SVB Financial (SIVBQ) 10-K28 Feb 202019 FY Annual reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2019	Jan. 31, 2020	Jun. 30, 2019
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2019
Entity File Number	000-15637
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Registrant Name	SVB FINANCIAL GROUP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	91-1962278
Entity Central Index Key	0000719739
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
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
Amendment Flag	false
Entity Common Stock, Shares Outstanding		51,622,841
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 Public Float			$ 11,580,246,470
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

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 6,781,783	$ 3,571,539
Available-for-sale securities, at fair value (cost of $13,894,348 and $7,862,311, respectively)	14,014,919	7,790,043
Held-to-maturity securities, at cost (fair value of $14,115,272 and $15,188,236, respectively)	13,842,946	15,487,442
Non-marketable and other equity securities	1,213,829	941,104
Total investment securities	29,071,694	24,218,589
Loans, net of unearned income	33,164,636	28,338,280
Allowance for loan losses	(304,924)	(280,903)
Net loans	32,859,712	28,057,377
Premises and equipment, net of accumulated depreciation and amortization	161,876	129,213
Goodwill	137,823	0
Other intangible assets, net	49,417	0
Lease right-of-use assets	197,365	0
Accrued interest receivable and other assets	1,745,233	951,261
Total assets	71,004,903	56,927,979
Liabilities:
Noninterest-bearing demand deposits	40,841,570	39,103,422
Interest-bearing deposits	20,916,237	10,225,478
Total deposits	61,757,807	49,328,900
Short-term borrowings	17,430	631,412
Lease liabilities	218,847	0
Other liabilities	2,041,752	1,006,359
Long-term debt	347,987	696,465
Total liabilities	64,383,823	51,663,136
Commitments and contingencies (Note 22 and Note 28)
SVBFG stockholders’ equity:
Preferred stock, $0.001 par value, 20,000,000 shares authorized; 350,000 shares and no shares issued and outstanding, respectively	340,138	0
Common stock, $0.001 par value, 150,000,000 shares authorized; 51,655,607 shares and 52,586,498 shares issued and outstanding, respectively	52	53
Additional paid-in capital	1,470,071	1,378,438
Retained earnings	4,575,601	3,791,838
Accumulated other comprehensive income (loss)	84,445	(54,120)
Total SVBFG stockholders’ equity	6,470,307	5,116,209
Noncontrolling interests	150,773	148,634
Total equity	6,621,080	5,264,843
Total liabilities and total equity	$ 71,004,903	$ 56,927,979

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Available-for-sale securities, amortized cost	$ 13,894,348	$ 7,862,311
Held-to-maturity securities	$ 14,115,272	$ 15,188,236
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	350,000	0
Preferred stock, shares outstanding	350,000	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares, issued	51,655,607	52,586,498
Common stock, shares outstanding	51,655,607	52,586,498

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
Consolidated Statements of Income - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest income:
Loans	$ 1,599,165	$ 1,358,480	$ 1,025,788
Investment securities:
Taxable	568,851	541,605	412,133
Non-taxable	44,952	34,616	5,714
Federal funds sold, securities purchased under agreements to resell and other short-term investment securities	96,440	35,208	21,505
Total interest income	2,309,408	1,969,909	1,465,140
Interest expense:
Deposits	177,672	29,306	8,676
Borrowings	35,135	46,615	36,095
Total interest expense	212,807	75,921	44,771
Net interest income	2,096,601	1,893,988	1,420,369
Provision for credit losses	106,416	87,870	92,304
Net interest income after provision for credit losses	1,990,185	1,806,118	1,328,065
Noninterest income:
Gains on investment securities, net	134,670	88,094	64,603
Gains on equity warrant assets, net	138,078	89,142	54,555
Client investment fees	182,068	130,360	56,136
Foreign exchange fees	159,262	138,812	115,760
Credit card fees	118,719	94,072	76,543
Deposit service charges	89,200	76,097	58,715
Lending related fees	49,920	41,949	43,265
Letters of credit and standby letters of credit fees	42,669	34,600	28,544
Investment banking revenue	195,177	0	0
Commissions	56,346	0	0
Other	55,370	51,858	59,110
Noninterest income	1,221,479	744,984	557,231
Noninterest expense:
Compensation and benefits	989,734	726,980	606,402
Professional services	205,479	158,835	121,935
Premises and equipment	96,770	77,918	71,753
Net occupancy	69,279	54,753	48,397
Business development and travel	68,912	48,180	41,978
FDIC and state assessments	18,509	34,276	35,069
Other	152,579	87,251	85,121
Total noninterest expense	1,601,262	1,188,193	1,010,655
Income before income tax expense	1,610,402	1,362,909	874,641
Income tax expense	425,685	351,561	355,463
Net income before noncontrolling interests	1,184,717	1,011,348	519,178
Net income attributable to noncontrolling interests	(47,861)	(37,508)	(28,672)
Net income available to common stockholders	$ 1,136,856	$ 973,840	$ 490,506
Earnings per common share—basic (usd per share)	$ 21.90	$ 18.35	$ 9.33
Earnings per common share—diluted (usd per share)	$ 21.73	$ 18.11	$ 9.20

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income before noncontrolling interests	$ 1,184,717	$ 1,011,348	$ 519,178
Change in foreign currency cumulative translation gains and losses:
Foreign currency translation gains (losses)	3,208	(5,999)	6,355
Related tax (expense) benefit	(889)	1,669	(2,587)
Change in unrealized gains and losses on available-for-sale securities:
Unrealized holding gains (losses)	189,813	(22,348)	(47,161)
Related tax (expense) benefit	(52,697)	6,315	19,282
Reclassification adjustment for losses included in net income	3,905	740	5,189
Related tax benefit	(1,087)	(205)	(2,098)
Reclassification of unrealized gains on equity securities to retained earnings for ASU 2016-01	0	(40,316)	0
Related tax expense	0	11,145	0
Amortization of unrealized gains on securities transferred from available-for-sale to held-to-maturity	(2,158)	(4,607)	(6,475)
Related tax benefit	600	1,277	2,593
Reclassification of stranded tax effect to retained earnings for ASU 2018-02	0	(319)	0
Change in unrealized gains and losses on cash flow hedges:
Unrealized losses	(8,305)	0	0
Related tax benefit	2,306	0	0
Reclassification adjustment for losses included in net income	5,358	0	0
Related tax benefit	(1,489)	0	0
Other comprehensive income (loss), net of tax	138,565	(52,648)	(24,902)
Comprehensive income	1,323,282	958,700	494,276
Comprehensive income attributable to noncontrolling interests	(47,861)	(37,508)	(28,672)
Comprehensive income attributable to SVBFG	$ 1,275,421	$ 921,192	$ 465,604

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($)	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total SVBFG Stockholders’ Equity	Noncontrolling Interests
Balance (in shares) at Dec. 31, 2016			52,254,074
Balance, beginning of period, net of tax at Dec. 31, 2016	$ 3,777,037,000	$ 0	$ 52,000	$ 1,242,741,000	$ 2,376,331,000	$ 23,430,000	$ 3,642,554,000	$ 134,483,000
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)			570,276
Common stock issued under employee benefit plans, net of restricted stock cancellations	24,909,000		$ 1,000	24,908,000			24,909,000
Common stock issued under ESOP (in shares)			10,838
Common stock issued under ESOP	2,094,000			2,094,000			2,094,000
Net income	519,178,000				490,506,000		490,506,000	28,672,000
Capital calls and distributions, net	(23,535,000)							(23,535,000)
Net change in unrealized gains and losses on AFS securities, net of tax	(24,788,000)					(24,788,000)	(24,788,000)
Amortization of unrealized gains on securities transferred from AFS to HTM, net of tax	(3,882,000)					(3,882,000)	(3,882,000)
Foreign currency translation adjustments, net of tax	3,768,000					3,768,000	3,768,000
Share-based compensation, net	44,634,000			44,634,000			44,634,000
Reclassification of stranded tax effect for ASU 2018-02	0
Balance (in shares) at Dec. 31, 2017			52,835,188
Balance, end of period, net of tax at Dec. 31, 2017	4,319,415,000	0	$ 53,000	1,314,377,000	2,866,837,000	(1,472,000)	4,179,795,000	139,620,000
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)			456,845
Common stock issued under employee benefit plans, net of restricted stock cancellations	15,810,000		$ 1,000	15,809,000			15,810,000
Common stock issued under ESOP (in shares)			9,672
Common stock issued under ESOP	2,577,000			2,577,000			2,577,000
Net income	1,011,348,000				973,840,000		973,840,000	37,508,000
Capital calls and distributions, net	(28,494,000)							(28,494,000)
Net change in unrealized gains and losses on AFS securities, net of tax	(15,498,000)					(15,498,000)	(15,498,000)
Amortization of unrealized gains on securities transferred from AFS to HTM, net of tax	(3,330,000)					(3,330,000)	(3,330,000)
Foreign currency translation adjustments, net of tax	(4,330,000)					(4,330,000)	(4,330,000)
Share-based compensation, net	45,675,000			45,675,000			45,675,000
Reclassification of stranded tax effect for ASU 2018-02	319,000
Reclassification of stranded tax effect for ASU 2018-02 \| Accounting Standards Update 2018-02					319,000	(319,000)
Common stock repurchases (in shares)			(715,207)
Common stock repurchases	(147,123,000)		$ (1,000)		(147,122,000)		(147,123,000)
Balance (in shares) at Dec. 31, 2018			52,586,498
Balance, end 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
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)			586,877
Common stock issued under employee benefit plans, net of restricted stock cancellations	21,312,000		$ 0	21,312,000			21,312,000
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	1,184,717,000				1,136,856,000		1,136,856,000	47,861,000
Capital calls and distributions, net	(50,978,000)							(50,978,000)
Net change in unrealized gains and losses on AFS securities, net of tax	139,934,000					139,934,000	139,934,000
Amortization of unrealized gains on securities transferred from AFS to HTM, net of tax	(1,558,000)					(1,558,000)	(1,558,000)
Foreign currency translation adjustments, net of tax	2,319,000					2,319,000	2,319,000
Share-based compensation, net	66,815,000			66,815,000			66,815,000
Reclassification of stranded tax effect for ASU 2018-02	0
Common stock repurchases (in shares)			(1,532,210)
Common stock repurchases	(352,511,000)		$ (1,000)		(352,510,000)		(352,511,000)
Acquisition of SVB Leerink	5,256,000							5,256,000
Issuance of Series A Preferred Stock	340,138,000	340,138,000					340,138,000
Net change in unrealized gains and losses on cash flow hedges, net of tax	(2,130,000)					(2,130,000)	(2,130,000)
Balance (in shares) at Dec. 31, 2019			51,655,607
Balance, end 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

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income before noncontrolling interests	$ 1,184,717	$ 1,011,348	$ 519,178
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	106,416	87,870	92,304
Gains on investment securities, net	(134,670)	(88,094)	(45,547)
Distributions of earnings from non-marketable and other equity securities	95,131	72,015	45,867
Depreciation and amortization	82,717	57,906	56,123
Amortization of premiums and discounts on investment securities, net	15,513	(28)	2,530
Amortization of share-based compensation	66,815	45,675	36,900
Amortization of deferred loan fees	(155,429)	(128,077)	(111,738)
Deferred income tax (benefit) expense	(3,072)	(21,061)	25,187
Excess tax benefit from exercise of stock options and vesting of restricted shares	(9,588)	(17,989)	(18,014)
Losses from the write-off of premises and equipment	5,219	7,278	0
Other losses (gains)	8,959	0	(3,308)
Changes in other assets and liabilities:
Accrued interest receivable and payable, net	(24,189)	(55,834)	(31,372)
Accounts receivable and payable, net	(17,019)	(23,020)	3,481
Income tax receivable and payable, net	(11,630)	(5,820)	46,168
Accrued compensation	(15,253)	56,874	31,689
Foreign exchange spot contracts, net	59,998	24,018	(20,891)
Other, net	(74,240)	(54,039)	15,909
Net cash provided by operating activities	1,164,129	933,562	646,865
Cash flows from investing activities:
Purchases of available-for-sale securities	(9,872,095)	(668,264)	(2,420,741)
Proceeds from sales of available-for-sale securities	2,189,087	474,482	580,871
Proceeds from maturities and paydowns of available-for-sale securities	1,643,357	3,436,064	3,339,574
Purchases of held-to-maturity securities	(492,502)	(4,726,595)	(5,967,223)
Proceeds from maturities and paydowns of held-to-maturity securities	2,124,513	1,891,761	1,708,001
Purchases of non-marketable and other equity securities	(136,186)	(81,574)	(44,047)
Proceeds from sales and distributions of capital of non-marketable and other equity securities	113,526	95,025	51,052
Net increase in loans	(4,773,775)	(5,175,409)	(3,170,099)
Purchases of premises and equipment	(65,479)	(45,865)	(50,884)
Proceeds from sale of equity valuation services business	0	0	3,000
Acquisition of SVB Leerink	(102,328)	0	0
Net cash used for investing activities	(9,371,882)	(4,800,375)	(5,970,496)
Cash flows from financing activities:
Net increase in deposits	12,428,907	5,074,825	5,274,207
Net (decrease) increase in short-term borrowings	(613,982)	(402,318)	521,062
Principal payments of long-term debt	(358,395)	0	(97,781)
(Distributions to noncontrolling interests), net of contributions from noncontrolling interests	(50,978)	(28,494)	(23,535)
Net proceeds from the issuance of preferred stock	340,138	0	0
Common stock repurchase	(352,511)	(147,123)	0
Proceeds from issuance of common stock, ESPP and ESOP	24,818	18,387	27,003
Net cash provided by financing activities	11,417,997	4,515,277	5,700,956
Net increase in cash and cash equivalents	3,210,244	648,464	377,325
Cash and cash equivalents at beginning of period	3,571,539	2,923,075	2,545,750
Cash and cash equivalents at end of period	6,781,783	3,571,539	2,923,075
Cash paid during the period for:
Interest	217,961	75,601	45,592
Income taxes	422,346	376,425	277,823
Noncash items during the period:
Changes in unrealized gains and losses on available-for-sale securities, net of tax	139,934	(15,498)	(24,788)
Distributions of stock from investments	8,917	5,277	6,807
Equity warrant assets
Adjustments to reconcile net income to net cash provided by operating activities:
Changes in fair value of derivatives	2,240	(24,417)	(11,862)
Derivative
Adjustments to reconcile net income to net cash provided by operating activities:
Changes in fair value of derivatives	$ (18,506)	$ (11,043)	$ 14,261

Nature of Business

Nature of Business	12 Months Ended
Nature of Business	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business	Nature of Business 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 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 entity, SVB Financial Group (not including subsidiaries). We offer commercial banking products and services through our principal subsidiary, the Bank, which is a California-chartered bank founded in 1983 and a member of the Federal Reserve System. Through its subsidiaries, the Bank also offers asset management, private wealth management and other investment services. In addition, through SVB Financial's other subsidiaries and divisions, we offer investment banking and non-banking products and services, such as funds management and M&A advisory services. We primarily focus on serving corporate clients in the following niches: technology, life science/healthcare, private equity/venture capital and premium wine. Our corporate clients range widely in terms of size and stage of maturity. Additionally, we focus on cultivating strong relationships with firms within the venture capital and private equity community worldwide, many of which are also our clients and may invest in our corporate clients. Headquartered in Santa Clara, California, we operate in centers of innovation in the United States and around the world. For reporting purposes, SVB Financial Group has four operating segments for which we report financial information in this report: Global Commercial Bank, SVB Private Bank, SVB Capital and SVB Leerink. Financial information, results of operations and a description of the services provided by our operating segments are set forth in Note 25—“Segment Reporting” of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Dec. 31, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Use of Estimates and Assumptions The preparation of 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 loan losses and the allowance for unfunded credit commitments. The following discussion provides additional background on our significant accounting policies. Principles of Consolidation and Presentation Our 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 and, 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 VIEs economic performance, and (b) the 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. Cash and Cash Equivalents Cash and cash equivalents consist of cash on hand, cash balances due from banks, interest-earning deposits, Federal Reserve deposits, federal funds sold, securities purchased under agreements to resell and other short-term investment securities. For the consolidated statements of cash flows, we consider cash equivalents to be investments that are readily convertible to known amounts of cash, so near to their maturity that they present an insignificant risk of change in fair value due to changes in market interest rates, and purchased in conjunction with our cash management activities. Investment Securities 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 other-than-temporary impairment 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 downgrade represents an increased level of risk of other-than-temporary impairment, and as a part of our consideration of recording an other-than-temporary impairment we will assess the issuer's ability to service the debt and to repay the principal at contractual maturity. We apply the other-than-temporary impairment standards of ASC 320, Investments-Debt and Equity Securities . For our debt securities, we have the intent and ability to hold these securities until we recover our cost less any credit-related loss. We separate the amount of the other-than-temporary impairment, if any, into the amount that is credit related (credit loss component) and the amount due to all other factors. The credit loss component is recognized in earnings and is the difference between a security's amortized cost basis and the present value of expected future cash flows discounted at the security's effective interest rate. The amount due to all other factors is recognized in other comprehensive income. We consider numerous factors in determining whether a credit loss exists and the period over which the debt security is expected to recover. The following list is not meant to be all inclusive. All of the following factors are considered: • The length of time and the extent to which the fair value has been less than the amortized cost basis (severity and duration); • Adverse conditions specifically related to the security, an industry or geographic area; for example, changes in the financial condition of the issuer of the security, or in the case of an asset-backed debt security, changes in the financial condition of the underlying loan obligors. Examples of those changes include any of the following: ◦ Changes in technology; ◦ The discontinuance of a segment of the business that may affect the future earnings potential of the issuer or underlying loan obligors of the security; and ◦ Changes in the quality of the credit enhancement. • The historical and implied volatility of the fair value of the security; • The payment structure of the debt security and the likelihood of the issuer being able to make payments that increase in the future; • Failure of the issuer of the security to make scheduled interest or principal payments; • Any changes to the rating of the security by a rating agency; and • Recoveries or additional declines in fair value after the balance sheet date. In accordance with ASC 310-20, Receivables-Nonrefundable Fees and Other Costs , we use estimates of future principal prepayments, provided by third-party market-data vendors, in addition to actual principal prepayment experience to calculate the constant effective yield necessary to apply the effective interest method in the amortization of purchase discounts or premiums on mortgage-backed securities and fixed rate collateralized mortgage obligations. The accretion and amortization of discounts and premiums, respectively, are included in interest income over the contractual terms of the underlying securities replicating the effective interest method. Held-to-Maturity Securities Debt securities purchased in which we have the positive intent and ability to hold to its maturity are classified as held-to-maturity securities and are recorded at amortized cost. Transfers of investment securities into the held-to-maturity category from the available-for-sale category are made at fair value at the date of transfer. The net unrealized gains, net of tax, are retained in other comprehensive income, and the carrying value of the held-to-maturity securities are amortized over the life of the securities in a manner consistent with the amortization of a premium or discount. Non-Marketable and Other Equity Securities Non-marketable and other equity securities include investments in venture capital and private equity funds, SPD-SVB, debt funds, private and public portfolio companies, including public equity securities held as a result of equity warrant assets exercised, and investments in qualified affordable housing projects. A majority of these investments are managed through our SVB Capital funds business in funds of funds and direct venture funds. Our accounting for investments in non-marketable and other equity securities depends on several factors, including the level of ownership, power to control and the legal structure of the subsidiary making the investment. As further described below, we base our accounting for such securities on: (i) fair value accounting, (ii) other investments without a readily determinable fair value, (iii) equity method accounting and (iv) the proportional amortization method which is used only for qualified affordable housing projects. Fair Value Accounting Our managed funds are investment companies under the AICPA Audit and Accounting Guide for Investment Companies (codified in ASC 946) and accordingly, these funds report their investments at estimated fair value, with unrealized gains and losses resulting from changes in fair value reflected as investment gains or losses in our consolidated statements of income. Our non-marketable and other equity securities recorded pursuant to fair value accounting consist of our investments through the following funds: • Funds of funds, which make investments in venture capital and private equity funds, and • Direct venture funds, which make equity investments in privately held companies. A summary of our ownership interests in the investments held under fair value accounting as of December 31, 2019 is presented in the following table: Limited partnership Company Direct and Indirect Ownership in Limited Partnership Managed funds of funds Strategic Investors Fund, LP 12.6 % Capital Preferred Return Fund, LP 20.0 Growth Partners, LP 33.0 Managed direct venture funds CP I, LP 10.7 The general partner interests of these funds are controlled, and in some cases, owned by SVB Financial. The limited partners of these funds do not have substantive participating or kick-out rights. Therefore, these funds are consolidated and any gains or losses resulting from changes in the estimated fair value of the investments are recorded as investment gains or losses in our consolidated net income. Under fair value accounting, investments are carried at their estimated fair value based on financial information obtained as the general partner of the fund or obtained from the funds' respective general partner. For direct private company investments, valuations are based upon 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, current and projected operating performance, exit strategies and financing transactions subsequent to the acquisition of the investment. For direct equity investments in public companies, valuations are based on quoted market prices less a discount if the securities are subject to certain sales restrictions. Sales restriction discounts generally range from ten percent to twenty percent depending on the sale restrictions which typically range from three to six months . The valuation of non-marketable securities in shares of private company capital stock and the valuation of other securities in shares of public company stock with certain sales restrictions is subject to significant judgment. The inherent uncertainty in the process of valuing securities for which a ready market does not exist may cause our estimated values of these securities to differ significantly from the values that would have been derived had a ready market for the securities existed, and those differences could be material. For our fund investments, we utilize the net asset value as obtained from the general partners of the fund investments as the funds do not have a readily determinable fair value. The general partners of our fund investments prepare their financial statements using guidance consistent with fair value accounting. We account for differences between our measurement date and the date of the fund investment's net asset value by using the most recent available financial information from the investee general partner, for example September 30 th , for our December 31 st consolidated financial statements. We adjust the value of our investments for any contributions paid, distributions received from the investment and known significant fund transactions or market events about which we are aware through information provided by the fund managers or from publicly available transaction data during the reporting period. Gains or losses resulting from changes in the estimated fair value of the investments and from distributions received are recorded as gains on investment securities, net, a component of noninterest income. The portion of any investment gains or losses attributable to the limited partners is reflected as net income attributable to noncontrolling interests and adjusts our net income to reflect its percentage ownership. Other Investments without a Readily Determinable Fair Value Effective January 1, 2018 we adopted ASU 2016-01 Recognition and Measurement of Financial Assets and Financial Liabilities which eliminated the concept of cost method accounting and created an additional method of accounting, other investments without a readily determinable fair value. These investments include direct equity investments in private companies. The carrying value is based on the price at which the investment was acquired less any impairment, if any, 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. Equity Method Our equity method non-marketable securities consist of investments in venture capital and private equity funds, privately-held companies, debt funds, and joint ventures. Our equity method non-marketable securities and related accounting policies are described as follows: • Equity securities, such as preferred or common stock in privately-held companies in which we hold a voting interest of at least 20 percent , or in which we have the ability to exercise significant influence over the investees' operating and financial policies through board involvement or other influence, are accounted for under the equity method, • Investments in limited partnerships in which we hold voting interests of more than 5 percent , or in which we have the ability to exercise significant influence over the partnerships' operating and financial policies, are accounted for using the equity method, and • Our China Joint Venture partnership, for which we have 50 percent ownership, is accounted for under the equity method. We recognize our proportionate share of the results of operations of these equity method investees in our results of operations, based on the most current financial information available from the investee. We review our investments accounted for under the equity method at least quarterly for possible other-than-temporary impairment. Our review typically includes an analysis of facts and circumstances for each investment, the expectations of the investment's future cash flows and capital needs, variability of its business and the company's exit strategy. For our fund investments, we utilize the net asset value per share as provided by the general partners of the fund investments. We account for differences between our measurement date and the date of the fund investment's net asset value by using the most recent available financial information from the investee general partner, for example September 30 th , for our December 31 st consolidated financial statements. We adjust the value of our investments for any contributions paid, distributions received from the investment, and known significant fund transactions or market events about which we are aware through information provided by the fund managers or from publicly available transaction data during the reporting period. We reduce our investment value when we consider declines in value to be other-than-temporary and recognize the estimated loss as a loss on investment securities, a component of noninterest income. Proportional Amortization Method In order to fulfill our responsibilities under the Community Reinvestment Act, we invest as a limited partner in low income housing partnerships that operate qualified affordable housing projects and generate tax benefits, including federal low income housing tax credits, for investors. The partnerships are deemed to be VIEs because they do not have sufficient equity investment at risk and are structured with non-substantive voting rights. We are not the primary beneficiary of the VIEs and do not consolidate them. Our investments in low income housing partnerships are recorded in non-marketable and other equity securities within our investment securities portfolio on the consolidated balance sheet. As a practical expedient, we amortize the investment in proportion to the allocated tax benefits under the proportional amortization method of accounting and present such benefits net of investment amortization in income tax expense. Loans Loans are reported at 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 Loan Losses The allowance for loan losses considers credit risk and is established through a provision for loan losses charged to expense. Our allowance for loan losses is established for estimated loan losses that are probable and incurred but not yet realized. Our evaluation process is designed to determine that the allowance for loan losses is appropriate at the balance sheet date. The process of estimating loan losses is inherently imprecise. We maintain a systematic process for the evaluation of individual loans and pools of loans for inherent risk of loan losses. At the time of approval, each loan in our portfolio is assigned a Credit Risk Rating and industry niche. 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, the depth and experience of the borrower's management team, potential loan concentrations, and general economic conditions. 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. Our review process evaluates the appropriateness of the credit risk rating and allocation of the allowance for loan losses, as well as other account management functions. The allowance for loan losses is determined based on a qualitative analysis and a formula allocation for similarly risk-rated loans by portfolio segment and individually for impaired loans. The formula allocation provides the average loan loss experience for each portfolio segment, which considers our quarterly historical loss experience since the year 2000, both by risk-rating category and client industry sector. The resulting loan loss factors for each risk-rating category and client industry sector are ultimately applied to the respective period-end client loan balances for each corresponding risk-rating category by client industry sector to provide an estimation of the allowance for loan losses. The probable loan loss experience for any one year period of time is reasonably expected to be greater or less than the average as determined by the loss factors. As such, management applies a qualitative allocation to the results of the aforementioned model to ascertain the total allowance for loan losses. This qualitative allocation is based on management's assessment of the risks that may lead to a loan loss experience different from our historical loan loss experience. Based on management's prediction or estimate of changing risks in the lending environment, the qualitative allocation may vary significantly from period to period and includes, but is not limited to, consideration of the following factors: • Changes in lending policies and procedures, including underwriting standards and collections, and charge-off and recovery practices; • Changes in national and local economic business conditions, including the market and economic condition of our clients' industry sectors; • Changes in the nature of our loan portfolio; • Changes in experience, ability, and depth of lending management and staff; • Changes in the trend of the volume and severity of past due and classified loans; • Changes in the trend of the volume of nonaccrual loans, troubled debt restructurings and other loan modifications; • Reserve floor for portfolio segments that would not draw a minimum reserve based on the lack of historical loan loss experience; • Reserve for large funded loan exposure; • Reserve for performing impaired loan exposure; and • Other factors as determined by management from time to time. While the evaluation process of our allowance for loan losses uses historical and other objective information, the classification of loans and the establishment of the allowance for loan losses rely, to a great extent, on the judgment and experience of our management. Allowance for Unfunded Credit Commitments We record a liability for probable and estimable incurred losses associated with our unfunded credit commitments being funded and subsequently being charged off. Each quarter, every unfunded client credit commitment is allocated to a credit risk-rating in accordance with each client's credit risk rating and portfolio segment. We use the segment specific historical loan loss factors described under our allowance for loan losses to calculate the loan loss experience if unfunded credit commitments are funded. Separately, we use historical trends to calculate a probability of an unfunded credit commitment being funded. We apply the loan funding probability factor to risk-factor adjusted unfunded credit commitments by credit risk-rating and portfolio segment to derive the allowance for unfunded credit commitments, similar to funded loans. The allowance for unfunded credit commitments also includes certain qualitative allocations as deemed appropriate by management. We include the allowance for unfunded credit commitments in other liabilities and the related provision in our provision for credit losses. Uncollectible Loans and Write-offs Our charge-off policy applies to all loans, regardless of portfolio segment. Commercial loans are considered for a full or partial charge-off in the event that principal or interest is over 180 days past due and the loan lacks sufficient collateral and it is not in the process of collection, provided that a loss event has been defined and the charge-off is consistent with GAAP. Consumer loans are considered for a full or partial charge-off in the event that principal or interest is over 120 days past due and the loan lacks sufficient collateral and it is not in the process of collection, provided that a loss event has been defined and the charge-off is consistent with GAAP. We also consider writing off loans in the event of any of the following circumstances: 1) the loan, or a portion of the loan is deemed uncollectible due to: a) the borrower's inability to make recurring payments, b) material changes in the borrower's financial condition, or c) the expected sale of all or a portion of the borrower's business is insufficient to repay the loan in full, or 2) the loan has been identified for charge-off by regulatory authorities. Troubled Debt Restructurings A TDR arises from the modification of a loan where we have granted a concession to the borrower related to the borrower's financial difficulties that we would not have otherwise considered for economic or legal reasons. These concessions may include: (1) deferral of payment for more than an insignificant period of time that does not include sufficient offsetting borrower concessions; (2) interest rate reductions; (3) extension of the maturity date outside of ordinary course extension; (4) principal forgiveness; and/or (5) reduction of accrued interest. We use the factors in ASC 310-40, Receivables, Troubled Debt Restructurings by Creditors, in analyzing when a borrower is experiencing financial difficulty, and when we have granted a concession, both of which must be present for a restructuring to meet the criteria of a TDR. If we determine that a TDR exists, we measure impairment based on the present value of expected future cash flows discounted at the loan's effective interest rate, except that as a practical expedient, we may also measure impairment based on a loan's observable market price, or the fair value of the collateral less selling costs if the loan is a collateral-dependent loan. Impaired Loans A loan is considered impaired when, based upon currently known information, it is deemed probable that we will be unable to collect all amounts due according to the contractual terms of the agreement. On a quarterly basis, we review our loan portfolio for impairment. Within each class of loans, we review individual loans for impairment based on credit risk ratings. 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 "Performing (Criticized)" and could be classified as a performing impaired loan. For each loan identified as impaired, we measure the impairment based upon the present value of expected future cash flows discounted at the loan's effective interest rate. In limited circumstances, we may measure impairment based on the loan's observable market price or the fair value of the collateral less selling costs if the loan is collateral dependent. Impaired collateral-dependent loans will have independent appraisals completed and accepted at least annually. 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. If it is determined that the value of an impaired loan is less than the recorded investment in the loan, net of previous charge-offs and payments collected, we recognize impairment through the allowance for loan losses as determined by our analysis. Nonaccrual Loans Loans are placed on nonaccrual status when they become 90 days past due as to principal or interest payments (unless the principal and interest are well secured and in the process of collection); or when we have determined, based upon currently known information, that the timely collection of principal or interest is not probable. When a loan is placed on nonaccrual status, the accrued interest and fees are reversed against interest income and the loan is accounted for using the cost recovery method thereafter until qualifying for return to accrual status. For a loan to be returned to accrual status, all delinquent principal and interest must become current in accordance with the terms of the loan agreement and future collection of remaining principal and interest must be deemed probable. We apply a cost recovery method in which all cash received is applied to the loan principal until it has been collected. Under this approach, interest income is recognized after total cash flows received exceed the recorded investment at the date of initial nonaccrual. All of our nonaccrual loans have credit risk ratings of 8 or 9 and are classified under the nonperforming impaired category. Premises and Equipment Premises and equipment are reported at cost less accumulated depreciation and amortization. Depreciation and amortization are computed using the straight-line method over the estimated useful lives of the assets or the terms of the related leases, whichever is shorter. The maximum estimated useful lives by asset classification are as follows: Leasehold improvements Lesser of lease term or asset life Furniture and equipment 7 years Computer software 3-7 years Computer hardware 3-5 years We capitalize the costs of computer software developed or obtained for internal use, including costs related to developed software, purchased software licenses and certain implementation costs. For property and equipment that is retired or otherwise disposed of, the cost and related accumulated depreciation are removed from the accounts and the resulting gain or loss is included in noninterest expense in consolidated net income. Lease Obligations We have entered into leases for real estate and various equipment utilized for the business. At the inception of the lease, each lease is evaluated to determine whether the lease will be accounted for as an operating or finance lease. We had no finance lease obligations at December 31, 2019 and 2018 . We have made an accounting policy election not to recognize right-of-use assets and lease liabilities that arise from short-term leases for any class of underlying asset. In addition to excluding short-term leases, we have implemented an accounting policy in which non-lease components are not separated from lease components in the measurement of right-of-use ("ROU") asset and lease liabilities for all lease contracts. ROU assets represent our right to use an underlying as

Business Combination

Business Combination	12 Months Ended
Business Combination	Dec. 31, 2019
Business Combinations [Abstract]
Business Combination	Business Combination On January 4, 2019, we completed the acquisition of Leerink Holdings LLC, the Boston-based parent company of healthcare and life science investment bank Leerink Partners LLC, now SVB Leerink Holdings LLC ("SVB Leerink"). SVB Leerink is an investment bank specializing in equity and convertible capital markets, M&A, 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. The acquisition was accounted for as a business combination and accordingly, the results of SVB Leerink's operations have been included in the Company's consolidated financial statements for the year ended December 31, 2019 from the date of acquisition. We acquired SVB Leerink for $273.2 million comprised of cash and share-based replacement award liabilities. In addition, we provided a retention pool for employees of $60.0 million to be paid over five years comprised of a mix of cash and equity issued under the Company's current Equity Incentive Plan. Refer to Note 5—“Share-Based Compensation” of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report of this report for more information. The following table summarizes the allocation of the purchase price to the net assets of SVB Leerink as of January 4, 2019: (Dollars in thousands) January 4, 2019 Cash paid $ 265,601 Replacement award liabilities (1) 7,629 Total purchase consideration $ 273,230 Fair value of net assets acquired 135,407 Goodwill $ 137,823 (1) The replacement award liabilities recognized as part of the total purchase consideration and the post-combination expenses of $9.1 million related to share-based replacement awards will be paid out in cash in accordance with SVB Leerink's original grant date vesting schedules. The following table summarizes the estimated fair value of assets acquired and liabilities assumed upon the finalization of the purchase: (Dollars in thousands) January 4, 2019 Assets acquired: Cash and cash equivalents $ 163,273 Investment securities 33,644 Accounts receivable 36,538 Intangible assets 60,900 Other assets 35,128 Total assets acquired 329,483 Liabilities assumed: Accrued compensation 137,206 Due to broker-dealers 18,483 Other liabilities 33,131 Noncontrolling interests 5,256 Total liabilities assumed 194,076 Fair value of net assets acquired $ 135,407 The Company recognized identifiable intangible assets of $60.9 million and goodwill of $137.8 million as a result of the acquisition. Intangible assets of $60.9 million are subject to amortization over their estimated useful lives. The goodwill recorded includes revenue generating synergies expected from collaboration between SVB Leerink and the Company. All reported goodwill amounts have been allocated to the SVB Leerink reporting segment and are expected to be deductible for tax purposes. The fair value of the noncontrolling interests in SVB Leerink Holdings LLC represents the noncontrolling ownership percentage for SVB Leerink's consolidated VIE investment securities which are measured at net asset value. The following table summarizes the fair value and estimated useful lives of the other intangible assets at the date of acquisition: (Dollars in thousands) Estimated Fair Value Weighted Average Estimated Useful Life - in Years Other intangible assets: Customer relationships $ 42,000 11.0 Other 18,900 9.9 Total other intangible assets $ 60,900 SVB Leerink's net income from January 4, 2019 through December 31, 2019 was approximately $9.5 million . Supplementary pro forma financial information related to the acquisition is not included because the impact to the Company's consolidated statements of income is not material. The following table represents the amount of revenue and earnings attributable to SVB Leerink that is included in our financial results for the year ended December 31, 2019: (Dollars in thousands) Year ended December 31, 2019 Net interest income $ 1,252 Noninterest income 265,841 Noninterest expense 252,678 Income before income tax expense 14,415 Income tax expense 3,566 Net income attributable to noncontrolling interests 1,325 Net income available to common stockholders $ 9,524 The following table shows the components of acquisition-related activities expense for the year ended December 31, 2019: (Dollars in thousands) Year ended December 31, 2019 Professional fees $ 919 Other 396 Total acquisition-related expenses $ 1,315

Stockholders' Equity and EPS

Stockholders' Equity and EPS	12 Months Ended
Stockholders' Equity and EPS	Dec. 31, 2019
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 for 2019 , 2018 and 2017 : Year ended December 31, (Dollars in thousands) Income Statement Location 2019 2018 2017 Reclassification adjustment for losses on available-for-sale securities included in net income Gains on investment securities, net $ 3,905 $ 740 $ 5,189 Related tax benefit Income tax expense (1,087 ) (205 ) (2,098 ) Reclassification adjustment for losses on cash flow hedges included in net income Net interest income 5,358 — — Related tax benefit Income tax expense (1,489 ) — — Total reclassification adjustment for losses included in net income, net of tax $ 6,687 $ 535 $ 3,091 The table below summarizes the activity relating to net gains and losses on our cash flow hedges included in accumulated other comprehensive income for 2019 , 2018 and 2017 . Over the next 12 months, we expect that approximately $3.2 million in accumulated other comprehensive income ("AOCI") at December 31, 2019, related to our cash flow hedges will be reclassified out of AOCI and recognized in net income. Year ended December 31, (Dollars in thousands) 2019 2018 2017 Balance, beginning of period, net of tax $ — $ — $ — Net decrease in fair value, net of tax (5,999 ) — — Net realized loss reclassified to net income, net of tax 3,869 — — Balance, end of period, net of tax $ (2,130 ) $ — $ — 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 option 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 2019 , 2018 and 2017 : Year ended December 31, (Dollars and shares in thousands, except per share amounts) 2019 2018 2017 Numerator: Net income available to common stockholders $ 1,136,856 $ 973,840 $ 490,506 Denominator: Weighted average common shares outstanding—basic 51,915 53,078 52,588 Weighted average effect of dilutive securities: Stock options and ESPP 227 377 385 Restricted stock units 169 317 333 Weighted average common shares outstanding—diluted 52,311 53,772 53,306 Earnings per common share: Basic $ 21.90 $ 18.35 $ 9.33 Diluted 21.73 18.11 9.20 The following table summarizes the weighted average common shares excluded from the diluted EPS calculation due to the antidilutive effect for 2019 , 2018 and 2017 : Year ended December 31, (Shares in thousands) 2019 2018 2017 Stock options 167 59 73 Restricted stock units 250 85 1 Total 417 144 74 Stock Repurchase Programs On November 13, 2018, the Company announced the Stock Repurchase Program to repurchase up to $500 million of our outstanding common stock. The program completed on July 1, 2019, after we repurchased 2.2 million shares of common stock for $499.6 million under the Stock Repurchase Program. On October 24, 2019, our Board of Directors authorized a new stock repurchase program that enables us to repurchase up to $350 million of our outstanding common stock. This program expires on October 29, 2020. As of December 31, 2019, we have not repurchased any shares of our common stock under the new stock repurchase program. 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 FRB. 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 FRB. As of December 31, 2019, 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 December 31, 2019: Series Description Amount outstanding (in millions) Carrying value (in millions) Shares issued and outstanding Par Value Ownership interest per depository share Liquidation preference per depository share 2019 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 $ —

Share-Based Compensation

Share-Based Compensation	12 Months Ended
Share-Based Compensation	Dec. 31, 2019
Share-based Payment Arrangement [Abstract]
Share-Based Compensation	Share-Based Compensation Share-based compensation expense was recorded net of estimated forfeitures for 2019 , 2018 and 2017 , such that expense was recorded only for those share-based awards that are expected to vest. In 2019 , 2018 and 2017 , we recorded share-based compensation and related benefits as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Share-based compensation expense $ 66,815 $ 45,675 $ 36,900 Income tax benefit related to share-based compensation expense (16,152 ) (10,997 ) (12,845 ) Capitalized compensation costs 1,517 1,466 1,071 Equity Incentive Plan Our 2006 Equity Incentive Plan (the “2006 Incentive Plan”) was adopted in May 2006, and is amended from time to time. The 2006 Incentive Plan provides for the grant of various types of incentive awards, of which the following have been granted: (i) stock options; (ii) restricted stock awards; (iii) restricted stock units (subject to either time-and/or performance-based vesting); and (iv) other cash or stock settled equity awards. Eligible participants in the 2006 Incentive Plan include directors, employees and consultants. Subject to the provisions of Section 16 of the 2006 Incentive Plan, the maximum aggregate number of shares that may be awarded and sold thereunder is 12,028,505 . Restricted stock awards/units are counted against the available-for-issuance limits of the 2006 Incentive Plan as two shares for every one share awarded. Further, if shares acquired under any such award are forfeited, repurchased by SVB Financial, used to satisfy the tax withholding obligations related to an award or otherwise canceled and would otherwise return to the 2006 Incentive Plan, two times the number of such shares will return to the 2006 Incentive Plan and will again become available for issuance. Under the terms of the 2006 Incentive Plan and subject to certain exceptions: (i) restricted stock awards/units are subject to a minimum of at least three years of annual vesting, and (ii) performance-based restricted stock awards/units and stock options are subject to a minimum of at least one year of vesting. Generally in practice, restricted stock awards/units vest annually over four years and require continued employment or other service through the vesting period. Performance-based restricted stock awards/units granted to executives generally vest upon meeting certain performance-based objectives over a three year period and, typically the passage of time, and require continued employment or other service through the vesting period. Stock options typically vest annually over four years , from the grant date based on continued employment or other service, and expire no later than seven years after the grant date. Employee Stock Purchase Plan We maintain the 1999 ESPP under which participating employees may annually contribute up to 10 percent of their gross compensation (not to exceed $25,000 ) to purchase shares of our common stock at 85 percent of its fair market value at either the beginning or end of each six-month offering period, whichever price is less. To be eligible to participate in the ESPP, an employee must, among other requirements, be employed by the Company on both the date of offering and date of purchase, and be employed customarily for at least 20 hours per week and at least five months per calendar year. We issued 161,410 shares and received $27.9 million in cash under the ESPP in 2019 . At December 31, 2019 , a total of 1,337,808 shares of our common stock were still available for future issuance under the ESPP. Unrecognized Compensation Expense As of December 31, 2019 , unrecognized share-based compensation expense was as follows: (Dollars in thousands) Unrecognized Expense Weighted Average Expected Recognition Period - in Years Stock options $ 14,313 2.52 Restricted stock awards/units 101,310 2.66 Total unrecognized share-based compensation expense $ 115,623 Valuation Assumptions The fair values of share-based awards for employee stock options and employee stock purchases made under our ESPP were estimated using the Black-Scholes option pricing model. The fair values of restricted stock units were based on our closing stock price on the date of grant. The following weighted average assumptions and fair values were used for our employee stock options and restricted stock units: Equity Incentive Plan Awards 2019 2018 2017 Weighted average expected term of options - in years 4.6 4.8 4.9 Weighted average expected volatility of the Company's underlying common stock 35.5 % 34.7 % 33.7 % Risk-free interest rate 2.26 2.82 1.81 Expected dividend yield — — — Weighted average grant date fair value - stock options $ 83.50 $ 105.81 $ 57.81 Weighted average grant date fair value - restricted stock units 243.65 294.50 181.23 The following weighted average assumptions and fair values were used for our ESPP: ESPP 2019 2018 2017 Expected term in years 0.5 0.5 0.5 Weighted average expected volatility of the Company's underlying common stock 38.1 % 32.2 % 31.2 % Risk-free interest rate 2.40 1.79 0.80 Expected dividend yield — — — Weighted average grant date fair value $ 52.90 $ 62.76 $ 41.70 The expected term is based on the implied term of the stock options using factors based on historical exercise behavior. The expected volatilities are based on a blended rate consisting of our historic volatility and our expected volatility over a five -year term which is an indicator of expected volatility and future stock price trends. For 2019 , 2018 and 2017 , expected volatilities for the ESPP were equal to the historical volatility for the previous six-month periods. The expected risk-free interest rates were based on the yields of U.S. Treasury securities, as reported by the Federal Reserve Bank of New York, with maturities equal to the expected terms of the employee stock options. Share-Based Payment Award Activity The table below provides stock option information related to the 2006 Equity Incentive Plan for the year ended December 31, 2019 : Options Weighted Average Exercise Price Weighted Average Remaining Contractual Life - in Years Aggregate Intrinsic Value of In-The-Money Options Outstanding at December 31, 2018 679,659 $ 137.19 Granted 126,945 249.15 Exercised (154,897 ) 86.96 Forfeited (25,580 ) 213.26 Expired (720 ) 64.37 Outstanding at December 31, 2019 625,407 169.33 3.63 $ 55,364,613 Vested and expected to vest at December 31, 2019 609,849 167.31 3.58 55,128,404 Exercisable at December 31, 2019 361,503 124.70 2.35 46,760,360 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 $251.04 as of December 31, 2019 . The following table summarizes information regarding stock options outstanding and exercisable as of December 31, 2019 : Outstanding Options Exercisable Options Range of Exercise Prices Shares Weighted Average Remaining Contractual Life - in Years Weighted Average Exercise Price Shares Weighted Average Exercise Price $71.11 - 105.14 55,724 0.43 $ 73.67 55,724 $ 73.67 105.15 - 105.84 114,449 3.33 105.18 79,188 105.18 105.85 - 108.59 99,936 1.33 107.94 99,936 107.94 108.60 - 149.65 67,573 2.26 129.13 67,573 129.13 149.66 - 180.62 80,583 4.34 178.07 37,320 178.04 180.63 - 247.01 11,966 6.18 226.22 1,578 210.73 247.02 - 255.58 117,265 6.33 250.43 — — 255.59 - 315.12 75,647 5.33 305.18 19,617 304.39 315.13 - 324.77 2,264 5.60 324.77 567 324.77 Total 625,407 3.63 169.33 361,503 124.70 We expect to satisfy the exercise of stock options by issuing shares under the 2006 Incentive Plan. All future awards of stock options and restricted stock units will be issued from the 2006 Incentive Plan. At December 31, 2019 , 3,421,734 shares were available for future issuance. The table below provides information for restricted stock units under the 2006 Equity Incentive Plan for the year ended December 31, 2019 : Shares Weighted Average Grant Date Fair Value Nonvested at December 31, 2018 597,296 $ 194.48 Granted (1) 543,938 243.65 Vested (227,707 ) 154.96 Forfeited (65,555 ) 195.69 Nonvested at December 31, 2019 847,972 236.54 (1) On February 1, 2019, we granted 125,160 restricted stock awards to SVB Leerink employees at a market price of $238.28 under the retention plan previously announced on November 13, 2018. The restricted stock awards will vest over a five -year period. The following table summarizes information regarding stock option and restricted stock unit activity during 2019 , 2018 and 2017 : Year ended December 31, (Dollars in thousands) 2019 2018 2017 Total intrinsic value of stock options exercised $ 23,088 $ 40,681 $ 36,173 Total grant date fair value of stock options vested 5,735 5,823 6,094 Total intrinsic value of restricted stock vested 56,101 63,917 40,925 Total grant date fair value of restricted stock vested 35,191 28,813 23,383

Variable Interest Entities

Variable Interest Entities	12 Months Ended
Variable Interest Entities	Dec. 31, 2019
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 our investments in qualified affordable housing projects. The following table presents the carrying amounts and classification of significant variable interests in consolidated and unconsolidated VIEs as of December 31, 2019 and December 31, 2018 : (Dollars in thousands) Consolidated VIEs Unconsolidated VIEs Maximum Exposure to Loss in Unconsolidated VIEs 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 $ — December 31, 2018: Assets: Cash and cash equivalents $ 9,058 $ — $ — Non-marketable and other equity securities (1) 221,646 568,272 568,272 Accrued interest receivable and other assets 228 — — Total assets $ 230,932 $ 568,272 $ 568,272 Liabilities: Other liabilities (1) 919 205,685 — Total liabilities $ 919 $ 205,685 $ — (1) Included in our unconsolidated non-marketable and other equity securities portfolio at December 31, 2019 and December 31, 2018 are investments in qualified affordable housing projects of $458.5 million and $318.6 million , respectively, and related other liabilities consisting of unfunded commitments of $302.0 million and $205.7 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-SVB, debt funds, private and public portfolio companies, including public equity securities held as a result of equity warrant assets exercised and investments in qualified affordable housing projects. A majority of these investments are through third-party funds held by SVB Financial 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 non-redeemable 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 22—“Off-Balance Sheet Arrangements, Guarantees and Other Commitments” of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report . The Bank also has variable interests in low income housing tax credit funds, in connection with fulfilling its responsibilities under the Community Reinvestment Act ("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 significant activities of the VIE; therefore, these investments are not consolidated. For additional information on our investments in qualified affordable housing projects see Note 9—“Investment Securities" of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report . As of December 31, 2019 , our exposure to loss with respect to the consolidated VIEs is limited to our net assets of $275.9 million and our exposure to loss for our unconsolidated VIEs is equal to our investment in these assets of $689.4 million .

