SVB Financial (SIVBQ) 10-Q 8 Nov 21 2021 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Oct. 31, 2021
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	001-39154
Entity Registrant Name	SVB FINANCIAL GROUP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	91-1962278
Entity Address, Address Line One	3003 Tasman Drive
Entity Address, City or Town	Santa Clara
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95054-1191
City Area Code	408
Local Phone Number	654-7400
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		58,687,392
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000719739
Amendment Flag	false
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	SIVB
Security Exchange Name	NASDAQ
Preferred Stock, Series A
Entity Information [Line Items]
Title of 12(b) Security	Depositary shares, each representing a 1/40th ownership interest in a share of 5.250% Fixed-Rate Non-Cumulative Perpetual Preferred Stock, Series A
Trading Symbol	SIVBP
Security Exchange Name	NASDAQ

Interim Consolidated Balance Sh

Interim Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Assets:
Cash and cash equivalents	$ 18,940	$ 17,675
Available-for-sale securities, at fair value (cost of $22,919 and $30,245, respectively)	22,984	30,913
Held-to-maturity securities, at amortized cost and net of allowance for credit losses of $6 and $0 (fair value of $81,995 and $17,217, respectively)	82,365	16,592
Non-marketable and other equity securities	2,485	1,802
Total investment securities	107,834	49,307
Loans, amortized cost	61,487	45,181
Allowance for credit losses: loans	(398)	(448)
Net loans	61,089	44,733
Premises and equipment, net of accumulated depreciation and amortization	247	176
Goodwill	344	143
Other intangible assets, net	156	61
Lease right-of-use assets	312	210
Accrued interest receivable and other assets	2,074	3,206
Total assets	190,996	115,511
Liabilities:
Noninterest-bearing demand deposits	115,388	66,519
Interest-bearing deposits	55,794	35,463
Total deposits	171,182	101,982
Short-term borrowings	97	21
Lease liabilities	390	259
Other liabilities	2,733	3,972
Long-term debt	1,925	844
Total liabilities	176,327	107,078
Commitments and contingencies (Note 12 and Note 15)
SVBFG stockholders’ equity:
Preferred stock, $0.001 par value, 20,000,000 shares authorized; 367,500 and 350,000 shares issued and outstanding, respectively	2,064	340
Common stock, $0.001 par value, 150,000,000 shares authorized; 58,677,483 shares and 51,888,463 shares issued and outstanding, respectively	0	0
Additional paid-in capital	5,100	1,585
Retained earnings	7,071	5,672
Accumulated other comprehensive income	65	623
Total SVBFG stockholders’ equity	14,300	8,220
Noncontrolling interests	369	213
Total equity	14,669	8,433
Total liabilities and total equity	$ 190,996	$ 115,511

Interim Consolidated Balance _2

Interim Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Available-for-sale, amortized cost	$ 22,919,000	$ 30,245,000
Held-to-maturity securities, allowance for credit losses	6,000	0
HTM securities	$ 81,995,000	$ 17,217,000
Preferred stock, par value, in usd per share	$ 0.001	$ 0.001
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	367,500	350,000
Preferred stock, shares outstanding	367,500	350,000
Common stock, par value, in usd per share	$ 0.001	$ 0.001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares, issued	58,677,483	51,888,463
Common stock, shares outstanding	58,677,483	51,888,463

Interim Consolidated Statements

Interim Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Interest income:
Loans	$ 519	$ 369	$ 1,422	$ 1,117
Investment securities:
Taxable	332	156	807	452
Non-taxable	28	15	73	42
Federal funds sold, securities purchased under agreements to resell and other short-term investment securities	5	3	12	23
Total interest income	884	543	2,314	1,634
Interest expense:
Deposits	19	8	41	51
Borrowings	13	7	33	18
Total interest expense	32	15	74	69
Net interest income	852	528	2,240	1,565
Provision for credit losses	21	(52)	75	258
Net interest income after provision for credit losses	831	580	2,165	1,307
Noninterest income:
Gains on investment securities, net	189	190	661	271
Gains on equity warrant assets, net	147	54	491	94
Client investment fees	20	32	55	107
Wealth management and trust fees	22	0	22	0
Foreign exchange fees	65	44	189	128
Credit card fees	34	23	93	72
Deposit service charges	29	22	82	67
Lending related fees	21	13	55	38
Letters of credit and standby letters of credit fees	13	12	39	35
Investment banking revenue	90	92	335	281
Commissions	17	16	58	49
Other	25	49	97	76
Total noninterest income	672	547	2,177	1,218
Noninterest expense:
Compensation and benefits	548	327	1,418	903
Professional services	104	67	282	170
Premises and equipment	54	31	124	85
Net occupancy	25	19	60	56
Business development and travel	6	2	13	19
FDIC and state assessments	13	7	33	19
Merger-related charges	83	0	102	0
Other	46	38	136	118
Total noninterest expense	879	491	2,168	1,370
Income before income tax expense	624	636	2,174	1,155
Income tax expense	149	162	509	300
Net income before noncontrolling interests	475	474	1,665	855
Net income attributable to noncontrolling interests	(88)	(28)	(226)	(40)
Preferred stock dividends	(22)	(4)	(40)	(12)
Net income available to common stockholders	$ 365	$ 442	$ 1,399	$ 803
Earnings per common share—basic (dollars per share)	$ 6.33	$ 8.53	$ 25.54	$ 15.55
Earnings per common share—diluted (dollars per share)	$ 6.24	$ 8.47	$ 25.16	$ 15.46

Interim Consolidated Statemen_2

Interim Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income before noncontrolling interests	$ 475	$ 474	$ 1,665	$ 855
Change in foreign currency cumulative translation gains and losses:
Foreign currency translation (losses) gains	(6)	10	(4)	1
Related tax benefit (expense)	2	(3)	1	0
Change in unrealized gains and losses on available-for-sale securities:
Unrealized holding (losses) gains	(30)	14	(584)	605
Related tax benefit (expense)	8	(4)	163	(168)
Reclassification adjustment for gains included in net income	0	0	0	(61)
Related tax expense	0	0	0	17
Cumulative-effect adjustment for unrealized losses on securities transferred from AFS to HTM	(54)	0	(132)	0
Related tax benefit	15	0	36	0
Amortization of unrealized holding net gains on securities transferred from AFS to HTM	0	0	(5)	(1)
Related tax expense	0	0	1	0
Change in unrealized gains and losses on cash flow hedges:
Unrealized gains	0	0	0	232
Related tax expense	0	0	0	(64)
Reclassification adjustment for gains included in net income	(16)	(16)	(47)	(34)
Related tax expense	4	5	13	9
Other comprehensive (loss) income, net of tax	(77)	6	(558)	536
Comprehensive income	398	480	1,107	1,391
Comprehensive income attributable to noncontrolling interests	(88)	(28)	(226)	(40)
Comprehensive income attributable to SVBFG	$ 310	$ 452	$ 881	$ 1,351

Interim Consolidated Statemen_3

Interim Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Total	Impact of adopting ASC 326	Common Stock	Noncumulative Preferred Stock	Preferred Stock	Preferred StockNoncumulative Preferred Stock	Common Stock	Common StockCommon Stock	Additional Paid-in Capital	Additional Paid-in CapitalCommon Stock	Retained Earnings	Retained EarningsImpact of adopting ASC 326	Accumulated Other Comprehensive Income	Total SVBFG Stockholders’ Equity	Total SVBFG Stockholders’ EquityImpact of adopting ASC 326	Total SVBFG Stockholders’ EquityCommon Stock	Total SVBFG Stockholders’ EquityNoncumulative Preferred Stock	Noncontrolling Interests
Balance (in shares) at Dec. 31, 2019							51,655,607
Balance, beginning of period, net of tax at Dec. 31, 2019	$ 6,621				$ 340		$ 0		$ 1,470		$ 4,576		$ 84	$ 6,470				$ 151
Balance, beginning of period, net of tax (Day one impact for adoption of ASC 326) at Dec. 31, 2019		$ (35)										$ (35)			$ (35)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)							376,588
Common stock issued under employee benefit plans, net of restricted stock cancellations	18						$ 0		18					18
Net income	855										815			815				40
Capital calls and distributions, net	(17)																	(17)
Other comprehensive (loss) income, net of tax	536												536	536
Share-based compensation, net	61								61					61
Common stock repurchases (in shares)							(244,223)
Common stock repurchases	(60)						$ 0				(60)			(60)
Dividends on preferred stock	(12)										(12)			(12)
Balance (in shares) at Sep. 30, 2020							51,787,972
Balance, end of period, net of tax at Sep. 30, 2020	7,967				340		$ 0		1,549		5,284		620	7,793				174
Balance (in shares) at Jun. 30, 2020							51,740,714
Balance, beginning of period, net of tax at Jun. 30, 2020	7,468				340		$ 0		1,523		4,842		614	7,319				149
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)							47,258
Common stock issued under employee benefit plans, net of restricted stock cancellations	4								4					4
Net income	474										446			446				28
Capital calls and distributions, net	(3)																	(3)
Other comprehensive (loss) income, net of tax	6
Share-based compensation, net	22								22					22
Dividends on preferred stock	(4)										(4)			(4)
Balance (in shares) at Sep. 30, 2020							51,787,972
Balance, end of period, net of tax at Sep. 30, 2020	7,967				340		$ 0		1,549		5,284		620	7,793				174
Balance (in shares) at Dec. 31, 2020							51,888,463
Balance, beginning of period, net of tax at Dec. 31, 2020	8,433				340		$ 0		1,585		5,672		623	8,220				213
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)							374,039
Common stock issued under employee benefit plans, net of restricted stock cancellations	(1)						$ 0		(1)					(1)
Issuance of stock			$ 2,363	$ 1,724				$ 0		$ 2,363						$ 2,363	$ 1,724
Issuance of stock (in shares)						1,724,000,000		4,527,000
Net income	1,665										1,439			1,439				226
Capital calls and distributions, net	(70)																	(70)
Other comprehensive (loss) income, net of tax	(558)													(558)
Share-based compensation, net	93								93					93
Dividends on preferred stock	(40)										40			(40)
Balance (in shares) at Sep. 30, 2021							58,677,483
Balance, end of period, net of tax at Sep. 30, 2021	14,669				2,064		$ 0		5,100		7,071		65	14,300				369
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock for the acquisition of Boston Private (in shares)								1,887,981
Issuance of common stock for the acquisition of Boston Private			1,060					$ 0		1,060						1,060
Balance (in shares) at Jun. 30, 2021							54,530,307
Balance, beginning of period, net of tax at Jun. 30, 2021	11,967				2,064		$ 0		2,755		6,706		142	11,667				300
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)							32,195
Common stock issued under employee benefit plans, net of restricted stock cancellations	2								2					2
Issuance of stock			1,245					$ 0		1,245						1,245
Issuance of stock (in shares)								2,227,000
Net income	475										387			387				88
Capital calls and distributions, net	(19)																	(19)
Other comprehensive (loss) income, net of tax	(77)
Share-based compensation, net	38								38					38
Dividends on preferred stock	(22)										(22)			(22)
Balance (in shares) at Sep. 30, 2021							58,677,483
Balance, end of period, net of tax at Sep. 30, 2021	$ 14,669				$ 2,064		$ 0		$ 5,100		$ 7,071		$ 65	$ 14,300				$ 369
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock for the acquisition of Boston Private (in shares)								1,887,981
Issuance of common stock for the acquisition of Boston Private			$ 1,060					$ 0		$ 1,060						$ 1,060

Interim Consolidated Statemen_4

Interim Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income before noncontrolling interests	$ 1,665,000	$ 855,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	75,000	258,000
Changes in fair values of equity warrant assets, net of proceeds from exercises	(36,000)	(4,000)
Changes in fair values of derivatives, net	5,000	(88,000)
Gains on investment securities, net	(661,000)	(271,000)
Distributions of earnings from non-marketable and other equity securities	166,000	65,000
Depreciation and amortization	106,000	74,000
Amortization of premiums and discounts on investment securities, net	294,000	55,000
Amortization of share-based compensation	93,000	61,000
Amortization of deferred loan fees	(193,000)	(123,000)
Deferred income tax expense (benefit)	73,000	(4,000)
Excess tax benefit from exercise of stock options and vesting of restricted shares	(34,000)	(3,000)
Losses from the write-off of premises and equipment and right-of-use assets	38,000	0
Changes in other assets and liabilities:
Accrued interest receivable and payable, net	(117,000)	15,000
Accounts receivable and payable, net	5,000	18,000
Income tax receivable and payable, net	(141,000)	(16,000)
Accrued compensation	89,000	(2,000)
Foreign exchange spot contracts, net	144,000	147,000
Proceeds from termination of interest rate swaps	0	228,000
Other, net	(442,000)	(212,000)
Net cash provided by operating activities	1,129,000	1,053,000
Cash flows from investing activities:
Purchases of AFS securities	(5,395,000)	(16,615,000)
Sales proceeds	168,000	2,654,000
Proceeds from maturities and paydowns of AFS securities	3,892,000	2,634,000
Purchases of HTM securities	(65,048,000)	(1,757,000)
Proceeds from maturities and paydowns of HTM securities	8,993,000	2,833,000
Purchases of non-marketable and other equity securities	(310,000)	(164,000)
Proceeds from sales and distributions of capital of non-marketable and other securities	587,000	85,000
Net increase in loans	(9,006,000)	(5,193,000)
Purchases of premises and equipment	(77,000)	(65,000)
Business acquisitions	1,116,000	0
Net cash used for investing activities	(65,080,000)	(15,588,000)
Cash flows from financing activities:
Net increase in deposits	60,216,000	23,015,000
Net increase in short-term borrowings	34,000	1,000
Proceeds from issuance of long-term debt	990,000	495,000
(Distributions to noncontrolling interests), net of contributions from noncontrolling interests	(70,000)	(16,000)
Net proceeds from the issuance of preferred stock	1,724,000	0
Payment of preferred stock dividend	(40,000)	(12,000)
Common stock repurchases	0	(60,000)
Proceeds from issuance of common stock, ESPP and ESOP, net of restricted stock awards	2,362,000	18,000
Net cash provided by financing activities	65,216,000	23,441,000
Net increase in cash and cash equivalents	1,265,000	8,906,000
Cash and cash equivalents at beginning of period	17,675,000	6,782,000
Cash and cash equivalents at end of period	18,940,000	15,688,000
Cash paid during the period for:
Interest	57,000	67,000
Income taxes	547,000	287,000
Noncash items during the period:
Changes in unrealized gains and losses on AFS securities, net of tax	(421,000)	393,000
Distributions of stock from investments	62,000	12,000
Transfers from AFS securities to HTM	$ 8,953,000	$ 0

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation SVB Financial Group is a diversified financial services company, as well as a bank holding company and a financial holding company. SVB Financial was incorporated in the state of Delaware in March 1999. Through our various subsidiaries and divisions, we offer a diverse set of banking and financial products and services to support our clients of all sizes and stages throughout their life cycles. In these notes to our unaudited interim consolidated financial statements, when we refer to “SVB Financial Group,” “SVBFG," the “Company,” “we,” “our,” “us” or use similar words, we mean SVB Financial Group and all of its subsidiaries collectively, including Silicon Valley Bank (the “Bank”), unless the context requires otherwise. When we refer to “SVB Financial” or the “Parent” we are referring only to the parent company, SVB Financial Group (not including subsidiaries). The accompanying unaudited interim consolidated financial statements reflect all adjustments of a normal and recurring nature that are, in the opinion of management, necessary to fairly present our financial position, results of operations and cash flows in accordance with GAAP. Such unaudited interim consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the SEC. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. The results of operations for the three and nine months ended September 30, 2021 are not necessarily indicative of results to be expected for any future periods. These unaudited interim consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2020 (“2020 Form 10-K”). Use of Estimates and Assumptions The preparation of unaudited interim consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Estimates may change as new information is obtained. Among the more significant estimates are those that relate to: 1) ACL for loans and for unfunded credit commitments, 2) valuation of non-marketable and other equity securities, 3) valuation of equity warrant assets, 4) goodwill, intangible assets and other purchase accounting related adjustments, and 5) income taxes. Principles of Consolidation and Presentation Our unaudited interim consolidated financial statements include the accounts of SVB Financial Group and consolidated entities. All significant intercompany accounts and transactions with consolidated entities have been eliminated. For a further description of our accounting policies regarding consolidation refer to Consolidated Financial Statements and Supplementary Data — Note 2 — “Summary of Significant Accounting Policies” under Part II, Item 8 of our 2020 Form 10-K. Reclassifications Certain prior period amounts have been reclassified to conform to current period presentation. Changes include the presentation of our loan disclosures as a result of the acquisition of Boston Private as mentioned below, our table summarizing the activity relating to our ACL for loans and the consolidation of certain line items in our Consolidated Statement of Stockholders' Equity (unaudited). Summary of Significant Accounting Policies With the exception of the updated accounting policy listed below, the accompanying unaudited interim consolidated financial statements have been prepared on a consistent basis with the accounting policies described in Consolidated Financial Statements and Supplementary Data — Note 2 — “Summary of Significant Accounting Policies” under Part II, Item 8 of our 2020 Form 10-K. Allowance for Credit Losses: Loan Portfolio Segments and Classes of Financing Receivables Upon completing the acquisition of Boston Private, we evaluated the impact of the acquired loan portfolio on our existing portfolio segments and classes of financing receivables, which we historically have called "risk-based segments." We have modified both levels of disaggregation to accommodate Boston Private loans. The following provides additional information regarding our revised eight portfolio segments and the additional disaggregation of our eleven classes of financing receivables: • Global Fund Banking (segment and class) – The vast majority of our Global Fund Banking ("GFB") portfolio segment consists of capital call lines of credit, the repayment of which is dependent on the payment of capital calls by the underlying limited partner investors in funds managed by certain private equity and venture capital firms. • Investor Dependent (segment) – Our Investor Dependent loans are made primarily to technology and life science/healthcare companies. These borrowers typically have modest or negative cash flows and rarely have an established record of profitable operations. Repayment of these loans may be dependent upon receipt by borrowers of additional equity financing from venture capital firms or other investors, or in some cases, a successful sale to a third party or an IPO. This portfolio segment is further disaggregated into two classes of financing receivables: ◦ Early-Stage (class) – Our Early-Stage class of financing receivable consists of pre-revenue, development-stage companies and companies that are in the early phases of commercialization, with revenues of up to $5 million. ◦ Growth Stage (class) – Our Growth Stage (Mid/Later Stages) class of financing receivable consists of growth-stage enterprises. We consider companies with revenues between $5 million and $15 million, or pre-revenue clinical-stage biotechnology companies, to be Mid-Stage, and companies with revenues in excess of $15 million to be Later Stage. • Cash Flow Dependent and Innovation Commercial and Industrial ("C&I") (segment) – These loans are made primarily to technology and life science/healthcare companies that are not Investor Dependent, i.e. repayment is not dependent on additional equity financing, a successful sale or an IPO. This portfolio segment consists of two classes of financing receivables: ◦ Cash Flow Dependent – Sponsor-Led Buyout ("SLBO") (class) – Sponsor-Led Buyout loans are typically used to assist a select group of private equity sponsors with the acquisition of businesses, are larger in size, and repayment is generally dependent upon the cash flows of the combined entities. Acquired companies are typically established, later-stage businesses of scale and characterized by reasonable levels of leverage with loan structures that include meaningful financial covenants. The sponsor’s equity contribution is often 50 percent or more of the acquisition price. ◦ Innovation C&I (class) – This class of financing receivable contains other commercial and industrial loans in innovation sectors (i.e. the technology and life science/healthcare industries). These loans are dependent on either the borrower’s cash flows or balance sheet for repayment. Cash flow dependent loans require the borrower to maintain cash flow from operations that is sufficient to service all debt. Borrowers must demonstrate normalized cash flow in excess of all fixed charges associated with operating the business. Balance sheet dependent loans include asset-based loans and are structured to require constant current asset coverage (i.e. cash, cash equivalents, accounts receivable, and, to a much lesser extent, inventory) in an amount that exceeds the outstanding debt. The repayment of these arrangements is dependent on the financial condition, and payment ability, of third parties with whom our clients do business. • Private Bank (segment and class) – Our Private Bank clients are primarily private equity/venture capital professionals and executives in the innovation companies they support as well as high net worth clients acquired from Boston Private. We offer a customized suite of private banking services, including mortgages, home equity lines of credit, restricted and private stock loans, personal capital call lines of credit, lines of credit against liquid assets and other secured and unsecured lending products. In addition, we provide owner occupied commercial mortgages to Private Bank clients and real estate secured loans to eligible employees through our Employee Home Ownership Program. • Commercial Real Estate (CRE) (segment and class) – Commercial real estate loans are generally acquisition financing for commercial properties such as office buildings, retail properties, apartment buildings, and industrial/warehouse space. • Other C&I (segment and class) – These are commercial and industrial loans, including working capital and revolving lines of credit, as well as term loans for equipment and fixed assets. These loans are primarily to clients that are not in the technology and life sciences/healthcare industries. Additionally, this portfolio segment contains commercial tax-exempt loans to not-for-profit private schools, colleges, public charter schools and other not-for-profit organizations. • Premium Wine and Other (segment) – This portfolio segment consists of two classes of financing receivables: ◦ Premium Wine (class) – Our Premium Wine clients primarily consist of wine producers, vineyards and wine industry or hospitality businesses across the Western United States. A large portion of these loans are secured by real estate collateral such as vineyards and wineries. ◦ Other (class) – Our Other class of financing receivable primarily consists of construction and land loans for financing new developments as well as financing for improvements to existing buildings. These also include our community development loans made as part of our responsibilities under the Community Reinvestment Act. • Paycheck Protection Program ("PPP") (segment and class) – These are the combined loans issued through the PPP by SVB and Boston Private. These loans represent clients across all portfolio segments and are guaranteed by the U.S Small Business Administration. Refer to Note 2 — “Business Combination” for additional information regarding the Boston Private acquisition. Adoption of New Accounting Standards In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (ASU 2019-12), which is part of the FASB’s initiative to reduce cost and complexity related to accounting for income taxes. ASU 2019-12 eliminates certain exceptions to the general principles of ASC 740, Income Taxes, and simplifies income tax accounting in several areas. We adopted the guidance on January 1, 2021, on a modified retrospective basis. The adoption did not have a material impact on our financial position, results of operations, cash flows or disclosures.

Business Combinations and Asset

Business Combinations and Asset Acquisitions	9 Months Ended
	Sep. 30, 2021
Business Combination and Asset Acquisition [Abstract]
Business Combination	Business Combination On July 1, 2021, we acquired 100 percent of the voting equity interests of Boston Private Financial Holdings, Inc., the parent company of Boston Private Bank & Trust Company. The acquisition of Boston Private accelerates SVB’s private bank and wealth management offering, strengthening SVB’s overall platform and ability to fully meet the financial needs of its clients. The acquisition was accounted for as a business combination and accordingly, the results of Boston Private's operations have been included in the Company's consolidated financial statements for the three and nine months ended September 30, 2021 from the date of acquisition. We acquired Boston Private for $1.2 billion comprised of $2.10 in cash and 0.0228 shares of SVB common stock for each Boston Private share. For the transaction, we issued approximately 1.9 million shares of SVB common stock and registered an additional 99,000 shares of SVB common stock issuable upon the exercise, vesting or settlement of converted legacy Boston Private equity awards. The following table summarizes the allocation of the purchase price to the net assets of Boston Private as of July 1, 2021: (Dollars in millions) July 1, 2021 Cash paid $ 174 Share-based consideration 1,050 Replacement equity awards 10 Total purchase consideration $ 1,234 Fair value of net assets acquired 1,033 Goodwill $ 201 The following table summarizes the estimated fair value of assets acquired and liabilities assumed upon the finalization of the purchase: (Dollars in millions) July 1, 2021 Assets acquired: Cash and cash equivalents $ 1,290 Investment securities 1,429 Net loans 7,217 Premises and equipment 39 Intangible assets 104 Right-of-use assets 107 Other assets 284 Total assets acquired $ 10,470 Liabilities assumed: Deposits $ 8,983 Borrowings 132 Lease liabilities 103 Other liabilities 219 Total liabilities assumed $ 9,437 Fair value of net assets acquired $ 1,033 The Company recognized identifiable intangible assets of $104 million and goodwill of $201 million as a result of the acquisition. Intangible assets of $104 million are subject to amortization over their estimated useful lives. The goodwill recorded includes expected revenue-generating synergies driven by the broadening of our product suite and strength of the combined platform, providing our teams with expanded capabilities, technology and scalability to meet the increasing needs of our Private Bank clients. Goodwill amounts have been allocated to the SVB Private Bank reporting segment and will not be deductible for tax purposes. The following table summarizes the fair value and estimated useful lives of the other intangible assets at the date of acquisition: (Dollars in millions) Estimated Fair Value Weighted Average Estimated Useful Life - in Years Other intangible assets: Customer relationships $ 85 20 Other 19 6 Total other intangible assets $ 104 Of the $7.2 billion net loans acquired, $1.4 billion exhibited credit deterioration on the date of purchase. The following table provides a summary of these PCD loans at acquisition: (Dollars in millions) July 1, 2021 Par value of PCD loans $ 1,368 PCD ACL at acquisition (22) Non-credit premium on PCD loans 43 Purchase price of PCD loans $ 1,389 Due to the various conversions of Boston Private systems during the third quarter of 2021, as well as other streamlining and continuing integration of Boston Private's operating activities into those of the Company, reporting for revenue and net income of the former Boston Private operations for the period subsequent to the acquisition is impracticable. 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. Acquisition-related expenses Direct expenses related to the acquisition of Boston Private were expensed as incurred and were $9 million and $22 million for three and nine months ended September 30, 2021. All expenses were included in merger-related charges, a component of noninterest expense, with the exception of $6 million attributable to the three months ended March 31, 2021, which were recorded in professional services.

Stockholders' Equity and EPS

Stockholders' Equity and EPS	9 Months Ended
	Sep. 30, 2021
Equity and Earnings Per Share [Abstract]
Stockholders' Equity and EPS	Stockholders' Equity and EPS AOCI The following table summarizes the items reclassified out of AOCI into the Consolidated Statements of Income (unaudited) for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (Dollars in millions) Income Statement Location 2021 2020 2021 2020 Reclassification adjustment for gains on AFS securities included in net income Gains on investment securities, net $ — $ — $ — $ (61) Related tax expense Income tax expense — — — 17 Reclassification adjustment for gains on cash flow hedges included in net income Net interest income (16) (16) (47) (34) Related tax expense Income tax expense 4 5 13 9 Total reclassification adjustment for gains included in net income, net of tax $ (12) $ (11) $ (34) $ (69) The table below summarizes the activity relating to net gains and losses on our cash flow hedges included in AOCI for the three and nine months ended September 30, 2021 and 2020. Refer to Note 9 — “Derivative Financial Instruments” for additional information regarding the termination of our cash flow hedges during the quarter ended March 31, 2020. Over the next 12 months, we expect that approximately $59 million in AOCI at September 30, 2021, related to unrealized gains will be reclassified out of AOCI and recognized in net income. Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Balance, beginning of period, net of tax $ 107 $ 153 $ 129 $ (2) Net increase in fair value, net of tax — — — 168 Net realized gain reclassified to net income, net of tax (12) (12) (34) (25) Balance, end of period, net of tax $ 95 $ 141 $ 95 $ 141 EPS Basic EPS is the amount of earnings available to each share of common stock outstanding during the reporting period. Diluted EPS is the amount of earnings available to each share of common stock outstanding during the reporting period adjusted to include the effect of potentially dilutive common shares. Potentially dilutive common shares include incremental shares issuable for stock options and restricted stock unit awards outstanding under our 2006 Equity Incentive Plan and our ESPP. Potentially dilutive common shares are excluded from the computation of dilutive EPS in periods in which the effect would be antidilutive. The following is a reconciliation of basic EPS to diluted EPS for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (Dollars in millions except per share amounts, shares in thousands) 2021 2020 2021 2020 Numerator: Net income available to common stockholders $ 365 $ 442 $ 1,399 $ 803 Denominator: Weighted average common shares outstanding—basic 57,723 51,773 54,772 51,640 Weighted average effect of dilutive securities: Stock options and ESPP 268 141 278 147 Restricted stock units and awards 530 232 567 163 Weighted average common shares outstanding—diluted 58,521 52,146 55,617 51,950 Earnings per common share: Basic $ 6.33 $ 8.53 $ 25.54 $ 15.55 Diluted 6.24 8.47 25.16 15.46 The following table summarizes the weighted-average common shares excluded from the diluted EPS calculation due to the antidilutive effect for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (Shares in thousands) 2021 2020 2021 2020 Stock options 56 319 31 269 Restricted stock units — 55 — 83 Total 56 374 31 352 Common Stock On March 22, 2021, to support the continued growth of our balance sheet, we issued and sold 2,000,000 shares of common stock at a price of $500.00 per share. We received net proceeds of $972 million after deducting underwriting discounts and commissions. On April 14, 2021, the Company issued and sold 300,000 additional shares of common stock under the full exercise of the underwriters' over-allotment option from our March 22, 2021 underwritten public offering. We received additional net proceeds of $146 million after deducting underwriting discounts and commissions. On July 1, 2021, the Company issued 1,887,981 shares of common stock for the acquisition of Boston Private at an exchange ratio of 0.0228 SIVB shares per Boston Private share. On August 12, 2021, the Company issued and sold 2,227,000 shares of common stock at a price of $564.00 per share. We received net proceeds of $1.2 billion after deducting underwriting discounts and commissions. Preferred Stock On December 9, 2019, the Company issued 5.25% Non-Cumulative Perpetual Series A Preferred Stock (''Series A Preferred Stock''). The public offering consists of 14,000,000 depositary shares, each representing a 1/40th ownership interest in a shares of the Series A preferred stock with $0.001 par value and liquidation preference of $1,000 per share, or $25 per depositary share. The Series A Preferred Stock is redeemable at the Company’s option, subject to all applicable regulatory approvals, on or after February 15, 2025. On February 2, 2021, the Company issued 4.10% Non-Cumulative Perpetual Series B Preferred Stock (''Series B Preferred Stock''). The public offering consists of 750,000 depositary shares, each representing a 1/100th ownership interest in shares of Series B Preferred Stock with $0.001 par value and liquidation preferences of $100,000 per share, or $1,000 per depositary share. Dividends, if approved and declared by the Board of Directors, are payable quarterly, in arrears, at a rate per annum equal to (i) 4.10 percent from the original issue date to, but excluding, February 15, 2031 and (ii) for the February 15, 2031 dividend date and during each subsequent ten-year period, the ten-year treasury rate (calculated three On May 13, 2021, the Company issued 4.00% Non-Cumulative Perpetual Series C Preferred Stock (''Series C Preferred Stock''). The public offering consists of 1,000,000 depositary shares, each representing a 1/100th ownership interest in shares of Series C Preferred Stock with $0.001 par value and liquidation preferences of $100,000 per share, or $1,000 per depositary share. Dividends, if approved and declared by the Board of Directors, are payable quarterly, in arrears, at a rate per annum equal to (i) 4.000 percent from the original issue date to, but excluding, May 15, 2026, and (ii) for the May 15, 2026 dividend date and during each subsequent five-year period, the five-year treasury rate (calculated three The following table summarizes our preferred stock at September 30, 2021: Series Description Amount outstanding (in millions) Carrying value Shares issued and outstanding Par Value Ownership interest per depositary share Liquidation preference per depositary share 2021 dividends paid per depositary share Series A 5.250% Fixed-Rate Non-Cumulative Perpetual Preferred Stock $ 350 $ 340 350,000 $ 0.001 1/40 th $ 25 $ 0.98 Series B 4.100% Fixed-Rate Non-Cumulative Perpetual Preferred Stock 750 739 7,500 0.001 1/100 th 1,000 21.98 Series C 4.000% Fixed-Rate Non-Cumulative Perpetual Preferred Stock 1,000 985 10,000 0.001 1/100 th 1,000 10.22 Consolidated Statement of Changes in Equity The following table summarizes the changes in our consolidated equity for the three months ended September 30, 2021 and 2020: Preferred Common Stock Additional Retained Accumulated Total SVBFG Noncontrolling Interests Total (Dollars in millions, except share data) Shares Amount Balance at June 30, 2020 $ 340 51,740,714 $ — $ 1,523 $ 4,842 $ 614 $ 7,319 $ 149 $ 7,468 Common stock issued under employee benefit plans and ESOP, net of restricted stock cancellations — 47,258 — 4 — — 4 — 4 Net income — — — — 446 — 446 28 474 Capital calls and distributions, net — — — — — — — (3) (3) Other comprehensive income, net of tax — — — — — 6 6 — 6 Share-based compensation, net — — — 22 — — 22 — 22 Dividends on preferred stock — — — — (4) — (4) — (4) Balance at September 30, 2020 $ 340 51,787,972 $ — $ 1,549 $ 5,284 $ 620 $ 7,793 $ 174 $ 7,967 Balance at June 30, 2021 $ 2,064 54,530,307 $ — $ 2,755 $ 6,706 $ 142 $ 11,667 $ 300 $ 11,967 Common stock issued under employee benefit plans and ESOP, net of restricted stock cancellations — 32,195 — 2 — — 2 — 2 Issuance of Common Stock — 2,227,000 — 1,245 — — 1,245 — 1,245 Issuance of common stock for the acquisition of Boston Private — 1,887,981 — 1,060 — — 1,060 — 1,060 Net income — — — — 387 — 387 88 475 Capital calls and distributions, net — — — — — — — (19) (19) Other comprehensive income, net of tax — — — — — (77) (77) — (77) Share-based compensation, net — — — 38 — — 38 — 38 Dividends on preferred stock — — — — (22) — (22) — (22) Balance at September 30, 2021 $ 2,064 58,677,483 $ — $ 5,100 $ 7,071 $ 65 $ 14,300 $ 369 $ 14,669

Variable Interest Entities

Variable Interest Entities	9 Months Ended
	Sep. 30, 2021
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, qualified affordable housing projects, and subordinated debt instruments. The following table presents the carrying amounts and classification of variable interests in consolidated and unconsolidated VIEs as of September 30, 2021 and December 31, 2020: (Dollars in millions) Consolidated VIEs Unconsolidated VIEs Maximum Exposure to Loss in Unconsolidated VIEs September 30, 2021: Assets: Cash and cash equivalents $ 8 $ — $ — Non-marketable and other equity securities (1) 762 1,216 1,216 Accrued interest receivable and other assets (2) 24 6 — Total assets $ 794 $ 1,222 $ 1,216 Liabilities: Other liabilities (1) 17 471 — Long term debt (2) — 90 — Total liabilities $ 17 $ 561 $ — December 31, 2020: Assets: Cash and cash equivalents $ 15 $ — $ — Non-marketable and other equity securities (1) 422 859 859 Accrued interest receivable and other assets 1 — — Total assets $ 438 $ 859 $ 859 Liabilities: Other liabilities (1) 1 370 — Total liabilities $ 1 $ 370 $ — (1) Included in our unconsolidated non-marketable and other equity securities portfolio at September 30, 2021 and December 31, 2020 are investments in qualified affordable housing projects of $920 million and $616 million, respectively, and related other liabilities consisting of unfunded commitments of $471 million and $370 million, respectively. (2) Included in our unconsolidated accrued interest receivable and other assets at September 30, 2021 are investments in statutory trusts for junior subordinated debt of $6 million and $90 million included in long term debt previously issued by Boston Private and assumed in the acquisition. 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 and qualified affordable housing projects. Many of these are investments held by SVB Financial in third-party funds in which we do not have controlling or significant variable interests. These investments represent our unconsolidated VIEs in the table above. Our non-marketable and other equity securities portfolio also includes investments from SVB Capital. SVB Capital is the funds management business of SVB Financial Group, which focuses primarily on venture capital investments. The SVB Capital family of funds is comprised of direct venture funds that invest in companies and funds of funds that invest in other venture capital funds. We have a controlling and significant variable interest in three of these SVB Capital funds and consolidate these funds for financial reporting purposes. All investments are generally nonredeemable, and distributions are expected to be received through the liquidation of the underlying investments throughout the life of the investment fund. Investments may only be sold or transferred subject to the notice and approval provisions of the underlying investment agreement. Subject to applicable regulatory requirements, including the Volcker Rule, we also make commitments to invest in venture capital and private equity funds. For additional details, see Note 12 — “Off-Balance Sheet Arrangements, Guarantees and Other Commitments.” The Bank also has variable interests in low income housing tax credit funds, in connection with fulfilling its responsibilities under the CRA, that are designed to generate a return primarily through the realization of federal tax credits. These investments are typically limited partnerships in which the general partner, other than the Bank, holds the power over significant activities of the VIE; therefore, these investments are not consolidated. For additional information on our investments in qualified affordable housing projects, see Note 6 — “Investment Securities." As of September 30, 2021, our exposure to loss with respect to the consolidated VIEs is limited to our net assets of $777 million and our exposure to loss for our unconsolidated VIEs is equal to our investment in these assets of $1.2 billion. Junior subordinated debentures SVB Financial Group assumed two statutory trusts during the merger with Boston Private. These trusts were for the purpose of issuing trust preferred securities and investing the proceeds in junior subordinated debentures. These statutory trusts created by legacy Boston Private are not consolidated within the financial statements as the Company is not the primary beneficiary of the trusts; however, the total junior subordinated debentures payable to the preferred stockholders of statutory trusts are reported as long-term debt in the financial statements. As of September 30, 2021, there are $90 million of trust preferred securities outstanding.

