair Value Measurement \| Level 1 \| 3.125% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	0
Estimate of Fair Value Measurement \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Held-to-maturity securities	13,612,463	14,115,272
Non-marketable securities not measured at net asset value	0	0
Non-marketable securities measured at net asset value	0	0
FHLB and Federal Reserve Bank stock	0	0
Non-maturity deposits	0	0
Time deposits	273,785	187,980
Commitments to extend credit	0	0
Estimate of Fair Value Measurement \| Level 2 \| Short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	19,068	17,430
Estimate of Fair Value Measurement \| Level 2 \| 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	378,606	366,856
Estimate of Fair Value Measurement \| Level 2 \| 3.125% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	557,495
Estimate of Fair Value Measurement \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Held-to-maturity securities	0	0
Non-marketable securities not measured at net asset value	228,564	195,405
Non-marketable securities measured at net asset value	0	0
FHLB and Federal Reserve Bank stock	61,232	60,258
Non-maturity deposits	0	0
Time deposits	0	0
Commitments to extend credit	34,126	27,197
Estimate of Fair Value Measurement \| Level 3 \| Short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	0	0
Estimate of Fair Value Measurement \| Level 3 \| 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	0	0
Estimate of Fair Value Measurement \| Level 3 \| 3.125% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	0
Commercial loans \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	33,552,513	29,104,532
Commercial loans \| Estimate of Fair Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	34,091,696	29,615,176
Commercial loans \| Estimate of Fair Value Measurement \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	0	0
Commercial loans \| Estimate of Fair Value Measurement \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	0	0
Commercial loans \| Estimate of Fair Value Measurement \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	34,091,696	29,615,176
Consumer loans \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	4,348,420	3,755,180
Consumer loans \| Estimate of Fair Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	4,418,614	3,820,804
Consumer loans \| Estimate of Fair Value Measurement \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	0	0
Consumer loans \| Estimate of Fair Value Measurement \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	0	0
Consumer loans \| Estimate of Fair Value Measurement \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	$ 4,418,614	$ 3,820,804

Fair Value of Financial Instr_9

Fair Value of Financial Instruments - Summary of Estimated Fair Values of Investments and Remaining Unfunded Commitments for Each Major Category of Investments (Details) $ in Thousands	Sep. 30, 2020USD ($)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Carrying Amount	$ 519,792
Fair Value	519,792
Unfunded Commitments	21,460
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Fair value accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Carrying Amount	226,524
Fair Value	226,524
Unfunded Commitments	9,133
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Equity method accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Carrying Amount	274,721
Fair Value	274,721
Unfunded Commitments	11,201
Non-marketable securities \| Debt funds \| Equity method accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Carrying Amount	6,918
Fair Value	6,918
Unfunded Commitments	240
Non-marketable securities \| Other investments \| Equity method accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Carrying Amount	11,629
Fair Value	11,629
Unfunded Commitments	$ 886

Fair Value of Financial Inst_10

Fair Value of Financial Instruments - Summary of Estimated Fair Values of Investments and Remaining Unfunded Commitments for Each Major Category of Investments (Textual) (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2020USD ($)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	$ 519,792
Unfunded commitments	21,460
Non-marketable securities \| Venture capital and private equity fund investments \| Fair value accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	226,524
Unfunded commitments	$ 9,133
Non-marketable securities \| Venture capital and private equity fund investments \| Fair value accounting \| Lower Limit
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Period distributions from fund investments to be received	10 years
Non-marketable securities \| Venture capital and private equity fund investments \| Fair value accounting \| Upper Limit
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Period distributions from fund investments to be received	13 years
Non-marketable securities \| Venture capital and private equity fund investments \| Equity method accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	$ 274,721
Unfunded commitments	11,201
Non-marketable securities \| Venture capital and private equity fund investments \| Noncontrolling Interests \| Fair value accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	55,000
Unfunded commitments	3,200
Non-marketable securities \| Other investments \| Equity method accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	11,629
Unfunded commitments	$ 886
Non-marketable securities \| Other investments \| Equity method accounting \| Lower Limit
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Period distributions from fund investments to be received	5 years
Non-marketable securities \| Other investments \| Equity method accounting \| Upper Limit
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Period distributions from fund investments to be received	8 years