Reserves on Deposit with the Fe

Reserves on Deposit with the Federal Reserve Bank and Federal Bank Stock	12 Months Ended
	Dec. 31, 2019
Federal Home Loan Bank Stock and Federal Reserve Bank Stock [Abstract]
Reserves on Deposit with the Federal Reserve Bank and Federal Bank Stock	Reserves on Deposit with the Federal Reserve Bank and Federal Bank Stock The Bank is required to maintain reserves against customer deposits by keeping balances with the Federal Reserve. The cash balances at the Federal Reserve are classified as cash and cash equivalents. Additionally, as a member of the FHLB and FRB, we are required to hold shares of FHLB and FRB stock under the Bank's borrowing agreement. FHLB and FRB stock are recorded at cost as a component of other assets, and any cash dividends received are recorded as a component of other noninterest income. The tables below provide information on the required reserve balances at the Federal Reserve, as well as shares held at the FHLB and FRB for the years ended and as of December 31, 2019 and 2018 : Year ended December 31, (Dollars in thousands) 2019 2018 Average required reserve balances at FRB San Francisco $ 315,784 $ 455,866 December 31, (Dollars in thousands) 2019 2018 FHLB stock holdings $ 17,250 $ 17,250 FRB stock holdings 43,008 41,628

Cash and Cash Equivalents

Cash and Cash Equivalents	12 Months Ended
Cash and Cash Equivalents	Dec. 31, 2019
Cash and Cash Equivalents [Abstract]
Cash and Cash Equivalents	Cash and Cash Equivalents The following table details our cash and cash equivalents at December 31, 2019 and December 31, 2018 : (Dollars in thousands) December 31, 2019 December 31, 2018 Cash and due from banks (1) $ 6,492,443 $ 3,444,971 Securities purchased under agreements to resell (2) 289,340 123,611 Other short-term investment securities — 2,957 Total cash and cash equivalents $ 6,781,783 $ 3,571,539 (1) At December 31, 2019 and 2018 , $3.7 billion and $1.7 billion , respectively, of our cash and due from banks was deposited at the FRB and was earning interest at the Federal Funds target rate, and interest-earning deposits in other financial institutions were $2.1 billion and $1.2 billion , respectively. (2) At December 31, 2019 and 2018 , securities purchased under agreements to resell were collateralized by U.S. Treasury securities and U.S. agency securities with aggregate fair values of $295 million and $126 million , respectively. None of these securities were sold or repledged as of December 31, 2019 and 2018 . Additional information regarding our securities purchased under agreements to resell for 2019 and 2018 are as follows: Year ended December 31, (Dollars in thousands) 2019 2018 Average securities purchased under agreements to resell $ 166,205 $ 132,938 Maximum amount outstanding at any month-end during the year 613,247 375,180

Investment Securities

Investment Securities	12 Months Ended
Investment Securities	Dec. 31, 2019
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 as well as public equity securities held as a result of equity warrant assets exercised. Available-for-Sale Securities The major components of our AFS investment securities portfolio at 2019 and 2018 are as follows: 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 December 31, 2018 (Dollars in thousands) Amortized Cost Unrealized Gains Unrealized Losses Carrying Value Available-for-sale securities, at fair value: U.S. Treasury securities $ 4,762,182 $ 11,638 $ (35,562 ) $ 4,738,258 U.S. agency debentures 1,090,426 61 (6,370 ) 1,084,117 Foreign government debt securities 5,815 — (3 ) 5,812 Residential mortgage-backed securities: Agency-issued collateralized mortgage obligations—fixed rate 1,922,618 — (42,400 ) 1,880,218 Agency-issued collateralized mortgage obligations—variable rate 81,270 383 (15 ) 81,638 Total available-for-sale securities $ 7,862,311 $ 12,082 $ (84,350 ) $ 7,790,043 The following table summarizes sale activity of available-for-sale securities as recorded in the line item “Gains on investment securities, net," a component of noninterest income: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Sales proceeds $ 2,189,087 $ 474,482 $ 580,871 Net realized gains and losses: Gross realized gains 1,250 127 5,113 Gross realized losses (5,155 ) (867 ) (10,302 ) Net realized losses $ (3,905 ) $ (740 ) $ (5,189 ) The following tables summarize our unrealized losses on our AFS securities portfolio into categories of less than 12 months, or 12 months or longer as of December 31, 2019 and 2018 : December 31, 2019 Less than 12 months 12 months or longer (1) Total (Dollars in thousands) Fair Value of Investments Unrealized Losses Fair Value of Investments Unrealized Losses Fair Value of Investments Unrealized Losses 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 temporarily impaired 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 impaired position for a period of time greater than 12 months. As of December 31, 2019 , we do not intend to sell any of our impaired securities prior to recovery of our adjusted 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 adjusted cost basis. Based on our analysis as of December 31, 2019 , we deem all impairments to be temporary, and therefore changes in value for our temporarily impaired securities as of the same date are included in other comprehensive income. Market valuations and impairment analyses on assets in the AFS securities portfolio are reviewed and monitored on a quarterly basis. December 31, 2018 Less than 12 months 12 months or longer (1) Total (Dollars in thousands) Fair Value of Investments Unrealized Losses Fair Value of Investments Unrealized Losses Fair Value of Investments Unrealized Losses Available-for-sale securities: U.S. Treasury securities $ 494,287 $ (3,785 ) $ 3,568,119 $ (31,777 ) $ 4,062,406 $ (35,562 ) U.S. agency debentures 443,790 (1,602 ) 591,216 (4,768 ) 1,035,006 (6,370 ) Foreign government debt securities 5,812 (3 ) — — 5,812 (3 ) Residential mortgage-backed securities: Agency-issued collateralized mortgage obligations—fixed rate 13,430 (22 ) 1,866,788 (42,378 ) 1,880,218 (42,400 ) Agency-issued collateralized mortgage obligations—variable rate — — 13,516 (15 ) 13,516 (15 ) Total temporarily impaired securities (1) $ 957,319 $ (5,412 ) $ 6,039,639 $ (78,938 ) $ 6,996,958 $ (84,350 ) (1) As of December 31, 2018 , we identified a total of 200 investments that were in unrealized loss positions, of which 162 investments totaling $6.0 billion with unrealized losses of $78.9 million have been in an impaired position for a period of time greater than 12 months. The following table summarizes the fixed income securities, carried at fair value, classified as AFS as of December 31, 2019 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 AFS 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. December 31, 2019 (Dollars in thousands) Total One Year After One After Five After U.S. Treasury securities $ 6,894,010 $ 1,835,971 $ 1,890,778 $ 3,167,261 $ — U.S. agency debentures 99,547 — — 99,547 — Foreign government debt securities 9,038 9,038 — — — Residential mortgage-backed securities: Agency-issued collateralized mortgage-backed securities 4,148,791 — — — 4,148,791 Agency-issued collateralized mortgage obligations—fixed rate 1,538,343 — — 1,858 1,536,485 Agency -issued commercial mortgage-backed securities 1,325,190 — — 743,874 581,316 Total $ 14,014,919 $ 1,845,009 $ 1,890,778 $ 4,012,540 $ 6,266,592 Held-to-Maturity Securities The components of our HTM investment securities portfolio at December 31, 2019 and 2018 are as follows: December 31, 2019 (Dollars in thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value Held-to-maturity securities, at 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. December 31, 2018 (Dollars in thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value Held-to-maturity securities, at cost: U.S. agency debentures (1) $ 640,990 $ 2,148 $ (4,850 ) $ 638,288 Residential mortgage-backed securities: Agency-issued mortgage-backed securities 8,103,638 5,011 (157,767 ) 7,950,882 Agency-issued collateralized mortgage obligations—fixed rate 2,183,204 — (62,272 ) 2,120,932 Agency-issued collateralized mortgage obligations—variable rate 214,483 608 (14 ) 215,077 Agency-issued commercial mortgage-backed securities 2,769,706 6,969 (64,374 ) 2,712,301 Municipal bonds and notes 1,575,421 2,304 (26,969 ) 1,550,756 Total held-to-maturity securities $ 15,487,442 $ 17,040 $ (316,246 ) $ 15,188,236 (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. The following tables summarize our unrealized losses on our HTM securities portfolio into categories of less than 12 months and 12 months or longer as of December 31, 2019 and 2018 : December 31, 2019 Less than 12 months 12 months or longer (1) Total (Dollars in thousands) Fair Value of Investments Unrealized Losses Fair Value of Investments Unrealized Losses Fair Value of Investments Unrealized Losses Held-to-maturity securities: U.S. agency debentures $ 125,304 $ (668 ) $ — $ — $ 125,304 $ (668 ) Residential mortgage-backed securities: Agency-issued mortgage-backed securities 132,042 (420 ) 181,585 (1,646 ) 313,627 (2,066 ) Agency-issued collateralized mortgage obligations—fixed rate 350,868 (1,131 ) 872,527 (7,371 ) 1,223,395 (8,502 ) Agency-issued collateralized mortgage obligations—variable rate 143,265 (256 ) 4,615 (3 ) 147,880 (259 ) Agency-issued commercial mortgage-backed securities 307,087 (1,818 ) 310,229 (2,690 ) 617,316 (4,508 ) Municipal bonds and notes 160,414 (1,434 ) — — 160,414 (1,434 ) Total temporarily impaired securities (1) $ 1,218,980 $ (5,727 ) $ 1,368,956 $ (11,710 ) $ 2,587,936 $ (17,437 ) (1) As of December 31, 2019 , we identified a total of 266 investments that were in unrealized loss positions, of which 143 investments totaling $1.4 billion with unrealized losses of $11.7 million have been in an impaired position for a period of time greater than 12 months. As of December 31, 2019 , we do not intend to sell any of our impaired securities prior to recovery of our adjusted 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 adjusted cost basis, which is consistent with our classification of these securities. Based on our analysis as of December 31, 2019 , we deem all impairments to be temporary. Market valuations and impairment analyses on assets in the HTM securities portfolio are reviewed and monitored on a quarterly basis. December 31, 2018 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 Held-to-maturity securities: U.S. agency debentures $ 291,432 $ (2,915 ) $ 66,624 $ (1,935 ) $ 358,056 $ (4,850 ) Residential mortgage-backed securities: Agency-issued mortgage-backed securities 2,493,156 (34,956 ) 3,972,690 (122,811 ) 6,465,846 (157,767 ) Agency-issued collateralized mortgage obligations—fixed rate 16,952 (109 ) 2,103,980 (62,163 ) 2,120,932 (62,272 ) Agency-issued collateralized mortgage obligations—variable rate 3,364 (1 ) 8,101 (13 ) 11,465 (14 ) Agency-issued commercial mortgage-backed securities 177,697 (1,580 ) 1,600,277 (62,794 ) 1,777,974 (64,374 ) Municipal bonds and notes 868,751 (17,075 ) 340,413 (9,894 ) 1,209,164 (26,969 ) Total temporarily impaired securities (1) $ 3,851,352 $ (56,636 ) $ 8,092,085 $ (259,610 ) $ 11,943,437 $ (316,246 ) (1) As of December 31, 2018 , we identified a total of 1,244 investments that were in unrealized loss positions, of which 695 investments totaling $8.1 billion with unrealized losses of $259.6 million The following table summarizes the remaining contractual principal maturities on fixed income investment securities classified as HTM as of December 31, 2019 . For U.S. agency debentures, 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 HTM 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. December 31, 2019 Total One Year or Less After One Year to Five Years After Five Years to Ten Years After Ten Years (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 $ 518,728 $ 524,700 $ — $ — $ 123,100 $ 123,969 $ 395,628 $ 400,731 $ — $ — Residential mortgage-backed securities: Agency-issued mortgage-backed securities 6,992,009 7,132,152 2,066 2,117 76,759 76,956 726,422 725,854 6,186,762 6,327,225 Agency-issued collateralized mortgage obligations - fixed rate 1,608,032 1,600,122 — — — — 624,128 619,180 983,904 980,942 Agency-issued collateralized mortgage obligations - variable rate 178,611 178,446 — — — — — — 178,611 178,446 Agency-issued commercial mortgage-backed securities 2,759,615 2,812,021 — — — — 102,633 110,836 2,656,982 2,701,185 Municipal bonds and notes 1,785,951 1,867,831 13,973 13,984 83,368 84,773 387,278 403,736 1,301,332 1,365,338 Total $ 13,842,946 $ 14,115,272 $ 16,039 $ 16,101 $ 283,227 $ 285,698 $ 2,236,089 $ 2,260,337 $ 11,307,591 $ 11,553,136 Non-marketable and Other Equity Securities The major components of our non-marketable and other equity securities portfolio at December 31, 2019 and 2018 are as follows: (Dollars in thousands) December 31, 2019 December 31, 2018 Non-marketable and other equity securities: Non-marketable securities (fair value accounting): Consolidated venture capital and private equity fund investments (1) $ 87,180 $ 118,333 Unconsolidated venture capital and private equity fund investments (2) 178,217 201,098 Other investments without a readily determinable fair value (3) 55,255 25,668 Other equity securities in public companies (fair value accounting) (4) 59,200 20,398 Non-marketable securities (equity method accounting) (5): Venture capital and private equity fund investments 215,367 129,485 Debt funds 7,271 5,826 Other investments 152,863 121,721 Investments in qualified affordable housing projects, net (6) 458,476 318,575 Total non-marketable and other equity securities $ 1,213,829 $ 941,104 (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 December 31, 2019 and 2018 (fair value accounting): December 31, 2019 December 31, 2018 (Dollars in thousands) Amount Ownership % Amount Ownership % Strategic Investors Fund, LP $ 5,729 12.6 % $ 12,452 12.6 % Capital Preferred Return Fund, LP 45,341 20.0 53,957 20.0 Growth Partners, LP 35,976 33.0 50,845 33.0 CP I, LP 134 10.7 1,079 10.7 Total consolidated venture capital and private equity fund investments $ 87,180 $ 118,333 (2) The carrying value represents investments in 205 and 213 funds (primarily venture capital funds) at December 31, 2019 and December 31, 2018 , 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 September 30 th for our December 31 st 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 carrying amount of other investments without a readily determinable fair value at December 31, 2019, and the amounts recognized in earnings for the year ended December 31, 2019 and on a cumulative basis: (Dollars in thousands) Year ended December 31, 2019 Cumulative Adjustments Measurement alternative: Carrying value at December 31, 2019 $ 55,255 Carrying value adjustments: Impairment $ (460 ) $ (460 ) Upward changes for observable prices 1,929 2,348 Downward changes for observable prices (3,511 ) (5,030 ) (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, direct equity investments in public companies held by our consolidated funds, and exchange traded funds held by SVB Leerink. Changes in equity securities measured at fair value are recognized through net income. (5) The following table shows the carrying value and our ownership percentage of each investment at December 31, 2019 and 2018 (equity method accounting): December 31, 2019 December 31, 2018 (Dollars in thousands) Amount Ownership % Amount Ownership % Venture capital and private equity fund investments: Strategic Investors Fund II, LP $ 3,612 8.6 % $ 4,670 8.6 % Strategic Investors Fund III, LP 15,668 5.9 17,396 5.9 Strategic Investors Fund IV, LP 27,064 5.0 28,974 5.0 Strategic Investors Fund V funds 46,830 Various 28,189 Various CP II, LP (i) 5,907 5.1 7,122 5.1 Other venture capital and private equity fund investments 116,286 Various 43,134 Various Total venture capital and private equity fund investments $ 215,367 $ 129,485 Debt funds: Gold Hill Capital 2008, LP (ii) $ 5,525 15.5 % $ 3,901 15.5 % Other debt funds 1,746 Various 1,925 Various Total debt funds $ 7,271 $ 5,826 Other investments: SPD Silicon Valley Bank Co., Ltd. $ 74,190 50.0 % $ 76,412 50.0 % Other investments 78,673 Various 45,309 Various Total other investments $ 152,863 $ 121,721 (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 December 31, 2019 and 2018 : (Dollars in thousands) December 31, 2019 December 31, 2018 Investments in qualified affordable housing projects, net $ 458,476 $ 318,575 Other liabilities 302,031 205,685 The following table presents other information relating to our investments in qualified affordable housing projects for the years ended December 31, 2019 , 2018 and 2017 : Year ended December 31, (Dollars in thousands) 2019 2018 2017 Tax credits and other tax benefits recognized $ 35,037 $ 24,047 $ 17,296 Amortization expense included in provision for income taxes (i) 28,267 18,876 17,362 (i) All investments are amortized using the proportional amortization method and amortization expense is included in the provision for income taxes. Included in amortization expense for the year ended December 31, 2017 is a one-time cumulative effect adjustment of $3.8 million due to the decrease in value of deductions in the 2018 tax year and going forward, due to the TCJ Act federal corporate income tax rate reduction. The following table presents the net gains and losses on non-marketable and other equity securities in 2019 , 2018 and 2017 as recorded in the line item “Gains on investment securities, net," a component of noninterest income: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Net gains (losses) on non-marketable and other equity securities: Non-marketable securities (fair value accounting): Consolidated venture capital and private equity fund investments $ 22,507 $ 20,999 $ 27,186 Unconsolidated venture capital and private equity fund investments (1) 31,482 39,075 21,377 Other investments without a readily determinable fair value (1) 2,742 3,206 3,842 Other equity securities in public companies (fair value accounting) (1) 7,772 (25,483 ) 241 Non-marketable securities (equity method accounting): Venture capital and private equity fund investments 73,813 49,341 14,472 Debt funds 1,647 541 8,950 Other investments (1,388 ) 1,155 (6,276 ) Total net gains on non-marketable and other equity securities $ 138,575 $ 88,834 $ 69,792 Less: Realized net gains (losses) on the sales and OTTI of non-marketable and other equity securities (2) 4,744 (26,097 ) (355 ) Net gains on non-marketable and other equity securities still held $ 133,831 $ 114,931 $ 70,147 (1) Presentation for year-ended December 31, 2017 amounts are not determined in a manner consistent with the December 31, 2018 and 2019 presentation due to the adoption of ASU 2016-01. (2) Realized gains and losses include sales and OTTI of non-marketable and other equity securities. Includes gains of $5.2 million on sales and $0.4 million of OTTI for the period ended December 31, 2019 . Includes losses of $20.8 million and gains of $3.8 million on sales and $5.3 million and $4.2 million of OTTI for the periods ended December 31, 2018 and 2017 , respectively.

Loans, Allowance for Loan Losse

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments	Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments We 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 (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"). Because of the diverse nature of ERI products and services, for our loan-related reporting purposes, ERI-related loans are reported under our hardware, software/internet, life science/healthcare and other commercial loan categories, as applicable. Our life science/healthcare clients primarily tend to be in the industries of biotechnology, medical devices, healthcare information technology and healthcare services. Loans made to private equity/venture capital firm clients typically enable them to fund investments prior to their receipt of funds from capital calls. 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. Our private banking clients are primarily private equity/venture capital professionals and executive leaders in the innovation companies they support. These products and services include real estate secured home equity lines of credit, which may be used to finance real estate investments and loans used to purchase, renovate or refinance personal residences. These products and services also include restricted stock purchase loans and capital call lines of credit. We also provide community development loans made as part of our responsibilities under the Community Reinvestment Act. These loans are included within “Construction loans” below and are primarily secured by real estate. The composition of loans, net of unearned income of $163 million and $173 million at December 31, 2019 and 2018 , respectively, is presented in the following table: December 31, (Dollars in thousands) 2019 2018 Commercial loans: Software/internet $ 6,199,548 $ 6,154,755 Hardware 1,371,159 1,234,557 Private equity/venture capital 17,801,324 14,110,560 Life science/healthcare 2,368,048 2,385,612 Premium wine 267,487 249,266 Other 420,555 321,978 Total commercial loans 28,428,121 24,456,728 Real estate secured loans: Premium wine (1) 820,730 710,397 Consumer loans (2) 3,286,737 2,612,971 Other 38,880 40,435 Total real estate secured loans 4,146,347 3,363,803 Construction loans 100,219 97,077 Consumer loans 489,949 420,672 Total loans, net of unearned income (3) $ 33,164,636 $ 28,338,280 (1) Included in our premium wine portfolio are gross construction loans of $83 million and $99 million at December 31, 2019 and 2018 , respectively. (2) Consumer loans secured by real estate at December 31, 2019 and 2018 were comprised of the following: December 31, (Dollars in thousands) 2019 2018 Loans for personal residence $ 2,829,880 $ 2,251,292 Loans to eligible employees 401,396 290,194 Home equity lines of credit 55,461 71,485 Consumer loans secured by real estate $ 3,286,737 $ 2,612,971 (3) Included within our total loan portfolio are credit card loans of $395 million and $335 million at December 31, 2019 and 2018 , respectively. Credit Quality The composition of loans, net of unearned income of $163 million and $173 million at December 31, 2019 and 2018 , respectively, broken out by portfolio segment and class of financing receivable, is as follows: December 31, (Dollars in thousands) 2019 2018 Commercial loans: Software/internet $ 6,199,548 $ 6,154,755 Hardware 1,371,159 1,234,557 Private equity/venture capital 17,801,324 14,110,560 Life science/healthcare 2,368,048 2,385,612 Premium wine 1,088,217 959,663 Other 559,654 459,490 Total commercial loans 29,387,950 25,304,637 Consumer loans: Real estate secured loans 3,286,737 2,612,971 Other consumer loans 489,949 420,672 Total consumer loans 3,776,686 3,033,643 Total loans, net of unearned income $ 33,164,636 $ 28,338,280 The following table summarizes the aging of our gross loans, broken out by portfolio segment and class of financing receivable as of December 31, 2019 and 2018 : (Dollars in thousands) 30 - 59 Days Past Due 60 - 89 Days Past Due Equal to or Greater Than 90 Days Past Due Total Past Due Current Loans Past Due 90 Days or More Still Accruing Interest December 31, 2019: Commercial loans: Software/internet $ 19,839 $ 4,225 $ — $ 24,064 $ 6,136,230 $ — Hardware 104 18,084 — 18,188 1,357,379 — Private equity/venture capital 97,893 383 3,150 101,426 17,715,964 3,150 Life science/healthcare 445 8,420 — 8,865 2,387,203 — Premium wine 7,543 — — 7,543 1,070,111 — Other 9 24 — 33 579,446 — Total commercial loans 125,833 31,136 3,150 160,119 29,246,333 3,150 Consumer loans: Real estate secured loans 6,282 — 365 6,647 3,271,318 365 Other consumer loans 164 283 — 447 489,831 — Total consumer loans 6,446 283 365 7,094 3,761,149 365 Total gross loans excluding impaired loans 132,279 31,419 3,515 167,213 33,007,482 3,515 Impaired loans 5,096 6,805 12,473 24,374 128,635 — Total gross loans $ 137,375 $ 38,224 $ 15,988 $ 191,587 $ 33,136,117 $ 3,515 December 31, 2018: Commercial loans: Software/internet $ 28,134 $ 6,944 $ 378 $ 35,456 $ 6,059,672 $ 378 Hardware 300 34 4 338 1,233,956 4 Private equity/venture capital 59,481 11 — 59,492 14,054,940 — Life science/healthcare 16,082 817 19 16,918 2,410,091 19 Premium wine 2,953 14 — 2,967 956,285 — Other 7,391 163 1 7,555 477,442 1 Total commercial loans 114,341 7,983 402 122,726 25,192,386 402 Consumer loans: Real estate secured loans 3,598 1,750 1,562 6,910 2,598,496 1,562 Other consumer loans 361 — — 361 420,359 — Total consumer loans 3,959 1,750 1,562 7,271 3,018,855 1,562 Total gross loans excluding impaired loans 118,300 9,733 1,964 129,997 28,211,241 1,964 Impaired loans 2,843 1,181 25,092 29,116 140,958 — Total gross loans $ 121,143 $ 10,914 $ 27,056 $ 159,113 $ 28,352,199 $ 1,964 The following table summarizes our impaired loans as they relate to our allowance for loan losses, broken out by portfolio segment and class of financing receivable for the years ended December 31, 2019 and 2018 : (Dollars in thousands) Impaired loans for which there is a related allowance for loan losses Impaired loans for which there is no related allowance for loan losses Total carrying value of impaired loans Total unpaid principal of impaired loans December 31, 2019: Commercial loans: Software/internet $ 64,100 $ 31,472 $ 95,572 $ 109,736 Hardware 2,143 3,315 5,458 10,049 Private equity/venture capital — — — — Life science/healthcare 25,941 5,671 31,612 70,600 Premium wine 204 11,718 11,922 12,010 Other 1,284 1,681 2,965 3,114 Total commercial loans 93,672 53,857 147,529 205,509 Consumer loans: Real estate secured loans 1,766 3,714 5,480 8,527 Total consumer loans 1,766 3,714 5,480 8,527 Total $ 95,438 $ 57,571 $ 153,009 $ 214,036 December 31, 2018: Commercial loans: Software/internet $ 49,625 $ 65,225 $ 114,850 $ 131,858 Hardware 1,256 10,250 11,506 12,159 Private equity/venture capital — 3,700 3,700 3,700 Life science/healthcare 17,791 16,276 34,067 44,446 Premium wine — 1,301 1,301 1,365 Other 411 — 411 411 Total commercial loans 69,083 96,752 165,835 193,939 Consumer loans: Real estate secured loans 3,919 320 4,239 5,969 Total consumer loans 3,919 320 4,239 5,969 Total $ 73,002 $ 97,072 $ 170,074 $ 199,908 The following table summarizes our average impaired loans and interest income recognized on impaired loans, broken out by portfolio segment and class of financing receivable during 2019 , 2018 and 2017 : Year ended December 31, (Dollars in thousands) Average impaired loans Interest income recognized on impaired loans 2019 2018 2017 2019 2018 2017 Commercial loans: Software/internet $ 88,628 $ 112,493 $ 119,557 $ 2,813 $ 1,513 $ 2,263 Hardware 12,500 28,540 35,022 464 312 1,061 Private equity/venture capital 2,264 1,327 556 — — — Life science/healthcare 44,827 30,144 30,842 919 756 90 Premium wine 2,912 2,605 3,249 311 68 152 Other 2,050 171 576 21 — — Total commercial loans 153,181 175,280 189,802 4,528 2,649 3,566 Consumer loans: Real estate secured loans 7,159 4,028 1,514 54 15 — Other consumer loans 7 358 1,804 — — — Total consumer loans 7,166 4,386 3,318 54 15 — Total average impaired loans $ 160,347 $ 179,666 $ 193,120 $ 4,582 $ 2,664 $ 3,566 The following tables summarize the activity relating to our allowance for loan losses for 2019 , 2018 and 2017 broken out by portfolio segment: Year ended December 31, 2019 (Dollars in thousands) Beginning Balance December 31, 2018 Charge-offs Recoveries Provision for Loan Losses Foreign Currency Translation Adjustments Ending Balance December 31, 2019 Commercial loans: Software/internet $ 103,567 $ (46,930 ) $ 11,363 $ 31,766 $ 457 $ 100,223 Hardware 19,725 (10,056 ) 7,069 2,740 166 19,644 Private equity/venture capital 98,581 (2,047 ) 2,047 16,989 235 115,805 Life science/healthcare 32,180 (31,950 ) 267 38,178 570 39,245 Premium wine 3,355 (174 ) — 1,813 154 5,148 Other 3,558 (415 ) 36 328 (154 ) 3,353 Total commercial loans 260,966 (91,572 ) 20,782 91,814 1,428 283,418 Consumer loans 19,937 (1,031 ) 256 2,369 (25 ) 21,506 Total allowance for loan losses $ 280,903 $ (92,603 ) $ 21,038 $ 94,183 $ 1,403 $ 304,924 Year ended December 31, 2018 (Dollars in thousands) Beginning Balance December 31, 2017 Charge-offs Recoveries Provision for (Reduction of) Loan Losses Foreign Currency Translation Adjustments Ending Balance December 31, 2018 Commercial loans: Software/internet $ 96,104 $ (42,315 ) $ 5,664 $ 45,068 $ (954 ) $ 103,567 Hardware 27,614 (16,148 ) 1,849 6,555 (145 ) 19,725 Private equity/venture capital 82,468 (112 ) 13 16,485 (273 ) 98,581 Life science/healthcare 24,924 (6,662 ) 348 14,347 (777 ) 32,180 Premium wine 3,532 — — (182 ) 5 3,355 Other 3,941 (2,391 ) 3,275 (1,320 ) 53 3,558 Total commercial loans 238,583 (67,628 ) 11,149 80,953 (2,091 ) 260,966 Consumer loans 16,441 (289 ) 487 3,339 (41 ) 19,937 Total allowance for loan losses $ 255,024 $ (67,917 ) $ 11,636 $ 84,292 $ (2,132 ) $ 280,903 Year ended December 31, 2017 Beginning Balance December 31, 2016 Charge-offs Recoveries Provision for (Reduction of) Loan Losses Foreign Currency Translation Adjustments Ending Balance December 31, 2017 Commercial loans: Software/internet $ 97,388 $ (45,012 ) $ 4,649 $ 38,462 $ 617 $ 96,104 Hardware 31,166 (10,414 ) 487 6,051 324 27,614 Private equity/venture capital 50,299 (323 ) — 31,625 867 82,468 Life science/healthcare 25,446 (8,210 ) 189 7,414 85 24,924 Premium wine 4,115 — — (540 ) (43 ) 3,532 Other 4,768 (1,156 ) 1,850 (1,459 ) (62 ) 3,941 Total commercial loans 213,182 (65,115 ) 7,175 81,553 1,788 238,583 Consumer loans 12,184 (1,567 ) 1,363 4,386 75 16,441 Total allowance for loan losses $ 225,366 $ (66,682 ) $ 8,538 $ 85,939 $ 1,863 $ 255,024 The following table summarizes the activity relating to our allowance for unfunded credit commitments for 2019 , 2018 and 2017 : Year ended December 31, (Dollars in thousands) 2019 2018 2017 Allowance for unfunded credit commitments, beginning balance $ 55,183 $ 51,770 $ 45,265 Provision for unfunded credit commitments 12,233 3,578 6,365 Foreign currency translation adjustments 240 (165 ) 140 Allowance for unfunded credit commitments, ending balance (1) $ 67,656 $ 55,183 $ 51,770 (1) The “allowance for unfunded credit commitments” is included as a component of “other liabilities” on our consolidated balance sheets. See Note 22—“Off-Balance Sheet Arrangements, Guarantees and Other Commitments” of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report for additional disclosures related to our commitments to extend credit. The following table summarizes the allowance for loan losses individually and collectively evaluated for impairment as of December 31, 2019 and 2018 , broken out by portfolio segment: December 31, 2019 December 31, 2018 Individually Evaluated for Impairment Collectively Evaluated for Impairment Individually Evaluated for Impairment Collectively Evaluated for Impairment (Dollars in thousands) Allowance for loan losses Recorded investment in loans Allowance for loan losses Recorded investment in loans Allowance for loan losses Recorded investment in loans Allowance for loan losses Recorded investment in loans Commercial loans: Software/internet $ 26,613 $ 95,572 $ 73,610 $ 6,103,976 $ 28,527 $ 114,850 $ 75,040 $ 6,039,905 Hardware 1,214 5,458 18,430 1,365,701 1,253 11,506 18,472 1,223,051 Private equity/venture capital — — 115,805 17,801,324 — 3,700 98,581 14,106,860 Life science/healthcare 16,414 31,612 22,831 2,336,436 7,484 34,067 24,696 2,351,545 Premium wine 204 11,922 4,944 1,076,295 — 1,301 3,355 958,362 Other 203 2,965 3,150 556,689 411 411 3,147 459,079 Total commercial loans 44,648 147,529 238,770 29,240,421 37,675 165,835 223,291 25,138,802 Total consumer loans 211 5,480 21,295 3,771,206 266 4,239 19,671 3,029,404 Total $ 44,859 $ 153,009 $ 260,065 $ 33,011,627 $ 37,941 $ 170,074 $ 242,962 $ 28,168,206 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 “Performing (Criticized).” When full repayment of a criticized loan has been deemed improbable under the original contractual terms but full repayment remains probable overall, the loan is considered to be a “Performing Impaired (Criticized)” loan. All of our nonaccrual loans are risk-rated 8 or 9 and are classified under the nonperforming impaired category. (For a further description of nonaccrual loans, refer to Note 2—“Summary of Significant Accounting Policies” of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report ). Loans rated 10 are charged-off and are not included as part of our loan portfolio balance. We review our credit quality indicators for performance and appropriateness of risk ratings as part of our evaluation process for our allowance for loan losses. The following table summarizes the credit quality indicators, broken out by portfolio segment and class of financing receivables as of December 31, 2019 and 2018 : (Dollars in thousands) Pass Performing (Criticized) Performing Impaired (Criticized) Nonperforming Impaired (Nonaccrual) Total December 31, 2019: Commercial loans: Software/internet $ 5,704,283 $ 456,011 $ 28,417 $ 67,155 $ 6,255,866 Hardware 1,266,077 109,490 3,315 2,143 1,381,025 Private equity/venture capital 17,813,128 4,262 — — 17,817,390 Life science/healthcare 2,197,679 198,389 5,211 26,401 2,427,680 Premium wine 1,053,021 24,633 11,717 205 1,089,576 Other 571,040 8,439 1,680 1,285 582,444 Total commercial loans 28,605,228 801,224 50,340 97,189 29,553,981 Consumer loans: Real estate secured loans 3,266,748 11,217 — 5,480 3,283,445 Other consumer loans 489,903 375 — — 490,278 Total consumer loans 3,756,651 11,592 — 5,480 3,773,723 Total gross loans $ 32,361,879 $ 812,816 $ 50,340 $ 102,669 $ 33,327,704 December 31, 2018: Commercial loans: Software/internet $ 5,574,332 $ 520,796 $ 48,069 $ 66,781 $ 6,209,978 Hardware 1,146,985 87,309 10,250 1,256 1,245,800 Private equity/venture capital 14,098,281 16,151 — 3,700 14,118,132 Life science/healthcare 2,291,356 135,653 16,276 17,791 2,461,076 Premium wine 909,965 49,287 1,017 284 960,553 Other 467,653 17,344 — 411 485,408 Total commercial loans 24,488,572 826,540 75,612 90,223 25,480,947 Consumer loans: Real estate secured loans 2,584,261 21,145 320 3,919 2,609,645 Other consumer loans 419,771 949 — — 420,720 Total consumer loans 3,004,032 22,094 320 3,919 3,030,365 Total gross loans $ 27,492,604 $ 848,634 $ 75,932 $ 94,142 $ 28,511,312 Troubled Debt Restructurings As of December 31, 2019 we had 23 TDRs with a total carrying value of $109.0 million where concessions have been granted to borrowers experiencing financial difficulties, in an attempt to maximize collection. This compares to 17 TDRs with a total carrying value of $83.7 million as of December 31, 2018 . There were unfunded commitments available for funding of $0.8 million to the clients associated with these TDRs as of December 31, 2019 . The following table summarizes our loans modified in TDRs, broken out by portfolio segment and class of financing receivables at December 31, 2019 and 2018 : December 31, (Dollars in thousands) 2019 2018 Loans modified in TDRs: Commercial loans: Software/internet $ 71,136 $ 58,089 Hardware 1,685 9,665 Life science/healthcare 20,600 12,738 Premium wine 13,457 2,883 Total commercial loans 106,878 83,375 Consumer loans: Other consumer loans 2,104 320 Total loans modified in TDRs $ 108,982 $ 83,695 The following table summarizes the recorded investment in loans modified in TDRs, broken out by portfolio segment and class of financing receivable, for modifications made during 2019 , 2018 and 2017 : Year ended December 31, (Dollars in thousands) 2019 2018 2017 Loans modified in TDRs during the period: Commercial loans: Software/internet $ 62,367 $ 30,429 $ 42,184 Hardware 1,685 9,665 51,132 Private equity/venture capital — — 350 Life science/healthcare 13,309 660 — Premium wine 11,017 — 177 Total commercial loans 88,378 40,754 93,843 Consumer loans: Other consumer loans 1,793 320 — Total loans modified in TDRs during the period (1) $ 90,171 $ 41,074 $ 93,843 (1) There were $11.3 million , $4.6 million and $3.0 million of partial charge-offs during 2019 , 2018 and 2017 , respectively. During 2019 , $86.9 million of new TDRs were modified through payment deferrals granted to our clients and $3.3 million were modified through partial forgiveness of principal. During 2018 , all new TDRs of $41.1 million were modified through payment deferrals granted to our clients. During 2017 , $93.5 million of new TDRs were modified through payment deferrals granted to our clients and $0.3 million were modified through partial forgiveness of principal. The related allowance for loan losses for the majority of our TDRs is determined on an individual basis by comparing the carrying value of the loan to the present value of the estimated future cash flows, discounted at the pre-modification contractual interest rate. For certain TDRs, the related allowance for loan losses is determined based on the fair value of the collateral if the loan is collateral dependent. The following table summarizes the recorded investment in loans modified in TDRs within the previous 12 months that subsequently defaulted during their respective periods, broken out by portfolio segment and class of financing receivable, during 2019 , 2018 and 2017 : December 31, (Dollars in thousands) 2019 2018 2017 TDRs modified within the previous 12 months that defaulted during the period: Commercial loans: Software/internet $ 37,294 $ — $ — Life science/healthcare 10,639 — — Total TDRs modified within the previous 12 months that defaulted in the period $ 47,933 $ — $ — Charge-offs and defaults on previously restructured loans are evaluated to determine the impact to the allowance for loan losses, if any. The evaluation of these defaults may impact the assumptions used in calculating the reserve on other TDRs and impaired 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 loan losses as of December 31, 2019 .

Premises and Equipment

Premises and Equipment	12 Months Ended
Premises and Equipment	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Premises and Equipment	Premises and Equipment Premises and equipment at December 31, 2019 and 2018 consisted of the following: December 31, (Dollars in thousands) 2019 2018 Computer software $ 261,643 $ 217,017 Computer hardware 82,643 70,247 Leasehold improvements 121,907 98,237 Furniture and equipment 46,300 42,319 Total 512,493 427,820 Accumulated depreciation and amortization (350,617 ) (298,607 ) Premises and equipment, net $ 161,876 $ 129,213 Depreciation and amortization expense for premises and equipment was $42.0 million , $38.1 million and $38.0 million for the years ended 2019 , 2018 and 2017

Leases

Leases	12 Months Ended
Leases	Dec. 31, 2019
Leases [Abstract]
Leases	Leases We have operating leases for our corporate offices, data centers 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 rentals during the term of the lease based on changes in various economic indicators. On January 1, 2019, we adopted the new lease standard ASC 842 and all the related amendments. There were no significant assumptions or judgments required upon applying the new lease standard. 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. The comparative information below has not been restated and continues to be reported under the accounting standards in effect for those periods. Total recorded balances for the lease assets and liabilities are as follows: (Dollars in thousands) December 31, 2019 Assets: Right-of-use assets - operating leases (1) $ 197,365 Liabilities: Lease liabilities - operating leases (1) 218,847 (1) Included in these amounts are $21.7 million and $30.0 million of ROU assets and lease liabilities, respectively, attributable to the inclusion of SVB Leerink in our financial results at December 31, 2019 . The components of our lease cost and supplemental cash flow information related to leases for the year ended December 31, 2019 were as follows: (Dollars in thousands) 2019 Operating lease cost $ 41,049 Short-term lease cost 1,823 Variable lease cost 3,477 Less: sublease income (4,492 ) Total lease expense, net $ 41,857 Supplemental cash flows information: Cash paid for amounts included in the measurement of lease liabilities: Cash paid for operating leases $ 44,976 Noncash items during the period: Lease obligations in exchange for obtaining right-of-use assets: Operating leases $ 33,167 The table below presents additional information related to the Company's leases as of December 31, 2019 : December 31, 2019 Weighted-average remaining term (in years) - operating leases 6.29 Weighted-average discount rate - operating leases (1) 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 December 31, 2019 : Years ended December 31, (Dollars in thousands) Operating Leases 2020 $ 44,791 2021 42,683 2022 37,669 2023 36,914 2024 26,602 2025 and thereafter 52,128 Total lease payments (1) $ 240,787 Less: imputed interest (21,940 ) Total lease liabilities $ 218,847 (1) As of December 31, 2019 , we have additional leases that have not yet commenced. We estimate that we will record additional lease liabilities of $29.1 million upon commencement. These leases will commence in 2020 with lease terms of two to five years . The following table presents minimum future payments under noncancelable operating leases under ASC 840 as of December 31, 2018: (Dollars in thousands) Amount 2019 $ 38,609 2020 37,575 2021 35,854 2022 31,659 2023 30,904 2024 and thereafter 49,071 Total minimum future payments $ 223,672 Rent expense for premises and equipment leased under operating leases, under ASC 840 totaled $34.6 million and $31.3 million in 2018 and 2017, respectively.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
Goodwill and Other Intangible Assets	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill On January 4, 2019, we completed the acquisition of Leerink Holdings LLC, now SVB Leerink. We recognized identifiable intangible assets of $60.9 million and goodwill of $137.8 million as a result of the acquisition. For additional information, refer to Note 3—“Business Combination” of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report. The goodwill of $137.8 million includes revenue generating synergies expected from collaboration between SVB Leerink and the Company. The changes in goodwill were as follows for the year ended December 31, 2019 : (Dollars in thousands) Goodwill Beginning balance at December 31, 2018 $ — Acquisitions (1) 137,823 Ending balance at December 31, 2019 $ 137,823 (1) 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 25—“Segment Reporting” of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report for additional information. During 2019, we completed our annual goodwill impairment test as of September 30, 2019. As a result, we determined there was no impairment as of December 31, 2019 . For more information on our annual impairment policies, see Note 2—“Summary of Significant Accounting Policies” of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report . Other Intangible Assets The components of net other intangible assets related to the acquisition of SVB Leerink were as follows: December 31, 2019 (Dollars in thousands) Gross Amount Accumulated Amortization Net Carrying Amount Other intangible assets: Customer relationships $ 42,000 $ 3,818 $ 38,182 Other 18,900 7,665 11,235 Total other intangible assets $ 60,900 $ 11,483 $ 49,417 For the year ended December 31, 2019 , we recorded amortization expense of $11.5 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 December 31, 2019 : Years ended December 31, (Dollars in thousands) Other Intangible Assets 2020 $ 5,382 2021 4,732 2022 4,732 2023 4,732 2024 4,732 2025 and thereafter 25,107 Total future amortization expense $ 49,417

Deposits

Deposits	12 Months Ended
Deposits	Dec. 31, 2019
Deposits [Abstract]
Deposits	Deposits The following table presents the composition of our deposits at December 31, 2019 and 2018 : December 31, (Dollars in thousands) 2019 2018 Noninterest-bearing demand $ 40,841,570 $ 39,103,422 Interest-bearing checking and savings accounts 568,256 648,468 Money market 17,749,736 7,498,205 Money market deposits in foreign offices 352,437 152,781 Sweep deposits in foreign offices 2,057,715 1,875,298 Time 188,093 50,726 Total deposits $ 61,757,807 $ 49,328,900 The aggregate amount of time deposit accounts individually equal to or greater than $250,000 totaled $180 million and $42 million at December 31, 2019 and 2018 , respectively. At December 31, 2019 , time deposit accounts individually equal to or greater than $250,000 totaling $177 million

Short-Term Borrowings and Long-

Short-Term Borrowings and Long-Term Debt	12 Months Ended
Short-Term Borrowings and Long-Term Debt	Dec. 31, 2019
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 December 31, 2019 and 2018 : Carrying Value (Dollars in thousands) Maturity Principal value at December 31, 2019 December 31, December 31, Short-term borrowings: Short-term FHLB advances $ — $ 300,000 Securities sold under agreement to repurchase (1) — 319,414 Other short-term borrowings (2) $ 17,430 17,430 11,998 Total short-term borrowings $ 17,430 $ 631,412 Long-term debt: 3.50% Senior Notes January 29, 2025 $ 350,000 $ 347,987 $ 347,639 5.375% Senior Notes — 348,826 Total long-term debt $ 347,987 $ 696,465 (1) Securities sold under repurchase agreements are effectively short-term borrowings collateralized by U.S. Treasury securities. (2) Represents cash collateral received from certain counterparties in relation to market value exposures of derivative contracts in our favor. The aggregate annual maturities of long-term debt obligations as of December 31, 2019 are as follows: Year ended December 31, (Dollars in thousands) Amount 2020 $ — 2021 — 2022 — 2023 — 2024 — 2025 and thereafter 347,987 Total $ 347,987 Interest expense related to short-term borrowings and long-term debt was $35.1 million , $46.6 million and $36.1 million in 2019 , 2018 and 2017 , respectively. For the year ended December 31, 2017, interest expense is net of the hedge accounting impact from our interest rate swap agreements related to our 6.05% Subordinated Notes. The weighted average interest rate associated with our short-term borrowings was 2.62 percent as of December 31, 2018 . There were no overnight short-term borrowings as of December 31, 2019. 3.50% Senior Notes In January 2015, SVB Financial issued $350 million of 3.50% Senior Notes due in January 2025. We received net proceeds of approximately $346.4 million after deducting underwriting discounts and commissions and issuance costs. The balance of our 3.50% Senior Notes at December 31, 2019 was $348.0 million , which is reflective of $1.8 million of debt issuance costs and a $0.2 million discount. 5.375% Senior Notes In September 2010, SVB Financial issued $350 million of 5.375% Senior Notes due in September 2020. We received net proceeds of $345 million after deducting underwriting discounts and commissions and other expenses. We used approximately $250 million of the net proceeds from the sale of the notes to meet obligations due on our 3.875% Convertible Notes, which matured in April 2011. The remaining net proceeds were used for general corporate purposes, including working capital. On December 20, 2019, we redeemed in full the outstanding aggregate principle amount of our $350 million 5.375% Senior Notes due 2020 at a redemption price of $358.4 million . The amount paid in excess of the principal amount of the 5.375% Senior Notes represented a $9.0 million premium due to holders upon early redemption and was recorded as a loss in other noninterest income. 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 December 31, 2019 , collateral pledged to the FHLB of San Francisco was comprised primarily of fixed income investment securities and loans and had a carrying value of $4.7 billion , of which $4.3 billion was available to support additional borrowings. As of December 31, 2019 , collateral pledged to the discount window at the FRB was comprised of fixed income investment securities and had a carrying value of $1.0 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 December 31, 2019 . Our total unused and available borrowing capacity under our master repurchase agreements with various financial institutions totaled $3.3 billion at December 31, 2019 .

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
Derivative Financial Instruments	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments We primarily use derivative financial instruments to manage interest rate risk, 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 December 31, 2019 , no derivatives classified as hedges were terminated or were disqualified for hedge accounting. The maximum length of time over which the forecasted transactions are hedged 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” of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report . 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 December 31, 2019 and 2018 were as follows: December 31, 2019 December 31, 2018 Notional or Contractual Amount Fair Value Notional or Contractual Amount 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 — — — 263,733 4,767 — Foreign exchange forwards 300,250 — 2,154 178,310 — 1,094 Other derivative instruments: Equity warrant assets 225,893 165,473 — 223,532 149,238 — Client foreign exchange forwards 4,661,517 114,546 — 2,759,878 93,876 — Client foreign exchange forwards 4,326,059 — 94,745 2,568,085 — 85,706 Client foreign currency options 154,985 1,308 — 93,556 1,759 — Client foreign currency options 154,985 — 1,308 93,579 — 1,759 Client interest rate derivatives (2) 1,275,190 28,811 — 1,020,416 8,499 — Client interest rate derivatives (2) 1,372,914 — 14,154 1,337,328 — 9,491 Total Derivatives not designated as hedging instruments 310,138 112,361 258,139 98,050 Total derivatives $ 332,814 $ 137,984 $ 258,139 $ 98,050 (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 $17.4 million of derivative liabilities and $0.4 million of derivative assets at December 31, 2019 and 2018 , 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 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) Statement of income location 2019 2018 2017 Derivatives designated as hedging instruments: Interest rate risks: Amounts reclassified from accumulated other comprehensive income into income Interest income—loans $ (5,358 ) $ — $ — Net cash benefit associated with interest rate swaps Interest expense—borrowings — — 1,053 Changes in fair value of interest rate swaps Other noninterest income — — (7 ) Net (losses) gains associated with interest rate risk derivatives $ (5,358 ) $ — $ 1,046 Derivatives not designated as hedging instruments: Currency exchange risks: Gains (losses) on revaluations of internal foreign currency instruments, net Other noninterest income $ 1,444 $ (373 ) $ 33,161 (Losses) gains on internal foreign exchange forward contracts, net Other noninterest income (1,853 ) 52 (32,286 ) Net (losses) gains associated with internal currency risk $ (409 ) $ (321 ) $ 875 Other derivative instruments: (Losses) gains on revaluations of client foreign currency instruments, net Other noninterest income $ (15,146 ) $ 4,998 $ 10,882 Gains (losses) on client foreign exchange forward contracts, net Other noninterest income 15,900 (4,011 ) (9,969 ) Net gains associated with client currency risk $ 754 $ 987 $ 913 Net gains on equity warrant assets Gains on equity warrant assets, net $ 138,078 $ 89,142 $ 54,555 Net losses on other derivatives Other noninterest income $ (1,190 ) $ (179 ) $ (564 ) 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 December 31, 2019 and 2018 : (Dollars in thousands) 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 Financial Instruments Cash Collateral Received (1) 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 December 31, 2018: Derivative Assets: Foreign exchange forwards $ 98,643 $ — $ 98,643 $ (38,213 ) $ (11,825 ) $ 48,605 Foreign currency options 1,759 — 1,759 (613 ) (90 ) 1,056 Client interest rate derivatives 8,499 — 8,499 (8,416 ) (83 ) — Total derivative assets: 108,901 — 108,901 (47,242 ) (11,998 ) 49,661 Reverse repurchase, securities borrowing, and similar arrangements 123,611 — 123,611 (123,611 ) — — Total $ 232,512 $ — $ 232,512 $ (170,853 ) $ (11,998 ) $ 49,661 (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 December 31, 2019 and 2018 : (Dollars in thousands) 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 Financial Instruments Cash Collateral Pledged (1) 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 December 31, 2018: Derivative Liabilities: Foreign exchange forwards $ 86,800 $ — $ 86,800 $ (24,778 ) $ (20,732 ) $ 41,290 Foreign currency options 1,759 — 1,759 (1,054 ) — 705 Client interest rate derivatives 9,491 — 9,491 — (9,207 ) 284 Total derivative liabilities: 98,050 — 98,050 (25,832 ) (29,939 ) 42,279 Repurchase, securities lending, and similar arrangements 319,414 — 319,414 — — 319,414 Total $ 417,464 $ — $ 417,464 $ (25,832 ) $ (29,939 ) $ 361,693 (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	12 Months Ended
Noninterest Income	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Noninterest Income	Noninterest Income On January 1, 2018, we adopted accounting standard ASU 2014-09, Revenue from Contracts with Customers and all the related amendments ("ASC 606" or "ASU 2014-09"). Results for the reporting periods ended December 31, 2019 and 2018 are presented under ASC 606, while prior period amounts are not adjusted and continue to be reported in accordance with our previous accounting methodology under ASC 605. A summary of noninterest income for the years ended December 31, 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Noninterest income: Gains on investment securities, net $ 134,670 $ 88,094 $ 64,603 Gains on equity warrant assets, net 138,078 89,142 54,555 Client investment fees 182,068 130,360 56,136 Foreign exchange fees 159,262 138,812 115,760 Credit card fees 118,719 94,072 76,543 Deposit service charges 89,200 76,097 58,715 Lending related fees 49,920 41,949 43,265 Letters of credit and standby letters of credit fees 42,669 34,600 28,544 Investment banking revenue 195,177 — — Commissions 56,346 — — Other 55,370 51,858 59,110 Total noninterest income $ 1,221,479 $ 744,984 $ 557,231 Gains on investment securities, net Net gains on investment securities include both gains and losses from our non-marketable and other equity securities, 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 investments in 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 (i.e., 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 the new revenue standard as it explicitly excludes noninterest income earned from our investment-related activities. A summary of gains and losses on investment securities for 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Gains on non-marketable and other equity securities, net $ 138,575 $ 88,834 $ 69,792 Losses on sales of available-for-sale debt securities, net (3,905 ) (740 ) (5,189 ) Total gains on investment securities, net $ 134,670 $ 88,094 $ 64,603 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 the new revenue standard as it explicitly excludes noninterest income earned from our derivative-related activities. A summary of net gains on equity warrant assets for 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Equity warrant assets: Gains on exercises, net $ 107,168 $ 58,186 $ 48,275 Terminations (3,502 ) (5,964 ) (4,422 ) Changes in fair value, net 34,412 36,920 10,702 Total net gains on equity warrant assets $ 138,078 $ 89,142 $ 54,555 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 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Client investment fees by type: Sweep money market fees $ 104,236 $ 75,654 $ 28,485 Asset management fees (1) 28,665 23,882 16,831 Repurchase agreement fees 49,167 30,824 10,820 Total client investment fees (2) $ 182,068 $ 130,360 $ 56,136 (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 which 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 are typically settled within two business days. Forward contract and option premium fees are recognized outside of the scope of the new revenue standard as it explicitly excludes noninterest income earned from our derivative-related activities. A summary of foreign exchange fee income by instrument type for 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Foreign exchange fees by instrument type: Spot contract commissions $ 145,915 $ 127,459 $ 104,344 Forward contract commissions 13,068 10,940 10,934 Option premium fees 279 413 482 Total foreign exchange fees $ 159,262 $ 138,812 $ 115,760 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 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Credit card fees by instrument type: Card interchange fees, net $ 93,553 $ 74,381 $ 60,224 Merchant service fees 18,355 14,420 11,584 Card service fees 6,811 5,271 4,735 Total credit card fees $ 118,719 $ 94,072 $ 76,543 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 the new revenue standard as it explicitly excludes noninterest income earned from our lending-related activities. A summary of lending related fees by instrument type for 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Lending related fees by instrument type: Unused commitment fees $ 34,829 $ 32,452 $ 34,110 Other 15,091 9,497 9,155 Total lending related fees $ 49,920 $ 41,949 $ 43,265 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 the new revenue standard as it explicitly excludes noninterest income earned from our lending related activities. Investment banking revenue We earn 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; we recognize the applicable management fee as well the underwriting fee, net of consideration payable to customers. Private placement fees are recognized 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. We have determined that we act 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 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Investment banking revenue: Underwriting fees $ 153,306 $ — $ — Advisory fees 37,846 — — Private placements and other 4,025 — — Total investment banking revenue $ 195,177 $ — $ — Commissions Commissions include commissions received from clients 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 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 the new revenue standard. Other service revenue primarily consists of dividend income on FHLB/FRB stock, correspondent bank rebate income, incentive fees related to carried interest, gains or losses on early debt redemption and other fee income. We recognize revenue when our performance obligations are met and record revenues on a daily/monthly basis, quarterly, semi-annually 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 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Other noninterest income by instrument type: Fund management fees $ 32,522 $ 23,016 $ 21,214 Net gains on revaluation of foreign currency instruments, net of foreign exchange forward contracts (1) 345 666 1,788 (Losses) gains on extinguishment of debt (8,960 ) — 2,731 Other service revenue 31,463 28,176 33,377 Total other noninterest income $ 55,370 $ 51,858 $ 59,110 (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 years ended December 31, 2019 and 2018 : (Dollars in thousands) Global Commercial Bank (2) SVB Private Bank SVB Capital (2) SVB Leerink (2) Other Income Total Revenue from contracts with customers: Client investment fees $ 180,152 $ 1,916 $ — $ — $ — $ 182,068 Spot contract commissions 144,930 510 — — 475 145,915 Card interchange fees, gross 154,197 — — — 756 154,953 Merchant service fees 18,355 — — — — 18,355 Deposit service charges 88,136 137 — — 927 89,200 Investment banking revenue — — — 195,177 — 195,177 Commissions — — — 56,346 — 56,346 Fund management fees — — 26,850 5,672 — 32,522 Correspondent bank rebates 6,415 — — — — 6,415 Total revenue from contracts with customers $ 592,185 $ 2,563 $ 26,850 $ 257,195 $ 2,158 $ 880,951 Revenues outside the scope of ASC 606 (1) 45,737 803 95,544 7,321 191,123 340,528 Total noninterest income $ 637,922 $ 3,366 $ 122,394 $ 264,516 $ 193,281 $ 1,221,479 (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." (Dollars in thousands) Global Commercial Bank (2) SVB Private Bank SVB Capital (2) Other Income Total Revenue from contracts with customers: Client investment fees (3) $ 128,834 $ 1,526 $ — $ — $ 130,360 Spot contract commissions 126,445 691 — 323 127,459 Card interchange fees, gross 134,074 — — 428 134,502 Merchant service fees 14,415 4 — 1 14,420 Deposit service charges 74,348 108 — 1,641 76,097 Fund management fees — — 23,016 — 23,016 Correspondent bank rebates 5,802 — — — 5,802 Total revenue from contracts with customers $ 483,918 $ 2,329 $ 23,016 $ 2,393 $ 511,656 Revenues outside the scope of ASC 606 (1) 36,384 (48 ) 78,165 118,827 233,328 Total noninterest income $ 520,302 $ 2,281 $ 101,181 $ 121,220 $ 744,984 (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." (3) For the year ended December 31, 2018, the amount of client investment fees previously reported as "Other Items" has been correctly allocated to the reportable segment "Global Commercial Bank" to properly reflect the source of such revenue. The correction of this immaterial error had no impact on the "Total" amount of client investment fees.