Cash and Cash Equivalents

Cash and Cash Equivalents	9 Months Ended
	Sep. 30, 2021
Cash and Cash Equivalents [Abstract]
Cash and Cash Equivalents	Cash and Cash Equivalents The following table details our cash and cash equivalents at September 30, 2021 and December 31, 2020: (Dollars in millions) September 30, 2021 December 31, 2020 Cash and due from banks $ 1,185 $ 723 Interest bearing deposits with the Federal Reserve Bank 12,406 13,700 Interest bearing deposits with other institutions 5,106 3,025 Securities purchased under agreements to resell (1) 216 227 Other short-term investment securities 27 — Total cash and cash equivalents $ 18,940 $ 17,675 (1) At September 30, 2021 and December 31, 2020, securities purchased und er agreements to resell were collateralized by U.S. Treasury securities and U.S. agency securities with aggregate fair value s of $221 million a n d $232 million, respectively. None of these securities were sold or repledged as of September 30, 2021 and December 31, 2020.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities Our investment securities portfolio consists of: (i) an AFS securities portfolio and a HTM securities portfolio, both of which represent interest-earning investment securities, and (ii) a non-marketable and other equity securities portfolio, which primarily represents investments managed as part of our funds management business, investments in qualified affordable housing projects, as well as public equity securities held as a result of equity warrant assets exercised. AFS Securities The major components of our AFS investment securities portfolio at September 30, 2021 and December 31, 2020 are as follows: September 30, 2021 (Dollars in millions) Amortized Unrealized Unrealized Carrying AFS securities, at fair value: U.S. Treasury securities $ 9,122 $ 170 $ (15) $ 9,277 U.S. agency debentures 212 — (4) 208 Foreign government debt securities 15 — — 15 Residential MBS: Agency-issued MBS 10,902 69 (187) 10,784 Agency-issued CMO—fixed rate 1,129 11 (2) 1,138 Agency-issued CMBS 1,539 36 (13) 1,562 Total AFS securities $ 22,919 $ 286 $ (221) $ 22,984 December 31, 2020 (Dollars in millions) Amortized Unrealized Unrealized Carrying AFS securities, at fair value: U.S. Treasury securities $ 4,198 $ 272 $ — $ 4,470 U.S. agency debentures 234 4 (1) 237 Foreign government debt securities 24 — — 24 Residential MBS: Agency-issued MBS 13,271 233 (1) 13,503 Agency-issued CMO—fixed rate 8,077 40 (10) 8,107 Agency-issued CMBS 4,441 134 (3) 4,572 Total AFS securities $ 30,245 $ 683 $ (15) $ 30,913 The following table summarizes sale activity of AFS securities during the three and nine months ended September 30, 2021 and 2020 as recorded in the line item “Gains on investment securities, net," a component of noninterest income: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Sales proceeds $ 168 $ — $ 168 $ 2,654 Net realized gains and losses: Gross realized gains — — — 61 Gross realized losses — — — — Net realized gains $ — $ — $ — $ 61 For the three and nine months ended September 30, 2021 gross realized gains and gross realized losses were below $1 million. For the three months ended September 30, 2020 we did not have any sales proceeds, gross realized gains, or gross realized losses from our AFS securities portfolio. The following tables summarize our AFS securities in an unrealized loss position for which an ACL has not been recorded and summarized into categories of less than 12 months, or 12 months or longer, as of September 30, 2021 and December 31, 2020: September 30, 2021 Less than 12 months 12 months or longer (1) Total (Dollars in millions) Fair Value of Unrealized Fair Value of Unrealized Fair Value of Unrealized AFS securities: U.S. Treasury securities $ 5,172 $ (15) $ — $ — $ 5,172 $ (15) U.S. agency debentures 112 (4) — — 112 (4) Residential MBS: Agency-issued MBS 8,376 (187) — — 8,376 (187) Agency-issued CMO —fixed rate 232 (2) — — 232 (2) Agency-issued CMBS 695 (9) 81 (4) 776 (13) Total AFS securities (1) $ 14,587 $ (217) $ 81 $ (4) $ 14,668 $ (221) (1) As of September 30, 2021, we identified a total of 381 investments that were in unrealized loss positions with 2 investments in an unrealized loss position for a period of time greater than 12 months. Based on our analysis of the securities in an unrealized loss position as of September 30, 2021, the decline in value is unrelated to credit loss and is related to changes in market interest rates since purchase and therefore changes in value for securities are included in other comprehensive income. Market valuations and credit loss analyses on assets in the AFS securities portfolio are reviewed and monitored on a quarterly basis. As of September 30, 2021, we do not intend to sell any of our securities in an unrealized loss position prior to recovery of our amortized cost basis, and it is more likely than not that we will not be required to sell any of our securities prior to recovery of our amortized cost basis. None of the investments in our AFS securities portfolio were past due as of September 30, 2021. December 31, 2020 Less than 12 months 12 months or longer Total (Dollars in millions) Fair Value of Unrealized Fair Value of Unrealized Fair Value of Unrealized AFS securities: U.S. Treasury securities (1) $ 60 $ — $ — $ — $ 60 $ — U.S. agency debentures 133 (1) — — 133 (1) Residential MBS: Agency-issued MBS 904 (1) — — 904 (1) Agency-issued CMO—fixed rate 2,199 (10) — — 2,199 (10) Agency-issued CMBS 989 (3) — — 989 (3) Total AFS securities (2) $ 4,285 $ (15) $ — $ — $ 4,285 $ (15) (1) At December 31, 2020, gross unrealized losses totaled less than $1 million for U.S. Treasury AFS securities with a loss duration of less than 12 months. (2) As of December 31, 2020, we identified a total of 93 investments that were in unrealized loss positions, of which no investments are in an unrealized loss position for a period of time greater than 12 months. None of the investments in our AFS securities portfolio were past due as of December 31, 2020. The following table summarizes the fixed income securities, carried at fair value, classified as AFS as of September 30, 2021 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 MBS may differ significantly from their contractual maturities because mortgage borrowers have the right to prepay outstanding loan obligations with or without penalties. MBS 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. September 30, 2021 (Dollars in millions) Total One Year After One After Five After U.S. Treasury securities $ 9,277 $ 40 $ 9,237 $ — $ — U.S. agency debentures 208 91 37 80 — Foreign government debt securities 15 15 — — — Residential MBS: Agency-issued MBS 10,784 — — — 10,784 Agency-issued CMO—fixed rate 1,138 — — — 1,138 Agency-issued CMBS 1,562 — 16 1,546 — Total $ 22,984 $ 146 $ 9,290 $ 1,626 $ 11,922 HTM Securities During the nine months ended September 30, 2021, we re-designated certain securities from the classification of AFS to HTM. The securities re-designated consisted of agency-issued CMO's, CMBS', MBS' and U.S. agency debentures with a total carrying value of $8.8 billion. At the time of re-designation the securities included $132 million of pretax net unrealized losses in other comprehensive income and are being amortized over the life of the securities in a manner consistent with the amortization of a premium or discount. Our decision to re-designate the securities was based on our ability and intent to hold these securities to maturity. Factors used in assessing the ability to hold these securities to maturity were future liquidity needs and sources of funding. HTM securities are carried on the balance sheet at amortized cost and the changes in the value of these securities, other than an ACL, are not reported on the financial statements. The components of our HTM investment securities portfolio at September 30, 2021 and December 31, 2020 are as follows: September 30, 2021 (Dollars in millions) Amortized Unrealized Unrealized Fair Value ACL HTM securities, at cost: U.S. agency debentures (1) $ 609 $ 14 $ (1) $ 622 $ — Residential MBS: Agency-issued MBS 52,874 167 (515) 52,526 — Agency-issued CMO—fixed rate 7,410 19 (71) 7,358 — Agency-issued CMO—variable rate 109 1 — 110 — Agency-issued CMBS 14,351 58 (120) 14,289 — Municipal bonds and notes 6,485 151 (78) 6,558 1 Corporate bonds 533 2 (3) 532 5 Total HTM securities $ 82,371 $ 412 $ (788) $ 81,995 $ 6 (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, 2020 (Dollars in millions) Amortized Unrealized Unrealized Fair Value ACL HTM securities, at amortized cost: U.S. agency debentures (1) $ 402 $ 19 $ — $ 421 $ — Residential MBS: Agency-issued MBS 7,740 240 (2) 7,978 — Agency-issued CMO—fixed rate 1,735 23 — 1,758 — Agency-issued CMO—variable rate 137 1 — 138 — Agency-issued CMBS 2,943 124 — 3,067 — Municipal bonds and notes 3,635 221 (1) 3,855 — Total HTM securities $ 16,592 $ 628 $ (3) $ 17,217 $ — (1) Consists of pools of Small Business Investment Company debentures issued and guaranteed by the U.S. Small Business Administration, an independent agency of the United States. Allowance for Credit Losses for HTM Securities For HTM securities, the three months ended September 30, 2021 had a beginning ACL balance of $5 million, a provision for credit losses of $1 million, and an ending ACL balance of $6 million. For HTM securities, the nine months ended September 30, 2021 had a beginning ACL balance of less than $1 million, a provision for credit losses of $6 million and an ending ACL balance of $6 million. For the three and nine months ended September 30, 2020, the beginning ACL balance, the day one impact of adopting ASC 326, the provision for credit losses and the ending balance of ACL for HTM securities, in each case, were all less than $1 million . AIR from HTM securities totaled $179 million at September 30, 2021 and $55 million at December 31, 2020 and is reported in "Accrued interest receivable and other assets" in our unaudited interim consolidated balance sheets. Credit Quality Indicators On a quarterly basis, management monitors the credit quality for HTM securities through the use of standard credit ratings. The following table summarizes our amortized cost of HTM securities aggregated by credit quality indicator at September 30, 2021 and December 31, 2020: (Dollars in millions) September 30, 2021 December 31, 2020 Municipal bonds and notes: Aaa $ 3,422 $ 2,070 Aa1 1,883 1,145 Aa2 981 420 Aa3 172 — A1 27 — Total municipal bonds and notes $ 6,485 $ 3,635 Corporate bonds: Aa1 $ 29 $ — Aa2 27 — Aa3 43 — A1 210 — A2 224 — Total corporate bonds $ 533 $ — The following table summarizes the remaining contractual principal maturities on fixed income investment securities classified as HTM as of September 30, 2021. For U.S. agency debentures, the expected maturity is the actual contractual maturity of the notes. Expected remaining maturities for certain U.S. agency debentures may occur earlier than their contractual maturities because the note issuers have the right to call outstanding amounts ahead of their contractual maturity. Expected maturities for MBS may differ significantly from their contractual maturities because mortgage borrowers have the right to prepay outstanding loan obligations with or without penalties. MBS 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; however, we expect to collect substantially all of the recorded investment on these securities. September 30, 2021 Total One Year After One Year to After Five Years to After (Dollars in millions) Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value U.S. agency debentures $ 609 $ 622 $ 1 $ 1 $ 133 $ 137 $ 475 $ 484 $ — $ — Residential MBS: Agency-issued MBS 52,874 52,526 1 2 7 8 407 419 52,459 52,097 Agency-issued CMO—fixed rate 7,410 7,358 — — 7 7 361 368 7,042 6,983 Agency-issued CMO—variable rate 109 110 — — — — — — 109 110 Agency-issued CMBS 14,351 14,289 — — 213 212 534 550 13,604 13,527 Municipal bonds and notes 6,485 6,558 52 52 157 162 973 1,015 5,303 5,329 Corporate bonds 533 532 — — — — 533 532 — — Total $ 82,371 $ 81,995 $ 54 $ 55 $ 517 $ 526 $ 3,283 $ 3,368 $ 78,517 $ 78,046 Non-marketable and Other Equity Securities The major components of our non-marketable and other equity securities portfolio at September 30, 2021 and December 31, 2020 are as follows: (Dollars in millions) September 30, 2021 December 31, 2020 Non-marketable and other equity securities: Non-marketable securities (fair value accounting): Consolidated venture capital and private equity fund investments (1) $ 140 $ 89 Unconsolidated venture capital and private equity fund investments (2) 222 185 Other investments without a readily determinable fair value (3) 95 61 Other equity securities in public companies (fair value accounting) (4) 158 281 Non-marketable securities (equity method accounting) (5): Venture capital and private equity fund investments 656 362 Debt funds 5 5 Other investments 289 203 Investments in qualified affordable housing projects, net (6) 920 616 Total non-marketable and other equity securities $ 2,485 $ 1,802 (1) The following table shows the amounts of venture capital and private equity fund investments held by the following consolidated funds and our ownership percentage of each fund at September 30, 2021 and December 31, 2020 (fair value accounting): September 30, 2021 December 31, 2020 (Dollars in millions) Amount Ownership % Amount Ownership % Strategic Investors Fund, LP $ 5 12.6 % $ 5 12.6 % Capital Preferred Return Fund, LP 64 20.0 50 20.0 Growth Partners, LP 71 33.0 34 33.0 Total consolidated venture capital and private equity fund investments $ 140 $ 89 (2) The carrying value represents investments in 153 and 162 funds (primarily venture capital funds) at September 30, 2021 and December 31, 2020, respectively, where our ownership interest is typically less than 5% of the voting interests of each such fund and in which we do not have the ability to exercise significant influence over the partnerships operating activities and financial policies. We carry our unconsolidated venture capital and private equity fund investments at fair value based on the fund investments' net asset values per share as obtained from the general partners of the investments. For each fund investment, we adjust the net asset value per share for differences between our measurement date and the date of the fund investment’s net asset value by using the most recently available financial information from the investee general partner, for example June 30 th for our September 30 th consolidated financial statements, adjusted for any contributions paid, distributions received from the investment, and significant fund transactions or market events during the reporting period. (3) These investments include direct equity investments in private companies. The carrying value is based on the price at which the investment was acquired plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments. We consider a range of factors when adjusting the fair value of these investments, including, but not limited to, the term and nature of the investment, local market conditions, values for comparable securities, current and projected operating performance, exit strategies, financing transactions subsequent to the acquisition of the investment and a discount for certain investments that have lock-up restrictions or other features that indicate a discount to fair value is warranted. The following table shows the changes to the carrying amount of other investments without a readily determinable fair value for the nine months ended September 30, 2021: (Dollars in millions) Nine months ended September 30, 2021 Cumulative Adjustments Measurement alternative: Carrying value at September 30, 2021 $ 95 Carrying value adjustments: Impairment $ — $ (1) Upward changes for observable prices 10 13 Downward changes for observable prices (3) (6) (4) Investments classified as other equity securities (fair value accounting) represent shares held in public companies as a result of exercising public equity warrant assets and direct equity investments in public companies held by our consolidated funds. Changes in equity securities measured at fair value are recognized through net income. (5) The following table shows the carrying value and our ownership percentage of each investment at September 30, 2021 and December 31, 2020 (equity method accounting): September 30, 2021 December 31, 2020 (Dollars in millions) Amount Ownership % Amount Ownership % Venture capital and private equity fund investments: Strategic Investors Fund II, LP $ 3 8.6 % $ 4 8.6 % Strategic Investors Fund III, LP 29 5.9 16 5.9 Strategic Investors Fund IV, LP 38 5.0 25 5.0 Strategic Investors Fund V funds 92 Various 67 Various CP II, LP (i) 1 5.1 8 5.1 Other venture capital and private equity fund investments 493 Various 242 Various Total venture capital and private equity fund investments $ 656 $ 362 Debt funds: Gold Hill Capital 2008, LP (ii) $ 4 15.5 % $ 4 15.5 % Other debt funds 1 Various 1 Various Total debt funds $ 5 $ 5 Other investments: SPD Silicon Valley Bank Co., Ltd. $ 152 50.0 % $ 115 50.0 % Other investments 137 Various 88 Various Total other investments $ 289 $ 203 (i) Our ownership includes direct ownership interest of 1.3 percent and indirect ownership interest of 3.8 percent through our investments in Strategic Investors Fund II, LP. (ii) Our ownership includes direct ownership interest of 11.5 percent in the fund and an indirect interest in the fund through our investment in Gold Hill Capital 2008, LLC of 4.0 percent. (6) The following table presents the balances of our investments in qualified affordable housing projects and related unfunded commitments included as a component of “Other liabilities” on our consolidated balance sheets at September 30, 2021 and December 31, 2020: (Dollars in millions) September 30, 2021 December 31, 2020 Investments in qualified affordable housing projects, net $ 920 $ 616 Other liabilities 471 370 The following table presents other information relating to our investments in qualified affordable housing projects for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Tax credits and other tax benefits recognized $ 9 $ 15 $ 63 $ 47 Amortization expense included in provision for income taxes (i) 17 10 48 32 (i) All investments are amortized using the proportional amortization method and amortization expense is included in the provision for income taxes. The following table presents the net gains and losses on non-marketable and other equity securities for the three and nine months ended September 30, 2021 and 2020 as recorded in the line item “Gains on investment securities, net," a component of noninterest income: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Net gains (losses) on non-marketable and other equity securities: Non-marketable securities (fair value accounting): Consolidated venture capital and private equity fund investments $ 36 $ 9 $ 72 $ 13 Unconsolidated venture capital and private equity fund investments 47 16 79 15 Other investments without a readily determinable fair value (2) — 11 (4) Other equity securities in public companies (fair value accounting) (39) 113 53 119 Non-marketable securities (equity method accounting): Venture capital and private equity fund investments 144 51 438 70 Debt funds — — 2 — Other investments 3 1 6 (3) Total net gains on non-marketable and other equity securities $ 189 $ 190 $ 661 $ 210 Less: realized net gains (losses) on sales of non-marketable and other equity securities (17) 5 110 6 Net gains on non-marketable and other equity securities still held $ 206 $ 185 $ 551 $ 204

Loans, Allowance for Loan Losse

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Loans and Allowance for Credit Losses: Loans and Unfunded Credit Commitments	Loans and Allowance for Credit Losses: Loans and Unfunded Credit CommitmentsWe serve a variety of commercial clients in the private equity/venture capital, technology, life science/healthcare, premium wine and commercial real estate industries. Loans made to private equity/venture capital firm clients typically enable them to fund investments prior to their receipt of funds from capital calls and are reported under the Global Fund Banking class of financing receivable below. Our technology clients generally tend to be in the industries of hardware (such as semiconductors, communications, data, storage and electronics), software/internet (such as infrastructure software, applications, software services, digital content and advertising technology) and ERI. Our life science/healthcare clients primarily tend to be in the industries of biotechnology, medical devices, healthcare information technology and healthcare services. Loans to our technology and life science/healthcare clients are reported under the Investor Dependent, Cash Flow Dependent - SLBO and Innovation C&I classes of financing receivable below. We also make commercial and industrial loans, such as working capital lines and term loans for equipment and fixed assets, to clients that are not in the technology and life science/healthcare industries, which are reported in the Other C&I class of financing receivable below. Loans to the premium wine industry focus on vineyards and wineries that produce grapes and wines of high quality. Commercial real estate loans are generally acquisition financing for commercial properties such as office buildings, retail properties, apartment buildings, and industrial/warehouse space. In addition to commercial loans, we make consumer loans through SVB Private Bank and provide real estate secured loans to eligible employees through our EHOP. We also provide community development loans made as part of our responsibilities under the CRA. These loans are included within “construction loans” below and are primarily secured by real estate. Additionally, beginning in April 2020, we accepted applications under the PPP administered by the SBA under the Coronavirus Aid, Relief, and Economic Security Act (the "CARES Act") and originated loans to qualified small businesses. Disbursement of PPP funds under the CARES Act originally expired on August 8, 2020, however, on December 27, 2020, the Economic Aid to Hard-Hit Small Businesses, Nonprofits, and Venues Act (the "Economic Aid Act") was enacted, which extended the application period for PPP loans up to March 31, 2021, and allowed for certain PPP borrowers to apply for second draw loans. The disbursement phase of the PPP was further extended to June 30, 2021 pursuant to the PPP Extension Act of 2021. Loan Portfolio Segments and Classes of Financing Receivables Upon the completion of the acquisition of Boston Private on July 1, 2021, we modified our portfolio segments and classes of financing receivables to accommodate Boston Private loans. Refer to Note 1 — “Basis of Presentation” for additional information on our current portfolio segments and classes of financing receivables. For the periods presented prior to September 30, 2021, the following reclassifications have been made to conform to the current period presentation: • Investor Dependent "Mid Stage" and "Later Stage" loans have been combined and presented as "Growth Stage." • "Cash Flow Dependent - Other" and " Balance Sheet Dependent" loans have been combined and presented as "Innovation C&I." Additionally, refer to Note 2 — “Business Combination” for information regarding the Boston Private acquisition. The composition of loans at amortized cost basis broken out by class of financing receivable at September 30, 2021 and December 31, 2020 is presented in the following table: (Dollars in millions) September 30, 2021 December 31, 2020 Global fund banking $ 34,120 $ 25,543 Investor dependent: Early stage 1,550 1,486 Growth stage 3,827 3,486 Total investor dependent 5,377 4,972 Cash flow dependent - SLBO 1,895 1,989 Innovation C&I 5,916 5,136 Private bank (4) 8,370 4,901 CRE (4) 2,753 — Premium wine (4) 980 1,053 Other C&I 1,259 — Other (4) 252 28 PPP 565 1,559 Total loans (1) (2) (3) $ 61,487 $ 45,181 ACL (398) (448) Net loans $ 61,089 $ 44,733 (1) Total loans at amortized cost is net of unearned income of $240 million and $226 million at September 30, 2021 and December 31, 2020, respectively. (2) Included within our total loan portfolio are credit card loans of $548 million and $400 million at September 30, 2021 and December 31, 2020, respectively. (3) Included within our total loan portfolio are construction loans of $320 million and $118 million at September 30, 2021 and December 31, 2020, respectively. (4) Of our total loans, the table below includes those secured by real estate at amortized cost at September 30, 2021 and December 31, 2020 and were comprised of the following: (Dollars in millions) September 30, 2021 December 31, 2020 Real estate secured loans: Private bank: Loans for personal residence $ 6,684 $ 3,392 Loans to eligible employees 449 481 Home equity lines of credit 131 43 Other 136 143 Total private bank loans secured by real estate $ 7,400 $ 4,059 CRE: Multifamily and residential investment 1,047 — Retail 564 — Office and medical 540 — Manufacturing, industrial and warehouse 309 — Hospitality 155 — Other 138 — Total CRE loans secured by real estate $ 2,753 $ — Premium wine 795 824 Other 281 57 Total real estate secured loans $ 11,229 $ 4,940 Credit Quality Indicators For each individual client, we establish an internal credit risk rating for that loan, which is used for assessing and monitoring credit risk as well as performance of the loan and the overall portfolio. Our internal credit risk ratings are also used to summarize the risk of loss due to failure by an individual borrower to repay the loan. For our internal credit risk ratings, each individual loan is given a risk rating of 1 through 10. Loans risk-rated 1 through 4 are performing loans and translate to an internal rating of “Pass,” with loans risk-rated 1 being cash secured. Loans risk-rated 5 through 7 are performing loans; however, we consider them as demonstrating higher risk, which requires more frequent review of the individual exposures; these translate to an internal rating of “Criticized.” All of our nonaccrual loans are risk-rated 8 or 9 and are classified with the internal rating of "Nonperforming." Loans rated 10 are charged-off and are not included as part of our loan portfolio balance. We review our credit quality indicators on a quarterly basis for performance and appropriateness of risk ratings as part of our evaluation process for our ACL for loans. The following tables summarize the credit quality indicators, broken out by class of financing receivable and vintage year, as of September 30, 2021 and December 31, 2020: Term Loans by Origination Year September 30, 2021 (Dollars in millions) 2021 2020 2019 2018 2017 Prior Revolving Loans Revolving Loans Converted to Term Loans Unallocated (1) Total Global fund banking: Risk rating: Pass $ 470 $ 111 $ 40 $ 54 $ 12 $ 6 $ 33,423 $ — $ — $ 34,116 Criticized — — — — — — 3 1 — 4 Nonperforming — — — — — — — — — — Total global fund banking $ 470 $ 111 $ 40 $ 54 $ 12 $ 6 $ 33,426 $ 1 $ — $ 34,120 Investor dependent: Early stage: Risk rating: Pass $ 605 $ 386 $ 174 $ 35 $ 8 $ 1 $ 149 $ — $ — $ 1,358 Criticized 26 99 31 5 1 — 26 — — 188 Nonperforming — — 3 1 — — — — — 4 Total early stage $ 631 $ 485 $ 208 $ 41 $ 9 $ 1 $ 175 $ — $ — $ 1,550 Growth stage: Risk rating: Pass $ 1,609 $ 1,120 $ 369 $ 113 $ 22 $ 2 $ 316 $ 5 $ — $ 3,556 Criticized 80 84 51 4 1 — 25 — — 245 Nonperforming — 14 1 3 — — 8 — — 26 Total growth stage $ 1,689 $ 1,218 $ 421 $ 120 $ 23 $ 2 $ 349 $ 5 $ — $ 3,827 Total investor dependent $ 2,320 $ 1,703 $ 629 $ 161 $ 32 $ 3 $ 524 $ 5 $ — $ 5,377 Cash flow dependent - SLBO: Risk rating: Pass $ 780 $ 489 $ 280 $ 94 $ 85 $ — $ 34 $ — $ — $ 1,762 Criticized 2 14 18 39 10 13 3 — — 99 Nonperforming — — 12 10 7 — 5 — — 34 Total cash flow dependent - SLBO $ 782 $ 503 $ 310 $ 143 $ 102 $ 13 $ 42 $ — $ — $ 1,895 Innovation C&I Risk rating: Pass $ 1,426 $ 1,298 $ 334 $ 260 $ 131 $ 3 $ 1,983 $ — $ — $ 5,435 Criticized 35 112 73 17 — — 244 — — 481 Nonperforming — — — — — — — — — — Total innovation C&I $ 1,461 $ 1,410 $ 407 $ 277 $ 131 $ 3 $ 2,227 $ — $ — $ 5,916 Private bank: Risk rating: Pass $ 2,163 $ 2,159 $ 1,259 $ 566 $ 496 $ 1,053 $ 625 $ 10 $ — $ 8,331 Criticized — — 6 2 4 13 3 — — 28 Nonperforming — — — 1 — 9 — 1 — 11 Total private bank $ 2,163 $ 2,159 $ 1,265 $ 569 $ 500 $ 1,075 $ 628 $ 11 $ — $ 8,370 CRE Risk rating: Pass $ 256 $ 249 $ 359 $ 160 $ 263 $ 927 $ 120 $ 15 $ — $ 2,349 Criticized 3 29 109 50 50 125 19 — — 385 Nonperforming — — 5 14 — — — — — 19 Total CRE $ 259 $ 278 $ 473 $ 224 $ 313 $ 1,052 $ 139 $ 15 $ — $ 2,753 Premium wine: Risk rating: Pass $ 129 $ 131 $ 182 $ 68 $ 66 $ 148 $ 114 $ 34 $ — $ 872 Criticized 2 12 11 16 — 38 12 — — 91 Nonperforming — — 7 — 10 — — — — 17 Total premium wine $ 131 $ 143 $ 200 $ 84 $ 76 $ 186 $ 126 $ 34 $ — $ 980 Other C&I Risk rating: Pass $ 159 $ 179 $ 96 $ 93 $ 33 $ 310 $ 324 $ 10 $ — $ 1,204 Criticized 5 4 10 9 2 2 15 5 — 52 Nonperforming — — — 1 — 1 1 — — 3 Total other C&I $ 164 $ 183 $ 106 $ 103 $ 35 $ 313 $ 340 $ 15 $ — $ 1,259 Other: Risk rating: Pass $ 25 $ 114 $ 97 $ 21 $ 13 $ — $ 4 $ — $ (29) $ 245 Criticized — — 1 3 3 — — — — 7 Nonperforming — — — — — — — — — — Total other $ 25 $ 114 $ 98 $ 24 $ 16 $ — $ 4 $ — $ (29) $ 252 PPP: Risk rating: Pass $ 387 $ 120 $ — $ — $ — $ — $ — $ — $ — $ 507 Criticized 27 31 — — — — — — — 58 Nonperforming — — — — — — — — — — Total PPP $ 414 $ 151 $ — $ — $ — $ — $ — $ — $ — $ 565 Total loans $ 8,189 $ 6,755 $ 3,528 $ 1,639 $ 1,217 $ 2,651 $ 37,456 $ 81 $ (29) $ 61,487 (1) These amounts consist of fees and clearing items that have not yet been allocated at the loan level. Term Loans by Origination Year December 31, 2020 (Dollars in millions) 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Global fund banking: Risk rating: Pass $ 440 $ 48 $ 69 $ 23 $ 2 $ 6 $ 24,947 $ 2 $ 25,537 Criticized — — — — — — — 6 6 Nonperforming — — — — — — — — — Total global fund banking $ 440 $ 48 $ 69 $ 23 $ 2 $ 6 $ 24,947 $ 8 $ 25,543 Investor dependent: Early stage: Risk rating: Pass $ 667 $ 370 $ 121 $ 32 $ 1 $ 1 $ 96 $ 1 $ 1,289 Criticized 47 73 26 10 4 — 19 — 179 Nonperforming 2 9 5 1 — — 1 — 18 Total early stage $ 716 $ 452 $ 152 $ 43 $ 5 $ 1 $ 116 $ 1 $ 1,486 Growth stage: Risk rating: Pass $ 1,746 $ 696 $ 316 $ 61 $ 5 $ 9 $ 325 $ 8 $ 3,166 Criticized 65 103 56 9 — 7 47 — 287 Nonperforming 17 3 4 3 — — 6 — 33 Total growth stage $ 1,828 $ 802 $ 376 $ 73 $ 5 $ 16 $ 378 $ 8 $ 3,486 Total investor dependent $ 2,544 $ 1,254 $ 528 $ 116 $ 10 $ 17 $ 494 $ 9 $ 4,972 Cash flow dependent - SLBO: Risk rating: Pass $ 791 $ 452 $ 274 $ 167 $ 37 $ — $ 75 $ — $ 1,796 Criticized — 70 39 22 13 — 9 — 153 Nonperforming — 12 16 7 — — 5 — 40 Total cash flow dependent - SLBO $ 791 $ 534 $ 329 $ 196 $ 50 $ — $ 89 $ — $ 1,989 Innovation C&I: Risk rating: Pass $ 1,718 $ 703 $ 378 $ 152 $ 39 $ — $ 1,791 $ 1 $ 4,782 Criticized 75 72 34 4 — — 163 — 348 Nonperforming — — 5 — — — 1 — 6 Total sponsor led buyout $ 1,793 $ 775 $ 417 $ 156 $ 39 $ — $ 1,955 $ 1 $ 5,136 Private bank: Risk rating: Pass $ 1,878 $ 1,153 $ 394 $ 353 $ 295 $ 406 $ 382 $ 1 $ 4,862 Criticized 3 10 5 1 5 8 1 — 33 Nonperforming — — 3 — — 2 1 — 6 Total private bank $ 1,881 $ 1,163 $ 402 $ 354 $ 300 $ 416 $ 384 $ 1 $ 4,901 Premium wine: Risk rating: Pass $ 127 $ 194 $ 71 $ 79 $ 115 $ 154 $ 135 $ 36 $ 911 Criticized 18 24 36 10 13 6 34 — 141 Nonperforming — — — — 1 — — — 1 Total Premium wine $ 145 $ 218 $ 107 $ 89 $ 129 $ 160 $ 169 $ 36 $ 1,053 Other: Risk rating: Pass $ — $ 16 $ 11 $ — $ — $ 1 $ — $ — $ 28 Criticized — — — — — — — — — Nonperforming — — — — — — — — — Total other $ — $ 16 $ 11 $ — $ — $ 1 $ — $ — $ 28 PPP: Risk rating: Pass $ 1,456 $ — $ — $ — $ — $ — $ — $ — $ 1,456 Criticized 103 — — — — — — — 103 Nonperforming — — — — — — — — — Total PPP $ 1,559 $ — $ — $ — $ — $ — $ — $ — $ 1,559 Total loans $ 9,153 $ 4,008 $ 1,863 $ 934 $ 530 $ 600 $ 28,038 $ 55 $ 45,181 Allowance for Credit Losses: Loans In the third quarter of 2021, the ACL for loans increased by $2 million from the prior quarter, driven primarily by growth in our loan portfolio, both from the acquisition of Boston Private and organic, which was offset by enhancements made to our allowance model and improved economic conditions within our forecasted assumptions. The Moody's Analytics September 2021 forecast was utilized in our quantitative model for the ACL as of September 30, 2021 for both legacy and acquired loans. The forecast assumptions included an improvement in the unemployment rate and a strong forecasted gross domestic product growth rate, both as a result of ongoing economic stabilization as the pandemic's impact begins to subside. We determined the forecast to be a reasonable view of the outlook for the economy given the available information at current quarter end. To the extent we identified credit risk considerations that were not captured by the Moody's Analytics September 2021 forecast, we addressed the risk through management's qualitative adjustments to our ACL. The enhancements made to our legacy reserving model were made in normal course, with the primary enhancements being the addition of two years of portfolio data, more granular prepayment models and the re-selection of macroeconomic variables. We do not estimate expected credit losses on AIR on loans, as AIR is reversed or written off when the full collection of the AIR related to a loan becomes doubtful. AIR on loans totaled $160 million at September 30, 2021 and $126 million at December 31, 2020 and is reported in "Accrued interest receivable and other assets" in our unaudited interim consolidated balance sheets. The following tables summarize the activity relating to our ACL for loans for the three and nine months ended September 30, 2021 and 2020, broken out by portfolio segment: Three months ended September 30, 2021 Beginning Balance June 30, 2021 Initial Allowance on PCD Loans Charge-offs Recoveries (Reduction) Provision for Credit Losses (1) Ending Balance September 30, 2021 (Dollars in millions) Global fund banking $ 66 $ — $ — $ — $ (7) $ 59 Investor dependent 158 — (17) 5 (8) 138 Cash flow dependent and innovation C&I 119 — (1) 3 (12) 109 Private bank 47 1 (1) — (16) 31 CRE — 17 — — 23 40 Other C&I — 4 — — 8 12 Premium wine and other 6 — — — 3 9 Total ACL $ 396 $ 22 $ (19) $ 8 $ (9) $ 398 (1) The provision for loan losses for the three months ended September 30, 2021 includes a post-combination provision of $44 million related to non-PCD loans from the Boston Private acquisition. Three months ended September 30, 2020 Beginning Balance June 30, 2020 Charge-offs Recoveries (Reduction) Provision for Credit Losses Foreign Currency Translation Adjustments Ending Balance September 30, 2020 (Dollars in millions) Global fund banking $ 54 $ — $ — $ (15) $ — $ 39 Investor dependent 292 (28) 4 (5) — 263 Cash flow dependent and innovation C&I 123 — — (2) — 121 Private Bank 91 — — (15) — 76 Premium wine and other 26 — — (16) 1 11 PPP 4 — — (1) — 3 Total ACL $ 590 $ (28) $ 4 $ (54) $ 1 $ 513 Nine months ended September 30, 2021 Beginning Balance December 31, 2020 Initial Allowance on PCD Loans Charge-offs Recoveries Provision (Reduction) for Credit Losses (1) Ending Balance September 30, 2021 (Dollars in millions) Global fund banking $ 46 $ — $ (80) $ — $ 93 $ 59 Investor dependent 213 — (37) 13 (51) 138 Cash flow dependent and innovation C&I 125 — (8) 3 (11) 109 Private bank 53 1 (3) — (20) 31 CRE — 17 — — 23 40 Other C&I — 4 — — 8 12 Premium wine and other 9 — (1) — 1 9 PPP 2 — — — (2) — Total ACL $ 448 $ 22 $ (129) $ 16 $ 41 $ 398 (1) The provision for loan losses for the nine months ended September 30, 2021 includes a post-combination provision of $44 million related to non-PCD loans from the Boston Private acquisition. Nine months ended September 30, 2020 Beginning Balance December 31, 2019 Impact of Adopting ASC 326 Charge-offs Recoveries Provision (Reduction) for Credit Losses Foreign Currency Translation Adjustments Ending Balance September 30, 2020 (Dollars in millions) Global fund banking $ 107 $ (70) $ — $ — $ 2 $ — $ 39 Investor dependent 82 72 (67) 12 165 (1) 263 Cash flow dependent and innovation C&I 81 (1) (11) 3 50 (1) 121 Private bank 22 12 (2) — 44 — 76 Premium wine and other 13 12 — 1 (17) 2 11 PPP — — — — 3 — 3 Total ACL $ 305 $ 25 $ (80) $ 16 $ 247 $ — $ 513 The following table summarizes the aging of our loans broken out by class of financing receivable as of September 30, 2021 and December 31, 2020: (Dollars in millions) 30 - 59 60 - 89 Equal to or Greater Total Past Current Total Loans Past Due September 30, 2021: Global fund banking $ — $ — $ — $ — $ 34,120 $ 34,120 $ — Investor dependent: Early stage 1 — — 1 1,549 1,550 — Growth stage 2 — — 2 3,825 3,827 — Total investor dependent 3 — — 3 5,374 5,377 — Cash flow dependent - SLBO — — — — 1,895 1,895 — Innovation C&I 1 3 — 4 5,912 5,916 — Private bank 1 2 8 11 8,359 8,370 2 CRE 14 — — 14 2,739 2,753 — Premium wine — — 17 17 963 980 — Other C&I 3 1 1 5 1,254 1,259 — Other — — — — 252 252 — PPP — — 1 1 564 565 1 Total loans $ 22 $ 6 $ 27 $ 55 $ 61,432 $ 61,487 $ 3 December 31, 2020: Global fund banking $ 28 $ — $ — $ 28 $ 25,515 $ 25,543 $ — Investor dependent: Early stage 6 2 — 8 1,478 1,486 — Growth stage 11 — 1 12 3,474 3,486 — Total investor dependent 17 2 1 20 4,952 4,972 — Cash flow dependent - SLBO — — — — 1,989 1,989 — Innovation C&I 7 1 — 8 5,128 5,136 — Private bank 4 4 — 8 4,893 4,901 — Premium wine 3 — 1 4 1,049 1,053 — Other — — — — 28 28 — PPP — — — — 1,559 1,559 — Total loans $ 59 $ 7 $ 2 $ 68 $ 45,113 $ 45,181 $ — Nonaccrual Loans The following table summarizes our nonaccrual loans with no allowance for credit loss at September 30, 2021 and December 31, 2020: September 30, 2021 December 31, 2020 (Dollars in millions) Nonaccrual Loans Nonaccrual Loans with no Allowance for Credit Loss Nonaccrual Loans Nonaccrual Loans with no Allowance for Credit Loss Investor dependent: Early stage $ 4 $ — $ 18 $ — Growth stage 26 — 33 3 Total investor dependent 30 — 51 3 Cash flow dependent - SLBO 34 — 40 — Innovation C&I — — 6 1 Private bank 11 2 6 3 CRE 19 — — — Premium wine 17 17 1 1 Other C&I 3 — — — Total nonaccrual loans (1) $ 114 $ 19 $ 104 $ 8 (1) Nonaccrual loans at September 30, 2021 include $31 million of loans that were acquired from Boston Private. TDRs As of September 30, 2021, we had 57 TDRs with a total carrying value of $122 million where concessions have been granted to borrowers experiencing financial difficulties, in an attempt to maximize collection. There was less than $1 million of unfunded commitments available for funding to the clients associated with these TDRs as of September 30, 2021. The following table summarizes our loans modified in TDRs, broken out by class of financing receivable at September 30, 2021 and December 31, 2020: (Dollars in millions) September 30, 2021 December 31, 2020 Loans modified in TDRs: Investor dependent: Early stage $ — $ 7 Growth stage 26 29 Total investor dependent 26 36 Cash flow dependent - SLBO 34 22 Innovation C&I — 1 Private bank 10 — CRE 48 — Premium wine 2 2 Other C&I 2 — Total loans modified in TDRs (1) $ 122 $ 61 (1) Loans modified in TDRs at September 30, 2021 include 48 loans with a total balance of $60 million that were acquired from Boston Private. The following table summarizes the recorded investment in loans modified in TDRs, broken out by class of financing receivable, for modifications made during the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Loans modified in TDRs during the period: Investor dependent: Early stage $ — $ 4 $ 1 $ 4 Growth stage 8 — 8 4 Total investor dependent 8 4 9 8 Cash flow dependent - SLBO — 21 12 21 Innovation C&I — 1 — 2 Private bank 2 — 2 — CRE 43 — 43 — Premium wine — — — 1 Total loans modified in TDRs during the period (1) (2) $ 53 $ 26 $ 66 $ 32 (1) There were no partial charge-offs for the three months ended September 30, 2021 and $7 million for the nine months then ended, compared to $14 million and $31 million of partial charge-offs for the three and nine months ended September 30, 2020, respectively. (2) Loans modified in TDRs during the three and nine months ended September 30, 2021 include $45 million of loans acquired from Boston Private that were subsequently modified in TDRs. During the three months ended September 30, 2021, new TDRs of $17 million were modified through payment deferrals granted to our clients, $14 million were modified through term extensions and $22 million were modified through a combination thereof. During the three months ended September 30, 2020, new TDRs of $25 million were modified through payment deferrals and $1 million through forgiveness of principal. During the nine months ended September 30, 2021, new TDRs of $30 million were modified through payment deferrals granted to our clients, $14 million were modified through term extensions and $22 million were modified through a combination thereof. During the nine months ended September 30, 2020, new TDRs of $31 million were modified through payment deferrals and $1 million through forgiveness of principal. The following table summarizes the recorded investment in loans modified in TDRs within the previous 12 months that subsequently defaulted during the three and nine months ended September 30, 2021 and September 30, 2020: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 TDRs modified within the previous 12 months that defaulted during the period: Premium wine $ — $ 1 $ — $ 1 Total TDRs modified within the previous 12 months that defaulted in the period $ — $ 1 $ — $ 1 Charge-offs and defaults on previously restructured loans are evaluated to determine the impact to the ACL for loans, if any. The evaluation of these defaults may impact the assumptions used in calculating the reserve on other TDRs and nonaccrual loans as well as management’s overall outlook of macroeconomic factors that affect the reserve on the loan portfolio as a whole. After evaluating the charge-offs and defaults experienced on our TDRs we determined that no change to our reserving methodology for TDRs was necessary to determine the ACL for loans as of September 30, 2021. ACL: Unfunded Credit Commitments We maintain a separate ACL for unfunded credit commitments that is determined using a methodology that is inherently similar to the methodology used for calculating the ACL for loans. At September 30, 2021 , our ACL estimates utilized the Moody's economic forecasts from September 2021 as mentioned above. In the third quarter of 2021, the ACL for unfunded commitments increased by $29 million from the prior quarter, driven primarily by growth in our outstanding commitments and compositional changes in our portfolio. The following table summarizes the activity relating to our ACL for unfunded credit commitments for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 ACL: unfunded credit commitments, beginning balance $ 120 $ 99 $ 121 $ 67 Impact of adopting ASC 326 — — — 23 Provision for credit losses (1) 29 2 28 11 ACL: unfunded credit commitments, ending balance (2) $ 149 $ 101 $ 149 $ 101 (1) The provision for credit losses for unfunded credit commitments for the three and nine months ended September 30, 2021 includes a post-combination provision of $2 million related to commitments acquired from Boston Private. (2) The “ACL: unfunded credit commitments” is included as a component of “other liabilities” on our unaudited interim consolidated balance sheets. See Note 12 — “Off-Balance Sheet Arrangements, Guarantees and Other Commitments” of this report for additional disclosures related to our commitments to extend credit.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill Goodwill was $344 million at September 30, 2021 compared to $143 million at December 31, 2020, which was a result of additional goodwill recognized for the acquisition of Boston Private effective July 1, 2021. The changes in goodwill were as follows for the nine months ended September 30, 2021: (Dollars in millions) Goodwill Beginning balance at December 31, 2020 $ 143 Acquisitions 201 Ending balance at September 30, 2021 $ 344 Other Intangible Assets The components of net other intangible assets were as follows: September 30, 2021 December 31, 2020 (Dollars in millions) Gross Amount Accumulated Amortization Net Carrying Amount Gross Amount Accumulated Amortization Net Carrying Amount Other intangible assets: Customer relationships $ 127 $ 12 $ 115 $ 42 $ 8 $ 34 Other 55 14 41 36 9 27 Total other intangible assets $ 182 $ 26 $ 156 $ 78 $ 17 $ 61 For the nine months ended September 30, 2021, we recorded amortization expense of $9 million. Assuming no future impairments of other intangible assets or additional acquisitions or dispositions, the following table presents the Company's future expected amortization expense for other intangible assets that will continue to be amortized as of September 30, 2021: Years ended December 31, Other 2021 (excluding the nine months ended September 30, 2021) $ 9 2022 21 2023 19 2024 18 2025 15 2026 and thereafter 74 Total future amortization expense $ 156

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments We primarily use derivative financial instruments to manage interest rate risk and currency exchange rate risk and to assist customers with their risk management objectives, which may include currency exchange rate risks and interest rate risks. Also, in connection with negotiating credit facilities and certain other services, we often obtain equity warrant assets giving us the right to acquire stock in private, venture-backed companies in the technology and life science/healthcare industries. Interest Rate Risk Interest rate risk is our primary market risk and can result from timing and volume differences in the repricing of our interest rate sensitive assets and liabilities and changes in market interest rates. To manage interest rate risk on our interest rate sensitive assets, we have entered into interest rate swap contracts to hedge against future changes in interest rates. We designate these interest rate swap contracts as fair value and cash flow hedges. Fair Value Hedges To manage interest rate risk on our AFS securities portfolio, we enter into pay-fixed, receive-floating interest rate swap contracts to hedge against exposure to changes in the fair value of the securities resulting from changes in interest rates. We designate these interest rate swap contracts as fair value hedges that qualify for hedge accounting under ASC 815, Derivatives and Hedging ("ASC 815") and have elected to account for a portion of them using the last-of-layer method as outlined in ASC 815. We record the fair value hedges in other assets and other liabilities. For qualifying fair value hedges, both the changes in the fair value of the derivative and the portion of the fair value adjustments associated with the last-of-layer attributable to the hedged risk will be recognized into earnings as they occur. Derivative amounts affecting earnings are recognized consistent with the classification of the hedged item in the line item "investment securities" 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 and hedge accounting under ASC 815 can be applied. In conjunction with the assessment of effectiveness, we assess the hedged item to ensure it is expected to be outstanding at the hedged item’s assumed maturity date and the last-of-layer method of 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 remaining fair value basis adjustments are allocated to the individual assets in the portfolio and amortized into earnings over a period consistent with the amortization of other discounts and premiums associated with the respective assets. As allowed under GAAP, we applied the "shortcut" method of accounting to a portion of our fair value hedges which assumes there is perfect effectiveness. The following table summarizes the amortized cost basis of hedged assets that are designated and qualify as fair value hedges and the cumulative amount of fair value hedging adjustments included in the carrying value that have been recorded on our unaudited interim consolidated balance sheets as of September 30, 2021: September 30, 2021 (Dollars in millions) Amortized Cost Basis of the Hedged Assets Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets (2) AFS securities (1) $ 17,524 $ (13) (1) These amounts include the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the last layer expected to be remaining at the end of the hedging relationship. At September 30, 2021, the amortized cost basis of the closed portfolios used in these hedging relationships was $13.4 billion, the amounts of the designated hedged items was $7.3 billion and the cumulative basis adjustments associated with these hedging relationships was $13 million. (2) The balance includes $6 million of hedging adjustments on discontinued hedging relationships at September 30, 2021. Cash Flow Hedges 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 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 AOCI 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 and 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 AOCI are reclassified into earnings in the line item "loans" as part of interest income, a component of consolidated net income. As of March 31, 2020, all derivatives previously classified as hedges with notional balances totaling $5.0 billion and a net asset fair value of $228 million were terminated. As of September 30, 2021, the total unrealized gains on terminated cash flow hedges remaining in AOCI was $132 million, $95 million net of tax. The unrealized gains will be reclassified into interest income as the underlying forecasted transactions impact earnings through the original maturity of the hedged forecasted transactions. The total remaining term over which the unrealized gains will be reclassified into earnings is approximately four years. Currency Exchange Risk We enter into foreign exchange forward contracts to economically reduce our foreign exchange exposure risk associated with the net difference between foreign currency denominated assets and liabilities. We do not designate any foreign exchange forward contracts as derivative instruments that qualify for hedge accounting. Gains or losses from changes in currency rates on foreign currency denominated instruments are recorded in the line item “other” as part of noninterest income, a component of consolidated net income. We may experience ineffectiveness in the economic hedging relationship, because the instruments are revalued based upon changes in the currency’s spot rate on the principal value, while the forwards are revalued on a discounted cash flow basis. We record forward agreements in gain positions in other assets and loss positions in other liabilities, while net changes in fair value are recorded in the line item “other” as part of noninterest income, a component of consolidated net income. Other Derivative Instruments Also included in our derivative instruments are equity warrant assets and client forward and option contracts, and client interest rate contracts. For further description of these other derivative instruments, refer to Note 2 — “Summary of Significant Accounting Policies" under Part II, Item 8 of our 2020 Form 10-K. Counterparty Credit Risk We are exposed to credit risk if counterparties to our derivative contracts do not perform as expected. We mitigate counterparty credit risk through credit approvals, limits, monitoring procedures and obtaining collateral, as appropriate. With respect to measuring counterparty credit risk for derivative instruments, we measure the fair value of a group of financial assets and financial liabilities on a net risk basis by counterparty portfolio. The total notional or contractual amounts and fair value of our derivative financial instruments at September 30, 2021 and December 31, 2020 were as follows: September 30, 2021 December 31, 2020 Notional or Fair Value Notional or Fair Value (Dollars in millions) Derivative Assets (1) Derivative Liabilities (1) Derivative Assets (1) Derivative Liabilities (1) Derivatives designated as hedging instruments: Interest rate risks: Interest rate swaps (2) $ 9,175 $ 14 $ — $ — $ — $ — Interest rate swaps 2,125 — — — — — Derivatives not designated as hedging instruments: Currency exchange risks: Foreign exchange forwards and swaps 651 12 — 68 — — Foreign exchange forwards and swaps 80 — 1 567 — 20 Other derivative instruments: Equity warrant assets 309 274 — 253 203 — Client foreign exchange forwards and swaps 8,974 171 — 8,026 215 — Client foreign exchange forwards and swaps 8,652 — 155 7,491 — 188 Client foreign currency options 196 2 — 98 2 — Client foreign currency options 196 — 2 98 — 2 Client interest rate derivatives 2,249 115 — 1,082 68 — Client interest rate derivatives (2) 2,264 — 116 1,251 — 27 Total derivatives not designated as hedging instruments 574 274 488 237 Total derivatives $ 588 $ 274 $ 488 $ 237 (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 $5 million of derivative assets and $45 million of derivative liabilities at September 30, 2021 and December 31, 2020, respectively, reflecting variation margin treated as settlement of the related derivative fair values for legal and accounting purposes as required by central clearing houses. A summary of our derivative activity and the related impact on our consolidated statements of income for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) Statement of income location 2021 2020 2021 2020 Derivatives designated as hedging instruments: Interest rate risks: Amounts reclassified from AOCI into income Interest income - loans $ 16 $ 16 $ 47 $ 34 Change in fair value of interest rate swaps hedging investment securities Interest income - investment securities taxable 5 — 18 — Change in fair value of hedged investment securities Interest income - investment securities taxable (6) — (19) — Net gains associated with interest rate risk derivatives $ 15 $ 16 $ 46 $ 34 Derivatives not designated as hedging instruments: Currency exchange risks: (Losses) gains on revaluations of internal foreign currency instruments, net Other noninterest income $ (14) $ 17 (35) $ 20 Gains (losses) on internal foreign exchange forward contracts, net Other noninterest income 14 (19) 35 (20) Net gains (losses) associated with internal currency risk $ — $ (2) $ — $ — Other derivative instruments: Gains (losses) on revaluations of client foreign currency instruments, net Other noninterest income $ 1 $ — $ 16 $ (3) (Losses) gains on client foreign exchange forward contracts, net Other noninterest income (5) 2 (15) 2 Net (losses) gains associated with client currency risk $ (4) $ 2 $ 1 $ (1) Net gains on equity warrant assets Gains on equity warrant assets, net $ 147 $ 54 $ 491 $ 94 Net gains on other derivatives Other noninterest income $ 2 $ 31 $ 4 $ 27 Balance Sheet Offsetting Certain of our derivative and other financial instruments are subject to enforceable master netting arrangements with our counterparties. These agreements provide for the net settlement of multiple contracts with a single counterparty through a single payment, in a single currency, in the event of default on or termination of any one contract. The following table summarizes our assets subject to enforceable master netting arrangements as of September 30, 2021 and December 31, 2020: Gross Amounts of Recognized Assets Gross Amounts offset in the Statement of Financial Position Net Amounts of Assets Presented in the Statement of Financial Position Gross Amounts Not Offset in the Statement of Financial Position but Subject to Master Netting Arrangements Net Amount (Dollars in millions) Financial Instruments Cash Collateral Received (1) September 30, 2021 Derivative assets: Interest rate swaps $ 14 $ — $ 14 $ — $ (7) $ 7 Foreign exchange forwards and swaps 183 — 183 (71) (33) 79 Foreign currency options 2 — 2 — — 2 Client interest rate derivatives 115 — 115 (113) (2) — Total derivative assets 314 — 314 (184) (42) 88 Reverse repurchase, securities borrowing, and similar arrangements 216 — 216 (216) — — Total $ 530 $ — $ 530 $ (400) $ (42) $ 88 December 31, 2020 Derivative assets: Interest rate swaps $ — $ — $ — $ — $ — $ — Foreign exchange forwards and swaps 215 — 215 (76) (21) 118 Foreign currency options 2 — 2 (1) — 1 Client interest rate derivatives 68 — 68 (68) — — Total derivative assets 285 — 285 (145) (21) 119 Reverse repurchase, securities borrowing, and similar arrangements 227 — 227 (227) — — Total $ 512 $ — $ 512 $ (372) $ (21) $ 119 (1) Cash collateral received from our counterparties in relation to market value exposures of derivative contracts in our favor is recorded as a component of “short-term borrowings” on our consolidated balance sheets. The following table summarizes our liabilities subject to enforceable master netting arrangements as of September 30, 2021 and December 31, 2020: Gross Amounts of Recognized Liabilities Gross Amounts offset in the Statement of Financial Position Net Amounts of Liabilities Presented in the Statement of Financial Position Gross Amounts Not Offset in the Statement of Financial Position but Subject to Master Netting Arrangements Net Amount (Dollars in millions) Financial Instruments Cash Collateral Pledged (1) September 30, 2021 Derivative liabilities: Interest rate swaps $ — $ — $ — $ — $ — $ — Foreign exchange forwards and swaps 156 — 156 (66) (14) 76 Foreign currency options 2 — 2 (1) (1) — Client interest rate derivatives 116 — 116 (50) (66) — Total derivative liabilities 274 — 274 (117) (81) 76 Repurchase, securities lending, and similar arrangements 97 — 97 — — 97 Total $ 371 $ — $ 371 $ (117) $ (81) $ 173 December 31, 2020 Derivative liabilities: Interest rate swaps $ — $ — $ — $ — $ — $ — Foreign exchange forwards and swaps 208 — 208 (84) (45) 79 Foreign currency options 2 — 2 (1) — 1 Client interest rate derivatives 27 — 27 — (26) 1 Total derivative liabilities 237 — 237 (85) (71) 81 Repurchase, securities lending, and similar arrangements — — — — — — Total $ 237 $ — $ 237 $ (85) $ (71) $ 81 (1) Cash collateral pledged to our counterparties in relation to market value exposures of derivative contracts in a liability position and repurchase agreements are recorded as a component of “cash and cash equivalents " on our consolidated balance sheets.

Noninterest Income

Noninterest Income	9 Months Ended
	Sep. 30, 2021
Other Income and Expenses [Abstract]
Noninterest Income	Noninterest Income All of the Company's revenue from contracts with customers within the scope of ASC 606 is recognized within noninterest income. Included below is a summary of noninterest income for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Noninterest income: Gains on investment securities, net $ 189 $ 190 $ 661 $ 271 Gains on equity warrant assets, net 147 54 491 94 Client investment fees 20 32 55 107 Wealth management and trust fees 22 — 22 — Foreign exchange fees 65 44 189 128 Credit card fees 34 23 93 72 Deposit service charges 29 22 82 67 Lending related fees 21 13 55 38 Letters of credit and standby letters of credit fees 13 12 39 35 Investment banking revenue 90 92 335 281 Commissions 17 16 58 49 Other 25 49 97 76 Total noninterest income $ 672 $ 547 $ 2,177 $ 1,218 Gains on investment securities, net Net gains on investment securities include both gains and losses from our non-marketable and other equity securities, which include public equity securities held as a result of exercised equity warrant assets, gains and losses from sales of our AFS debt securities portfolio, when applicable, and carried interest. Our non-marketable and other equity securities portfolio primarily represents investments in venture capital and private equity funds, SPD-SVB, debt funds, private and public portfolio companies, which includes public equity securities held as a result of exercised equity warrant assets, and qualified affordable housing projects. We experience variability in the performance of our non-marketable and other equity securities from period to period, which results in net gains or losses on investment securities (both realized and unrealized). This variability is due to a number of factors, including unrealized changes in the values of our investments, changes in the amount of realized gains from distributions, changes in liquidity events and general economic and market conditions. Unrealized gains from non-marketable and other equity securities for any single period are typically driven by valuation changes. The extent to which any unrealized gains or losses will become realized is subject to a variety of factors, including, among other things, the expiration of certain sales restrictions to which these equity securities may be subject to (e.g., lock-up agreements), changes in prevailing market prices, market conditions, the actual sales or distributions of securities, and the timing of such actual sales or distributions, which, to the extent such securities are managed by our managed funds, are subject to our funds' separate discretionary sales/distributions and governance processes. Carried interest is comprised of preferential allocations of profits recognizable when the return on assets of our individual managed fund of funds and direct venture funds exceeds certain performance targets and is payable to us, as the general partners of the managed funds. The carried interest we earn is often shared with employees, who are also members of the general partner entities. We record carried interest on a quarterly basis by measuring fund performance to date versus the performance target. For our unconsolidated managed funds, carried interest is recorded as gains on investment securities, net. For our consolidated managed funds, it is recorded as a component of net income attributable to noncontrolling interests. Carried interest allocated to others is recorded as a component of net income attributable to noncontrolling interests. Any carried interest paid to us (or our employees) may be subject to reversal to the extent fund performance declines to a level where inception to date carried interest is lower than actual payments made by the funds. The limited partnership agreements for our funds provide that carried interest is generally not paid to the general partners until the funds have provided a full return of contributed capital to the limited partners. Accrued, but unpaid carried interest may be subject to reversal to the extent that the fund performance declines to a level where inception-to-date carried interest is less than prior amounts recognized. Carried interest income is accounted for under an ownership model based on ASC 323 — Equity Method of Accounting and ASC 810 — Consolidation. Our AFS securities portfolio is a fixed income investment portfolio that is managed with the objective of earning an appropriate portfolio yield over the long-term while maintaining sufficient liquidity and credit diversification as well as addressing our asset/liability management objectives. Though infrequent, sales of debt securities in our AFS securities portfolio may result in net gains or losses and are conducted pursuant to the guidelines of our investment policy related to the management of our liquidity position and interest rate risk. Gains on investment securities are recognized outside of the scope of ASC 606 as it explicitly excludes noninterest income earned from our investment-related activities. A summary of gains and losses on investment securities for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Gains on non-marketable and other equity securities, net $ 189 $ 190 $ 661 $ 210 Gains on sales of AFS securities, net — — — 61 Total gains on investment securities, net $ 189 $ 190 $ 661 $ 271 Gains on equity warrant assets, net In connection with negotiating credit facilities and certain other services, we often obtain rights to acquire stock in the form of equity warrant assets in primarily private, venture-backed companies in the technology and life science/healthcare industries. Any changes in fair value from the grant date fair value of equity warrant assets will be recognized as increases or decreases to other assets on our balance sheet and as net gains or losses on equity warrant assets, in noninterest income, a component of consolidated net income. Gains on equity warrant assets are recognized outside of the scope of ASC 606 as it explicitly excludes noninterest income earned from our derivative-related activities. A summary of net gains on equity warrant assets for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Equity warrant assets: Gains on exercises, net $ 91 $ 24 $ 381 $ 59 Terminations (1) — (2) (1) Changes in fair value, net 57 30 112 36 Total net gains on equity warrant assets $ 147 $ 54 $ 491 $ 94 Client investment fees Client investment fees include fees earned from discretionary investment management services for managing clients’ portfolios based on their investment policies, and strategies and objectives. Revenue is recognized on a monthly basis upon completion of our performance obligation and consideration is typically received in the subsequent month. Included in our sweep money market fees are Rule 12(b)-1 fees, revenue sharing and customer transactional-based fees. Rule 12(b)-1 fees and revenue sharing are recognized as earned based on client funds that are invested in the period, typically monthly. Transactional based fees are earned and recognized on fixed income securities when the transaction is executed on the clients' behalf. Amounts paid to third-party service providers are predominantly expensed, such that client investment fees are recorded gross of payments made to third parties. A summary of client investment fees by instrument type for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Client investment fees by type: Sweep money market fees $ 12 $ 18 $ 31 $ 61 Asset management fees (1) 7 12 22 33 Repurchase agreement fees 1 2 2 13 Total client investment fees (2) $ 20 $ 32 $ 55 $ 107 (1) Represents fees earned from investments in third-party money market mutual funds and fixed-income securities managed by SVB Asset Management. (2) Represents fees earned on client investment funds that are maintained at third-party financial institutions and are not recorded on our balance sheet. Wealth management and trust fees Wealth management and trust fees was a new core fee income line item for the third quarter of 2021 reflective of the acquisition of Boston Private. These fees are earned for providing wealth management, retirement plan advisory, family office, financial planning, trust services and other financial advisory services to clients. The Company’s performance obligation under these contracts is satisfied over time as the services are provided. Fees are recognized monthly based on the average monthly, beginning-of-quarter, or, for a small number of clients, end-of-quarter market value of the Private Bank AUM and the applicable fee rate, depending on the terms of the contracts. Fees are also recognized monthly based either on a fixed fee amount or are based on the quarter-end (in arrears) market value of the Private Bank AUM and the applicable fee rate, depending on the terms of the contracts. No performance-based incentives are earned under wealth management contracts. Receivables are recorded on the Consolidated Balance Sheets in the "Accrued interest receivable and other assets" line item. Trust fees are earned when the Company is appointed as trustee for clients. As trustee, the Company administers the client’s trust and manages the assets of the trust, including investments and property. The Company’s performance obligation under these agreements is satisfied over time as the administration and management services are provided. Fees are recognized monthly or, in certain circumstances, quarterly based on a percentage of the market value of the account as outlined in the agreement. Payment frequency is defined in the individual contracts, which primarily stipulate monthly in arrears. No performance-based incentives are earned on trust fee contracts. Receivables are recorded on the Consolidated Balance Sheets in the "Accrued interest receivable and other assets" line item. A summary of wealth management and trust fees by instrument type for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Wealth management and trust fees by type: Wealth management fees $ 20 $ — $ 20 $ — Trust fees 2 — 2 — Total wealth management and trust fees $ 22 $ — $ 22 $ — Foreign exchange fees Foreign exchange fees represent the income differential between purchases and sales of foreign currency on behalf of our clients, primarily from spot contracts. Foreign exchange spot contract fees are recognized upon the completion of the single performance obligation, the execution of a spot trade in exchange for a fee. In line with customary business practice, the legal right transfers to the client upon execution of a foreign exchange contract on the trade date, and as such, we currently recognize our fees based on the trade date and the transactions are typically settled within two business days. Forward contract and option premium fees are recognized outside of the scope of ASC 606 as it explicitly excludes noninterest income earned from our derivative-related activities. A summary of foreign exchange fee income by instrument type for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Foreign exchange fees by instrument type: Spot contract commissions $ 60 $ 39 $ 175 $ 113 Forward contract commissions 5 5 13 14 Option premium fees — — 1 1 Total foreign exchange fees $ 65 $ 44 $ 189 $ 128 Credit card fees Credit card fees include interchange income from credit and debit cards and fees earned from processing transactions for merchants. Interchange income is earned after satisfying our performance obligation of providing nightly settlement services to a payment network. Costs related to rewards programs are recorded when the rewards are earned by the customer and presented as a reduction to interchange fee income. Rewards programs continue to be accounted for under ASC 310 - Receivables . Our performance obligations for merchant service fees are to transmit data and funds between the merchant and the payment network. Credit card interchange and merchant service fees are earned daily upon completion of transaction settlement services. Annual card service fees are recognized on a straight-line basis over a 12-month period and continue to be accounted for under ASC 310 - Receivables . A summary of credit card fees by instrument type for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Credit card fees by instrument type: Card interchange fees, net $ 29 $ 18 $ 78 $ 55 Merchant service fees 4 4 12 14 Card service fees 1 1 3 3 Total credit card fees $ 34 $ 23 $ 93 $ 72 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" tables below. Lending related fees Unused commitment fees, minimum finance fees and unused line fees are recognized as earned on a monthly basis. Fees that qualify for syndication treatment are recognized at the completion of the syndicated loan deal for which the fees were received. Lending related fees are recognized outside of the scope of ASC 606 as it explicitly excludes noninterest income earned from our lending-related activities. A summary of lending related fees by instrument type for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Lending related fees by instrument type: Unused commitment fees $ 14 $ 10 $ 42 $ 27 Other 7 3 13 11 Total lending related fees $ 21 $ 13 $ 55 $ 38 Letters of credit and standby letters of credit fees Commercial and standby letters of credit represent conditional commitments issued by us on behalf of a client to guarantee the performance of the client to a third party when certain specified future events have occurred. Fees generated from letters of credit and standby letters of credit are deferred as a component of other liabilities and recognized in noninterest income over the commitment period using the straight-line method, based on the likelihood that the commitment being drawn down will be remote. Letters of credit and standby letters of credit fees are recognized outside of the scope of ASC 606 as it explicitly excludes noninterest income earned from our lending related activities. Investment banking revenue 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 as 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 present expenses gross within other operating expenses. A summary of investment banking revenue by instrument type for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Investment banking revenue: Underwriting fees $ 39 $ 85 $ 248 $ 248 Advisory fees 26 2 39 26 Private placements and other 25 5 48 7 Total investment banking revenue $ 90 $ 92 $ 335 $ 281 Commissions Commissions include commissions received from customers for the execution of agency-based brokerage transactions in listed and over-the-counter equities. The execution of each trade order represents a distinct performance obligation and the transaction price is fixed at the point in time or trade order execution. Trade execution is satisfied at the point in time that the customer has control of the asset and as such, fees are recorded on a trade date basis. Commissions are presented in the "Disaggregation of revenue from contracts with customers" tables below. Other Other noninterest income primarily includes income from fund management fees, gains from conversion of convertible debt options and service revenue. Fund management fees are comprised of fees charged directly to our managed funds of funds and direct venture funds. Fund management fees are based upon the contractual terms of the limited partnership agreements and are generally recognized as earned over the specified contract period, which is generally equal to the life of the individual fund. Fund management fees are calculated as a percentage of committed capital and collected in advance and are received quarterly. Fund management fees for certain of our limited partnership agreements are calculated as a percentage of distributions made by the funds and revenue is recorded only at the time of a distribution event. As distribution events are not predetermined for these certain funds, management fees are considered variable and constrained under ASC 606. Gains from conversion of convertible debt options represent unrealized valuation gains on loan conversion derivative assets, and realized gains from the conversion of debt instruments, convertible into a third party’s common stock upon a triggering event such as an IPO. Gains from conversion of convertible debt options are recognized outside of the scope of ASC 606 as it explicitly excludes noninterest income earned from our derivative-related activities. Other service revenue primarily consists of dividend income on FHLB/FRB stock, correspondent bank rebate income, incentive fees, or performance fees related to carried interest and other fee income. We recognize revenue when our performance obligations are met and record revenues on a daily/monthly, quarterly, semi-annual or annual basis. For event driven revenue sources, we recognize revenue when: (i) persuasive evidence of an arrangement exists, (ii) we have performed the service, provided we have no other remaining obligations to the customer, (iii) the fee is fixed or determinable and (iv) collectability is probable. A summary of other noninterest income by instrument type for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Other noninterest income by instrument type: Fund management fees $ 15 $ 10 $ 51 $ 26 Net gains on revaluation of foreign currency instruments, net of foreign exchange forward contracts (1) (4) (1) 1 (1) Gains from conversion of convertible debt options — 30 — 30 Other service revenue 14 10 45 21 Total other noninterest income $ 25 $ 49 $ 97 $ 76 (1) Represents the net revaluation of client and internal foreign currency denominated financial instruments. We enter into foreign exchange forward contracts to economically reduce our foreign exchange exposure related to client and internal foreign currency denominated financial instruments. Disaggregation of revenue from contracts with customers The following tables present our revenues from contracts with customers disaggregated by revenue source and segment for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, 2021 Global SVB Private SVB Capital (2) SVB Other Items Total (Dollars in millions) Revenue from contracts with customers: Client investment fees $ 20 $ — $ — $ — $ — $ 20 Wealth management and trust fees — 22 — — — 22 Spot contract commissions 59 1 — — — 60 Card interchange fees, gross 52 — — — — 52 Merchant service fees 4 — — — — 4 Deposit service charges 28 — — — 1 29 Investment banking revenue — — — 90 — 90 Commissions — — — 17 — 17 Fund management fees — — 14 1 — 15 Performance fees — — 4 — — 4 Correspondent bank rebates 2 — — — — 2 Total revenue from contracts with customers $ 165 $ 23 $ 18 $ 108 $ 1 $ 315 Revenues outside the scope of ASC 606 (1) 17 2 127 23 188 357 Total noninterest income $ 182 $ 25 $ 145 $ 131 $ 189 $ 672 (1) Amounts are accounted for under separate guidance than ASC 606. (2) Global Commercial Bank’s, SVB Capital’s and SVB Leerink's components of noninterest income are shown net of noncontrolling interests. Noncontrolling interest is included within “Other Items. " Three months ended September 30, 2020 Global SVB Private SVB Capital (2) SVB Other Items Total (Dollars in millions) Revenue from contracts with customers: Client investment fees $ 31 $ 1 $ — $ — $ — $ 32 Spot contract commissions 39 — — — — 39 Card interchange fees, gross 29 — — — — 29 Merchant service fees 4 — — — — 4 Deposit service charges 22 — — — — 22 Investment banking revenue — — — 92 — 92 Commissions — — — 16 — 16 Fund management fees — — 8 2 — 10 Performance fees — — 2 — — 2 Correspondent bank rebates 1 — — — — 1 Total revenue from contracts with customers $ 126 $ 1 $ 10 $ 110 $ — $ 247 Revenues outside the scope of ASC 606 (1) 22 — 50 4 224 300 Total noninterest income $ 148 $ 1 $ 60 $ 114 $ 224 $ 547 (1) Amounts are accounted for under separate guidance than ASC 606. (2) Global Commercial Bank’s, SVB Capital’s and SVB Leerink's components of noninterest income are shown net of noncontrolling interests. Noncontrolling interest is included within “Other Items. " Nine months ended September 30, 2021 Global SVB Private SVB Capital (2) SVB Other Items Total (Dollars in millions) Revenue from contracts with customers: Client investment fees $ 53 $ 2 $ — $ — $ — $ 55 Wealth management and trust fees — 22 — — — 22 Spot contract commissions 174 1 — — — 175 Card interchange fees, gross 141 — — — 1 142 Merchant service fees 12 — — — — 12 Deposit service charges 80 — — — 2 82 Investment banking revenue — — — 335 — 335 Commissions — — — 58 — 58 Fund management fees — — 47 4 — 51 Performance fees — — 12 — — 12 Correspondent bank rebates 4 — — — — 4 Total revenue from contracts with customers $ 464 $ 25 $ 59 $ 397 $ 3 $ 948 Revenues outside the scope of ASC 606 (1) 51 2 330 53 793 1,229 Total noninterest income $ 515 $ 27 $ 389 $ 450 $ 796 $ 2,177 (1) Amounts are accounted for under separate guidance than ASC 606. (2) Global Commercial Bank’s, SVB Capital’s and SVB Leerink's components of noninterest income are shown net of noncontrolling interests. Noncontrolling interest is included within “Other Items. " Nine months ended September 30, 2020 Global SVB Private SVB Capital (2) SVB Other Items Total (Dollars in millions) Revenue from contracts with customers: Client investment fees $ 105 $ 2 $ — $ — $ — $ 107 Spot contract commissions 113 — — — — 113 Card interchange fees, gross 91 — — — 1 92 Merchant service fees 14 — — — — 14 Deposit service charges 67 — — — — 67 Investment banking revenue — — — 281 — 281 Commissions — — — 49 — 49 Fund management fees — — 22 4 — 26 Performance fees — — 4 — — 4 Correspondent bank rebates 4 — — — — 4 Total revenue from contracts with customers $ 394 $ 2 $ 26 $ 334 $ 1 $ 757 Revenues outside the scope of ASC 606 (1) 54 — 61 6 340 461 Total noninterest income $ 448 $ 2 $ 87 $ 340 $ 341 $ 1,218 (1) Amounts are accounted for under separate guidance than ASC 606. (2) Global Commercial Bank’s, SVB Capital’s and SVB Leerink's components of noninterest income are shown net of noncontrolling interests. Noncontrolling interest is included within “Other Items. " The timing of revenue recognition may differ from the timing of cash settlements or invoicing to customers. We record a receivable when revenue is recognized prior to invoicing, and unearned revenue when revenue is recognized subsequent to receipt of consideration. These assets and liabilities are reported on the consolidated balance sheets on a contract-by-contract basis at the end of each reporting period. During the three and nine months ended September 30, 2021 and 2020, changes in our contract assets, contract liabilities and receivables were not material. Additionally, revenues recognized during the three and nine months ended September 30, 2021 and 2020 that were included in the corresponding contract liability balance at the beginning of the periods were not material.

Segment Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting We have four reportable segments for management reporting purposes: Global Commercial Bank, SVB Private Bank, SVB Capital and SVB Leerink. The results of our reportable and 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 FTP, and interest paid on deposits, net of FTP. Accordingly, these segments are reported using net interest income, net of FTP. FTP is an internal measurement framework designed to assess the financial impact of a financial institution’s sources and uses of funds. It is the mechanism by which a funding credit is given for deposits raised, and a funding charge is made for funded loans. FTP is calculated at an instrument level based on account characteristics. We also evaluate performance based on provision for credit losses, noninterest income and noninterest expense, which are presented as components of segment operating profit or loss. In calculating each operating segment’s noninterest expense, we consider the direct costs incurred by the operating segment as well as certain allocated direct costs. As part of this review, we allocate certain corporate overhead costs to a corporate account. We do not allocate income tax expense or the provisions for unfunded credit commitments or HTM securities (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 reportable segments for which we report our financial information: • Global Commercial Bank is comprised of results from the following operating segments: ◦ Our Commercial Bank products and services are provided by the Bank and its subsidiaries to commercial clients in key innovation markets. The Bank provides solutions to the financial needs of commercial clients through credit, treasury management, foreign exchange, trade finance, and other services. In addition, the Bank and its subsidiaries offer a variety of investment services and solutions to its clients that enable them to effectively manage their assets. ◦ Our Global Fund Banking 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. • SVB Private Bank is the private banking division of the Bank, which now includes the financial results of Boston Private effective July 1, 2021. SVB Private Bank 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 as well as high net worth clients. We offer a customized suite of private banking services, including mortgages, home equity lines of credit, restricted and private stock loans, capital call lines of credit and other secured and unsecured lending products, as well as planning-based financial strategies, wealth management, family office, financial planning, tax planning and trust services. In addition, we provide real estate secured loans to eligible employees through our EHOP. • SVB Capital is the funds management business of SVB Financial Group, which focuses primarily on venture capital investments. SVB Capital manages funds (primarily venture capital funds) on behalf of third-party limited partners and, on a more limited basis, SVB Financial Group. The SVB Capital family of funds is comprised of direct venture funds that invest in companies, funds of funds that invest in other venture capital funds, investments in certain debt funds in which we are a strategic investor and WestRiver Group's debt fund business. 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 following table presents a summary of financial results of our reportable segments along with a reconciliation to our consolidated interim results. Our reportable segment information for the three and nine months ended September 30, 2021 and 2020 is as follows: (Dollars in millions) Global SVB Private SVB Capital (1) SVB Other Items (2) Total Three months ended September 30, 2021 Net interest income $ 774 $ 66 $ — $ — $ 12 $ 852 (Provision for) reduction of credit losses 29 (20) — — (30) (21) Noninterest income 182 25 145 131 189 672 Noninterest expense (3) (339) (90) (15) (142) (293) (879) Income (loss) before income tax expense (4) $ 646 $ (19) $ 130 $ (11) $ (122) $ 624 Total average loans, amortized cost $ 45,798 $ 12,506 $ — $ — $ 987 $ 59,291 Total average assets (5) (6) 152,364 14,918 730 837 13,841 182,690 Total average deposits 149,160 13,150 — — 1,082 163,392 Three months ended September 30, 2020 Net interest income (loss) $ 513 $ 19 $ — $ — $ (4) $ 528 Reduction (provision for) credit losses 38 15 — — (1) 52 Noninterest income 148 1 60 114 224 547 Noninterest expense (3) (258) (12) (11) (78) (132) (491) Income before income tax expense (4) $ 441 $ 23 $ 49 $ 36 $ 87 $ 636 Total average loans, amortized cost $ 30,764 $ 4,263 $ — $ — $ 2,292 $ 37,319 Total average assets (5) (6) 77,803 4,297 414 605 5,229 88,348 Total average deposits 74,826 2,164 — — 690 77,680 Nine months ended September 30, 2021 Net interest income $ 2,108 $ 122 $ — $ — $ 10 $ 2,240 Provision for credit losses (27) (16) — — (32) (75) Noninterest income 515 27 389 450 796 2,177 Noninterest expense (3) (919) (118) (48) (376) (707) (2,168) Income before income tax expense (4) $ 1,677 $ 15 $ 341 $ 74 $ 67 $ 2,174 Total average loans, amortized cost $ 42,628 $ 7,573 $ — $ — $ 1,642 $ 51,843 Total average assets (5) (6) 131,218 8,418 641 778 11,897 152,952 Total average deposits 128,272 6,842 — — 999 136,113 Nine months ended September 30, 2020 Net interest income $ 1,462 $ 53 $ — $ — $ 50 $ 1,565 Provision for credit losses (200) (44) — — (14) (258) Noninterest income 448 2 87 340 341 1,218 Noninterest expense (3) (725) (33) (28) (248) (336) (1,370) Income (loss) before income tax expense (4) $ 985 $ (22) $ 59 $ 92 $ 41 1,155 Total average loans, amortized cost $ 30,127 $ 4,053 $ — $ — $ 1,656 $ 35,836 Total average assets (5) (6) 69,213 4,088 430 515 5,515 79,761 Total average deposits 66,408 2,069 — — 689 69,166 (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 reportable segments to the consolidated financial statements prepared in conformity with GAAP. Net interest income consists primarily of interest earned from our fixed income investment portfolio, net of FTP. Noninterest income consists primarily of gains or losses on equity warrant assets, gains or losses on the sale of AFS securities and gains or losses on equity securities from exercised warrant assets. Noninterest expense consists primarily of expenses associated with corporate support functions such as finance, human resources, marketing, legal and other expenses. (3) The Global Commercial Bank segment includes direct depreciation and amortization of $10 million and $6 million for the three months ended September 30, 2021 and 2020, respectively, and $25 million and $18 million for the nine months ended September 30, 2021 and 2020, 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 and Private Bank is goodwill of $138 million and $201 million, respectively, for both the three and nine months ended September 30, 2021. Included in the total average assets for SVB Leerink is goodwill of $138 million for both the three and nine months ended September 30, 2020.