Other Noninterest Expense

Other Noninterest Expense	12 Months Ended
Other Noninterest Expense	Dec. 31, 2019
Other Income and Expenses [Abstract]
Other Noninterest Expense	Other Noninterest Expense A summary of other noninterest expense for 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Lending and other client related processing costs $ 28,491 $ 24,237 $ 23,768 Correspondent bank fees 14,503 13,713 12,976 Investment banking activities 13,733 — — Trade order execution costs 10,813 — — Data processing services 12,536 10,811 10,251 Telephone 9,861 9,404 10,647 Dues and publications 4,603 4,605 3,263 Postage and supplies 3,198 2,799 2,797 Other 54,841 21,682 21,419 Total other noninterest expense $ 152,579 $ 87,251 $ 85,121

Income Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We are subject to income tax in the U.S. federal jurisdiction and various state and foreign jurisdictions. The components of our provision for income taxes for 2019 , 2018 and 2017 were as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Current provision: Federal $ 296,400 $ 249,358 $ 263,231 State 132,357 123,264 67,046 Deferred (benefit) expense: Federal (1,530 ) (11,777 ) 24,654 State (1,542 ) (9,284 ) 532 Income tax expense $ 425,685 $ 351,561 $ 355,463 Our effective tax rate is calculated by dividing income tax expense by the sum of income before income tax expense and the net income attributable to noncontrolling interests. The reconciliation between the federal statutory income tax rate and our effective income tax rate for 2019 , 2018 and 2017 , is as follows: December 31, (Dollars in thousands) 2019 2018 2017 Federal statutory income tax rate 21.0 % 21.0 % 35.0 % State income taxes, net of the federal tax effect 7.0 7.2 5.8 Net deferred tax assets revaluation (TCJ Act) — — 4.3 Meals and entertainment 0.4 0.3 0.3 Disallowed officers' compensation 0.2 0.2 0.1 FDIC premiums 0.2 0.5 — Share-based compensation expense on incentive stock options and ESPP (0.6 ) (1.4 ) (2.1 ) Qualified affordable housing project tax credits (0.3 ) (0.3 ) (0.4 ) Tax-exempt interest income (0.6 ) (0.6 ) (0.3 ) Other, net (0.1 ) (0.4 ) (0.7 ) Effective income tax rate 27.2 % 26.5 % 42.0 % Deferred tax assets and liabilities at December 31, 2019 and 2018 , consisted of the following: December 31, (Dollars in thousands) 2019 2018 Deferred tax assets: Allowance for loan losses $ 103,267 $ 93,580 Net unrealized losses on AFS debt securities — 19,704 Share-based compensation expense 14,233 10,642 State income taxes 16,097 13,854 Accrued compensation 22,578 8,291 Deferred rent — 7,940 Lease liability 60,635 — Other accruals 12,383 7,061 Net operating loss 6,386 2,447 Goodwill and intangibles 3,141 — Other 7,923 11,339 Deferred tax assets 246,643 174,858 Valuation allowance (5,919 ) (2,107 ) Net deferred tax assets after valuation allowance 240,724 172,751 Deferred tax liabilities: Derivative equity warrant assets (45,533 ) (32,861 ) Change in accounting method (section 481(a)) (1,841 ) (8,034 ) Net unrealized gains on AFS debt securities (33,480 ) — Non-marketable and other equity securities (54,239 ) (45,759 ) Premises and equipment and other intangibles (16,459 ) (10,284 ) Right-of-use asset and deferred rent assets (50,493 ) — Other (10,246 ) (10,380 ) Deferred tax liabilities (212,291 ) (107,318 ) Net deferred tax assets $ 28,433 $ 65,433 Net Deferred Tax Assets U.S. federal net operating loss carryforwards totaled $2.2 million for both December 31, 2019 and 2018 . Our foreign net operating loss carryforwards totaled $20.8 million and $7.6 million at December 31, 2019 and 2018 , respectively. These net operating loss carryforwards expire at various dates beginning in 2022. Currently, we believe that it is more likely than not that the benefit from the foreign net operating loss carryforwards, which are associated with our Germany and Canada operations, will not be realized in the near term due to uncertainties in the timing of future profitability in the course of business. In recognition of this, our valuation allowance is $5.9 million on the deferred tax assets related to our German and Canadian net operating loss carryforwards as of December 31, 2019 . We believe it is more likely than not that the remaining deferred tax assets will be realized through recovery of taxes previously paid and/or future taxable income. Therefore, no valuation allowance was provided for the remaining deferred tax assets. We are subject to income tax in the U.S. federal jurisdiction and various state and foreign jurisdictions and have identified our federal and California tax returns as major tax filings. Our U.S. federal tax returns for 2016 and subsequent years remain open to full examination. Our California tax returns for 2015 and subsequent tax years remain open to full examination. At December 31, 2019 , our unrecognized tax benefit was $12.6 million , the recognition of which would reduce our income tax expense by $9.9 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 years ended December 31, 2019 , 2018 and 2017 . A summary of changes in our unrecognized tax benefit (including interest and penalties) for December 31, 2019 , 2018 and 2017 is as follows: (Dollars in thousands) Reconciliation of Unrecognized Tax Benefit Interest and Penalties Total Balance at December 31, 2016 $ 5,269 $ 442 $ 5,711 Additions for tax positions for current year 3,141 — 3,141 Additions for tax positions for prior years 3,378 754 4,132 Reduction for tax positions for prior years (223 ) (1 ) (224 ) Lapse of the applicable statute of limitations (60 ) (17 ) (77 ) Balance at December 31, 2017 $ 11,505 $ 1,178 $ 12,683 Additions for tax positions for current year 4,171 — 4,171 Additions for tax positions for prior years 631 823 1,454 Reduction for tax positions for prior years (1,865 ) (243 ) (2,108 ) Lapse of the applicable statute of limitations (435 ) (86 ) (521 ) Reduction as a result of settlement (1,318 ) (222 ) (1,540 ) Balance at December 31, 2018 $ 12,689 $ 1,450 $ 14,139 Additions for tax positions for current year 3,712 — 3,712 Additions for tax positions for prior years 63 826 889 Reduction for tax positions for prior years (884 ) (524 ) (1,408 ) Lapse of the applicable statute of limitations (1,826 ) (569 ) (2,395 ) Reduction as a result of settlement (1,142 ) $ (17 ) $ (1,159 ) Balance at December 31, 2019 $ 12,612 $ 1,166 $ 13,778

Employee Compensation and Benef

Employee Compensation and Benefit Plans	12 Months Ended
Employee Compensation and Benefit Plans	Dec. 31, 2019
Retirement Benefits [Abstract]
Employee Compensation and Benefit Plans	Employee Compensation and Benefit Plans Our employee compensation and benefit plans include: (i) Incentive Compensation Plan; (ii) Direct Drive Incentive Compensation Plan; (iii) Retention Program; (iv) Warrant Incentive Plan; (v) Deferred Compensation Plan; (vi) 401(k) and ESOP; (vii) SVB Leerink Incentive Compensation Plan; (viii) SVB Leerink Retention Award; (ix) EHOP; (x) 2006 Incentive Plan; and (xi) ESPP. The 2006 Incentive Plan and the ESPP are described in Note 5—“Share-Based Compensation” of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report . A summary of expenses incurred under certain employee compensation and benefit plans for 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Incentive Compensation Plan $ 143,888 $ 160,293 $ 125,584 Direct Drive Incentive Compensation Plan 37,315 40,578 18,721 Retention Program 2,438 1,438 1,317 Warrant Incentive Plan 14,881 9,112 15,386 Deferred Compensation Plan — — 203 SVBFG 401(k) Plan 25,687 21,323 17,860 SVBFG ESOP 4,197 6,435 4,719 SVB Leerink Incentive Compensation Plan 106,871 — — SVB Leerink Retention Award 12,015 — — Incentive Compensation Plan Our Incentive Compensation Plan (“ICP”) is an annual cash incentive plan that rewards performance based on our financial results and other performance criteria. Awards are made based on company performance, the employee's target bonus level and management's assessment of individual employee performance. Direct Drive Incentive Compensation Plan The Direct Drive Incentive Compensation Plan (“Direct Drive”) is an annual sales cash incentive program. Awards are based on sales teams' performance as to predetermined financial targets and other company/individual performance criteria. Actual awards for each sales team member under Direct Drive are based on: (i) the actual results and financial performance with respect to the incentive gross profit targets; (ii) the sales team payout targets; and (iii) the sales team member's sales position and team payout allocation. Retention Program The Retention Program (“RP”) is a long-term incentive plan that allows designated employees to share directly in our investment success. Plan participants were granted an interest in the distributions of gains from certain designated investments made by us during the applicable year. Specifically, participants share in: (i) returns from designated investments made by us, including investments in certain venture capital and private equity funds, debt funds and direct equity investments in companies; (ii) net income realized from the exercise of, and the subsequent sale of shares obtained through the exercise of, warrants held by us; and (iii) other designated amounts as determined by us. Since 2009, no new participants have been added and no new investments have been designated to the plan. Warrant Incentive Plan The Warrant Incentive Plan provides individual and team awards to those employees who negotiate warrants on our behalf. Designated participants, as determined by the Company, share in the cash proceeds received by the Company from the exercise of equity warrant assets. Deferred Compensation Plan Under the Deferred Compensation Plan (the “DC Plan”), eligible employees may elect to defer up to 50 percent of their base salary and/or up to 100 percent of any eligible bonus payment earned during the plan year. Any amounts deferred under the DC Plan will be invested and administered by us (or such person we designate). We generally do not match employee deferrals to the DC Plan. From time to time, we may also offer deferred special retention incentives and employer contributions under this plan to key plan participants. The deferred incentives and employer contributions are eligible for investment in the DC Plan during the retention qualifying period or vesting period. Voluntary deferrals under the DC Plan were $6.9 million in 2019 and $5.5 million in both 2018 and 2017 . The DC Plan overall, had investment gains of $6.9 million , losses of $1.7 million and gains of $4.7 million in 2019 , 2018 and 2017 , respectively. 401(k) and ESOP The 401(k) Plan and ESOP, collectively referred to as the “Plan”, is a combined 401(k) tax-deferred savings plan and employee stock ownership plan in which all regular U.S. employees are eligible to participate. Employees participating in the 401(k) Plan are allowed to contribute up to 75 percent of their pre-tax pay as defined in the Plan, up to the maximum annual amount allowable under federal income tax regulations of $19,000 for 2019, $18,500 for 2018 and $18,000 for 2017. We match the employee's contributions dollar-for-dollar, up to five percent of the employee's pre-tax pay as defined in the Plan. Our matching contributions vest immediately. The amount of salary deferred, up to the allowed maximum, is not subject to federal or state income taxes at the time of deferral. Discretionary ESOP contributions, based on our company performance, are made by us to all eligible individuals employed by us on the last day of the fiscal year. We may elect to contribute cash or our common stock (or a combination of cash and stock), in an amount not exceeding ten percent of the employee's eligible pay earned in the fiscal year. The ESOP contributions vest in equal annual increments over a participant's first five years of service (thereafter, all subsequent ESOP contributions are fully vested). SVB Leerink Incentive Compensation Plan Our SVB Leerink Incentive Compensation Plan is an annual cash incentive plan that rewards performance of SVB Leerink employees based on SVB Leerink's financial results. This plan requires employees who exceed certain compensation levels to defer a portion of their compensation, of which, 25% will be settled in the form of restricted stock awards and 75% will be settled in the form of cash. The deferred compensation vests over a period of up to five years . SVB Leerink Retention Award The SVB Leerink Retention Award is an incentive award that granted designated SVB Leerink employees restricted stock awards and cash after the close of the acquisition of SVB Leerink in January 2019. The aggregate amount of the awards was $60 million , of which 50% will be settled in the form of cash and 50% in the form of restricted stock awards. The awards vest in equal annual increments over five years . EHOP Program The EHOP is a benefit plan that provides for the issuance of mortgage loans at discounted interest rates to eligible employees. Eligible employees may apply for either an adjustable rate mortgage (ARM) or a fixed rate loan for their primary residence. The ARM is a 30 year loan and has an initial fixed interest rate for five , seven or ten years after which a floating rate will be set annually. The fixed rate loan program offers a 15 or 30 years loan and the interest rate is fixed for the life of the loan. Applicants must qualify for a loan through the normal mortgage review and approval process, which is typical of industry standards. The maximum loan amount generally cannot be greater than 85 percent of the lesser of the purchase price or the appraised value. The interest rate on the fixed-rate loan is written at a discount to SVB Private Bank client mortgage rates and determined at SVB's discretion. Floating rates applied at the end of the fixed-rate period will be reset annually at 12 month LIBOR plus two and one quarter percent. For additional details, see Note 10—“Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments” of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report

Related Parties

Related Parties	12 Months Ended
Related Parties	Dec. 31, 2019
Related Party Transactions [Abstract]
Related Parties	Related Parties We 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 also provide real estate secured loans to eligible employees through our EHOP. For additional details, see Note 20—“Employee Compensation and Benefit Plans” of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report .

Off-Balance Sheet Arrangements,

Off-Balance Sheet Arrangements, Guarantees and Other Commitments	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [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 A commitment to extend credit is a formal agreement to lend funds to a client as long as there is no violation of any condition established in the agreement. Such commitments generally have fixed expiration dates, or other termination clauses, and usually require a fee paid by the client upon us issuing the commitment. The following table summarizes information related to our commitments to extend credit at December 31, 2019 and 2018 , respectively: December 31, (Dollars in thousands) 2019 2018 Loan commitments available for funding: (1) Fixed interest rate commitments $ 2,434,042 $ 1,839,190 Variable interest rate commitments 19,309,317 14,821,815 Total loan commitments available for funding 21,743,359 16,661,005 Commercial and standby letters of credit (2) 2,778,561 2,252,016 Total unfunded credit commitments $ 24,521,920 $ 18,913,021 Commitments unavailable for funding (3) $ 3,051,075 $ 2,723,835 Allowance for unfunded credit commitments (4) 67,656 55,183 (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 unfunded credit commitments includes an allowance for both our unfunded loan commitments and our letters of credit. Our potential exposure to credit loss for commitments to extend credit, in the event of nonperformance by the other party to the financial instrument, is the contractual amount of the available unused loan commitment. We use the same credit approval and monitoring process in extending credit commitments as we do in making loans. The actual liquidity needs and the credit risk that we have experienced have historically been lower than the contractual amount of commitments to extend credit because a significant portion of these commitments expire without being drawn upon. We evaluate each potential borrower and the necessary collateral on an individual basis. The type of collateral varies, but may include real property, intellectual property, bank deposits or business and personal assets. The credit risk associated with these commitments is considered in the allowance for unfunded credit commitments. Commercial and Standby Letters of Credit 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. Commercial letters of credit are issued primarily for inventory purchases by a client and are typically short-term in nature. We provide two types of standby letters of credit: performance and financial standby letters of credit. Performance standby letters of credit are issued to guarantee the performance of a client to a third party when certain specified future events have occurred and are primarily used to support performance instruments such as bid bonds, performance bonds, lease obligations, repayment of loans and past due notices. Financial standby letters of credit are conditional commitments issued by us to guarantee the payment by a client to a third party (beneficiary) and are primarily used to support many types of domestic and international payments. These standby letters of credit have fixed expiration dates and generally require a fee to be paid by the client at the time we issue the commitment. The credit risk involved in issuing letters of credit is essentially the same as that involved with extending credit commitments to clients, and accordingly, we use a credit evaluation process and collateral requirements similar to those for credit commitments. Our standby letters of credit often are cash secured by our clients. The actual liquidity needs and the credit risk that we have experienced historically have been lower than the contractual amount of letters of credit issued because a significant portion of these conditional commitments expire without being drawn upon. The table below summarizes our commercial and standby letters of credit at December 31, 2019 . 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 Year or Less Expires After One Year Total Amount Outstanding Maximum Amount of Future Payments Financial standby letters of credit $ 2,566,623 $ 79,207 $ 2,645,830 $ 2,645,830 Performance standby letters of credit 105,993 19,618 125,611 125,611 Commercial letters of credit 7,120 — 7,120 7,120 Total $ 2,679,736 $ 98,825 $ 2,778,561 $ 2,778,561 Deferred fees related to financial and performance standby letters of credit were $17.2 million at December 31, 2019 and $14.1 million at December 31, 2018 . At December 31, 2019 , collateral in the form of cash of $1.6 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 makes 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 December 31, 2019 : (Dollars in thousands) SVBFG Capital Commitments SVBFG Unfunded Commitments SVBFG Ownership of each Fund (3) 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) 21,801 5,732 Various Debt funds (equity method accounting) 58,493 — Various Other fund investments (2) 284,758 6,119 Various Total $ 467,664 $ 19,092 (1) Our ownership includes direct ownership of 1.3 percent and indirect ownership of 3.8 percent through our investment in Strategic Investors Fund II, LP. (2) Represents commitments to 211 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 or limits us from sponsoring or having ownership interests in “covered” funds including venture capital and private equity funds. See “Business - Supervision and Regulation” under Part I, Item 1 of this report. 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 December 31, 2019 : (Dollars in thousands) Unfunded Commitments Strategic Investors Fund, LP $ 1,338 Capital Preferred Return Fund, LP 1,540 Growth Partners, LP 2,468 Total $ 5,346

Fair Value of Financial Instrum

Fair Value of Financial Instruments	12 Months Ended
Fair Value of Financial Instruments	Dec. 31, 2019
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 consolidated financial statements. We disclose our method and approach for fair value measurements of assets and liabilities in Note 2—“Summary of Significant Accounting Policies” of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report . 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 — f ixed 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 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, 2018 : (Dollars in thousands) Level 1 Level 2 Level 3 Balance at December 31, 2018 Assets Available-for-sale securities: U.S. Treasury securities $ 4,738,258 $ — $ — $ 4,738,258 U.S. agency debentures — 1,084,117 — 1,084,117 Foreign government debt securities 5,812 — — 5,812 Residential mortgage-backed securities: Agency-issued collateralized mortgage obligations— fixed rate — 1,880,218 — 1,880,218 Agency-issued collateralized mortgage obligations— variable rate — 81,638 — 81,638 Total available-for-sale securities 4,744,070 3,045,973 — 7,790,043 Non-marketable and other equity securities (fair value accounting): Non-marketable securities: Venture capital and private equity fund investments measured at net asset value — — — 318,352 Venture capital and private equity fund investments not measured at net asset value (1) — — 1,079 1,079 Other equity securities in public companies (1) 1,181 19,217 — 20,398 Total non-marketable and other equity securities (fair value accounting) 1,181 19,217 1,079 339,829 Other assets: Foreign exchange forward and option contracts — 100,402 — 100,402 Equity warrant assets — 4,039 145,199 149,238 Client interest rate derivatives — 8,499 — 8,499 Total assets $ 4,745,251 $ 3,178,130 $ 146,278 $ 8,388,011 Liabilities Foreign exchange forward and option contracts $ — $ 88,559 $ — $ 88,559 Client interest rate derivatives — 9,491 — 9,491 Total liabilities $ — $ 98,050 $ — $ 98,050 (1) Included in Level 3 assets is $964 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 2019 , 2018 and 2017 , respectively: (Dollars in thousands) Beginning Balance Total Realized and Unrealized Gains, net Included in Income Purchases Sales/Exits Issuances Distributions and Other Settlements Transfers Out of Level 3 Ending Balance Year ended December 31, 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) 145,199 133,910 575 (130,392 ) 16,453 — (4,707 ) 161,038 Total assets $ 146,278 $ 133,922 $ 575 $ (131,352 ) $ 16,453 $ 3 $ (4,707 ) $ 161,172 Year ended December 31, 2018: Non-marketable and other equity securities (fair value accounting): Venture capital and private equity fund investments not measured at net asset value (1) $ 919 $ 457 $ — $ — $ — $ (297 ) $ — $ 1,079 Other assets: Equity warrant assets (2) 121,331 87,982 — (78,752 ) 17,941 — (3,303 ) 145,199 Total assets $ 122,250 $ 88,439 $ — $ (78,752 ) $ 17,941 $ (297 ) $ (3,303 ) $ 146,278 Year ended December 31, 2017: Non-marketable and other equity securities (fair value accounting): Venture capital and private equity fund investments not measured at net asset value (1) $ 2,040 $ 971 $ — $ (2,092 ) $ — $ — $ — $ 919 Other assets: Equity warrant assets (2) 128,813 54,263 — (74,769 ) 14,537 — (1,513 ) 121,331 Total assets $ 130,853 $ 55,234 $ — $ (76,861 ) $ 14,537 $ — $ (1,513 ) $ 122,250 (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 unrealized gains (losses) included in earnings (which is inclusive of noncontrolling interest) attributable to Level 3 assets still held at December 31, 2019 and 2018 , respectively: Year ended December 31, (Dollars in thousands) 2019 2018 Non-marketable and other equity securities (fair value accounting): Venture capital and private equity fund investments not measured at net asset value (1) $ (222 ) $ 160 Other assets: Equity warrant assets (2) 34,691 37,564 Total unrealized gains, net $ 34,469 $ 37,724 Unrealized (losses) gains attributable to noncontrolling interests (1) $ (199 ) $ 143 (1) Unrealized gains are recorded in the line item “Gains on investment securities, net,” a component of noninterest income. (2) Unrealized gains 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 December 31, 2019 and 2018 . 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 Weighted Average December 31, 2019: Venture capital and private equity fund investments (fair value accounting) $ 134 Private company equity pricing (1) (1) Equity warrant assets (public portfolio) 346 Black-Scholes option pricing model Volatility 50.7 % Risk-Free interest rate 1.9 Sales restrictions discount (2) 13.6 Equity warrant assets (private portfolio) 160,692 Black-Scholes option pricing model Volatility 38.2 Risk-Free interest rate 1.6 Marketability discount (3) 17.5 Remaining life assumption (4) 45.0 December 31, 2018: Venture capital and private equity fund investments (fair value accounting) $ 1,079 Private company equity pricing (1) (1) Equity warrant assets (public portfolio) 2,757 Black-Scholes option pricing model Volatility 54.7 % Risk-Free interest rate 2.6 Sales restrictions discount (2) 18.5 Equity warrant assets (private portfolio) 142,442 Black-Scholes option pricing model Volatility 38.5 Risk-Free interest rate 2.5 Marketability discount (3) 17.7 Remaining life assumption (4) 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 to six months . (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 December 31, 2019 , the weighted average contractual remaining term was 6.1 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. During 2019 , 2018 and 2017 , we did not have any transfers between Level 2 and Level 1 or transfers between Level 3 and Level 1. All other transfers from Level 3 to Level 2 during 2019 , 2018 and 2017 were due to the transfer of equity warrant assets from our private portfolio to our public portfolio (see our Level 3 reconciliation above). All amounts reported as transfers represent the fair value as of the date of the change in circumstances that caused the transfer. 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 December 31, 2019 and 2018 : Estimated Fair Value (Dollars in thousands) Carrying Amount Total Level 1 Level 2 Level 3 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 December 31, 2018: Financial assets: Cash and cash equivalents $ 3,571,539 $ 3,571,539 $ 3,571,539 $ — $ — Held-to-maturity securities 15,487,442 15,188,236 — 15,188,236 — Non-marketable securities not measured at net asset value 131,453 131,453 — — 131,453 Non-marketable securities measured at net asset value 151,247 151,247 — — — Net commercial loans 25,043,671 25,463,968 — — 25,463,968 Net consumer loans 3,013,706 3,064,093 — — 3,064,093 FHLB and Federal Reserve Bank stock 58,878 58,878 — — 58,878 Financial liabilities: Short-term borrowings 631,412 631,412 — 631,412 — Non-maturity deposits (1) 49,278,174 49,278,174 49,278,174 — — Time deposits 50,726 50,337 — 50,337 — 3.50% Senior Notes 347,639 336,088 — 336,088 — 5.375% Senior Notes 348,826 361,281 — 361,281 — Off-balance sheet financial assets: Commitments to extend credit — 22,930 — — 22,930 (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 IPOs 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 September 30 th , for our December 31 st 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 December 31, 2019 : (Dollars in thousands) Carrying Amount Fair Value Unfunded Commitments Non-marketable securities (fair value accounting): Venture capital and private equity fund investments (1) $ 265,263 $ 265,263 $ 10,579 Non-marketable securities (equity method accounting): Venture capital and private equity fund investments (2) 215,367 215,367 10,675 Debt funds (2) 7,271 7,271 — Other investments (2) 12,713 12,713 886 Total $ 500,614 $ 500,614 $ 22,140 (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 $64.6 million and $4.0 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.

Regulatory Matters

Regulatory Matters	12 Months Ended
Regulatory Matters	Dec. 31, 2019
Banking and Thrift [Abstract]
Regulatory Matters	Regulatory Matters SVB Financial and the Bank are subject to various regulatory capital adequacy requirements administered by the Federal Reserve Board and the DBO. The Federal Deposit Insurance Corporation Improvement Act of 1991 required that the federal regulatory agencies adopt regulations defining five capital categories for banks: well-capitalized, adequately capitalized, undercapitalized, significantly undercapitalized and critically undercapitalized. In July 2013, the Federal Reserve, the FDIC and the Office of the Comptroller of the Currency published final rules establishing a comprehensive capital framework for U.S. banking organizations (the “Capital Rules”), which implement the Basel III regulatory capital reforms and changes required by the Dodd-Frank Act. “Basel III” refers to the internationally agreed regulatory capital framework adopted by the Basel Committee. There are three categories of capital under the new Basel III standards; CET 1, additional Tier 1 and Tier 2. CET 1 includes common stock plus related surplus and retained earnings, less certain deductions. Additional Tier 1 capital includes qualifying preferred stock and trust preferred securities, less certain deductions. Additional Tier 1, together with CET 1, equal total Tier 1 capital. Tier 2 capital includes primarily certain qualifying unsecured subordinated debt and qualifying allowances for loan and lease losses. Tier 1 capital together with Tier 2 capital equal total capital. Under the Capital Rules, the minimum capital ratios applicable to SVB Financial and the Bank are as follows: 4.5% CET1 capital, 6.0% Tier 1 capital, 8.0% Total capital and 4.0% Tier 1 leverage. In addition, banking organizations must meet a 2.5% CET1 risk-based capital conservation buffer requirement in order to avoid constraints on capital distributions, such as dividends and equity repurchases, and certain bonus compensation for executive officers. The severity of the constraints would depend on the amount of the shortfall and the banking organization’s “eligible retained income” (that is, four-quarter trailing net income, net of distributions and tax effects not reflected in net income). As of December 31, 2019 , both SVB Financial and the Bank exceed the required ratios under the Capital Rules and were considered “well-capitalized” for regulatory purposes under existing capital guidelines as well. The following table presents the capital ratios for the Company and the Bank under federal regulatory guidelines, compared to the minimum regulatory capital requirements, as of December 31, 2019 and 2018 : Capital Ratios Capital Amounts (Dollars in thousands) Actual Required Minimum (1) Well Capitalized Minimum Actual Required Minimum (1) Well Capitalized Minimum December 31, 2019: CET 1 risk-based capital: SVB Financial 12.58 % 7.0 % N/A $ 5,857,744 $ 3,260,424 N/A Bank 11.12 7.0 6.5 4,949,393 3,115,151 $ 2,892,640 Tier 1 risk-based capital: SVB Financial 13.43 8.5 6.0 6,257,442 3,959,086 2,794,649 Bank 11.12 8.5 8.0 4,949,393 3,782,683 3,560,172 Total risk-based capital: SVB Financial 14.23 10.5 10.0 6,630,022 4,890,636 4,657,748 Bank 11.96 10.5 10.0 5,321,850 4,672,726 4,450,215 Tier 1 leverage: SVB Financial 9.06 4.0 N/A 6,257,442 2,763,146 N/A Bank 7.30 4.0 5.0 4,949,393 2,713,367 3,391,709 December 31, 2018: CET 1 risk-based capital: SVB Financial 13.41 % 6.4 % N/A $ 5,167,270 $ 2,456,151 N/A Bank 12.41 6.4 6.5 4,604,689 2,365,385 $ 2,411,765 Tier 1 risk-based capital: SVB Financial 13.58 7.9 6.0 5,231,476 3,034,068 2,311,671 Bank 12.41 7.9 8.0 4,604,689 2,921,946 2,968,326 Total risk-based capital: SVB Financial 14.45 9.9 10.0 5,567,562 3,804,625 3,852,785 Bank 13.32 9.9 10.0 4,940,776 3,664,028 3,710,408 Tier 1 leverage: SVB Financial 9.06 4.0 N/A 5,231,476 2,308,592 N/A Bank 8.10 4.0 5.0 4,604,689 2,272,912 2,841,139 N/A "Well-Capitalized Minimum" CET 1 risk-based capital and Tier 1 leverage ratios are not formally defined under applicable banking regulations for bank holding companies. (1) The percentages as of December 31,2019 represent the minimum capital ratios plus, the fully phased-in 2.5% CET1 capital conservation buffer under the Capital Rules.

Segment Reporting

Segment Reporting	12 Months Ended
Segment Reporting	Dec. 31, 2019
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. SVB Leerink is a new reportable segment and was created as a result of the acquisition of Leerink Holdings LLC effective January 4, 2019. 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 an earnings credit is given for deposits raised, and an earnings 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 (for further description of these reportable segments, refer to "Business–Business Overview" under Part I, Item 1 of this report): • 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 primarily in the technology, life science/healthcare and private equity/venture capital industries. The Bank provides solutions to the financial needs of commercial clients through credit, treasury management, foreign exchange, trade finance and other services. We broadly serve clients within the U.S., as well as non-U.S. clients in key international innovation markets. 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 Funds 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 stock purchase loans, capital call lines of credit and other secured and unsecured lending products, as well as cash and wealth management services. • SVB Capital is the funds management business of SVBFG, 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 results. Our segment information for 2019 , 2018 and 2017 is as follows: (Dollars in thousands) Global Commercial Bank (1) SVB Private Bank SVB Capital (1) SVB Leerink (1) Other Items (2) Total Year ended December 31, 2019 Net interest income $ 1,850,391 $ 51,022 $ 38 $ 1,252 $ 193,898 $ 2,096,601 Provision for credit losses (91,814 ) (2,369 ) — — (12,233 ) (106,416 ) Noninterest income 637,922 3,366 122,394 264,516 193,281 1,221,479 Noninterest expense (3) (874,854 ) (40,151 ) (30,798 ) (252,678 ) (402,781 ) (1,601,262 ) Income (loss) before income tax expense (4) $ 1,521,645 $ 11,868 $ 91,634 $ 13,090 $ (27,835 ) $ 1,610,402 Total average loans, net of unearned income $ 26,031,284 $ 3,341,188 $ — $ — $ 543,735 $ 29,916,207 Total average assets (5) (6) 56,043,321 3,371,052 405,152 397,650 2,994,455 63,211,630 Total average deposits 53,053,665 1,524,232 — — 479,053 55,056,950 Year ended December 31, 2018 Net interest income $ 1,623,488 $ 64,902 $ 23 $ — $ 205,575 $ 1,893,988 Provision for credit losses (80,953 ) (3,339 ) — — (3,578 ) (87,870 ) Noninterest income (7) 520,302 2,281 101,181 — 121,220 744,984 Noninterest expense (3) (793,159 ) (25,064 ) (22,792 ) — (347,178 ) (1,188,193 ) Income (loss) before income tax expense (4) $ 1,269,678 $ 38,780 $ 78,412 $ — $ (23,961 ) $ 1,362,909 Total average loans, net of unearned income $ 22,354,305 $ 2,850,271 $ — $ — $ 425,944 $ 25,630,520 Total average assets (5) (8) 48,854,416 2,871,743 380,543 — 3,122,358 55,229,060 Total average deposits 46,039,570 1,502,308 — — 533,466 48,075,344 Year ended December 31, 2017 Net interest income $ 1,274,366 $ 58,131 $ 48 $ — $ 87,824 $ 1,420,369 Provision for credit losses (81,553 ) (4,386 ) — — (6,365 ) (92,304 ) Noninterest income (7) 392,101 2,175 58,992 — 103,963 557,231 Noninterest expense (3) (707,666 ) (17,693 ) (19,340 ) — (265,956 ) (1,010,655 ) Income (loss) before income tax expense (4) $ 877,248 $ 38,227 $ 39,700 $ — $ (80,534 ) $ 874,641 Total average loans, net of unearned income $ 18,479,793 $ 2,423,078 $ — $ — $ 256,523 $ 21,159,394 Total average assets (5) (8) 43,704,667 2,445,220 325,939 — 1,904,446 48,380,272 Total average deposits 41,043,731 1,303,542 — — 397,875 42,745,148 (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 on equity warrant assets and gains or losses on the sale of fixed income investments and 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 $20.4 million , $21.8 million and $25.3 million for 2019 , 2018 and 2017 , respectively. (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. (6) Included in the total average assets for SVB Leerink is goodwill of $137.8 million for the year ended December 31, 2019 related to the acquisition effective January 4, 2019. (7) For the years ended December 31, 2018 and 2017, amounts of client investment fees included in the line item "Noninterest Income" previously reported as "Other Items" have been correctly allocated to our reportable segment "Global Commercial Bank" to properly reflect the source of such revenue. The correction of this immaterial error had no impact on the "Total" amount of noninterest income. (8) For the years ended December 31, 2018 and 2017, amounts for average assets previously reported as "Other Items" have been correctly allocated to the reportable segments "Global Commercial Bank" and “SVB Private Bank” to properly reflect the greater of total average assets or the sum of total average liabilities and total average stockholders’ equity for “Global Commercial Bank” and “SVB Private Bank.” The correction of this immaterial error had no impact on the "Total" amount of average assets.

Parent Company Only Condensed F

Parent Company Only Condensed Financial Information	12 Months Ended
Parent Company Only Condensed Financial Information	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
Parent Company Only Condensed Financial Information	Parent Company Only Condensed Financial Information The condensed balance sheets of SVB Financial at December 31, 2019 and 2018 , and the related condensed statements of income, comprehensive income and cash flows for 2019 , 2018 and 2017 , are presented below: Condensed Balance Sheets December 31, (Dollars in thousands) 2019 2018 Assets: Cash and cash equivalents $ 800,926 $ 553,049 Investment securities 474,842 510,836 Loans, net of unearned income 15,245 — Lease right-of-use assets 71,847 — Other assets 214,167 204,301 Investment in subsidiaries: Bank subsidiary 5,034,095 4,554,813 Nonbank subsidiaries 432,073 116,968 Total assets $ 7,043,195 $ 5,939,967 Liabilities and SVBFG stockholders’ equity: 3.50% Senior Notes $ 347,987 $ 347,639 5.375% Senior Notes — 348,826 Lease liabilities 87,999 — Other liabilities 136,903 127,293 Total liabilities $ 572,889 $ 823,758 SVBFG stockholders’ equity 6,470,306 5,116,209 Total liabilities and SVBFG stockholders’ equity $ 7,043,195 $ 5,939,967 Condensed Statements of Income Year ended December 31, (Dollars in thousands) 2019 2018 2017 Interest income $ 4,473 $ 3,307 $ 2,077 Interest expense (31,666 ) (32,037 ) (34,932 ) Dividend income from bank subsidiary 733,000 140,000 90,000 Gains on equity warrant assets, net 138,078 89,142 54,555 Gains on investment securities, net 45,345 13,546 37,132 Fund management fees and other noninterest income 21,567 26,388 24,613 General and administrative expenses (94,712 ) (70,976 ) (63,077 ) Income tax (expense) benefit (40,218 ) (14,383 ) 10,367 Income before net income of subsidiaries 775,867 154,987 120,735 Equity in undistributed net income of bank subsidiary 303,618 793,641 356,769 Equity in undistributed net income of nonbank subsidiaries 57,371 25,212 13,002 Net income available to common stockholders $ 1,136,856 $ 973,840 $ 490,506 Condensed Statements of Comprehensive Income Year ended December 31, (Dollars in thousands) 2019 2018 2017 Net income available to common stockholders $ 1,136,856 $ 973,840 $ 490,506 Other comprehensive income (loss), net of tax: Foreign currency translation gains (losses) 2,319 (4,107 ) 3,769 Changes in fair value on cash flow hedges (2,130 ) — — Changes in unrealized holding gains and losses on AFS securities 2,310 120 22,285 Equity in other comprehensive income (loss) of bank and nonbank subsidiaries 136,066 (19,171 ) (50,956 ) Reclassifications to retained earnings for the adoption of new accounting guidance — (29,490 ) — Other comprehensive income (loss), net of tax 138,565 (52,648 ) (24,902 ) Total comprehensive income $ 1,275,421 $ 921,192 $ 465,604 Condensed Statements of Cash Flows Year ended December 31, (Dollars in thousands) 2019 2018 2017 Cash flows from operating activities: Net income available to common stockholders $ 1,136,856 $ 973,840 $ 490,506 Adjustments to reconcile net income to net cash provided by operating activities: Gains on equity warrant assets, net (138,078 ) (89,142 ) (54,555 ) Gains on investment securities, net (45,345 ) (13,546 ) (17,060 ) Distributions of earnings from investment securities 49,776 47,596 14,015 Net income of bank subsidiary (1,036,618 ) (933,641 ) (446,769 ) Net income on nonbank subsidiaries (57,371 ) (25,212 ) (13,002 ) Cash dividends from bank subsidiary 733,000 140,000 90,000 Amortization of share-based compensation 66,815 45,675 36,900 Decrease in other assets 27,205 51,169 12,959 Increase in other liabilities 21,391 21,619 11,774 Other, net 8,084 (31,024 ) 316 Net cash provided by operating activities 765,715 187,334 125,084 Cash flows from investing activities: Net decrease (increase) in investment securities from purchases, sales and maturities 128,635 73,742 (152,015 ) Net (increase) decrease in loans (15,245 ) — 13,337 Increase in investment in bank subsidiary (42,952 ) (31,292 ) (38,927 ) Decrease (increase) in investment in nonbank subsidiaries 23,275 (5,323 ) 34,374 Acquisition of SVB Leerink (265,601 ) — — Net cash (used for) provided by investing activities (171,888 ) 37,127 (143,231 ) Cash flows from financing activities: Principal payments of long-term debt (358,395 ) — (51,546 ) Proceeds from issuance of common stock, ESPP and ESOP 24,818 18,387 27,003 Net proceeds from the issuance of preferred stock 340,138 — — Common stock repurchase (352,511 ) (147,123 ) — Net cash (used for) by financing activities (345,950 ) (128,736 ) (24,543 ) Net increase (decrease) in cash and cash equivalents 247,877 95,725 (42,690 ) Cash and cash equivalents at beginning of period 553,049 457,324 500,014 Cash and cash equivalents at end of period $ 800,926 $ 553,049 $ 457,324

Unaudited Quarterly Financial D

Unaudited Quarterly Financial Data	12 Months Ended
Unaudited Quarterly Financial Data	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Unaudited Quarterly Financial Data	Unaudited Quarterly Financial Data Our supplemental consolidated financial information for each three month period in 2019 and 2018 are as follows: Three months ended (Dollars in thousands, except per share amounts) March 31, June 30, September 30, December 31, 2019: Interest income $ 551,014 $ 585,767 $ 583,892 $ 588,735 Interest expense 38,128 56,364 63,248 55,067 Net interest income 512,886 529,403 520,644 533,668 Provision for credit losses 28,551 23,946 36,536 17,383 Noninterest income 280,376 333,750 294,009 313,344 Noninterest expense 365,664 383,522 391,324 460,752 Income before income tax expense 399,047 455,685 386,793 368,877 Income tax expense 107,435 119,114 105,075 94,061 Net income before noncontrolling interests 291,612 336,571 281,718 274,816 Net income attributable to noncontrolling interests (2,880 ) (18,584 ) (14,437 ) (11,960 ) Net income available to common stockholders $ 288,732 $ 317,987 $ 267,281 $ 262,856 Earnings per common share—basic $ 5.49 $ 6.12 $ 5.19 $ 5.10 Earnings per common share—diluted 5.44 6.08 5.15 5.06 2018: Interest income $ 432,398 $ 481,301 $ 513,313 $ 542,897 Interest expense 12,535 14,858 20,091 28,437 Net interest income 419,863 466,443 493,222 514,460 Provision for credit losses 27,972 29,080 17,174 13,644 Noninterest income 155,518 192,689 210,070 186,707 Noninterest expense 265,417 305,739 309,445 307,592 Income before income tax expense 281,992 324,313 376,673 379,931 Income tax expense 73,966 77,287 95,308 105,000 Net income before noncontrolling interests 208,026 247,026 281,365 274,931 Net income attributable to noncontrolling interests (13,065 ) (9,228 ) (6,548 ) (8,667 ) Net income available to common stockholders $ 194,961 $ 237,798 $ 274,817 $ 266,264 Earnings per common share—basic $ 3.69 $ 4.48 $ 5.16 $ 5.01 Earnings per common share—diluted 3.63 4.42 5.10 4.96