Off-Balance Sheet Arrangements,

Off-Balance Sheet Arrangements, Guarantees and Other Commitments	9 Months Ended
	Sep. 30, 2021
Disclosure Off Balance Sheet Arrangements Guarantees And Other Commitments Additional Information [Abstract]
Off-Balance Sheet Arrangements, Guarantees and Other Commitments	Off-Balance Sheet Arrangements, Guarantees and Other Commitments In the normal course of business, we use financial instruments with off-balance sheet risk to meet the financing needs of our customers. These financial instruments include commitments to extend credit, commercial and standby letters of credit and commitments to invest in venture capital and private equity fund investments. These instruments involve, to varying degrees, elements of credit risk. Credit risk is defined as the possibility of sustaining a loss because other parties to the financial instrument fail to perform in accordance with the terms of the contract. Commitments to Extend Credit The following table summarizes information related to our commitments to extend credit at September 30, 2021 and December 31, 2020: (Dollars in millions) September 30, 2021 December 31, 2020 Loan commitments available for funding: (1) $ 36,808 $ 28,975 Commercial and standby letters of credit (2) 3,451 3,007 Total unfunded credit commitments $ 40,259 $ 31,982 Allowance for unfunded credit commitments (3) 149 121 (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) Our allowance for credit losses for unfunded credit commitments includes an allowance for both our unfunded loan commitments and our letters of credit. Commercial and Standby Letters of Credit The table below summarizes our commercial and standby letters of credit at September 30, 2021. 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 millions) Expires in One Expires After Total Amount Maximum Amount Financial standby letters of credit $ 3,146 $ 107 $ 3,253 $ 3,253 Performance standby letters of credit 116 21 137 137 Commercial letters of credit 27 34 61 61 Total $ 3,289 $ 162 $ 3,451 $ 3,451 Deferred fees related to financial and performance standby letters of credit were $19 million at September 30, 2021 and $17 million at December 31, 2020. At September 30, 2021, collateral in the form of cash of $2.1 billion was available to us to reimburse losses, if any, under financial and performance standby letters of credit. Commitments to Invest in Venture Capital and Private Equity Funds We make commitments to invest in venture capital and private equity funds, which generally make investments in privately-held companies. Commitments to invest in these funds are generally made for a 10-year period from the inception of the fund. Although the limited partnership agreements governing these investments typically do not restrict the general partners from calling 100% of committed capital in one year, it is customary for these funds to call most of the capital commitments over 5 to 7 years, and in certain cases, the funds may not call 100% of committed capital. The actual timing of future cash requirements to fund these commitments is generally dependent upon the investment cycle, overall market conditions, and the nature and type of industry in which the privately held companies operate. The following table details our total capital commitments, unfunded capital commitments, and our ownership percentage in each fund at September 30, 2021: (Dollars in millions) SVBFG Capital Commitments SVBFG Unfunded SVBFG Ownership CP II, LP (1) $ 1 $ — 5.1 % Capital Preferred Return Fund, LP 13 — 20.0 Growth Partners, LP 25 1 33.0 Strategic Investors Fund, LP 15 1 12.6 Strategic Investors Fund II, LP 15 1 8.6 Strategic Investors Fund III, LP 15 1 5.9 Strategic Investors Fund IV, LP 12 2 5.0 Strategic Investors Fund V funds 1 — Various Other venture capital and private equity fund investments (equity method accounting) 11 3 Various Debt funds (equity method accounting) 59 — Various Other fund investments (2) 257 6 Various Total $ 424 $ 15 (1) Our ownership includes direct ownership of 1.3 percent and indirect ownership interest of 3.8 percent through our investment in Strategic Investors Fund II, LP. (2) Represents commitments to 159 funds (primarily venture capital funds) where our ownership interest is generally less than five percent of the voting interests of each such fund. At September 30, 2021 we had $3 million of remaining unfunded commitments to venture capital and private equity funds by our consolidated managed funds of funds (including our interest and the noncontrolling interests) at September 30, 2021.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We are subject to income tax and non-income based taxes by the U.S. federal tax authorities as well as various state and foreign tax authorities. We have identified the U.S. federal and California state jurisdictions as major tax filings. Our U.S. federal tax returns remain open to full examination for 2017 and subsequent tax years. Our California tax returns remain open to full examination for 2016 and subsequent tax years. At September 30, 2021, our unrecognized tax benefit was $32 million, the recognition of which would reduce our income tax expense by $26 million. We do not expect that our unrecognized tax benefit will materially change in the next 12 months. We recognize interest and penalties related to income tax matters as part of income before income taxes. Interest and penalties were not material for the three and nine months ended September 30, 2021.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments Fair Value Measurements Our AFS securities, derivative instruments and certain non-marketable and other equity securities are financial instruments recorded at fair value on a recurring basis. We make estimates regarding valuation of assets and liabilities measured at fair value in preparing our interim consolidated financial statements. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (the “exit price”) in an orderly transaction between market participants at the measurement date. There is a three-level hierarchy for disclosure of assets and liabilities recorded at fair value. The classification of assets and liabilities within the hierarchy is based on whether the inputs to the valuation methodology used for measurement are observable or unobservable and on the significance of those inputs in the fair value measurement. Observable inputs reflect market-derived or market-based information obtained from independent sources, while unobservable inputs reflect our estimates about market data and views of market participants. The three levels for measuring fair value are based on the reliability of inputs and are as follows: Level 1 Fair value measurements based on quoted prices in active markets for identical assets or liabilities that we have the ability to access. Since valuations are based on quoted prices that are readily and regularly available in an active market, valuation of these instruments does not entail a significant degree of judgment. Assets utilizing Level 1 inputs include U.S. Treasury securities, foreign government debt securities, exchange-traded equity securities, certain marketable securities accounted for under fair value accounting, and assets and liabilities related to the deferred compensation plan assumed during the merger with Boston Private. 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 AFS securities are provided by independent pricing service providers who have experience in valuing these securities and by comparison to and/or average of quoted market prices obtained from independent brokers. We perform a monthly analysis on the values received from third parties to ensure that the prices represent a reasonable estimate of the fair value. The procedures include, but are not limited to, initial and ongoing review of third-party pricing methodologies, review of pricing trends and monitoring of trading volumes. Additional corroboration, such as obtaining a non-binding price from a broker, may be obtained depending on the frequency of trades of the security and the level of liquidity or depth of the market. We ensure prices received from independent brokers represent a reasonable estimate of the fair value through the use of observable market inputs including comparable trades, yield curve, spreads and, when available, market indices. As a result of this analysis, if the Company determines that there is a more appropriate fair value based upon the available market data, the price received from the third party is adjusted accordingly. Below is a summary of the significant inputs used for each class of Level 2 assets and liabilities: U.S. agency debentures: Fair value measurements of U.S. agency debentures are based on the characteristics specific to bonds held, such as issuer name, issuance date, coupon rate, maturity date and any applicable issuer call option features. Valuations are based on market spreads relative to similar term benchmark market interest rates, generally U.S. Treasury securities. Agency-issued MBS: Agency-issued MBS 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 CMO: Agency-issued CMO 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 CMBS: Fair value measurements of these securities are based on spreads to benchmark market interest rates (usually U.S. Treasury rates or rates observable in the swaps market), prepayment speeds, loan default rate assumptions and loan loss severity assumptions on underlying loans. Foreign exchange forward and option contract assets and liabilities: Fair value measurements of these assets and liabilities are priced based on spot and forward foreign currency rates and option volatility assumptions. Interest rate derivative and interest rate swap assets and liabilities: Fair value measurements of interest rate derivatives and interest rate swaps are priced considering the coupon rate of the fixed leg of the contract and the variable coupon rate on the floating leg of the contract. Valuation is based on both spot and forward rates on the swap yield curve and the credit worthiness of the contract counterparty. Other equity securities: Fair value measurements of equity securities of public companies are priced based on quoted market prices less a discount if the securities are subject to certain sales restrictions. Certain sales restriction discounts generally range from 10 percent to 20 percent depending on the duration of the sale restrictions which typically range from three Equity warrant assets (public portfolio): Fair value measurements of equity warrant assets of publicly-traded portfolio companies are valued based on the Black-Scholes option pricing model. The model uses the price of publicly-traded companies (underlying stock price), stated strike prices, warrant expiration dates, the risk-free interest rate and market-observable option volatility assumptions. Level 3 The fair value measurement is derived from valuation techniques that use significant assumptions not observable in the market. These unobservable assumptions reflect our own estimates of assumptions we believe market participants would use in pricing the asset. The valuation techniques are consistent with the market approach, income approach and/or the cost approach used to measure fair value. Below is a summary of the valuation techniques used for each class of Level 3 assets: Venture capital and private equity fund investments not measured at net asset value: Fair value measurements are based on consideration of a range of factors including, but not limited to, the price at which the investment was acquired, the term and nature of the investment, local market conditions, values for comparable securities, and as it relates to the private company, the current and projected operating performance, exit strategies and financing transactions subsequent to the acquisition of the investment. The significant unobservable inputs used in the fair value measurement include the information about each portfolio company, including actual and forecasted results, cash position, recent or planned transactions and market comparable companies. Significant changes to any one of these inputs in isolation could result in a significant change in the fair value measurement; however, we generally consider all factors available through ongoing communication with the portfolio companies and venture capital fund managers to determine whether there are changes to the portfolio company or the environment that indicate a change in the fair value measurement. Equity warrant assets (public portfolio): Fair value measurements of equity warrant assets of publicly-traded portfolio companies are valued based on the Black-Scholes option pricing model. The model uses the price of publicly-traded companies (underlying stock price), stated strike prices, warrant expiration dates, the risk-free interest rate and market-observable option volatility assumptions. Modeled asset values are further adjusted by applying a discount of up to 20 percent for certain warrants that have certain sales restrictions or other features that indicate a discount to fair value is warranted. As sale restrictions are lifted, discounts are adjusted downward to zero once all restrictions expire or are removed. Equity warrant assets (private portfolio): Fair value measurements of equity warrant assets of private portfolio companies are priced based on a Black-Scholes option pricing model to estimate the asset value by using stated strike prices, option expiration dates, risk-free interest rates and option volatility assumptions. Option volatility assumptions used in the Black-Scholes model are based on public market indices whose members operate in similar industries as companies in our private company portfolio. Option expiration dates are modified to account for estimates to actual life relative to stated expiration. Overall model asset values are further adjusted for a general lack of liquidity due to the private nature of the associated underlying company. There is a direct correlation between changes in the volatility and remaining life assumptions in isolation and the fair value measurement while there is an inverse correlation between changes in the liquidity discount assumption and the fair value measurement. The following fair value hierarchy table presents information about our assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2021: (Dollars in millions) Level 1 Level 2 Level 3 Balance at September 30, 2021 Assets: AFS securities: U.S. Treasury securities $ 9,277 $ — $ — $ 9,277 U.S. agency debentures — 208 — 208 Foreign government debt securities 15 — — 15 Residential MBS: Agency-issued MBS — 10,784 — 10,784 Agency-issued CMO — fixed rate — 1,138 — 1,138 Agency-issued CMBS — 1,562 — 1,562 Total AFS securities 9,292 13,692 — 22,984 Non-marketable and other equity securities (fair value accounting): Non-marketable securities: Venture capital and private equity fund investments measured at net asset value — — — 362 Other equity securities in public companies 43 115 — 158 Total non-marketable and other equity securities (fair value accounting) 43 115 — 520 Other assets: Foreign exchange forward, swap and option contracts — 185 — 185 Equity warrant assets — 9 265 274 Interest rate swaps — 14 — 14 Client interest rate derivatives — 115 — 115 Other assets 8 — — 8 Total assets $ 9,343 $ 14,130 $ 265 $ 24,100 Liabilities: Foreign exchange forward, swap and option contracts $ — $ 158 $ — $ 158 Client interest rate derivatives — 116 — 116 Other liabilities 8 — — 8 Total liabilities $ 8 $ 274 $ — $ 282 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, 2020: (Dollars in millions) Level 1 Level 2 Level 3 Balance at December 31, 2020 Assets: AFS securities: U.S. Treasury securities $ 4,470 $ — $ — $ 4,470 U.S. agency debentures — 237 — 237 Foreign government debt securities 24 — — 24 Residential MBS: Agency-issued MBS — 13,503 — 13,503 Agency-issued CMO—fixed rate — 8,107 — 8,107 Agency-issued CMBS — 4,572 — 4,572 Total AFS securities 4,494 26,419 — 30,913 Non-marketable and other equity securities (fair value accounting): Non-marketable securities: Venture capital and private equity fund investments measured at net asset value — — — 274 Other equity securities in public companies 43 238 — 281 Total non-marketable and other equity securities (fair value accounting) 43 238 — 555 Other assets: Foreign exchange forward and option contracts — 217 — 217 Equity warrant assets — 11 192 203 Client interest rate derivatives — 68 — 68 Total assets $ 4,537 $ 26,953 $ 192 $ 31,956 Liabilities: Foreign exchange forward and option contracts $ — $ 210 $ — $ 210 Client interest rate derivatives — 27 — 27 Total liabilities $ — $ 237 $ — $ 237 The following table presents additional information about Level 3 assets measured at fair value on a recurring basis for the three and nine months ended September 30, 2021 and 2020: (Dollars in millions) Beginning Balance Total Net Gains Included in Net Income (1) Sales/Exits Issuances Transfers Out of Level 3 Ending Balance Three months ended September 30, 2021 Equity warrant assets $ 257 $ 149 $ (146) $ 6 $ (1) $ 265 Three months ended September 30, 2020 Equity warrant assets 165 53 (29) 5 (1) 193 Nine months ended September 30, 2021 Equity warrant assets 192 490 (431) 18 (4) 265 Nine months ended September 30, 2020 Equity warrant assets 161 91 (74) 16 (1) 193 (1) Realized and unrealized gains (losses) are recorded in the line item “Gains on equity warrant assets, net," a component of noninterest income. The following table presents the amount of net unrealized gains and losses included in earnings attributable to Level 3 assets still held at September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Other assets: Equity warrant assets (1) $ 21 $ 26 $ 113 $ 33 Total unrealized gains, net $ 21 $ 26 $ 113 $ 33 (1) Unrealized gains and losses are recorded in the line item “Gains on equity warrant assets, net, " a component of noninterest income. The extent to which any unrealized gains or losses will become realized is subject to a variety of factors, including, among other things, the expiration of current sales restrictions to which these securities are subject, the actual sales of securities and the timing of such actual sales. The following table presents quantitative information about the significant unobservable inputs used for certain of our Level 3 fair value measurements at September 30, 2021 and December 31, 2020. 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 millions) Fair value Valuation Technique Significant Unobservable Inputs Input Range Weighted September 30, 2021: Equity warrant assets (public portfolio) $ 4 Black-Scholes option pricing model Volatility 28.2% - 56.9% 50.4 % Risk-Free interest rate 0.04- 1.5 1.2 Sales restrictions discount (1) 10.0 - 20.0 16.7 Equity warrant assets (private portfolio) 261 Black-Scholes option pricing model Volatility 25.8 - 56.9 43.9 Risk-Free interest rate 0.04 - 1.16 0.4 Marketability discount (2) 20.8 20.8 Remaining life assumption (3) 40.0 40.0 December 31, 2020: Equity warrant assets (public portfolio) 1 Black-Scholes option pricing model Volatility 46.0% - 56.8% 49.1 % Risk-Free interest rate 0.3- 0.9 0.6 Sales restrictions discount (1) 10.0 - 20.0 10.2 Equity warrant assets (private portfolio) 191 Black-Scholes option pricing model Volatility 24.4 - 56.8 43.2 Risk-Free interest rate 0.01 - 0.52 0.1 Marketability discount (2) 20.6 20.6 Remaining life assumption (3) 40.0 40.0 (1) 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 (2) 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. (3) We adjust the contractual remaining term of private company warrants based on our estimate of the actual remaining life, which we determine by utilizing historical data on terminations and exercises. At September 30, 2021, the weighted average contractual remaining term was 6.6 years, compared to our estimated remaining life of 2.6 years. On a quarterly basis, a sensitivity analysis is performed on our remaining life assumption. For the three and nine months ended September 30, 2021 and 2020, we did not have any transfers between Level 3 and Level 1. All transfers from Level 3 to Level 2 for the three and nine months ended September 30, 2021 and 2020 were due to the transfer of equity warrant assets from our private portfolio to our public portfolio (see our Level 3 reconciliation above). Financial Instruments not Carried at Fair Value FASB guidance over financial instruments requires that we disclose estimated fair values for our financial instruments not carried at fair value. The following fair value hierarchy table presents the estimated fair values of our financial instruments that are not carried at fair value at September 30, 2021 and December 31, 2020: Estimated Fair Value (Dollars in millions) Carrying Amount Total Level 1 Level 2 Level 3 September 30, 2021: Financial assets: Cash and cash equivalents $ 18,940 $ 18,940 $ 18,940 $ — $ — HTM securities 82,365 81,995 — 81,995 — Non-marketable securities not measured at net asset value 350 350 — — 350 Non-marketable securities measured at net asset value 692 692 — — — Net loans 61,089 62,489 — — 62,489 FHLB and Federal Reserve Bank stock 107 107 — — 107 Financial liabilities: Short-term borrowings 97 97 — 97 — Non-maturity deposits (1) 169,833 169,833 169,833 — — Time deposits 1,349 1,350 — 1,350 — 3.50% Senior Notes 349 376 — 376 — 3.125% Senior Notes 496 535 — 535 — 1.80% Senior Notes 495 481 — 481 — 2.10% Senior Notes 496 505 — 505 — Junior subordinated debentures 90 86 — 86 — Off-balance sheet financial assets: Commitments to extend credit — 45 — — 45 December 31, 2020: Financial assets: Cash and cash equivalents $ 17,675 $ 17,675 $ 17,675 $ — $ — HTM securities 16,592 17,217 — 17,217 — Non-marketable securities not measured at net asset value 241 241 — — 241 Non-marketable securities measured at net asset value 390 390 — — — Net loans 44,734 45,324 — — 45,324 FHLB and Federal Reserve Bank stock 61 61 — — 61 Financial liabilities: Short-term borrowings 21 21 — 21 — Non-maturity deposits (1) 101,294 101,294 101,294 — — Time deposits 688 502 — 502 — 3.50% Senior Notes 349 383 — 383 — 3.125% Senior Notes 495 564 — 564 — Off-balance sheet financial assets: Commitments to extend credit — 37 — — 37 (1) Includes noninterest-bearing demand deposits, interest-bearing checking accounts, money market accounts and interest-bearing sweep deposits. Investments in Entities that Calculate Net Asset Value Per Share FASB guidance over certain fund investments requires that we disclose the fair value of funds, significant investment strategies of the investees, redemption features of the investees, restrictions on the ability to sell investments, estimate of the period of time over which the underlying assets are expected to be liquidated by the investee, and unfunded commitments related to the investments. Our investments in debt funds and venture capital and private equity fund investments generally cannot be redeemed. Alternatively, we expect distributions, if any, to be received primarily through IPO and M&A activity of the underlying assets of the fund. Subject to applicable requirements under the Volcker Rule, we do not have any plans to sell any of these fund investments. If we decide to sell these investments in the future, the investee fund’s management must approve of the buyer before the sale of the investments can be completed. The fair values of the fund investments have been estimated using the net asset value per share of the investments, adjusted for any differences between our measurement date and the date of the fund investment’s net asset value by using the most recently available financial information from the investee general partner, for example June 30 th for our September 30 th consolidated financial statements, adjusted for any contributions paid, distributions received from the investment, and significant fund transactions or market events during the reporting period. The following table is a summary of the estimated fair values of these investments and remaining unfunded commitments for each major category of these investments as of September 30, 2021: (Dollars in millions) Carrying Amount Fair Value Unfunded Commitments Non-marketable securities (fair value accounting): Venture capital and private equity fund investments (1) $ 361 $ 361 $ 9 Non-marketable securities (equity method accounting): Venture capital and private equity fund investments (2) 656 656 7 Debt funds (2) 5 5 — Other investments (2) 35 35 1 Total $ 1,057 $ 1,057 $ 17 (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 $102 million and $2 million, respectively, attributable to noncontrolling interests. It is estimated that we will receive distributions from the fund investments over the next 10 to 13 years, depending on the age of the funds and any potential extensions of terms of the funds. (2) Venture capital and private equity fund investments, debt funds, and other fund investments within non-marketable securities (equity method accounting) include funds that invest in or lend money to primarily U.S. and global technology and life science/healthcare companies. It is estimated that we will receive distributions from the funds over the next 5 to 8 years, depending on the age of the funds and any potential extensions of the terms of the funds.

Legal Matters

Legal Matters	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Legal Matters	Legal Matters Certain lawsuits and claims arising in the ordinary course of business have been filed or are pending against us and/or our affiliates, and we may from time to time be involved in other legal or regulatory proceedings. In accordance with applicable accounting guidance, we establish accruals for all such matters, including expected settlements, when we believe it is probable that a loss has been incurred and the amount of the loss is reasonably estimable. When a loss contingency is not both probable and estimable, we do not establish an accrual. Any such loss estimates are inherently uncertain, based on currently available information and are subject to management’s judgment and various assumptions. Due to the inherent subjectivity of these estimates and unpredictability of outcomes of legal proceedings, any amounts accrued may not represent the ultimate resolution of such matters. To the extent we believe any potential loss relating to such matters may have a material impact on our liquidity, consolidated financial position, results of operations, and/or our business as a whole and is reasonably possible but not probable, we aim to disclose information relating to such potential loss. We also aim to disclose information relating to any material potential loss that is probable but not reasonably estimable. In such cases, where reasonably practicable, we aim to provide an estimate of loss or range of potential loss. No disclosures are generally made for any loss contingencies that are deemed to be remote. Based upon information available to us, our review of lawsuits and claims filed or pending against us to date and consultation with our outside legal counsel, we have not recognized a material accrual liability for any such matters, nor do we currently expect that these matters will result in a material liability to the Company. However, the outcome of litigation and other legal and regulatory matters is inherently uncertain, and it is possible that one or more of such matters currently pending or threatened could have an unanticipated material adverse effect on our liquidity, consolidated financial position, results of operations, and/or our business as a whole, in the future.

Related Parties

Related Parties	9 Months Ended
	Sep. 30, 2021
Related Party Transactions [Abstract]
Related Parties	Related PartiesWe have no material related party transactions requiring disclosure. In the ordinary course of business, the Bank may extend credit to related parties, including executive officers, directors, principal shareholders and their related interests. Additionally, we provide real estate secured loans to eligible employees through our EHOP. For additional details, see Note 19 — “Employee Compensation and Benefit Plans" under Part II, Item 8 of our 2020 Form 10-K.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Series D and Series E Preferred Stock and Senior Notes Offerings On October 28, 2021, the Company issued depositary shares each representing a 1/100th ownership interest in 1,000,000 shares of Series D Preferred Stock with a $0.001 par value and a liquidation preference of $100,000 per share, or $1,000 per depositary share. The Series D Preferred Stock is perpetual and has no stated maturity. Dividends, if approved and declared by the Board of Directors, are payable quarterly, in arrears, at a rate per annum equal to (i) 4.250 percent from the original issue date to, but excluding, November 15, 2026, and (ii) for the November 15, 2026 dividend date and during each subsequent five-year period, the five-year treasury rate (calculated three On October 28, 2021, the company also issued depositary shares each representing a 1/100th ownership interest in 600,000 shares of Series E Preferred Stock with a $0.001 par value and a liquidation preference of $100,000 per share, or $1,000 per depositary share. The Series E Preferred Stock is perpetual and has no stated maturity. Dividends, if approved and declared by the Board of Directors, are payable quarterly, in arrears, at a rate per annum equal to (i) 4.700 percent from the original issue date to, but excluding, November 15, 2031, and (ii) for the November 15, 2031 dividend date and during each subsequent ten-year period, the ten-year treasury rate (calculated three Concurrently with the offering of the Series D and Series E Preferred Stock, SVB Financial Group issued $650 million of 1.800% Senior Notes due in October 2026, with interest payments starting April 28, 2022, and payable every April 28 th and October 28 th

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	SVB Financial Group is a diversified financial services company, as well as a bank holding company and a financial holding company. SVB Financial was incorporated in the state of Delaware in March 1999. Through our various subsidiaries and divisions, we offer a diverse set of banking and financial products and services to support our clients of all sizes and stages throughout their life cycles. In these notes to our unaudited interim consolidated financial statements, when we refer to “SVB Financial Group,” “SVBFG," the “Company,” “we,” “our,” “us” or use similar words, we mean SVB Financial Group and all of its subsidiaries collectively, including Silicon Valley Bank (the “Bank”), unless the context requires otherwise. When we refer to “SVB Financial” or the “Parent” we are referring only to the parent company, SVB Financial Group (not including subsidiaries).The accompanying unaudited interim consolidated financial statements reflect all adjustments of a normal and recurring nature that are, in the opinion of management, necessary to fairly present our financial position, results of operations and cash flows in accordance with GAAP. Such unaudited interim consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the SEC. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. The results of operations for the three and nine months ended September 30, 2021 are not necessarily indicative of results to be expected for any future periods. These unaudited interim consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2020 (“2020 Form 10-K”).
Use of Estimates	The preparation of unaudited interim consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Estimates may change as new information is obtained. Among the more significant estimates are those that relate to: 1) ACL for loans and for unfunded credit commitments, 2) valuation of non-marketable and other equity securities, 3) valuation of equity warrant assets, 4) goodwill, intangible assets and other purchase accounting related adjustments, and 5) income taxes.
Principles of Consolidation and Presentation	Our unaudited interim consolidated financial statements include the accounts of SVB Financial Group and consolidated entities. All significant intercompany accounts and transactions with consolidated entities have been eliminated. For a further description of our accounting policies regarding consolidation refer to Consolidated Financial Statements and Supplementary Data
Reclassifications	Certain prior period amounts have been reclassified to conform to current period presentation. Changes include the presentation of our loan disclosures as a result of the acquisition of Boston Private as mentioned below, our table summarizing the activity relating to our ACL for loans and the consolidation of certain line items in our Consolidated Statement of Stockholders' Equity (unaudited).
Allowance for Credit Losses: Loan Portfolio Segments and Classes of Financing Receivables	Upon completing the acquisition of Boston Private, we evaluated the impact of the acquired loan portfolio on our existing portfolio segments and classes of financing receivables, which we historically have called "risk-based segments." We have modified both levels of disaggregation to accommodate Boston Private loans. The following provides additional information regarding our revised eight portfolio segments and the additional disaggregation of our eleven classes of financing receivables: • Global Fund Banking (segment and class) – The vast majority of our Global Fund Banking ("GFB") portfolio segment consists of capital call lines of credit, the repayment of which is dependent on the payment of capital calls by the underlying limited partner investors in funds managed by certain private equity and venture capital firms. • Investor Dependent (segment) – Our Investor Dependent loans are made primarily to technology and life science/healthcare companies. These borrowers typically have modest or negative cash flows and rarely have an established record of profitable operations. Repayment of these loans may be dependent upon receipt by borrowers of additional equity financing from venture capital firms or other investors, or in some cases, a successful sale to a third party or an IPO. This portfolio segment is further disaggregated into two classes of financing receivables: ◦ Early-Stage (class) – Our Early-Stage class of financing receivable consists of pre-revenue, development-stage companies and companies that are in the early phases of commercialization, with revenues of up to $5 million. ◦ Growth Stage (class) – Our Growth Stage (Mid/Later Stages) class of financing receivable consists of growth-stage enterprises. We consider companies with revenues between $5 million and $15 million, or pre-revenue clinical-stage biotechnology companies, to be Mid-Stage, and companies with revenues in excess of $15 million to be Later Stage. • Cash Flow Dependent and Innovation Commercial and Industrial ("C&I") (segment) – These loans are made primarily to technology and life science/healthcare companies that are not Investor Dependent, i.e. repayment is not dependent on additional equity financing, a successful sale or an IPO. This portfolio segment consists of two classes of financing receivables: ◦ Cash Flow Dependent – Sponsor-Led Buyout ("SLBO") (class) – Sponsor-Led Buyout loans are typically used to assist a select group of private equity sponsors with the acquisition of businesses, are larger in size, and repayment is generally dependent upon the cash flows of the combined entities. Acquired companies are typically established, later-stage businesses of scale and characterized by reasonable levels of leverage with loan structures that include meaningful financial covenants. The sponsor’s equity contribution is often 50 percent or more of the acquisition price. ◦ Innovation C&I (class) – This class of financing receivable contains other commercial and industrial loans in innovation sectors (i.e. the technology and life science/healthcare industries). These loans are dependent on either the borrower’s cash flows or balance sheet for repayment. Cash flow dependent loans require the borrower to maintain cash flow from operations that is sufficient to service all debt. Borrowers must demonstrate normalized cash flow in excess of all fixed charges associated with operating the business. Balance sheet dependent loans include asset-based loans and are structured to require constant current asset coverage (i.e. cash, cash equivalents, accounts receivable, and, to a much lesser extent, inventory) in an amount that exceeds the outstanding debt. The repayment of these arrangements is dependent on the financial condition, and payment ability, of third parties with whom our clients do business. • Private Bank (segment and class) – Our Private Bank clients are primarily private equity/venture capital professionals and executives in the innovation companies they support as well as high net worth clients acquired from Boston Private. We offer a customized suite of private banking services, including mortgages, home equity lines of credit, restricted and private stock loans, personal capital call lines of credit, lines of credit against liquid assets and other secured and unsecured lending products. In addition, we provide owner occupied commercial mortgages to Private Bank clients and real estate secured loans to eligible employees through our Employee Home Ownership Program. • Commercial Real Estate (CRE) (segment and class) – Commercial real estate loans are generally acquisition financing for commercial properties such as office buildings, retail properties, apartment buildings, and industrial/warehouse space. • Other C&I (segment and class) – These are commercial and industrial loans, including working capital and revolving lines of credit, as well as term loans for equipment and fixed assets. These loans are primarily to clients that are not in the technology and life sciences/healthcare industries. Additionally, this portfolio segment contains commercial tax-exempt loans to not-for-profit private schools, colleges, public charter schools and other not-for-profit organizations. • Premium Wine and Other (segment) – This portfolio segment consists of two classes of financing receivables: ◦ Premium Wine (class) – Our Premium Wine clients primarily consist of wine producers, vineyards and wine industry or hospitality businesses across the Western United States. A large portion of these loans are secured by real estate collateral such as vineyards and wineries. ◦ Other (class) – Our Other class of financing receivable primarily consists of construction and land loans for financing new developments as well as financing for improvements to existing buildings. These also include our community development loans made as part of our responsibilities under the Community Reinvestment Act.
Adoption of New Accounting Standards and Recent Accounting Pronouncements	In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (ASU 2019-12), which is part of the FASB’s initiative to reduce cost and complexity related to accounting for income taxes. ASU 2019-12 eliminates certain exceptions to the general principles of ASC 740, Income Taxes, and simplifies income tax accounting in several areas. We adopted the guidance on January 1, 2021, on a modified retrospective basis. The adoption did not have a material impact on our financial position, results of operations, cash flows or disclosures.

Business Combinations and Ass_2

Business Combinations and Asset Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2021
Business Combination and Asset Acquisition [Abstract]
Schedule of Business Acquisitions, by Acquisition	The following table summarizes the allocation of the purchase price to the net assets of Boston Private as of July 1, 2021: (Dollars in millions) July 1, 2021 Cash paid $ 174 Share-based consideration 1,050 Replacement equity awards 10 Total purchase consideration $ 1,234 Fair value of net assets acquired 1,033 Goodwill $ 201
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 millions) July 1, 2021 Assets acquired: Cash and cash equivalents $ 1,290 Investment securities 1,429 Net loans 7,217 Premises and equipment 39 Intangible assets 104 Right-of-use assets 107 Other assets 284 Total assets acquired $ 10,470 Liabilities assumed: Deposits $ 8,983 Borrowings 132 Lease liabilities 103 Other liabilities 219 Total liabilities assumed $ 9,437 Fair value of net assets acquired $ 1,033
Schedule of Indefinite-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 millions) Estimated Fair Value Weighted Average Estimated Useful Life - in Years Other intangible assets: Customer relationships $ 85 20 Other 19 6 Total other intangible assets $ 104
Schedule of Credit Deteriorated Loans Acquired As Part of Business Combination	Of the $7.2 billion net loans acquired, $1.4 billion exhibited credit deterioration on the date of purchase. The following table provides a summary of these PCD loans at acquisition: (Dollars in millions) July 1, 2021 Par value of PCD loans $ 1,368 PCD ACL at acquisition (22) Non-credit premium on PCD loans 43 Purchase price of PCD loans $ 1,389

Stockholders' Equity and EPS (T

Stockholders' Equity and EPS (Tables)	9 Months Ended
	Sep. 30, 2021
Equity and Earnings Per Share [Abstract]
Reclassification out of Accumulated Other Comprehensive Income	The following table summarizes the items reclassified out of AOCI into the Consolidated Statements of Income (unaudited) for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (Dollars in millions) Income Statement Location 2021 2020 2021 2020 Reclassification adjustment for gains on AFS securities included in net income Gains on investment securities, net $ — $ — $ — $ (61) Related tax expense Income tax expense — — — 17 Reclassification adjustment for gains on cash flow hedges included in net income Net interest income (16) (16) (47) (34) Related tax expense Income tax expense 4 5 13 9 Total reclassification adjustment for gains included in net income, net of tax $ (12) $ (11) $ (34) $ (69)
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 AOCI for the three and nine months ended September 30, 2021 and 2020. Refer to Note 9 — “Derivative Financial Instruments” for additional information regarding the termination of our cash flow hedges during the quarter ended March 31, 2020. Over the next 12 months, we expect that approximately $59 million in AOCI at September 30, 2021, related to unrealized gains will be reclassified out of AOCI and recognized in net income. Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Balance, beginning of period, net of tax $ 107 $ 153 $ 129 $ (2) Net increase in fair value, net of tax — — — 168 Net realized gain reclassified to net income, net of tax (12) (12) (34) (25) Balance, end of period, net of tax $ 95 $ 141 $ 95 $ 141
Reconciliation of Basic EPS to Diluted EPS	The following is a reconciliation of basic EPS to diluted EPS for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (Dollars in millions except per share amounts, shares in thousands) 2021 2020 2021 2020 Numerator: Net income available to common stockholders $ 365 $ 442 $ 1,399 $ 803 Denominator: Weighted average common shares outstanding—basic 57,723 51,773 54,772 51,640 Weighted average effect of dilutive securities: Stock options and ESPP 268 141 278 147 Restricted stock units and awards 530 232 567 163 Weighted average common shares outstanding—diluted 58,521 52,146 55,617 51,950 Earnings per common share: Basic $ 6.33 $ 8.53 $ 25.54 $ 15.55 Diluted 6.24 8.47 25.16 15.46
Schedule of Antidilutive Securities Excluded from Computation of Earnings per Share	The following table summarizes the weighted-average common shares excluded from the diluted EPS calculation due to the antidilutive effect for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (Shares in thousands) 2021 2020 2021 2020 Stock options 56 319 31 269 Restricted stock units — 55 — 83 Total 56 374 31 352
Schedule of Stock by Class	The following table summarizes our preferred stock at September 30, 2021: Series Description Amount outstanding (in millions) Carrying value Shares issued and outstanding Par Value Ownership interest per depositary share Liquidation preference per depositary share 2021 dividends paid per depositary share Series A 5.250% Fixed-Rate Non-Cumulative Perpetual Preferred Stock $ 350 $ 340 350,000 $ 0.001 1/40 th $ 25 $ 0.98 Series B 4.100% Fixed-Rate Non-Cumulative Perpetual Preferred Stock 750 739 7,500 0.001 1/100 th 1,000 21.98 Series C 4.000% Fixed-Rate Non-Cumulative Perpetual Preferred Stock 1,000 985 10,000 0.001 1/100 th 1,000 10.22
Schedule of Stockholders Equity	The following table summarizes the changes in our consolidated equity for the three months ended September 30, 2021 and 2020: Preferred Common Stock Additional Retained Accumulated Total SVBFG Noncontrolling Interests Total (Dollars in millions, except share data) Shares Amount Balance at June 30, 2020 $ 340 51,740,714 $ — $ 1,523 $ 4,842 $ 614 $ 7,319 $ 149 $ 7,468 Common stock issued under employee benefit plans and ESOP, net of restricted stock cancellations — 47,258 — 4 — — 4 — 4 Net income — — — — 446 — 446 28 474 Capital calls and distributions, net — — — — — — — (3) (3) Other comprehensive income, net of tax — — — — — 6 6 — 6 Share-based compensation, net — — — 22 — — 22 — 22 Dividends on preferred stock — — — — (4) — (4) — (4) Balance at September 30, 2020 $ 340 51,787,972 $ — $ 1,549 $ 5,284 $ 620 $ 7,793 $ 174 $ 7,967 Balance at June 30, 2021 $ 2,064 54,530,307 $ — $ 2,755 $ 6,706 $ 142 $ 11,667 $ 300 $ 11,967 Common stock issued under employee benefit plans and ESOP, net of restricted stock cancellations — 32,195 — 2 — — 2 — 2 Issuance of Common Stock — 2,227,000 — 1,245 — — 1,245 — 1,245 Issuance of common stock for the acquisition of Boston Private — 1,887,981 — 1,060 — — 1,060 — 1,060 Net income — — — — 387 — 387 88 475 Capital calls and distributions, net — — — — — — — (19) (19) Other comprehensive income, net of tax — — — — — (77) (77) — (77) Share-based compensation, net — — — 38 — — 38 — 38 Dividends on preferred stock — — — — (22) — (22) — (22) Balance at September 30, 2021 $ 2,064 58,677,483 $ — $ 5,100 $ 7,071 $ 65 $ 14,300 $ 369 $ 14,669

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	9 Months Ended
	Sep. 30, 2021
Investments In Variable Interest Entities [Abstract]
Schedule of Variable Interest Entities	The following table presents the carrying amounts and classification of variable interests in consolidated and unconsolidated VIEs as of September 30, 2021 and December 31, 2020: (Dollars in millions) Consolidated VIEs Unconsolidated VIEs Maximum Exposure to Loss in Unconsolidated VIEs September 30, 2021: Assets: Cash and cash equivalents $ 8 $ — $ — Non-marketable and other equity securities (1) 762 1,216 1,216 Accrued interest receivable and other assets (2) 24 6 — Total assets $ 794 $ 1,222 $ 1,216 Liabilities: Other liabilities (1) 17 471 — Long term debt (2) — 90 — Total liabilities $ 17 $ 561 $ — December 31, 2020: Assets: Cash and cash equivalents $ 15 $ — $ — Non-marketable and other equity securities (1) 422 859 859 Accrued interest receivable and other assets 1 — — Total assets $ 438 $ 859 $ 859 Liabilities: Other liabilities (1) 1 370 — Total liabilities $ 1 $ 370 $ — (1) Included in our unconsolidated non-marketable and other equity securities portfolio at September 30, 2021 and December 31, 2020 are investments in qualified affordable housing projects of $920 million and $616 million, respectively, and related other liabilities consisting of unfunded commitments of $471 million and $370 million, respectively. (2) Included in our unconsolidated accrued interest receivable and other assets at September 30, 2021 are investments in statutory trusts for junior subordinated debt of $6 million and $90 million included in long term debt previously issued by Boston Private and assumed in the acquisition.

Cash and Cash Equivalents (Tabl

Cash and Cash Equivalents (Tables)	9 Months Ended
	Sep. 30, 2021
Cash and Cash Equivalents [Abstract]
Schedule of Cash and Cash Equivalents	The following table details our cash and cash equivalents at September 30, 2021 and December 31, 2020: (Dollars in millions) September 30, 2021 December 31, 2020 Cash and due from banks $ 1,185 $ 723 Interest bearing deposits with the Federal Reserve Bank 12,406 13,700 Interest bearing deposits with other institutions 5,106 3,025 Securities purchased under agreements to resell (1) 216 227 Other short-term investment securities 27 — Total cash and cash equivalents $ 18,940 $ 17,675 (1) At September 30, 2021 and December 31, 2020, securities purchased und er agreements to resell were collateralized by U.S. Treasury securities and U.S. agency securities with aggregate fair value s of $221 million a n d $232 million, respectively. None of these securities were sold or repledged as of September 30, 2021 and December 31, 2020.

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Debt Securities, Available-for-sale	The major components of our AFS investment securities portfolio at September 30, 2021 and December 31, 2020 are as follows: September 30, 2021 (Dollars in millions) Amortized Unrealized Unrealized Carrying AFS securities, at fair value: U.S. Treasury securities $ 9,122 $ 170 $ (15) $ 9,277 U.S. agency debentures 212 — (4) 208 Foreign government debt securities 15 — — 15 Residential MBS: Agency-issued MBS 10,902 69 (187) 10,784 Agency-issued CMO—fixed rate 1,129 11 (2) 1,138 Agency-issued CMBS 1,539 36 (13) 1,562 Total AFS securities $ 22,919 $ 286 $ (221) $ 22,984 December 31, 2020 (Dollars in millions) Amortized Unrealized Unrealized Carrying AFS securities, at fair value: U.S. Treasury securities $ 4,198 $ 272 $ — $ 4,470 U.S. agency debentures 234 4 (1) 237 Foreign government debt securities 24 — — 24 Residential MBS: Agency-issued MBS 13,271 233 (1) 13,503 Agency-issued CMO—fixed rate 8,077 40 (10) 8,107 Agency-issued CMBS 4,441 134 (3) 4,572 Total AFS securities $ 30,245 $ 683 $ (15) $ 30,913
Activity of Available-for-Sale Securities	The following table summarizes sale activity of AFS securities during the three and nine months ended September 30, 2021 and 2020 as recorded in the line item “Gains on investment securities, net," a component of noninterest income: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Sales proceeds $ 168 $ — $ 168 $ 2,654 Net realized gains and losses: Gross realized gains — — — 61 Gross realized losses — — — — Net realized gains $ — $ — $ — $ 61 For the three and nine months ended September 30, 2021 gross realized gains and gross realized losses were below $1 million. For the three months ended September 30, 2020 we
Summary of Unrealized Losses on Available for Sale Securities	The following tables summarize our AFS securities in an unrealized loss position for which an ACL has not been recorded and summarized into categories of less than 12 months, or 12 months or longer, as of September 30, 2021 and December 31, 2020: September 30, 2021 Less than 12 months 12 months or longer (1) Total (Dollars in millions) Fair Value of Unrealized Fair Value of Unrealized Fair Value of Unrealized AFS securities: U.S. Treasury securities $ 5,172 $ (15) $ — $ — $ 5,172 $ (15) U.S. agency debentures 112 (4) — — 112 (4) Residential MBS: Agency-issued MBS 8,376 (187) — — 8,376 (187) Agency-issued CMO —fixed rate 232 (2) — — 232 (2) Agency-issued CMBS 695 (9) 81 (4) 776 (13) Total AFS securities (1) $ 14,587 $ (217) $ 81 $ (4) $ 14,668 $ (221) (1) As of September 30, 2021, we identified a total of 381 investments that were in unrealized loss positions with 2 investments in an unrealized loss position for a period of time greater than 12 months. Based on our analysis of the securities in an unrealized loss position as of September 30, 2021, the decline in value is unrelated to credit loss and is related to changes in market interest rates since purchase and therefore changes in value for securities are included in other comprehensive income. Market valuations and credit loss analyses on assets in the AFS securities portfolio are reviewed and monitored on a quarterly basis. As of September 30, 2021, we do not intend to sell any of our securities in an unrealized loss position prior to recovery of our amortized cost basis, and it is more likely than not that we will not be required to sell any of our securities prior to recovery of our amortized cost basis. None of the investments in our AFS securities portfolio were past due as of September 30, 2021. December 31, 2020 Less than 12 months 12 months or longer Total (Dollars in millions) Fair Value of Unrealized Fair Value of Unrealized Fair Value of Unrealized AFS securities: U.S. Treasury securities (1) $ 60 $ — $ — $ — $ 60 $ — U.S. agency debentures 133 (1) — — 133 (1) Residential MBS: Agency-issued MBS 904 (1) — — 904 (1) Agency-issued CMO—fixed rate 2,199 (10) — — 2,199 (10) Agency-issued CMBS 989 (3) — — 989 (3) Total AFS securities (2) $ 4,285 $ (15) $ — $ — $ 4,285 $ (15) (1) At December 31, 2020, gross unrealized losses totaled less than $1 million for U.S. Treasury AFS securities with a loss duration of less than 12 months. (2) As of December 31, 2020, we identified a total of 93 investments that were in unrealized loss positions, of which no investments are in an unrealized loss position for a period of time greater than 12 months. None of the investments in our AFS securities portfolio were past due as of December 31, 2020.
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 September 30, 2021 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 MBS may differ significantly from their contractual maturities because mortgage borrowers have the right to prepay outstanding loan obligations with or without penalties. MBS 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. September 30, 2021 (Dollars in millions) Total One Year After One After Five After U.S. Treasury securities $ 9,277 $ 40 $ 9,237 $ — $ — U.S. agency debentures 208 91 37 80 — Foreign government debt securities 15 15 — — — Residential MBS: Agency-issued MBS 10,784 — — — 10,784 Agency-issued CMO—fixed rate 1,138 — — — 1,138 Agency-issued CMBS 1,562 — 16 1,546 — Total $ 22,984 $ 146 $ 9,290 $ 1,626 $ 11,922 The following table summarizes the remaining contractual principal maturities on fixed income investment securities classified as HTM as of September 30, 2021. For U.S. agency debentures, the expected maturity is the actual contractual maturity of the notes. Expected remaining maturities for certain U.S. agency debentures may occur earlier than their contractual maturities because the note issuers have the right to call outstanding amounts ahead of their contractual maturity. Expected maturities for MBS may differ significantly from their contractual maturities because mortgage borrowers have the right to prepay outstanding loan obligations with or without penalties. MBS 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; however, we expect to collect substantially all of the recorded investment on these securities. September 30, 2021 Total One Year After One Year to After Five Years to After (Dollars in millions) Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value U.S. agency debentures $ 609 $ 622 $ 1 $ 1 $ 133 $ 137 $ 475 $ 484 $ — $ — Residential MBS: Agency-issued MBS 52,874 52,526 1 2 7 8 407 419 52,459 52,097 Agency-issued CMO—fixed rate 7,410 7,358 — — 7 7 361 368 7,042 6,983 Agency-issued CMO—variable rate 109 110 — — — — — — 109 110 Agency-issued CMBS 14,351 14,289 — — 213 212 534 550 13,604 13,527 Municipal bonds and notes 6,485 6,558 52 52 157 162 973 1,015 5,303 5,329 Corporate bonds 533 532 — — — — 533 532 — — Total $ 82,371 $ 81,995 $ 54 $ 55 $ 517 $ 526 $ 3,283 $ 3,368 $ 78,517 $ 78,046
Held-to-maturity Securities	The components of our HTM investment securities portfolio at September 30, 2021 and December 31, 2020 are as follows: September 30, 2021 (Dollars in millions) Amortized Unrealized Unrealized Fair Value ACL HTM securities, at cost: U.S. agency debentures (1) $ 609 $ 14 $ (1) $ 622 $ — Residential MBS: Agency-issued MBS 52,874 167 (515) 52,526 — Agency-issued CMO—fixed rate 7,410 19 (71) 7,358 — Agency-issued CMO—variable rate 109 1 — 110 — Agency-issued CMBS 14,351 58 (120) 14,289 — Municipal bonds and notes 6,485 151 (78) 6,558 1 Corporate bonds 533 2 (3) 532 5 Total HTM securities $ 82,371 $ 412 $ (788) $ 81,995 $ 6 (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, 2020 (Dollars in millions) Amortized Unrealized Unrealized Fair Value ACL HTM securities, at amortized cost: U.S. agency debentures (1) $ 402 $ 19 $ — $ 421 $ — Residential MBS: Agency-issued MBS 7,740 240 (2) 7,978 — Agency-issued CMO—fixed rate 1,735 23 — 1,758 — Agency-issued CMO—variable rate 137 1 — 138 — Agency-issued CMBS 2,943 124 — 3,067 — Municipal bonds and notes 3,635 221 (1) 3,855 — Total HTM securities $ 16,592 $ 628 $ (3) $ 17,217 $ — (1) Consists of pools of Small Business Investment Company debentures issued and guaranteed by the U.S. Small Business Administration, an independent agency of the United States.
Debt Securities, Held-to-maturity, Credit Quality Indicator	On a quarterly basis, management monitors the credit quality for HTM securities through the use of standard credit ratings. The following table summarizes our amortized cost of HTM securities aggregated by credit quality indicator at September 30, 2021 and December 31, 2020: (Dollars in millions) September 30, 2021 December 31, 2020 Municipal bonds and notes: Aaa $ 3,422 $ 2,070 Aa1 1,883 1,145 Aa2 981 420 Aa3 172 — A1 27 — Total municipal bonds and notes $ 6,485 $ 3,635 Corporate bonds: Aa1 $ 29 $ — Aa2 27 — Aa3 43 — A1 210 — A2 224 — Total corporate bonds $ 533 $ —
Schedule of Nonmarketable and Other Securities	The major components of our non-marketable and other equity securities portfolio at September 30, 2021 and December 31, 2020 are as follows: (Dollars in millions) September 30, 2021 December 31, 2020 Non-marketable and other equity securities: Non-marketable securities (fair value accounting): Consolidated venture capital and private equity fund investments (1) $ 140 $ 89 Unconsolidated venture capital and private equity fund investments (2) 222 185 Other investments without a readily determinable fair value (3) 95 61 Other equity securities in public companies (fair value accounting) (4) 158 281 Non-marketable securities (equity method accounting) (5): Venture capital and private equity fund investments 656 362 Debt funds 5 5 Other investments 289 203 Investments in qualified affordable housing projects, net (6) 920 616 Total non-marketable and other equity securities $ 2,485 $ 1,802 (1) The following table shows the amounts of venture capital and private equity fund investments held by the following consolidated funds and our ownership percentage of each fund at September 30, 2021 and December 31, 2020 (fair value accounting): September 30, 2021 December 31, 2020 (Dollars in millions) Amount Ownership % Amount Ownership % Strategic Investors Fund, LP $ 5 12.6 % $ 5 12.6 % Capital Preferred Return Fund, LP 64 20.0 50 20.0 Growth Partners, LP 71 33.0 34 33.0 Total consolidated venture capital and private equity fund investments $ 140 $ 89 (2) The carrying value represents investments in 153 and 162 funds (primarily venture capital funds) at September 30, 2021 and December 31, 2020, respectively, where our ownership interest is typically less than 5% of the voting interests of each such fund and in which we do not have the ability to exercise significant influence over the partnerships operating activities and financial policies. We carry our unconsolidated venture capital and private equity fund investments at fair value based on the fund investments' net asset values per share as obtained from the general partners of the investments. For each fund investment, we adjust the net asset value per share for differences between our measurement date and the date of the fund investment’s net asset value by using the most recently available financial information from the investee general partner, for example June 30 th for our September 30 th consolidated financial statements, adjusted for any contributions paid, distributions received from the investment, and significant fund transactions or market events during the reporting period. (3) These investments include direct equity investments in private companies. The carrying value is based on the price at which the investment was acquired plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments. We consider a range of factors when adjusting the fair value of these investments, including, but not limited to, the term and nature of the investment, local market conditions, values for comparable securities, current and projected operating performance, exit strategies, financing transactions subsequent to the acquisition of the investment and a discount for certain investments that have lock-up restrictions or other features that indicate a discount to fair value is warranted. The following table shows the changes to the carrying amount of other investments without a readily determinable fair value for the nine months ended September 30, 2021: (Dollars in millions) Nine months ended September 30, 2021 Cumulative Adjustments Measurement alternative: Carrying value at September 30, 2021 $ 95 Carrying value adjustments: Impairment $ — $ (1) Upward changes for observable prices 10 13 Downward changes for observable prices (3) (6) (4) Investments classified as other equity securities (fair value accounting) represent shares held in public companies as a result of exercising public equity warrant assets and direct equity investments in public companies held by our consolidated funds. Changes in equity securities measured at fair value are recognized through net income. (5) The following table shows the carrying value and our ownership percentage of each investment at September 30, 2021 and December 31, 2020 (equity method accounting): September 30, 2021 December 31, 2020 (Dollars in millions) Amount Ownership % Amount Ownership % Venture capital and private equity fund investments: Strategic Investors Fund II, LP $ 3 8.6 % $ 4 8.6 % Strategic Investors Fund III, LP 29 5.9 16 5.9 Strategic Investors Fund IV, LP 38 5.0 25 5.0 Strategic Investors Fund V funds 92 Various 67 Various CP II, LP (i) 1 5.1 8 5.1 Other venture capital and private equity fund investments 493 Various 242 Various Total venture capital and private equity fund investments $ 656 $ 362 Debt funds: Gold Hill Capital 2008, LP (ii) $ 4 15.5 % $ 4 15.5 % Other debt funds 1 Various 1 Various Total debt funds $ 5 $ 5 Other investments: SPD Silicon Valley Bank Co., Ltd. $ 152 50.0 % $ 115 50.0 % Other investments 137 Various 88 Various Total other investments $ 289 $ 203 (i) Our ownership includes direct ownership interest of 1.3 percent and indirect ownership interest of 3.8 percent through our investments in Strategic Investors Fund II, LP. (ii) Our ownership includes direct ownership interest of 11.5 percent in the fund and an indirect interest in the fund through our investment in Gold Hill Capital 2008, LLC of 4.0 percent. (6) The following table presents the balances of our investments in qualified affordable housing projects and related unfunded commitments included as a component of “Other liabilities” on our consolidated balance sheets at September 30, 2021 and December 31, 2020: (Dollars in millions) September 30, 2021 December 31, 2020 Investments in qualified affordable housing projects, net $ 920 $ 616 Other liabilities 471 370 The following table presents other information relating to our investments in qualified affordable housing projects for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Tax credits and other tax benefits recognized $ 9 $ 15 $ 63 $ 47 Amortization expense included in provision for income taxes (i) 17 10 48 32 (i) All investments are amortized using the proportional amortization method and amortization expense is included in the provision for income taxes.
Gain Loss On Investment Securities	The following table presents the net gains and losses on non-marketable and other equity securities for the three and nine months ended September 30, 2021 and 2020 as recorded in the line item “Gains on investment securities, net," a component of noninterest income: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Net gains (losses) on non-marketable and other equity securities: Non-marketable securities (fair value accounting): Consolidated venture capital and private equity fund investments $ 36 $ 9 $ 72 $ 13 Unconsolidated venture capital and private equity fund investments 47 16 79 15 Other investments without a readily determinable fair value (2) — 11 (4) Other equity securities in public companies (fair value accounting) (39) 113 53 119 Non-marketable securities (equity method accounting): Venture capital and private equity fund investments 144 51 438 70 Debt funds — — 2 — Other investments 3 1 6 (3) Total net gains on non-marketable and other equity securities $ 189 $ 190 $ 661 $ 210 Less: realized net gains (losses) on sales of non-marketable and other equity securities (17) 5 110 6 Net gains on non-marketable and other equity securities still held $ 206 $ 185 $ 551 $ 204

Loans, Allowance for Loan Los_2

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments (Tables)	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Loans and Allowance for Loan Losses	The composition of loans at amortized cost basis broken out by class of financing receivable at September 30, 2021 and December 31, 2020 is presented in the following table: (Dollars in millions) September 30, 2021 December 31, 2020 Global fund banking $ 34,120 $ 25,543 Investor dependent: Early stage 1,550 1,486 Growth stage 3,827 3,486 Total investor dependent 5,377 4,972 Cash flow dependent - SLBO 1,895 1,989 Innovation C&I 5,916 5,136 Private bank (4) 8,370 4,901 CRE (4) 2,753 — Premium wine (4) 980 1,053 Other C&I 1,259 — Other (4) 252 28 PPP 565 1,559 Total loans (1) (2) (3) $ 61,487 $ 45,181 ACL (398) (448) Net loans $ 61,089 $ 44,733 (1) Total loans at amortized cost is net of unearned income of $240 million and $226 million at September 30, 2021 and December 31, 2020, respectively. (2) Included within our total loan portfolio are credit card loans of $548 million and $400 million at September 30, 2021 and December 31, 2020, respectively. (3) Included within our total loan portfolio are construction loans of $320 million and $118 million at September 30, 2021 and December 31, 2020, respectively. (4) Of our total loans, the table below includes those secured by real estate at amortized cost at September 30, 2021 and December 31, 2020 and were comprised of the following: (Dollars in millions) September 30, 2021 December 31, 2020 Real estate secured loans: Private bank: Loans for personal residence $ 6,684 $ 3,392 Loans to eligible employees 449 481 Home equity lines of credit 131 43 Other 136 143 Total private bank loans secured by real estate $ 7,400 $ 4,059 CRE: Multifamily and residential investment 1,047 — Retail 564 — Office and medical 540 — Manufacturing, industrial and warehouse 309 — Hospitality 155 — Other 138 — Total CRE loans secured by real estate $ 2,753 $ — Premium wine 795 824 Other 281 57 Total real estate secured loans $ 11,229 $ 4,940
Credit Quality Indicators, Broken out by Portfolio Segment and Class of Financing Receivables	The following tables summarize the credit quality indicators, broken out by class of financing receivable and vintage year, as of September 30, 2021 and December 31, 2020: Term Loans by Origination Year September 30, 2021 (Dollars in millions) 2021 2020 2019 2018 2017 Prior Revolving Loans Revolving Loans Converted to Term Loans Unallocated (1) Total Global fund banking: Risk rating: Pass $ 470 $ 111 $ 40 $ 54 $ 12 $ 6 $ 33,423 $ — $ — $ 34,116 Criticized — — — — — — 3 1 — 4 Nonperforming — — — — — — — — — — Total global fund banking $ 470 $ 111 $ 40 $ 54 $ 12 $ 6 $ 33,426 $ 1 $ — $ 34,120 Investor dependent: Early stage: Risk rating: Pass $ 605 $ 386 $ 174 $ 35 $ 8 $ 1 $ 149 $ — $ — $ 1,358 Criticized 26 99 31 5 1 — 26 — — 188 Nonperforming — — 3 1 — — — — — 4 Total early stage $ 631 $ 485 $ 208 $ 41 $ 9 $ 1 $ 175 $ — $ — $ 1,550 Growth stage: Risk rating: Pass $ 1,609 $ 1,120 $ 369 $ 113 $ 22 $ 2 $ 316 $ 5 $ — $ 3,556 Criticized 80 84 51 4 1 — 25 — — 245 Nonperforming — 14 1 3 — — 8 — — 26 Total growth stage $ 1,689 $ 1,218 $ 421 $ 120 $ 23 $ 2 $ 349 $ 5 $ — $ 3,827 Total investor dependent $ 2,320 $ 1,703 $ 629 $ 161 $ 32 $ 3 $ 524 $ 5 $ — $ 5,377 Cash flow dependent - SLBO: Risk rating: Pass $ 780 $ 489 $ 280 $ 94 $ 85 $ — $ 34 $ — $ — $ 1,762 Criticized 2 14 18 39 10 13 3 — — 99 Nonperforming — — 12 10 7 — 5 — — 34 Total cash flow dependent - SLBO $ 782 $ 503 $ 310 $ 143 $ 102 $ 13 $ 42 $ — $ — $ 1,895 Innovation C&I Risk rating: Pass $ 1,426 $ 1,298 $ 334 $ 260 $ 131 $ 3 $ 1,983 $ — $ — $ 5,435 Criticized 35 112 73 17 — — 244 — — 481 Nonperforming — — — — — — — — — — Total innovation C&I $ 1,461 $ 1,410 $ 407 $ 277 $ 131 $ 3 $ 2,227 $ — $ — $ 5,916 Private bank: Risk rating: Pass $ 2,163 $ 2,159 $ 1,259 $ 566 $ 496 $ 1,053 $ 625 $ 10 $ — $ 8,331 Criticized — — 6 2 4 13 3 — — 28 Nonperforming — — — 1 — 9 — 1 — 11 Total private bank $ 2,163 $ 2,159 $ 1,265 $ 569 $ 500 $ 1,075 $ 628 $ 11 $ — $ 8,370 CRE Risk rating: Pass $ 256 $ 249 $ 359 $ 160 $ 263 $ 927 $ 120 $ 15 $ — $ 2,349 Criticized 3 29 109 50 50 125 19 — — 385 Nonperforming — — 5 14 — — — — — 19 Total CRE $ 259 $ 278 $ 473 $ 224 $ 313 $ 1,052 $ 139 $ 15 $ — $ 2,753 Premium wine: Risk rating: Pass $ 129 $ 131 $ 182 $ 68 $ 66 $ 148 $ 114 $ 34 $ — $ 872 Criticized 2 12 11 16 — 38 12 — — 91 Nonperforming — — 7 — 10 — — — — 17 Total premium wine $ 131 $ 143 $ 200 $ 84 $ 76 $ 186 $ 126 $ 34 $ — $ 980 Other C&I Risk rating: Pass $ 159 $ 179 $ 96 $ 93 $ 33 $ 310 $ 324 $ 10 $ — $ 1,204 Criticized 5 4 10 9 2 2 15 5 — 52 Nonperforming — — — 1 — 1 1 — — 3 Total other C&I $ 164 $ 183 $ 106 $ 103 $ 35 $ 313 $ 340 $ 15 $ — $ 1,259 Other: Risk rating: Pass $ 25 $ 114 $ 97 $ 21 $ 13 $ — $ 4 $ — $ (29) $ 245 Criticized — — 1 3 3 — — — — 7 Nonperforming — — — — — — — — — — Total other $ 25 $ 114 $ 98 $ 24 $ 16 $ — $ 4 $ — $ (29) $ 252 PPP: Risk rating: Pass $ 387 $ 120 $ — $ — $ — $ — $ — $ — $ — $ 507 Criticized 27 31 — — — — — — — 58 Nonperforming — — — — — — — — — — Total PPP $ 414 $ 151 $ — $ — $ — $ — $ — $ — $ — $ 565 Total loans $ 8,189 $ 6,755 $ 3,528 $ 1,639 $ 1,217 $ 2,651 $ 37,456 $ 81 $ (29) $ 61,487 (1) These amounts consist of fees and clearing items that have not yet been allocated at the loan level. Term Loans by Origination Year December 31, 2020 (Dollars in millions) 2020 2019 2018 2017 2016 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Global fund banking: Risk rating: Pass $ 440 $ 48 $ 69 $ 23 $ 2 $ 6 $ 24,947 $ 2 $ 25,537 Criticized — — — — — — — 6 6 Nonperforming — — — — — — — — — Total global fund banking $ 440 $ 48 $ 69 $ 23 $ 2 $ 6 $ 24,947 $ 8 $ 25,543 Investor dependent: Early stage: Risk rating: Pass $ 667 $ 370 $ 121 $ 32 $ 1 $ 1 $ 96 $ 1 $ 1,289 Criticized 47 73 26 10 4 — 19 — 179 Nonperforming 2 9 5 1 — — 1 — 18 Total early stage $ 716 $ 452 $ 152 $ 43 $ 5 $ 1 $ 116 $ 1 $ 1,486 Growth stage: Risk rating: Pass $ 1,746 $ 696 $ 316 $ 61 $ 5 $ 9 $ 325 $ 8 $ 3,166 Criticized 65 103 56 9 — 7 47 — 287 Nonperforming 17 3 4 3 — — 6 — 33 Total growth stage $ 1,828 $ 802 $ 376 $ 73 $ 5 $ 16 $ 378 $ 8 $ 3,486 Total investor dependent $ 2,544 $ 1,254 $ 528 $ 116 $ 10 $ 17 $ 494 $ 9 $ 4,972 Cash flow dependent - SLBO: Risk rating: Pass $ 791 $ 452 $ 274 $ 167 $ 37 $ — $ 75 $ — $ 1,796 Criticized — 70 39 22 13 — 9 — 153 Nonperforming — 12 16 7 — — 5 — 40 Total cash flow dependent - SLBO $ 791 $ 534 $ 329 $ 196 $ 50 $ — $ 89 $ — $ 1,989 Innovation C&I: Risk rating: Pass $ 1,718 $ 703 $ 378 $ 152 $ 39 $ — $ 1,791 $ 1 $ 4,782 Criticized 75 72 34 4 — — 163 — 348 Nonperforming — — 5 — — — 1 — 6 Total sponsor led buyout $ 1,793 $ 775 $ 417 $ 156 $ 39 $ — $ 1,955 $ 1 $ 5,136 Private bank: Risk rating: Pass $ 1,878 $ 1,153 $ 394 $ 353 $ 295 $ 406 $ 382 $ 1 $ 4,862 Criticized 3 10 5 1 5 8 1 — 33 Nonperforming — — 3 — — 2 1 — 6 Total private bank $ 1,881 $ 1,163 $ 402 $ 354 $ 300 $ 416 $ 384 $ 1 $ 4,901 Premium wine: Risk rating: Pass $ 127 $ 194 $ 71 $ 79 $ 115 $ 154 $ 135 $ 36 $ 911 Criticized 18 24 36 10 13 6 34 — 141 Nonperforming — — — — 1 — — — 1 Total Premium wine $ 145 $ 218 $ 107 $ 89 $ 129 $ 160 $ 169 $ 36 $ 1,053 Other: Risk rating: Pass $ — $ 16 $ 11 $ — $ — $ 1 $ — $ — $ 28 Criticized — — — — — — — — — Nonperforming — — — — — — — — — Total other $ — $ 16 $ 11 $ — $ — $ 1 $ — $ — $ 28 PPP: Risk rating: Pass $ 1,456 $ — $ — $ — $ — $ — $ — $ — $ 1,456 Criticized 103 — — — — — — — 103 Nonperforming — — — — — — — — — Total PPP $ 1,559 $ — $ — $ — $ — $ — $ — $ — $ 1,559 Total loans $ 9,153 $ 4,008 $ 1,863 $ 934 $ 530 $ 600 $ 28,038 $ 55 $ 45,181
Activity in Allowance for Loan Losses Broken out by Portfolio Segment	The following tables summarize the activity relating to our ACL for loans for the three and nine months ended September 30, 2021 and 2020, broken out by portfolio segment: Three months ended September 30, 2021 Beginning Balance June 30, 2021 Initial Allowance on PCD Loans Charge-offs Recoveries (Reduction) Provision for Credit Losses (1) Ending Balance September 30, 2021 (Dollars in millions) Global fund banking $ 66 $ — $ — $ — $ (7) $ 59 Investor dependent 158 — (17) 5 (8) 138 Cash flow dependent and innovation C&I 119 — (1) 3 (12) 109 Private bank 47 1 (1) — (16) 31 CRE — 17 — — 23 40 Other C&I — 4 — — 8 12 Premium wine and other 6 — — — 3 9 Total ACL $ 396 $ 22 $ (19) $ 8 $ (9) $ 398 (1) The provision for loan losses for the three months ended September 30, 2021 includes a post-combination provision of $44 million related to non-PCD loans from the Boston Private acquisition. Three months ended September 30, 2020 Beginning Balance June 30, 2020 Charge-offs Recoveries (Reduction) Provision for Credit Losses Foreign Currency Translation Adjustments Ending Balance September 30, 2020 (Dollars in millions) Global fund banking $ 54 $ — $ — $ (15) $ — $ 39 Investor dependent 292 (28) 4 (5) — 263 Cash flow dependent and innovation C&I 123 — — (2) — 121 Private Bank 91 — — (15) — 76 Premium wine and other 26 — — (16) 1 11 PPP 4 — — (1) — 3 Total ACL $ 590 $ (28) $ 4 $ (54) $ 1 $ 513 Nine months ended September 30, 2021 Beginning Balance December 31, 2020 Initial Allowance on PCD Loans Charge-offs Recoveries Provision (Reduction) for Credit Losses (1) Ending Balance September 30, 2021 (Dollars in millions) Global fund banking $ 46 $ — $ (80) $ — $ 93 $ 59 Investor dependent 213 — (37) 13 (51) 138 Cash flow dependent and innovation C&I 125 — (8) 3 (11) 109 Private bank 53 1 (3) — (20) 31 CRE — 17 — — 23 40 Other C&I — 4 — — 8 12 Premium wine and other 9 — (1) — 1 9 PPP 2 — — — (2) — Total ACL $ 448 $ 22 $ (129) $ 16 $ 41 $ 398 (1) The provision for loan losses for the nine months ended September 30, 2021 includes a post-combination provision of $44 million related to non-PCD loans from the Boston Private acquisition. Nine months ended September 30, 2020 Beginning Balance December 31, 2019 Impact of Adopting ASC 326 Charge-offs Recoveries Provision (Reduction) for Credit Losses Foreign Currency Translation Adjustments Ending Balance September 30, 2020 (Dollars in millions) Global fund banking $ 107 $ (70) $ — $ — $ 2 $ — $ 39 Investor dependent 82 72 (67) 12 165 (1) 263 Cash flow dependent and innovation C&I 81 (1) (11) 3 50 (1) 121 Private bank 22 12 (2) — 44 — 76 Premium wine and other 13 12 — 1 (17) 2 11 PPP — — — — 3 — 3 Total ACL $ 305 $ 25 $ (80) $ 16 $ 247 $ — $ 513 The following table summarizes the activity relating to our ACL for unfunded credit commitments for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 ACL: unfunded credit commitments, beginning balance $ 120 $ 99 $ 121 $ 67 Impact of adopting ASC 326 — — — 23 Provision for credit losses (1) 29 2 28 11 ACL: unfunded credit commitments, ending balance (2) $ 149 $ 101 $ 149 $ 101 (1) The provision for credit losses for unfunded credit commitments for the three and nine months ended September 30, 2021 includes a post-combination provision of $2 million related to commitments acquired from Boston Private. (2) The “ACL: unfunded credit commitments” is included as a component of “other liabilities” on our unaudited interim consolidated balance sheets. See Note 12 — “Off-Balance Sheet Arrangements, Guarantees and Other Commitments” of this report for additional disclosures related to our commitments to extend credit.
Financing Receivable, Past Due	The following table summarizes the aging of our loans broken out by class of financing receivable as of September 30, 2021 and December 31, 2020: (Dollars in millions) 30 - 59 60 - 89 Equal to or Greater Total Past Current Total Loans Past Due September 30, 2021: Global fund banking $ — $ — $ — $ — $ 34,120 $ 34,120 $ — Investor dependent: Early stage 1 — — 1 1,549 1,550 — Growth stage 2 — — 2 3,825 3,827 — Total investor dependent 3 — — 3 5,374 5,377 — Cash flow dependent - SLBO — — — — 1,895 1,895 — Innovation C&I 1 3 — 4 5,912 5,916 — Private bank 1 2 8 11 8,359 8,370 2 CRE 14 — — 14 2,739 2,753 — Premium wine — — 17 17 963 980 — Other C&I 3 1 1 5 1,254 1,259 — Other — — — — 252 252 — PPP — — 1 1 564 565 1 Total loans $ 22 $ 6 $ 27 $ 55 $ 61,432 $ 61,487 $ 3 December 31, 2020: Global fund banking $ 28 $ — $ — $ 28 $ 25,515 $ 25,543 $ — Investor dependent: Early stage 6 2 — 8 1,478 1,486 — Growth stage 11 — 1 12 3,474 3,486 — Total investor dependent 17 2 1 20 4,952 4,972 — Cash flow dependent - SLBO — — — — 1,989 1,989 — Innovation C&I 7 1 — 8 5,128 5,136 — Private bank 4 4 — 8 4,893 4,901 — Premium wine 3 — 1 4 1,049 1,053 — Other — — — — 28 28 — PPP — — — — 1,559 1,559 — Total loans $ 59 $ 7 $ 2 $ 68 $ 45,113 $ 45,181 $ —
Financing Receivable, Nonaccrual	The following table summarizes our nonaccrual loans with no allowance for credit loss at September 30, 2021 and December 31, 2020: September 30, 2021 December 31, 2020 (Dollars in millions) Nonaccrual Loans Nonaccrual Loans with no Allowance for Credit Loss Nonaccrual Loans Nonaccrual Loans with no Allowance for Credit Loss Investor dependent: Early stage $ 4 $ — $ 18 $ — Growth stage 26 — 33 3 Total investor dependent 30 — 51 3 Cash flow dependent - SLBO 34 — 40 — Innovation C&I — — 6 1 Private bank 11 2 6 3 CRE 19 — — — Premium wine 17 17 1 1 Other C&I 3 — — — Total nonaccrual loans (1) $ 114 $ 19 $ 104 $ 8 (1) Nonaccrual loans at September 30, 2021 include $31 million of loans that were acquired from Boston Private.
Summary of Loans Modified in Troubled Debt Restructurings ("TDRs") by Risk-based Segment	The following table summarizes our loans modified in TDRs, broken out by class of financing receivable at September 30, 2021 and December 31, 2020: (Dollars in millions) September 30, 2021 December 31, 2020 Loans modified in TDRs: Investor dependent: Early stage $ — $ 7 Growth stage 26 29 Total investor dependent 26 36 Cash flow dependent - SLBO 34 22 Innovation C&I — 1 Private bank 10 — CRE 48 — Premium wine 2 2 Other C&I 2 — Total loans modified in TDRs (1) $ 122 $ 61 (1) Loans modified in TDRs at September 30, 2021 include 48 loans with a total balance of $60 million that were acquired from Boston Private.
Recorded Investment in Loans Modified in TDRs	The following table summarizes the recorded investment in loans modified in TDRs, broken out by class of financing receivable, for modifications made during the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Loans modified in TDRs during the period: Investor dependent: Early stage $ — $ 4 $ 1 $ 4 Growth stage 8 — 8 4 Total investor dependent 8 4 9 8 Cash flow dependent - SLBO — 21 12 21 Innovation C&I — 1 — 2 Private bank 2 — 2 — CRE 43 — 43 — Premium wine — — — 1 Total loans modified in TDRs during the period (1) (2) $ 53 $ 26 $ 66 $ 32 (1) There were no partial charge-offs for the three months ended September 30, 2021 and $7 million for the nine months then ended, compared to $14 million and $31 million of partial charge-offs for the three and nine months ended September 30, 2020, respectively. (2) Loans modified in TDRs during the three and nine months ended September 30, 2021 include $45 million of loans acquired from Boston Private that were subsequently modified in TDRs.
Troubled Debt Restructurings On Financing Receivables Subsequently Defaulted Table	The following table summarizes the recorded investment in loans modified in TDRs within the previous 12 months that subsequently defaulted during the three and nine months ended September 30, 2021 and September 30, 2020: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 TDRs modified within the previous 12 months that defaulted during the period: Premium wine $ — $ 1 $ — $ 1 Total TDRs modified within the previous 12 months that defaulted in the period $ — $ 1 $ — $ 1