Legal Matters

Legal Matters	12 Months Ended
Legal Matters	Dec. 31, 2019
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 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.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2019
Accounting Policies [Abstract]
Use of Estimates and Assumptions	Use of Estimates and Assumptions The preparation of 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 loan losses and the allowance for unfunded credit commitments. The following discussion provides additional background on our significant accounting policies.
Principles of Consolidation and Presentation	Principles of Consolidation and Presentation Our 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 and, 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 VIEs economic performance, and (b) the 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.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents consist of cash on hand, cash balances due from banks, interest-earning deposits, Federal Reserve deposits, federal funds sold, securities purchased under agreements to resell and other short-term investment securities. For the consolidated statements of cash flows, we consider cash equivalents to be investments that are readily convertible to known amounts of cash, so near to their maturity that they present an insignificant risk of change in fair value due to changes in market interest rates, and purchased in conjunction with our cash management activities.
Available-for-Sale and Held-to-Maturity Securities	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 other-than-temporary impairment 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 downgrade represents an increased level of risk of other-than-temporary impairment, and as a part of our consideration of recording an other-than-temporary impairment we will assess the issuer's ability to service the debt and to repay the principal at contractual maturity. We apply the other-than-temporary impairment standards of ASC 320, Investments-Debt and Equity Securities . For our debt securities, we have the intent and ability to hold these securities until we recover our cost less any credit-related loss. We separate the amount of the other-than-temporary impairment, if any, into the amount that is credit related (credit loss component) and the amount due to all other factors. The credit loss component is recognized in earnings and is the difference between a security's amortized cost basis and the present value of expected future cash flows discounted at the security's effective interest rate. The amount due to all other factors is recognized in other comprehensive income. We consider numerous factors in determining whether a credit loss exists and the period over which the debt security is expected to recover. The following list is not meant to be all inclusive. All of the following factors are considered: • The length of time and the extent to which the fair value has been less than the amortized cost basis (severity and duration); • Adverse conditions specifically related to the security, an industry or geographic area; for example, changes in the financial condition of the issuer of the security, or in the case of an asset-backed debt security, changes in the financial condition of the underlying loan obligors. Examples of those changes include any of the following: ◦ Changes in technology; ◦ The discontinuance of a segment of the business that may affect the future earnings potential of the issuer or underlying loan obligors of the security; and ◦ Changes in the quality of the credit enhancement. • The historical and implied volatility of the fair value of the security; • The payment structure of the debt security and the likelihood of the issuer being able to make payments that increase in the future; • Failure of the issuer of the security to make scheduled interest or principal payments; • Any changes to the rating of the security by a rating agency; and • Recoveries or additional declines in fair value after the balance sheet date. In accordance with ASC 310-20, Receivables-Nonrefundable Fees and Other Costs , we use estimates of future principal prepayments, provided by third-party market-data vendors, in addition to actual principal prepayment experience to calculate the constant effective yield necessary to apply the effective interest method in the amortization of purchase discounts or premiums on mortgage-backed securities and fixed rate collateralized mortgage obligations. The accretion and amortization of discounts and premiums, respectively, are included in interest income over the contractual terms of the underlying securities replicating the effective interest method. Held-to-Maturity Securities Debt securities purchased in which we have the positive intent and ability to hold to its maturity are classified as held-to-maturity securities and are recorded at amortized cost. Transfers of investment securities into the held-to-maturity category from the available-for-sale category are made at fair value at the date of transfer. The net unrealized gains, net of tax, are retained in other comprehensive income, and the carrying value of the held-to-maturity securities are amortized over the life of the securities in a manner consistent with the amortization of a premium or discount.
Non-Marketable and Other Securities	Non-Marketable and Other Equity Securities Non-marketable and other equity securities include investments in venture capital and private equity funds, SPD-SVB, debt funds, private and public portfolio companies, including public equity securities held as a result of equity warrant assets exercised, and investments in qualified affordable housing projects. A majority of these investments are managed through our SVB Capital funds business in funds of funds and direct venture funds. Our accounting for investments in non-marketable and other equity securities depends on several factors, including the level of ownership, power to control and the legal structure of the subsidiary making the investment. As further described below, we base our accounting for such securities on: (i) fair value accounting, (ii) other investments without a readily determinable fair value, (iii) equity method accounting and (iv) the proportional amortization method which is used only for qualified affordable housing projects.
Fair Value Accounting	The general partner interests of these funds are controlled, and in some cases, owned by SVB Financial. The limited partners of these funds do not have substantive participating or kick-out rights. Therefore, these funds are consolidated and any gains or losses resulting from changes in the estimated fair value of the investments are recorded as investment gains or losses in our consolidated net income. Under fair value accounting, investments are carried at their estimated fair value based on financial information obtained as the general partner of the fund or obtained from the funds' respective general partner. For direct private company investments, valuations are based upon 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, current and projected operating performance, exit strategies and financing transactions subsequent to the acquisition of the investment. For direct equity investments in public companies, valuations are based on quoted market prices less a discount if the securities are subject to certain sales restrictions. Sales restriction discounts generally range from ten percent to twenty percent depending on the sale restrictions which typically range from three to six months . The valuation of non-marketable securities in shares of private company capital stock and the valuation of other securities in shares of public company stock with certain sales restrictions is subject to significant judgment. The inherent uncertainty in the process of valuing securities for which a ready market does not exist may cause our estimated values of these securities to differ significantly from the values that would have been derived had a ready market for the securities existed, and those differences could be material. For our fund investments, we utilize the net asset value as obtained from the general partners of the fund investments as the funds do not have a readily determinable fair value. The general partners of our fund investments prepare their financial statements using guidance consistent with fair value accounting. We account for differences between our measurement date and the date of the fund investment's net asset value by using the most recent available financial information from the investee general partner, for example September 30 th , for our December 31 st consolidated financial statements. We adjust the value of our investments for any contributions paid, distributions received from the investment and known significant fund transactions or market events about which we are aware through information provided by the fund managers or from publicly available transaction data during the reporting period. Gains or losses resulting from changes in the estimated fair value of the investments and from distributions received are recorded as gains on investment securities, net, a component of noninterest income. The portion of any investment gains or losses attributable to the limited partners is reflected as net income attributable to noncontrolling interests and adjusts our net income to reflect its percentage ownership. Fair Value Accounting Our managed funds are investment companies under the AICPA Audit and Accounting Guide for Investment Companies (codified in ASC 946) and accordingly, these funds report their investments at estimated fair value, with unrealized gains and losses resulting from changes in fair value reflected as investment gains or losses in our consolidated statements of income. Our non-marketable and other equity securities recorded pursuant to fair value accounting consist of our investments through the following funds: • Funds of funds, which make investments in venture capital and private equity funds, and • Direct venture funds, which make equity investments in privately held companies.
Other Investments without a Readily Determinable Fair Value	Other Investments without a Readily Determinable Fair Value Effective January 1, 2018 we adopted ASU 2016-01 Recognition and Measurement of Financial Assets and Financial Liabilities which eliminated the concept of cost method accounting and created an additional method of accounting, other investments without a readily determinable fair value. These investments include direct equity investments in private companies. The carrying value is based on the price at which the investment was acquired less any impairment, if any, 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.
Equity Method	Equity Method Our equity method non-marketable securities consist of investments in venture capital and private equity funds, privately-held companies, debt funds, and joint ventures. Our equity method non-marketable securities and related accounting policies are described as follows: • Equity securities, such as preferred or common stock in privately-held companies in which we hold a voting interest of at least 20 percent , or in which we have the ability to exercise significant influence over the investees' operating and financial policies through board involvement or other influence, are accounted for under the equity method, • Investments in limited partnerships in which we hold voting interests of more than 5 percent , or in which we have the ability to exercise significant influence over the partnerships' operating and financial policies, are accounted for using the equity method, and • Our China Joint Venture partnership, for which we have 50 percent ownership, is accounted for under the equity method. We recognize our proportionate share of the results of operations of these equity method investees in our results of operations, based on the most current financial information available from the investee. We review our investments accounted for under the equity method at least quarterly for possible other-than-temporary impairment. Our review typically includes an analysis of facts and circumstances for each investment, the expectations of the investment's future cash flows and capital needs, variability of its business and the company's exit strategy. For our fund investments, we utilize the net asset value per share as provided by the general partners of the fund investments. We account for differences between our measurement date and the date of the fund investment's net asset value by using the most recent available financial information from the investee general partner, for example September 30 th , for our December 31 st consolidated financial statements. We adjust the value of our investments for any contributions paid, distributions received from the investment, and known significant fund transactions or market events about which we are aware through information provided by the fund managers or from publicly available transaction data during the reporting period.
Proportional Amortization Method	Proportional Amortization Method In order to fulfill our responsibilities under the Community Reinvestment Act, we invest as a limited partner in low income housing partnerships that operate qualified affordable housing projects and generate tax benefits, including federal low income housing tax credits, for investors. The partnerships are deemed to be VIEs because they do not have sufficient equity investment at risk and are structured with non-substantive voting rights. We are not the primary beneficiary of the VIEs and do not consolidate them. Our investments in low income housing partnerships are recorded in non-marketable and other equity securities within our investment securities portfolio on the consolidated balance sheet. As a practical expedient, we amortize the investment in proportion to the allocated tax benefits under the proportional amortization method of accounting and present such benefits net of investment amortization in income tax expense.
Loans	Loans Loans are reported at 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 Loan Losses	Allowance for Loan Losses The allowance for loan losses considers credit risk and is established through a provision for loan losses charged to expense. Our allowance for loan losses is established for estimated loan losses that are probable and incurred but not yet realized. Our evaluation process is designed to determine that the allowance for loan losses is appropriate at the balance sheet date. The process of estimating loan losses is inherently imprecise. We maintain a systematic process for the evaluation of individual loans and pools of loans for inherent risk of loan losses. At the time of approval, each loan in our portfolio is assigned a Credit Risk Rating and industry niche. 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, the depth and experience of the borrower's management team, potential loan concentrations, and general economic conditions. 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. Our review process evaluates the appropriateness of the credit risk rating and allocation of the allowance for loan losses, as well as other account management functions. The allowance for loan losses is determined based on a qualitative analysis and a formula allocation for similarly risk-rated loans by portfolio segment and individually for impaired loans. The formula allocation provides the average loan loss experience for each portfolio segment, which considers our quarterly historical loss experience since the year 2000, both by risk-rating category and client industry sector. The resulting loan loss factors for each risk-rating category and client industry sector are ultimately applied to the respective period-end client loan balances for each corresponding risk-rating category by client industry sector to provide an estimation of the allowance for loan losses. The probable loan loss experience for any one year period of time is reasonably expected to be greater or less than the average as determined by the loss factors. As such, management applies a qualitative allocation to the results of the aforementioned model to ascertain the total allowance for loan losses. This qualitative allocation is based on management's assessment of the risks that may lead to a loan loss experience different from our historical loan loss experience. Based on management's prediction or estimate of changing risks in the lending environment, the qualitative allocation may vary significantly from period to period and includes, but is not limited to, consideration of the following factors: • Changes in lending policies and procedures, including underwriting standards and collections, and charge-off and recovery practices; • Changes in national and local economic business conditions, including the market and economic condition of our clients' industry sectors; • Changes in the nature of our loan portfolio; • Changes in experience, ability, and depth of lending management and staff; • Changes in the trend of the volume and severity of past due and classified loans; • Changes in the trend of the volume of nonaccrual loans, troubled debt restructurings and other loan modifications; • Reserve floor for portfolio segments that would not draw a minimum reserve based on the lack of historical loan loss experience; • Reserve for large funded loan exposure; • Reserve for performing impaired loan exposure; and • Other factors as determined by management from time to time. While the evaluation process of our allowance for loan losses uses historical and other objective information, the classification of loans and the establishment of the allowance for loan losses rely, to a great extent, on the judgment and experience of our management.
Allowance for Unfunded Credit Commitments	Allowance for Unfunded Credit Commitments We record a liability for probable and estimable incurred losses associated with our unfunded credit commitments being funded and subsequently being charged off. Each quarter, every unfunded client credit commitment is allocated to a credit risk-rating in accordance with each client's credit risk rating and portfolio segment. We use the segment specific historical loan loss factors described under our allowance for loan losses to calculate the loan loss experience if unfunded credit commitments are funded. Separately, we use historical trends to calculate a probability of an unfunded credit commitment being funded. We apply the loan funding probability factor to risk-factor adjusted unfunded credit commitments by credit risk-rating and portfolio segment to derive the allowance for unfunded credit commitments, similar to funded loans. The allowance for unfunded credit commitments also includes certain qualitative allocations as deemed appropriate by management. We include the allowance for unfunded credit commitments in other liabilities and the related provision in our provision for credit losses.
Uncollectible Loans and Write-offs	Uncollectible Loans and Write-offs Our charge-off policy applies to all loans, regardless of portfolio segment. Commercial loans are considered for a full or partial charge-off in the event that principal or interest is over 180 days past due and the loan lacks sufficient collateral and it is not in the process of collection, provided that a loss event has been defined and the charge-off is consistent with GAAP. Consumer loans are considered for a full or partial charge-off in the event that principal or interest is over 120 days past due and the loan lacks sufficient collateral and it is not in the process of collection, provided that a loss event has been defined and the charge-off is consistent with GAAP. We also consider writing off loans in the event of any of the following circumstances: 1) the loan, or a portion of the loan is deemed uncollectible due to: a) the borrower's inability to make recurring payments, b) material changes in the borrower's financial condition, or c) the expected sale of all or a portion of the borrower's business is insufficient to repay the loan in full, or 2) the loan has been identified for charge-off by regulatory authorities.
Troubled Debt Restructurings (TDRs)	Troubled Debt Restructurings A TDR arises from the modification of a loan where we have granted a concession to the borrower related to the borrower's financial difficulties that we would not have otherwise considered for economic or legal reasons. These concessions may include: (1) deferral of payment for more than an insignificant period of time that does not include sufficient offsetting borrower concessions; (2) interest rate reductions; (3) extension of the maturity date outside of ordinary course extension; (4) principal forgiveness; and/or (5) reduction of accrued interest. We use the factors in ASC 310-40, Receivables, Troubled Debt Restructurings by Creditors, in analyzing when a borrower is experiencing financial difficulty, and when we have granted a concession, both of which must be present for a restructuring to meet the criteria of a TDR. If we determine that a TDR exists, we measure impairment based on the present value of expected future cash flows discounted at the loan's effective interest rate, except that as a practical expedient, we may also measure impairment based on a loan's observable market price, or the fair value of the collateral less selling costs if the loan is a collateral-dependent loan.
Impaired Loans	Impaired Loans A loan is considered impaired when, based upon currently known information, it is deemed probable that we will be unable to collect all amounts due according to the contractual terms of the agreement. On a quarterly basis, we review our loan portfolio for impairment. Within each class of loans, we review individual loans for impairment based on credit risk ratings. 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 "Performing (Criticized)" and could be classified as a performing impaired loan. For each loan identified as impaired, we measure the impairment based upon the present value of expected future cash flows discounted at the loan's effective interest rate. In limited circumstances, we may measure impairment based on the loan's observable market price or the fair value of the collateral less selling costs if the loan is collateral dependent. Impaired collateral-dependent loans will have independent appraisals completed and accepted at least annually. 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. If it is determined that the value of an impaired loan is less than the recorded investment in the loan, net of previous charge-offs and payments collected, we recognize impairment through the allowance for loan losses as determined by our analysis.
Nonaccrual Loans	Nonaccrual Loans Loans are placed on nonaccrual status when they become 90 days past due as to principal or interest payments (unless the principal and interest are well secured and in the process of collection); or when we have determined, based upon currently known information, that the timely collection of principal or interest is not probable. When a loan is placed on nonaccrual status, the accrued interest and fees are reversed against interest income and the loan is accounted for using the cost recovery method thereafter until qualifying for return to accrual status. For a loan to be returned to accrual status, all delinquent principal and interest must become current in accordance with the terms of the loan agreement and future collection of remaining principal and interest must be deemed probable. We apply a cost recovery method in which all cash received is applied to the loan principal until it has been collected. Under this approach, interest income is recognized after total cash flows received exceed the recorded investment at the date of initial nonaccrual. All of our nonaccrual loans have credit risk ratings of 8 or 9 and are classified under the nonperforming impaired category.
Premises and Equipment	Premises and Equipment Premises and equipment are reported at cost less accumulated depreciation and amortization. Depreciation and amortization are computed using the straight-line method over the estimated useful lives of the assets or the terms of the related leases, whichever is shorter. The maximum estimated useful lives by asset classification are as follows: Leasehold improvements Lesser of lease term or asset life Furniture and equipment 7 years Computer software 3-7 years Computer hardware 3-5 years We capitalize the costs of computer software developed or obtained for internal use, including costs related to developed software, purchased software licenses and certain implementation costs. For property and equipment that is retired or otherwise disposed of, the cost and related accumulated depreciation are removed from the accounts and the resulting gain or loss is included in noninterest expense in consolidated net income.
Lease Obligations	Lease Obligations We have entered into leases for real estate and various equipment utilized for the business. At the inception of the lease, each lease is evaluated to determine whether the lease will be accounted for as an operating or finance lease. We had no finance lease obligations at December 31, 2019 and 2018 . We have made an accounting policy election not to recognize right-of-use assets and lease liabilities that arise from short-term leases for any class of underlying asset. In addition to excluding short-term leases, we have implemented an accounting policy in which non-lease components are not separated from lease components in the measurement of right-of-use ("ROU") asset and lease liabilities for all lease contracts. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at the commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments. We use the implicit rate when readily determinable. The operating lease ROU asset also includes any lease payments made and excludes lease incentives. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term.
Business Combinations	Business Combinations Business combinations are accounted for under the acquisition method of accounting. Acquired assets, including separately identifiable intangible assets, and assumed liabilities are recorded at their acquisition-date estimated fair values. The excess of the cost of acquisition over these fair values is recognized as goodwill. During the measurement period, which cannot exceed one year from the acquisition date, changes to estimated fair values are recognized as an adjustment to goodwill. Certain transaction costs are expensed as incurred.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill is not amortized and is subject, at a minimum, to an annual impairment assessment. A quantitative assessment will be completed if we have not recently completed a fair value assessment of the associated reporting unit and compared the assessed fair value of that reporting unit with its carrying amount, including goodwill. Should we be required to calculate the fair value of the entity, we would generally apply a discounted cash flow analysis that uses forecasted performance estimates, and a discount rate leveraging a reporting unit specific capital asset pricing model, which in turn uses assumptions related to market performance and various macroeconomic and reporting unit specific risks. If this quantitative assessment was recently completed and if we deem the estimate to be current and reliable, we will not perform a full quantitative assessment of the reporting unit’s fair value for that reporting period. Instead, we will qualitatively determine whether it is more likely than not that the fair value of the reporting unit is less than its carrying amount, including goodwill. As part of this qualitative analysis we consider macroeconomic factors that might impact the entity’s performance, entity-specific financial performance of the reporting unit, changes in management or strategy and other factors. We will evaluate goodwill for impairment more frequently if circumstances indicate that the fair value of our reporting units is less than their carrying value, including goodwill.
Fair Value Measurements	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 consolidated financial statements. Fair Value Measurement-Definition and Hierarchy 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 are compared to the 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. If we determine 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 to six months. 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. It is our policy to maximize the use of observable inputs and minimize the use of unobservable inputs when developing fair value measurements. When available, we use quoted market prices to measure fair value. If market prices are not available, fair value measurement is based upon valuation approaches that use primarily market-based or independently-sourced market parameters, including interest rate yield curves, prepayment speeds, option volatilities and currency rates. Substantially all of our financial instruments use the foregoing methodologies, and are categorized as a Level 1 or Level 2 measurement in the fair value hierarchy. However, in certain cases, when market observable inputs for our valuation techniques may not be readily available, we are required to make judgments about assumptions we believe market participants would use in estimating the fair value of the financial instrument, and based on the significance of those judgments, the measurement may be determined to be a Level 3 fair value measurement. The degree of management judgment involved in determining the fair value of a financial instrument is dependent upon the availability of quoted market prices or observable market parameters. For financial instruments that trade actively and have quoted market prices or observable market parameters, there is minimal subjectivity involved in measuring fair value. When observable market prices and parameters are not fully available, management judgment is necessary to estimate fair value. For inactive markets, there is little information, if any, to evaluate if individual transactions are orderly. Accordingly, we are required to estimate, based upon all available facts and circumstances, the degree to which orderly transactions are occurring and provide more weighting to price quotes that are based upon orderly transactions. In addition, changes in the market conditions may reduce the availability of quoted prices or observable data. For example, reduced liquidity in the capital markets or changes in secondary market activities could result in observable market inputs becoming unavailable. Therefore, when market data is not available, we use valuation techniques requiring more management judgment to estimate the appropriate fair value measurement. Accordingly, the degree of judgment exercised by management in determining fair value is greater for financial assets and liabilities categorized as Level 3.
Fee-based Services Revenue Recognition	Fee-based Services Revenue Recognition Refer to Note 17—“Noninterest Income” of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report for our fee-based services revenue recognition policies for our contracts with customers.
Income Taxes	Income Taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Our federal, state and foreign income tax provisions are based upon taxes payable for the current year, current year changes in deferred taxes related to temporary differences between the tax basis and financial statement balances of assets and liabilities, and a reserve for uncertain tax positions. Deferred tax assets and liabilities are included in the consolidated financial statements at currently enacted income tax rates applicable to the period in which the deferred tax assets and liabilities are expected to be realized. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes. A valuation allowance is provided, when it is determined based upon available evidence, that it is more likely than not that some portion of the deferred tax asset will not be realized. We file a consolidated federal income tax return, and consolidated, combined, or separate state income tax returns as appropriate. Our foreign incorporated subsidiaries file tax returns in the applicable foreign jurisdictions. We record interest and penalties related to unrecognized tax benefits in other noninterest expense, a component of consolidated net income.
Share-Based Compensation	Share-Based Compensation For all stock-based awards granted, stock-based compensation expense is amortized on a straight-line basis over the requisite service period, including consideration of vesting conditions and anticipated forfeitures. The fair value of stock options are measured using the Black-Scholes option-pricing model and the fair value for restricted stock awards and restricted stock units are based on the quoted price of our common stock on the date of grant.
Earnings Per Share	Earnings Per Share
Derivative Financial Instruments	Derivative Financial Instruments All derivative instruments are recorded on the balance sheet at fair value. The accounting for changes in fair value of a derivative financial instrument depends on whether the derivative financial instrument is designated and qualifies as part of a hedging relationship and, if so, the nature of the hedging activity. Changes in fair value are recognized through earnings for derivatives that do not qualify for hedge accounting treatment, or that have not been designated in a hedging relationship. Cash Flow Hedges For derivative instruments that are designated and qualify as a cash flow hedge, 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, Derivatives and Hedging ("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. Equity Warrant Assets In connection with negotiated credit facilities and certain other services, we may obtain equity warrant assets giving us the right to acquire stock in primarily private, venture-backed companies in the technology and life science/healthcare industries. We hold these assets for prospective investment gains. We do not use them to hedge any economic risks nor do we use other derivative instruments to hedge economic risks stemming from equity warrant assets. We account for equity warrant assets in certain private and public client companies as derivatives when they contain net settlement terms and other qualifying criteria under ASC 815. In general, equity warrant assets entitle us to buy a specific number of shares of stock at a specific price within a specific time period. Certain equity warrant assets contain contingent provisions, which adjust the underlying number of shares or purchase price upon the occurrence of certain future events. Substantially all of our warrant agreements contain net share settlement provisions, which permit us to receive at exercise a share count equal to the intrinsic value of the warrant divided by the share price (otherwise known as a “cashless” exercise). These equity warrant assets are recorded at fair value and are classified as derivative assets, a component of other assets, on our consolidated balance sheet at the time they are obtained. The grant date fair values of equity warrant assets received in connection with the issuance of a credit facility are deemed to be loan fees and recognized as an adjustment of loan yield through loan interest income. Similar to other loan fees, the yield adjustment related to grant date fair value of warrants is recognized over the life of that credit facility. 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. We value our equity warrant assets using a Black-Scholes option pricing model, which incorporates the following significant inputs: • An underlying asset value, which is estimated based on current information available in valuation reports, including any information regarding subsequent rounds of funding or performance of a company. • Stated strike price, which can be adjusted for certain warrants upon the occurrence of subsequent funding rounds or other future events. • Price volatility or risk associated with possible changes in the warrant price. The volatility assumption is based on historical price volatility of publicly traded companies within indices similar in nature to the underlying client companies issuing the warrant. The actual volatility input is based on the mean and median volatility for an individual public company within an index for the past 16 quarters, from which an average volatility was derived. • Actual data on terminations and exercises of our warrants are utilized as the basis for determining the expected remaining life of the warrants in each financial reporting period. Warrants may be exercised in the event of acquisitions, mergers or IPOs, and cancelled due to events such as bankruptcies, restructuring activities or additional financings. These events cause the expected remaining life assumption to be shorter than the contractual term of the warrants. • The risk-free interest rate is derived from the Treasury yield curve and is calculated based on a weighted average of the risk-free interest rates that correspond closest to the expected remaining life of the warrant. • Other adjustments, including a marketability discount, are estimated based on management's judgment about the general industry environment. • Number of shares and contingencies associated with obtaining warrant positions such as the funding of associated loans. When a portfolio company completes an IPO on a publicly reported market or is acquired, we may exercise these equity warrant assets for shares or cash. In the event of an exercise for common stock shares, the basis or value in the common stock shares is reclassified from other assets to investment securities on the balance sheet on the latter of the exercise date or corporate action date. The common stock of public companies are classified as non-marketable and other equity securities. Changes in the fair value of the common stock shares is recorded as gains or losses on investments securities, in noninterest income, a component of consolidated net income. The common stock of private companies are classified as non-marketable and other equity securities. We account for these securities under the methodology under ASU 2016-01, other investments without a readily determinable fair value. The carrying value in the private common stock without a readily determinable fair 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 and are recorded as gains or losses on investments securities, in noninterest income, a component of consolidated net income. Foreign Exchange Forwards and Foreign Currency Option Contracts We enter into foreign exchange forward contracts and foreign currency option contracts with clients involved in international activities, either as the purchaser or seller, depending upon the clients' need. We also enter into an opposite-way forward or option contract with a correspondent bank to economically hedge client contracts to mitigate the fair value risk to us from fluctuations in currency rates. Settlement, credit and operational risks remain. We also enter into forward contracts with correspondent banks to economically hedge currency exposure risk related to certain foreign currency denominated assets and liabilities. These contracts are not designated as hedging instruments and are recorded at fair value in our consolidated balance sheets. The contracts generally have terms of one year or less, although we may have contracts extending for up to five years . Generally, we have not experienced nonperformance on these contracts, have not incurred credit losses and anticipate performance by all counterparties to such agreements. Changes in the fair value of these contracts are recognized in consolidated net income under other noninterest income, a component of noninterest income. Period-end gross positive fair values are recorded in other assets and gross negative fair values are recorded in other liabilities. Interest Rate Contracts We sell interest rate contracts to clients who wish to mitigate their interest rate exposure. We economically reduce the interest rate risk from this business by entering into opposite-way contracts with correspondent banks. We do not designate any of these contracts (which are derivative instruments) as qualifying for hedge accounting. Contracts in an asset position are included in other assets and contracts in a liability position are included in other liabilities. The net change in the fair value of these derivatives is recorded through other noninterest income, in noninterest income, a component of consolidated net income.
Recent Accounting Pronouncements	Adoption of New Accounting Standards In February 2016, the FASB issued a new Accounting Standard Update (ASU 2016-02, Leases (Topic 842)), which requires for all operating leases the recognition of a right-of-use ("ROU") asset and a corresponding lease liability, in the statement of financial position. For short term leases (term of 12 months or less), a lessee is permitted to make an accounting election not to recognize lease assets and lease liabilities. The lease cost is allocated over the lease term on a straight-line basis. There were further amendments, including practical expedients, with the issuance of ASU 2018-01, “Leases (Topic 842): Land Easement Practical Expedient for Transition to Topic 842” in January 2018. In July 2018 the FASB issued ASU No. 2018-11, "Leases (Topic 842): Targeted Improvements", which provides us with the option to apply the new leasing standard to all open leases as of the adoption date, on a prospective basis. On January 1, 2019, we adopted the new accounting standard ASU 2016-02, Leases (Topic 842) and all the related amendments ("new lease standard", "ASC 842" or "ASU 2016-02") utilizing the practical expedient to apply the new lease standard as of January 1, 2019 on a prospective basis. We also elected the "package of expedients" and elected as an accounting policy to exclude recording ROU assets and lease liabilities for leases that meet the definition of short-term leases. In addition to excluding short-term leases, we have implemented an accounting policy in which non-lease components are not separated from lease components in the measurement of ROU assets and lease liabilities for all lease contracts. The "package of expedients" allowed us to continue to account for existing leases for which the commencement date is before January 1, 2019, in accordance with the previous guidance, Leases (Topic 840), throughout the lease term, including periods after adoption of the new guidance. We recognized $146 million in ROU assets and $178 million in lease liabilities as a result of applying the new lease standard as an adjustment to our opening consolidated balance sheet on January 1, 2019. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. See Note 12—"Leases" of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report for additional disclosures related to our leases. In March 2017, the FASB issued ASU No. 2017-08, Receivables—Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities, which amends the amortization period for certain purchased callable debt securities held at a premium. The ASU requires entities to amortize premiums on debt securities by the first call date when the securities have fixed and determinable call dates and prices. The scope of the ASU includes all accounting premiums, such as purchase premiums and cumulative fair value hedge adjustments. The ASU does not change the accounting for discounts, which continue to be recognized over the contractual life of a security. Adoption of the ASU is on a modified retrospective basis through a cumulative effect adjustment to retained earnings as of the beginning of the year of adoption. Adoption of the ASU primarily affected our HTM portfolio of callable state and municipal debt securities. On January 1, 2019, we adopted the ASU and recognized a net reduction to retained earnings of $0.6 million
Reclassifications	Reclassifications

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
Summary of Significant Accounting Policies (Tables)	Dec. 31, 2019
Accounting Policies [Abstract]
Summary of Ownership Interests in Investments Held Under Fair Value Accounting	A summary of our ownership interests in the investments held under fair value accounting as of December 31, 2019 is presented in the following table: Limited partnership Company Direct and Indirect Ownership in Limited Partnership Managed funds of funds Strategic Investors Fund, LP 12.6 % Capital Preferred Return Fund, LP 20.0 Growth Partners, LP 33.0 Managed direct venture funds CP I, LP 10.7
Maximum Estimated Useful Lives by Asset Classification	The maximum estimated useful lives by asset classification are as follows: Leasehold improvements Lesser of lease term or asset life Furniture and equipment 7 years Computer software 3-7 years Computer hardware 3-5 years

Business Combination (Tables)

Business Combination (Tables)	12 Months Ended
Business Combination (Tables)	Dec. 31, 2019
Business Combinations [Abstract]
Schedule of Business Combination, Consideration Transferred	The following table summarizes the allocation of the purchase price to the net assets of SVB Leerink as of January 4, 2019: (Dollars in thousands) January 4, 2019 Cash paid $ 265,601 Replacement award liabilities (1) 7,629 Total purchase consideration $ 273,230 Fair value of net assets acquired 135,407 Goodwill $ 137,823 (1) The replacement award liabilities recognized as part of the total purchase consideration and the post-combination expenses of $9.1 million related to share-based replacement awards will be paid out in cash in accordance with SVB Leerink's original grant date vesting schedules.
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table summarizes the estimated fair value of assets acquired and liabilities assumed upon the finalization of the purchase: (Dollars in thousands) January 4, 2019 Assets acquired: Cash and cash equivalents $ 163,273 Investment securities 33,644 Accounts receivable 36,538 Intangible assets 60,900 Other assets 35,128 Total assets acquired 329,483 Liabilities assumed: Accrued compensation 137,206 Due to broker-dealers 18,483 Other liabilities 33,131 Noncontrolling interests 5,256 Total liabilities assumed 194,076 Fair value of net assets acquired $ 135,407
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination	The following table summarizes the fair value and estimated useful lives of the other intangible assets at the date of acquisition: (Dollars in thousands) Estimated Fair Value Weighted Average Estimated Useful Life - in Years Other intangible assets: Customer relationships $ 42,000 11.0 Other 18,900 9.9 Total other intangible assets $ 60,900 The components of net other intangible assets related to the acquisition of SVB Leerink were as follows: December 31, 2019 (Dollars in thousands) Gross Amount Accumulated Amortization Net Carrying Amount Other intangible assets: Customer relationships $ 42,000 $ 3,818 $ 38,182 Other 18,900 7,665 11,235 Total other intangible assets $ 60,900 $ 11,483 $ 49,417
Business Combination, Results of Acquiree Included in Combined Entity	The following table represents the amount of revenue and earnings attributable to SVB Leerink that is included in our financial results for the year ended December 31, 2019: (Dollars in thousands) Year ended December 31, 2019 Net interest income $ 1,252 Noninterest income 265,841 Noninterest expense 252,678 Income before income tax expense 14,415 Income tax expense 3,566 Net income attributable to noncontrolling interests 1,325 Net income available to common stockholders $ 9,524
Restructuring and Related Costs	The following table shows the components of acquisition-related activities expense for the year ended December 31, 2019: (Dollars in thousands) Year ended December 31, 2019 Professional fees $ 919 Other 396 Total acquisition-related expenses $ 1,315

Stockholders' Equity and EPS (T

Stockholders' Equity and EPS (Tables)	12 Months Ended
Stockholders' Equity and EPS (Tables)	Dec. 31, 2019
Equity and Earnings Per Share [Abstract]
Reclassification out of Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income The following table summarizes the items reclassified out of accumulated other comprehensive income into the Consolidated Statements of Income for 2019 , 2018 and 2017 : Year ended December 31, (Dollars in thousands) Income Statement Location 2019 2018 2017 Reclassification adjustment for losses on available-for-sale securities included in net income Gains on investment securities, net $ 3,905 $ 740 $ 5,189 Related tax benefit Income tax expense (1,087 ) (205 ) (2,098 ) Reclassification adjustment for losses on cash flow hedges included in net income Net interest income 5,358 — — Related tax benefit Income tax expense (1,489 ) — — Total reclassification adjustment for losses included in net income, net of tax $ 6,687 $ 535 $ 3,091
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 2019 , 2018 and 2017 . Over the next 12 months, we expect that approximately $3.2 million in accumulated other comprehensive income ("AOCI") at December 31, 2019, related to our cash flow hedges will be reclassified out of AOCI and recognized in net income. Year ended December 31, (Dollars in thousands) 2019 2018 2017 Balance, beginning of period, net of tax $ — $ — $ — Net decrease in fair value, net of tax (5,999 ) — — Net realized loss reclassified to net income, net of tax 3,869 — — Balance, end of period, net of tax $ (2,130 ) $ — $ —
Reconciliation of Basic EPS to Diluted EPS	The following is a reconciliation of basic EPS to diluted EPS for 2019 , 2018 and 2017 : Year ended December 31, (Dollars and shares in thousands, except per share amounts) 2019 2018 2017 Numerator: Net income available to common stockholders $ 1,136,856 $ 973,840 $ 490,506 Denominator: Weighted average common shares outstanding—basic 51,915 53,078 52,588 Weighted average effect of dilutive securities: Stock options and ESPP 227 377 385 Restricted stock units 169 317 333 Weighted average common shares outstanding—diluted 52,311 53,772 53,306 Earnings per common share: Basic $ 21.90 $ 18.35 $ 9.33 Diluted 21.73 18.11 9.20
Weighted Average Common Shares Excluded from Diluted EPS Calculation	The following table summarizes the weighted average common shares excluded from the diluted EPS calculation due to the antidilutive effect for 2019 , 2018 and 2017 : Year ended December 31, (Shares in thousands) 2019 2018 2017 Stock options 167 59 73 Restricted stock units 250 85 1 Total 417 144 74
Schedule of Preferred Stock	The following table summarizes our preferred stock at December 31, 2019: Series Description Amount outstanding (in millions) Carrying value (in millions) Shares issued and outstanding Par Value Ownership interest per depository share Liquidation preference per depository share 2019 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 $ —

Share-Based Compensation (Table

Share-Based Compensation (Tables)	12 Months Ended
Share-Based Compensation (Tables)	Dec. 31, 2019
Share-based Payment Arrangement [Abstract]
Share Based Compensation and Related Benefits	In 2019 , 2018 and 2017 , we recorded share-based compensation and related benefits as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Share-based compensation expense $ 66,815 $ 45,675 $ 36,900 Income tax benefit related to share-based compensation expense (16,152 ) (10,997 ) (12,845 ) Capitalized compensation costs 1,517 1,466 1,071
Unrecognized Share Based Compensation Expense	As of December 31, 2019 , unrecognized share-based compensation expense was as follows: (Dollars in thousands) Unrecognized Expense Weighted Average Expected Recognition Period - in Years Stock options $ 14,313 2.52 Restricted stock awards/units 101,310 2.66 Total unrecognized share-based compensation expense $ 115,623
Weighted Average Assumptions and Fair Values Used for Employee Stock Options and Restricted Stock Units	The following weighted average assumptions and fair values were used for our employee stock options and restricted stock units: Equity Incentive Plan Awards 2019 2018 2017 Weighted average expected term of options - in years 4.6 4.8 4.9 Weighted average expected volatility of the Company's underlying common stock 35.5 % 34.7 % 33.7 % Risk-free interest rate 2.26 2.82 1.81 Expected dividend yield — — — Weighted average grant date fair value - stock options $ 83.50 $ 105.81 $ 57.81 Weighted average grant date fair value - restricted stock units 243.65 294.50 181.23
Weighted Average Assumptions and Fair Values Used for ESPP	The following weighted average assumptions and fair values were used for our ESPP: ESPP 2019 2018 2017 Expected term in years 0.5 0.5 0.5 Weighted average expected volatility of the Company's underlying common stock 38.1 % 32.2 % 31.2 % Risk-free interest rate 2.40 1.79 0.80 Expected dividend yield — — — Weighted average grant date fair value $ 52.90 $ 62.76 $ 41.70
Stock Option Information Related to Equity Incentive Plan	The table below provides stock option information related to the 2006 Equity Incentive Plan for the year ended December 31, 2019 : Options Weighted Average Exercise Price Weighted Average Remaining Contractual Life - in Years Aggregate Intrinsic Value of In-The-Money Options Outstanding at December 31, 2018 679,659 $ 137.19 Granted 126,945 249.15 Exercised (154,897 ) 86.96 Forfeited (25,580 ) 213.26 Expired (720 ) 64.37 Outstanding at December 31, 2019 625,407 169.33 3.63 $ 55,364,613 Vested and expected to vest at December 31, 2019 609,849 167.31 3.58 55,128,404 Exercisable at December 31, 2019 361,503 124.70 2.35 46,760,360
Stock Options Outstanding	The following table summarizes information regarding stock options outstanding and exercisable as of December 31, 2019 : Outstanding Options Exercisable Options Range of Exercise Prices Shares Weighted Average Remaining Contractual Life - in Years Weighted Average Exercise Price Shares Weighted Average Exercise Price $71.11 - 105.14 55,724 0.43 $ 73.67 55,724 $ 73.67 105.15 - 105.84 114,449 3.33 105.18 79,188 105.18 105.85 - 108.59 99,936 1.33 107.94 99,936 107.94 108.60 - 149.65 67,573 2.26 129.13 67,573 129.13 149.66 - 180.62 80,583 4.34 178.07 37,320 178.04 180.63 - 247.01 11,966 6.18 226.22 1,578 210.73 247.02 - 255.58 117,265 6.33 250.43 — — 255.59 - 315.12 75,647 5.33 305.18 19,617 304.39 315.13 - 324.77 2,264 5.60 324.77 567 324.77 Total 625,407 3.63 169.33 361,503 124.70
Information for Restricted Stock Units under Equity Incentive Plan	The table below provides information for restricted stock units under the 2006 Equity Incentive Plan for the year ended December 31, 2019 : Shares Weighted Average Grant Date Fair Value Nonvested at December 31, 2018 597,296 $ 194.48 Granted (1) 543,938 243.65 Vested (227,707 ) 154.96 Forfeited (65,555 ) 195.69 Nonvested at December 31, 2019 847,972 236.54 (1) On February 1, 2019, we granted 125,160 restricted stock awards to SVB Leerink employees at a market price of $238.28 under the retention plan previously announced on November 13, 2018. The restricted stock awards will vest over a five -year period.
Summary of Information Regarding Stock Option and Restricted Stock Activity	The following table summarizes information regarding stock option and restricted stock unit activity during 2019 , 2018 and 2017 : Year ended December 31, (Dollars in thousands) 2019 2018 2017 Total intrinsic value of stock options exercised $ 23,088 $ 40,681 $ 36,173 Total grant date fair value of stock options vested 5,735 5,823 6,094 Total intrinsic value of restricted stock vested 56,101 63,917 40,925 Total grant date fair value of restricted stock vested 35,191 28,813 23,383

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	12 Months Ended
Variable Interest Entities (Tables)	Dec. 31, 2019
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 December 31, 2019 and December 31, 2018 : (Dollars in thousands) Consolidated VIEs Unconsolidated VIEs Maximum Exposure to Loss in Unconsolidated VIEs 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 $ — December 31, 2018: Assets: Cash and cash equivalents $ 9,058 $ — $ — Non-marketable and other equity securities (1) 221,646 568,272 568,272 Accrued interest receivable and other assets 228 — — Total assets $ 230,932 $ 568,272 $ 568,272 Liabilities: Other liabilities (1) 919 205,685 — Total liabilities $ 919 $ 205,685 $ — (1) Included in our unconsolidated non-marketable and other equity securities portfolio at December 31, 2019 and December 31, 2018 are investments in qualified affordable housing projects of $458.5 million and $318.6 million , respectively, and related other liabilities consisting of unfunded commitments of $302.0 million and $205.7 million , respectively.

Reserves on Deposit with the _2

Reserves on Deposit with the Federal Reserve Bank and Federal Bank Stock (Tables)	12 Months Ended
	Dec. 31, 2019
Federal Home Loan Bank Stock and Federal Reserve Bank Stock [Abstract]
Average Required Reserve Balances	The tables below provide information on the required reserve balances at the Federal Reserve, as well as shares held at the FHLB and FRB for the years ended and as of December 31, 2019 and 2018 : Year ended December 31, (Dollars in thousands) 2019 2018 Average required reserve balances at FRB San Francisco $ 315,784 $ 455,866
Shares Held at Federal Reserve Bank and Federal Home Loan Bank	December 31, (Dollars in thousands) 2019 2018 FHLB stock holdings $ 17,250 $ 17,250 FRB stock holdings 43,008 41,628

Cash and Cash Equivalents (Tabl

Cash and Cash Equivalents (Tables)	12 Months Ended
Cash and Cash Equivalents (Tables)	Dec. 31, 2019
Cash and Cash Equivalents [Abstract]
Cash and Cash Equivalents	The following table details our cash and cash equivalents at December 31, 2019 and December 31, 2018 : (Dollars in thousands) December 31, 2019 December 31, 2018 Cash and due from banks (1) $ 6,492,443 $ 3,444,971 Securities purchased under agreements to resell (2) 289,340 123,611 Other short-term investment securities — 2,957 Total cash and cash equivalents $ 6,781,783 $ 3,571,539 (1) At December 31, 2019 and 2018 , $3.7 billion and $1.7 billion , respectively, of our cash and due from banks was deposited at the FRB and was earning interest at the Federal Funds target rate, and interest-earning deposits in other financial institutions were $2.1 billion and $1.2 billion , respectively. (2) At December 31, 2019 and 2018 , securities purchased under agreements to resell were collateralized by U.S. Treasury securities and U.S. agency securities with aggregate fair values of $295 million and $126 million , respectively. None of these securities were sold or repledged as of December 31, 2019 and 2018 .
Securities Purchased Under Agreements to Resell	Additional information regarding our securities purchased under agreements to resell for 2019 and 2018 are as follows: Year ended December 31, (Dollars in thousands) 2019 2018 Average securities purchased under agreements to resell $ 166,205 $ 132,938 Maximum amount outstanding at any month-end during the year 613,247 375,180

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
Investment Securities (Tables)	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Major Components of Investment Securities Portfolio	The major components of our AFS investment securities portfolio at 2019 and 2018 are as follows: 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 December 31, 2018 (Dollars in thousands) Amortized Cost Unrealized Gains Unrealized Losses Carrying Value Available-for-sale securities, at fair value: U.S. Treasury securities $ 4,762,182 $ 11,638 $ (35,562 ) $ 4,738,258 U.S. agency debentures 1,090,426 61 (6,370 ) 1,084,117 Foreign government debt securities 5,815 — (3 ) 5,812 Residential mortgage-backed securities: Agency-issued collateralized mortgage obligations—fixed rate 1,922,618 — (42,400 ) 1,880,218 Agency-issued collateralized mortgage obligations—variable rate 81,270 383 (15 ) 81,638 Total available-for-sale securities $ 7,862,311 $ 12,082 $ (84,350 ) $ 7,790,043
Schedule of Realized Gain (Loss)	The following table summarizes sale activity of available-for-sale securities as recorded in the line item “Gains on investment securities, net," a component of noninterest income: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Sales proceeds $ 2,189,087 $ 474,482 $ 580,871 Net realized gains and losses: Gross realized gains 1,250 127 5,113 Gross realized losses (5,155 ) (867 ) (10,302 ) Net realized losses $ (3,905 ) $ (740 ) $ (5,189 )
Summary of Unrealized Losses on Available for Sale Securities	The following tables summarize our unrealized losses on our AFS securities portfolio into categories of less than 12 months, or 12 months or longer as of December 31, 2019 and 2018 : December 31, 2019 Less than 12 months 12 months or longer (1) Total (Dollars in thousands) Fair Value of Investments Unrealized Losses Fair Value of Investments Unrealized Losses Fair Value of Investments Unrealized Losses 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 temporarily impaired 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 impaired position for a period of time greater than 12 months. As of December 31, 2019 , we do not intend to sell any of our impaired securities prior to recovery of our adjusted 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 adjusted cost basis. Based on our analysis as of December 31, 2019 , we deem all impairments to be temporary, and therefore changes in value for our temporarily impaired securities as of the same date are included in other comprehensive income. Market valuations and impairment analyses on assets in the AFS securities portfolio are reviewed and monitored on a quarterly basis. December 31, 2018 Less than 12 months 12 months or longer (1) Total (Dollars in thousands) Fair Value of Investments Unrealized Losses Fair Value of Investments Unrealized Losses Fair Value of Investments Unrealized Losses Available-for-sale securities: U.S. Treasury securities $ 494,287 $ (3,785 ) $ 3,568,119 $ (31,777 ) $ 4,062,406 $ (35,562 ) U.S. agency debentures 443,790 (1,602 ) 591,216 (4,768 ) 1,035,006 (6,370 ) Foreign government debt securities 5,812 (3 ) — — 5,812 (3 ) Residential mortgage-backed securities: Agency-issued collateralized mortgage obligations—fixed rate 13,430 (22 ) 1,866,788 (42,378 ) 1,880,218 (42,400 ) Agency-issued collateralized mortgage obligations—variable rate — — 13,516 (15 ) 13,516 (15 ) Total temporarily impaired securities (1) $ 957,319 $ (5,412 ) $ 6,039,639 $ (78,938 ) $ 6,996,958 $ (84,350 ) (1) As of December 31, 2018 , we identified a total of 200 investments that were in unrealized loss positions, of which 162 investments totaling $6.0 billion with unrealized losses of $78.9 million have been in an impaired 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 AFS as of December 31, 2019 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 AFS 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. December 31, 2019 (Dollars in thousands) Total One Year After One After Five After U.S. Treasury securities $ 6,894,010 $ 1,835,971 $ 1,890,778 $ 3,167,261 $ — U.S. agency debentures 99,547 — — 99,547 — Foreign government debt securities 9,038 9,038 — — — Residential mortgage-backed securities: Agency-issued collateralized mortgage-backed securities 4,148,791 — — — 4,148,791 Agency-issued collateralized mortgage obligations—fixed rate 1,538,343 — — 1,858 1,536,485 Agency -issued commercial mortgage-backed securities 1,325,190 — — 743,874 581,316 Total $ 14,014,919 $ 1,845,009 $ 1,890,778 $ 4,012,540 $ 6,266,592 The following table summarizes the remaining contractual principal maturities on fixed income investment securities classified as HTM as of December 31, 2019 . For U.S. agency debentures, 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 HTM 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. December 31, 2019 Total One Year or Less After One Year to Five Years After Five Years to Ten Years After Ten Years (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 $ 518,728 $ 524,700 $ — $ — $ 123,100 $ 123,969 $ 395,628 $ 400,731 $ — $ — Residential mortgage-backed securities: Agency-issued mortgage-backed securities 6,992,009 7,132,152 2,066 2,117 76,759 76,956 726,422 725,854 6,186,762 6,327,225 Agency-issued collateralized mortgage obligations - fixed rate 1,608,032 1,600,122 — — — — 624,128 619,180 983,904 980,942 Agency-issued collateralized mortgage obligations - variable rate 178,611 178,446 — — — — — — 178,611 178,446 Agency-issued commercial mortgage-backed securities 2,759,615 2,812,021 — — — — 102,633 110,836 2,656,982 2,701,185 Municipal bonds and notes 1,785,951 1,867,831 13,973 13,984 83,368 84,773 387,278 403,736 1,301,332 1,365,338 Total $ 13,842,946 $ 14,115,272 $ 16,039 $ 16,101 $ 283,227 $ 285,698 $ 2,236,089 $ 2,260,337 $ 11,307,591 $ 11,553,136
Held-to-maturity Securities	The components of our HTM investment securities portfolio at December 31, 2019 and 2018 are as follows: December 31, 2019 (Dollars in thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value Held-to-maturity securities, at 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. December 31, 2018 (Dollars in thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value Held-to-maturity securities, at cost: U.S. agency debentures (1) $ 640,990 $ 2,148 $ (4,850 ) $ 638,288 Residential mortgage-backed securities: Agency-issued mortgage-backed securities 8,103,638 5,011 (157,767 ) 7,950,882 Agency-issued collateralized mortgage obligations—fixed rate 2,183,204 — (62,272 ) 2,120,932 Agency-issued collateralized mortgage obligations—variable rate 214,483 608 (14 ) 215,077 Agency-issued commercial mortgage-backed securities 2,769,706 6,969 (64,374 ) 2,712,301 Municipal bonds and notes 1,575,421 2,304 (26,969 ) 1,550,756 Total held-to-maturity securities $ 15,487,442 $ 17,040 $ (316,246 ) $ 15,188,236 (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. The following tables summarize our unrealized losses on our HTM securities portfolio into categories of less than 12 months and 12 months or longer as of December 31, 2019 and 2018 : December 31, 2019 Less than 12 months 12 months or longer (1) Total (Dollars in thousands) Fair Value of Investments Unrealized Losses Fair Value of Investments Unrealized Losses Fair Value of Investments Unrealized Losses Held-to-maturity securities: U.S. agency debentures $ 125,304 $ (668 ) $ — $ — $ 125,304 $ (668 ) Residential mortgage-backed securities: Agency-issued mortgage-backed securities 132,042 (420 ) 181,585 (1,646 ) 313,627 (2,066 ) Agency-issued collateralized mortgage obligations—fixed rate 350,868 (1,131 ) 872,527 (7,371 ) 1,223,395 (8,502 ) Agency-issued collateralized mortgage obligations—variable rate 143,265 (256 ) 4,615 (3 ) 147,880 (259 ) Agency-issued commercial mortgage-backed securities 307,087 (1,818 ) 310,229 (2,690 ) 617,316 (4,508 ) Municipal bonds and notes 160,414 (1,434 ) — — 160,414 (1,434 ) Total temporarily impaired securities (1) $ 1,218,980 $ (5,727 ) $ 1,368,956 $ (11,710 ) $ 2,587,936 $ (17,437 ) (1) As of December 31, 2019 , we identified a total of 266 investments that were in unrealized loss positions, of which 143 investments totaling $1.4 billion with unrealized losses of $11.7 million have been in an impaired position for a period of time greater than 12 months. As of December 31, 2019 , we do not intend to sell any of our impaired securities prior to recovery of our adjusted 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 adjusted cost basis, which is consistent with our classification of these securities. Based on our analysis as of December 31, 2019 , we deem all impairments to be temporary. Market valuations and impairment analyses on assets in the HTM securities portfolio are reviewed and monitored on a quarterly basis. December 31, 2018 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 Held-to-maturity securities: U.S. agency debentures $ 291,432 $ (2,915 ) $ 66,624 $ (1,935 ) $ 358,056 $ (4,850 ) Residential mortgage-backed securities: Agency-issued mortgage-backed securities 2,493,156 (34,956 ) 3,972,690 (122,811 ) 6,465,846 (157,767 ) Agency-issued collateralized mortgage obligations—fixed rate 16,952 (109 ) 2,103,980 (62,163 ) 2,120,932 (62,272 ) Agency-issued collateralized mortgage obligations—variable rate 3,364 (1 ) 8,101 (13 ) 11,465 (14 ) Agency-issued commercial mortgage-backed securities 177,697 (1,580 ) 1,600,277 (62,794 ) 1,777,974 (64,374 ) Municipal bonds and notes 868,751 (17,075 ) 340,413 (9,894 ) 1,209,164 (26,969 ) Total temporarily impaired securities (1) $ 3,851,352 $ (56,636 ) $ 8,092,085 $ (259,610 ) $ 11,943,437 $ (316,246 ) (1) As of December 31, 2018 , we identified a total of 1,244 investments that were in unrealized loss positions, of which 695 investments totaling $8.1 billion with unrealized losses of $259.6 million
Schedule of Nonmarketable and Other Securities	The major components of our non-marketable and other equity securities portfolio at December 31, 2019 and 2018 are as follows: (Dollars in thousands) December 31, 2019 December 31, 2018 Non-marketable and other equity securities: Non-marketable securities (fair value accounting): Consolidated venture capital and private equity fund investments (1) $ 87,180 $ 118,333 Unconsolidated venture capital and private equity fund investments (2) 178,217 201,098 Other investments without a readily determinable fair value (3) 55,255 25,668 Other equity securities in public companies (fair value accounting) (4) 59,200 20,398 Non-marketable securities (equity method accounting) (5): Venture capital and private equity fund investments 215,367 129,485 Debt funds 7,271 5,826 Other investments 152,863 121,721 Investments in qualified affordable housing projects, net (6) 458,476 318,575 Total non-marketable and other equity securities $ 1,213,829 $ 941,104 (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 December 31, 2019 and 2018 (fair value accounting): December 31, 2019 December 31, 2018 (Dollars in thousands) Amount Ownership % Amount Ownership % Strategic Investors Fund, LP $ 5,729 12.6 % $ 12,452 12.6 % Capital Preferred Return Fund, LP 45,341 20.0 53,957 20.0 Growth Partners, LP 35,976 33.0 50,845 33.0 CP I, LP 134 10.7 1,079 10.7 Total consolidated venture capital and private equity fund investments $ 87,180 $ 118,333 (2) The carrying value represents investments in 205 and 213 funds (primarily venture capital funds) at December 31, 2019 and December 31, 2018 , 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 September 30 th for our December 31 st 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 carrying amount of other investments without a readily determinable fair value at December 31, 2019, and the amounts recognized in earnings for the year ended December 31, 2019 and on a cumulative basis: (Dollars in thousands) Year ended December 31, 2019 Cumulative Adjustments Measurement alternative: Carrying value at December 31, 2019 $ 55,255 Carrying value adjustments: Impairment $ (460 ) $ (460 ) Upward changes for observable prices 1,929 2,348 Downward changes for observable prices (3,511 ) (5,030 ) (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, direct equity investments in public companies held by our consolidated funds, and exchange traded funds held by SVB Leerink. Changes in equity securities measured at fair value are recognized through net income. (5) The following table shows the carrying value and our ownership percentage of each investment at December 31, 2019 and 2018 (equity method accounting): December 31, 2019 December 31, 2018 (Dollars in thousands) Amount Ownership % Amount Ownership % Venture capital and private equity fund investments: Strategic Investors Fund II, LP $ 3,612 8.6 % $ 4,670 8.6 % Strategic Investors Fund III, LP 15,668 5.9 17,396 5.9 Strategic Investors Fund IV, LP 27,064 5.0 28,974 5.0 Strategic Investors Fund V funds 46,830 Various 28,189 Various CP II, LP (i) 5,907 5.1 7,122 5.1 Other venture capital and private equity fund investments 116,286 Various 43,134 Various Total venture capital and private equity fund investments $ 215,367 $ 129,485 Debt funds: Gold Hill Capital 2008, LP (ii) $ 5,525 15.5 % $ 3,901 15.5 % Other debt funds 1,746 Various 1,925 Various Total debt funds $ 7,271 $ 5,826 Other investments: SPD Silicon Valley Bank Co., Ltd. $ 74,190 50.0 % $ 76,412 50.0 % Other investments 78,673 Various 45,309 Various Total other investments $ 152,863 $ 121,721 (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 December 31, 2019 and 2018 : (Dollars in thousands) December 31, 2019 December 31, 2018 Investments in qualified affordable housing projects, net $ 458,476 $ 318,575 Other liabilities 302,031 205,685 The following table presents other information relating to our investments in qualified affordable housing projects for the years ended December 31, 2019 , 2018 and 2017 : Year ended December 31, (Dollars in thousands) 2019 2018 2017 Tax credits and other tax benefits recognized $ 35,037 $ 24,047 $ 17,296 Amortization expense included in provision for income taxes (i) 28,267 18,876 17,362 (i) All investments are amortized using the proportional amortization method and amortization expense is included in the provision for income taxes. Included in amortization expense for the year ended December 31, 2017 is a one-time cumulative effect adjustment of $3.8 million due to the decrease in value of deductions in the 2018 tax year and going forward, due to the TCJ Act federal corporate income tax rate reduction.
Net Gains on Non-marketable and Other Equity Securities	The following table presents the net gains and losses on non-marketable and other equity securities in 2019 , 2018 and 2017 as recorded in the line item “Gains on investment securities, net," a component of noninterest income: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Net gains (losses) on non-marketable and other equity securities: Non-marketable securities (fair value accounting): Consolidated venture capital and private equity fund investments $ 22,507 $ 20,999 $ 27,186 Unconsolidated venture capital and private equity fund investments (1) 31,482 39,075 21,377 Other investments without a readily determinable fair value (1) 2,742 3,206 3,842 Other equity securities in public companies (fair value accounting) (1) 7,772 (25,483 ) 241 Non-marketable securities (equity method accounting): Venture capital and private equity fund investments 73,813 49,341 14,472 Debt funds 1,647 541 8,950 Other investments (1,388 ) 1,155 (6,276 ) Total net gains on non-marketable and other equity securities $ 138,575 $ 88,834 $ 69,792 Less: Realized net gains (losses) on the sales and OTTI of non-marketable and other equity securities (2) 4,744 (26,097 ) (355 ) Net gains on non-marketable and other equity securities still held $ 133,831 $ 114,931 $ 70,147 (1) Presentation for year-ended December 31, 2017 amounts are not determined in a manner consistent with the December 31, 2018 and 2019 presentation due to the adoption of ASU 2016-01. (2) Realized gains and losses include sales and OTTI of non-marketable and other equity securities. Includes gains of $5.2 million on sales and $0.4 million of OTTI for the period ended December 31, 2019 . Includes losses of $20.8 million and gains of $3.8 million on sales and $5.3 million and $4.2 million of OTTI for the periods ended December 31, 2018 and 2017 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Gains on non-marketable and other equity securities, net $ 138,575 $ 88,834 $ 69,792 Losses on sales of available-for-sale debt securities, net (3,905 ) (740 ) (5,189 ) Total gains on investment securities, net $ 134,670 $ 88,094 $ 64,603

Loans, Allowance for Loan Los_2

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments (Tables)	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Loans and Allowance for Loan Losses	The composition of loans, net of unearned income of $163 million and $173 million at December 31, 2019 and 2018 , respectively, is presented in the following table: December 31, (Dollars in thousands) 2019 2018 Commercial loans: Software/internet $ 6,199,548 $ 6,154,755 Hardware 1,371,159 1,234,557 Private equity/venture capital 17,801,324 14,110,560 Life science/healthcare 2,368,048 2,385,612 Premium wine 267,487 249,266 Other 420,555 321,978 Total commercial loans 28,428,121 24,456,728 Real estate secured loans: Premium wine (1) 820,730 710,397 Consumer loans (2) 3,286,737 2,612,971 Other 38,880 40,435 Total real estate secured loans 4,146,347 3,363,803 Construction loans 100,219 97,077 Consumer loans 489,949 420,672 Total loans, net of unearned income (3) $ 33,164,636 $ 28,338,280 (1) Included in our premium wine portfolio are gross construction loans of $83 million and $99 million at December 31, 2019 and 2018 , respectively. (2) Consumer loans secured by real estate at December 31, 2019 and 2018 were comprised of the following: December 31, (Dollars in thousands) 2019 2018 Loans for personal residence $ 2,829,880 $ 2,251,292 Loans to eligible employees 401,396 290,194 Home equity lines of credit 55,461 71,485 Consumer loans secured by real estate $ 3,286,737 $ 2,612,971 (3) Included within our total loan portfolio are credit card loans of $395 million and $335 million at December 31, 2019 and 2018 , respectively.
Composition of Loans, Net of Unearned Income, Broken Out by Portfolio Segment and Class of Financing Receivable	The composition of loans, net of unearned income of $163 million and $173 million at December 31, 2019 and 2018 , respectively, broken out by portfolio segment and class of financing receivable, is as follows: December 31, (Dollars in thousands) 2019 2018 Commercial loans: Software/internet $ 6,199,548 $ 6,154,755 Hardware 1,371,159 1,234,557 Private equity/venture capital 17,801,324 14,110,560 Life science/healthcare 2,368,048 2,385,612 Premium wine 1,088,217 959,663 Other 559,654 459,490 Total commercial loans 29,387,950 25,304,637 Consumer loans: Real estate secured loans 3,286,737 2,612,971 Other consumer loans 489,949 420,672 Total consumer loans 3,776,686 3,033,643 Total loans, net of unearned income $ 33,164,636 $ 28,338,280
Aging of Gross Loans, Broken out by Portfolio Segment and Class of Financing Receivable	The following table summarizes the aging of our gross loans, broken out by portfolio segment and class of financing receivable as of December 31, 2019 and 2018 : (Dollars in thousands) 30 - 59 Days Past Due 60 - 89 Days Past Due Equal to or Greater Than 90 Days Past Due Total Past Due Current Loans Past Due 90 Days or More Still Accruing Interest December 31, 2019: Commercial loans: Software/internet $ 19,839 $ 4,225 $ — $ 24,064 $ 6,136,230 $ — Hardware 104 18,084 — 18,188 1,357,379 — Private equity/venture capital 97,893 383 3,150 101,426 17,715,964 3,150 Life science/healthcare 445 8,420 — 8,865 2,387,203 — Premium wine 7,543 — — 7,543 1,070,111 — Other 9 24 — 33 579,446 — Total commercial loans 125,833 31,136 3,150 160,119 29,246,333 3,150 Consumer loans: Real estate secured loans 6,282 — 365 6,647 3,271,318 365 Other consumer loans 164 283 — 447 489,831 — Total consumer loans 6,446 283 365 7,094 3,761,149 365 Total gross loans excluding impaired loans 132,279 31,419 3,515 167,213 33,007,482 3,515 Impaired loans 5,096 6,805 12,473 24,374 128,635 — Total gross loans $ 137,375 $ 38,224 $ 15,988 $ 191,587 $ 33,136,117 $ 3,515 December 31, 2018: Commercial loans: Software/internet $ 28,134 $ 6,944 $ 378 $ 35,456 $ 6,059,672 $ 378 Hardware 300 34 4 338 1,233,956 4 Private equity/venture capital 59,481 11 — 59,492 14,054,940 — Life science/healthcare 16,082 817 19 16,918 2,410,091 19 Premium wine 2,953 14 — 2,967 956,285 — Other 7,391 163 1 7,555 477,442 1 Total commercial loans 114,341 7,983 402 122,726 25,192,386 402 Consumer loans: Real estate secured loans 3,598 1,750 1,562 6,910 2,598,496 1,562 Other consumer loans 361 — — 361 420,359 — Total consumer loans 3,959 1,750 1,562 7,271 3,018,855 1,562 Total gross loans excluding impaired loans 118,300 9,733 1,964 129,997 28,211,241 1,964 Impaired loans 2,843 1,181 25,092 29,116 140,958 — Total gross loans $ 121,143 $ 10,914 $ 27,056 $ 159,113 $ 28,352,199 $ 1,964
Impaired Loans and Allowance for Loan Losses, Broken out by Portfolio Segment and Class of Financing Receivable	The following table summarizes our impaired loans as they relate to our allowance for loan losses, broken out by portfolio segment and class of financing receivable for the years ended December 31, 2019 and 2018 : (Dollars in thousands) Impaired loans for which there is a related allowance for loan losses Impaired loans for which there is no related allowance for loan losses Total carrying value of impaired loans Total unpaid principal of impaired loans December 31, 2019: Commercial loans: Software/internet $ 64,100 $ 31,472 $ 95,572 $ 109,736 Hardware 2,143 3,315 5,458 10,049 Private equity/venture capital — — — — Life science/healthcare 25,941 5,671 31,612 70,600 Premium wine 204 11,718 11,922 12,010 Other 1,284 1,681 2,965 3,114 Total commercial loans 93,672 53,857 147,529 205,509 Consumer loans: Real estate secured loans 1,766 3,714 5,480 8,527 Total consumer loans 1,766 3,714 5,480 8,527 Total $ 95,438 $ 57,571 $ 153,009 $ 214,036 December 31, 2018: Commercial loans: Software/internet $ 49,625 $ 65,225 $ 114,850 $ 131,858 Hardware 1,256 10,250 11,506 12,159 Private equity/venture capital — 3,700 3,700 3,700 Life science/healthcare 17,791 16,276 34,067 44,446 Premium wine — 1,301 1,301 1,365 Other 411 — 411 411 Total commercial loans 69,083 96,752 165,835 193,939 Consumer loans: Real estate secured loans 3,919 320 4,239 5,969 Total consumer loans 3,919 320 4,239 5,969 Total $ 73,002 $ 97,072 $ 170,074 $ 199,908
Average Impaired Loans, Broken out by Portfolio Segment and Class of Financing Receivable	The following table summarizes our average impaired loans and interest income recognized on impaired loans, broken out by portfolio segment and class of financing receivable during 2019 , 2018 and 2017 : Year ended December 31, (Dollars in thousands) Average impaired loans Interest income recognized on impaired loans 2019 2018 2017 2019 2018 2017 Commercial loans: Software/internet $ 88,628 $ 112,493 $ 119,557 $ 2,813 $ 1,513 $ 2,263 Hardware 12,500 28,540 35,022 464 312 1,061 Private equity/venture capital 2,264 1,327 556 — — — Life science/healthcare 44,827 30,144 30,842 919 756 90 Premium wine 2,912 2,605 3,249 311 68 152 Other 2,050 171 576 21 — — Total commercial loans 153,181 175,280 189,802 4,528 2,649 3,566 Consumer loans: Real estate secured loans 7,159 4,028 1,514 54 15 — Other consumer loans 7 358 1,804 — — — Total consumer loans 7,166 4,386 3,318 54 15 — Total average impaired loans $ 160,347 $ 179,666 $ 193,120 $ 4,582 $ 2,664 $ 3,566
Activity in Allowance for Loan Losses Broken out by Portfolio Segment	The following tables summarize the activity relating to our allowance for loan losses for 2019 , 2018 and 2017 broken out by portfolio segment: Year ended December 31, 2019 (Dollars in thousands) Beginning Balance December 31, 2018 Charge-offs Recoveries Provision for Loan Losses Foreign Currency Translation Adjustments Ending Balance December 31, 2019 Commercial loans: Software/internet $ 103,567 $ (46,930 ) $ 11,363 $ 31,766 $ 457 $ 100,223 Hardware 19,725 (10,056 ) 7,069 2,740 166 19,644 Private equity/venture capital 98,581 (2,047 ) 2,047 16,989 235 115,805 Life science/healthcare 32,180 (31,950 ) 267 38,178 570 39,245 Premium wine 3,355 (174 ) — 1,813 154 5,148 Other 3,558 (415 ) 36 328 (154 ) 3,353 Total commercial loans 260,966 (91,572 ) 20,782 91,814 1,428 283,418 Consumer loans 19,937 (1,031 ) 256 2,369 (25 ) 21,506 Total allowance for loan losses $ 280,903 $ (92,603 ) $ 21,038 $ 94,183 $ 1,403 $ 304,924 Year ended December 31, 2018 (Dollars in thousands) Beginning Balance December 31, 2017 Charge-offs Recoveries Provision for (Reduction of) Loan Losses Foreign Currency Translation Adjustments Ending Balance December 31, 2018 Commercial loans: Software/internet $ 96,104 $ (42,315 ) $ 5,664 $ 45,068 $ (954 ) $ 103,567 Hardware 27,614 (16,148 ) 1,849 6,555 (145 ) 19,725 Private equity/venture capital 82,468 (112 ) 13 16,485 (273 ) 98,581 Life science/healthcare 24,924 (6,662 ) 348 14,347 (777 ) 32,180 Premium wine 3,532 — — (182 ) 5 3,355 Other 3,941 (2,391 ) 3,275 (1,320 ) 53 3,558 Total commercial loans 238,583 (67,628 ) 11,149 80,953 (2,091 ) 260,966 Consumer loans 16,441 (289 ) 487 3,339 (41 ) 19,937 Total allowance for loan losses $ 255,024 $ (67,917 ) $ 11,636 $ 84,292 $ (2,132 ) $ 280,903 Year ended December 31, 2017 Beginning Balance December 31, 2016 Charge-offs Recoveries Provision for (Reduction of) Loan Losses Foreign Currency Translation Adjustments Ending Balance December 31, 2017 Commercial loans: Software/internet $ 97,388 $ (45,012 ) $ 4,649 $ 38,462 $ 617 $ 96,104 Hardware 31,166 (10,414 ) 487 6,051 324 27,614 Private equity/venture capital 50,299 (323 ) — 31,625 867 82,468 Life science/healthcare 25,446 (8,210 ) 189 7,414 85 24,924 Premium wine 4,115 — — (540 ) (43 ) 3,532 Other 4,768 (1,156 ) 1,850 (1,459 ) (62 ) 3,941 Total commercial loans 213,182 (65,115 ) 7,175 81,553 1,788 238,583 Consumer loans 12,184 (1,567 ) 1,363 4,386 75 16,441 Total allowance for loan losses $ 225,366 $ (66,682 ) $ 8,538 $ 85,939 $ 1,863 $ 255,024
Allowance for Unfunded Commitments	The following table summarizes the activity relating to our allowance for unfunded credit commitments for 2019 , 2018 and 2017 : Year ended December 31, (Dollars in thousands) 2019 2018 2017 Allowance for unfunded credit commitments, beginning balance $ 55,183 $ 51,770 $ 45,265 Provision for unfunded credit commitments 12,233 3,578 6,365 Foreign currency translation adjustments 240 (165 ) 140 Allowance for unfunded credit commitments, ending balance (1) $ 67,656 $ 55,183 $ 51,770 (1) The “allowance for unfunded credit commitments” is included as a component of “other liabilities” on our consolidated balance sheets. See Note 22—“Off-Balance Sheet Arrangements, Guarantees and Other Commitments” of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report for additional disclosures related to our commitments to extend credit.
Allowance for Loan Losses Individually and Collectively Evaluated for Impairment	The following table summarizes the allowance for loan losses individually and collectively evaluated for impairment as of December 31, 2019 and 2018 , broken out by portfolio segment: December 31, 2019 December 31, 2018 Individually Evaluated for Impairment Collectively Evaluated for Impairment Individually Evaluated for Impairment Collectively Evaluated for Impairment (Dollars in thousands) Allowance for loan losses Recorded investment in loans Allowance for loan losses Recorded investment in loans Allowance for loan losses Recorded investment in loans Allowance for loan losses Recorded investment in loans Commercial loans: Software/internet $ 26,613 $ 95,572 $ 73,610 $ 6,103,976 $ 28,527 $ 114,850 $ 75,040 $ 6,039,905 Hardware 1,214 5,458 18,430 1,365,701 1,253 11,506 18,472 1,223,051 Private equity/venture capital — — 115,805 17,801,324 — 3,700 98,581 14,106,860 Life science/healthcare 16,414 31,612 22,831 2,336,436 7,484 34,067 24,696 2,351,545 Premium wine 204 11,922 4,944 1,076,295 — 1,301 3,355 958,362 Other 203 2,965 3,150 556,689 411 411 3,147 459,079 Total commercial loans 44,648 147,529 238,770 29,240,421 37,675 165,835 223,291 25,138,802 Total consumer loans 211 5,480 21,295 3,771,206 266 4,239 19,671 3,029,404 Total $ 44,859 $ 153,009 $ 260,065 $ 33,011,627 $ 37,941 $ 170,074 $ 242,962 $ 28,168,206
Credit Quality Indicators, Broken out by Portfolio Segment and Class of Financing Receivables	The following table summarizes the credit quality indicators, broken out by portfolio segment and class of financing receivables as of December 31, 2019 and 2018 : (Dollars in thousands) Pass Performing (Criticized) Performing Impaired (Criticized) Nonperforming Impaired (Nonaccrual) Total December 31, 2019: Commercial loans: Software/internet $ 5,704,283 $ 456,011 $ 28,417 $ 67,155 $ 6,255,866 Hardware 1,266,077 109,490 3,315 2,143 1,381,025 Private equity/venture capital 17,813,128 4,262 — — 17,817,390 Life science/healthcare 2,197,679 198,389 5,211 26,401 2,427,680 Premium wine 1,053,021 24,633 11,717 205 1,089,576 Other 571,040 8,439 1,680 1,285 582,444 Total commercial loans 28,605,228 801,224 50,340 97,189 29,553,981 Consumer loans: Real estate secured loans 3,266,748 11,217 — 5,480 3,283,445 Other consumer loans 489,903 375 — — 490,278 Total consumer loans 3,756,651 11,592 — 5,480 3,773,723 Total gross loans $ 32,361,879 $ 812,816 $ 50,340 $ 102,669 $ 33,327,704 December 31, 2018: Commercial loans: Software/internet $ 5,574,332 $ 520,796 $ 48,069 $ 66,781 $ 6,209,978 Hardware 1,146,985 87,309 10,250 1,256 1,245,800 Private equity/venture capital 14,098,281 16,151 — 3,700 14,118,132 Life science/healthcare 2,291,356 135,653 16,276 17,791 2,461,076 Premium wine 909,965 49,287 1,017 284 960,553 Other 467,653 17,344 — 411 485,408 Total commercial loans 24,488,572 826,540 75,612 90,223 25,480,947 Consumer loans: Real estate secured loans 2,584,261 21,145 320 3,919 2,609,645 Other consumer loans 419,771 949 — — 420,720 Total consumer loans 3,004,032 22,094 320 3,919 3,030,365 Total gross loans $ 27,492,604 $ 848,634 $ 75,932 $ 94,142 $ 28,511,312
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 portfolio segment and class of financing receivables at December 31, 2019 and 2018 : December 31, (Dollars in thousands) 2019 2018 Loans modified in TDRs: Commercial loans: Software/internet $ 71,136 $ 58,089 Hardware 1,685 9,665 Life science/healthcare 20,600 12,738 Premium wine 13,457 2,883 Total commercial loans 106,878 83,375 Consumer loans: Other consumer loans 2,104 320 Total loans modified in TDRs $ 108,982 $ 83,695
Recorded Investment in Loans Modified in TDRs	The following table summarizes the recorded investment in loans modified in TDRs, broken out by portfolio segment and class of financing receivable, for modifications made during 2019 , 2018 and 2017 : Year ended December 31, (Dollars in thousands) 2019 2018 2017 Loans modified in TDRs during the period: Commercial loans: Software/internet $ 62,367 $ 30,429 $ 42,184 Hardware 1,685 9,665 51,132 Private equity/venture capital — — 350 Life science/healthcare 13,309 660 — Premium wine 11,017 — 177 Total commercial loans 88,378 40,754 93,843 Consumer loans: Other consumer loans 1,793 320 — Total loans modified in TDRs during the period (1) $ 90,171 $ 41,074 $ 93,843 (1) There were $11.3 million , $4.6 million and $3.0 million of partial charge-offs during 2019 , 2018 and 2017 , respectively.
Recorded Investment in Loans Modified in TDRs within Previous 12 months Subsequently Defaulted	The following table summarizes the recorded investment in loans modified in TDRs within the previous 12 months that subsequently defaulted during their respective periods, broken out by portfolio segment and class of financing receivable, during 2019 , 2018 and 2017 : December 31, (Dollars in thousands) 2019 2018 2017 TDRs modified within the previous 12 months that defaulted during the period: Commercial loans: Software/internet $ 37,294 $ — $ — Life science/healthcare 10,639 — — Total TDRs modified within the previous 12 months that defaulted in the period $ 47,933 $ — $ —

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
Premises and Equipment (Tables)	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Schedule of Premises and Equipment	Premises and equipment at December 31, 2019 and 2018 consisted of the following: December 31, (Dollars in thousands) 2019 2018 Computer software $ 261,643 $ 217,017 Computer hardware 82,643 70,247 Leasehold improvements 121,907 98,237 Furniture and equipment 46,300 42,319 Total 512,493 427,820 Accumulated depreciation and amortization (350,617 ) (298,607 ) Premises and equipment, net $ 161,876 $ 129,213

Leases (Tables)

Leases (Tables)	12 Months Ended
Leases (Tables)	Dec. 31, 2019
Leases [Abstract]
Schedule of Lease Assets And Liabilities	Total recorded balances for the lease assets and liabilities are as follows: (Dollars in thousands) December 31, 2019 Assets: Right-of-use assets - operating leases (1) $ 197,365 Liabilities: Lease liabilities - operating leases (1) 218,847 (1) Included in these amounts are $21.7 million and $30.0 million of ROU assets and lease liabilities, respectively, attributable to the inclusion of SVB Leerink in our financial results at December 31, 2019 .
Lease Expense Components	The components of our lease cost and supplemental cash flow information related to leases for the year ended December 31, 2019 were as follows: (Dollars in thousands) 2019 Operating lease cost $ 41,049 Short-term lease cost 1,823 Variable lease cost 3,477 Less: sublease income (4,492 ) Total lease expense, net $ 41,857 Supplemental cash flows information: Cash paid for amounts included in the measurement of lease liabilities: Cash paid for operating leases $ 44,976 Noncash items during the period: Lease obligations in exchange for obtaining right-of-use assets: Operating leases $ 33,167
Lessee, Operating Lease, Liability, Maturity	The following table presents our undiscounted future cash payments for our operating lease liabilities as of December 31, 2019 : Years ended December 31, (Dollars in thousands) Operating Leases 2020 $ 44,791 2021 42,683 2022 37,669 2023 36,914 2024 26,602 2025 and thereafter 52,128 Total lease payments (1) $ 240,787 Less: imputed interest (21,940 ) Total lease liabilities $ 218,847 (1) As of December 31, 2019 , we have additional leases that have not yet commenced. We estimate that we will record additional lease liabilities of $29.1 million upon commencement. These leases will commence in 2020 with lease terms of two to five years .
Schedule of Future Minimum Rental Payments for Operating Leases	The following table presents minimum future payments under noncancelable operating leases under ASC 840 as of December 31, 2018: (Dollars in thousands) Amount 2019 $ 38,609 2020 37,575 2021 35,854 2022 31,659 2023 30,904 2024 and thereafter 49,071 Total minimum future payments $ 223,672

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
Goodwill and Other Intangible Assets (Tables)	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The changes in goodwill were as follows for the year ended December 31, 2019 : (Dollars in thousands) Goodwill Beginning balance at December 31, 2018 $ — Acquisitions (1) 137,823 Ending balance at December 31, 2019 $ 137,823 (1) 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 25—“Segment Reporting” of the “Notes to the Consolidated Financial Statements” under Part II, Item 8 of this report for additional information.
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination	The following table summarizes the fair value and estimated useful lives of the other intangible assets at the date of acquisition: (Dollars in thousands) Estimated Fair Value Weighted Average Estimated Useful Life - in Years Other intangible assets: Customer relationships $ 42,000 11.0 Other 18,900 9.9 Total other intangible assets $ 60,900 The components of net other intangible assets related to the acquisition of SVB Leerink were as follows: December 31, 2019 (Dollars in thousands) Gross Amount Accumulated Amortization Net Carrying Amount Other intangible assets: Customer relationships $ 42,000 $ 3,818 $ 38,182 Other 18,900 7,665 11,235 Total other intangible assets $ 60,900 $ 11,483 $ 49,417
Finite-lived Intangible Assets Amortization Expense	For the year ended December 31, 2019 , we recorded amortization expense of $11.5 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 December 31, 2019 : Years ended December 31, (Dollars in thousands) Other Intangible Assets 2020 $ 5,382 2021 4,732 2022 4,732 2023 4,732 2024 4,732 2025 and thereafter 25,107 Total future amortization expense $ 49,417

Deposits (Tables)

Deposits (Tables)	12 Months Ended
Deposits (Tables)	Dec. 31, 2019
Deposits [Abstract]
Composition of Deposits	The following table presents the composition of our deposits at December 31, 2019 and 2018 : December 31, (Dollars in thousands) 2019 2018 Noninterest-bearing demand $ 40,841,570 $ 39,103,422 Interest-bearing checking and savings accounts 568,256 648,468 Money market 17,749,736 7,498,205 Money market deposits in foreign offices 352,437 152,781 Sweep deposits in foreign offices 2,057,715 1,875,298 Time 188,093 50,726 Total deposits $ 61,757,807 $ 49,328,900

Short-Term Borrowings and Lon_2

Short-Term Borrowings and Long-Term Debt (Tables)	12 Months Ended
Short-Term Borrowings and Long-Term Debt (Tables)	Dec. 31, 2019
Debt Disclosure [Abstract]
Outstanding Short Term Borrowings and Long Term Debt	The following table represents outstanding short-term borrowings and long-term debt at December 31, 2019 and 2018 : Carrying Value (Dollars in thousands) Maturity Principal value at December 31, 2019 December 31, December 31, Short-term borrowings: Short-term FHLB advances $ — $ 300,000 Securities sold under agreement to repurchase (1) — 319,414 Other short-term borrowings (2) $ 17,430 17,430 11,998 Total short-term borrowings $ 17,430 $ 631,412 Long-term debt: 3.50% Senior Notes January 29, 2025 $ 350,000 $ 347,987 $ 347,639 5.375% Senior Notes — 348,826 Total long-term debt $ 347,987 $ 696,465 (1) Securities sold under repurchase agreements are effectively short-term borrowings collateralized by U.S. Treasury securities. (2) Represents cash collateral received from certain counterparties in relation to market value exposures of derivative contracts in our favor.
Aggregate Annual Maturities of Long-Term Debt Obligations	The aggregate annual maturities of long-term debt obligations as of December 31, 2019 are as follows: Year ended December 31, (Dollars in thousands) Amount 2020 $ — 2021 — 2022 — 2023 — 2024 — 2025 and thereafter 347,987 Total $ 347,987

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	12 Months Ended
Derivative Financial Instruments (Tables)	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
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 December 31, 2019 and 2018 were as follows: December 31, 2019 December 31, 2018 Notional or Contractual Amount Fair Value Notional or Contractual Amount 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 — — — 263,733 4,767 — Foreign exchange forwards 300,250 — 2,154 178,310 — 1,094 Other derivative instruments: Equity warrant assets 225,893 165,473 — 223,532 149,238 — Client foreign exchange forwards 4,661,517 114,546 — 2,759,878 93,876 — Client foreign exchange forwards 4,326,059 — 94,745 2,568,085 — 85,706 Client foreign currency options 154,985 1,308 — 93,556 1,759 — Client foreign currency options 154,985 — 1,308 93,579 — 1,759 Client interest rate derivatives (2) 1,275,190 28,811 — 1,020,416 8,499 — Client interest rate derivatives (2) 1,372,914 — 14,154 1,337,328 — 9,491 Total Derivatives not designated as hedging instruments 310,138 112,361 258,139 98,050 Total derivatives $ 332,814 $ 137,984 $ 258,139 $ 98,050 (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 $17.4 million of derivative liabilities and $0.4 million of derivative assets at December 31, 2019 and 2018 , 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 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) Statement of income location 2019 2018 2017 Derivatives designated as hedging instruments: Interest rate risks: Amounts reclassified from accumulated other comprehensive income into income Interest income—loans $ (5,358 ) $ — $ — Net cash benefit associated with interest rate swaps Interest expense—borrowings — — 1,053 Changes in fair value of interest rate swaps Other noninterest income — — (7 ) Net (losses) gains associated with interest rate risk derivatives $ (5,358 ) $ — $ 1,046 Derivatives not designated as hedging instruments: Currency exchange risks: Gains (losses) on revaluations of internal foreign currency instruments, net Other noninterest income $ 1,444 $ (373 ) $ 33,161 (Losses) gains on internal foreign exchange forward contracts, net Other noninterest income (1,853 ) 52 (32,286 ) Net (losses) gains associated with internal currency risk $ (409 ) $ (321 ) $ 875 Other derivative instruments: (Losses) gains on revaluations of client foreign currency instruments, net Other noninterest income $ (15,146 ) $ 4,998 $ 10,882 Gains (losses) on client foreign exchange forward contracts, net Other noninterest income 15,900 (4,011 ) (9,969 ) Net gains associated with client currency risk $ 754 $ 987 $ 913 Net gains on equity warrant assets Gains on equity warrant assets, net $ 138,078 $ 89,142 $ 54,555 Net losses on other derivatives Other noninterest income $ (1,190 ) $ (179 ) $ (564 )
Offsetting Assets	The following table summarizes our assets subject to enforceable master netting arrangements as of December 31, 2019 and 2018 : (Dollars in thousands) 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 Financial Instruments Cash Collateral Received (1) 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 December 31, 2018: Derivative Assets: Foreign exchange forwards $ 98,643 $ — $ 98,643 $ (38,213 ) $ (11,825 ) $ 48,605 Foreign currency options 1,759 — 1,759 (613 ) (90 ) 1,056 Client interest rate derivatives 8,499 — 8,499 (8,416 ) (83 ) — Total derivative assets: 108,901 — 108,901 (47,242 ) (11,998 ) 49,661 Reverse repurchase, securities borrowing, and similar arrangements 123,611 — 123,611 (123,611 ) — — Total $ 232,512 $ — $ 232,512 $ (170,853 ) $ (11,998 ) $ 49,661 (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 December 31, 2019 and 2018 : (Dollars in thousands) 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 Financial Instruments Cash Collateral Pledged (1) 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 December 31, 2018: Derivative Liabilities: Foreign exchange forwards $ 86,800 $ — $ 86,800 $ (24,778 ) $ (20,732 ) $ 41,290 Foreign currency options 1,759 — 1,759 (1,054 ) — 705 Client interest rate derivatives 9,491 — 9,491 — (9,207 ) 284 Total derivative liabilities: 98,050 — 98,050 (25,832 ) (29,939 ) 42,279 Repurchase, securities lending, and similar arrangements 319,414 — 319,414 — — 319,414 Total $ 417,464 $ — $ 417,464 $ (25,832 ) $ (29,939 ) $ 361,693 (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)	12 Months Ended
Noninterest Income (Tables)	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Summary of Noninterest Income	A summary of noninterest income for the years ended December 31, 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Noninterest income: Gains on investment securities, net $ 134,670 $ 88,094 $ 64,603 Gains on equity warrant assets, net 138,078 89,142 54,555 Client investment fees 182,068 130,360 56,136 Foreign exchange fees 159,262 138,812 115,760 Credit card fees 118,719 94,072 76,543 Deposit service charges 89,200 76,097 58,715 Lending related fees 49,920 41,949 43,265 Letters of credit and standby letters of credit fees 42,669 34,600 28,544 Investment banking revenue 195,177 — — Commissions 56,346 — — Other 55,370 51,858 59,110 Total noninterest income $ 1,221,479 $ 744,984 $ 557,231
Summary of Gains and Losses on Investment Securities	The following table presents the net gains and losses on non-marketable and other equity securities in 2019 , 2018 and 2017 as recorded in the line item “Gains on investment securities, net," a component of noninterest income: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Net gains (losses) on non-marketable and other equity securities: Non-marketable securities (fair value accounting): Consolidated venture capital and private equity fund investments $ 22,507 $ 20,999 $ 27,186 Unconsolidated venture capital and private equity fund investments (1) 31,482 39,075 21,377 Other investments without a readily determinable fair value (1) 2,742 3,206 3,842 Other equity securities in public companies (fair value accounting) (1) 7,772 (25,483 ) 241 Non-marketable securities (equity method accounting): Venture capital and private equity fund investments 73,813 49,341 14,472 Debt funds 1,647 541 8,950 Other investments (1,388 ) 1,155 (6,276 ) Total net gains on non-marketable and other equity securities $ 138,575 $ 88,834 $ 69,792 Less: Realized net gains (losses) on the sales and OTTI of non-marketable and other equity securities (2) 4,744 (26,097 ) (355 ) Net gains on non-marketable and other equity securities still held $ 133,831 $ 114,931 $ 70,147 (1) Presentation for year-ended December 31, 2017 amounts are not determined in a manner consistent with the December 31, 2018 and 2019 presentation due to the adoption of ASU 2016-01. (2) Realized gains and losses include sales and OTTI of non-marketable and other equity securities. Includes gains of $5.2 million on sales and $0.4 million of OTTI for the period ended December 31, 2019 . Includes losses of $20.8 million and gains of $3.8 million on sales and $5.3 million and $4.2 million of OTTI for the periods ended December 31, 2018 and 2017 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Gains on non-marketable and other equity securities, net $ 138,575 $ 88,834 $ 69,792 Losses on sales of available-for-sale debt securities, net (3,905 ) (740 ) (5,189 ) Total gains on investment securities, net $ 134,670 $ 88,094 $ 64,603
Components of Gains on Equity Warrant Assets	A summary of net gains on equity warrant assets for 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Equity warrant assets: Gains on exercises, net $ 107,168 $ 58,186 $ 48,275 Terminations (3,502 ) (5,964 ) (4,422 ) Changes in fair value, net 34,412 36,920 10,702 Total net gains on equity warrant assets $ 138,078 $ 89,142 $ 54,555
Components of Asset Management Fees	A summary of client investment fees by instrument type for 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Client investment fees by type: Sweep money market fees $ 104,236 $ 75,654 $ 28,485 Asset management fees (1) 28,665 23,882 16,831 Repurchase agreement fees 49,167 30,824 10,820 Total client investment fees (2) $ 182,068 $ 130,360 $ 56,136 (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 which 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 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Foreign exchange fees by instrument type: Spot contract commissions $ 145,915 $ 127,459 $ 104,344 Forward contract commissions 13,068 10,940 10,934 Option premium fees 279 413 482 Total foreign exchange fees $ 159,262 $ 138,812 $ 115,760
Components of Credit Card Fees	A summary of credit card fees by instrument type for 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Credit card fees by instrument type: Card interchange fees, net $ 93,553 $ 74,381 $ 60,224 Merchant service fees 18,355 14,420 11,584 Card service fees 6,811 5,271 4,735 Total credit card fees $ 118,719 $ 94,072 $ 76,543
Components of Lending Related Fees	A summary of lending related fees by instrument type for 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Lending related fees by instrument type: Unused commitment fees $ 34,829 $ 32,452 $ 34,110 Other 15,091 9,497 9,155 Total lending related fees $ 49,920 $ 41,949 $ 43,265
Schedule of Investment Banking Revenue	A summary of investment banking revenue by instrument type for 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Investment banking revenue: Underwriting fees $ 153,306 $ — $ — Advisory fees 37,846 — — Private placements and other 4,025 — — Total investment banking revenue $ 195,177 $ — $ —
Summary of Other Noninterest Income	A summary of other noninterest income by instrument type for 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Other noninterest income by instrument type: Fund management fees $ 32,522 $ 23,016 $ 21,214 Net gains on revaluation of foreign currency instruments, net of foreign exchange forward contracts (1) 345 666 1,788 (Losses) gains on extinguishment of debt (8,960 ) — 2,731 Other service revenue 31,463 28,176 33,377 Total other noninterest income $ 55,370 $ 51,858 $ 59,110 (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 years ended December 31, 2019 and 2018 : (Dollars in thousands) Global Commercial Bank (2) SVB Private Bank SVB Capital (2) SVB Leerink (2) Other Income Total Revenue from contracts with customers: Client investment fees $ 180,152 $ 1,916 $ — $ — $ — $ 182,068 Spot contract commissions 144,930 510 — — 475 145,915 Card interchange fees, gross 154,197 — — — 756 154,953 Merchant service fees 18,355 — — — — 18,355 Deposit service charges 88,136 137 — — 927 89,200 Investment banking revenue — — — 195,177 — 195,177 Commissions — — — 56,346 — 56,346 Fund management fees — — 26,850 5,672 — 32,522 Correspondent bank rebates 6,415 — — — — 6,415 Total revenue from contracts with customers $ 592,185 $ 2,563 $ 26,850 $ 257,195 $ 2,158 $ 880,951 Revenues outside the scope of ASC 606 (1) 45,737 803 95,544 7,321 191,123 340,528 Total noninterest income $ 637,922 $ 3,366 $ 122,394 $ 264,516 $ 193,281 $ 1,221,479 (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." (Dollars in thousands) Global Commercial Bank (2) SVB Private Bank SVB Capital (2) Other Income Total Revenue from contracts with customers: Client investment fees (3) $ 128,834 $ 1,526 $ — $ — $ 130,360 Spot contract commissions 126,445 691 — 323 127,459 Card interchange fees, gross 134,074 — — 428 134,502 Merchant service fees 14,415 4 — 1 14,420 Deposit service charges 74,348 108 — 1,641 76,097 Fund management fees — — 23,016 — 23,016 Correspondent bank rebates 5,802 — — — 5,802 Total revenue from contracts with customers $ 483,918 $ 2,329 $ 23,016 $ 2,393 $ 511,656 Revenues outside the scope of ASC 606 (1) 36,384 (48 ) 78,165 118,827 233,328 Total noninterest income $ 520,302 $ 2,281 $ 101,181 $ 121,220 $ 744,984 (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." (3) For the year ended December 31, 2018, the amount of client investment fees previously reported as "Other Items" has been correctly allocated to the reportable segment "Global Commercial Bank" to properly reflect the source of such revenue. The correction of this immaterial error had no impact on the "Total" amount of client investment fees.

Other Noninterest Expense (Tabl

Other Noninterest Expense (Tables)	12 Months Ended
Other Noninterest Expense (Tables)	Dec. 31, 2019
Other Income and Expenses [Abstract]
Schedule of Other Noninterest Expense	A summary of other noninterest expense for 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Lending and other client related processing costs $ 28,491 $ 24,237 $ 23,768 Correspondent bank fees 14,503 13,713 12,976 Investment banking activities 13,733 — — Trade order execution costs 10,813 — — Data processing services 12,536 10,811 10,251 Telephone 9,861 9,404 10,647 Dues and publications 4,603 4,605 3,263 Postage and supplies 3,198 2,799 2,797 Other 54,841 21,682 21,419 Total other noninterest expense $ 152,579 $ 87,251 $ 85,121

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Components of Provision for Income Taxes	The components of our provision for income taxes for 2019 , 2018 and 2017 were as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Current provision: Federal $ 296,400 $ 249,358 $ 263,231 State 132,357 123,264 67,046 Deferred (benefit) expense: Federal (1,530 ) (11,777 ) 24,654 State (1,542 ) (9,284 ) 532 Income tax expense $ 425,685 $ 351,561 $ 355,463
Reconciliation between Federal Statutory Income Tax Rate and Effective Income Tax Rate	Our effective tax rate is calculated by dividing income tax expense by the sum of income before income tax expense and the net income attributable to noncontrolling interests. The reconciliation between the federal statutory income tax rate and our effective income tax rate for 2019 , 2018 and 2017 , is as follows: December 31, (Dollars in thousands) 2019 2018 2017 Federal statutory income tax rate 21.0 % 21.0 % 35.0 % State income taxes, net of the federal tax effect 7.0 7.2 5.8 Net deferred tax assets revaluation (TCJ Act) — — 4.3 Meals and entertainment 0.4 0.3 0.3 Disallowed officers' compensation 0.2 0.2 0.1 FDIC premiums 0.2 0.5 — Share-based compensation expense on incentive stock options and ESPP (0.6 ) (1.4 ) (2.1 ) Qualified affordable housing project tax credits (0.3 ) (0.3 ) (0.4 ) Tax-exempt interest income (0.6 ) (0.6 ) (0.3 ) Other, net (0.1 ) (0.4 ) (0.7 ) Effective income tax rate 27.2 % 26.5 % 42.0 %
Deferred Tax Assets (Liabilities)	Deferred tax assets and liabilities at December 31, 2019 and 2018 , consisted of the following: December 31, (Dollars in thousands) 2019 2018 Deferred tax assets: Allowance for loan losses $ 103,267 $ 93,580 Net unrealized losses on AFS debt securities — 19,704 Share-based compensation expense 14,233 10,642 State income taxes 16,097 13,854 Accrued compensation 22,578 8,291 Deferred rent — 7,940 Lease liability 60,635 — Other accruals 12,383 7,061 Net operating loss 6,386 2,447 Goodwill and intangibles 3,141 — Other 7,923 11,339 Deferred tax assets 246,643 174,858 Valuation allowance (5,919 ) (2,107 ) Net deferred tax assets after valuation allowance 240,724 172,751 Deferred tax liabilities: Derivative equity warrant assets (45,533 ) (32,861 ) Change in accounting method (section 481(a)) (1,841 ) (8,034 ) Net unrealized gains on AFS debt securities (33,480 ) — Non-marketable and other equity securities (54,239 ) (45,759 ) Premises and equipment and other intangibles (16,459 ) (10,284 ) Right-of-use asset and deferred rent assets (50,493 ) — Other (10,246 ) (10,380 ) Deferred tax liabilities (212,291 ) (107,318 ) Net deferred tax assets $ 28,433 $ 65,433
Changes in Unrecognized Tax Benefit (Including Interest and Penalties)	A summary of changes in our unrecognized tax benefit (including interest and penalties) for December 31, 2019 , 2018 and 2017 is as follows: (Dollars in thousands) Reconciliation of Unrecognized Tax Benefit Interest and Penalties Total Balance at December 31, 2016 $ 5,269 $ 442 $ 5,711 Additions for tax positions for current year 3,141 — 3,141 Additions for tax positions for prior years 3,378 754 4,132 Reduction for tax positions for prior years (223 ) (1 ) (224 ) Lapse of the applicable statute of limitations (60 ) (17 ) (77 ) Balance at December 31, 2017 $ 11,505 $ 1,178 $ 12,683 Additions for tax positions for current year 4,171 — 4,171 Additions for tax positions for prior years 631 823 1,454 Reduction for tax positions for prior years (1,865 ) (243 ) (2,108 ) Lapse of the applicable statute of limitations (435 ) (86 ) (521 ) Reduction as a result of settlement (1,318 ) (222 ) (1,540 ) Balance at December 31, 2018 $ 12,689 $ 1,450 $ 14,139 Additions for tax positions for current year 3,712 — 3,712 Additions for tax positions for prior years 63 826 889 Reduction for tax positions for prior years (884 ) (524 ) (1,408 ) Lapse of the applicable statute of limitations (1,826 ) (569 ) (2,395 ) Reduction as a result of settlement (1,142 ) $ (17 ) $ (1,159 ) Balance at December 31, 2019 $ 12,612 $ 1,166 $ 13,778

Employee Compensation and Ben_2

Employee Compensation and Benefit Plans (Tables)	12 Months Ended
Employee Compensation and Benefit Plans (Tables)	Dec. 31, 2019
Retirement Benefits [Abstract]
Summary of Expenses Incurred Under Certain Employee Compensation and Benefit Plans	A summary of expenses incurred under certain employee compensation and benefit plans for 2019 , 2018 and 2017 is as follows: Year ended December 31, (Dollars in thousands) 2019 2018 2017 Incentive Compensation Plan $ 143,888 $ 160,293 $ 125,584 Direct Drive Incentive Compensation Plan 37,315 40,578 18,721 Retention Program 2,438 1,438 1,317 Warrant Incentive Plan 14,881 9,112 15,386 Deferred Compensation Plan — — 203 SVBFG 401(k) Plan 25,687 21,323 17,860 SVBFG ESOP 4,197 6,435 4,719 SVB Leerink Incentive Compensation Plan 106,871 — — SVB Leerink Retention Award 12,015 — —

Off-Balance Sheet Arrangement_2

Off-Balance Sheet Arrangements, Guarantees and Other Commitments (Tables)	12 Months Ended
	Dec. 31, 2019
Other Commitments [Line Items]
Summary of Commercial and Standby Letters of Credit	The table below summarizes our commercial and standby letters of credit at December 31, 2019 . 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 Year or Less Expires After One Year Total Amount Outstanding Maximum Amount of Future Payments Financial standby letters of credit $ 2,566,623 $ 79,207 $ 2,645,830 $ 2,645,830 Performance standby letters of credit 105,993 19,618 125,611 125,611 Commercial letters of credit 7,120 — 7,120 7,120 Total $ 2,679,736 $ 98,825 $ 2,778,561 $ 2,778,561
Commitments to extend credit
Other Commitments [Line Items]
Summary Information Related to Commitments	The following table summarizes information related to our commitments to extend credit at December 31, 2019 and 2018 , respectively: December 31, (Dollars in thousands) 2019 2018 Loan commitments available for funding: (1) Fixed interest rate commitments $ 2,434,042 $ 1,839,190 Variable interest rate commitments 19,309,317 14,821,815 Total loan commitments available for funding 21,743,359 16,661,005 Commercial and standby letters of credit (2) 2,778,561 2,252,016 Total unfunded credit commitments $ 24,521,920 $ 18,913,021 Commitments unavailable for funding (3) $ 3,051,075 $ 2,723,835 Allowance for unfunded credit commitments (4) 67,656 55,183 (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 unfunded credit commitments includes an allowance for both our unfunded loan commitments and our letters of credit.
Commitments to invest in venture capital and equity funds
Other Commitments [Line Items]
Summary Information Related to Commitments	The following table details our total capital commitments, unfunded capital commitments, and our ownership percentage in each fund at December 31, 2019 : (Dollars in thousands) SVBFG Capital Commitments SVBFG Unfunded Commitments SVBFG Ownership of each Fund (3) 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) 21,801 5,732 Various Debt funds (equity method accounting) 58,493 — Various Other fund investments (2) 284,758 6,119 Various Total $ 467,664 $ 19,092 (1) Our ownership includes direct ownership of 1.3 percent and indirect ownership of 3.8 percent through our investment in Strategic Investors Fund II, LP. (2) Represents commitments to 211 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 or limits us from sponsoring or having ownership interests in “covered” funds including venture capital and private equity funds. See “Business - Supervision and Regulation” under Part I, Item 1 of this report. 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 December 31, 2019 : (Dollars in thousands) Unfunded Commitments Strategic Investors Fund, LP $ 1,338 Capital Preferred Return Fund, LP 1,540 Growth Partners, LP 2,468 Total $ 5,346

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	12 Months Ended
Fair Value of Financial Instruments (Tables)	Dec. 31, 2019
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 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 — f ixed 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 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, 2018 : (Dollars in thousands) Level 1 Level 2 Level 3 Balance at December 31, 2018 Assets Available-for-sale securities: U.S. Treasury securities $ 4,738,258 $ — $ — $ 4,738,258 U.S. agency debentures — 1,084,117 — 1,084,117 Foreign government debt securities 5,812 — — 5,812 Residential mortgage-backed securities: Agency-issued collateralized mortgage obligations— fixed rate — 1,880,218 — 1,880,218 Agency-issued collateralized mortgage obligations— variable rate — 81,638 — 81,638 Total available-for-sale securities 4,744,070 3,045,973 — 7,790,043 Non-marketable and other equity securities (fair value accounting): Non-marketable securities: Venture capital and private equity fund investments measured at net asset value — — — 318,352 Venture capital and private equity fund investments not measured at net asset value (1) — — 1,079 1,079 Other equity securities in public companies (1) 1,181 19,217 — 20,398 Total non-marketable and other equity securities (fair value accounting) 1,181 19,217 1,079 339,829 Other assets: Foreign exchange forward and option contracts — 100,402 — 100,402 Equity warrant assets — 4,039 145,199 149,238 Client interest rate derivatives — 8,499 — 8,499 Total assets $ 4,745,251 $ 3,178,130 $ 146,278 $ 8,388,011 Liabilities Foreign exchange forward and option contracts $ — $ 88,559 $ — $ 88,559 Client interest rate derivatives — 9,491 — 9,491 Total liabilities $ — $ 98,050 $ — $ 98,050 (1) Included in Level 3 assets is $964 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 2019 , 2018 and 2017 , respectively: (Dollars in thousands) Beginning Balance Total Realized and Unrealized Gains, net Included in Income Purchases Sales/Exits Issuances Distributions and Other Settlements Transfers Out of Level 3 Ending Balance Year ended December 31, 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) 145,199 133,910 575 (130,392 ) 16,453 — (4,707 ) 161,038 Total assets $ 146,278 $ 133,922 $ 575 $ (131,352 ) $ 16,453 $ 3 $ (4,707 ) $ 161,172 Year ended December 31, 2018: Non-marketable and other equity securities (fair value accounting): Venture capital and private equity fund investments not measured at net asset value (1) $ 919 $ 457 $ — $ — $ — $ (297 ) $ — $ 1,079 Other assets: Equity warrant assets (2) 121,331 87,982 — (78,752 ) 17,941 — (3,303 ) 145,199 Total assets $ 122,250 $ 88,439 $ — $ (78,752 ) $ 17,941 $ (297 ) $ (3,303 ) $ 146,278 Year ended December 31, 2017: Non-marketable and other equity securities (fair value accounting): Venture capital and private equity fund investments not measured at net asset value (1) $ 2,040 $ 971 $ — $ (2,092 ) $ — $ — $ — $ 919 Other assets: Equity warrant assets (2) 128,813 54,263 — (74,769 ) 14,537 — (1,513 ) 121,331 Total assets $ 130,853 $ 55,234 $ — $ (76,861 ) $ 14,537 $ — $ (1,513 ) $ 122,250 (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 unrealized gains (losses) included in earnings (which is inclusive of noncontrolling interest) attributable to Level 3 assets still held at December 31, 2019 and 2018 , respectively: Year ended December 31, (Dollars in thousands) 2019 2018 Non-marketable and other equity securities (fair value accounting): Venture capital and private equity fund investments not measured at net asset value (1) $ (222 ) $ 160 Other assets: Equity warrant assets (2) 34,691 37,564 Total unrealized gains, net $ 34,469 $ 37,724 Unrealized (losses) gains attributable to noncontrolling interests (1) $ (199 ) $ 143 (1) Unrealized gains are recorded in the line item “Gains on investment securities, net,” a component of noninterest income. (2) Unrealized gains 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 December 31, 2019 and 2018 . 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 Weighted Average December 31, 2019: Venture capital and private equity fund investments (fair value accounting) $ 134 Private company equity pricing (1) (1) Equity warrant assets (public portfolio) 346 Black-Scholes option pricing model Volatility 50.7 % Risk-Free interest rate 1.9 Sales restrictions discount (2) 13.6 Equity warrant assets (private portfolio) 160,692 Black-Scholes option pricing model Volatility 38.2 Risk-Free interest rate 1.6 Marketability discount (3) 17.5 Remaining life assumption (4) 45.0 December 31, 2018: Venture capital and private equity fund investments (fair value accounting) $ 1,079 Private company equity pricing (1) (1) Equity warrant assets (public portfolio) 2,757 Black-Scholes option pricing model Volatility 54.7 % Risk-Free interest rate 2.6 Sales restrictions discount (2) 18.5 Equity warrant assets (private portfolio) 142,442 Black-Scholes option pricing model Volatility 38.5 Risk-Free interest rate 2.5 Marketability discount (3) 17.7 Remaining life assumption (4) 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 to six months . (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 December 31, 2019 , the weighted average contractual remaining term was 6.1 years, compared to our estimated remaining life of 2.8
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 December 31, 2019 and 2018 : Estimated Fair Value (Dollars in thousands) Carrying Amount Total Level 1 Level 2 Level 3 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 December 31, 2018: Financial assets: Cash and cash equivalents $ 3,571,539 $ 3,571,539 $ 3,571,539 $ — $ — Held-to-maturity securities 15,487,442 15,188,236 — 15,188,236 — Non-marketable securities not measured at net asset value 131,453 131,453 — — 131,453 Non-marketable securities measured at net asset value 151,247 151,247 — — — Net commercial loans 25,043,671 25,463,968 — — 25,463,968 Net consumer loans 3,013,706 3,064,093 — — 3,064,093 FHLB and Federal Reserve Bank stock 58,878 58,878 — — 58,878 Financial liabilities: Short-term borrowings 631,412 631,412 — 631,412 — Non-maturity deposits (1) 49,278,174 49,278,174 49,278,174 — — Time deposits 50,726 50,337 — 50,337 — 3.50% Senior Notes 347,639 336,088 — 336,088 — 5.375% Senior Notes 348,826 361,281 — 361,281 — Off-balance sheet financial assets: Commitments to extend credit — 22,930 — — 22,930 (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 December 31, 2019 : (Dollars in thousands) Carrying Amount Fair Value Unfunded Commitments Non-marketable securities (fair value accounting): Venture capital and private equity fund investments (1) $ 265,263 $ 265,263 $ 10,579 Non-marketable securities (equity method accounting): Venture capital and private equity fund investments (2) 215,367 215,367 10,675 Debt funds (2) 7,271 7,271 — Other investments (2) 12,713 12,713 886 Total $ 500,614 $ 500,614 $ 22,140 (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 $64.6 million and $4.0 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.

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
Regulatory Matters (Tables)	Dec. 31, 2019
Banking and Thrift [Abstract]
Capital Ratios for Company and Bank under Federal Regulatory Guidelines, Compared to Minimum Regulatory Capital Requirements for Adequately Capitalized and Well Capitalized Depository Institution	The following table presents the capital ratios for the Company and the Bank under federal regulatory guidelines, compared to the minimum regulatory capital requirements, as of December 31, 2019 and 2018 : Capital Ratios Capital Amounts (Dollars in thousands) Actual Required Minimum (1) Well Capitalized Minimum Actual Required Minimum (1) Well Capitalized Minimum December 31, 2019: CET 1 risk-based capital: SVB Financial 12.58 % 7.0 % N/A $ 5,857,744 $ 3,260,424 N/A Bank 11.12 7.0 6.5 4,949,393 3,115,151 $ 2,892,640 Tier 1 risk-based capital: SVB Financial 13.43 8.5 6.0 6,257,442 3,959,086 2,794,649 Bank 11.12 8.5 8.0 4,949,393 3,782,683 3,560,172 Total risk-based capital: SVB Financial 14.23 10.5 10.0 6,630,022 4,890,636 4,657,748 Bank 11.96 10.5 10.0 5,321,850 4,672,726 4,450,215 Tier 1 leverage: SVB Financial 9.06 4.0 N/A 6,257,442 2,763,146 N/A Bank 7.30 4.0 5.0 4,949,393 2,713,367 3,391,709 December 31, 2018: CET 1 risk-based capital: SVB Financial 13.41 % 6.4 % N/A $ 5,167,270 $ 2,456,151 N/A Bank 12.41 6.4 6.5 4,604,689 2,365,385 $ 2,411,765 Tier 1 risk-based capital: SVB Financial 13.58 7.9 6.0 5,231,476 3,034,068 2,311,671 Bank 12.41 7.9 8.0 4,604,689 2,921,946 2,968,326 Total risk-based capital: SVB Financial 14.45 9.9 10.0 5,567,562 3,804,625 3,852,785 Bank 13.32 9.9 10.0 4,940,776 3,664,028 3,710,408 Tier 1 leverage: SVB Financial 9.06 4.0 N/A 5,231,476 2,308,592 N/A Bank 8.10 4.0 5.0 4,604,689 2,272,912 2,841,139

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
Segment Reporting (Tables)	Dec. 31, 2019
Segment Reporting [Abstract]
Segment Reporting	Our segment information for 2019 , 2018 and 2017 is as follows: (Dollars in thousands) Global Commercial Bank (1) SVB Private Bank SVB Capital (1) SVB Leerink (1) Other Items (2) Total Year ended December 31, 2019 Net interest income $ 1,850,391 $ 51,022 $ 38 $ 1,252 $ 193,898 $ 2,096,601 Provision for credit losses (91,814 ) (2,369 ) — — (12,233 ) (106,416 ) Noninterest income 637,922 3,366 122,394 264,516 193,281 1,221,479 Noninterest expense (3) (874,854 ) (40,151 ) (30,798 ) (252,678 ) (402,781 ) (1,601,262 ) Income (loss) before income tax expense (4) $ 1,521,645 $ 11,868 $ 91,634 $ 13,090 $ (27,835 ) $ 1,610,402 Total average loans, net of unearned income $ 26,031,284 $ 3,341,188 $ — $ — $ 543,735 $ 29,916,207 Total average assets (5) (6) 56,043,321 3,371,052 405,152 397,650 2,994,455 63,211,630 Total average deposits 53,053,665 1,524,232 — — 479,053 55,056,950 Year ended December 31, 2018 Net interest income $ 1,623,488 $ 64,902 $ 23 $ — $ 205,575 $ 1,893,988 Provision for credit losses (80,953 ) (3,339 ) — — (3,578 ) (87,870 ) Noninterest income (7) 520,302 2,281 101,181 — 121,220 744,984 Noninterest expense (3) (793,159 ) (25,064 ) (22,792 ) — (347,178 ) (1,188,193 ) Income (loss) before income tax expense (4) $ 1,269,678 $ 38,780 $ 78,412 $ — $ (23,961 ) $ 1,362,909 Total average loans, net of unearned income $ 22,354,305 $ 2,850,271 $ — $ — $ 425,944 $ 25,630,520 Total average assets (5) (8) 48,854,416 2,871,743 380,543 — 3,122,358 55,229,060 Total average deposits 46,039,570 1,502,308 — — 533,466 48,075,344 Year ended December 31, 2017 Net interest income $ 1,274,366 $ 58,131 $ 48 $ — $ 87,824 $ 1,420,369 Provision for credit losses (81,553 ) (4,386 ) — — (6,365 ) (92,304 ) Noninterest income (7) 392,101 2,175 58,992 — 103,963 557,231 Noninterest expense (3) (707,666 ) (17,693 ) (19,340 ) — (265,956 ) (1,010,655 ) Income (loss) before income tax expense (4) $ 877,248 $ 38,227 $ 39,700 $ — $ (80,534 ) $ 874,641 Total average loans, net of unearned income $ 18,479,793 $ 2,423,078 $ — $ — $ 256,523 $ 21,159,394 Total average assets (5) (8) 43,704,667 2,445,220 325,939 — 1,904,446 48,380,272 Total average deposits 41,043,731 1,303,542 — — 397,875 42,745,148 (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 on equity warrant assets and gains or losses on the sale of fixed income investments and 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 $20.4 million , $21.8 million and $25.3 million for 2019 , 2018 and 2017 , respectively. (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.