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The changes in goodwill were as follows for the nine months ended September 30, 2021: (Dollars in millions) Goodwill Beginning balance at December 31, 2020 $ 143 Acquisitions 201 Ending balance at September 30, 2021 $ 344
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination	The components of net other intangible assets were as follows: September 30, 2021 December 31, 2020 (Dollars in millions) Gross Amount Accumulated Amortization Net Carrying Amount Gross Amount Accumulated Amortization Net Carrying Amount Other intangible assets: Customer relationships $ 127 $ 12 $ 115 $ 42 $ 8 $ 34 Other 55 14 41 36 9 27 Total other intangible assets $ 182 $ 26 $ 156 $ 78 $ 17 $ 61
Finite-lived Intangible Assets Amortization Expense	For the nine months ended September 30, 2021, we recorded amortization expense of $9 million. Assuming no future impairments of other intangible assets or additional acquisitions or dispositions, the following table presents the Company's future expected amortization expense for other intangible assets that will continue to be amortized as of September 30, 2021: Years ended December 31, Other 2021 (excluding the nine months ended September 30, 2021) $ 9 2022 21 2023 19 2024 18 2025 15 2026 and thereafter 74 Total future amortization expense $ 156

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	The following table summarizes the amortized cost basis of hedged assets that are designated and qualify as fair value hedges and the cumulative amount of fair value hedging adjustments included in the carrying value that have been recorded on our unaudited interim consolidated balance sheets as of September 30, 2021: September 30, 2021 (Dollars in millions) Amortized Cost Basis of the Hedged Assets Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets (2) AFS securities (1) $ 17,524 $ (13) (1) These amounts include the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the last layer expected to be remaining at the end of the hedging relationship. At September 30, 2021, the amortized cost basis of the closed portfolios used in these hedging relationships was $13.4 billion, the amounts of the designated hedged items was $7.3 billion and the cumulative basis adjustments associated with these hedging relationships was $13 million. (2) The balance includes $6 million of hedging adjustments on discontinued hedging relationships at September 30, 2021.
Total Notional or Contractual Amounts, Fair Value, Collateral and Net Exposure of Derivative Financial Instruments	The total notional or contractual amounts and fair value of our derivative financial instruments at September 30, 2021 and December 31, 2020 were as follows: September 30, 2021 December 31, 2020 Notional or Fair Value Notional or Fair Value (Dollars in millions) Derivative Assets (1) Derivative Liabilities (1) Derivative Assets (1) Derivative Liabilities (1) Derivatives designated as hedging instruments: Interest rate risks: Interest rate swaps (2) $ 9,175 $ 14 $ — $ — $ — $ — Interest rate swaps 2,125 — — — — — Derivatives not designated as hedging instruments: Currency exchange risks: Foreign exchange forwards and swaps 651 12 — 68 — — Foreign exchange forwards and swaps 80 — 1 567 — 20 Other derivative instruments: Equity warrant assets 309 274 — 253 203 — Client foreign exchange forwards and swaps 8,974 171 — 8,026 215 — Client foreign exchange forwards and swaps 8,652 — 155 7,491 — 188 Client foreign currency options 196 2 — 98 2 — Client foreign currency options 196 — 2 98 — 2 Client interest rate derivatives 2,249 115 — 1,082 68 — Client interest rate derivatives (2) 2,264 — 116 1,251 — 27 Total derivatives not designated as hedging instruments 574 274 488 237 Total derivatives $ 588 $ 274 $ 488 $ 237 (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 $5 million of derivative assets and $45 million of derivative liabilities at September 30, 2021 and December 31, 2020, respectively, reflecting variation margin treated as settlement of the related derivative fair values for legal and accounting purposes as required by central clearing houses.
Summary of Derivative Activity and Related Impact on Consolidated Statements of Income	A summary of our derivative activity and the related impact on our consolidated statements of income for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) Statement of income location 2021 2020 2021 2020 Derivatives designated as hedging instruments: Interest rate risks: Amounts reclassified from AOCI into income Interest income - loans $ 16 $ 16 $ 47 $ 34 Change in fair value of interest rate swaps hedging investment securities Interest income - investment securities taxable 5 — 18 — Change in fair value of hedged investment securities Interest income - investment securities taxable (6) — (19) — Net gains associated with interest rate risk derivatives $ 15 $ 16 $ 46 $ 34 Derivatives not designated as hedging instruments: Currency exchange risks: (Losses) gains on revaluations of internal foreign currency instruments, net Other noninterest income $ (14) $ 17 (35) $ 20 Gains (losses) on internal foreign exchange forward contracts, net Other noninterest income 14 (19) 35 (20) Net gains (losses) associated with internal currency risk $ — $ (2) $ — $ — Other derivative instruments: Gains (losses) on revaluations of client foreign currency instruments, net Other noninterest income $ 1 $ — $ 16 $ (3) (Losses) gains on client foreign exchange forward contracts, net Other noninterest income (5) 2 (15) 2 Net (losses) gains associated with client currency risk $ (4) $ 2 $ 1 $ (1) Net gains on equity warrant assets Gains on equity warrant assets, net $ 147 $ 54 $ 491 $ 94 Net gains on other derivatives Other noninterest income $ 2 $ 31 $ 4 $ 27
Offsetting Assets	The following table summarizes our assets subject to enforceable master netting arrangements as of September 30, 2021 and December 31, 2020: Gross Amounts of Recognized Assets Gross Amounts offset in the Statement of Financial Position Net Amounts of Assets Presented in the Statement of Financial Position Gross Amounts Not Offset in the Statement of Financial Position but Subject to Master Netting Arrangements Net Amount (Dollars in millions) Financial Instruments Cash Collateral Received (1) September 30, 2021 Derivative assets: Interest rate swaps $ 14 $ — $ 14 $ — $ (7) $ 7 Foreign exchange forwards and swaps 183 — 183 (71) (33) 79 Foreign currency options 2 — 2 — — 2 Client interest rate derivatives 115 — 115 (113) (2) — Total derivative assets 314 — 314 (184) (42) 88 Reverse repurchase, securities borrowing, and similar arrangements 216 — 216 (216) — — Total $ 530 $ — $ 530 $ (400) $ (42) $ 88 December 31, 2020 Derivative assets: Interest rate swaps $ — $ — $ — $ — $ — $ — Foreign exchange forwards and swaps 215 — 215 (76) (21) 118 Foreign currency options 2 — 2 (1) — 1 Client interest rate derivatives 68 — 68 (68) — — Total derivative assets 285 — 285 (145) (21) 119 Reverse repurchase, securities borrowing, and similar arrangements 227 — 227 (227) — — Total $ 512 $ — $ 512 $ (372) $ (21) $ 119 (1) Cash collateral received from our counterparties in relation to market value exposures of derivative contracts in our favor is recorded as a component of “short-term borrowings” on our consolidated balance sheets.
Offsetting Liabilities	The following table summarizes our liabilities subject to enforceable master netting arrangements as of September 30, 2021 and December 31, 2020: Gross Amounts of Recognized Liabilities Gross Amounts offset in the Statement of Financial Position Net Amounts of Liabilities Presented in the Statement of Financial Position Gross Amounts Not Offset in the Statement of Financial Position but Subject to Master Netting Arrangements Net Amount (Dollars in millions) Financial Instruments Cash Collateral Pledged (1) September 30, 2021 Derivative liabilities: Interest rate swaps $ — $ — $ — $ — $ — $ — Foreign exchange forwards and swaps 156 — 156 (66) (14) 76 Foreign currency options 2 — 2 (1) (1) — Client interest rate derivatives 116 — 116 (50) (66) — Total derivative liabilities 274 — 274 (117) (81) 76 Repurchase, securities lending, and similar arrangements 97 — 97 — — 97 Total $ 371 $ — $ 371 $ (117) $ (81) $ 173 December 31, 2020 Derivative liabilities: Interest rate swaps $ — $ — $ — $ — $ — $ — Foreign exchange forwards and swaps 208 — 208 (84) (45) 79 Foreign currency options 2 — 2 (1) — 1 Client interest rate derivatives 27 — 27 — (26) 1 Total derivative liabilities 237 — 237 (85) (71) 81 Repurchase, securities lending, and similar arrangements — — — — — — Total $ 237 $ — $ 237 $ (85) $ (71) $ 81 (1) Cash collateral pledged to our counterparties in relation to market value exposures of derivative contracts in a liability position and repurchase agreements are recorded as a component of “cash and cash equivalents " on our consolidated balance sheets.

Noninterest Income (Tables)

Noninterest Income (Tables)	9 Months Ended
	Sep. 30, 2021
Other Income and Expenses [Abstract]
Summary of Noninterest Income	Included below is a summary of noninterest income for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Noninterest income: Gains on investment securities, net $ 189 $ 190 $ 661 $ 271 Gains on equity warrant assets, net 147 54 491 94 Client investment fees 20 32 55 107 Wealth management and trust fees 22 — 22 — Foreign exchange fees 65 44 189 128 Credit card fees 34 23 93 72 Deposit service charges 29 22 82 67 Lending related fees 21 13 55 38 Letters of credit and standby letters of credit fees 13 12 39 35 Investment banking revenue 90 92 335 281 Commissions 17 16 58 49 Other 25 49 97 76 Total noninterest income $ 672 $ 547 $ 2,177 $ 1,218
Components of Gains and Losses (Realized and Unrealized) on Investment Securities	A summary of gains and losses on investment securities for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Gains on non-marketable and other equity securities, net $ 189 $ 190 $ 661 $ 210 Gains on sales of AFS securities, net — — — 61 Total gains on investment securities, net $ 189 $ 190 $ 661 $ 271
Components of Gains on Equity Warrant Assets	A summary of net gains on equity warrant assets for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Equity warrant assets: Gains on exercises, net $ 91 $ 24 $ 381 $ 59 Terminations (1) — (2) (1) Changes in fair value, net 57 30 112 36 Total net gains on equity warrant assets $ 147 $ 54 $ 491 $ 94
Components of Client Investment Fees	A summary of client investment fees by instrument type for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Client investment fees by type: Sweep money market fees $ 12 $ 18 $ 31 $ 61 Asset management fees (1) 7 12 22 33 Repurchase agreement fees 1 2 2 13 Total client investment fees (2) $ 20 $ 32 $ 55 $ 107 (1) Represents fees earned from investments in third-party money market mutual funds and fixed-income securities managed by SVB Asset Management. (2) Represents fees earned on client investment funds that are maintained at third-party financial institutions and are not recorded on our balance sheet.
Components of Wealth Management and Trust Fees	A summary of wealth management and trust fees by instrument type for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Wealth management and trust fees by type: Wealth management fees $ 20 $ — $ 20 $ — Trust fees 2 — 2 — Total wealth management and trust fees $ 22 $ — $ 22 $ —
Components of Foreign Exchange Fees	A summary of foreign exchange fee income by instrument type for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Foreign exchange fees by instrument type: Spot contract commissions $ 60 $ 39 $ 175 $ 113 Forward contract commissions 5 5 13 14 Option premium fees — — 1 1 Total foreign exchange fees $ 65 $ 44 $ 189 $ 128
Components of Credit Card Fees	A summary of credit card fees by instrument type for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Credit card fees by instrument type: Card interchange fees, net $ 29 $ 18 $ 78 $ 55 Merchant service fees 4 4 12 14 Card service fees 1 1 3 3 Total credit card fees $ 34 $ 23 $ 93 $ 72
Components of Lending Related Fees	A summary of lending related fees by instrument type for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Lending related fees by instrument type: Unused commitment fees $ 14 $ 10 $ 42 $ 27 Other 7 3 13 11 Total lending related fees $ 21 $ 13 $ 55 $ 38
Schedule of Investment Banking Revenue	A summary of investment banking revenue by instrument type for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Investment banking revenue: Underwriting fees $ 39 $ 85 $ 248 $ 248 Advisory fees 26 2 39 26 Private placements and other 25 5 48 7 Total investment banking revenue $ 90 $ 92 $ 335 $ 281
Summary of Other Noninterest Income	A summary of other noninterest income by instrument type for the three and nine months ended September 30, 2021 and 2020 is as follows: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Other noninterest income by instrument type: Fund management fees $ 15 $ 10 $ 51 $ 26 Net gains on revaluation of foreign currency instruments, net of foreign exchange forward contracts (1) (4) (1) 1 (1) Gains from conversion of convertible debt options — 30 — 30 Other service revenue 14 10 45 21 Total other noninterest income $ 25 $ 49 $ 97 $ 76 (1) Represents the net revaluation of client and internal foreign currency denominated financial instruments. We enter into foreign exchange forward contracts to economically reduce our foreign exchange exposure related to client and internal foreign currency denominated financial instruments.
Disaggregation of Revenue	The following tables present our revenues from contracts with customers disaggregated by revenue source and segment for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, 2021 Global SVB Private SVB Capital (2) SVB Other Items Total (Dollars in millions) Revenue from contracts with customers: Client investment fees $ 20 $ — $ — $ — $ — $ 20 Wealth management and trust fees — 22 — — — 22 Spot contract commissions 59 1 — — — 60 Card interchange fees, gross 52 — — — — 52 Merchant service fees 4 — — — — 4 Deposit service charges 28 — — — 1 29 Investment banking revenue — — — 90 — 90 Commissions — — — 17 — 17 Fund management fees — — 14 1 — 15 Performance fees — — 4 — — 4 Correspondent bank rebates 2 — — — — 2 Total revenue from contracts with customers $ 165 $ 23 $ 18 $ 108 $ 1 $ 315 Revenues outside the scope of ASC 606 (1) 17 2 127 23 188 357 Total noninterest income $ 182 $ 25 $ 145 $ 131 $ 189 $ 672 (1) Amounts are accounted for under separate guidance than ASC 606. (2) Global Commercial Bank’s, SVB Capital’s and SVB Leerink's components of noninterest income are shown net of noncontrolling interests. Noncontrolling interest is included within “Other Items. " Three months ended September 30, 2020 Global SVB Private SVB Capital (2) SVB Other Items Total (Dollars in millions) Revenue from contracts with customers: Client investment fees $ 31 $ 1 $ — $ — $ — $ 32 Spot contract commissions 39 — — — — 39 Card interchange fees, gross 29 — — — — 29 Merchant service fees 4 — — — — 4 Deposit service charges 22 — — — — 22 Investment banking revenue — — — 92 — 92 Commissions — — — 16 — 16 Fund management fees — — 8 2 — 10 Performance fees — — 2 — — 2 Correspondent bank rebates 1 — — — — 1 Total revenue from contracts with customers $ 126 $ 1 $ 10 $ 110 $ — $ 247 Revenues outside the scope of ASC 606 (1) 22 — 50 4 224 300 Total noninterest income $ 148 $ 1 $ 60 $ 114 $ 224 $ 547 (1) Amounts are accounted for under separate guidance than ASC 606. (2) Global Commercial Bank’s, SVB Capital’s and SVB Leerink's components of noninterest income are shown net of noncontrolling interests. Noncontrolling interest is included within “Other Items. " Nine months ended September 30, 2021 Global SVB Private SVB Capital (2) SVB Other Items Total (Dollars in millions) Revenue from contracts with customers: Client investment fees $ 53 $ 2 $ — $ — $ — $ 55 Wealth management and trust fees — 22 — — — 22 Spot contract commissions 174 1 — — — 175 Card interchange fees, gross 141 — — — 1 142 Merchant service fees 12 — — — — 12 Deposit service charges 80 — — — 2 82 Investment banking revenue — — — 335 — 335 Commissions — — — 58 — 58 Fund management fees — — 47 4 — 51 Performance fees — — 12 — — 12 Correspondent bank rebates 4 — — — — 4 Total revenue from contracts with customers $ 464 $ 25 $ 59 $ 397 $ 3 $ 948 Revenues outside the scope of ASC 606 (1) 51 2 330 53 793 1,229 Total noninterest income $ 515 $ 27 $ 389 $ 450 $ 796 $ 2,177 (1) Amounts are accounted for under separate guidance than ASC 606. (2) Global Commercial Bank’s, SVB Capital’s and SVB Leerink's components of noninterest income are shown net of noncontrolling interests. Noncontrolling interest is included within “Other Items. " Nine months ended September 30, 2020 Global SVB Private SVB Capital (2) SVB Other Items Total (Dollars in millions) Revenue from contracts with customers: Client investment fees $ 105 $ 2 $ — $ — $ — $ 107 Spot contract commissions 113 — — — — 113 Card interchange fees, gross 91 — — — 1 92 Merchant service fees 14 — — — — 14 Deposit service charges 67 — — — — 67 Investment banking revenue — — — 281 — 281 Commissions — — — 49 — 49 Fund management fees — — 22 4 — 26 Performance fees — — 4 — — 4 Correspondent bank rebates 4 — — — — 4 Total revenue from contracts with customers $ 394 $ 2 $ 26 $ 334 $ 1 $ 757 Revenues outside the scope of ASC 606 (1) 54 — 61 6 340 461 Total noninterest income $ 448 $ 2 $ 87 $ 340 $ 341 $ 1,218 (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. "

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Segment Reporting	Our reportable segment information for the three and nine months ended September 30, 2021 and 2020 is as follows: (Dollars in millions) Global SVB Private SVB Capital (1) SVB Other Items (2) Total Three months ended September 30, 2021 Net interest income $ 774 $ 66 $ — $ — $ 12 $ 852 (Provision for) reduction of credit losses 29 (20) — — (30) (21) Noninterest income 182 25 145 131 189 672 Noninterest expense (3) (339) (90) (15) (142) (293) (879) Income (loss) before income tax expense (4) $ 646 $ (19) $ 130 $ (11) $ (122) $ 624 Total average loans, amortized cost $ 45,798 $ 12,506 $ — $ — $ 987 $ 59,291 Total average assets (5) (6) 152,364 14,918 730 837 13,841 182,690 Total average deposits 149,160 13,150 — — 1,082 163,392 Three months ended September 30, 2020 Net interest income (loss) $ 513 $ 19 $ — $ — $ (4) $ 528 Reduction (provision for) credit losses 38 15 — — (1) 52 Noninterest income 148 1 60 114 224 547 Noninterest expense (3) (258) (12) (11) (78) (132) (491) Income before income tax expense (4) $ 441 $ 23 $ 49 $ 36 $ 87 $ 636 Total average loans, amortized cost $ 30,764 $ 4,263 $ — $ — $ 2,292 $ 37,319 Total average assets (5) (6) 77,803 4,297 414 605 5,229 88,348 Total average deposits 74,826 2,164 — — 690 77,680 Nine months ended September 30, 2021 Net interest income $ 2,108 $ 122 $ — $ — $ 10 $ 2,240 Provision for credit losses (27) (16) — — (32) (75) Noninterest income 515 27 389 450 796 2,177 Noninterest expense (3) (919) (118) (48) (376) (707) (2,168) Income before income tax expense (4) $ 1,677 $ 15 $ 341 $ 74 $ 67 $ 2,174 Total average loans, amortized cost $ 42,628 $ 7,573 $ — $ — $ 1,642 $ 51,843 Total average assets (5) (6) 131,218 8,418 641 778 11,897 152,952 Total average deposits 128,272 6,842 — — 999 136,113 Nine months ended September 30, 2020 Net interest income $ 1,462 $ 53 $ — $ — $ 50 $ 1,565 Provision for credit losses (200) (44) — — (14) (258) Noninterest income 448 2 87 340 341 1,218 Noninterest expense (3) (725) (33) (28) (248) (336) (1,370) Income (loss) before income tax expense (4) $ 985 $ (22) $ 59 $ 92 $ 41 1,155 Total average loans, amortized cost $ 30,127 $ 4,053 $ — $ — $ 1,656 $ 35,836 Total average assets (5) (6) 69,213 4,088 430 515 5,515 79,761 Total average deposits 66,408 2,069 — — 689 69,166 (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 reportable segments to the consolidated financial statements prepared in conformity with GAAP. Net interest income consists primarily of interest earned from our fixed income investment portfolio, net of FTP. Noninterest income consists primarily of gains or losses on equity warrant assets, gains or losses on the sale of AFS securities and gains or losses on equity securities from exercised warrant assets. Noninterest expense consists primarily of expenses associated with corporate support functions such as finance, human resources, marketing, legal and other expenses. (3) The Global Commercial Bank segment includes direct depreciation and amortization of $10 million and $6 million for the three months ended September 30, 2021 and 2020, respectively, and $25 million and $18 million for the nine months ended September 30, 2021 and 2020, 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 and Private Bank is goodwill of $138 million and $201 million, respectively, for both the three and nine months ended September 30, 2021. Included in the total average assets for SVB Leerink is goodwill of $138 million for both the three and nine months ended September 30, 2020.

Off-Balance Sheet Arrangement_2

Off-Balance Sheet Arrangements, Guarantees and Other Commitments (Tables)	9 Months Ended
	Sep. 30, 2021
Disclosure Off Balance Sheet Arrangements Guarantees And Other Commitments Additional Information [Abstract]
Summary Information Related to Commitments to Extend Credit (Excluding Letters of Credit)	The following table summarizes information related to our commitments to extend credit at September 30, 2021 and December 31, 2020: (Dollars in millions) September 30, 2021 December 31, 2020 Loan commitments available for funding: (1) $ 36,808 $ 28,975 Commercial and standby letters of credit (2) 3,451 3,007 Total unfunded credit commitments $ 40,259 $ 31,982 Allowance for unfunded credit commitments (3) 149 121 (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) Our allowance for credit losses for unfunded credit commitments includes an allowance for both our unfunded loan commitments and our letters of credit.
Summary of Commercial and Standby Letters of Credit	The table below summarizes our commercial and standby letters of credit at September 30, 2021. 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 millions) Expires in One Expires After Total Amount Maximum Amount Financial standby letters of credit $ 3,146 $ 107 $ 3,253 $ 3,253 Performance standby letters of credit 116 21 137 137 Commercial letters of credit 27 34 61 61 Total $ 3,289 $ 162 $ 3,451 $ 3,451
Total Capital Commitments, Unfunded Capital Commitments, and Ownership in Each Fund	The following table details our total capital commitments, unfunded capital commitments, and our ownership percentage in each fund at September 30, 2021: (Dollars in millions) SVBFG Capital Commitments SVBFG Unfunded SVBFG Ownership CP II, LP (1) $ 1 $ — 5.1 % Capital Preferred Return Fund, LP 13 — 20.0 Growth Partners, LP 25 1 33.0 Strategic Investors Fund, LP 15 1 12.6 Strategic Investors Fund II, LP 15 1 8.6 Strategic Investors Fund III, LP 15 1 5.9 Strategic Investors Fund IV, LP 12 2 5.0 Strategic Investors Fund V funds 1 — Various Other venture capital and private equity fund investments (equity method accounting) 11 3 Various Debt funds (equity method accounting) 59 — Various Other fund investments (2) 257 6 Various Total $ 424 $ 15 (1) Our ownership includes direct ownership of 1.3 percent and indirect ownership interest of 3.8 percent through our investment in Strategic Investors Fund II, LP. (2) Represents commitments to 159 funds (primarily venture capital funds) where our ownership interest is generally less than five percent of the voting interests of each such fund.

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value Hierarchy Tables Present Information about Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following fair value hierarchy table presents information about our assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2021: (Dollars in millions) Level 1 Level 2 Level 3 Balance at September 30, 2021 Assets: AFS securities: U.S. Treasury securities $ 9,277 $ — $ — $ 9,277 U.S. agency debentures — 208 — 208 Foreign government debt securities 15 — — 15 Residential MBS: Agency-issued MBS — 10,784 — 10,784 Agency-issued CMO — fixed rate — 1,138 — 1,138 Agency-issued CMBS — 1,562 — 1,562 Total AFS securities 9,292 13,692 — 22,984 Non-marketable and other equity securities (fair value accounting): Non-marketable securities: Venture capital and private equity fund investments measured at net asset value — — — 362 Other equity securities in public companies 43 115 — 158 Total non-marketable and other equity securities (fair value accounting) 43 115 — 520 Other assets: Foreign exchange forward, swap and option contracts — 185 — 185 Equity warrant assets — 9 265 274 Interest rate swaps — 14 — 14 Client interest rate derivatives — 115 — 115 Other assets 8 — — 8 Total assets $ 9,343 $ 14,130 $ 265 $ 24,100 Liabilities: Foreign exchange forward, swap and option contracts $ — $ 158 $ — $ 158 Client interest rate derivatives — 116 — 116 Other liabilities 8 — — 8 Total liabilities $ 8 $ 274 $ — $ 282 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, 2020: (Dollars in millions) Level 1 Level 2 Level 3 Balance at December 31, 2020 Assets: AFS securities: U.S. Treasury securities $ 4,470 $ — $ — $ 4,470 U.S. agency debentures — 237 — 237 Foreign government debt securities 24 — — 24 Residential MBS: Agency-issued MBS — 13,503 — 13,503 Agency-issued CMO—fixed rate — 8,107 — 8,107 Agency-issued CMBS — 4,572 — 4,572 Total AFS securities 4,494 26,419 — 30,913 Non-marketable and other equity securities (fair value accounting): Non-marketable securities: Venture capital and private equity fund investments measured at net asset value — — — 274 Other equity securities in public companies 43 238 — 281 Total non-marketable and other equity securities (fair value accounting) 43 238 — 555 Other assets: Foreign exchange forward and option contracts — 217 — 217 Equity warrant assets — 11 192 203 Client interest rate derivatives — 68 — 68 Total assets $ 4,537 $ 26,953 $ 192 $ 31,956 Liabilities: Foreign exchange forward and option contracts $ — $ 210 $ — $ 210 Client interest rate derivatives — 27 — 27 Total liabilities $ — $ 237 $ — $ 237
Additional Information about Level 3 Assets Measured at Fair Value on a Recurring Basis	The following table presents additional information about Level 3 assets measured at fair value on a recurring basis for the three and nine months ended September 30, 2021 and 2020: (Dollars in millions) Beginning Balance Total Net Gains Included in Net Income (1) Sales/Exits Issuances Transfers Out of Level 3 Ending Balance Three months ended September 30, 2021 Equity warrant assets $ 257 $ 149 $ (146) $ 6 $ (1) $ 265 Three months ended September 30, 2020 Equity warrant assets 165 53 (29) 5 (1) 193 Nine months ended September 30, 2021 Equity warrant assets 192 490 (431) 18 (4) 265 Nine months ended September 30, 2020 Equity warrant assets 161 91 (74) 16 (1) 193 (1) Realized and unrealized gains (losses) are recorded in the line item “Gains on equity warrant assets, net," a component of noninterest income.
Unrealized Gains Included in Earnings Attributable to Level 3 Assets Held	The following table presents the amount of net unrealized gains and losses included in earnings attributable to Level 3 assets still held at September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (Dollars in millions) 2021 2020 2021 2020 Other assets: Equity warrant assets (1) $ 21 $ 26 $ 113 $ 33 Total unrealized gains, net $ 21 $ 26 $ 113 $ 33 (1) Unrealized gains and losses are recorded in the line item “Gains on equity warrant assets, net, " a component of noninterest income.
Quantitative Information About Significant Unobservable Inputs	The following table presents quantitative information about the significant unobservable inputs used for certain of our Level 3 fair value measurements at September 30, 2021 and December 31, 2020. 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 millions) Fair value Valuation Technique Significant Unobservable Inputs Input Range Weighted September 30, 2021: Equity warrant assets (public portfolio) $ 4 Black-Scholes option pricing model Volatility 28.2% - 56.9% 50.4 % Risk-Free interest rate 0.04- 1.5 1.2 Sales restrictions discount (1) 10.0 - 20.0 16.7 Equity warrant assets (private portfolio) 261 Black-Scholes option pricing model Volatility 25.8 - 56.9 43.9 Risk-Free interest rate 0.04 - 1.16 0.4 Marketability discount (2) 20.8 20.8 Remaining life assumption (3) 40.0 40.0 December 31, 2020: Equity warrant assets (public portfolio) 1 Black-Scholes option pricing model Volatility 46.0% - 56.8% 49.1 % Risk-Free interest rate 0.3- 0.9 0.6 Sales restrictions discount (1) 10.0 - 20.0 10.2 Equity warrant assets (private portfolio) 191 Black-Scholes option pricing model Volatility 24.4 - 56.8 43.2 Risk-Free interest rate 0.01 - 0.52 0.1 Marketability discount (2) 20.6 20.6 Remaining life assumption (3) 40.0 40.0 (1) 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 (2) Our marketability discount is applied to all private company warrants to account for a general lack of liquidity due to the private nature of the associated underlying company. The quantitative measure used is based upon various option-pricing models. On a quarterly basis, a sensitivity analysis is performed on our marketability discount.
Summary of Estimated Fair Values of Financial Instruments Not Carried at Fair Value	The following fair value hierarchy table presents the estimated fair values of our financial instruments that are not carried at fair value at September 30, 2021 and December 31, 2020: Estimated Fair Value (Dollars in millions) Carrying Amount Total Level 1 Level 2 Level 3 September 30, 2021: Financial assets: Cash and cash equivalents $ 18,940 $ 18,940 $ 18,940 $ — $ — HTM securities 82,365 81,995 — 81,995 — Non-marketable securities not measured at net asset value 350 350 — — 350 Non-marketable securities measured at net asset value 692 692 — — — Net loans 61,089 62,489 — — 62,489 FHLB and Federal Reserve Bank stock 107 107 — — 107 Financial liabilities: Short-term borrowings 97 97 — 97 — Non-maturity deposits (1) 169,833 169,833 169,833 — — Time deposits 1,349 1,350 — 1,350 — 3.50% Senior Notes 349 376 — 376 — 3.125% Senior Notes 496 535 — 535 — 1.80% Senior Notes 495 481 — 481 — 2.10% Senior Notes 496 505 — 505 — Junior subordinated debentures 90 86 — 86 — Off-balance sheet financial assets: Commitments to extend credit — 45 — — 45 December 31, 2020: Financial assets: Cash and cash equivalents $ 17,675 $ 17,675 $ 17,675 $ — $ — HTM securities 16,592 17,217 — 17,217 — Non-marketable securities not measured at net asset value 241 241 — — 241 Non-marketable securities measured at net asset value 390 390 — — — Net loans 44,734 45,324 — — 45,324 FHLB and Federal Reserve Bank stock 61 61 — — 61 Financial liabilities: Short-term borrowings 21 21 — 21 — Non-maturity deposits (1) 101,294 101,294 101,294 — — Time deposits 688 502 — 502 — 3.50% Senior Notes 349 383 — 383 — 3.125% Senior Notes 495 564 — 564 — Off-balance sheet financial assets: Commitments to extend credit — 37 — — 37 (1) Includes noninterest-bearing demand deposits, interest-bearing checking accounts, money market accounts and interest-bearing sweep deposits.
Summary of Estimated Fair Values of Investments and Remaining Unfunded Commitments for Each Major Category of Investments	The following table is a summary of the estimated fair values of these investments and remaining unfunded commitments for each major category of these investments as of September 30, 2021: (Dollars in millions) Carrying Amount Fair Value Unfunded Commitments Non-marketable securities (fair value accounting): Venture capital and private equity fund investments (1) $ 361 $ 361 $ 9 Non-marketable securities (equity method accounting): Venture capital and private equity fund investments (2) 656 656 7 Debt funds (2) 5 5 — Other investments (2) 35 35 1 Total $ 1,057 $ 1,057 $ 17 (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 $102 million and $2 million, respectively, attributable to noncontrolling interests. It is estimated that we will receive distributions from the fund investments over the next 10 to 13 years, depending on the age of the funds and any potential extensions of terms of the funds. (2) Venture capital and private equity fund investments, debt funds, and other fund investments within non-marketable securities (equity method accounting) include funds that invest in or lend money to primarily U.S. and global technology and life science/healthcare companies. It is estimated that we will receive distributions from the funds over the next 5 to 8 years, depending on the age of the funds and any potential extensions of the terms of the funds.

Basis of Presentation (Details)

Basis of Presentation (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)portfolio_segmentclass_financing_receivable
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of portfolio segments | portfolio_segment	8
Number of classes of financing receivables | class_financing_receivable	11
Significant Accounting Policies [Line Items]
Risk-based segments, revenue threshold of subcategories	$ 5
Lower Limit | Investor dependent | Growth stage | Mid stage
Significant Accounting Policies [Line Items]
Risk-based segments, revenue threshold of subcategories	5
Lower Limit | Investor dependent | Growth stage | Later stage
Significant Accounting Policies [Line Items]
Risk-based segments, revenue threshold of subcategories	$ 15
Lower Limit | Cash flow dependent and innovation C&I (Commercial and Industrial) | Cash flow dependent - SLBO
Significant Accounting Policies [Line Items]
Sponsor equity contribution, percentage of acquisition price	50.00%
Upper Limit | Investor dependent | Growth stage | Mid stage
Significant Accounting Policies [Line Items]
Risk-based segments, revenue threshold of subcategories	$ 15

Business Combinations and Ass_3

Business Combinations and Asset Acquisitions - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	Jul. 01, 2021	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill		$ 344		$ 344	$ 143
Boston Private
Business Acquisition [Line Items]
Percentage of voting equity interests acquired	100.00%
Consideration transferred in acquisition	$ 1,234
Cash paid for each share of Boston Private common stock	$ 2.10
Number of shares of SIVB common stock that each share of Boston Private common stock was converted	0.0228
Shares of common stock issued for acquisition	1,900,000
Additional number of SIVB shares registered issuable upon the exercise, vesting or settlement of converted legacy Boston Private equity awards	99,000
Intangible assets	$ 104
Goodwill	201
Net loans	7,217
Purchase price of PCD loans	$ 1,389
Acquisition-related expenses		$ 9	$ 6	$ 22

Business Combination - Allocati

Business Combination - Allocation of Purchase Price (Details) - USD ($) $ in Millions	Jul. 01, 2021	Sep. 30, 2021
Business Acquisition [Line Items]
Goodwill		$ 201
Boston Private
Business Acquisition [Line Items]
Cash paid	$ 174
Share-based consideration	1,050
Replacement equity awards	10
Total purchase consideration	1,234
Fair value of net assets acquired	1,033
Goodwill	$ 201

Business Combination - Assets A

Business Combination - Assets Acquired and Liabilities Assumed (Details) - Boston Private $ in Millions	Jul. 01, 2021USD ($)
Business Acquisition [Line Items]
Cash and cash equivalents	$ 1,290
Investment securities	1,429
Net loans	7,217
Premises and equipment	39
Intangible assets	104
Right-of-use assets	107
Other assets	284
Total assets acquired	10,470
Deposits	8,983
Borrowings	132
Lease liabilities	103
Other liabilities	219
Total liabilities assumed	9,437
Fair value of net assets acquired	$ 1,033

Business Combination - Fair Val

Business Combination - Fair Value and Estimated Useful Lives of the Other Intangible Assets (Details) - Boston Private $ in Millions	Jul. 01, 2021USD ($)
Business Acquisition [Line Items]
Estimated Fair Value	$ 104
Customer relationships
Business Acquisition [Line Items]
Estimated Fair Value	$ 85
Weighted Average Estimated Useful Life - in Years	20 years
Other
Business Acquisition [Line Items]
Estimated Fair Value	$ 19
Weighted Average Estimated Useful Life - in Years	6 years

Business Combination - Purchase

Business Combination - Purchase Credit Deteriorated Loans (Details) - Boston Private $ in Millions	Jul. 01, 2021USD ($)
Business Acquisition [Line Items]
Net loans acquired	$ 7,217
Par value of PCD loans	1,368
PCD ACL at acquisition	(22)
Non-credit premium on PCD loans	43
Purchase price of PCD loans	$ 1,389

Stockholders' Equity and EPS -

Stockholders' Equity and EPS - Reclassification out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gains on investment securities, net	$ 189	$ 190	$ 661	$ 271
Related tax benefit	(149)	(162)	(509)	(300)
Net interest income	852	528	2,240	1,565
Total reclassification adjustment for gains included in net income, net of tax	365	442	1,399	803
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassification adjustment for gains included in net income, net of tax	(12)	(11)	(34)	(69)
Accumulated Net Investment Gain (Loss) Attributable to Parent | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gains on investment securities, net	0	0	0	(61)
Related tax benefit	0	0	0	17
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Related tax benefit	(4)	(5)	13	9
Net interest income	$ (16)	$ (16)	$ (47)	$ (34)

Stockholders' Equity and EPS _2

Stockholders' Equity and EPS - Activity Related to Net Gains on Cash Flow Hedges in AOCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge gains expected to reclassified out of AOCI over next 12 months	$ 59
Balance, beginning of period, net of tax	11,967	$ 7,468	$ 8,433	$ 6,621
Balance, end of period, net of tax	14,669	7,967	14,669	7,967
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period, net of tax	107	153	129	(2)
Net increase in fair value, net of tax	0	0	0	168
Net realized gain reclassified to net income, net of tax	(12)	(12)	(34)	(25)
Balance, end of period, net of tax	$ 95	$ 141	$ 95	$ 141

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 Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator:
Net income available to common stockholders	$ 365	$ 442	$ 1,399	$ 803
Denominator:
Weighted average common shares outstanding-basic (in shares)	57,723	51,773	54,772	51,640
Weighted average common shares outstanding—diluted (in shares)	58,521	52,146	55,617	51,950
Earnings per common share:
Basic (dollars per share)	$ 6.33	$ 8.53	$ 25.54	$ 15.55
Diluted (dollars per share)	$ 6.24	$ 8.47	$ 25.16	$ 15.46
Stock options and ESPP
Denominator:
Weighted average effect of dilutive securities (in shares)	268	141	278	147
Restricted stock units and awards
Denominator:
Weighted average effect of dilutive securities (in shares)	530	232	567	163

Stockholders' Equity and EPS _4

Stockholders' Equity and EPS - Common Shares Excluded from Diluted EPS Calculation as They Were Deemed to be Anti-Dilutive (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from diluted earnings per share calculation	56	374	31	352
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from diluted earnings per share calculation	56	319	31	269
Restricted stock units and awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from diluted earnings per share calculation	0	55	0	83