Parent Company Only Condensed_2

Parent Company Only Condensed Financial Information (Tables)	12 Months Ended
	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
Condensed Balance Sheets	The condensed balance sheets of SVB Financial at December 31, 2019 and 2018 , and the related condensed statements of income, comprehensive income and cash flows for 2019 , 2018 and 2017 , are presented below: Condensed Balance Sheets December 31, (Dollars in thousands) 2019 2018 Assets: Cash and cash equivalents $ 800,926 $ 553,049 Investment securities 474,842 510,836 Loans, net of unearned income 15,245 — Lease right-of-use assets 71,847 — Other assets 214,167 204,301 Investment in subsidiaries: Bank subsidiary 5,034,095 4,554,813 Nonbank subsidiaries 432,073 116,968 Total assets $ 7,043,195 $ 5,939,967 Liabilities and SVBFG stockholders’ equity: 3.50% Senior Notes $ 347,987 $ 347,639 5.375% Senior Notes — 348,826 Lease liabilities 87,999 — Other liabilities 136,903 127,293 Total liabilities $ 572,889 $ 823,758 SVBFG stockholders’ equity 6,470,306 5,116,209 Total liabilities and SVBFG stockholders’ equity $ 7,043,195 $ 5,939,967
Condensed Statements of Income	Condensed Statements of Income Year ended December 31, (Dollars in thousands) 2019 2018 2017 Interest income $ 4,473 $ 3,307 $ 2,077 Interest expense (31,666 ) (32,037 ) (34,932 ) Dividend income from bank subsidiary 733,000 140,000 90,000 Gains on equity warrant assets, net 138,078 89,142 54,555 Gains on investment securities, net 45,345 13,546 37,132 Fund management fees and other noninterest income 21,567 26,388 24,613 General and administrative expenses (94,712 ) (70,976 ) (63,077 ) Income tax (expense) benefit (40,218 ) (14,383 ) 10,367 Income before net income of subsidiaries 775,867 154,987 120,735 Equity in undistributed net income of bank subsidiary 303,618 793,641 356,769 Equity in undistributed net income of nonbank subsidiaries 57,371 25,212 13,002 Net income available to common stockholders $ 1,136,856 $ 973,840 $ 490,506
Condensed Statements of Comprehensive Income	Condensed Statements of Comprehensive Income Year ended December 31, (Dollars in thousands) 2019 2018 2017 Net income available to common stockholders $ 1,136,856 $ 973,840 $ 490,506 Other comprehensive income (loss), net of tax: Foreign currency translation gains (losses) 2,319 (4,107 ) 3,769 Changes in fair value on cash flow hedges (2,130 ) — — Changes in unrealized holding gains and losses on AFS securities 2,310 120 22,285 Equity in other comprehensive income (loss) of bank and nonbank subsidiaries 136,066 (19,171 ) (50,956 ) Reclassifications to retained earnings for the adoption of new accounting guidance — (29,490 ) — Other comprehensive income (loss), net of tax 138,565 (52,648 ) (24,902 ) Total comprehensive income $ 1,275,421 $ 921,192 $ 465,604
Condensed Statements of Cash Flows	Condensed Statements of Cash Flows Year ended December 31, (Dollars in thousands) 2019 2018 2017 Cash flows from operating activities: Net income available to common stockholders $ 1,136,856 $ 973,840 $ 490,506 Adjustments to reconcile net income to net cash provided by operating activities: Gains on equity warrant assets, net (138,078 ) (89,142 ) (54,555 ) Gains on investment securities, net (45,345 ) (13,546 ) (17,060 ) Distributions of earnings from investment securities 49,776 47,596 14,015 Net income of bank subsidiary (1,036,618 ) (933,641 ) (446,769 ) Net income on nonbank subsidiaries (57,371 ) (25,212 ) (13,002 ) Cash dividends from bank subsidiary 733,000 140,000 90,000 Amortization of share-based compensation 66,815 45,675 36,900 Decrease in other assets 27,205 51,169 12,959 Increase in other liabilities 21,391 21,619 11,774 Other, net 8,084 (31,024 ) 316 Net cash provided by operating activities 765,715 187,334 125,084 Cash flows from investing activities: Net decrease (increase) in investment securities from purchases, sales and maturities 128,635 73,742 (152,015 ) Net (increase) decrease in loans (15,245 ) — 13,337 Increase in investment in bank subsidiary (42,952 ) (31,292 ) (38,927 ) Decrease (increase) in investment in nonbank subsidiaries 23,275 (5,323 ) 34,374 Acquisition of SVB Leerink (265,601 ) — — Net cash (used for) provided by investing activities (171,888 ) 37,127 (143,231 ) Cash flows from financing activities: Principal payments of long-term debt (358,395 ) — (51,546 ) Proceeds from issuance of common stock, ESPP and ESOP 24,818 18,387 27,003 Net proceeds from the issuance of preferred stock 340,138 — — Common stock repurchase (352,511 ) (147,123 ) — Net cash (used for) by financing activities (345,950 ) (128,736 ) (24,543 ) Net increase (decrease) in cash and cash equivalents 247,877 95,725 (42,690 ) Cash and cash equivalents at beginning of period 553,049 457,324 500,014 Cash and cash equivalents at end of period $ 800,926 $ 553,049 $ 457,324

Unaudited Quarterly Financial_2

Unaudited Quarterly Financial Data (Tables)	12 Months Ended
Unaudited Quarterly Financial Data (Tables)	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Supplemental Consolidated Financial Information	Our supplemental consolidated financial information for each three month period in 2019 and 2018 are as follows: Three months ended (Dollars in thousands, except per share amounts) March 31, June 30, September 30, December 31, 2019: Interest income $ 551,014 $ 585,767 $ 583,892 $ 588,735 Interest expense 38,128 56,364 63,248 55,067 Net interest income 512,886 529,403 520,644 533,668 Provision for credit losses 28,551 23,946 36,536 17,383 Noninterest income 280,376 333,750 294,009 313,344 Noninterest expense 365,664 383,522 391,324 460,752 Income before income tax expense 399,047 455,685 386,793 368,877 Income tax expense 107,435 119,114 105,075 94,061 Net income before noncontrolling interests 291,612 336,571 281,718 274,816 Net income attributable to noncontrolling interests (2,880 ) (18,584 ) (14,437 ) (11,960 ) Net income available to common stockholders $ 288,732 $ 317,987 $ 267,281 $ 262,856 Earnings per common share—basic $ 5.49 $ 6.12 $ 5.19 $ 5.10 Earnings per common share—diluted 5.44 6.08 5.15 5.06 2018: Interest income $ 432,398 $ 481,301 $ 513,313 $ 542,897 Interest expense 12,535 14,858 20,091 28,437 Net interest income 419,863 466,443 493,222 514,460 Provision for credit losses 27,972 29,080 17,174 13,644 Noninterest income 155,518 192,689 210,070 186,707 Noninterest expense 265,417 305,739 309,445 307,592 Income before income tax expense 281,992 324,313 376,673 379,931 Income tax expense 73,966 77,287 95,308 105,000 Net income before noncontrolling interests 208,026 247,026 281,365 274,931 Net income attributable to noncontrolling interests (13,065 ) (9,228 ) (6,548 ) (8,667 ) Net income available to common stockholders $ 194,961 $ 237,798 $ 274,817 $ 266,264 Earnings per common share—basic $ 3.69 $ 4.48 $ 5.16 $ 5.01 Earnings per common share—diluted 3.63 4.42 5.10 4.96

Nature of Business (Details)

Nature of Business (Details)	12 Months Ended
Nature of Business (Details)	Dec. 31, 2019Segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of operating segments	4

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Lower Limit
Significant Accounting Policies [Line Items]
Term of contract on forward contracts	1 year
Upper Limit
Significant Accounting Policies [Line Items]
Ownership interest percentage	5.00%	5.00%
Term of contract on forward contracts	5 years
Equity warrant assets (public portfolio) \| Lower Limit
Significant Accounting Policies [Line Items]
Duration of the sale restrictions	3 months
Equity warrant assets (public portfolio) \| Upper Limit
Significant Accounting Policies [Line Items]
Duration of the sale restrictions	6 months
Equity warrant assets (public portfolio) \| Sales restrictions discount \| Lower Limit
Significant Accounting Policies [Line Items]
Sales restriction discounts	0.10
Equity warrant assets (public portfolio) \| Sales restrictions discount \| Upper Limit
Significant Accounting Policies [Line Items]
Sales restriction discounts	0.20
Non-marketable securities \| Other investments \| SPD Silicon Valley Bank Co., Ltd. \| Equity method investee
Significant Accounting Policies [Line Items]
Ownership interest percentage	50.00%
Non-marketable securities \| Lower Limit \| Consolidated venture capital and private equity fund investments \| Equity method investee
Significant Accounting Policies [Line Items]
Ownership interest percentage	20.00%
Non-marketable securities \| Lower Limit \| Investments in limited partnerships \| Equity method investee
Significant Accounting Policies [Line Items]
Ownership interest percentage	5.00%
Non-marketable securities \| Fair value accounting \| Consolidated venture capital and private equity fund investments \| Growth Partners, LP
Significant Accounting Policies [Line Items]
Ownership interest percentage	33.00%	33.00%
Non-marketable securities \| Fair value accounting \| Consolidated venture capital and private equity fund investments \| Capital Preferred Return Fund, LP
Significant Accounting Policies [Line Items]
Ownership interest percentage	20.00%	20.00%
Non-marketable securities \| Fair value accounting \| Consolidated venture capital and private equity fund investments \| Strategic Investors Fund, LP
Significant Accounting Policies [Line Items]
Ownership interest percentage	12.60%	12.60%
Non-marketable securities \| Fair value accounting \| Consolidated venture capital and private equity fund investments \| CP I, LP
Significant Accounting Policies [Line Items]
Ownership interest percentage	10.70%	10.70%

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Maximum Estimated Useful Lives by Asset Classification (Details)	12 Months Ended
	Dec. 31, 2019
Leasehold Improvements
Property Plant and Equipment Estimated Useful Lives [Line Items]
Premises and equipment, estimated useful life	Lesser of lease term or asset life
Furniture and equipment
Property Plant and Equipment Estimated Useful Lives [Line Items]
Premises and equipment, estimated useful life	7 years
Software \| Lower Limit
Property Plant and Equipment Estimated Useful Lives [Line Items]
Premises and equipment, estimated useful life	3 years
Software \| Upper Limit
Property Plant and Equipment Estimated Useful Lives [Line Items]
Premises and equipment, estimated useful life	7 years
Computer hardware \| Lower Limit
Property Plant and Equipment Estimated Useful Lives [Line Items]
Premises and equipment, estimated useful life	3 years
Computer hardware \| Upper Limit
Property Plant and Equipment Estimated Useful Lives [Line Items]
Premises and equipment, estimated useful life	5 years

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Adoption of New Accounting Standards (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease right-of-use assets		$ 197,365	$ 146,000	$ 0
Lease liabilities		$ 218,847	178,000	$ 0
Accounting Standards Update 2017-08
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative adjustment for new accounting standards	[1]		(583)
Accounting Standards Update 2017-08 \| Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative adjustment for new accounting standards	[1]		$ (583)

[1]	See Note 2- "Summary of Significant Accounting Policies" of the "Notes to Consolidated Financial Statements" under Part II, Item 8 of this report for additional details.

Business Combination - Narrativ

Business Combination - Narrative (Details) - USD ($) $ in Thousands	Jan. 04, 2019	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Intangible assets		$ 60,900								$ 60,900
Goodwill		137,823				$ 0				137,823	$ 0
Net income available to common stockholders		$ 262,856	$ 267,281	$ 317,987	$ 288,732	$ 266,264	$ 274,817	$ 237,798	$ 194,961	1,136,856	$ 973,840	$ 490,506
SVB Leerink
Business Acquisition [Line Items]
Total purchase price	$ 273,230
Retention pool for acquiree employees	$ 60,000
Vesting period of retention pool for acquiree employees	5 years
Post-combination expenses	$ 9,100
Intangible assets	60,900
Goodwill	$ 137,823
Net income available to common stockholders										$ 9,524

Business Combination - Allocati

Business Combination - Allocation of Purchase Price (Details) - USD ($) $ in Thousands	Jan. 04, 2019	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill		$ 137,823	$ 0
SVB Leerink
Business Acquisition [Line Items]
Cash paid	$ 265,601
Replacement award liabilities	7,629
Total purchase price	273,230
Fair value of net assets acquired	135,407
Goodwill	$ 137,823

Business Combination - Fair Val

Business Combination - Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 04, 2019
Assets acquired:
Intangible assets	$ 60,900
SVB Leerink
Assets acquired:
Cash and cash equivalents		$ 163,273
Investment securities		33,644
Accounts receivable		36,538
Intangible assets		60,900
Other assets		35,128
Total assets acquired		329,483
Liabilities assumed:
Accrued compensation		137,206
Due to broker-dealers		18,483
Other liabilities		33,131
Noncontrolling interests		5,256
Total liabilities assumed		194,076
Net assets		$ 135,407

Business Combination - Fair V_2

Business Combination - Fair Value of Other Intangible Assets Acquired and Useful Lives (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 04, 2019
Other intangible assets:
Estimated Fair Value	$ 60,900
SVB Leerink
Other intangible assets:
Estimated Fair Value		$ 60,900
Customer relationships
Other intangible assets:
Estimated Fair Value	$ 42,000
Customer relationships \| SVB Leerink
Other intangible assets:
Estimated Fair Value		42,000
Weighted Average Estimated Useful Life - in Years	11 years
Other
Other intangible assets:
Estimated Fair Value	$ 18,900
Other \| SVB Leerink
Other intangible assets:
Estimated Fair Value		$ 18,900
Weighted Average Estimated Useful Life - in Years	9 years 10 months 24 days

Business Combination - Revenue

Business Combination - Revenue and Expenses from SVB Leerink (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Net interest income	$ 533,668	$ 520,644	$ 529,403	$ 512,886	$ 514,460	$ 493,222	$ 466,443	$ 419,863	$ 2,096,601	$ 1,893,988	$ 1,420,369
Noninterest income	313,344	294,009	333,750	280,376	186,707	210,070	192,689	155,518	1,221,479	744,984	557,231
Noninterest expense	460,752	391,324	383,522	365,664	307,592	309,445	305,739	265,417	1,601,262	1,188,193	1,010,655
Income before income tax expense									1,610,402	1,362,909	874,641
Income tax expense	94,061	105,075	119,114	107,435	105,000	95,308	77,287	73,966	425,685	351,561	355,463
Net income attributable to noncontrolling interests	11,960	14,437	18,584	2,880	8,667	6,548	9,228	13,065	47,861	37,508	28,672
Net income available to common stockholders	$ 262,856	$ 267,281	$ 317,987	$ 288,732	$ 266,264	$ 274,817	$ 237,798	$ 194,961	1,136,856	$ 973,840	$ 490,506
SVB Leerink
Business Acquisition [Line Items]
Net interest income									1,252
Noninterest income									265,841
Noninterest expense									252,678
Income before income tax expense									14,415
Income tax expense									3,566
Net income attributable to noncontrolling interests									1,325
Net income available to common stockholders									$ 9,524

Business Combination - Acquisit

Business Combination - Acquisition-related Activities Expense (Details) - SVB Leerink $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Business Acquisition [Line Items]
Professional fees	$ 919
Other	396
Total acquisition-related expenses	$ 1,315

Stockholders' Equity and EPS -

Stockholders' Equity and EPS - Reclassification of AOCI (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification adjustment for losses on available-for-sale securities included in net income									$ 134,670,000	$ 88,094,000	$ 64,603,000
Related tax benefit	$ (94,061,000)	$ (105,075,000)	$ (119,114,000)	$ (107,435,000)	$ (105,000,000)	$ (95,308,000)	$ (77,287,000)	$ (73,966,000)	(425,685,000)	(351,561,000)	(355,463,000)
Net interest income	533,668,000	520,644,000	529,403,000	512,886,000	514,460,000	493,222,000	466,443,000	419,863,000	2,096,601,000	1,893,988,000	1,420,369,000
Net income available to common stockholders	$ 262,856,000	$ 267,281,000	$ 317,987,000	$ 288,732,000	$ 266,264,000	$ 274,817,000	$ 237,798,000	$ 194,961,000	1,136,856,000	973,840,000	490,506,000
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net income available to common stockholders									6,687,000	535,000	3,091,000
Accumulated Net Unrealized Investment Gain (Loss) \| Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification adjustment for losses on available-for-sale securities included in net income									3,905,000	740,000	5,189,000
Related tax benefit									(1,087,000)	(205,000)	(2,098,000)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent \| Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Related tax benefit									(1,489,000)	0	0
Net interest income									$ 5,358,000	$ 0	$ 0

Stockholders' Equity and EPS _2

Stockholders' Equity and EPS - Activity Related to Net Gains on Cash Flow Hedges in AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge gains expected to reclassified out of AOCI over next 12 months	$ 3,200
Balance, beginning of period, net of tax	5,264,843	$ 4,319,415	$ 3,777,037
Balance, end of period, net of tax	6,621,080	5,264,843	4,319,415
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period, net of tax	0	0	0
Net decrease in fair value, net of tax	(5,999)	0	0
Net realized loss reclassified to net income, net of tax	3,869	0	0
Balance, end of period, net of tax	$ (2,130)	$ 0	$ 0

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								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Numerator:
Net income available to common stockholders	$ 262,856	$ 267,281	$ 317,987	$ 288,732	$ 266,264	$ 274,817	$ 237,798	$ 194,961	$ 1,136,856	$ 973,840	$ 490,506
Denominator:
Weighted average common shares outstanding-basic (in shares)									51,915	53,078	52,588
Denominator for diluted calculation (in shares)									52,311	53,772	53,306
Earnings per common share:
Basic (usd per share)	$ 5.10	$ 5.19	$ 6.12	$ 5.49	$ 5.01	$ 5.16	$ 4.48	$ 3.69	$ 21.90	$ 18.35	$ 9.33
Diluted (usd per share)	$ 5.06	$ 5.15	$ 6.08	$ 5.44	$ 4.96	$ 5.10	$ 4.42	$ 3.63	$ 21.73	$ 18.11	$ 9.20
Stock options and ESPP
Denominator:
Weighted average effect of dilutive securities (in shares)									227	377	385
Restricted stock units
Denominator:
Weighted average effect of dilutive securities (in shares)									169	317	333

Stockholders' Equity and EPS _4

Stockholders' Equity and EPS - Common Shares Excluded from Diluted EPS Calculation (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from diluted earnings per share calculation (in shares)	417	144	74
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from diluted earnings per share calculation (in shares)	167	59	73
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from diluted earnings per share calculation (in shares)	250	85	1

Stockholders' Equity and EPS _5

Stockholders' Equity and EPS - Stock Repurchase Programs (Details) - USD ($)	2 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Oct. 24, 2019	Nov. 13, 2018
Equity and Earnings Per Share [Abstract]
Amount of outstanding common stock authorized to be repurchased					$ 350,000,000	$ 500,000,000
Common stock repurchased (in shares)	0	2,200,000
Common stock repurchased	$ 0	$ 499,600,000	$ 352,511,000	$ 147,123,000

Stockholders' Equity and EPS _6

Stockholders' Equity and EPS - Preferred Stock (Details)	Dec. 09, 2019$ / sharesshares	Dec. 31, 2019USD ($)$ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares
Class of Stock [Line Items]
Preferred stock, shares issued \| shares		350,000	0
Preferred stock, par value		$ 0.001	$ 0.001
Preferred stock, shares issued, value \| $		$ 340,138,000	$ 0
Preferred stock, shares outstanding \| shares		350,000	0
Preferred Stock, Series A
Class of Stock [Line Items]
Preferred stock, shares issued \| shares	350,000	350,000
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, liquidation preference (usd per share)	$ 1,000
Preferred stock, dividend rate, rate	5.25%
Preferred stock, shares issued, value \| $		$ 340,100,000
Preferred stock, liquidation preference, value \| $		$ 350,000,000
Depositary Shares
Class of Stock [Line Items]
Preferred stock, liquidation preference (usd per share)	$ 25	$ 25
Preferred stock, depositary share ownership interest		25
Preferred stock, dividends paid per depositary share (usd per share)		$ 0

Stockholders' Equity and EPS _7

Stockholders' Equity and EPS - Preferred Stock Summary Schedule (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)$ / sharesshares	Dec. 09, 2019$ / sharesshares	Oct. 24, 2019USD ($)	Dec. 31, 2018USD ($)$ / sharesshares
Class of Stock [Line Items]
Preferred stock, shares issued, value \| $	$ 340,138			$ 0
Shares issued and outstanding \| shares	350,000			0
Per Value	$ 0.001			$ 0.001
Preferred Stock, Series A
Class of Stock [Line Items]
Amount outstanding \| $			$ 350,000
Preferred stock, shares issued, value \| $	$ 340,100
Shares issued and outstanding \| shares	350,000	350,000
Per Value	$ 0.001	$ 0.001
Liquidation preference per depository share (usd per share)		1,000
Depositary Shares
Class of Stock [Line Items]
Ownership interest per depository share (usd per share)	25
Liquidation preference per depository share (usd per share)	$ 25	$ 25
2019 dividends paid per depository share (usd per share)	$ 0

Share-Based Compensation - Shar

Share-Based Compensation - Share Based Compensation and Related Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Payment Arrangement [Abstract]
Share-based compensation expense	$ 66,815	$ 45,675	$ 36,900
Income tax benefit related to share-based compensation expense	(16,152)	(10,997)	(12,845)
Capitalized compensation costs	$ 1,517	$ 1,466	$ 1,071

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Details)	12 Months Ended
Share-Based Compensation - Additional Information (Details)	Dec. 31, 2019USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing stock price \| $ / shares	$ 251.04
Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum aggregate number of shares that may be awarded and sold	12,028,505
Conversion ratio for awards granted	2
Conversion ratio for awards forfeited	2
Number of common stock shares available for future issuance	3,421,734
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum percentage of gross compensation that employees may contribute annually	10.00%
Maximum amount of gross compensation employees may contribute annually \| $	$ 25,000
Offering period	6 months
Percentage of fair market value of common stock at which employees may purchase shares	85.00%
Eligibility To Participate In Employee Stock Purchase Plan, Service Period Per Week	20 hours
Eligibility To Participate In Employee Stock Purchase Plan, Service Period Per Calendar Year	5 months
Number of shares issued under ESPP	161,410
Proceeds from issuance of shares under ESPP \| $	$ 27,900,000
Number of common stock shares available for future issuance	1,337,808
Expected volatility term	5 years
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, exercisable period	5 years
Restricted stock units \| Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, exercisable period	4 years
Restricted stock units \| Equity Incentive Plan \| Lower Limit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, exercisable period	3 years
Performance Based Restricted Stock \| Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, exercisable period	3 years
Performance Based Restricted Stock \| Equity Incentive Plan \| Lower Limit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, exercisable period	1 year
Stock options \| Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, exercisable period	4 years
Options granted under the 2006 Incentive Plan, expiration period	7 years

Share-Based Compensation - Unre

Share-Based Compensation - Unrecognized Share-Based Compensation Expense (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 115,623
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 14,313
Average Expected Recognition Period - in Years	2 years 6 months 7 days
Restricted stock awards/units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 101,310
Average Expected Recognition Period - in Years	2 years 7 months 28 days

Share-Based Compensation - Weig

Share-Based Compensation - Weighted Average Assumptions and Fair Values Used for Employee Stock Options and Restricted Stock Units (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average expected term of options - in years	4 years 7 months 6 days	4 years 9 months 18 days	4 years 10 months 24 days
Weighted average expected volatility of the Company's underlying common stock	35.50%	34.70%	33.70%
Risk-free interest rate	2.26%	2.82%	1.81%
Expected dividend yield	$ 0	$ 0	$ 0
Weighted average grant date fair value - stock options (usd per share)	$ 83.50	$ 105.81	$ 57.81
Weighted average grant date fair value - restricted stock units (usd per share)	$ 243.65	$ 294.50	$ 181.23

Share-Based Compensation - We_2

Share-Based Compensation - Weighted Average Assumptions and Fair Values Used for ESPP (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used [Line Items]
Expected term in years	4 years 7 months 6 days	4 years 9 months 18 days	4 years 10 months 24 days
Weighted average expected volatility of the Company's underlying common stock	35.50%	34.70%	33.70%
Risk-free interest rate	2.26%	2.82%	1.81%
Expected dividend yield	$ 0	$ 0	$ 0
Weighted average grant date fair value (usd per share)	$ 83.50	$ 105.81	$ 57.81
Employee Stock Purchase Plan
Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used [Line Items]
Expected term in years	15 days	15 days	15 days
Weighted average expected volatility of the Company's underlying common stock	38.10%	32.20%	31.20%
Risk-free interest rate	2.40%	1.79%	0.80%
Expected dividend yield	$ 0	$ 0	$ 0
Weighted average grant date fair value (usd per share)	$ 52.90	$ 62.76	$ 41.70

Share-Based Compensation - Stoc

Share-Based Compensation - Stock Option Information Related to Equity Incentive Plan (Details)	12 Months Ended
	Dec. 31, 2019USD ($)$ / sharesshares
Options
Outstanding, beginning of period (in shares) \| shares	679,659
Granted (in shares) \| shares	126,945
Exercised (in shares) \| shares	(154,897)
Forfeited (in shares) \| shares	(25,580)
Expired (in shares) \| shares	(720)
Outstanding, end of period (in shares) \| shares	625,407
Vested and expected to vest (in shares) \| shares	609,849
Exercisable (in shares) \| shares	361,503
Weighted average exercise price
Outstanding, beginning of period (usd per share) \| $ / shares	$ 137.19
Granted (usd per share) \| $ / shares	249.15
Exercised (usd per share) \| $ / shares	86.96
Forfeited (usd per share) \| $ / shares	213.26
Expired (usd per share) \| $ / shares	64.37
Outstanding, end of period (usd per share) \| $ / shares	169.33
Vested and expected to vest (usd per share) \| $ / shares	167.31
Exercisable (usd per share) \| $ / shares	$ 124.70
Weighted Average Remaining Contractual Life in Years
Outstanding (in years)	3 years 7 months 17 days
Vested and expected to vest (in years)	3 years 6 months 29 days
Exercisable (in years)	2 years 4 months 6 days
Aggregate Intrinsic Value of In-The-Money Options
Outstanding \| $	$ 55,364,613
Vested and expected to vest \| $	55,128,404
Exercisable \| $	$ 46,760,360

Share-Based Compensation - St_2

Share-Based Compensation - Stock Options Outstanding (Details)	12 Months Ended
	Dec. 31, 2019$ / sharesshares
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Outstanding Options, Shares \| shares	625,407
Outstanding Options, Weighted Average Remaining Contractual Life in Years	3 years 7 months 17 days
Outstanding Options, Weighted Average Exercise Price (usd per share)	$ 169.33
Exercisable Options, Shares \| shares	361,503
Exercisable Options, Weighted Average Exercise Price (usd per share)	$ 124.70
$71.11 - 105.14
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, minimum (usd per share)	71.11
Range of Exercise Prices, maximum (usd per share)	$ 105.14
Outstanding Options, Shares \| shares	55,724
Outstanding Options, Weighted Average Remaining Contractual Life in Years	13 days
Outstanding Options, Weighted Average Exercise Price (usd per share)	$ 73.67
Exercisable Options, Shares \| shares	55,724
Exercisable Options, Weighted Average Exercise Price (usd per share)	$ 73.67
105.15 - 105.84
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, minimum (usd per share)	105.15
Range of Exercise Prices, maximum (usd per share)	$ 105.84
Outstanding Options, Shares \| shares	114,449
Outstanding Options, Weighted Average Remaining Contractual Life in Years	3 years 3 months 29 days
Outstanding Options, Weighted Average Exercise Price (usd per share)	$ 105.18
Exercisable Options, Shares \| shares	79,188
Exercisable Options, Weighted Average Exercise Price (usd per share)	$ 105.18
105.85 - 108.59
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, minimum (usd per share)	105.85
Range of Exercise Prices, maximum (usd per share)	$ 108.59
Outstanding Options, Shares \| shares	99,936
Outstanding Options, Weighted Average Remaining Contractual Life in Years	1 year 3 months 29 days
Outstanding Options, Weighted Average Exercise Price (usd per share)	$ 107.94
Exercisable Options, Shares \| shares	99,936
Exercisable Options, Weighted Average Exercise Price (usd per share)	$ 107.94
108.60 - 149.65
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, minimum (usd per share)	108.60
Range of Exercise Prices, maximum (usd per share)	$ 149.65
Outstanding Options, Shares \| shares	67,573
Outstanding Options, Weighted Average Remaining Contractual Life in Years	2 years 3 months 3 days
Outstanding Options, Weighted Average Exercise Price (usd per share)	$ 129.13
Exercisable Options, Shares \| shares	67,573
Exercisable Options, Weighted Average Exercise Price (usd per share)	$ 129.13
149.66 - 180.62
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, minimum (usd per share)	149.66
Range of Exercise Prices, maximum (usd per share)	$ 180.62
Outstanding Options, Shares \| shares	80,583
Outstanding Options, Weighted Average Remaining Contractual Life in Years	4 years 4 months 2 days
Outstanding Options, Weighted Average Exercise Price (usd per share)	$ 178.07
Exercisable Options, Shares \| shares	37,320
Exercisable Options, Weighted Average Exercise Price (usd per share)	$ 178.04
180.63 - 247.01
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, minimum (usd per share)	180.63
Range of Exercise Prices, maximum (usd per share)	$ 247.01
Outstanding Options, Shares \| shares	11,966
Outstanding Options, Weighted Average Remaining Contractual Life in Years	6 years 2 months 4 days
Outstanding Options, Weighted Average Exercise Price (usd per share)	$ 226.22
Exercisable Options, Shares \| shares	1,578
Exercisable Options, Weighted Average Exercise Price (usd per share)	$ 210.73
247.02 - 255.58
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, minimum (usd per share)	247.02
Range of Exercise Prices, maximum (usd per share)	$ 255.58
Outstanding Options, Shares \| shares	117,265
Outstanding Options, Weighted Average Remaining Contractual Life in Years	6 years 3 months 29 days
Outstanding Options, Weighted Average Exercise Price (usd per share)	$ 250.43
Exercisable Options, Shares \| shares	0
Exercisable Options, Weighted Average Exercise Price (usd per share)	$ 0
255.59 - 315.12
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, minimum (usd per share)	255.59
Range of Exercise Prices, maximum (usd per share)	$ 315.12
Outstanding Options, Shares \| shares	75,647
Outstanding Options, Weighted Average Remaining Contractual Life in Years	5 years 3 months 29 days
Outstanding Options, Weighted Average Exercise Price (usd per share)	$ 305.18
Exercisable Options, Shares \| shares	19,617
Exercisable Options, Weighted Average Exercise Price (usd per share)	$ 304.39
315.13 - 324.77
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, minimum (usd per share)	315.13
Range of Exercise Prices, maximum (usd per share)	$ 324.77
Outstanding Options, Shares \| shares	2,264
Outstanding Options, Weighted Average Remaining Contractual Life in Years	5 years 7 months 6 days
Outstanding Options, Weighted Average Exercise Price (usd per share)	$ 324.77
Exercisable Options, Shares \| shares	567
Exercisable Options, Weighted Average Exercise Price (usd per share)	$ 324.77

Share-Based Compensation - Info

Share-Based Compensation - Information for Restricted Stock Units under Equity Incentive Plan (Details) - $ / shares	Feb. 01, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Weighted Average Grant Date Fair Value
Granted (usd per share)		$ 243.65	$ 294.50	$ 181.23
Market price of stock award		$ 251.04
Restricted stock units
Shares
Nonvested, beginning of period (in shares)		597,296
Granted (in shares)		543,938
Vested (in shares)		(227,707)
Forfeited (in shares)		(65,555)
Nonvested, end of period (in shares)		847,972	597,296
Weighted Average Grant Date Fair Value
Nonvested, beginning of period (usd per share)		$ 194.48
Granted (usd per share)		243.65
Vested (usd per share)		154.96
Forfeited (usd per share)		195.69
Nonvested, end of period (usd per share)		$ 236.54	$ 194.48
Vesting period of stock award		5 years
Retention Plan for SVB Leerink \| Restricted stock units
Shares
Granted (in shares)	125,160
Weighted Average Grant Date Fair Value
Market price of stock award	$ 238.28

Share-Based Compensation - Summ

Share-Based Compensation - Summary of Information Regarding Stock Option and Restricted Stock Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of stock options exercised	$ 23,088	$ 40,681	$ 36,173
Total grant date fair value of stock options vested	5,735	5,823	6,094
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of restricted stock vested	56,101	63,917	40,925
Total grant date fair value of restricted stock vested	$ 35,191	$ 28,813	$ 23,383

Variable Interest Entities - Ca

Variable Interest Entities - Carrying Amounts and Classification of Significant Variable Interests (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 6,781,783	$ 3,571,539	$ 2,923,075	$ 2,545,750
Non-marketable and other equity securities	1,213,829	941,104
Accrued interest receivable and other assets	1,745,233	951,261
Total assets	71,004,903	56,927,979
Other liabilities	2,041,752	1,006,359
Total liabilities	64,383,823	51,663,136
Investments in Affordable Housing Projects [Abstract]
Investments in qualified affordable housing projects	458,476	318,575
Related other liabilities of unfunded credit commitments	302,031	205,685
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Cash and cash equivalents	7,629	9,058
Non-marketable and other equity securities	270,057	221,646
Accrued interest receivable and other assets	1,117	228
Total assets	278,803	230,932
Other liabilities	2,854	919
Total liabilities	2,854	919
Maximum Exposure to Loss in Unconsolidated VIEs	275,900
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Cash and cash equivalents	0	0
Non-marketable and other equity securities	689,360	568,272
Accrued interest receivable and other assets	0	0
Total assets	689,360	568,272
Other liabilities	302,031	205,685
Total liabilities	302,031	205,685
Maximum Exposure to Loss in Unconsolidated VIEs	689,360	568,272
Variable Interest Entity, Not Primary Beneficiary \| Non-marketable securities
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Unconsolidated VIEs	$ 689,360	$ 568,272

Variable Interest Entities - Ad

Variable Interest Entities - Additional Information (Details) $ in Thousands	Dec. 31, 2019USD ($)entity	Dec. 31, 2018USD ($)
Variable Interest Entity [Line Items]
Investments in qualified affordable housing projects, net	$ 458,476	$ 318,575
Other liabilities	$ 302,031	205,685
Number of consolidated entities \| entity	4
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Maximum exposure to loss in unconsolidated VIEs	$ 275,900
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Maximum exposure to loss in unconsolidated VIEs	$ 689,360	$ 568,272

Reserves on Deposit with the _3

Reserves on Deposit with the Federal Reserve Bank and Federal Bank Stock - Average Required Reserve Balances (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Federal Home Loan Bank Stock and Federal Reserve Bank Stock [Abstract]
Average required reserve balances at FRB San Francisco	$ 315,784	$ 455,866

Reserves on Deposit with the _4

Reserves on Deposit with the Federal Reserve Bank and Federal Bank Stock - Shares Held at Federal Reserve Bank and Federal Home Loan Bank (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Federal Home Loan Bank Stock and Federal Reserve Bank Stock [Abstract]
FHLB stock holdings	$ 17,250	$ 17,250
FRB stock holdings	$ 43,008	$ 41,628

Cash and Cash Equivalents - Sum

Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash and Cash Equivalents [Abstract]
Cash and due from banks	$ 6,492,443	$ 3,444,971
Securities purchased under agreements to resell	289,340	123,611
Other short-term investment securities	0	2,957
Total cash and cash equivalents	$ 6,781,783	$ 3,571,539	$ 2,923,075	$ 2,545,750

Cash and Cash Equivalents - S_2

Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Footnote Information) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Cash and Cash Equivalents [Abstract]
Deposits at the Federal Reserve Bank earning interest at the Federal Funds target rate	$ 3,700	$ 1,700
Interest-earning deposits in other financial institutions	2,100	1,200
Fair value of securities purchased under agreements to resell	$ 295	$ 126

Cash and Cash Equivalents - Sec

Cash and Cash Equivalents - Securities Purchased Under Agreements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash and Cash Equivalents [Abstract]
Average securities purchased under agreements to resell	$ 166,205	$ 132,938
Maximum amount outstanding at any month-end during the year	$ 613,247	$ 375,180

Investment Securities - Major C

Investment Securities - Major Components of Investment Securities Portfolio (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Investment Holdings [Line Items]
Amortized cost	$ 13,894,348	$ 7,862,311
Unrealized Gains	140,713	12,082
Unrealized Losses	(20,142)	(84,350)
Available-for-sale securities	14,014,919	7,790,043
U.S. treasury securities
Investment Holdings [Line Items]
Amortized cost	6,815,874	4,762,182
Unrealized Gains	82,267	11,638
Unrealized Losses	(4,131)	(35,562)
Available-for-sale securities	6,894,010	4,738,258
U.S. agency debentures
Investment Holdings [Line Items]
Amortized cost	100,000	1,090,426
Unrealized Gains	0	61
Unrealized Losses	(453)	(6,370)
Available-for-sale securities	99,547	1,084,117
Foreign government debt securities
Investment Holdings [Line Items]
Amortized cost	9,037	5,815
Unrealized Gains	1	0
Unrealized Losses	0	(3)
Available-for-sale securities	9,038	5,812
Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Investment Holdings [Line Items]
Amortized cost	4,109,372
Unrealized Gains	39,438
Unrealized Losses	(19)
Available-for-sale securities	4,148,791
Residential mortgage-backed securities \| Fixed rate
Investment Holdings [Line Items]
Amortized cost	1,520,414	1,922,618
Unrealized Gains	17,929	0
Unrealized Losses	0	(42,400)
Available-for-sale securities	1,538,343	1,880,218
Residential mortgage-backed securities \| Variable rate
Investment Holdings [Line Items]
Amortized cost		81,270
Unrealized Gains		383
Unrealized Losses		(15)
Available-for-sale securities		$ 81,638
Agency-issued commercial mortgage-backed securities
Investment Holdings [Line Items]
Amortized cost	1,339,651
Unrealized Gains	1,078
Unrealized Losses	(15,539)
Available-for-sale securities	$ 1,325,190

Investment Securities - Activit

Investment Securities - Activity of Available-for-Sale Securities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Sales proceeds	$ 2,189,087	$ 474,482	$ 580,871
Gross realized gains	1,250	127	5,113
Gross realized losses	(5,155)	(867)	(10,302)
Net realized losses	$ (3,905)	$ (740)	$ (5,189)

Investment Securities - Summary

Investment Securities - Summary of Unrealized Losses on Available for Sale Securities (Detail) $ in Thousands	Dec. 31, 2019USD ($)Investment	Dec. 31, 2018USD ($)Investment
Investments, Unrealized Loss Position [Line Items]
Less than 12 months - Fair Value of Investments	$ 2,102,365	$ 957,319
Less than 12 months - Unrealized Losses	(20,007)	(5,412)
12 months or longer - Fair Value of Investments	449,850	6,039,639
12 months or longer - Unrealized Losses	(135)	(78,938)
Fair Value of Investments	2,552,215	6,996,958
Unrealized Losses	$ (20,142)	$ (84,350)
Number of investments in unrealized loss position \| Investment	58	200
Number of investments with unrealized losses greater than 12 months \| Investment	12	162
U.S. treasury securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months - Fair Value of Investments	$ 971,572	$ 494,287
Less than 12 months - Unrealized Losses	(3,996)	(3,785)
12 months or longer - Fair Value of Investments	449,850	3,568,119
12 months or longer - Unrealized Losses	(135)	(31,777)
Fair Value of Investments	1,421,422	4,062,406
Unrealized Losses	(4,131)	(35,562)
U.S. agency debentures
Investments, Unrealized Loss Position [Line Items]
Less than 12 months - Fair Value of Investments	99,547	443,790
Less than 12 months - Unrealized Losses	(453)	(1,602)
12 months or longer - Fair Value of Investments	0	591,216
12 months or longer - Unrealized Losses	0	(4,768)
Fair Value of Investments	99,547	1,035,006
Unrealized Losses	(453)	(6,370)
Foreign government debt securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months - Fair Value of Investments	5,812
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		5,812
Unrealized Losses		(3)
Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months - Fair Value of Investments	4,014
Less than 12 months - Unrealized Losses	(19)
12 months or longer - Fair Value of Investments	0
12 months or longer - Unrealized Losses	0
Fair Value of Investments	4,014
Unrealized Losses	(19)
Residential mortgage-backed securities \| Fixed rate
Investments, Unrealized Loss Position [Line Items]
Less than 12 months - Fair Value of Investments		13,430
Less than 12 months - Unrealized Losses		(22)
12 months or longer - Fair Value of Investments		1,866,788
12 months or longer - Unrealized Losses		(42,378)
Fair Value of Investments		1,880,218
Unrealized Losses		(42,400)
Residential mortgage-backed securities \| Variable rate
Investments, Unrealized Loss Position [Line Items]
Less than 12 months - Fair Value of Investments		0
Less than 12 months - Unrealized Losses		0
12 months or longer - Fair Value of Investments		13,516
12 months or longer - Unrealized Losses		(15)
Fair Value of Investments		13,516
Unrealized Losses		$ (15)
Agency-issued commercial mortgage-backed securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months - Fair Value of Investments	1,027,232
Less than 12 months - Unrealized Losses	(15,539)
12 months or longer - Fair Value of Investments	0
12 months or longer - Unrealized Losses	0
Fair Value of Investments	1,027,232
Unrealized Losses	$ (15,539)

Investment Securities - Summa_2

Investment Securities - Summary of Remaining Contractual Principal Maturities for Available-for-Sale Securities (Detail) - Available-for-sale Securities $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Investments Classified By Contractual Maturity Date [Line Items]
Total	$ 14,014,919
One Year or Less	1,845,009
After One Year to Five Years	1,890,778
After Five Years to Ten Years	4,012,540
After Ten Years	6,266,592
U.S. treasury securities
Investments Classified By Contractual Maturity Date [Line Items]
Total	6,894,010
One Year or Less	1,835,971
After One Year to Five Years	1,890,778
After Five Years to Ten Years	3,167,261
After Ten Years	0
U.S. agency debentures
Investments Classified By Contractual Maturity Date [Line Items]
Total	99,547
One Year or Less	0
After One Year to Five Years	0
After Five Years to Ten Years	99,547
After Ten Years	0
Foreign government debt securities
Investments Classified By Contractual Maturity Date [Line Items]
Total	9,038
One Year or Less	9,038
After One Year to Five Years	0
After Five Years to Ten Years	0
After Ten Years	0
Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Investments Classified By Contractual Maturity Date [Line Items]
Total	4,148,791
One Year or Less	0
After One Year to Five Years	0
After Five Years to Ten Years	0
After Ten Years	4,148,791
Residential mortgage-backed securities \| Fixed rate
Investments Classified By Contractual Maturity Date [Line Items]
Total	1,538,343
One Year or Less	0
After One Year to Five Years	0
After Five Years to Ten Years	1,858
After Ten Years	1,536,485
Agency-issued commercial mortgage-backed securities
Investments Classified By Contractual Maturity Date [Line Items]
Total	1,325,190
One Year or Less	0
After One Year to Five Years	0
After Five Years to Ten Years	743,874
After Ten Years	$ 581,316
Lower Limit
Investments Classified By Contractual Maturity Date [Line Items]
Mortgage-backed securities contractual maturities (in years)	10 years
Upper Limit
Investments Classified By Contractual Maturity Date [Line Items]
Mortgage-backed securities contractual maturities (in years)	30 years

Investment Securities - Summa_3

Investment Securities - Summary of Components and Unrealized Losses on Held-to-Maturity Securities (Details) $ in Thousands	Dec. 31, 2019USD ($)Investment	Dec. 31, 2018USD ($)Investment
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 13,842,946	$ 15,487,442
Unrealized Gains	289,763	17,040
Unrealized Losses	(17,437)	(316,246)
Fair Value	14,115,272	15,188,236
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value of Investments, Less than 12 months	1,218,980	3,851,352
Unrealized Losses, Less than 12 months	(5,727)	(56,636)
Fair Value of Investments, 12 months or longer	1,368,956	8,092,085
Unrealized Losses, 12 months or longer	(11,710)	(259,610)
Fair Value of Investments	2,587,936	11,943,437
Unrealized Losses	$ (17,437)	$ (316,246)
Number of held-to-maturity investments with unrealized loss \| Investment	266	1,244
Number of held-to-maturity investments in continuous loss more than 12 months \| Investment	143	695
U.S. agency debentures
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 518,728	$ 640,990
Unrealized Gains	6,640	2,148
Unrealized Losses	(668)	(4,850)
Fair Value	524,700	638,288
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value of Investments, Less than 12 months	125,304	291,432
Unrealized Losses, Less than 12 months	(668)	(2,915)
Fair Value of Investments, 12 months or longer	0	66,624
Unrealized Losses, 12 months or longer	0	(1,935)
Fair Value of Investments	125,304	358,056
Unrealized Losses	(668)	(4,850)
Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	6,992,009	8,103,638
Unrealized Gains	142,209	5,011
Unrealized Losses	(2,066)	(157,767)
Fair Value	7,132,152	7,950,882
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value of Investments, Less than 12 months	132,042	2,493,156
Unrealized Losses, Less than 12 months	(420)	(34,956)
Fair Value of Investments, 12 months or longer	181,585	3,972,690
Unrealized Losses, 12 months or longer	(1,646)	(122,811)
Fair Value of Investments	313,627	6,465,846
Unrealized Losses	(2,066)	(157,767)
Residential mortgage-backed securities \| Fixed rate
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,608,032	2,183,204
Unrealized Gains	592	0
Unrealized Losses	(8,502)	(62,272)
Fair Value	1,600,122	2,120,932
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value of Investments, Less than 12 months	350,868	16,952
Unrealized Losses, Less than 12 months	(1,131)	(109)
Fair Value of Investments, 12 months or longer	872,527	2,103,980
Unrealized Losses, 12 months or longer	(7,371)	(62,163)
Fair Value of Investments	1,223,395	2,120,932
Unrealized Losses	(8,502)	(62,272)
Residential mortgage-backed securities \| Variable rate
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	178,611	214,483
Unrealized Gains	94	608
Unrealized Losses	(259)	(14)
Fair Value	178,446	215,077
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value of Investments, Less than 12 months	143,265	3,364
Unrealized Losses, Less than 12 months	(256)	(1)
Fair Value of Investments, 12 months or longer	4,615	8,101
Unrealized Losses, 12 months or longer	(3)	(13)
Fair Value of Investments	147,880	11,465
Unrealized Losses	(259)	(14)
Agency-issued commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,759,615	2,769,706
Unrealized Gains	56,914	6,969
Unrealized Losses	(4,508)	(64,374)
Fair Value	2,812,021	2,712,301
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value of Investments, Less than 12 months	307,087	177,697
Unrealized Losses, Less than 12 months	(1,818)	(1,580)
Fair Value of Investments, 12 months or longer	310,229	1,600,277
Unrealized Losses, 12 months or longer	(2,690)	(62,794)
Fair Value of Investments	617,316	1,777,974
Unrealized Losses	(4,508)	(64,374)
Municipal bonds and notes
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,785,951	1,575,421
Unrealized Gains	83,314	2,304
Unrealized Losses	(1,434)	(26,969)
Fair Value	1,867,831	1,550,756
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value of Investments, Less than 12 months	160,414	868,751
Unrealized Losses, Less than 12 months	(1,434)	(17,075)
Fair Value of Investments, 12 months or longer	0	340,413
Unrealized Losses, 12 months or longer	0	(9,894)
Fair Value of Investments	160,414	1,209,164
Unrealized Losses	$ (1,434)	$ (26,969)

Investment Securities - Summa_4

Investment Securities - Summary of Remaining Contractual Principal Maturities for Held-to-Maturity Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	$ 14,115,272	$ 15,188,236
U.S. agency debentures
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	524,700	638,288
Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	7,132,152	7,950,882
Residential mortgage-backed securities \| Fixed rate
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	1,600,122	2,120,932
Residential mortgage-backed securities \| Variable rate
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	178,446	215,077
Agency-issued commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	2,812,021	2,712,301
Municipal bonds and notes
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	1,867,831	$ 1,550,756
After One Year to Five Years - Amortized Cost	83,368
After Five Years to Ten Years - Amortized Cost	387,278
Held-to-maturity securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	13,842,946
Fair Value	14,115,272
One Year or Less - Amortized Cost	16,039
One Year or Less - Fair Value	16,101
After One Year to Five Years - Amortized Cost	283,227
After One Year to Five Years - Fair Value	285,698
After Five Years to Ten Years - Amortized Cost	2,236,089
After Five Years to Ten Years - Fair Value	2,260,337
After Ten Years - Amortized Cost	11,307,591
After Ten Years - Fair Value	11,553,136
Held-to-maturity securities \| U.S. agency debentures
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	518,728
Fair Value	524,700
One Year or Less - Amortized Cost	0
One Year or Less - Fair Value	0
After One Year to Five Years - Amortized Cost	123,100
After One Year to Five Years - Fair Value	123,969
After Five Years to Ten Years - Amortized Cost	395,628
After Five Years to Ten Years - Fair Value	400,731
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]
Amortized Cost	6,992,009
Fair Value	7,132,152
One Year or Less - Amortized Cost	2,066
One Year or Less - Fair Value	2,117
After One Year to Five Years - Amortized Cost	76,759
After One Year to Five Years - Fair Value	76,956
After Five Years to Ten Years - Amortized Cost	726,422
After Five Years to Ten Years - Fair Value	725,854
After Ten Years - Amortized Cost	6,186,762
After Ten Years - Fair Value	6,327,225
Held-to-maturity securities \| Residential mortgage-backed securities \| Fixed rate
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,608,032
Fair Value	1,600,122
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	624,128
After Five Years to Ten Years - Fair Value	619,180
After Ten Years - Amortized Cost	983,904
After Ten Years - Fair Value	980,942
Held-to-maturity securities \| Residential mortgage-backed securities \| Variable rate
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	178,611
Fair Value	178,446
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	178,611
After Ten Years - Fair Value	178,446
Held-to-maturity securities \| Agency-issued commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,759,615
Fair Value	2,812,021
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	102,633
After Five Years to Ten Years - Fair Value	110,836
After Ten Years - Amortized Cost	2,656,982
After Ten Years - Fair Value	2,701,185
Held-to-maturity securities \| Municipal bonds and notes
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,785,951
Fair Value	1,867,831
One Year or Less - Amortized Cost	13,973
One Year or Less - Fair Value	13,984
After One Year to Five Years - Fair Value	84,773
After Five Years to Ten Years - Fair Value	403,736
After Ten Years - Amortized Cost	1,301,332
After Ten Years - Fair Value	$ 1,365,338

Investment Securities - Major_2

Investment Securities - Major Components of Non-marketable and Other Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investment Holdings [Line Items]
Investments in qualified affordable housing projects, net	$ 458,476	$ 318,575
Total non-marketable and other securities	1,213,829	941,104
Consolidated venture capital and private equity fund investments \| Fair value accounting
Investment Holdings [Line Items]
Nonmarketable securities	87,180	118,333
Consolidated venture capital and private equity fund investments \| Equity method accounting
Investment Holdings [Line Items]
Nonmarketable securities	215,367	129,485
Unconsolidated venture capital and private equity fund investments \| Fair value accounting
Investment Holdings [Line Items]
Nonmarketable securities	178,217		$ 201,098
Unconsolidated venture capital and private equity fund investments \| Equity method accounting
Investment Holdings [Line Items]
Nonmarketable securities	215,367	129,485
Other investments \| Fair value accounting
Investment Holdings [Line Items]
Nonmarketable securities	55,255	25,668
Other investments \| Equity method accounting
Investment Holdings [Line Items]
Nonmarketable securities	152,863	121,721
Equity securities \| Fair value accounting
Investment Holdings [Line Items]
Other equity securities	59,200	20,398
Debt funds \| Equity method accounting
Investment Holdings [Line Items]
Nonmarketable securities	$ 7,271	$ 5,826

Investment Securities - Consoli

Investment Securities - Consolidated Venture Capital and Private Equity Fund Investments (Details) - Consolidated venture capital and private equity fund investments - Fair value accounting - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Investment Holdings [Line Items]
Nonmarketable securities	$ 87,180	$ 118,333
Strategic Investors Fund, LP
Investment Holdings [Line Items]
Nonmarketable securities	$ 5,729	$ 12,452
Strategic Investors Fund, LP \| Non-marketable securities
Investment Holdings [Line Items]
Ownership interest percentage	12.60%	12.60%
Capital Preferred Return Fund, LP
Investment Holdings [Line Items]
Nonmarketable securities	$ 45,341	$ 53,957
Capital Preferred Return Fund, LP \| Non-marketable securities
Investment Holdings [Line Items]
Ownership interest percentage	20.00%	20.00%
Growth Partners, LP
Investment Holdings [Line Items]
Nonmarketable securities	$ 35,976	$ 50,845
Growth Partners, LP \| Non-marketable securities
Investment Holdings [Line Items]
Ownership interest percentage	33.00%	33.00%
CP I, LP
Investment Holdings [Line Items]
Nonmarketable securities	$ 134	$ 1,079
CP I, LP \| Non-marketable securities
Investment Holdings [Line Items]
Ownership interest percentage	10.70%	10.70%

Investment Securities - Unconso

Investment Securities - Unconsolidated Venture Capital and Private Equity Fund Investments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)Investment	Dec. 31, 2018Investment	Dec. 31, 2017USD ($)
Upper Limit
Investment Holdings [Line Items]
Ownership interest percentage	5.00%	5.00%
Unconsolidated venture capital and private equity fund investments \| Fair value accounting
Investment Holdings [Line Items]
Nonmarketable securities \| $	$ 178,217		$ 201,098
Non-marketable securities \| Unconsolidated venture capital and private equity fund investments \| Fair value accounting
Investment Holdings [Line Items]
Number of investments \| Investment	205	213

Investment Securities - Other I

Investment Securities - Other Investments Without a Readily Determinable Fair Value (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Investments, Debt and Equity Securities [Abstract]
Carrying value at December 31, 2018	$ 55,255
Year end Adjustments
Impairment	(460)
Upward changes for observable prices	1,929
Downward changes for observable prices	(3,511)
Cumulative Adjustments
Impairment	(460)
Upward changes for observable prices	2,348
Downward changes for observable prices	$ 5,030

Investment Securities - Nonmark

Investment Securities - Nonmarketable Securities Under Equity Method Accounting (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Consolidated venture capital and private equity fund investments \| Equity method accounting
Investment Holdings [Line Items]
Nonmarketable securities	$ 215,367	$ 129,485
Consolidated venture capital and private equity fund investments \| Equity method accounting \| Strategic Investors Fund II, LP
Investment Holdings [Line Items]
Nonmarketable securities	3,612	4,670
Consolidated venture capital and private equity fund investments \| Equity method accounting \| Strategic Investors Fund III, LP
Investment Holdings [Line Items]
Nonmarketable securities	15,668	17,396
Consolidated venture capital and private equity fund investments \| Equity method accounting \| Strategic Investors Fund IV, LP
Investment Holdings [Line Items]
Nonmarketable securities	27,064	28,974
Consolidated venture capital and private equity fund investments \| Equity method accounting \| Strategic Investors Fund V funds
Investment Holdings [Line Items]
Nonmarketable securities	46,830	28,189
Consolidated venture capital and private equity fund investments \| Equity method accounting \| CP II, LP
Investment Holdings [Line Items]
Nonmarketable securities	5,907	7,122
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	116,286	43,134
Debt funds \| Equity method accounting
Investment Holdings [Line Items]
Nonmarketable securities	7,271	5,826
Debt funds \| Equity method accounting \| Gold Hill Capital 2008, LP (ii)
Investment Holdings [Line Items]
Nonmarketable securities	5,525	3,901
Debt funds \| Equity method accounting \| Other debt funds
Investment Holdings [Line Items]
Nonmarketable securities	1,746	1,925
Other investments \| Equity method accounting
Investment Holdings [Line Items]
Nonmarketable securities	152,863	121,721
Other investments \| Equity method accounting \| SPD Silicon Valley Bank Co., Ltd.
Investment Holdings [Line Items]
Nonmarketable securities	74,190	76,412
Other investments \| Equity method accounting \| Other investments
Investment Holdings [Line Items]
Nonmarketable securities	$ 78,673	$ 45,309
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| CP II, LP \| Direct ownership interest
Investment Holdings [Line Items]
Ownership interest percentage	1.30%
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| CP II, LP \| Indirect ownership interest
Investment Holdings [Line Items]
Ownership interest percentage	3.80%
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Equity method accounting \| Strategic Investors Fund II, LP
Investment Holdings [Line Items]
Ownership interest percentage	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]
Ownership interest percentage	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]
Ownership interest percentage	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]
Ownership interest percentage	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]
Ownership interest percentage	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]
Ownership interest percentage	3.80%
Non-marketable securities \| Debt funds \| Equity method accounting \| Direct ownership interest
Investment Holdings [Line Items]
Ownership interest percentage	11.50%
Non-marketable securities \| Debt funds \| Equity method accounting \| Indirect ownership interest
Investment Holdings [Line Items]
Ownership interest percentage	4.00%
Non-marketable securities \| Debt funds \| Equity method accounting \| Gold Hill Capital 2008, LP (ii)
Investment Holdings [Line Items]
Ownership interest percentage	15.50%	15.50%
Non-marketable securities \| Other investments \| Equity method accounting \| SPD Silicon Valley Bank Co., Ltd.
Investment Holdings [Line Items]
Ownership interest percentage	50.00%	50.00%

Investment Securities - Qualifi

Investment Securities - Qualified Affordable Housing Projects (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investments in Affordable Housing Projects [Abstract]
Investments in qualified affordable housing projects, net	$ 458,476	$ 318,575
Other liabilities	302,031	205,685
Investment Holdings [Line Items]
Tax credits and other tax benefits recognized	35,037	24,047	$ 17,296
Amortization expense included in provision for income taxes	$ 28,267	18,876	$ 17,362
Low Income Housing Tax Credit Funds
Investment Holdings [Line Items]
Cumulative effect adjustment		$ 3,800

Investment Securities - Compone

Investment Securities - Components of Gains and Losses (Realized and Unrealized) on Investment Securities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Gain (Loss) on Securities [Line Items]
Gains on non-marketable and other equity securities, net	$ 138,575	$ 88,834	$ 69,792
Losses on sales of securities	5,200
OTTI	400	5,300	4,200
Gains on sales of investments		20,800	3,800
Non-marketable securities
Gain (Loss) on Securities [Line Items]
Less: Realized net losses on the sales and OTTI of non-marketable and other equity securities	(4,744)	26,097	355
Net gains on non-marketable and other equity securities still held	133,831	114,931	70,147
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Fair value accounting
Gain (Loss) on Securities [Line Items]
Gains on non-marketable and other equity securities, net	22,507	20,999	27,186
Non-marketable securities \| Consolidated venture capital and private equity fund investments \| Equity method accounting
Gain (Loss) on Securities [Line Items]
Gains on non-marketable and other equity securities, net	73,813	49,341	14,472
Non-marketable securities \| Unconsolidated venture capital and private equity fund investments \| Fair value accounting
Gain (Loss) on Securities [Line Items]
Gains on non-marketable and other equity securities, net	31,482	39,075	21,377
Non-marketable securities \| Other investments \| Fair value accounting
Gain (Loss) on Securities [Line Items]
Gains on non-marketable and other equity securities, net	2,742	3,206	3,842
Non-marketable securities \| Other investments \| Equity method accounting
Gain (Loss) on Securities [Line Items]
Gains on non-marketable and other equity securities, net	(1,388)	1,155	(6,276)
Non-marketable securities \| Debt funds \| Equity method accounting
Gain (Loss) on Securities [Line Items]
Gains on non-marketable and other equity securities, net	1,647	541	8,950
Other equity securities \| Fair value accounting
Gain (Loss) on Securities [Line Items]
Gains on non-marketable and other equity securities, net	$ 7,772	$ (25,483)	$ 241

Loans, Allowance for Loan Los_3

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Receivables [Abstract]
Loans modified in TDRs	$ 108,982	$ 83,695
Unfunded commitments available for funding	$ 800

Loans, Allowance for Loan Los_4

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Composition of Loans, Net of Unearned Income (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unearned income on loans	$ 163,000	$ 173,000
Loans, net of unearned income	33,164,636	28,338,280
Commercial loans, excluding real estate secured and construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	28,428,121	24,456,728
Commercial loans, excluding real estate secured and construction \| Software/internet
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	6,199,548	6,154,755
Commercial loans, excluding real estate secured and construction \| Hardware
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	1,371,159	1,234,557
Commercial loans, excluding real estate secured and construction \| Private equity/venture capital
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	17,801,324	14,110,560
Commercial loans, excluding real estate secured and construction \| Life science/healthcare
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	2,368,048	2,385,612
Commercial loans, excluding real estate secured and construction \| Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	267,487	249,266
Commercial loans, excluding real estate secured and construction \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	420,555	321,978
Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	4,146,347	3,363,803
Real estate secured loans \| Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	820,730	710,397
Real estate secured loans \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	38,880	40,435
Real estate secured loans \| Construction loans, premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	83,000	99,000
Construction loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	100,219	97,077
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	3,776,686	3,033,643
Consumer loans \| Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	3,286,737	2,612,971
Consumer loans \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	$ 489,949	$ 420,672

Loans, Allowance for Loan Los_5

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Composition of Loans, Net of Unearned Income (Additional Information) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	$ 33,164,636	$ 28,338,280
Credit card receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	395,000	335,000
Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	4,146,347	3,363,803
Real estate secured loans \| Construction loans, premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	83,000	99,000
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	3,776,686	3,033,643
Consumer loans \| Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	3,286,737	2,612,971
Consumer loans \| Real estate secured loans \| Loans for personal residence
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	2,829,880	2,251,292
Consumer loans \| Real estate secured loans \| Loans to eligible employees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	401,396	290,194
Consumer loans \| Real estate secured loans \| Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	$ 55,461	$ 71,485

Loans, Allowance for Loan Los_6

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Composition of Loans, Net of Unearned Income, Broken Out by Portfolio Segment and Class of Financing Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of unearned income	$ 33,164,636	$ 28,338,280
Commercial loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of unearned income	29,387,950	25,304,637
Commercial loans \| Software/internet
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of unearned income	6,199,548	6,154,755
Commercial loans \| Hardware
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of unearned income	1,371,159	1,234,557
Commercial loans \| Private equity/venture capital
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of unearned income	17,801,324	14,110,560
Commercial loans \| Life science/healthcare
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of unearned income	2,368,048	2,385,612
Commercial loans \| Premium wine
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of unearned income	1,088,217	959,663
Commercial loans \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of unearned income	559,654	459,490
Consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of unearned income	3,776,686	3,033,643
Consumer loans \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of unearned income	489,949	420,672
Consumer loans \| Real estate secured loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of unearned income	$ 3,286,737	$ 2,612,971

Loans, Allowance for Loan Los_7

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Aging of Gross Loans, Broken out by Portfolio Segment and Class of Financing Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	$ 191,587	$ 159,113
Current	33,136,117	28,352,199
Loans Past Due 90 Days or More Still Accruing Interest	3,515	1,964
Total gross loans excluding impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	167,213	129,997
Current	33,007,482	28,211,241
Loans Past Due 90 Days or More Still Accruing Interest	3,515	1,964
Impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	24,374	29,116
Current	128,635	140,958
Loans Past Due 90 Days or More Still Accruing Interest	0	0
30 - 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	137,375	121,143
30 - 59 Days Past Due \| Total gross loans excluding impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	132,279	118,300
30 - 59 Days Past Due \| Impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	5,096	2,843
60 - 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	38,224	10,914
60 - 89 Days Past Due \| Total gross loans excluding impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	31,419	9,733
60 - 89 Days Past Due \| Impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	6,805	1,181
Equal to or Greater Than 90 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	15,988	27,056
Equal to or Greater Than 90 Days Past Due \| Total gross loans excluding impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	3,515	1,964
Equal to or Greater Than 90 Days Past Due \| Impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	12,473	25,092
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	160,119	122,726
Current	29,246,333	25,192,386
Loans Past Due 90 Days or More Still Accruing Interest	3,150	402
Commercial loans \| Software/internet
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	24,064	35,456
Current	6,136,230	6,059,672
Loans Past Due 90 Days or More Still Accruing Interest	0	378
Commercial loans \| Hardware
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	18,188	338
Current	1,357,379	1,233,956
Loans Past Due 90 Days or More Still Accruing Interest	0	4
Commercial loans \| Private equity/venture capital
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	101,426	59,492
Current	17,715,964	14,054,940
Loans Past Due 90 Days or More Still Accruing Interest	3,150	0
Commercial loans \| Life science/healthcare
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	8,865	16,918
Current	2,387,203	2,410,091
Loans Past Due 90 Days or More Still Accruing Interest	0	19
Commercial loans \| Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	7,543	2,967
Current	1,070,111	956,285
Loans Past Due 90 Days or More Still Accruing Interest	0	0
Commercial loans \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	33	7,555
Current	579,446	477,442
Loans Past Due 90 Days or More Still Accruing Interest	0	1
Commercial loans \| 30 - 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	125,833	114,341
Commercial loans \| 30 - 59 Days Past Due \| Software/internet
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	19,839	28,134
Commercial loans \| 30 - 59 Days Past Due \| Hardware
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	104	300
Commercial loans \| 30 - 59 Days Past Due \| Private equity/venture capital
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	97,893	59,481
Commercial loans \| 30 - 59 Days Past Due \| Life science/healthcare
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	445	16,082
Commercial loans \| 30 - 59 Days Past Due \| Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	7,543	2,953
Commercial loans \| 30 - 59 Days Past Due \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	9	7,391
Commercial loans \| 60 - 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	31,136	7,983
Commercial loans \| 60 - 89 Days Past Due \| Software/internet
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	4,225	6,944
Commercial loans \| 60 - 89 Days Past Due \| Hardware
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	18,084	34
Commercial loans \| 60 - 89 Days Past Due \| Private equity/venture capital
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	383	11
Commercial loans \| 60 - 89 Days Past Due \| Life science/healthcare
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	8,420	817
Commercial loans \| 60 - 89 Days Past Due \| Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	14
Commercial loans \| 60 - 89 Days Past Due \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	24	163
Commercial loans \| Equal to or Greater Than 90 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	3,150	402
Commercial loans \| Equal to or Greater Than 90 Days Past Due \| Software/internet
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	378
Commercial loans \| Equal to or Greater Than 90 Days Past Due \| Hardware
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	4
Commercial loans \| Equal to or Greater Than 90 Days Past Due \| Private equity/venture capital
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	3,150	0
Commercial loans \| Equal to or Greater Than 90 Days Past Due \| Life science/healthcare
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	19
Commercial loans \| Equal to or Greater Than 90 Days Past Due \| Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Commercial loans \| Equal to or Greater Than 90 Days Past Due \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	1
Consumer, Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	7,094	7,271
Current	3,761,149	3,018,855
Loans Past Due 90 Days or More Still Accruing Interest	365	1,562
Consumer, Other \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	447	361
Current	489,831	420,359
Loans Past Due 90 Days or More Still Accruing Interest	0	0
Consumer, Other \| Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	6,647	6,910
Current	3,271,318	2,598,496
Loans Past Due 90 Days or More Still Accruing Interest	365	1,562
Consumer, Other \| 30 - 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	6,446	3,959
Consumer, Other \| 30 - 59 Days Past Due \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	164	361
Consumer, Other \| 30 - 59 Days Past Due \| Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	6,282	3,598
Consumer, Other \| 60 - 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	283	1,750
Consumer, Other \| 60 - 89 Days Past Due \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	283	0
Consumer, Other \| 60 - 89 Days Past Due \| Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	1,750
Consumer, Other \| Equal to or Greater Than 90 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	365	1,562
Consumer, Other \| Equal to or Greater Than 90 Days Past Due \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Consumer, Other \| Equal to or Greater Than 90 Days Past Due \| Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	$ 365	$ 1,562

Loans, Allowance for Loan Los_8

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Impaired Loans and Allowance for Loan Losses, Broken out by Portfolio Segment and Class of Financing Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Total carrying value of impaired loans	$ 153,009	$ 170,074
Total unpaid principal of impaired loans	214,036	199,908
Impaired Financing Receivables With Related Allowance
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	95,438	73,002
Impaired Financing Receivables With No Related Allowance
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is no related allowance for loan losses	57,571	97,072
Commercial loans
Financing Receivable, Impaired [Line Items]
Total carrying value of impaired loans	147,529	165,835
Total unpaid principal of impaired loans	205,509	193,939
Commercial loans \| Software/internet
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	64,100	49,625
Impaired loans for which there is no related allowance for loan losses	31,472	65,225
Total carrying value of impaired loans	95,572	114,850
Total unpaid principal of impaired loans	109,736	131,858
Commercial loans \| Hardware
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	2,143	1,256
Impaired loans for which there is no related allowance for loan losses	3,315	10,250
Total carrying value of impaired loans	5,458	11,506
Total unpaid principal of impaired loans	10,049	12,159
Commercial loans \| Private equity/venture capital
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	0	0
Impaired loans for which there is no related allowance for loan losses	0	3,700
Total carrying value of impaired loans	0	3,700
Total unpaid principal of impaired loans	0	3,700
Commercial loans \| Life science/healthcare
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	25,941	17,791
Impaired loans for which there is no related allowance for loan losses	5,671	16,276
Total carrying value of impaired loans	31,612	34,067
Total unpaid principal of impaired loans	70,600	44,446
Commercial loans \| Premium wine
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	204	0
Impaired loans for which there is no related allowance for loan losses	11,718	1,301
Total carrying value of impaired loans	11,922	1,301
Total unpaid principal of impaired loans	12,010	1,365
Commercial loans \| Other
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	1,284	411
Impaired loans for which there is no related allowance for loan losses	1,681	0
Total carrying value of impaired loans	2,965	411
Total unpaid principal of impaired loans	3,114	411
Commercial loans \| Impaired Financing Receivables With Related Allowance
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	93,672	69,083
Commercial loans \| Impaired Financing Receivables With No Related Allowance
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is no related allowance for loan losses	53,857	96,752
Consumer loans
Financing Receivable, Impaired [Line Items]
Total carrying value of impaired loans	5,480	4,239
Total unpaid principal of impaired loans	8,527	5,969
Consumer loans \| Real estate secured loans
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	1,766	3,919
Impaired loans for which there is no related allowance for loan losses	3,714	320
Total carrying value of impaired loans	5,480	4,239
Total unpaid principal of impaired loans	8,527	5,969
Consumer loans \| Impaired Financing Receivables With Related Allowance
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is a related allowance for loan losses	1,766	3,919
Consumer loans \| Impaired Financing Receivables With No Related Allowance
Financing Receivable, Impaired [Line Items]
Impaired loans for which there is no related allowance for loan losses	$ 3,714	$ 320

Loans, Allowance for Loan Los_9

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Average Impaired Loans, Broken out by Portfolio Segment and Class of Financing Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Average impaired loans	$ 160,347	$ 179,666	$ 193,120
Interest income recognized on impaired loans	4,582	2,664	3,566
Private equity/venture capital
Financing Receivable, Impaired [Line Items]
Average impaired loans	2,264	1,327
Commercial loans
Financing Receivable, Impaired [Line Items]
Average impaired loans	153,181	175,280	189,802
Interest income recognized on impaired loans	4,528	2,649	3,566
Commercial loans \| Software/internet
Financing Receivable, Impaired [Line Items]
Average impaired loans	88,628	112,493	119,557
Interest income recognized on impaired loans	2,813	1,513	2,263
Commercial loans \| Hardware
Financing Receivable, Impaired [Line Items]
Average impaired loans	12,500	28,540	35,022
Interest income recognized on impaired loans	464	312	1,061
Commercial loans \| Private equity/venture capital
Financing Receivable, Impaired [Line Items]
Average impaired loans			556
Interest income recognized on impaired loans	0	0	0
Commercial loans \| Life science/healthcare
Financing Receivable, Impaired [Line Items]
Average impaired loans	44,827	30,144	30,842
Interest income recognized on impaired loans	919	756	90
Commercial loans \| Premium wine
Financing Receivable, Impaired [Line Items]
Average impaired loans	2,912	2,605	3,249
Interest income recognized on impaired loans	311	68	152
Commercial loans \| Other
Financing Receivable, Impaired [Line Items]
Average impaired loans	2,050	171	576
Interest income recognized on impaired loans	21	0	0
Consumer loans
Financing Receivable, Impaired [Line Items]
Average impaired loans	7,166	4,386	3,318
Interest income recognized on impaired loans	54	15	0
Consumer loans \| Other
Financing Receivable, Impaired [Line Items]
Average impaired loans	7	358	1,804
Interest income recognized on impaired loans	0	0	0
Consumer loans \| Real estate secured loans
Financing Receivable, Impaired [Line Items]
Average impaired loans	7,159	4,028	1,514
Interest income recognized on impaired loans	$ 54	$ 15	$ 0

Loans, Allowance for Loan Lo_10

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Activity in Allowance for Loan Losses Broken out by Portfolio Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	$ 280,903	$ 255,024	$ 225,366
Charge-offs	(92,603)	(67,917)	(66,682)
Recoveries	21,038	11,636	8,538
Provision for (Reduction of) Loan Losses	94,183	84,292	85,939
Foreign Currency Translation Adjustments	1,403	(2,132)	1,863
Ending Balance	304,924	280,903	255,024
Commercial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	260,966	238,583	213,182
Charge-offs	(91,572)	(67,628)	(65,115)
Recoveries	20,782	11,149	7,175
Provision for (Reduction of) Loan Losses	91,814	80,953	81,553
Foreign Currency Translation Adjustments	1,428	(2,091)	1,788
Ending Balance	283,418	260,966	238,583
Commercial loans \| Software/internet
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	103,567	96,104	97,388
Charge-offs	(46,930)	(42,315)	(45,012)
Recoveries	11,363	5,664	4,649
Provision for (Reduction of) Loan Losses	31,766	45,068	38,462
Foreign Currency Translation Adjustments	457	(954)	617
Ending Balance	100,223	103,567	96,104
Commercial loans \| Hardware
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	19,725	27,614	31,166
Charge-offs	(10,056)	(16,148)	(10,414)
Recoveries	7,069	1,849	487
Provision for (Reduction of) Loan Losses	2,740	6,555	6,051
Foreign Currency Translation Adjustments	166	(145)	324
Ending Balance	19,644	19,725	27,614
Commercial loans \| Private equity/venture capital
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	98,581	82,468	50,299
Charge-offs	(2,047)	(112)	(323)
Recoveries	2,047	13	0
Provision for (Reduction of) Loan Losses	16,989	16,485	31,625
Foreign Currency Translation Adjustments	235	(273)	867
Ending Balance	115,805	98,581	82,468
Commercial loans \| Life science/healthcare
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	32,180	24,924	25,446
Charge-offs	(31,950)	(6,662)	(8,210)
Recoveries	267	348	189
Provision for (Reduction of) Loan Losses	38,178	14,347	7,414
Foreign Currency Translation Adjustments	570	(777)	85
Ending Balance	39,245	32,180	24,924
Commercial loans \| Premium wine
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	3,355	3,532	4,115
Charge-offs	(174)	0	0
Recoveries	0	0	0
Provision for (Reduction of) Loan Losses	1,813	(182)	(540)
Foreign Currency Translation Adjustments	154	5	(43)
Ending Balance	5,148	3,355	3,532
Commercial loans \| Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	3,558	3,941	4,768
Charge-offs	(415)	(2,391)	(1,156)
Recoveries	36	3,275	1,850
Provision for (Reduction of) Loan Losses	328	(1,320)	(1,459)
Foreign Currency Translation Adjustments	(154)	53	(62)
Ending Balance	3,353	3,558	3,941
Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	19,937	16,441	12,184
Charge-offs	(1,031)	(289)	(1,567)
Recoveries	256	487	1,363
Provision for (Reduction of) Loan Losses	2,369	3,339	4,386
Foreign Currency Translation Adjustments	(25)	(41)	75
Ending Balance	$ 21,506	$ 19,937	$ 16,441

Loans, Allowance for Loan Lo_11

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Activity in Allowance for Unfunded Commitments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Activity in Allowance for Unfunded Commitments [Abstract]
Allowance for unfunded credit commitments, beginning balance	$ 55,183	$ 51,770	$ 45,265
Provision for unfunded credit commitments	12,233	3,578	6,365
Foreign currency translation adjustments	240	(165)	140
Allowance for unfunded credit commitments, ending balance	$ 67,656	$ 55,183	$ 51,770

Loans, Allowance for Loan Lo_12

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Allowance for Loan Losses Individually and Collectively Evaluated for Impairment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Individually Evaluated for Impairment	$ 44,859	$ 37,941
Financing Receivable, Individually Evaluated for Impairment	153,009	170,074
Collectively Evaluated for Impairment	260,065	242,962
Financing Receivable, Collectively Evaluated for Impairment	33,011,627	28,168,206
Commercial loans
Financing Receivable, Impaired [Line Items]
Individually Evaluated for Impairment	44,648	37,675
Financing Receivable, Individually Evaluated for Impairment	147,529	165,835
Collectively Evaluated for Impairment	238,770	223,291
Financing Receivable, Collectively Evaluated for Impairment	29,240,421	25,138,802
Commercial loans \| Software/internet
Financing Receivable, Impaired [Line Items]
Individually Evaluated for Impairment	26,613	28,527
Financing Receivable, Individually Evaluated for Impairment	95,572	114,850
Collectively Evaluated for Impairment	73,610	75,040
Financing Receivable, Collectively Evaluated for Impairment	6,103,976	6,039,905
Commercial loans \| Hardware
Financing Receivable, Impaired [Line Items]
Individually Evaluated for Impairment	1,214	1,253
Financing Receivable, Individually Evaluated for Impairment	5,458	11,506
Collectively Evaluated for Impairment	18,430	18,472
Financing Receivable, Collectively Evaluated for Impairment	1,365,701	1,223,051
Commercial loans \| Private equity/venture capital
Financing Receivable, Impaired [Line Items]
Individually Evaluated for Impairment	0	0
Financing Receivable, Individually Evaluated for Impairment	0	3,700
Collectively Evaluated for Impairment	115,805	98,581
Financing Receivable, Collectively Evaluated for Impairment	17,801,324	14,106,860
Commercial loans \| Life science/healthcare
Financing Receivable, Impaired [Line Items]
Individually Evaluated for Impairment	16,414	7,484
Financing Receivable, Individually Evaluated for Impairment	31,612	34,067
Collectively Evaluated for Impairment	22,831	24,696
Financing Receivable, Collectively Evaluated for Impairment	2,336,436	2,351,545
Commercial loans \| Premium wine
Financing Receivable, Impaired [Line Items]
Individually Evaluated for Impairment	204	0
Financing Receivable, Individually Evaluated for Impairment	11,922	1,301
Collectively Evaluated for Impairment	4,944	3,355
Financing Receivable, Collectively Evaluated for Impairment	1,076,295	958,362
Commercial loans \| Other
Financing Receivable, Impaired [Line Items]
Individually Evaluated for Impairment	203	411
Financing Receivable, Individually Evaluated for Impairment	2,965	411
Collectively Evaluated for Impairment	3,150	3,147
Financing Receivable, Collectively Evaluated for Impairment	556,689	459,079
Consumer loans
Financing Receivable, Impaired [Line Items]
Individually Evaluated for Impairment	211	266
Financing Receivable, Individually Evaluated for Impairment	5,480	4,239
Collectively Evaluated for Impairment	21,295	19,671
Financing Receivable, Collectively Evaluated for Impairment	$ 3,771,206	$ 3,029,404

Loans, Allowance for Loan Lo_13

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Credit Quality Indicators, Broken out by Portfolio Segment and Class of Financing Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	$ 33,327,704	$ 28,511,312
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	32,361,879	27,492,604
Performing (Criticized)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	812,816	848,634
Performing Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	50,340	75,932
Non Performing Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	102,669	94,142
Commercial loans
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	29,553,981	25,480,947
Commercial loans \| Software/internet
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	6,255,866	6,209,978
Commercial loans \| Hardware
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	1,381,025	1,245,800
Commercial loans \| Private equity/venture capital
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	17,817,390	14,118,132
Commercial loans \| Life science/healthcare
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	2,427,680	2,461,076
Commercial loans \| Premium wine
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	1,089,576	960,553
Commercial loans \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	582,444	485,408
Commercial loans \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	28,605,228	24,488,572
Commercial loans \| Pass \| Software/internet
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	5,704,283	5,574,332
Commercial loans \| Pass \| Hardware
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	1,266,077	1,146,985
Commercial loans \| Pass \| Private equity/venture capital
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	17,813,128	14,098,281
Commercial loans \| Pass \| Life science/healthcare
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	2,197,679	2,291,356
Commercial loans \| Pass \| Premium wine
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	1,053,021	909,965
Commercial loans \| Pass \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	571,040	467,653
Commercial loans \| Performing (Criticized)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	801,224	826,540
Commercial loans \| Performing (Criticized) \| Software/internet
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	456,011	520,796
Commercial loans \| Performing (Criticized) \| Hardware
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	109,490	87,309
Commercial loans \| Performing (Criticized) \| Private equity/venture capital
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	4,262	16,151
Commercial loans \| Performing (Criticized) \| Life science/healthcare
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	198,389	135,653
Commercial loans \| Performing (Criticized) \| Premium wine
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	24,633	49,287
Commercial loans \| Performing (Criticized) \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	8,439	17,344
Commercial loans \| Performing Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	50,340	75,612
Commercial loans \| Performing Impaired \| Software/internet
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	28,417	48,069
Commercial loans \| Performing Impaired \| Hardware
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	3,315	10,250
Commercial loans \| Performing Impaired \| Private equity/venture capital
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	0	0
Commercial loans \| Performing Impaired \| Life science/healthcare
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	5,211	16,276
Commercial loans \| Performing Impaired \| Premium wine
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	11,717	1,017
Commercial loans \| Performing Impaired \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	1,680	0
Commercial loans \| Non Performing Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	97,189	90,223
Commercial loans \| Non Performing Impaired \| Software/internet
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	67,155	66,781
Commercial loans \| Non Performing Impaired \| Hardware
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	2,143	1,256
Commercial loans \| Non Performing Impaired \| Private equity/venture capital
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	0	3,700
Commercial loans \| Non Performing Impaired \| Life science/healthcare
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	26,401	17,791
Commercial loans \| Non Performing Impaired \| Premium wine
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	205	284
Commercial loans \| Non Performing Impaired \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	1,285	411
Consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	3,773,723	3,030,365
Consumer loans \| Real estate secured loans
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	3,283,445	2,609,645
Consumer loans \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	490,278	420,720
Consumer loans \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	3,756,651	3,004,032
Consumer loans \| Pass \| Real estate secured loans
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	3,266,748	2,584,261
Consumer loans \| Pass \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	489,903	419,771
Consumer loans \| Performing (Criticized)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	11,592	22,094
Consumer loans \| Performing (Criticized) \| Real estate secured loans
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	11,217	21,145
Consumer loans \| Performing (Criticized) \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	375	949
Consumer loans \| Performing Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	0	320
Consumer loans \| Performing Impaired \| Real estate secured loans
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	0	320
Consumer loans \| Performing Impaired \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	0	0
Consumer loans \| Non Performing Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	5,480	3,919
Consumer loans \| Non Performing Impaired \| Real estate secured loans
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	5,480	3,919
Consumer loans \| Non Performing Impaired \| Other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable	$ 0	$ 0

Loans, Allowance for Loan Lo_14

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Summary of Loans Modified in Troubled Debt Restructurings (TDRs) by Portfolio Segment and Class of Financing Receivables (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)troubled_debt_restructuring	Dec. 31, 2018USD ($)troubled_debt_restructuring
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of TDRs \| troubled_debt_restructuring	23	17
Loans modified in TDRs	$ 108,982	$ 83,695
Commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	106,878	83,375
Commercial loans \| Software/internet
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	71,136	58,089
Commercial loans \| Hardware
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	1,685	9,665
Commercial loans \| Life science/healthcare
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	20,600	12,738
Commercial loans \| Premium wine
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	13,457	2,883
Consumer loans \| Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	$ 2,104	$ 320

Loans, Allowance for Loan Lo_15

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Recorded Investment in Loans Modified in TDRs (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)troubled_debt_restructuring	Dec. 31, 2018USD ($)troubled_debt_restructuring	Dec. 31, 2017USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of TDRs \| troubled_debt_restructuring	23	17
Loans modified in TDRs during the period	$ 90,171	$ 41,074	$ 93,843
Partial charge-offs on loans classified as TDRs	11,300	4,600	3,000
Commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	88,378	40,754	93,843
Commercial loans \| Software/internet
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	62,367	30,429	42,184
Commercial loans \| Hardware
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	1,685	9,665	51,132
Commercial loans \| Private equity/venture capital
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	0	0	350
Commercial loans \| Life science/healthcare
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	13,309	660	0
Commercial loans \| Premium wine
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	11,017	0	177
Consumer loans \| Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	1,793	320	0
Payment deferrals
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	86,900	$ 41,100	93,500
Partial forgiveness of principal
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	$ 3,300		$ 300

Loans, Allowance for Loan Lo_16

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	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Troubled Debt Restructuring [Line Items]
TDRs modified within the previous 12 months that defaulted in the period	$ 47,933	$ 0	$ 0
Commercial loans \| Software/internet
Financing Receivable, Troubled Debt Restructuring [Line Items]
TDRs modified within the previous 12 months that defaulted in the period	37,294	0	0
Commercial loans \| Life science/healthcare
Financing Receivable, Troubled Debt Restructuring [Line Items]
TDRs modified within the previous 12 months that defaulted in the period	$ 10,639	$ 0	$ 0

Premises and Equipment - Summar

Premises and Equipment - Summary of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Computer software	$ 261,643	$ 217,017
Computer hardware	82,643	70,247
Leasehold improvements	121,907	98,237
Furniture and equipment	46,300	42,319
Total	512,493	427,820
Accumulated depreciation and amortization	(350,617)	(298,607)
Premises and equipment, net	$ 161,876	$ 129,213

Premises and Equipment - Additi

Premises and Equipment - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Depreciation and amortization expense	$ 42	$ 38.1	$ 38

Leases - Lease Assets and Liabi

Leases - Lease Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Lease right-of-use assets	$ 197,365	$ 146,000	$ 0
Lease liabilities	218,847	$ 178,000	$ 0
SVB Leerink
Lessee, Lease, Description [Line Items]
Lease right-of-use assets	21,700
Lease liabilities	$ 30,000

Leases - Lease Expense Componen

Leases - Lease Expense Components (Details) $ in Thousands	12 Months Ended
Leases - Lease Expense Components (Details) $ in Thousands	Dec. 31, 2019USD ($)
Leases [Abstract]
Operating lease cost	$ 41,049
Short-term lease cost	1,823
Variable lease cost	3,477
Less: sublease income	(4,492)
Total lease expense, net	41,857
Cash paid for operating leases	44,976
Lease obligations in exchange for obtaining right-of-use assets, operating leases	$ 33,167
Weighted-average remaining term (in years) - operating leases	6 years 3 months 14 days
Weighted-average discount rate - operating leases	2.92%

Leases - Schedule of Future Lea

Leases - Schedule of Future Lease Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Leases [Abstract]
2020	$ 44,791
2021	42,683
2022	37,669
2023	36,914
2024	26,602
2025 and thereafter	52,128
Total lease payments	240,787
Less: imputed interest	(21,940)
Total lease liability	218,847	$ 178,000	$ 0
Operating leases not yet commenced	$ 29,100
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	5 years

Leases - Operating Leases, Futu

Leases - Operating Leases, Future Minimum Payments Due (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Leases [Abstract]
2019	$ 38,609
2020	37,575
2021	35,854
2022	31,659
2023	30,904
2024 and thereafter	49,071
Total minimum future payments	223,672
Rent expense for premises and equipment leased under operating leases	$ 34,600	$ 31,300

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Jan. 04, 2019	Dec. 31, 2018
Goodwill [Line Items]
Intangible assets	$ 60,900,000
Goodwill	137,823,000		$ 0
Amortization expense	11,500,000
Goodwill impairment	$ 0
SVB Leerink
Goodwill [Line Items]
Intangible assets		$ 60,900,000
Goodwill		$ 137,823,000

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Goodwill (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Beginning balance at December 31, 2018	$ 0
Acquisitions	137,823
Ending balance at December 31, 2019	$ 137,823

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Other Intangible Assets (Details) $ in Thousands	Dec. 31, 2019USD ($)
Other intangible assets:
Estimated Fair Value	$ 60,900
Accumulated Amortization	11,483
Net Carrying Amount	49,417
Customer relationships
Other intangible assets:
Estimated Fair Value	42,000
Accumulated Amortization	3,818
Net Carrying Amount	38,182
Other
Other intangible assets:
Estimated Fair Value	18,900
Accumulated Amortization	7,665
Net Carrying Amount	$ 11,235

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Future Amortization Expense (Details) $ in Thousands	Dec. 31, 2019USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2020	$ 5,382
2021	4,732
2022	4,732
2023	4,732
2024	4,732
2025 and thereafter	25,107
Net Carrying Amount	$ 49,417

Deposits - Composition of Depos

Deposits - Composition of Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deposits [Abstract]
Noninterest-bearing demand deposits	$ 40,841,570	$ 39,103,422
Interest bearing checking and savings	568,256	648,468
Money market	17,749,736	7,498,205
Money market deposits in foreign offices	352,437	152,781
Sweep deposits in foreign offices	2,057,715	1,875,298
Time	188,093	50,726
Total deposits	$ 61,757,807	$ 49,328,900

Deposits - Additional Informati

Deposits - Additional Information (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deposits [Abstract]
Time deposits equal to or greater than $250,000	$ 180	$ 42
Time deposits equal to or greater than $250,000 maturing within one year	$ 177

Short-Term Borrowings and Lon_3

Short-Term Borrowings and Long-Term Debt - Outstanding Short Term Borrowings and Long Term Debt (Details) - USD ($)	Dec. 31, 2019	Dec. 20, 2019	Dec. 31, 2018	Jan. 31, 2015	Sep. 30, 2010
Debt Outstanding [Line Items]
Short-term borrowings	$ 17,430,000		$ 631,412,000
Total long-term debt	$ 347,987,000		$ 696,465,000
3.50% Senior Notes
Debt Outstanding [Line Items]
Principal value				$ 350,000,000
Stated interest rate	3.50%		3.50%
5.375% Senior Notes
Debt Outstanding [Line Items]
Principal value		$ 350,000,000			$ 350,000,000
Stated interest rate	5.375%
Senior Notes \| 3.50% Senior Notes
Debt Outstanding [Line Items]
Principal value	$ 350,000,000
Total long-term debt	347,987,000		$ 347,639,000
Senior Notes \| 5.375% Senior Notes
Debt Outstanding [Line Items]
Total long-term debt	0		$ 348,826,000
Stated interest rate			5.375%
Short-term FHLB advances
Debt Outstanding [Line Items]
Short-term borrowings	0		$ 300,000,000
Securities sold under agreement to repurchase
Debt Outstanding [Line Items]
Short-term borrowings	0		319,414,000
Other short-term borrowings
Debt Outstanding [Line Items]
Principal value	17,430,000
Short-term borrowings	$ 17,430,000		$ 11,998,000

Short-Term Borrowings and Lon_4

Short-Term Borrowings and Long-Term Debt - Aggregate Annual Maturities of Long-Term Debt Obligations (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
2020	$ 0
2021	0
2022	0
2023	0
2024	0
2025 and thereafter	347,987
Total	$ 347,987	$ 696,465

Short-Term Borrowings and Lon_5

Short-Term Borrowings and Long-Term Debt - Interest Expense and Senior Notes (Details) - USD ($)	Dec. 20, 2019	Jan. 31, 2015	Sep. 30, 2010	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Interest expense on debt				$ 35,100,000	$ 46,600,000	$ 36,100,000
Weighted average interest rate on short-term borrowings					2.62%
Debt Instrument [Line Items]
Long-term debt				347,987,000	$ 696,465,000
3.50% Senior Notes
Debt Instrument [Line Items]
Principal value		$ 350,000,000
Proceeds from issuance of senior notes, net of discount and issuance cost		$ 346,400,000
Debt issuance costs				1,800,000
Discount on debt				200,000
5.375% Senior Notes
Debt Instrument [Line Items]
Principal value	$ 350,000,000		$ 350,000,000
Proceeds from issuance of senior notes, net of discount and issuance cost			345,000,000
Payments for settlement of 3.875% Convertible Notes			$ 250,000,000
Debt Instrument, Redemption Price	358,400,000
Redemption Premium	$ 9,000,000
Senior Notes \| 3.50% Senior Notes
Debt Instrument [Line Items]
Principal value				350,000,000
Long-term debt				347,987,000	347,639,000
Senior Notes \| 5.375% Senior Notes
Debt Instrument [Line Items]
Long-term debt				$ 0	$ 348,826,000

Short-Term Borrowings and Lon_6

Short-Term Borrowings and Long-Term Debt - Short-term Borrowings (Details) $ in Billions	Dec. 31, 2019USD ($)
Short-term FHLB advances
Short-term Debt [Line Items]
FHLB advances	$ 4.7
Amount of unused FHLB credit facility	4.3
FRB advances
Short-term Debt [Line Items]
Carrying value of collateral pledged	1
Line of credit, remaining borrowing capacity	1
Uncommitted federal funds lines
Short-term Debt [Line Items]
Line of credit, remaining borrowing capacity	1.9
Master repurchase agreements
Short-term Debt [Line Items]
Line of credit, remaining borrowing capacity	$ 3.3

Derivative Financial Instrume_3

Derivative Financial Instruments - Total Notional or Contractual Amounts, Fair Value, Collateral and Net Exposure of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Maximum length of time over which forecasted transactions are hedged	5 years
Derivative [Line Items]
Fair Value, Derivative Assets	$ 167,341	$ 108,901
Fair Value, Derivative Liabilities	137,984	98,050
Total Derivative Assets, Fair Value	332,814	258,139
Total Derivative Liabilities, Fair Value	137,984	98,050
Interest rate swaps
Derivative [Line Items]
Fair Value, Derivative Assets	22,676
Fair Value, Derivative Liabilities	25,623
Foreign exchange forwards
Derivative [Line Items]
Fair Value, Derivative Assets	114,546	98,643
Fair Value, Derivative Liabilities	96,899	86,800
Client foreign currency options
Derivative [Line Items]
Fair Value, Derivative Assets	1,308	1,759
Fair Value, Derivative Liabilities	1,308	1,759
Client interest rate derivatives
Derivative [Line Items]
Fair Value, Derivative Assets	28,811	8,499
Fair Value, Derivative Liabilities	14,154	9,491
Derivatives designated as hedging instruments \| Interest rate swaps \| Other assets
Derivative [Line Items]
Derivative Assets, Notional or Contractual Amount	1,915,000	0
Fair Value, Derivative Assets	22,676	0
Derivatives designated as hedging instruments \| Interest rate swaps \| Other liability
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	3,085,000	0
Fair Value, Derivative Liabilities	25,623	0
Derivatives not designated as hedging instruments
Derivative [Line Items]
Fair Value, Derivative Assets	310,138	258,139
Fair Value, Derivative Liabilities	112,361	98,050
Derivatives not designated as hedging instruments \| Foreign exchange forwards \| Other assets
Derivative [Line Items]
Derivative Assets, Notional or Contractual Amount	0	263,733
Fair Value, Derivative Assets	0	4,767
Derivatives not designated as hedging instruments \| Foreign exchange forwards \| Other liability
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	300,250	178,310
Fair Value, Derivative Liabilities	2,154	1,094
Derivatives not designated as hedging instruments \| Equity warrant assets \| Other assets
Derivative [Line Items]
Derivative Assets, Notional or Contractual Amount	225,893	223,532
Fair Value, Derivative Assets	165,473	149,238
Derivatives not designated as hedging instruments \| Client foreign exchange forwards \| Other assets
Derivative [Line Items]
Derivative Assets, Notional or Contractual Amount	4,661,517	2,759,878
Fair Value, Derivative Assets	114,546	93,876
Derivatives not designated as hedging instruments \| Client foreign exchange forwards \| Other liability
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	4,326,059	2,568,085
Fair Value, Derivative Liabilities	94,745	85,706
Derivatives not designated as hedging instruments \| Client foreign currency options \| Other assets
Derivative [Line Items]
Derivative Assets, Notional or Contractual Amount	154,985	93,556
Fair Value, Derivative Assets	1,308	1,759
Derivatives not designated as hedging instruments \| Client foreign currency options \| Other liability
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	154,985	93,579
Fair Value, Derivative Liabilities	1,308	1,759
Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other assets
Derivative [Line Items]
Derivative Assets, Notional or Contractual Amount	1,275,190	1,020,416
Fair Value, Derivative Assets	28,811	8,499
Reduction in derivative assets due to rules of clearing houses		(400)
Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other liability
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	1,372,914	1,337,328
Fair Value, Derivative Liabilities	14,154	$ 9,491
Reduction in derivative liabilities due to rules of clearing houses	$ (17,400)

Derivative Financial Instrume_4

Derivative Financial Instruments - Summary of Derivative Activity and Related Impact on Consolidated Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest rate risks \| Derivatives designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	$ (5,358)	$ 0	$ 1,046
Interest rate risks \| Derivatives designated as hedging instruments \| Interest income—loans
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	(5,358)	0	0
Interest rate risks \| Derivatives designated as hedging instruments \| Interest expense—borrowings
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	0	0	1,053
Interest rate risks \| Derivatives designated as hedging instruments \| Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	0	0	(7)
Foreign exchange forward and option contracts \| Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	(409)	(321)	875
Foreign exchange forward and option contracts \| 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	1,444	(373)	33,161
Foreign exchange forward and option contracts \| 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	(1,853)	52	(32,286)
Other derivative instruments \| Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	754	987	913
Other derivative instruments \| Derivatives not designated as hedging instruments \| Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	(1,190)	(179)	(564)
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	(15,146)	4,998	10,882
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	15,900	(4,011)	(9,969)
Equity warrant assets
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	(2,240)	24,417	11,862
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	$ 138,078	$ 89,142	$ 54,555

Derivative Financial Instrume_5

Derivative Financial Instruments - Balance Sheet Offsetting, Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Derivative Assets
Gross Amounts of Recognized Assets	$ 167,341	$ 108,901
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	167,341	108,901
Financial Instruments	(89,112)	(47,242)
Cash Collateral Received	(17,430)	(11,998)
Net Amount	60,799	49,661
Reverse repurchase, securities borrowing, and similar arrangements
Gross Amounts of Recognized Assets	289,340	123,611
Gross Amounts offset in the Statement of Financial Position	0	0
Securities purchased under agreements to resell	289,340	123,611
Financial Instruments	(289,340)	(123,611)
Cash Collateral Received	0	0
Net Amount	0	0
Total
Gross Amounts of Recognized Assets	456,681	232,512
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	456,681	232,512
Financial Instruments	(378,452)	(170,853)
Cash Collateral Received	(17,430)	(11,998)
Net Amount	60,799	49,661
Interest rate swaps
Derivative Assets
Gross Amounts of Recognized Assets	22,676
Gross Amounts offset in the Statement of Financial Position	0
Net Amounts of Assets Presented in the Statement of Financial Position	22,676
Financial Instruments	(22,598)
Cash Collateral Received	0
Net Amount	78
Foreign exchange forwards
Derivative Assets
Gross Amounts of Recognized Assets	114,546	98,643
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	114,546	98,643
Financial Instruments	(36,855)	(38,213)
Cash Collateral Received	(17,095)	(11,825)
Net Amount	60,596	48,605
Client foreign currency options
Derivative Assets
Gross Amounts of Recognized Assets	1,308	1,759
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	1,308	1,759
Financial Instruments	(848)	(613)
Cash Collateral Received	(335)	(90)
Net Amount	125	1,056
Client interest rate derivatives
Derivative Assets
Gross Amounts of Recognized Assets	28,811	8,499
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	28,811	8,499
Financial Instruments	(28,811)	(8,416)
Cash Collateral Received	0	(83)
Net Amount	$ 0	$ 0

Derivative Financial Instrume_6

Derivative Financial Instruments - Balance Sheet Offsetting, Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Derivative Liabilities
Gross Amounts of Recognized Liabilities	$ 137,984	$ 98,050
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	137,984	98,050
Financial Instruments	(56,521)	(25,832)
Cash Collateral Pledged	(38,913)	(29,939)
Net Amount	42,550	42,279
Repurchase, securities lending, and similar arrangements
Securities Sold under Agreements to Repurchase, Gross	0	319,414
Securities Sold under Agreements to Repurchase, Asset	0	0
Securities Sold under Agreements to Repurchase	0	319,414
Financial Instruments	0	0
Cash Collateral Pledged	0	0
Net Amount	0	319,414
Total
Gross Amounts of Recognized Liabilities	137,984	417,464
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	137,984	417,464
Financial Instruments	(56,521)	(25,832)
Cash Collateral Pledged	(38,913)	(29,939)
Net Amount	42,550	361,693
Interest rate swaps
Derivative Liabilities
Gross Amounts of Recognized Liabilities	25,623
Gross Amounts offset in the Statement of Financial Position	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	25,623
Financial Instruments	(22,676)
Cash Collateral Pledged	(2,947)
Net Amount	0
Foreign exchange forwards
Derivative Liabilities
Gross Amounts of Recognized Liabilities	96,899	86,800
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	96,899	86,800
Financial Instruments	(33,314)	(24,778)
Cash Collateral Pledged	(22,030)	(20,732)
Net Amount	41,555	41,290
Client foreign currency options
Derivative Liabilities
Gross Amounts of Recognized Liabilities	1,308	1,759
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	1,308	1,759
Financial Instruments	(531)	(1,054)
Cash Collateral Pledged	0	0
Net Amount	777	705
Client interest rate derivatives
Derivative Liabilities
Gross Amounts of Recognized Liabilities	14,154	9,491
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	14,154	9,491
Financial Instruments	0	0
Cash Collateral Pledged	(13,936)	(9,207)
Net Amount	$ 218	$ 284

Noninterest Income - Summary of

Noninterest Income - Summary of Noninterest Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue from Contract with Customer [Abstract]
Gains on investment securities, net									$ 134,670	$ 88,094	$ 64,603
Gains on equity warrant assets, net									138,078	89,142	54,555
Client investment fees									182,068	130,360	56,136
Foreign exchange fees									159,262	138,812	115,760
Credit card fees									118,719	94,072	76,543
Deposit service charges									89,200	76,097	58,715
Lending related fees									49,920	41,949	43,265
Letters of credit and standby letters of credit fees									42,669	34,600	28,544
Investment banking revenue									195,177	0	0
Commissions									56,346	0	0
Other									55,370	51,858	59,110
Noninterest income	$ 313,344	$ 294,009	$ 333,750	$ 280,376	$ 186,707	$ 210,070	$ 192,689	$ 155,518	$ 1,221,479	$ 744,984	$ 557,231

Noninterest Income - Gains on I

Noninterest Income - Gains on Investment Securities, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue from Contract with Customer [Abstract]
Gains on non-marketable and other equity securities, net	$ 138,575	$ 88,834	$ 69,792
Losses on sales of available-for-sale debt securities, net	(3,905)	(740)	(5,189)
Gains on investment securities, net	$ 134,670	$ 88,094	$ 64,603

Noninterest Income - Gains on E

Noninterest Income - Gains on Equity Warrant Assets, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue from Contract with Customer [Abstract]
Gains on exercises, net	$ 107,168	$ 58,186	$ 48,275
Terminations	(3,502)	(5,964)	(4,422)
Changes in fair value, net	34,412	36,920	10,702
Gains on equity warrant assets, net	$ 138,078	$ 89,142	$ 54,555

Noninterest Income - Client Inv

Noninterest Income - Client Investment Fees (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 880,951	$ 511,656
Sweep money market fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	104,236	75,654	$ 28,485
Asset management fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	28,665	23,882	16,831
Repurchase agreement fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	49,167	30,824	10,820
Client investment fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 182,068	$ 130,360	$ 56,136

Noninterest Income - Foreign Ex

Noninterest Income - Foreign Exchange Fees (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 880,951	$ 511,656
Revenue not from contracts with customer	340,528	233,328
Foreign exchange fees	159,262	138,812	$ 115,760
Spot contract commissions
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	145,915	127,459	104,344
Forward contract commissions
Disaggregation of Revenue [Line Items]
Revenue not from contracts with customer	13,068	10,940	10,934
Option premium fees
Disaggregation of Revenue [Line Items]
Revenue not from contracts with customer	$ 279	$ 413	$ 482

Noninterest Income - Credit Car

Noninterest Income - Credit Card Fees (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Card interchange fees, net	$ 93,553	$ 74,381	$ 60,224
Revenue from contracts with customers	880,951	511,656
Revenue not from contracts with customer	340,528	233,328
Total credit card fees	118,719	94,072	76,543
Merchant service fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	18,355	14,420	11,584
Card service fees
Disaggregation of Revenue [Line Items]
Revenue not from contracts with customer	$ 6,811	$ 5,271	$ 4,735

Noninterest Income - Lending Re

Noninterest Income - Lending Related Fees (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Lending related fees	$ 49,920	$ 41,949	$ 43,265
Unused commitment fees
Disaggregation of Revenue [Line Items]
Lending related fees	34,829	32,452	34,110
Other
Disaggregation of Revenue [Line Items]
Lending related fees	$ 15,091	$ 9,497	$ 9,155

Noninterest Income - Investment

Noninterest Income - Investment Banking Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue from Contract with Customer [Abstract]
Underwriting fees	$ 153,306	$ 0	$ 0
Advisory fees	37,846	0	0
Private placements and other	4,025	0	0
Total investment banking revenue	$ 195,177	$ 0	$ 0

Noninterest Income - Summary _2

Noninterest Income - Summary of Other Noninterest Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 880,951	$ 511,656
Net gains (losses) on revaluation of foreign currency instruments, net of foreign exchange forward contracts(1)	345	666	$ 1,788
(Losses) gains on extinguishment of debt	(8,960)	0	2,731
Other service revenue	31,463	28,176	33,377
Other	55,370	51,858	59,110
Fund management fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 32,522	$ 23,016	$ 21,214

Noninterest Income - Disaggrega

Noninterest Income - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									$ 880,951	$ 511,656
Revenue not from contracts with customer									340,528	233,328
Noninterest income	$ 313,344	$ 294,009	$ 333,750	$ 280,376	$ 186,707	$ 210,070	$ 192,689	$ 155,518	1,221,479	744,984	$ 557,231
Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									592,185	483,918
Revenue not from contracts with customer									45,737	36,384
Noninterest income									637,922	520,302
SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									2,563	2,329
Revenue not from contracts with customer									803	(48)
Noninterest income									3,366	2,281
SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									26,850	23,016
Revenue not from contracts with customer									95,544	78,165
Noninterest income									122,394	101,181
SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									257,195
Revenue not from contracts with customer									7,321
Noninterest income									264,516
Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									2,158	2,393
Revenue not from contracts with customer									191,123	118,827
Noninterest income									193,281	121,220
Client investment fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									182,068	130,360	56,136
Client investment fees \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									180,152	128,834
Client investment fees \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									1,916	1,526
Client investment fees \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0	0
Client investment fees \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0
Client investment fees \| Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0	0
Spot contract commissions
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									145,915	127,459	104,344
Spot contract commissions \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									144,930	126,445
Spot contract commissions \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									510	691
Spot contract commissions \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0	0
Spot contract commissions \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0
Spot contract commissions \| Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									475	323
Card interchange fees, gross
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									154,953	134,502
Card interchange fees, gross \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									154,197	134,074
Card interchange fees, gross \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0	0
Card interchange fees, gross \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0	0
Card interchange fees, gross \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0
Card interchange fees, gross \| Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									756	428
Merchant service fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									18,355	14,420
Merchant service fees \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									18,355	14,415
Merchant service fees \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0	4
Merchant service fees \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0	0
Merchant service fees \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0
Merchant service fees \| Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0	1
Deposit service charges
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									89,200	76,097
Deposit service charges \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									88,136	74,348
Deposit service charges \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									137	108
Deposit service charges \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0	0
Deposit service charges \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0
Deposit service charges \| Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									927	1,641
Investment banking revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									195,177
Investment banking revenue \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0
Investment banking revenue \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0
Investment banking revenue \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0
Investment banking revenue \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									195,177
Investment banking revenue \| Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0
Commissions
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									56,346
Commissions \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0
Commissions \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0
Commissions \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0
Commissions \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									56,346
Commissions \| Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0
Fund management fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									32,522	23,016	$ 21,214
Fund management fees \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0	0
Fund management fees \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0	0
Fund management fees \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									26,850	23,016
Fund management fees \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									5,672
Fund management fees \| Other Income
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									6,415	5,802
Correspondent bank rebates \| Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									6,415	5,802
Correspondent bank rebates \| SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0	0
Correspondent bank rebates \| SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0	0
Correspondent bank rebates \| SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0
Correspondent bank rebates \| Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									$ 0	$ 0