Stockholders' Equity and EPS _5

Stockholders' Equity and EPS - Common Stock (Details) - USD ($) $ / shares in Units, $ in Millions	Aug. 12, 2021	Jul. 01, 2021	Apr. 14, 2021	Mar. 22, 2021	Sep. 30, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Common stock, shares, issued					58,677,483	51,888,463
Boston Private
Class of Stock [Line Items]
Number of shares of SIVB common stock that each share of Boston Private common stock was converted		0.0228
Common Stock
Class of Stock [Line Items]
Common stock, shares, issued	2,227,000		300,000	2,000,000
Shares issued, price per share	$ 564			$ 500
Net proceeds after deducting discounts and commissions	$ 1,200		$ 146	$ 972
Common Stock | Boston Private
Class of Stock [Line Items]
Issuance of common stock for the acquisition of Boston Private (in shares)		1,887,981
Number of shares of SIVB common stock that each share of Boston Private common stock was converted		0.0228

Stockholders' Equity and EPS _6

Stockholders' Equity and EPS - Preferred Stock (Details)	May 13, 2021$ / sharesshares	Feb. 02, 2021$ / sharesshares	Dec. 09, 2019$ / sharesshares	Sep. 30, 2021$ / shares	Dec. 31, 2020$ / shares
Class of Stock [Line Items]
Preferred stock, par value, in usd per share				$ 0.001	$ 0.001
Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate, percentage			5.25%
Preferred stock, depositary shares issued | shares			14,000,000
Preferred stock, depository share ownership interest				0.025
Preferred stock, par value, in usd per share			$ 0.001	$ 0.001
Preferred stock, liquidation preference per share, in usd per share			1,000
Preferred stock, liquidation preference per depositary share			$ 25
Series B Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate, percentage		4.10%
Preferred stock, depositary shares issued | shares		750,000
Preferred stock, depository share ownership interest				0.01
Preferred stock, par value, in usd per share		$ 0.001		$ 0.001
Preferred stock, liquidation preference per share, in usd per share		100,000
Preferred stock, liquidation preference per depositary share		$ 1,000
Preferred stock, period dividend rate reset using the ten-year treasury rate		10 years
Preferred stock, number of business days prior to each reset date dividend rate calculated		3 days
Preferred stock, number of days used for average yields on actively traded US Treasury securities		5 days
Preferred stock, margin used for dividend rate at reset		3.064%
Series C Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate, percentage	4.00%
Preferred stock, depositary shares issued | shares	1,000,000
Preferred stock, depository share ownership interest				0.01
Preferred stock, par value, in usd per share	$ 0.001			$ 0.001
Preferred stock, liquidation preference per share, in usd per share	100,000
Preferred stock, liquidation preference per depositary share	$ 1,000	$ 1,000
Preferred stock, number of business days prior to each reset date dividend rate calculated		3 days
Preferred stock, number of days used for average yields on actively traded US Treasury securities	5 days
Preferred stock, period dividend rate reset using the five-year treasury rate	5 years
Preferred stock, margin used for dividend rate at reset	3.202%

Stockholders' Equity and EPS _7

Stockholders' Equity and EPS - Preferred Stock Summary (Details) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)$ / sharesshares	May 13, 2021$ / shares	Feb. 02, 2021$ / shares	Dec. 31, 2020USD ($)$ / sharesshares	Dec. 09, 2019$ / shares
Class of Stock [Line Items]
Carrying value | $	$ 2,064			$ 340
Shares issued and outstanding | shares	367,500			350,000
Par Value	$ 0.001			$ 0.001
Preferred Stock, Series A
Class of Stock [Line Items]
Amount outstanding | $	$ 350
Carrying value | $	$ 340
Shares issued and outstanding | shares	350,000
Par Value	$ 0.001				$ 0.001
Preferred stock, depository share ownership interest	0.025
Preferred stock, liquidation preference per depositary share					$ 25
2021 dividends paid per depository share, usd per share	$ 0.98
Series B Preferred Stock
Class of Stock [Line Items]
Amount outstanding | $	$ 750
Carrying value | $	$ 739
Shares issued and outstanding | shares	7,500
Par Value	$ 0.001		$ 0.001
Preferred stock, depository share ownership interest	0.01
Preferred stock, liquidation preference per depositary share			1,000
2021 dividends paid per depository share, usd per share	$ 21.98
Series C Preferred Stock
Class of Stock [Line Items]
Amount outstanding | $	$ 1,000
Carrying value | $	$ 985
Shares issued and outstanding | shares	10,000
Par Value	$ 0.001	$ 0.001
Preferred stock, depository share ownership interest	0.01
Preferred stock, liquidation preference per depositary share		$ 1,000	$ 1,000
2021 dividends paid per depository share, usd per share	$ 10.22

Stockholders' Equity and EPS _8

Stockholders' Equity and EPS - QTD Stockholders' Equity (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Stockholders Equity Note [Line Items]
Balance, beginning of period, net of tax	$ 11,967	$ 7,468	$ 8,433	$ 6,621
Common stock issued under employee benefit plans, net of restricted stock cancellations	2	4	(1)	18
Net income	475	474	1,665	855
Capital calls and distributions, net	(19)	(3)	(70)	(17)
Other comprehensive income, net of tax	(77)	6
Share-based compensation, net	38	22	93	61
Dividends on preferred stock	(22)	(4)	(40)	(12)
Balance, end of period, net of tax	14,669	7,967	14,669	7,967
Common Stock
Stockholders Equity Note [Line Items]
Issuance of stock	1,245		2,363
Issuance of common stock for the acquisition of Boston Private	1,060		1,060
Noncumulative Preferred Stock
Stockholders Equity Note [Line Items]
Issuance of stock			1,724
Preferred Stock
Stockholders Equity Note [Line Items]
Balance, beginning of period, net of tax	2,064	340	340	340
Balance, end of period, net of tax	$ 2,064	$ 340	$ 2,064	$ 340
Preferred Stock | Noncumulative Preferred Stock
Stockholders Equity Note [Line Items]
Issuance of stock (in shares)			1,724,000,000
Common Stock
Stockholders Equity Note [Line Items]
Balance (in shares)	54,530,307	51,740,714	51,888,463	51,655,607
Balance, beginning of period, net of tax	$ 0	$ 0	$ 0	$ 0
Common stock issued under employee benefit plans, net of restricted stock cancellations (in shares)	32,195	47,258	374,039	376,588
Common stock issued under employee benefit plans, net of restricted stock cancellations			$ 0	$ 0
Balance (in shares)	58,677,483	51,787,972	58,677,483	51,787,972
Balance, end of period, net of tax	$ 0	$ 0	$ 0	$ 0
Common Stock | Common Stock
Stockholders Equity Note [Line Items]
Issuance of stock (in shares)	2,227,000		4,527,000
Issuance of stock	$ 0		$ 0
Issuance of common stock for the acquisition of Boston Private (in shares)	1,887,981		1,887,981
Issuance of common stock for the acquisition of Boston Private	$ 0		$ 0
Additional Paid-in Capital
Stockholders Equity Note [Line Items]
Balance, beginning of period, net of tax	2,755	1,523	1,585	1,470
Common stock issued under employee benefit plans, net of restricted stock cancellations	2	4	(1)	18
Share-based compensation, net	38	22	93	61
Balance, end of period, net of tax	5,100	1,549	5,100	1,549
Additional Paid-in Capital | Common Stock
Stockholders Equity Note [Line Items]
Issuance of stock	1,245		2,363
Issuance of common stock for the acquisition of Boston Private	1,060		1,060
Retained Earnings
Stockholders Equity Note [Line Items]
Balance, beginning of period, net of tax	6,706	4,842	5,672	4,576
Net income	387	446	1,439	815
Dividends on preferred stock	(22)	(4)	40	(12)
Balance, end of period, net of tax	7,071	5,284	7,071	5,284
Accumulated Other Comprehensive Income
Stockholders Equity Note [Line Items]
Balance, beginning of period, net of tax	142	614	623	84
Other comprehensive income, net of tax		6
Balance, end of period, net of tax	65	620	65	620
Total SVBFG Stockholders’ Equity
Stockholders Equity Note [Line Items]
Balance, beginning of period, net of tax	11,667	7,319	8,220	6,470
Common stock issued under employee benefit plans, net of restricted stock cancellations	2	4	(1)	18
Net income	387	446	1,439	815
Other comprehensive income, net of tax	(77)	6
Share-based compensation, net	38	22	93	61
Dividends on preferred stock	(22)	(4)	(40)	(12)
Balance, end of period, net of tax	14,300	7,793	14,300	7,793
Total SVBFG Stockholders’ Equity | Common Stock
Stockholders Equity Note [Line Items]
Issuance of stock	1,245		2,363
Issuance of common stock for the acquisition of Boston Private	1,060		1,060
Total SVBFG Stockholders’ Equity | Noncumulative Preferred Stock
Stockholders Equity Note [Line Items]
Issuance of stock			1,724
Noncontrolling Interests
Stockholders Equity Note [Line Items]
Balance, beginning of period, net of tax	300	149	213	151
Net income	88	28	226	40
Capital calls and distributions, net	(19)	(3)	(70)	(17)
Balance, end of period, net of tax	$ 369	$ 174	$ 369	$ 174

Variable Interest Entities - Ca

Variable Interest Entities - Carrying Amounts and Classification of Significant Variable Interests (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 18,940	$ 17,675
Non-marketable and other equity securities	2,485	1,802
Accrued interest receivable and other assets	2,074	3,206
Total assets	190,996	115,511
Other liabilities	2,733	3,972
Long-term debt	1,925	844
Total liabilities	176,327	107,078
Maximum exposure to loss in unconsolidated VIEs	1,216	859
Investments in qualified affordable housing projects, net	920	616
Consolidated
Variable Interest Entity [Line Items]
Cash and cash equivalents	8	15
Non-marketable and other equity securities	762	422
Accrued interest receivable and other assets	24	1
Total assets	794	438
Other liabilities	17	1
Long-term debt	0
Total liabilities	17	1
Maximum exposure to loss in unconsolidated VIEs	777
Unconsolidated
Variable Interest Entity [Line Items]
Cash and cash equivalents	0	0
Non-marketable and other equity securities	1,216	859
Accrued interest receivable and other assets	6	0
Total assets	1,222	859
Other liabilities	471	370
Long-term debt	90
Total liabilities	561	370
Non-marketable securities | Unconsolidated
Variable Interest Entity [Line Items]
Maximum exposure to loss in unconsolidated VIEs	$ 1,216	$ 859

Variable Interest Entities - Ad

Variable Interest Entities - Additional Information (Details) $ in Millions	Sep. 30, 2021USD ($)entity	Dec. 31, 2020USD ($)
Investments In Variable Interest Entities [Abstract]
Number of consolidated entities | entity	3
Variable Interest Entity [Line Items]
Maximum exposure to loss in unconsolidated VIEs	$ 1,216	$ 859
Total assets	190,996	115,511
Trust preferred securities	90
Consolidated
Variable Interest Entity [Line Items]
Maximum exposure to loss in unconsolidated VIEs	777
Total assets	794	438
Unconsolidated
Variable Interest Entity [Line Items]
Total assets	$ 1,222	$ 859

Cash and Cash Equivalents - Sum

Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Cash and Cash Equivalents [Abstract]
Cash and due from banks	$ 1,185	$ 723
Interest bearing deposits with the Federal Reserve Bank	12,406	13,700
Interest bearing deposits with other institutions	5,106	3,025
Securities purchased under agreements to resell	216	227
Other short-term investment securities	27	0
Total cash and cash equivalents	$ 18,940	$ 17,675

Cash and Cash Equivalents - S_2

Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Footnote Information) (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Cash and Cash Equivalents [Abstract]
Fair value of securities purchased under agreements to resell	$ 221,000,000	$ 232,000,000
Securities received as collateral, amount repledged and sold	$ 0	$ 0

Investment Securities - Compone

Investment Securities - Components of Available-for-Sale Investment Securities Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 22,919,000	$ 30,245,000
Unrealized Gains	286,000	683,000
Unrealized Losses	(221,000)	(15,000)
Carrying value	22,984,000	30,913,000
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	9,122,000	4,198,000
Unrealized Gains	170,000	272,000
Unrealized Losses	(15,000)	0
Carrying value	9,277,000	4,470,000
U.S. agency debentures
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	212,000	234,000
Unrealized Gains	0	4,000
Unrealized Losses	(4,000)	(1,000)
Carrying value	208,000	237,000
Foreign government debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	15,000	24,000
Unrealized Gains	0	0
Unrealized Losses	0	0
Carrying value	15,000	24,000
Residential mortgage-backed securities | Agency-issued mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	10,902,000	13,271,000
Unrealized Gains	69,000	233,000
Unrealized Losses	(187,000)	(1,000)
Carrying value	10,784,000	13,503,000
Residential mortgage-backed securities | Agency-issued collateralized mortgage obligations—fixed rate
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,129,000	8,077,000
Unrealized Gains	11,000	40,000
Unrealized Losses	(2,000)	(10,000)
Carrying value	1,138,000	8,107,000
Agency-issued commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,539,000	4,441,000
Unrealized Gains	36,000	134,000
Unrealized Losses	(13,000)	(3,000)
Carrying value	$ 1,562,000	$ 4,572,000

Investment Securities - Activit

Investment Securities - Activity of Available-for-Sale Securities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Investments, Debt and Equity Securities [Abstract]
Sales proceeds	$ 168	$ 0	$ 168	$ 2,654
Gross realized gains (less than $1 million for 3 and 9 months ended 9/30/2021)	0	0	0	61
Gross realized losses (less than $1 million for 3 and 9 months ended 9/30/2021)	0	0	0	0
Net realized gains	$ 0	$ 0	$ 0	$ 61

Investment Securities - Summary

Investment Securities - Summary of Unrealized Losses on Available-for-Sale Securities (Details) $ in Millions	Sep. 30, 2021USD ($)Investment	Dec. 31, 2020USD ($)Investment
Debt Securities, Available-for-sale [Line Items]
Number of investments in unrealized loss position | Investment	381	93
Number of investments with unrealized losses greater than 12 months | Investment	2	0
Fair Value of Investments, Less than 12 months	$ 14,587	$ 4,285
Unrealized Losses, Less than 12 months (less than $1 million at December 31, 2020 for U.S. Treasury AFS)	217	15
Fair Value of Investments, 12 months or longer	81	0
Unrealized Losses, 12 months or longer	4	0
Fair Value of Investments	14,668	4,285
Unrealized Losses	221	15
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Fair Value of Investments, Less than 12 months	5,172	60
Unrealized Losses, Less than 12 months (less than $1 million at December 31, 2020 for U.S. Treasury AFS)	15	0
Fair Value of Investments, 12 months or longer	0	0
Unrealized Losses, 12 months or longer	0	0
Fair Value of Investments	5,172	60
Unrealized Losses	15	0
U.S. agency debentures
Debt Securities, Available-for-sale [Line Items]
Fair Value of Investments, Less than 12 months	112	133
Unrealized Losses, Less than 12 months (less than $1 million at December 31, 2020 for U.S. Treasury AFS)	4	1
Fair Value of Investments, 12 months or longer	0	0
Unrealized Losses, 12 months or longer	0	0
Fair Value of Investments	112	133
Unrealized Losses	4	1
Residential mortgage-backed securities | Agency-issued mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Fair Value of Investments, Less than 12 months	8,376	904
Unrealized Losses, Less than 12 months (less than $1 million at December 31, 2020 for U.S. Treasury AFS)	187	1
Fair Value of Investments, 12 months or longer	0	0
Unrealized Losses, 12 months or longer	0	0
Fair Value of Investments	8,376	904
Unrealized Losses	187	1
Residential mortgage-backed securities | Agency-issued collateralized mortgage obligations—fixed rate
Debt Securities, Available-for-sale [Line Items]
Fair Value of Investments, Less than 12 months	232	2,199
Unrealized Losses, Less than 12 months (less than $1 million at December 31, 2020 for U.S. Treasury AFS)	2	10
Fair Value of Investments, 12 months or longer	0	0
Unrealized Losses, 12 months or longer	0	0
Fair Value of Investments	232	2,199
Unrealized Losses	2	10
Agency-issued commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Fair Value of Investments, Less than 12 months	695	989
Unrealized Losses, Less than 12 months (less than $1 million at December 31, 2020 for U.S. Treasury AFS)	9	3
Fair Value of Investments, 12 months or longer	81	0
Unrealized Losses, 12 months or longer	4	0
Fair Value of Investments	776	989
Unrealized Losses	$ 13	$ 3

Investment Securities - Summa_2

Investment Securities - Summary of Remaining Contractual Principal Maturities for Available-for-Sale Securities (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	$ 22,984	$ 30,913
One Year or Less	146
After One Year to Five Years	9,290
After Five Years to Ten Years	1,626
After Ten Years	11,922
U.S. treasury securities
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	9,277	4,470
One Year or Less	40
After One Year to Five Years	9,237
After Five Years to Ten Years	0
After Ten Years	0
U.S. agency debentures
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	208	237
One Year or Less	91
After One Year to Five Years	37
After Five Years to Ten Years	80
After Ten Years	0
Foreign government debt securities
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	15	24
One Year or Less	15
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
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	10,784	13,503
One Year or Less	0
After One Year to Five Years	0
After Five Years to Ten Years	0
After Ten Years	10,784
Residential mortgage-backed securities | Agency-issued collateralized mortgage obligations—fixed rate
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	1,138	8,107
One Year or Less	0
After One Year to Five Years	0
After Five Years to Ten Years	0
After Ten Years	1,138
Agency-issued commercial mortgage-backed securities
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Total	1,562	$ 4,572
One Year or Less	0
After One Year to Five Years	16
After Five Years to Ten Years	1,546
After Ten Years	$ 0
Available-for-sale Securities | Lower Limit
Debt Securities, Available-for-sale [Line Items]
Mortgage-backed securities contractual maturities (in years)	10 years
Available-for-sale Securities | Upper Limit
Debt Securities, Available-for-sale [Line Items]
Mortgage-backed securities contractual maturities (in years)	30 years

Investment Securities - Compo_2

Investment Securities - Components of Held-to-Maturity Investment Securities (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Schedule of Held-to-maturity Securities [Line Items]
Available-for-sale securities, transferred to held-to-maturity Securities	$ 8,800,000
Available-for-sale securities, transferred to held-to-maturity securities, unrealized gain (loss)	132,000
Amortized Cost	82,371,000		$ 16,592,000
Unrealized Gains	412,000		628,000
Unrealized Losses	(788,000)		(3,000)
Fair Value	81,995,000		17,217,000
Allowance for Credit Losses	6,000	$ 5,000	0	$ 1,000	$ 1,000	$ 1,000
U.S. agency debentures
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	609,000		402,000
Unrealized Gains	14,000		19,000
Unrealized Losses	(1,000)		0
Fair Value	622,000		421,000
Allowance for Credit Losses	0		0
Residential mortgage-backed securities | Agency-issued mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	52,874,000		7,740,000
Unrealized Gains	167,000		240,000
Unrealized Losses	(515,000)		(2,000)
Fair Value	52,526,000		7,978,000
Allowance for Credit Losses	0		0
Residential mortgage-backed securities | Agency-issued collateralized mortgage obligations—fixed rate
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	7,410,000		1,735,000
Unrealized Gains	19,000		23,000
Unrealized Losses	(71,000)		0
Fair Value	7,358,000		1,758,000
Allowance for Credit Losses	0		0
Residential mortgage-backed securities | Agency-issued collateralized mortgage obligations—variable rate
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	109,000		137,000
Unrealized Gains	1,000		1,000
Unrealized Losses	0		0
Fair Value	110,000		138,000
Allowance for Credit Losses	0		0
Agency-issued commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	14,351,000		2,943,000
Unrealized Gains	58,000		124,000
Unrealized Losses	(120,000)		0
Fair Value	14,289,000		3,067,000
Allowance for Credit Losses	0		0
Municipal bonds and notes
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	6,485,000		3,635,000
Unrealized Gains	151,000		221,000
Unrealized Losses	(78,000)		(1,000)
Fair Value	6,558,000		3,855,000
Allowance for Credit Losses	1,000		0
Corporate bonds
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	533,000		$ 0
Unrealized Gains	2,000
Unrealized Losses	(3,000)
Fair Value	532,000
Allowance for Credit Losses	$ 5,000

Investment Securities - Allowan

Investment Securities - Allowance for Credit Losses for HTM Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Beginning Balance / Day One Impact of adopting ASC 326	$ 5,000	$ 1,000	$ 0	$ 1,000
Provision for Credit Losses (less than $1 million for 3 months ended September 30, 2021)	1,000	1,000	6,000	1,000
Ending Balance	6,000	1,000	6,000	1,000
Accrued interest receivable and other assets | Held-to-maturity Securities
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Accrued interest receivable	179,000		179,000		$ 55,000
Municipal bonds and notes
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Beginning Balance / Day One Impact of adopting ASC 326			0
Ending Balance	1,000		1,000
Corporate bonds
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Ending Balance	$ 5,000		$ 5,000
Cumulative adjustment for the adoption of amendment
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Beginning Balance / Day One Impact of adopting ASC 326		$ 1,000		$ 1,000

Investment Securities - Credit

Investment Securities - Credit Quality Indicators (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Held-to-maturity securities, amortized cost	$ 82,371	$ 16,592
Municipal bonds and notes
Financing Receivable, Credit Quality Indicator [Line Items]
Held-to-maturity securities, amortized cost	6,485	3,635
Municipal bonds and notes | Aaa
Financing Receivable, Credit Quality Indicator [Line Items]
Held-to-maturity securities, amortized cost	3,422	2,070
Municipal bonds and notes | Aa1
Financing Receivable, Credit Quality Indicator [Line Items]
Held-to-maturity securities, amortized cost	1,883	1,145
Municipal bonds and notes | Aa2
Financing Receivable, Credit Quality Indicator [Line Items]
Held-to-maturity securities, amortized cost	981	420
Municipal bonds and notes | Aa3
Financing Receivable, Credit Quality Indicator [Line Items]
Held-to-maturity securities, amortized cost	172	0
Municipal bonds and notes | A1
Financing Receivable, Credit Quality Indicator [Line Items]
Held-to-maturity securities, amortized cost	27	0
Corporate bonds
Financing Receivable, Credit Quality Indicator [Line Items]
Held-to-maturity securities, amortized cost	533	0
Corporate bonds | Aa1
Financing Receivable, Credit Quality Indicator [Line Items]
Held-to-maturity securities, amortized cost	29	0
Corporate bonds | Aa2
Financing Receivable, Credit Quality Indicator [Line Items]
Held-to-maturity securities, amortized cost	27	0
Corporate bonds | Aa3
Financing Receivable, Credit Quality Indicator [Line Items]
Held-to-maturity securities, amortized cost	43	0
Corporate bonds | A1
Financing Receivable, Credit Quality Indicator [Line Items]
Held-to-maturity securities, amortized cost	210	0
Corporate bonds | A2
Financing Receivable, Credit Quality Indicator [Line Items]
Held-to-maturity securities, amortized cost	$ 224	$ 0

Investment Securities - Summa_3

Investment Securities - Summary of Remaining Contractual Principal Maturities for Held-to-Maturity Securities (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	$ 81,995,000	$ 17,217,000
U.S. agency debentures
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	622,000	421,000
Residential mortgage-backed securities | Agency-issued mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	52,526,000	7,978,000
Residential mortgage-backed securities | Agency-issued collateralized mortgage obligations—fixed rate
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	7,358,000	1,758,000
Residential mortgage-backed securities | Agency-issued collateralized mortgage obligations—variable rate
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	110,000	138,000
Agency-issued commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	14,289,000	3,067,000
Municipal bonds and notes
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	6,558,000	$ 3,855,000
After One Year to Five Years, Amortized Cost	157,000
After Five Years to Ten Years, Amortized Cost	973,000
Corporate bonds
Schedule of Held-to-maturity Securities [Line Items]
Fair Value	532,000
After One Year to Five Years, Amortized Cost	0
After Five Years to Ten Years, Amortized Cost	533,000
Held-to-maturity Securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	82,371,000
Fair Value	81,995,000
One Year or Less, Amortized Cost	54,000
One Year or Less, Fair Value	55,000
After One Year to Five Years, Amortized Cost	517,000
After One Year to Five Years, Fair Value	526,000
After Five Years to Ten Years, Amortized Cost	3,283,000
After Five Years to Ten Years, Fair Value	3,368,000
After Ten Years, Amortized Cost	78,517,000
After Ten Years, Fair Value	$ 78,046,000
Held-to-maturity Securities | Lower Limit
Schedule of Held-to-maturity Securities [Line Items]
Mortgage-backed securities contractual maturities (in years)	10 years
Held-to-maturity Securities | Upper Limit
Schedule of Held-to-maturity Securities [Line Items]
Mortgage-backed securities contractual maturities (in years)	30 years
Held-to-maturity Securities | U.S. agency debentures
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 609,000
Fair Value	622,000
One Year or Less, Amortized Cost	1,000
One Year or Less, Fair Value	1,000
After One Year to Five Years, Amortized Cost	133,000
After One Year to Five Years, Fair Value	137,000
After Five Years to Ten Years, Amortized Cost	475,000
After Five Years to Ten Years, Fair Value	484,000
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	52,874,000
Fair Value	52,526,000
One Year or Less, Amortized Cost	1,000
One Year or Less, Fair Value	2,000
After One Year to Five Years, Amortized Cost	7,000
After One Year to Five Years, Fair Value	8,000
After Five Years to Ten Years, Amortized Cost	407,000
After Five Years to Ten Years, Fair Value	419,000
After Ten Years, Amortized Cost	52,459,000
After Ten Years, Fair Value	52,097,000
Held-to-maturity Securities | Residential mortgage-backed securities | Agency-issued collateralized mortgage obligations—fixed rate
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	7,410,000
Fair Value	7,358,000
One Year or Less, Amortized Cost	0
One Year or Less, Fair Value	0
After One Year to Five Years, Amortized Cost	7,000
After One Year to Five Years, Fair Value	7,000
After Five Years to Ten Years, Amortized Cost	361,000
After Five Years to Ten Years, Fair Value	368,000
After Ten Years, Amortized Cost	7,042,000
After Ten Years, Fair Value	6,983,000
Held-to-maturity Securities | Residential mortgage-backed securities | Agency-issued collateralized mortgage obligations—variable rate
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	109,000
Fair Value	110,000
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	109,000
After Ten Years, Fair Value	110,000
Held-to-maturity Securities | Agency-issued commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	14,351,000
Fair Value	14,289,000
One Year or Less, Amortized Cost	0
One Year or Less, Fair Value	0
After One Year to Five Years, Amortized Cost	213,000
After One Year to Five Years, Fair Value	212,000
After Five Years to Ten Years, Amortized Cost	534,000
After Five Years to Ten Years, Fair Value	550,000
After Ten Years, Amortized Cost	13,604,000
After Ten Years, Fair Value	13,527,000
Held-to-maturity Securities | Municipal bonds and notes
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	6,485,000
Fair Value	6,558,000
One Year or Less, Amortized Cost	52,000
One Year or Less, Fair Value	52,000
After One Year to Five Years, Fair Value	162,000
After Five Years to Ten Years, Fair Value	1,015,000
After Ten Years, Amortized Cost	5,303,000
After Ten Years, Fair Value	5,329,000
Held-to-maturity Securities | Corporate bonds
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	533,000
Fair Value	532,000
One Year or Less, Amortized Cost	0
One Year or Less, Fair Value	0
After One Year to Five Years, Fair Value	0
After Five Years to Ten Years, Fair Value	532,000
After Ten Years, Amortized Cost	0
After Ten Years, Fair Value	$ 0

Investment Securities - Compo_3

Investment Securities - Components of Non-marketable and Other Equity Securities (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Investment Holdings [Line Items]
Investments in qualified affordable housing projects, net	$ 920	$ 616
Non-marketable and other equity securities	2,485	1,802
Fair value accounting | Consolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Nonmarketable securities	140	89
Fair value accounting | Unconsolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Nonmarketable securities	222	185
Fair value accounting | Equity securities
Investment Holdings [Line Items]
Other equity securities in public companies (fair value accounting)	158	281
Fair value accounting | Other investments
Investment Holdings [Line Items]
Nonmarketable securities	95	61
Equity method accounting | Consolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Nonmarketable securities	656	362
Equity method accounting | Unconsolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Nonmarketable securities	656	362
Equity method accounting | Debt funds
Investment Holdings [Line Items]
Nonmarketable securities	5	5
Equity method accounting | Other investments
Investment Holdings [Line Items]
Nonmarketable securities	$ 289	$ 203

Investment Securities - Summa_4

Investment Securities - Summary of Venture Capital and Private Equity Fund Investments Held by Consolidated Funds and Percentage Ownership (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair value accounting | Consolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Nonmarketable securities	$ 140	$ 89

Investment Securities - Non-mar

Investment Securities - Non-marketable and Other Securities Additional Information (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)Investment	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)Investment	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)Investment
Investment Holdings [Line Items]
Investments in qualified affordable housing projects, net	$ 920		$ 920		$ 616
Other liabilities	471		471		370
Tax credits and other tax benefits recognized	9	$ 15	63	$ 47
Amortization expense included in provision for income taxes	17	$ 10	48	$ 32
Fair value accounting | Unconsolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Nonmarketable securities	$ 222		$ 222		$ 185
Upper Limit
Investment Holdings [Line Items]
Percentage of ownership (less than 5%)	5.00%
Non-marketable securities | Fair value accounting | Unconsolidated venture capital and private equity fund investments
Investment Holdings [Line Items]
Number of investments | Investment	153		153		162

Investment Securities - Changes

Investment Securities - Changes to Carrying Amount of Other Investments without Readily Determinable Fair Value (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)
Investments, Debt and Equity Securities [Abstract]
September 30, 2021	$ 95
Year End Adjustments:
Impairment	0
Upward changes for observable prices	10
Downward changes for observable prices	(3)
Cumulative Adjustments
Impairment	(1)
Upward changes for observable prices	13
Downward changes for observable prices	$ (6)

Investment Securities - Carryin

Investment Securities - Carrying Value and Ownership Percentage of Investments (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Consolidated venture capital and private equity fund investments | Fair value accounting
Investment Holdings [Line Items]
Nonmarketable securities	$ 140		$ 89
Consolidated venture capital and private equity fund investments | Fair value accounting | Strategic Investors Fund, LP
Investment Holdings [Line Items]
Nonmarketable securities	5		5
Consolidated venture capital and private equity fund investments | Fair value accounting | Capital Preferred Return Fund, LP
Investment Holdings [Line Items]
Nonmarketable securities	64		50
Consolidated venture capital and private equity fund investments | Fair value accounting | Growth Partners, LP
Investment Holdings [Line Items]
Nonmarketable securities	71		34
Consolidated venture capital and private equity fund investments | Equity method accounting
Investment Holdings [Line Items]
Nonmarketable securities	656		362
Consolidated venture capital and private equity fund investments | Equity method accounting | Strategic Investors Fund II, LP
Investment Holdings [Line Items]
Nonmarketable securities	3		4
Consolidated venture capital and private equity fund investments | Equity method accounting | Strategic Investors Fund III, LP
Investment Holdings [Line Items]
Nonmarketable securities	29		16
Consolidated venture capital and private equity fund investments | Equity method accounting | Strategic Investors Fund IV, LP
Investment Holdings [Line Items]
Nonmarketable securities	38		25
Consolidated venture capital and private equity fund investments | Equity method accounting | Strategic Investors Fund V funds
Investment Holdings [Line Items]
Nonmarketable securities	92		67
Consolidated venture capital and private equity fund investments | Equity method accounting | CP II, LP
Investment Holdings [Line Items]
Nonmarketable securities	1		8
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	493		242
Debt funds | Equity method accounting
Investment Holdings [Line Items]
Nonmarketable securities	5		5
Debt funds | Equity method accounting | Gold Hill Capital 2008, LP
Investment Holdings [Line Items]
Nonmarketable securities	4		4
Debt funds | Equity method accounting | Other debt funds
Investment Holdings [Line Items]
Nonmarketable securities	1		1
Other investments | Fair value accounting
Investment Holdings [Line Items]
Nonmarketable securities	95		61
Other investments | Equity method accounting
Investment Holdings [Line Items]
Nonmarketable securities	289		203
Other investments | Equity method accounting | SPD Silicon Valley Bank Co., Ltd.
Investment Holdings [Line Items]
Nonmarketable securities	152		115
Other investments | Equity method accounting | Other investments
Investment Holdings [Line Items]
Nonmarketable securities	$ 137		$ 88
Non-marketable securities | Consolidated venture capital and private equity fund investments | Fair value accounting | Strategic Investors Fund, LP
Investment Holdings [Line Items]
Percentage of ownership (less than 5%)	12.60%	12.60%
Non-marketable securities | Consolidated venture capital and private equity fund investments | Fair value accounting | Capital Preferred Return Fund, LP
Investment Holdings [Line Items]
Percentage of ownership (less than 5%)	20.00%	20.00%
Non-marketable securities | Consolidated venture capital and private equity fund investments | Fair value accounting | Growth Partners, LP
Investment Holdings [Line Items]
Percentage of ownership (less than 5%)	33.00%	33.00%
Non-marketable securities | Consolidated venture capital and private equity fund investments | Equity method accounting | Strategic Investors Fund II, LP
Investment Holdings [Line Items]
Percentage of ownership (less than 5%)	8.60%	8.60%
Non-marketable securities | Consolidated venture capital and private equity fund investments | Equity method accounting | Strategic Investors Fund III, LP
Investment Holdings [Line Items]
Percentage of ownership (less than 5%)	5.90%	5.90%
Non-marketable securities | Consolidated venture capital and private equity fund investments | Equity method accounting | Strategic Investors Fund IV, LP
Investment Holdings [Line Items]
Percentage of ownership (less than 5%)	5.00%	5.00%
Non-marketable securities | Consolidated venture capital and private equity fund investments | Equity method accounting | CP II, LP
Investment Holdings [Line Items]
Percentage of ownership (less than 5%)	5.10%	5.10%
Non-marketable securities | Consolidated venture capital and private equity fund investments | Equity method accounting | CP II, LP | Direct ownership interest
Investment Holdings [Line Items]
Percentage of ownership (less than 5%)	1.30%
Non-marketable securities | Consolidated venture capital and private equity fund investments | Equity method accounting | CP II, LP | Indirect ownership interest
Investment Holdings [Line Items]
Percentage of ownership (less than 5%)	3.80%
Non-marketable securities | Debt funds | Equity method accounting | Direct ownership interest
Investment Holdings [Line Items]
Percentage of ownership (less than 5%)	11.50%
Non-marketable securities | Debt funds | Equity method accounting | Indirect ownership interest
Investment Holdings [Line Items]
Percentage of ownership (less than 5%)	4.00%
Non-marketable securities | Debt funds | Equity method accounting | Gold Hill Capital 2008, LP
Investment Holdings [Line Items]
Percentage of ownership (less than 5%)	15.50%	15.50%
Non-marketable securities | Other investments | Equity method accounting | SPD Silicon Valley Bank Co., Ltd.
Investment Holdings [Line Items]
Percentage of ownership (less than 5%)	50.00%	50.00%

Investment Securities - Net Gai

Investment Securities - Net Gains on Non-marketable and Other Equity Securities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Gain (Loss) on Securities [Line Items]
Total net gains on non-marketable and other equity securities	$ 189	$ 190	$ 661	$ 210
Non-marketable securities
Gain (Loss) on Securities [Line Items]
Less: realized net gains (losses) on sales of non-marketable and other equity securities	(17)	5	110	6
Net gains on non-marketable and other equity securities still held	206	185	551	204
Non-marketable securities | Fair value accounting | Consolidated venture capital and private equity fund investments
Gain (Loss) on Securities [Line Items]
Total net gains on non-marketable and other equity securities	36	9	72	13
Non-marketable securities | Fair value accounting | Unconsolidated venture capital and private equity fund investments
Gain (Loss) on Securities [Line Items]
Total net gains on non-marketable and other equity securities	47	16	79	15
Non-marketable securities | Fair value accounting | Other investments
Gain (Loss) on Securities [Line Items]
Total net gains on non-marketable and other equity securities	(2)	0	11	(4)
Non-marketable securities | Equity method accounting | Consolidated venture capital and private equity fund investments
Gain (Loss) on Securities [Line Items]
Total net gains on non-marketable and other equity securities	144	51	438	70
Non-marketable securities | Equity method accounting | Debt funds
Gain (Loss) on Securities [Line Items]
Total net gains on non-marketable and other equity securities	0	0	2	0
Non-marketable securities | Equity method accounting | Other investments
Gain (Loss) on Securities [Line Items]
Total net gains on non-marketable and other equity securities	3	1	6	(3)
Other equity securities | Fair value accounting
Gain (Loss) on Securities [Line Items]
Total net gains on non-marketable and other equity securities	$ (39)	$ 113	$ 53	$ 119

Loans, Allowance for Loan Los_3

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Composition of Loans, Net of Unearned Income (Details) - USD ($) $ in Millions	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	$ 61,487		$ 45,181
ACL	(398)	$ (396)	(448)	$ (513)	$ (590)	$ (305)
Net loans	61,089		44,733
Unearned income on loans	240		226
Credit cards
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	548		400
Construction loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	320		118
Global fund banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	34,120		25,543
ACL	(59)	(66)	(46)	(39)	(54)	(107)
Investor dependent
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	5,377		4,972
ACL	(138)	(158)	(213)	(263)	(292)	(82)
Investor dependent | Early stage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	1,550		1,486
Investor dependent | Growth stage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	3,827		3,486
Cash flow dependent and innovation C&I (Commercial and Industrial)
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL	(109)	(119)	(125)	(121)	(123)	(81)
Cash flow dependent and innovation C&I (Commercial and Industrial) | Cash flow dependent - SLBO
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	1,895		1,989
Cash flow dependent and innovation C&I (Commercial and Industrial) | Innovation C&I
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	5,916		5,136
Private bank
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	8,370		4,901
ACL	(31)	(47)	(53)	(76)	(91)	(22)
CRE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	2,753		0
ACL	(40)	0	0
Other C&I
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	1,259		0
ACL	(12)	0	0
Premium wine and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL	(9)	$ (6)	(9)	(11)	(26)	(13)
Premium wine and other | Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	980		1,053
Premium wine and other | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	252		28
PPP Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, amortized cost	565		1,559
ACL	$ 0		$ (2)	$ (3)	$ (4)	$ 0