Other Noninterest Expense (Deta

Other Noninterest Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Income and Expenses [Abstract]
Lending and other client related processing costs	$ 28,491	$ 24,237	$ 23,768
Correspondent bank fees	14,503	13,713	12,976
Investment banking activities	13,733	0	0
Trade order execution costs	10,813	0	0
Telephone	9,861	9,404	10,647
Data processing services	12,536	10,811	10,251
Dues and publications	4,603	4,605	3,263
Postage and supplies	3,198	2,799	2,797
Other	54,841	21,682	21,419
Total other noninterest expense	$ 152,579	$ 87,251	$ 85,121

Income Taxes - Components of Pr

Income Taxes - Components of Provision for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current provision:
Federal									$ 296,400	$ 249,358	$ 263,231
State									132,357	123,264	67,046
Deferred expense (benefit):
Federal									(1,530)	(11,777)	24,654
State									(1,542)	(9,284)	532
Income tax expense	$ 94,061	$ 105,075	$ 119,114	$ 107,435	$ 105,000	$ 95,308	$ 77,287	$ 73,966	$ 425,685	$ 351,561	$ 355,463

Income Taxes - Reconciliation b

Income Taxes - Reconciliation between Federal Statutory Income Tax Rate and Effective Income Tax Rate (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	21.00%	21.00%	35.00%
State income taxes, net of the federal tax effect	7.00%	7.20%	5.80%
Net deferred tax assets revaluation (TCJ Act)	0.00%	0.00%	4.30%
Meals and entertainment	0.40%	0.30%	0.30%
Disallowed officer's compensation	0.20%	0.20%	0.10%
FDIC premiums	0.20%	0.50%	0.00%
Share-based compensation expense on incentive stock options and ESPP	(0.60%)	(1.40%)	(2.10%)
Qualified affordable housing project tax credits	(0.30%)	(0.30%)	(0.40%)
Tax-exempt interest income	(0.60%)	(0.60%)	(0.30%)
Other, net	(0.10%)	(0.40%)	(0.70%)
Effective income tax rate	27.20%	26.50%	42.00%

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Allowance for loan losses	$ 103,267	$ 93,580
Net unrealized losses on AFS debt securities	0	19,704
Share-based compensation expense	14,233	10,642
State income taxes	16,097	13,854
Accrued compensation	22,578	8,291
Deferred rent	0	7,940
Lease liability	60,635	0
Other accruals	12,383	7,061
Net operating loss	6,386	2,447
Goodwill and intangibles	3,141	0
Other	7,923	11,339
Deferred tax assets	246,643	174,858
Valuation allowance	(5,919)	(2,107)
Net deferred tax assets after valuation allowance	240,724	172,751
Deferred tax liabilities:
Derivative equity warrant assets	(45,533)	(32,861)
Change in accounting method (section 481(a))	(1,841)	(8,034)
Net unrealized gains on AFS debt securities	(33,480)	0
Non-marketable and other equity securities	(54,239)	(45,759)
Premises and equipment and other intangibles	(16,459)	(10,284)
Right-of-use asset and deferred rent assets	(50,493)	0
Other	(10,246)	(10,380)
Deferred tax liabilities	(212,291)	(107,318)
Net deferred tax assets	$ 28,433	$ 65,433

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Loss Carryforwards [Line Items]
Valuation allowance	$ (5,919)	$ (2,107)
Unrecognized tax benefit	13,778	14,139	$ 12,683	$ 5,711
Unrecognized tax benefits that if recognized would reduce income tax expense	9,900
Reconciliation of Unrecognized Tax Benefit
Operating Loss Carryforwards [Line Items]
Unrecognized tax benefit	12,612	12,689	$ 11,505	$ 5,269
Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	2,200	2,200
Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 20,800	$ 7,600

Income Taxes - Changes in Unrec

Income Taxes - Changes in Unrecognized Tax Benefit (Including Interest and Penalties) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Beginning Balance	$ 14,139	$ 12,683	$ 5,711
Additions for tax positions for current year	3,712	4,171	3,141
Additions for tax positions for prior years	889	1,454	4,132
Reduction for tax positions for prior years	(1,408)	(2,108)	(224)
Lapse of the applicable statute of limitations	(2,395)	(521)	(77)
Reduction as a result of settlement	(1,159)	(1,540)
Ending Balance	13,778	14,139	12,683
Reconciliation of Unrecognized Tax Benefit
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Beginning Balance	12,689	11,505	5,269
Additions for tax positions for current year	3,712	4,171	3,141
Additions for tax positions for prior years	63	631	3,378
Reduction for tax positions for prior years	(884)	(1,865)	(223)
Lapse of the applicable statute of limitations	(1,826)	(435)	(60)
Reduction as a result of settlement	(1,142)	(1,318)
Ending Balance	12,612	12,689	11,505
Interest and Penalties
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Beginning Balance	1,450	1,178	442
Additions for tax positions for current year	0	0	0
Additions for tax positions for prior years	826	823	754
Reduction for tax positions for prior years	(524)	(243)	(1)
Lapse of the applicable statute of limitations	(569)	(86)	(17)
Reduction as a result of settlement	(17)	(222)
Ending Balance	$ 1,166	$ 1,450	$ 1,178

Employee Compensation and Ben_3

Employee Compensation and Benefit Plans - Expenses Incurred Under Certain Employee Compensation and Benefit Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Incentive Compensation Plan	$ 143,888	$ 160,293	$ 125,584
Direct Drive Incentive Compensation Plan	37,315	40,578	18,721
Retention Program	2,438	1,438	1,317
Warrant Incentive Plan	14,881	9,112	15,386
Deferred Compensation Plan	0	0	203
SVBFG 401(k) Plan	25,687	21,323	17,860
SVBFG ESOP	4,197	6,435	4,719
SVB Leerink
Segment Reporting Information [Line Items]
Incentive Compensation Plan	106,871	0	0
Retention Award	$ 12,015	$ 0	$ 0

Employee Compensation and Ben_4

Employee Compensation and Benefit Plans - Additional Information (Details) - USD ($)	Jan. 04, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Employee Benefits Disclosure [Line Items]
Maximum percentage of base salary that may be deferred under the DC Plan		50.00%
Maximum percentage of eligible bonus payment that may be deferred under the DC Plan		100.00%
Deferrals under the DC Plan		$ 6,900,000	$ 5,500,000	$ 5,500,000
DC Plan investment gains (losses)		$ 6,900,000	(1,700,000)	4,700,000
Amortization period		30 years
EHOP loan term, option one		5 years
EHOP loan term, option three		10 years
Employee Home Ownership Program, Fixed Rate Loan Term, Option Two		30 years
Maximum loan amount percentage lesser of purchase price or the appraised value		85.00%
Employee Home Ownership Program, Loan Term, Option Two		7 years
Employee Home Ownership Program, Fixed Rate Loan Term, Option One		15 years
SVB Leerink
Employee Benefits Disclosure [Line Items]
Incentive Compensation Plan, Deferred Portion Of Compensation Settled In Restricted Stock Awards		25.00%
Incentive Compensation Plan, Deferred Portion Of Compensation Settled In Cash		75.00%
Incentive Compensation Plan, Deferred Compensation Vesting Period		5 years
Retention pool for acquiree employees	$ 60,000,000
Retention Award, Deferred Portion Of Compensation Settled In Cash		50.00%
Retention Award, Deferred Portion Of Compensation Settled In Restricted Stock Awards		50.00%
Vesting period of retention pool for acquiree employees	5 years
Employee Home Ownership Plan \| 12 month LIBOR
Employee Benefits Disclosure [Line Items]
Basis spread on EHOP loans		2.25%
Defined Contribution Plan, The 401(k) Plan
Employee Benefits Disclosure [Line Items]
Maximum percentage of pre-tax income employees are allowed to contribute towards 401(k) plan		75.00%
Maximum annual amount allowable for employee contributions		$ 19,000	$ 18,500	$ 18,000
Maximum percentage of employer matching contributions towards 401(k) plan		5.00%
Employee Stock Ownership Plan (ESOP), Plan
Employee Benefits Disclosure [Line Items]
Maximum percentage of employee's eligible pay earned in the fiscal year contributed by the company in cash or common stock towards ESOP		10.00%
ESOP contributions vesting period		5 years

Off-Balance Sheet Arrangement_3

Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Summary Information Related to Commitments to Extend Credit (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Fixed interest rate commitments	$ 2,434,042	$ 1,839,190
Variable interest rate commitments	19,309,317	14,821,815
Total loan commitments available for funding	21,743,359	16,661,005
Commercial and standby letters of credit	2,778,561	2,252,016
Total unfunded credit commitments	24,521,920	18,913,021
Commitments unavailable for funding	3,051,075	2,723,835
Allowance for unfunded credit commitments	$ 67,656	$ 55,183	$ 51,770	$ 45,265

Off-Balance Sheet Arrangement_4

Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Summary of Commercial and Standby Letters of Credit (Details) $ in Thousands	Dec. 31, 2019USD ($)
Other Commitments [Line Items]
Expires In One Year or Less	$ 2,679,736
Expires After One Year	98,825
Total Amount Outstanding	2,778,561
Maximum Amount of Future Payments	2,778,561
Financial standby letters of credit
Other Commitments [Line Items]
Expires In One Year or Less	2,566,623
Expires After One Year	79,207
Total Amount Outstanding	2,645,830
Maximum Amount of Future Payments	2,645,830
Performance standby letters of credit
Other Commitments [Line Items]
Expires In One Year or Less	105,993
Expires After One Year	19,618
Total Amount Outstanding	125,611
Maximum Amount of Future Payments	125,611
Commercial letters of credit
Other Commitments [Line Items]
Expires In One Year or Less	7,120
Expires After One Year	0
Total Amount Outstanding	7,120
Maximum Amount of Future Payments	$ 7,120

Off-Balance Sheet Arrangement_5

Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Consolidated venture capital and private equity fund investments
Commitments and Contingencies Disclosure [Line Items]
Commitments Expiration Period	10 years
Consolidated venture capital and private equity fund investments \| Lower Limit
Commitments and Contingencies Disclosure [Line Items]
Fund Commitments Investment Cycle	5 years
Consolidated venture capital and private equity fund investments \| Upper Limit
Commitments and Contingencies Disclosure [Line Items]
Fund Commitments Investment Cycle	7 years
Standby Letter of Credit
Commitments and Contingencies Disclosure [Line Items]
Deferred revenue	$ 17.2	$ 14.1
Collateral in the form of cash	$ 1,600

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	12 Months Ended
	Dec. 31, 2019USD ($)Investment	Dec. 31, 2018
Other Commitments [Line Items]
SVBFG Unfunded Commitments	$ 5,346
Capital Preferred Return Fund, LP
Other Commitments [Line Items]
SVBFG Unfunded Commitments	1,540
Growth Partners, LP
Other Commitments [Line Items]
SVBFG Unfunded Commitments	2,468
Strategic Investors Fund, LP
Other Commitments [Line Items]
SVBFG Unfunded Commitments	$ 1,338
Consolidated venture capital and private equity fund investments \| CP II, LP \| Non-marketable securities \| Direct ownership interest
Other Commitments [Line Items]
SVBFG Ownership interest percentage	1.30%
Consolidated venture capital and private equity fund investments \| CP II, LP \| Non-marketable securities \| Indirect ownership interest
Other Commitments [Line Items]
SVBFG Ownership interest percentage	3.80%
Upper Limit
Other Commitments [Line Items]
SVBFG Ownership interest percentage	5.00%	5.00%
Equity method accounting \| Consolidated venture capital and private equity fund investments \| CP II, LP \| Non-marketable securities
Other Commitments [Line Items]
SVBFG Ownership interest percentage	5.10%	5.10%
Equity method accounting \| Consolidated venture capital and private equity fund investments \| CP II, LP \| Non-marketable securities \| Direct ownership interest
Other Commitments [Line Items]
SVBFG Ownership interest percentage	1.30%
Equity method accounting \| Consolidated venture capital and private equity fund investments \| CP II, LP \| Non-marketable securities \| Indirect ownership interest
Other Commitments [Line Items]
SVBFG Ownership interest percentage	3.80%
Equity method accounting \| Consolidated venture capital and private equity fund investments \| Strategic Investors Fund II, LP \| Non-marketable securities
Other Commitments [Line Items]
SVBFG Ownership interest percentage	8.60%	8.60%
Equity method accounting \| Consolidated venture capital and private equity fund investments \| Strategic Investors Fund III, LP \| Non-marketable securities
Other Commitments [Line Items]
SVBFG Ownership interest percentage	5.90%	5.90%
Equity method accounting \| Consolidated venture capital and private equity fund investments \| Strategic Investors Fund IV, LP \| Non-marketable securities
Other Commitments [Line Items]
SVBFG Ownership interest percentage	5.00%	5.00%
Equity method accounting \| Consolidated venture capital and private equity fund investments \| Other fund investments \| Non-marketable securities
Other Commitments [Line Items]
Number of other funds with investment commitments \| Investment	211
Equity method accounting \| Upper Limit \| Consolidated venture capital and private equity fund investments \| Other fund investments \| Non-marketable securities
Other Commitments [Line Items]
SVBFG Ownership interest percentage	5.00%
Parent Company
Other Commitments [Line Items]
SVBFG Capital Commitments	$ 467,664
SVBFG Unfunded Commitments	19,092
Parent Company \| CP II, LP
Other Commitments [Line Items]
SVBFG Capital Commitments	1,200
SVBFG Unfunded Commitments	$ 162
SVBFG Ownership interest percentage	5.10%
Parent Company \| Strategic Investors Fund II, LP
Other Commitments [Line Items]
SVBFG Capital Commitments	$ 15,000
SVBFG Unfunded Commitments	$ 1,050
SVBFG Ownership interest percentage	8.60%
Parent Company \| Strategic Investors Fund III, LP
Other Commitments [Line Items]
SVBFG Capital Commitments	$ 15,000
SVBFG Unfunded Commitments	$ 1,275
SVBFG Ownership interest percentage	5.90%
Parent Company \| Strategic Investors Fund IV, LP
Other Commitments [Line Items]
SVBFG Capital Commitments	$ 12,239
SVBFG Unfunded Commitments	$ 2,325
SVBFG Ownership interest percentage	5.00%
Parent Company \| Strategic Investors Fund V funds
Other Commitments [Line Items]
SVBFG Capital Commitments	$ 515
SVBFG Unfunded Commitments	131
Parent Company \| Other venture capital and private equity fund investments
Other Commitments [Line Items]
SVBFG Capital Commitments	21,801
SVBFG Unfunded Commitments	5,732
Parent Company \| Debt funds (equity method accounting)
Other Commitments [Line Items]
SVBFG Capital Commitments	58,493
SVBFG Unfunded Commitments	0
Parent Company \| Other fund investments
Other Commitments [Line Items]
SVBFG Capital Commitments	284,758
SVBFG Unfunded Commitments	6,119
Parent Company \| CP I, LP
Other Commitments [Line Items]
SVBFG Capital Commitments	6,000
SVBFG Unfunded Commitments	$ 270
SVBFG Ownership interest percentage	10.70%
Parent Company \| Capital Preferred Return Fund, LP
Other Commitments [Line Items]
SVBFG Capital Commitments	$ 12,688
SVBFG Unfunded Commitments	$ 0
SVBFG Ownership interest percentage	20.00%
Parent Company \| Growth Partners, LP
Other Commitments [Line Items]
SVBFG Capital Commitments	$ 24,670
SVBFG Unfunded Commitments	$ 1,340
SVBFG Ownership interest percentage	33.00%
Parent Company \| Strategic Investors Fund, LP
Other Commitments [Line Items]
SVBFG Capital Commitments	$ 15,300
SVBFG Unfunded Commitments	$ 688
SVBFG Ownership interest percentage	12.60%

Off-Balance Sheet Arrangement_7

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	Dec. 31, 2019USD ($)
Other Commitments [Line Items]
Unfunded Commitments	$ 5,346
Strategic Investors Fund, LP
Other Commitments [Line Items]
Unfunded Commitments	1,338
Capital Preferred Return Fund, LP
Other Commitments [Line Items]
Unfunded Commitments	1,540
Growth Partners, LP
Other Commitments [Line Items]
Unfunded Commitments	$ 2,468

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	$ 14,014,919	$ 7,790,043
Fair Value, Derivative Assets	167,341	108,901
Fair Value, Derivative Liabilities	137,984	98,050
Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	22,676
Fair Value, Derivative Liabilities	25,623
Client interest rate derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	28,811	8,499
Fair Value, Derivative Liabilities	14,154	9,491
Derivatives not designated as hedging instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	310,138	258,139
Fair Value, Derivative Liabilities	112,361	98,050
Derivatives not designated as hedging instruments \| Equity warrant assets \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	165,473	149,238
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]
Fair Value, Derivative Assets	28,811	8,499
Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	14,154	9,491
U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	6,894,010	4,738,258
U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	99,547	1,084,117
Foreign government debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	9,038	5,812
Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	4,148,791
Residential mortgage-backed securities \| Fixed rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	1,538,343	1,880,218
Residential mortgage-backed securities \| Variable rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		81,638
Agency-issued commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	1,325,190
Measured on a recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	14,014,919	7,790,043
Total assets	14,672,330	8,388,011
Total liabilities	137,984	98,050
Measured on a recurring basis \| Derivatives not designated as hedging instruments \| Foreign exchange forward and option contracts \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	115,854	100,402
Measured on a recurring basis \| Derivatives not designated as hedging instruments \| Foreign exchange forward and option contracts \| Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	98,207	88,559
Measured on a recurring basis \| Derivatives not designated as hedging instruments \| Equity warrant assets \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	165,473	149,238
Measured on a recurring basis \| Derivatives not designated as hedging instruments \| Interest rate swaps \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	22,676
Measured on a recurring basis \| Derivatives not designated as hedging instruments \| Interest rate swaps \| Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	25,623
Measured on a recurring basis \| 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]
Fair Value, Derivative Assets	28,811	8,499
Measured on a recurring basis \| Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	14,154	9,491
Measured on a recurring basis \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonmarketable securities	324,597	339,829
Measured on a recurring basis \| Consolidated venture capital and private equity fund investments \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonmarketable securities	134	1,079
Measured on a recurring basis \| Other securities \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonmarketable securities	59,200	20,398
Measured on a recurring basis \| U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	6,894,010	4,738,258
Measured on a recurring basis \| U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	99,547	1,084,117
Measured on a recurring basis \| Foreign government debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	9,038	5,812
Measured on a recurring basis \| Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	4,148,791
Measured on a recurring basis \| Residential mortgage-backed securities \| Fixed rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	1,538,343	1,880,218
Measured on a recurring basis \| Residential mortgage-backed securities \| Variable rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		81,638
Measured on a recurring basis \| Agency-issued commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	1,325,190
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	6,903,048	4,744,070
Total assets	6,920,338	4,745,251
Total liabilities	0	0
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Derivatives not designated as hedging instruments \| Foreign exchange forward and option contracts \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	0	0
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Derivatives not designated as hedging instruments \| Foreign exchange forward and option contracts \| Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	0	0
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (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]
Fair Value, Derivative Assets	0	0
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (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]
Fair Value, Derivative Assets	0
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Derivatives not designated as hedging instruments \| Interest rate swaps \| Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	0
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (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]
Fair Value, Derivative Assets	0	0
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	0	0
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonmarketable securities	17,290	1,181
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (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]
Nonmarketable securities	0	0
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Other securities \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonmarketable securities	17,290	1,181
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	6,894,010	4,738,258
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Foreign government debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	9,038	5,812
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Residential mortgage-backed securities \| Fixed rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Residential mortgage-backed securities \| Variable rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		0
Measured on a recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Agency-issued commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0
Measured on a recurring basis \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	7,111,871	3,045,973
Total assets	7,325,557	3,178,130
Total liabilities	137,984	98,050
Measured on a recurring basis \| Significant Other Observable Inputs (Level 2) \| Derivatives not designated as hedging instruments \| Foreign exchange forward and option contracts \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	115,854	100,402
Measured on a recurring basis \| Significant Other Observable Inputs (Level 2) \| Derivatives not designated as hedging instruments \| Foreign exchange forward and option contracts \| Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	98,207	88,559
Measured on a recurring basis \| Significant Other Observable Inputs (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]
Fair Value, Derivative Assets	4,435	4,039
Measured on a recurring basis \| Significant Other Observable Inputs (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]
Fair Value, Derivative Assets	22,676
Measured on a recurring basis \| Significant Other Observable Inputs (Level 2) \| Derivatives not designated as hedging instruments \| Interest rate swaps \| Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	25,623
Measured on a recurring basis \| Significant Other Observable Inputs (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]
Fair Value, Derivative Assets	28,811	8,499
Measured on a recurring basis \| Significant Other Observable Inputs (Level 2) \| Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	14,154	9,491
Measured on a recurring basis \| Significant Other Observable Inputs (Level 2) \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonmarketable securities	41,910	19,217
Measured on a recurring basis \| Significant Other Observable Inputs (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]
Nonmarketable securities	0	0
Measured on a recurring basis \| Significant Other Observable Inputs (Level 2) \| Other securities \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonmarketable securities	41,910	19,217
Measured on a recurring basis \| Significant Other Observable Inputs (Level 2) \| U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Measured on a recurring basis \| Significant Other Observable Inputs (Level 2) \| U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	99,547	1,084,117
Measured on a recurring basis \| Significant Other Observable Inputs (Level 2) \| Foreign government debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Measured on a recurring basis \| Significant Other Observable Inputs (Level 2) \| Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	4,148,791
Measured on a recurring basis \| Significant Other Observable Inputs (Level 2) \| Residential mortgage-backed securities \| Fixed rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	1,538,343	1,880,218
Measured on a recurring basis \| Significant Other Observable Inputs (Level 2) \| Residential mortgage-backed securities \| Variable rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		81,638
Measured on a recurring basis \| Significant Other Observable Inputs (Level 2) \| Agency-issued commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	1,325,190
Measured on a recurring basis \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Total assets	161,172	146,278
Total liabilities	0	0
Measured on a recurring basis \| Significant Unobservable Inputs (Level 3) \| Derivatives not designated as hedging instruments \| Foreign exchange forward and option contracts \| Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Assets	0	0
Measured on a recurring basis \| Significant Unobservable Inputs (Level 3) \| Derivatives not designated as hedging instruments \| Foreign exchange forward and option contracts \| Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	0	0
Measured on a recurring basis \| Significant Unobservable Inputs (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]
Fair Value, Derivative Assets	161,038	145,199
Measured on a recurring basis \| Significant Unobservable Inputs (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]
Fair Value, Derivative Assets	0
Measured on a recurring basis \| Significant Unobservable Inputs (Level 3) \| Derivatives not designated as hedging instruments \| Interest rate swaps \| Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	0
Measured on a recurring basis \| Significant Unobservable Inputs (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]
Fair Value, Derivative Assets	0	0
Measured on a recurring basis \| Significant Unobservable Inputs (Level 3) \| Derivatives not designated as hedging instruments \| Client interest rate derivatives \| Other liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Derivative Liabilities	0	0
Measured on a recurring basis \| Significant Unobservable Inputs (Level 3) \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonmarketable securities	134	1,079
Measured on a recurring basis \| Significant Unobservable Inputs (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]
Nonmarketable securities	134	1,079
Measured on a recurring basis \| Significant Unobservable Inputs (Level 3) \| Other securities \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonmarketable securities	0	0
Measured on a recurring basis \| Significant Unobservable Inputs (Level 3) \| U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Measured on a recurring basis \| Significant Unobservable Inputs (Level 3) \| U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Measured on a recurring basis \| Significant Unobservable Inputs (Level 3) \| Foreign government debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Measured on a recurring basis \| Significant Unobservable Inputs (Level 3) \| Residential mortgage-backed securities \| Agency-issued mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0
Measured on a recurring basis \| Significant Unobservable Inputs (Level 3) \| Residential mortgage-backed securities \| Fixed rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Measured on a recurring basis \| Significant Unobservable Inputs (Level 3) \| Residential mortgage-backed securities \| Variable rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		0
Measured on a recurring basis \| Significant Unobservable Inputs (Level 3) \| Agency-issued commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0
Measured on a recurring basis \| 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]
Nonmarketable securities	$ 265,263	$ 318,352

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Footnote Information) (Details) - Measured on a recurring basis - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	$ 14,672,330	$ 8,388,011
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	161,172	146,278
Significant Unobservable Inputs (Level 3) \| Noncontrolling Interests
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	$ 120	$ 964

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Additional Information about Level 3 Assets Measured at Fair Value on a Recurring Basis (Details) - Measured on a recurring basis - Fair value accounting - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 146,278	$ 122,250	$ 130,853
Total Realized and Unrealized Gains (Losses) Included in Income	133,922	88,439	55,234
Purchases	575	0	0
Sales/Exits	(131,352)	(78,752)	(76,861)
Issuances	16,453	17,941	14,537
Distributions and Other Settlements	3	(297)	0
Transfers Out of Level 3	(4,707)	(3,303)	(1,513)
Ending Balance	161,172	146,278	122,250
Equity warrant assets
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	145,199	121,331	128,813
Total Realized and Unrealized Gains (Losses) Included in Income	133,910	87,982	54,263
Purchases	575	0	0
Sales/Exits	(130,392)	(78,752)	(74,769)
Issuances	16,453	17,941	14,537
Distributions and Other Settlements	0	0	0
Transfers Out of Level 3	(4,707)	(3,303)	(1,513)
Ending Balance	161,038	145,199	121,331
Non-marketable securities \| Unconsolidated venture capital and private equity fund investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	1,079	919	2,040
Total Realized and Unrealized Gains (Losses) Included in Income	12	457	971
Purchases	0	0	0
Sales/Exits	(960)	0	(2,092)
Issuances	0	0	0
Distributions and Other Settlements	3	(297)	0
Transfers Out of Level 3	0	0	0
Ending Balance	$ 134	$ 1,079	$ 919

Fair Value of Financial Instr_6

Fair Value of Financial Instruments - Unrealized Gains Included in Earnings Attributable to Level 3 Assets Held (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total unrealized gains, net	$ 34,469	$ 37,724
Unrealized (losses) gains attributable to noncontrolling interests	(199)	143
Venture capital and private equity funds \| Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total unrealized gains, net	(222)	160
Equity warrant assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total unrealized gains, net	$ 34,691	$ 37,564

Fair Value of Financial Instr_7

Fair Value of Financial Instruments - Quantitative Information About Significant Unobservable Inputs (Details) - Significant Unobservable Inputs (Level 3) $ in Thousands	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Equity warrant assets (private portfolio)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 160,692	$ 142,442
Equity warrant assets (public portfolio)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	346	2,757
Venture capital and private equity fund investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 134	$ 1,079
Volatility \| Equity warrant assets (private portfolio)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average	0.382	0.385
Volatility \| Equity warrant assets (public portfolio)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average	0.507	0.547
Risk-Free Interest Rate \| Equity warrant assets (private portfolio)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average	0.016	0.025
Risk-Free Interest Rate \| Equity warrant assets (public portfolio)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average	0.019	0.026
Sales restrictions discount \| Equity warrant assets (public portfolio)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average	0.136	0.185
Marketability discount \| Equity warrant assets (private portfolio)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average	0.175	0.177
Remaining life assumption \| Equity warrant assets (private portfolio)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average	0.450	0.450

Fair Value of Financial Instr_8

Fair Value of Financial Instruments - Quantitative Information About Significant Unobservable Inputs (Footnote Information) (Details)	12 Months Ended
	Dec. 31, 2019
Equity warrant assets (public portfolio) \| Lower Limit
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Duration of the sale restrictions	3 months
Equity warrant assets (public portfolio) \| Upper Limit
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Duration of the sale restrictions	6 months
Equity warrant assets (public portfolio) \| Sales restrictions discount \| Lower Limit
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average	0.10
Equity warrant assets (public portfolio) \| Sales restrictions discount \| Upper Limit
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average	0.20
Equity warrant assets (private portfolio)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted average contractual remaining term	6 years 1 month 6 days
Estimated remaining life	2 years 9 months 18 days

Fair Value of Financial Instr_9

Fair Value of Financial Instruments - Summary of Estimated Fair Values of Financial Instruments not Carried at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held-to-maturity securities	$ 14,115,272	$ 15,188,236
Net loans	32,859,712	28,057,377
Time deposits	188,093	50,726
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	6,781,783	3,571,539
Held-to-maturity securities	13,842,946	15,487,442
Non-marketable securities not measured at net asset value	195,405	131,453
Non-marketable securities measured at net asset value	235,351	151,247
FHLB and FRB stock	60,258	58,878
Non-maturity deposits	61,569,714	49,278,174
Time deposits	188,093	50,726
Commitments to extend credit	0	0
Carrying Amount \| Other short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	17,430	631,412
Carrying Amount \| 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior Notes	347,987	347,639
Carrying Amount \| 5.375% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior Notes		348,826
Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	6,781,783	3,571,539
Held-to-maturity securities	14,115,272	15,188,236
Non-marketable securities not measured at net asset value	195,405	131,453
Non-marketable securities measured at net asset value	235,351	151,247
FHLB and FRB stock	60,258	58,878
Non-maturity deposits	61,569,714	49,278,174
Time deposits	187,980	50,337
Commitments to extend credit	27,197	22,930
Estimated Fair Value \| Other short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	17,430	631,412
Estimated Fair Value \| 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior Notes	366,856	336,088
Estimated Fair Value \| 5.375% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior Notes		361,281
Estimated Fair Value \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	6,781,783	3,571,539
Held-to-maturity securities	0	0
Non-marketable securities not measured at net asset value	0	0
FHLB and FRB stock	0	0
Non-maturity deposits	61,569,714	49,278,174
Time deposits	0	0
Commitments to extend credit	0	0
Estimated Fair Value \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Other short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	0	0
Estimated Fair Value \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| 5.375% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior Notes		0
Estimated Fair Value \| Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Held-to-maturity securities	14,115,272	15,188,236
Non-marketable securities not measured at net asset value	0	0
FHLB and FRB stock	0	0
Non-maturity deposits	0	0
Time deposits	187,980	50,337
Commitments to extend credit	0	0
Estimated Fair Value \| Significant Other Observable Inputs (Level 2) \| Other short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	17,430	631,412
Estimated Fair Value \| Significant Other Observable Inputs (Level 2) \| 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior Notes	366,856	336,088
Estimated Fair Value \| Significant Other Observable Inputs (Level 2) \| 5.375% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior Notes		361,281
Estimated Fair Value \| Significant Unobservable Inputs (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	195,405	131,453
FHLB and FRB stock	60,258	58,878
Non-maturity deposits	0	0
Time deposits	0	0
Commitments to extend credit	27,197	22,930
Estimated Fair Value \| Significant Unobservable Inputs (Level 3) \| Other short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	0	0
Estimated Fair Value \| Significant Unobservable Inputs (Level 3) \| 5.375% 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	29,104,532	25,043,671
Commercial loans \| Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	29,615,176	25,463,968
Commercial loans \| Estimated Fair Value \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	0	0
Commercial loans \| Estimated Fair Value \| Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	0	0
Commercial loans \| Estimated Fair Value \| Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	29,615,176	25,463,968
Consumer loans \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	3,755,180	3,013,706
Consumer loans \| Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	3,820,804	3,064,093
Consumer loans \| Estimated Fair Value \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	0	0
Consumer loans \| Estimated Fair Value \| Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	0	0
Consumer loans \| Estimated Fair Value \| Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	$ 3,820,804	$ 3,064,093

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 (Details) $ in Thousands	Dec. 31, 2019USD ($)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Carrying Amount	$ 500,614
Fair Value	500,614
Unfunded Commitments	22,140
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	265,263
Fair Value	265,263
Unfunded Commitments	10,579
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	215,367
Fair Value	215,367
Unfunded Commitments	10,675
Non-marketable securities \| Debt funds \| Equity method accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Carrying Amount	7,271
Fair Value	7,271
Unfunded Commitments	0
Non-marketable securities \| Other investments \| Equity method accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Carrying Amount	12,713
Fair Value	12,713
Unfunded Commitments	$ 886

Fair Value of Financial Inst_11

Fair Value of Financial Instruments - Summary of Estimated Fair Values of Investments and Remaining Unfunded Commitments for Each Major Category of Investments (Footnote Information) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	$ 500,614
Unfunded commitments	22,140
Non-marketable securities \| Fair value accounting \| Consolidated venture capital and private equity fund investments
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	265,263
Unfunded commitments	10,579
Non-marketable securities \| Fair value accounting \| Noncontrolling Interests \| Consolidated venture capital and private equity fund investments
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	64,600
Unfunded commitments	$ 4,000
Non-marketable securities \| Fair value accounting \| Lower Limit \| Consolidated venture capital and private equity fund investments
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Estimated future period of distributions from the fund investments	10 years
Non-marketable securities \| Fair value accounting \| Upper Limit \| Consolidated venture capital and private equity fund investments
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Estimated future period of distributions from the fund investments	13 years
Non-marketable securities \| Equity method accounting \| Consolidated venture capital and private equity fund investments
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	$ 215,367
Unfunded commitments	10,675
Non-marketable securities \| Equity method accounting \| Other investments
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	12,713
Unfunded commitments	$ 886
Non-marketable securities \| Equity method accounting \| Lower Limit \| Other investments
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Estimated future period of distributions from the fund investments	5 years
Non-marketable securities \| Equity method accounting \| Upper Limit \| Other investments
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Estimated future period of distributions from the fund investments	8 years

Regulatory Matters - Capital Ra

Regulatory Matters - Capital Ratios for Company and Bank under Federal Regulatory Guidelines (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
SVB Financial Group
CET 1 risk-based capital, Actual Capital Ratios	12.58%	13.41%
CET 1 risk-based capital, Required Capital Ratios	7.00%	6.40%
CET 1 risk-based capital, Actual Capital Amounts	$ 5,857,744	$ 5,167,270
CET 1 risk-based capital, Required Capital Amounts	$ 3,260,424	$ 2,456,151
Tier 1 risk-based capital, Actual Capital Ratios	13.43%	13.58%
Tier 1 risk-based capital, Required Capital Ratios	8.50%	7.90%
Tier 1 risk-based capital, Well Capitalized Capital Ratios	6.00%	6.00%
Tier 1 risk-based capital, Actual Capital Amounts	$ 6,257,442	$ 5,231,476
Tier 1 risk-based capital, Required Capital Amounts	3,959,086	3,034,068
Tier 1 risk-based capital, Well Capitalized Capital Amounts	$ 2,794,649	$ 2,311,671
Total risk-based capital, Actual Capital Ratios	14.23%	14.45%
Total risk-based capital, Required Capital Ratios	10.50%	9.90%
Total risk-based capital, Well Capitalized Capital Ratios	10.00%	10.00%
Total risk-based capital, Actual Capital Amounts	$ 6,630,022	$ 5,567,562
Total risk-based capital, Required Capital Amounts	4,890,636	3,804,625
Total risk-based capital, Well Capitalized Capital Amounts	$ 4,657,748	$ 3,852,785
Tier 1 leverage, Actual Capital Ratios	9.06%	9.06%
Tier 1 leverage, Required Capital Ratios	4.00%	4.00%
Tier 1 leverage, Actual Capital Amounts	$ 6,257,442	$ 5,231,476
Tier 1 leverage, Required Capital Amounts	$ 2,763,146	$ 2,308,592
Silicon Valley Bank
CET 1 risk-based capital, Actual Capital Ratios	11.12%	12.41%
CET 1 risk-based capital, Required Capital Ratios	7.00%	6.40%
CET 1 risk-based capital, Well Capitalized Capital Ratios	6.50%	6.50%
CET 1 risk-based capital, Actual Capital Amounts	$ 4,949,393	$ 4,604,689
CET 1 risk-based capital, Required Capital Amounts	3,115,151	2,365,385
CET 1 risk-based capital, Well Capitalized Capital Amounts	$ 2,892,640	$ 2,411,765
Tier 1 risk-based capital, Actual Capital Ratios	11.12%	12.41%
Tier 1 risk-based capital, Required Capital Ratios	8.50%	7.90%
Tier 1 risk-based capital, Well Capitalized Capital Ratios	8.00%	8.00%
Tier 1 risk-based capital, Actual Capital Amounts	$ 4,949,393	$ 4,604,689
Tier 1 risk-based capital, Required Capital Amounts	3,782,683	2,921,946
Tier 1 risk-based capital, Well Capitalized Capital Amounts	$ 3,560,172	$ 2,968,326
Total risk-based capital, Actual Capital Ratios	11.96%	13.32%
Total risk-based capital, Required Capital Ratios	10.50%	9.90%
Total risk-based capital, Well Capitalized Capital Ratios	10.00%	10.00%
Total risk-based capital, Actual Capital Amounts	$ 5,321,850	$ 4,940,776
Total risk-based capital, Required Capital Amounts	4,672,726	3,664,028
Total risk-based capital, Well Capitalized Capital Amounts	$ 4,450,215	$ 3,710,408
Tier 1 leverage, Actual Capital Ratios	7.30%	8.10%
Tier 1 leverage, Required Capital Ratios	4.00%	4.00%
Tier 1 leverage, Well Capitalized Capital Ratios	5.00%	5.00%
Tier 1 leverage, Actual Capital Amounts	$ 4,949,393	$ 4,604,689
Tier 1 leverage, Required Capital Amounts	2,713,367	2,272,912
Tier 1 leverage, Well Capitalized Capital Amounts	$ 3,391,709	$ 2,841,139

Segment Reporting - Additional

Segment Reporting - Additional Information (Details)	12 Months Ended
Segment Reporting - Additional Information (Details)	Dec. 31, 2019Segment
Segment Reporting [Abstract]
Number of reportable segments	4

Segment Reporting - Segment Inf

Segment Reporting - Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Net interest income	$ 533,668	$ 520,644	$ 529,403	$ 512,886	$ 514,460	$ 493,222	$ 466,443	$ 419,863	$ 2,096,601	$ 1,893,988	$ 1,420,369
Provision for credit losses									(106,416)	(87,870)	(92,304)
Noninterest income	313,344	294,009	333,750	280,376	186,707	210,070	192,689	155,518	1,221,479	744,984	557,231
Noninterest expense	$ (460,752)	$ (391,324)	$ (383,522)	$ (365,664)	$ (307,592)	$ (309,445)	$ (305,739)	$ (265,417)	(1,601,262)	(1,188,193)	(1,010,655)
Income before income tax expense									1,610,402	1,362,909	874,641
Total average loans, net of unearned income									29,916,207	25,630,520	21,159,394
Total average assets									63,211,630	55,229,060	48,380,272
Total average deposits									55,056,950	48,075,344	42,745,148
Global Commercial Bank
Segment Reporting Information [Line Items]
Noninterest income									637,922	520,302
Income before income tax expense									1,521,645	1,269,678
SVB Private Bank
Segment Reporting Information [Line Items]
Noninterest income									3,366	2,281
Income before income tax expense									11,868	38,780
SVB Capital
Segment Reporting Information [Line Items]
Noninterest income									122,394	101,181
Income before income tax expense									91,634	78,412
SVB Leerink
Segment Reporting Information [Line Items]
Noninterest income									264,516
Income before income tax expense									13,090	0
Operating segments \| Global Commercial Bank
Segment Reporting Information [Line Items]
Net interest income									1,850,391	1,623,488	1,274,366
Provision for credit losses									(91,814)	(80,953)	(81,553)
Noninterest income									637,922	520,302	392,101
Noninterest expense									(874,854)	(793,159)	(707,666)
Income before income tax expense											877,248
Total average loans, net of unearned income									26,031,284	22,354,305	18,479,793
Total average assets									56,043,321	48,854,416	43,704,667
Total average deposits									53,053,665	46,039,570	41,043,731
Operating segments \| SVB Private Bank
Segment Reporting Information [Line Items]
Net interest income									51,022	64,902	58,131
Provision for credit losses									(2,369)	(3,339)	(4,386)
Noninterest income									3,366	2,281	2,175
Noninterest expense									(40,151)	(25,064)	(17,693)
Income before income tax expense											38,227
Total average loans, net of unearned income									3,341,188	2,850,271	2,423,078
Total average assets									3,371,052	2,871,743	2,445,220
Total average deposits									1,524,232	1,502,308	1,303,542
Operating segments \| SVB Capital
Segment Reporting Information [Line Items]
Net interest income									38	23	48
Provision for credit losses									0	0	0
Noninterest income									122,394	101,181	58,992
Noninterest expense									(30,798)	(22,792)	(19,340)
Income before income tax expense											39,700
Total average loans, net of unearned income									0	0	0
Total average assets									405,152	380,543	325,939
Total average deposits									0	0	0
Operating segments \| SVB Leerink
Segment Reporting Information [Line Items]
Net interest income									1,252	0	0
Provision for credit losses									0	0	0
Noninterest income									264,516	0	0
Noninterest expense									(252,678)	0	0
Income before income tax expense											0
Total average loans, net of unearned income									0	0	0
Total average assets									397,650	0	0
Total average deposits									0	0	0
Other Items
Segment Reporting Information [Line Items]
Net interest income									193,898	205,575	87,824
Provision for credit losses									(12,233)	(3,578)	(6,365)
Noninterest income									193,281	121,220	103,963
Noninterest expense									(402,781)	(347,178)	(265,956)
Income before income tax expense									(27,835)	(23,961)	(80,534)
Total average loans, net of unearned income									543,735	425,944	256,523
Total average assets									2,994,455	3,122,358	1,904,446
Total average deposits									$ 479,053	$ 533,466	$ 397,875

Segment Reporting - Segment I_2

Segment Reporting - Segment Information (Additional Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Goodwill	$ 137,823	$ 0
Operating segments \| Global Commercial Bank
Segment Reporting Information [Line Items]
Depreciation and amortization	20,400	$ 21,800	$ 25,300
Operating segments \| SVB Leerink
Segment Reporting Information [Line Items]
Goodwill	$ 137,800

Parent Company Only Condensed_3

Parent Company Only Condensed Financial Information - Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets:
Cash and cash equivalents	$ 6,781,783		$ 3,571,539	$ 2,923,075	$ 2,545,750
Investment securities	29,071,694		24,218,589
Net loans	32,859,712		28,057,377
Lease right-of-use assets	197,365	$ 146,000	0
Other assets	1,745,233		951,261
Total assets	71,004,903		56,927,979
Liabilities and total equity
Lease liabilities	218,847	$ 178,000	0
Other liabilities	2,041,752		1,006,359
Total liabilities	64,383,823		51,663,136
SVBFG stockholders' equity	6,470,307		5,116,209
Total liabilities and total equity	71,004,903		56,927,979
Parent Company
Assets:
Cash and cash equivalents	800,926		553,049	$ 457,324	$ 500,014
Investment securities	474,842		510,836
Net loans	15,245		0
Lease right-of-use assets	71,847		0
Other assets	214,167		204,301
Total assets	7,043,195		5,939,967
Liabilities and total equity
Other liabilities	136,903		127,293
Total liabilities	572,889		823,758
SVBFG stockholders' equity	6,470,306		5,116,209
Total liabilities and total equity	7,043,195		5,939,967
Parent Company \| 3.50% Senior Notes
Liabilities and total equity
Senior Notes	347,987		347,639
Parent Company \| 5.375% Senior Notes
Liabilities and total equity
Senior Notes	0		348,826
Lease liabilities	87,999		0
Parent Company \| Bank Subsidiary
Assets:
Investment in subsidiaries	5,034,095		4,554,813
Parent Company \| Nonbank Subsidiaries
Assets:
Investment in subsidiaries	$ 432,073		$ 116,968

Parent Company Only Condensed_4

Parent Company Only Condensed Financial Information - Condensed Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Income Statements, Captions [Line Items]
Interest income	$ 588,735	$ 583,892	$ 585,767	$ 551,014	$ 542,897	$ 513,313	$ 481,301	$ 432,398	$ 2,309,408	$ 1,969,909	$ 1,465,140
Interest expense	(55,067)	(63,248)	(56,364)	(38,128)	(28,437)	(20,091)	(14,858)	(12,535)	(212,807)	(75,921)	(44,771)
Gains on equity warrant assets, net									138,078	89,142	54,555
Gains on investment securities, net									134,670	88,094	64,603
Income tax (expense) benefit	(94,061)	(105,075)	(119,114)	(107,435)	(105,000)	(95,308)	(77,287)	(73,966)	(425,685)	(351,561)	(355,463)
Net income available to common stockholders	$ 262,856	$ 267,281	$ 317,987	$ 288,732	$ 266,264	$ 274,817	$ 237,798	$ 194,961	1,136,856	973,840	490,506
Parent Company
Condensed Income Statements, Captions [Line Items]
Interest income									4,473	3,307	2,077
Interest expense									(31,666)	(32,037)	(34,932)
Dividend income from bank subsidiary									733,000	140,000	90,000
Gains on equity warrant assets, net									138,078	89,142	54,555
Gains on investment securities, net									45,345	13,546	37,132
Fund management fees and other noninterest income									21,567	26,388	24,613
General and administrative expenses									(94,712)	(70,976)	(63,077)
Income tax (expense) benefit									(40,218)	(14,383)	10,367
Loss before net income of subsidiaries									775,867	154,987	120,735
Net income available to common stockholders									1,136,856	973,840	490,506
Parent Company \| Bank Subsidiary
Condensed Income Statements, Captions [Line Items]
Loss before net income of subsidiaries									1,036,618	933,641	446,769
Equity in undistributed net income of subsidiaries									303,618	793,641	356,769
Parent Company \| Nonbank Subsidiaries
Condensed Income Statements, Captions [Line Items]
Loss before net income of subsidiaries									57,371	25,212	13,002
Equity in undistributed net income of subsidiaries									$ 57,371	$ 25,212	$ 13,002

Parent Company Only Condensed_5

Parent Company Only Condensed Financial Information - Condensed Statements of Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Statement of Income Captions [Line Items]
Net income available to common stockholders	$ 262,856	$ 267,281	$ 317,987	$ 288,732	$ 266,264	$ 274,817	$ 237,798	$ 194,961	$ 1,136,856	$ 973,840	$ 490,506
Other comprehensive income (loss), net of tax									138,565	(52,648)	(24,902)
Comprehensive income attributable to SVBFG									1,275,421	921,192	465,604
Parent Company
Condensed Statement of Income Captions [Line Items]
Net income available to common stockholders									1,136,856	973,840	490,506
Foreign currency translation gains (losses)									2,319	(4,107)	3,769
Changes in fair value on cash flow hedges									(2,130)	0	0
Changes in unrealized holding gains and losses on AFS securities									2,310	120	22,285
Equity in other comprehensive income (loss) of bank and nonbank subsidiaries									136,066	(19,171)	(50,956)
Reclassifications to retained earnings for the adoption of new accounting guidance									0	(29,490)	0
Other comprehensive income (loss), net of tax									138,565	(52,648)	(24,902)
Comprehensive income attributable to SVBFG									$ 1,275,421	$ 921,192	$ 465,604

Parent Company Only Condensed_6

Parent Company Only Condensed Financial Information - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Adjustments to reconcile net income to net cash used for operating activities:
Gains on equity warrant assets, net	$ (138,078)	$ (89,142)	$ (54,555)
Gains on investment securities, net	(134,670)	(88,094)	(45,547)
Amortization of share-based compensation	66,815	45,675	36,900
Other, net	(74,240)	(54,039)	15,909
Net cash provided by operating activities	1,164,129	933,562	646,865
Cash flows from investing activities:
Net (increase) decrease in loans	(4,773,775)	(5,175,409)	(3,170,099)
Acquisition of SVB Leerink	102,328	0	0
Net cash used for investing activities	(9,371,882)	(4,800,375)	(5,970,496)
Cash flows from financing activities:
Principal payments of long-term debt	(358,395)	0	(97,781)
Proceeds from issuance of common stock, ESPP and ESOP	24,818	18,387	27,003
Net proceeds from the issuance of preferred stock	340,138	0	0
Common stock repurchase	(352,511)	(147,123)	0
Net cash provided by financing activities	11,417,997	4,515,277	5,700,956
Net increase in cash and cash equivalents	3,210,244	648,464	377,325
Cash and cash equivalents at beginning of period	3,571,539	2,923,075	2,545,750
Cash and cash equivalents at end of period	6,781,783	3,571,539	2,923,075
Parent Company
Condensed Cash Flow Statements, Captions [Line Items]
Net income available to common stockholders	1,136,856	973,840	490,506
Adjustments to reconcile net income to net cash used for operating activities:
Gains on equity warrant assets, net	(138,078)	(89,142)	(54,555)
Gains on investment securities, net	(45,345)	(13,546)	(17,060)
Distributions of earnings from investment securities	49,776	47,596	14,015
Net income of subsidiaries	(775,867)	(154,987)	(120,735)
Cash dividends from bank subsidiary	733,000	140,000	90,000
Amortization of share-based compensation	66,815	45,675	36,900
Decrease in other assets	27,205	51,169	12,959
Increase in other liabilities	21,391	21,619	11,774
Other, net	8,084	(31,024)	316
Net cash provided by operating activities	765,715	187,334	125,084
Cash flows from investing activities:
Net decrease (increase) in investment securities from purchases, sales and maturities	128,635	73,742	(152,015)
Net (increase) decrease in loans	(15,245)	0	13,337
Net cash used for investing activities	(171,888)	37,127	(143,231)
Cash flows from financing activities:
Principal payments of long-term debt	(358,395)	0	(51,546)
Proceeds from issuance of common stock, ESPP and ESOP	24,818	18,387	27,003
Net proceeds from the issuance of preferred stock	340,138	0	0
Common stock repurchase	352,511	147,123	0
Net cash provided by financing activities	(345,950)	(128,736)	(24,543)
Net increase in cash and cash equivalents	247,877	95,725	(42,690)
Cash and cash equivalents at beginning of period	553,049	457,324	500,014
Cash and cash equivalents at end of period	800,926	553,049	457,324
Bank Subsidiary \| Parent Company
Adjustments to reconcile net income to net cash used for operating activities:
Net income of subsidiaries	(1,036,618)	(933,641)	(446,769)
Cash flows from investing activities:
Increase (decrease) in investment in subsidiaries	(42,952)	(31,292)	(38,927)
Nonbank Subsidiaries \| Parent Company
Adjustments to reconcile net income to net cash used for operating activities:
Net income of subsidiaries	(57,371)	(25,212)	(13,002)
Cash flows from investing activities:
Increase (decrease) in investment in subsidiaries	23,275	(5,323)	34,374
Acquisition of SVB Leerink	$ 265,601	$ 0	$ 0

Unaudited Quarterly Financial_3

Unaudited Quarterly Financial Data - Supplemental Consolidated Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Interest income	$ 588,735	$ 583,892	$ 585,767	$ 551,014	$ 542,897	$ 513,313	$ 481,301	$ 432,398	$ 2,309,408	$ 1,969,909	$ 1,465,140
Interest expense	55,067	63,248	56,364	38,128	28,437	20,091	14,858	12,535	212,807	75,921	44,771
Net interest income	533,668	520,644	529,403	512,886	514,460	493,222	466,443	419,863	2,096,601	1,893,988	1,420,369
Provision for credit losses	17,383	36,536	23,946	28,551	13,644	17,174	29,080	27,972	106,416	87,870	92,304
Noninterest income	313,344	294,009	333,750	280,376	186,707	210,070	192,689	155,518	1,221,479	744,984	557,231
Noninterest expense	460,752	391,324	383,522	365,664	307,592	309,445	305,739	265,417	1,601,262	1,188,193	1,010,655
Income before income tax expense	368,877	386,793	455,685	399,047	379,931	376,673	324,313	281,992
Income tax expense	94,061	105,075	119,114	107,435	105,000	95,308	77,287	73,966	425,685	351,561	355,463
Net income before noncontrolling interests	274,816	281,718	336,571	291,612	274,931	281,365	247,026	208,026	1,184,717	1,011,348	519,178
Net income attributable to noncontrolling interests	(11,960)	(14,437)	(18,584)	(2,880)	(8,667)	(6,548)	(9,228)	(13,065)	(47,861)	(37,508)	(28,672)
Net income available to common stockholders	$ 262,856	$ 267,281	$ 317,987	$ 288,732	$ 266,264	$ 274,817	$ 237,798	$ 194,961	$ 1,136,856	$ 973,840	$ 490,506
Earnings per common share—basic (usd per share)	$ 5.10	$ 5.19	$ 6.12	$ 5.49	$ 5.01	$ 5.16	$ 4.48	$ 3.69	$ 21.90	$ 18.35	$ 9.33
Earnings per common share—diluted (usd per share)	$ 5.06	$ 5.15	$ 6.08	$ 5.44	$ 4.96	$ 5.10	$ 4.42	$ 3.63	$ 21.73	$ 18.11	$ 9.20

Uncategorized Items - sivb-1231

Label	Element	Value
Accounting Standards Update 2016-01 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 74,595,000
Accounting Standards Update 2016-01 [Member] \| Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	74,595,000
Accounting Standards Update 2016-01 [Member] \| AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(29,171,000)
Accounting Standards Update 2016-01 [Member] \| Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	103,766,000
Accounting Standards Update 2017-08 [Member] \| Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(583,000)	[1]
Accounting Standards Update 2014-09 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(5,802,000)
Accounting Standards Update 2014-09 [Member] \| Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(5,802,000)
Accounting Standards Update 2014-09 [Member] \| Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (5,802,000)

[1]	See Note 2- "Summary of Significant Accounting Policies" of the "Notes to Consolidated Financial Statements" under Part II, Item 8 of this report for additional details.