Loans, Allowance for Loan Los_4

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Composition of Loans, Net of Unearned Income (Additional Information) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	$ 61,487	$ 45,181
Private bank
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	8,370	4,901
CRE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	2,753	0
Premium wine and other | Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	980	1,053
Premium wine and other | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	252	28
Real estate secured loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	11,229	4,940
Real estate secured loans | Private bank
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	7,400	4,059
Real estate secured loans | Private bank | Loans for personal residence
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	6,684	3,392
Real estate secured loans | Private bank | Loans to eligible employees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	449	481
Real estate secured loans | Private bank | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	131	43
Real estate secured loans | Private bank | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	136	143
Real estate secured loans | CRE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	2,753	0
Real estate secured loans | CRE | Multifamily and residential investment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	1,047	0
Real estate secured loans | CRE | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	564	0
Real estate secured loans | CRE | Office and medical
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	540	0
Real estate secured loans | CRE | Manufacturing, industrial and warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	309	0
Real estate secured loans | CRE | Hospitality
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	155	0
Real estate secured loans | CRE | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	138	0
Real estate secured loans | Premium wine and other | Premium wine
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	795	824
Real estate secured loans | Premium wine and other | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, at amortized cost	$ 281	$ 57

Loans, Allowance for Loan Los_5

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Credit Quality Indicators, Broken out by Risk-Based Segments and Vintage Year (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	$ 8,189	$ 9,153
Year Two	6,755	4,008
Year Three	3,528	1,863
Year Four	1,639	934
Year Five	1,217	530
Prior	2,651	600
Revolving Loans	37,456	28,038
Revolving Loans Converted to Term Loans	81	55
Unallocated	(29)
Loans, amortized cost	61,487	45,181
Global fund banking
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	470	440
Year Two	111	48
Year Three	40	69
Year Four	54	23
Year Five	12	2
Prior	6	6
Revolving Loans	33,426	24,947
Revolving Loans Converted to Term Loans	1	8
Unallocated	0
Loans, amortized cost	34,120	25,543
Global fund banking | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	0	0
Global fund banking | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	470	440
Year Two	111	48
Year Three	40	69
Year Four	54	23
Year Five	12	2
Prior	6	6
Revolving Loans	33,423	24,947
Revolving Loans Converted to Term Loans	0	2
Unallocated	0
Loans, amortized cost	34,116	25,537
Global fund banking | Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Revolving Loans	3	0
Revolving Loans Converted to Term Loans	1	6
Unallocated	0
Loans, amortized cost	4	6
Investor dependent
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	2,320	2,544
Year Two	1,703	1,254
Year Three	629	528
Year Four	161	116
Year Five	32	10
Prior	3	17
Revolving Loans	524	494
Revolving Loans Converted to Term Loans	5	9
Unallocated	0
Loans, amortized cost	5,377	4,972
Investor dependent | Early stage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	631	716
Year Two	485	452
Year Three	208	152
Year Four	41	43
Year Five	9	5
Prior	1	1
Revolving Loans	175	116
Revolving Loans Converted to Term Loans	0	1
Unallocated	0
Loans, amortized cost	1,550	1,486
Investor dependent | Early stage | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0	2
Year Two	0	9
Year Three	3	5
Year Four	1	1
Year Five	0	0
Prior	0	0
Revolving Loans	0	1
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	4	18
Investor dependent | Early stage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	605	667
Year Two	386	370
Year Three	174	121
Year Four	35	32
Year Five	8	1
Prior	1	1
Revolving Loans	149	96
Revolving Loans Converted to Term Loans	0	1
Unallocated	0
Loans, amortized cost	1,358	1,289
Investor dependent | Early stage | Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	26	47
Year Two	99	73
Year Three	31	26
Year Four	5	10
Year Five	1	4
Prior	0	0
Revolving Loans	26	19
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	188	179
Investor dependent | Growth stage
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	1,689	1,828
Year Two	1,218	802
Year Three	421	376
Year Four	120	73
Year Five	23	5
Prior	2	16
Revolving Loans	349	378
Revolving Loans Converted to Term Loans	5	8
Unallocated	0
Loans, amortized cost	3,827	3,486
Investor dependent | Growth stage | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0	17
Year Two	14	3
Year Three	1	4
Year Four	3	3
Year Five	0	0
Prior	0	0
Revolving Loans	8	6
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	26	33
Investor dependent | Growth stage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	1,609	1,746
Year Two	1,120	696
Year Three	369	316
Year Four	113	61
Year Five	22	5
Prior	2	9
Revolving Loans	316	325
Revolving Loans Converted to Term Loans	5	8
Unallocated	0
Loans, amortized cost	3,556	3,166
Investor dependent | Growth stage | Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	80	65
Year Two	84	103
Year Three	51	56
Year Four	4	9
Year Five	1	0
Prior	0	7
Revolving Loans	25	47
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	245	287
Cash flow dependent and innovation C&I (Commercial and Industrial) | Cash flow dependent - SLBO
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	782	791
Year Two	503	534
Year Three	310	329
Year Four	143	196
Year Five	102	50
Prior	13	0
Revolving Loans	42	89
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	1,895	1,989
Cash flow dependent and innovation C&I (Commercial and Industrial) | Cash flow dependent - SLBO | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0	0
Year Two	0	12
Year Three	12	16
Year Four	10	7
Year Five	7	0
Prior	0	0
Revolving Loans	5	5
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	34	40
Cash flow dependent and innovation C&I (Commercial and Industrial) | Cash flow dependent - SLBO | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	780	791
Year Two	489	452
Year Three	280	274
Year Four	94	167
Year Five	85	37
Prior	0	0
Revolving Loans	34	75
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	1,762	1,796
Cash flow dependent and innovation C&I (Commercial and Industrial) | Cash flow dependent - SLBO | Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	2	0
Year Two	14	70
Year Three	18	39
Year Four	39	22
Year Five	10	13
Prior	13	0
Revolving Loans	3	9
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	99	153
Cash flow dependent and innovation C&I (Commercial and Industrial) | Innovation C&I
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	1,461	1,793
Year Two	1,410	775
Year Three	407	417
Year Four	277	156
Year Five	131	39
Prior	3	0
Revolving Loans	2,227	1,955
Revolving Loans Converted to Term Loans	0	1
Unallocated	0
Loans, amortized cost	5,916	5,136
Cash flow dependent and innovation C&I (Commercial and Industrial) | Innovation C&I | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	5
Year Four	0	0
Year Five	0	0
Prior	0	0
Revolving Loans	0	1
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	0	6
Cash flow dependent and innovation C&I (Commercial and Industrial) | Innovation C&I | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	1,426	1,718
Year Two	1,298	703
Year Three	334	378
Year Four	260	152
Year Five	131	39
Prior	3	0
Revolving Loans	1,983	1,791
Revolving Loans Converted to Term Loans	0	1
Unallocated	0
Loans, amortized cost	5,435	4,782
Cash flow dependent and innovation C&I (Commercial and Industrial) | Innovation C&I | Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	35	75
Year Two	112	72
Year Three	73	34
Year Four	17	4
Year Five	0	0
Prior	0	0
Revolving Loans	244	163
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	481	348
Private bank
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	2,163	1,881
Year Two	2,159	1,163
Year Three	1,265	402
Year Four	569	354
Year Five	500	300
Prior	1,075	416
Revolving Loans	628	384
Revolving Loans Converted to Term Loans	11	1
Unallocated	0
Loans, amortized cost	8,370	4,901
Private bank | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	3
Year Four	1	0
Year Five	0	0
Prior	9	2
Revolving Loans	0	1
Revolving Loans Converted to Term Loans	1	0
Unallocated	0
Loans, amortized cost	11	6
Private bank | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	2,163	1,878
Year Two	2,159	1,153
Year Three	1,259	394
Year Four	566	353
Year Five	496	295
Prior	1,053	406
Revolving Loans	625	382
Revolving Loans Converted to Term Loans	10	1
Unallocated	0
Loans, amortized cost	8,331	4,862
Private bank | Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0	3
Year Two	0	10
Year Three	6	5
Year Four	2	1
Year Five	4	5
Prior	13	8
Revolving Loans	3	1
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	28	33
CRE
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	259
Year Two	278
Year Three	473
Year Four	224
Year Five	313
Prior	1,052
Revolving Loans	139
Revolving Loans Converted to Term Loans	15
Unallocated	0
Loans, amortized cost	2,753	0
CRE | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0
Year Two	0
Year Three	5
Year Four	14
Year Five	0
Prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Unallocated	0
Loans, amortized cost	19
CRE | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	256
Year Two	249
Year Three	359
Year Four	160
Year Five	263
Prior	927
Revolving Loans	120
Revolving Loans Converted to Term Loans	15
Unallocated	0
Loans, amortized cost	2,349
CRE | Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	3
Year Two	29
Year Three	109
Year Four	50
Year Five	50
Prior	125
Revolving Loans	19
Revolving Loans Converted to Term Loans	0
Unallocated	0
Loans, amortized cost	385
Premium wine and other | Premium wine
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	131	145
Year Two	143	218
Year Three	200	107
Year Four	84	89
Year Five	76	129
Prior	186	160
Revolving Loans	126	169
Revolving Loans Converted to Term Loans	34	36
Unallocated	0
Loans, amortized cost	980	1,053
Premium wine and other | Premium wine | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0	0
Year Two	0	0
Year Three	7	0
Year Four	0	0
Year Five	10	1
Prior	0	0
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	17	1
Premium wine and other | Premium wine | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	129	127
Year Two	131	194
Year Three	182	71
Year Four	68	79
Year Five	66	115
Prior	148	154
Revolving Loans	114	135
Revolving Loans Converted to Term Loans	34	36
Unallocated	0
Loans, amortized cost	872	911
Premium wine and other | Premium wine | Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	2	18
Year Two	12	24
Year Three	11	36
Year Four	16	10
Year Five	0	13
Prior	38	6
Revolving Loans	12	34
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	91	141
Premium wine and other | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	25	0
Year Two	114	16
Year Three	98	11
Year Four	24	0
Year Five	16	0
Prior	0	1
Revolving Loans	4	0
Revolving Loans Converted to Term Loans	0	0
Unallocated	(29)
Loans, amortized cost	252	28
Premium wine and other | Other | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	0	0
Premium wine and other | Other | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	25	0
Year Two	114	16
Year Three	97	11
Year Four	21	0
Year Five	13	0
Prior	0	1
Revolving Loans	4	0
Revolving Loans Converted to Term Loans	0	0
Unallocated	(29)
Loans, amortized cost	245	28
Premium wine and other | Other | Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0	0
Year Two	0	0
Year Three	1	0
Year Four	3	0
Year Five	3	0
Prior	0	0
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	7	0
Other C&I
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	164
Year Two	183
Year Three	106
Year Four	103
Year Five	35
Prior	313
Revolving Loans	340
Revolving Loans Converted to Term Loans	15
Unallocated	0
Loans, amortized cost	1,259	0
Other C&I | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0
Year Two	0
Year Three	0
Year Four	1
Year Five	0
Prior	1
Revolving Loans	1
Revolving Loans Converted to Term Loans	0
Unallocated	0
Loans, amortized cost	3
Other C&I | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	159
Year Two	179
Year Three	96
Year Four	93
Year Five	33
Prior	310
Revolving Loans	324
Revolving Loans Converted to Term Loans	10
Unallocated	0
Loans, amortized cost	1,204
Other C&I | Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	5
Year Two	4
Year Three	10
Year Four	9
Year Five	2
Prior	2
Revolving Loans	15
Revolving Loans Converted to Term Loans	5
Unallocated	0
Loans, amortized cost	52
PPP Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	414	1,559
Year Two	151	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	565	1,559
PPP Loans | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	0	0
PPP Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	387	1,456
Year Two	120	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	507	1,456
PPP Loans | Criticized
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	27	103
Year Two	31	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Unallocated	0
Loans, amortized cost	$ 58	$ 103

Loans, Allowance for Loan Los_6

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Activity Relating to our Allowance for Credit Losses for Loans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Increase in allowance for credit loss	$ 2
Allowance for credit loss, beginning balance	396	$ 590	$ 448	$ 305
Initial Allowance on PCD Loans					$ 22	$ 22
Charge-offs	(19)	(28)	(129)	(80)
Recoveries	8	4	16	16
(Reduction) Provision for Credit Losses	(9)	(54)	41	247
Foreign Currency Translation Adjustments		1		0
Allowance for credit loss, ending balance	398	513	398	513
Boston Private | Non-PCD Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
(Reduction) Provision for Credit Losses	44
Impact of adopting ASC 326
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance				25
Accrued interest receivable and other assets | Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Accrued interest receivable	160		160			126
Global fund banking
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	66	54	46	107
Initial Allowance on PCD Loans					0	0
Charge-offs	0	0	(80)	0
Recoveries	0	0	0	0
(Reduction) Provision for Credit Losses	(7)	(15)	93	2
Foreign Currency Translation Adjustments		0		0
Allowance for credit loss, ending balance	59	39	59	39
Global fund banking | Impact of adopting ASC 326
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance				(70)
Investor dependent
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	158	292	213	82
Initial Allowance on PCD Loans					0	0
Charge-offs	(17)	(28)	(37)	(67)
Recoveries	5	4	13	12
(Reduction) Provision for Credit Losses	(8)	(5)	(51)	165
Foreign Currency Translation Adjustments		0		(1)
Allowance for credit loss, ending balance	138	263	138	263
Investor dependent | Impact of adopting ASC 326
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance				72
Cash flow dependent and innovation C&I (Commercial and Industrial)
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	119	123	125	81
Initial Allowance on PCD Loans					0	0
Charge-offs	(1)	0	(8)	(11)
Recoveries	3	0	3	3
(Reduction) Provision for Credit Losses	(12)	(2)	(11)	50
Foreign Currency Translation Adjustments		0		(1)
Allowance for credit loss, ending balance	109	121	109	121
Cash flow dependent and innovation C&I (Commercial and Industrial) | Impact of adopting ASC 326
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance				(1)
Private bank
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	47	91	53	22
Initial Allowance on PCD Loans					1	1
Charge-offs	(1)	0	(3)	(2)
Recoveries	0	0	0	0
(Reduction) Provision for Credit Losses	(16)	(15)	(20)	44
Foreign Currency Translation Adjustments		0		0
Allowance for credit loss, ending balance	31	76	31	76
Private bank | Impact of adopting ASC 326
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance				12
CRE
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	0		0
Initial Allowance on PCD Loans					17	17
Charge-offs	0		0
Recoveries	0		0
(Reduction) Provision for Credit Losses	23		23
Allowance for credit loss, ending balance	40		40
Other C&I
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	0		0
Initial Allowance on PCD Loans					4	4
Charge-offs	0		0
Recoveries	0		0
(Reduction) Provision for Credit Losses	8		8
Allowance for credit loss, ending balance	12		12
Premium wine and other
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	6	26	9	13
Initial Allowance on PCD Loans					$ 0	0
Charge-offs	0	0	(1)	0
Recoveries	0	0	0	1
(Reduction) Provision for Credit Losses	3	(16)	1	(17)
Foreign Currency Translation Adjustments		1		2
Allowance for credit loss, ending balance	9	11	9	11
Premium wine and other | Impact of adopting ASC 326
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance				12
PPP Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance		4	2	0
Initial Allowance on PCD Loans						$ 0
Charge-offs		0	0	0
Recoveries		0	0	0
(Reduction) Provision for Credit Losses		(1)	(2)	3
Foreign Currency Translation Adjustments		0		0
Allowance for credit loss, ending balance	$ 0	$ 3	$ 0	3
PPP Loans | Impact of adopting ASC 326
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance				$ 0

Loans, Allowance for Loan Los_7

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Summary of the Aging of Loans Broken out by Risk-based Segments (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	$ 61,487	$ 45,181
Loans Past Due 90 Days or More Still Accruing Interest	3	0
30 - 59   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	22	59
60 - 89   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	6	7
Equal to or Greater Than 90   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	27	2
Total Past Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	55	68
Current
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	61,432	45,113
Global fund banking
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	34,120	25,543
Loans Past Due 90 Days or More Still Accruing Interest	0	0
Global fund banking | 30 - 59   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	28
Global fund banking | 60 - 89   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	0
Global fund banking | Equal to or Greater Than 90   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	0
Global fund banking | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	28
Global fund banking | Current
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	34,120	25,515
Investor dependent
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	5,377	4,972
Loans Past Due 90 Days or More Still Accruing Interest	0	0
Investor dependent | 30 - 59   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	3	17
Investor dependent | 60 - 89   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	2
Investor dependent | Equal to or Greater Than 90   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	1
Investor dependent | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	3	20
Investor dependent | Current
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	5,374	4,952
Investor dependent | Early stage
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	1,550	1,486
Loans Past Due 90 Days or More Still Accruing Interest	0	0
Investor dependent | Early stage | 30 - 59   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	1	6
Investor dependent | Early stage | 60 - 89   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	2
Investor dependent | Early stage | Equal to or Greater Than 90   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	0
Investor dependent | Early stage | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	1	8
Investor dependent | Early stage | Current
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	1,549	1,478
Investor dependent | Growth stage
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	3,827	3,486
Loans Past Due 90 Days or More Still Accruing Interest	0	0
Investor dependent | Growth stage | 30 - 59   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	2	11
Investor dependent | Growth stage | 60 - 89   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	0
Investor dependent | Growth stage | Equal to or Greater Than 90   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	1
Investor dependent | Growth stage | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	2	12
Investor dependent | Growth stage | Current
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	3,825	3,474
Cash flow dependent and innovation C&I (Commercial and Industrial) | Cash flow dependent - SLBO
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	1,895	1,989
Loans Past Due 90 Days or More Still Accruing Interest	0	0
Cash flow dependent and innovation C&I (Commercial and Industrial) | Cash flow dependent - SLBO | 30 - 59   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	0
Cash flow dependent and innovation C&I (Commercial and Industrial) | Cash flow dependent - SLBO | 60 - 89   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	0
Cash flow dependent and innovation C&I (Commercial and Industrial) | Cash flow dependent - SLBO | Equal to or Greater Than 90   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	0
Cash flow dependent and innovation C&I (Commercial and Industrial) | Cash flow dependent - SLBO | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	0
Cash flow dependent and innovation C&I (Commercial and Industrial) | Cash flow dependent - SLBO | Current
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	1,895	1,989
Cash flow dependent and innovation C&I (Commercial and Industrial) | Innovation C&I
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	5,916	5,136
Loans Past Due 90 Days or More Still Accruing Interest	0	0
Cash flow dependent and innovation C&I (Commercial and Industrial) | Innovation C&I | 30 - 59   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	1	7
Cash flow dependent and innovation C&I (Commercial and Industrial) | Innovation C&I | 60 - 89   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	3	1
Cash flow dependent and innovation C&I (Commercial and Industrial) | Innovation C&I | Equal to or Greater Than 90   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	0
Cash flow dependent and innovation C&I (Commercial and Industrial) | Innovation C&I | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	4	8
Cash flow dependent and innovation C&I (Commercial and Industrial) | Innovation C&I | Current
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	5,912	5,128
Private bank
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	8,370	4,901
Loans Past Due 90 Days or More Still Accruing Interest	2	0
Private bank | 30 - 59   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	1	4
Private bank | 60 - 89   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	2	4
Private bank | Equal to or Greater Than 90   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	8	0
Private bank | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	11	8
Private bank | Current
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	8,359	4,893
CRE
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	2,753	0
Loans Past Due 90 Days or More Still Accruing Interest	0
CRE | 30 - 59   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	14
CRE | 60 - 89   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0
CRE | Equal to or Greater Than 90   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0
CRE | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	14
CRE | Current
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	2,739
Premium wine and other | Premium wine
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	980	1,053
Loans Past Due 90 Days or More Still Accruing Interest	0	0
Premium wine and other | Premium wine | 30 - 59   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	3
Premium wine and other | Premium wine | 60 - 89   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	0
Premium wine and other | Premium wine | Equal to or Greater Than 90   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	17	1
Premium wine and other | Premium wine | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	17	4
Premium wine and other | Premium wine | Current
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	963	1,049
Premium wine and other | Other
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	252	28
Loans Past Due 90 Days or More Still Accruing Interest	0	0
Premium wine and other | Other | 30 - 59   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	0
Premium wine and other | Other | 60 - 89   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	0
Premium wine and other | Other | Equal to or Greater Than 90   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	0
Premium wine and other | Other | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	0
Premium wine and other | Other | Current
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	252	28
Other C&I
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	1,259	0
Loans Past Due 90 Days or More Still Accruing Interest	0
Other C&I | 30 - 59   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	3
Other C&I | 60 - 89   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	1
Other C&I | Equal to or Greater Than 90   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	1
Other C&I | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	5
Other C&I | Current
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	1,254
PPP Loans
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	565	1,559
Loans Past Due 90 Days or More Still Accruing Interest	1	0
PPP Loans | 30 - 59   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	0
PPP Loans | 60 - 89   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	0	0
PPP Loans | Equal to or Greater Than 90   Days Past   Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	1	0
PPP Loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	1	0
PPP Loans | Current
Financing Receivable, Past Due [Line Items]
Loans, amortized cost	$ 564	$ 1,559

Loans, Allowance for Loan Los_8

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Nonaccrual Loans with No Allowance for Credit Loss (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	$ 114,000	$ 104,000
Nonaccrual Loans with no Allowance for Credit Loss	19,000	8,000
Boston Private
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	31,000
Investor dependent
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	30,000	51,000
Nonaccrual Loans with no Allowance for Credit Loss	0	3,000
Investor dependent | Early stage
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	4,000	18,000
Nonaccrual Loans with no Allowance for Credit Loss	0	0
Investor dependent | Growth stage
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	26,000	33,000
Nonaccrual Loans with no Allowance for Credit Loss	0	3,000
Cash flow dependent and innovation C&I (Commercial and Industrial) | Cash flow dependent - SLBO
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	34,000	40,000
Nonaccrual Loans with no Allowance for Credit Loss	0	0
Cash flow dependent and innovation C&I (Commercial and Industrial) | Innovation C&I
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	0	6,000
Nonaccrual Loans with no Allowance for Credit Loss	0	1,000
Private bank
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	11,000	6,000
Nonaccrual Loans with no Allowance for Credit Loss	2,000	3,000
CRE
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	19,000	0
Nonaccrual Loans with no Allowance for Credit Loss	0	0
Premium wine and other | Premium wine
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	17,000	1,000
Nonaccrual Loans with no Allowance for Credit Loss	17,000	1,000
Other C&I
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans	3,000	0
Nonaccrual Loans with no Allowance for Credit Loss	$ 0	$ 0

Loans, Allowance for Loan Los_9

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Summary of Loans Modified in Troubled Debt Restructurings (TDRs) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)troubled_debt_restructuring	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of TDRs | troubled_debt_restructuring			57
Loans modified in TDRs	$ 122,000		$ 122,000		$ 61,000
Unfunded commitments available for funding associated with TDRs (less than)	1,000		1,000
Loans modified in TDRs during the period	53,000	$ 26,000	66,000	$ 32,000
Payment deferrals
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	17,000	25,000	30,000	31,000
Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	14,000		14,000
Payment Deferral and Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	22,000		$ 22,000
Boston Private
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of TDRs | troubled_debt_restructuring			48
Loans modified in TDRs	60,000		$ 60,000
Loans modified in TDRs during the period	45,000		45,000
Investor dependent
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	26,000		26,000		36,000
Loans modified in TDRs during the period	8,000	4,000	9,000	8,000
Investor dependent | Early stage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	0		0		7,000
Loans modified in TDRs during the period	0	4,000	1,000	4,000
Investor dependent | Growth stage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	26,000		26,000		29,000
Loans modified in TDRs during the period	8,000	0	8,000	4,000
Cash flow dependent and innovation C&I (Commercial and Industrial) | Cash flow dependent - SLBO
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	34,000		34,000		22,000
Loans modified in TDRs during the period	0	21,000	12,000	21,000
Cash flow dependent and innovation C&I (Commercial and Industrial) | Innovation C&I
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	0		0		1,000
Loans modified in TDRs during the period	0	1,000	0	2,000
Private bank
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	10,000		10,000		0
Loans modified in TDRs during the period	2,000	0	2,000	0
CRE
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	48,000		48,000		0
Loans modified in TDRs during the period	43,000	0	43,000	0
Premium wine and other | Premium wine
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	2,000		2,000		2,000
Loans modified in TDRs during the period	0	$ 0	0	$ 1,000
Other C&I
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs	$ 2,000		$ 2,000		$ 0

Loans, Allowance for Loan Lo_10

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Recorded Investment in Loans Modified in TDRs (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	$ 53,000,000	$ 26,000,000	$ 66,000,000	$ 32,000,000
Partial charge-offs on loans classified as TDRs	0	14,000,000	7,000,000	31,000,000
Boston Private
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	45,000,000		45,000,000
Payment deferrals
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	17,000,000	25,000,000	30,000,000	31,000,000
Principal forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period		1,000,000		1,000,000
Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	14,000,000		14,000,000
Investor dependent
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	8,000,000	4,000,000	9,000,000	8,000,000
Investor dependent | Early stage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	0	4,000,000	1,000,000	4,000,000
Investor dependent | Growth stage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	8,000,000	0	8,000,000	4,000,000
Cash flow dependent and innovation C&I (Commercial and Industrial) | Cash flow dependent - SLBO
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	0	21,000,000	12,000,000	21,000,000
Cash flow dependent and innovation C&I (Commercial and Industrial) | Innovation C&I
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	0	1,000,000	0	2,000,000
Private bank
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	2,000,000	0	2,000,000	0
CRE
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	43,000,000	0	43,000,000	0
Premium wine and other | Premium wine
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans modified in TDRs during the period	$ 0	$ 0	$ 0	$ 1,000,000

Loans, Allowance for Loan Lo_11

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 Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment in loans modified in TDRs	$ 0	$ 1	$ 0	$ 1
Premium wine and other | Premium wine
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment in loans modified in TDRs	$ 0	$ 1	$ 0	$ 1

Loans, Allowance for Loan Lo_12

Loans, Allowance for Loan Losses and Allowance for Unfunded Credit Commitments - Allowance for Credit Losses: Unfunded Credit Commitments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	$ 396	$ 590	$ 448	$ 305
Provision for credit losses (1)	(9)	(54)	41	247
Allowance for credit loss, ending balance	398	513	398	513
Increase in allowance for credit loss	2
Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance				25
Unfunded Credit Commitments
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	120	99	121	67
Provision for credit losses (1)	29	2	28	11
Allowance for credit loss, ending balance	149	101	149	101
Increase in allowance for credit loss	29
Unfunded Credit Commitments | Boston Private
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for credit losses (1)	2		2
Unfunded Credit Commitments | Cumulative adjustment for the adoption of amendment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss, beginning balance	$ 0	$ 0	$ 0	$ 23

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 344	$ 143
Amortization expense	$ 9

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Goodwill Rollforward (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Beginning Balance	$ 143
Goodwill	201
Goodwill, Ending Balance	$ 344

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Other intangible assets:
Estimated Fair Value	$ 182	$ 78
Accumulated Amortization	26	17
Net Carrying Amount	156	61
Customer relationships
Other intangible assets:
Estimated Fair Value	127	42
Accumulated Amortization	12	8
Net Carrying Amount	115	34
Other
Other intangible assets:
Estimated Fair Value	55	36
Accumulated Amortization	14	9
Net Carrying Amount	$ 41	$ 27

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Future Amortization Expense (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
2021 (excluding the nine months ended September 30, 2021)	$ 9
2022	21
2023	19
2024	18
2025	15
2026 and thereafter	74
Net Carrying Amount	$ 156	$ 61

Derivative Financial Instrume_3

Derivative Financial Instruments - Fair Value Hedges (Details) - Interest rate swaps - Other assets - Derivatives designated as hedging instruments $ in Millions	Sep. 30, 2021USD ($)
Derivative [Line Items]
Amortized Cost Basis of the Hedged Assets	$ 17,524
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets (2)	(13)
Amortized cost of hedged items where the hedged item is the last layer expected to be remaining at the end of the hedging relationship	13,400
Amount of hedged items where the hedged item is the last layer expected to be remaining at the end of the hedging relationship	7,300
Cumulative adjustments of hedged items where the hedged item is the last layer expected to be remaining at the end of the hedging relationship	13
Hedged Asset, Discontinued Fair Value Hedge, Cumulative Increase (Decrease)	$ 6

Derivative Financial Instrume_4

Derivative Financial Instruments - Cash Flow Hedges (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Mar. 31, 2021
Derivative [Line Items]
Unrealized gain on terminated cash flow hedge remaining in AOCI, before tax	$ 132
Unrealized gain on terminated cash flow hedge remaining in AOCI, net of tax	$ 95
Term unrealized gains reclassified into earnings	4 years
Derivatives designated as hedging instruments | Interest rate swaps
Derivative [Line Items]
Derivative notional amount		$ 5,000
Derivatives net asset fair value		$ 228

Derivative Financial Instrume_5

Derivative Financial Instruments - Total Notional or Contractual Amounts, Fair Value, Collateral and Net Exposure of Derivative Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Derivative [Line Items]
Derivative Assets	$ 314	$ 285
Derivative Liabilities	274	237
Derivative Assets, Total	588	488
Derivative Liabilities, Total	274	237
Reduction in derivative liabilities due to rules of clearing houses	5	45
Interest rate swaps
Derivative [Line Items]
Derivative Assets	14	0
Derivative Liabilities	0	0
Foreign exchange forwards and swaps
Derivative [Line Items]
Derivative Assets	183	215
Derivative Liabilities	156	208
Client foreign currency options
Derivative [Line Items]
Derivative Assets	2	2
Derivative Liabilities	2	2
Client interest rate derivatives
Derivative [Line Items]
Derivative Assets	115	68
Derivative Liabilities	116	27
Derivatives designated as hedging instruments | Interest rate swaps | Other assets
Derivative [Line Items]
Derivative Asset, Notional or Contractual Amount	9,175	0
Derivative Assets	14	0
Derivatives designated as hedging instruments | Interest rate swaps | Other liabilities
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	2,125	0
Derivative Liabilities	0	0
Derivatives not designated as hedging instruments
Derivative [Line Items]
Derivative Assets	574	488
Derivative Liabilities	274	237
Derivatives not designated as hedging instruments | Foreign exchange forwards and swaps | Other assets
Derivative [Line Items]
Derivative Asset, Notional or Contractual Amount	651	68
Derivative Liabilities	12	0
Derivatives not designated as hedging instruments | Foreign exchange forwards and swaps | Other liabilities
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	80	567
Derivative Liabilities	1	20
Derivatives not designated as hedging instruments | Equity warrant assets | Other assets
Derivative [Line Items]
Derivative Asset, Notional or Contractual Amount	309	253
Derivative Assets	274	203
Derivatives not designated as hedging instruments | Client foreign exchange forwards and swaps | Other assets
Derivative [Line Items]
Derivative Asset, Notional or Contractual Amount	8,974	8,026
Derivative Assets	171	215
Derivatives not designated as hedging instruments | Client foreign exchange forwards and swaps | Other liabilities
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	8,652	7,491
Derivative Liabilities	155	188
Derivatives not designated as hedging instruments | Client foreign currency options | Other assets
Derivative [Line Items]
Derivative Asset, Notional or Contractual Amount	196	98
Derivative Assets	2	2
Derivatives not designated as hedging instruments | Client foreign currency options | Other liabilities
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	196	98
Derivative Liabilities	2	2
Derivatives not designated as hedging instruments | Client interest rate derivatives | Other assets
Derivative [Line Items]
Derivative Asset, Notional or Contractual Amount	2,249	1,082
Derivative Assets	115	68
Derivatives not designated as hedging instruments | Client interest rate derivatives | Other liabilities
Derivative [Line Items]
Derivative Liabilities, Notional or Contractual Amount	2,264	1,251
Derivative Liabilities	$ 116	$ 27

Derivative Financial Instrume_6

Derivative Financial Instruments - Summary of Derivative Activity and Related Impact on Consolidated Statements of Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives			$ (5)	$ 88
Interest rate risks | Derivatives designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	$ 15	$ 16	46	34
Interest rate risks | Derivatives designated as hedging instruments | Reclassification out of Accumulated Other Comprehensive Income | Interest income - loans
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	16	16	47	34
Interest rate risks | Derivatives designated as hedging instruments | Change In Fair Value Of Interest Rate Swaps Hedging Investment Securities | Interest income - loans
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	5	0	18	0
Interest rate risks | Derivatives designated as hedging instruments | Change In Fair Value Of Hedged Investment Securities | Interest income - loans
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	(6)	0	(19)	0
Currency exchange risk | Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	0	(2)	0	0
Currency exchange risk | Derivatives not designated as hedging instruments | Revaluations of internal foreign currency instruments, net | Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	(14)	17	(35)	20
Currency exchange risk | Derivatives not designated as hedging instruments | Foreign exchange forward contracts, net | Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	14	(19)	35	(20)
Other derivative instruments | Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	(4)	2	1	(1)
Other derivative instruments | Derivatives not designated as hedging instruments | Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gains (losses) on derivatives	2	31	4	27
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	1	0	16	(3)
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	(5)	2	(15)	2
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	$ 147	$ 54	$ 491	$ 94

Derivative Financial Instrume_7

Derivative Financial Instruments - Balance Sheet Offsetting, Assets (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Derivative Assets
Gross Amounts of Recognized Assets	$ 314	$ 285
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	314	285
Financial Instruments (Collateral)	(184)	(145)
Cash Collateral Received	(42)	(21)
Net Amount	88	119
Reverse repurchase, securities borrowing, and similar arrangements
Gross Amounts of Recognized Assets	216	227
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	216	227
Financial Instruments (Collateral)	(216)	(227)
Cash Collateral Received	0	0
Net Amount	0	0
Total
Gross Amounts of Recognized Assets	530	512
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	530	512
Financial Instruments (Collateral)	(400)	(372)
Cash Collateral Received	(42)	(21)
Net Amount	88	119
Interest rate swaps
Derivative Assets
Gross Amounts of Recognized Assets	14	0
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	14	0
Derivative Asset, Not Offset, Policy Election Deduction	0	0
Cash Collateral Received	(7)	0
Net Amount	7	0
Foreign exchange forwards and swaps
Derivative Assets
Gross Amounts of Recognized Assets	183	215
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	183	215
Derivative Asset, Not Offset, Policy Election Deduction	(71)	(76)
Cash Collateral Received	(33)	(21)
Net Amount	79	118
Client foreign currency options
Derivative Assets
Gross Amounts of Recognized Assets	2	2
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	2	2
Derivative Asset, Not Offset, Policy Election Deduction	0	(1)
Cash Collateral Received	0	0
Net Amount	2	1
Client interest rate derivatives
Derivative Assets
Gross Amounts of Recognized Assets	115	68
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Assets Presented in the Statement of Financial Position	115	68
Derivative Asset, Not Offset, Policy Election Deduction	(113)	(68)
Cash Collateral Received	(2)	0
Net Amount	$ 0	$ 0

Derivative Financial Instrume_8

Derivative Financial Instruments - Balance Sheet Offsetting, Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Derivative Liabilities
Gross Amounts of Recognized Liabilities	$ 274	$ 237
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	274	237
Financial Instruments (Collateral)	(117)	(85)
Cash Collateral Pledged	(81)	(71)
Net Amount	76	81
Repurchase, securities lending, and similar arrangements
Securities Sold under Agreements to Repurchase, Gross	97	0
Securities Sold under Agreements to Repurchase, Asset	0	0
Securities Sold under Agreements to Repurchase	97	0
Financial Instruments (Collateral)	0	0
Cash Collateral Pledged	0	0
Net Amount	97	0
Total
Gross Amounts of Recognized Liabilities	371	237
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	371	237
Financial Instruments (Collateral)	(117)	(85)
Cash Collateral Pledged	(81)	(71)
Net Amount	173	81
Interest rate swaps
Derivative Liabilities
Gross Amounts of Recognized Liabilities	0	0
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	0	0
Derivative Liability, Not Offset, Policy Election Deduction	0	0
Cash Collateral Pledged	0	0
Net Amount	0	0
Foreign exchange forwards and swaps
Derivative Liabilities
Gross Amounts of Recognized Liabilities	156	208
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	156	208
Derivative Liability, Not Offset, Policy Election Deduction	(66)	(84)
Cash Collateral Pledged	(14)	(45)
Net Amount	76	79
Client foreign currency options
Derivative Liabilities
Gross Amounts of Recognized Liabilities	2	2
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	2	2
Derivative Liability, Not Offset, Policy Election Deduction	(1)	(1)
Cash Collateral Pledged	(1)	0
Net Amount	0	1
Client interest rate derivatives
Derivative Liabilities
Gross Amounts of Recognized Liabilities	116	27
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	116	27
Derivative Liability, Not Offset, Policy Election Deduction	(50)	0
Cash Collateral Pledged	(66)	(26)
Net Amount	$ 0	$ 1

Noninterest Income - Summary of

Noninterest Income - Summary of Noninterest Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other Income and Expenses [Abstract]
Gains on investment securities, net	$ 189	$ 190	$ 661	$ 271
Gains on equity warrant assets, net	147	54	491	94
Client investment fees	20	32	55	107
Wealth management and trust fees	22	0	22	0
Foreign exchange fees	65	44	189	128
Credit card fees	34	23	93	72
Deposit service charges	29	22	82	67
Lending related fees	21	13	55	38
Letters of credit and standby letters of credit fees	13	12	39	35
Investment banking revenue	90	92	335	281
Commissions	17	16	58	49
Other	25	49	97	76
Total noninterest income	$ 672	$ 547	$ 2,177	$ 1,218

Noninterest Income - Gains and

Noninterest Income - Gains and Losses on Investments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other Income and Expenses [Abstract]
Total net gains on non-marketable and other equity securities	$ 189	$ 190	$ 661	$ 210
Gains on sales of AFS securities, net	0	0	0	61
Gains on investment securities, net	$ 189	$ 190	$ 661	$ 271

Noninterest Income - Gains an_2

Noninterest Income - Gains and Losses on Derivatives (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other Income and Expenses [Abstract]
Gains on exercises, net	$ 91	$ 24	$ 381	$ 59
Terminations	(1)	0	(2)	(1)
Changes in fair value, net	57	30	112	36
Gains on equity warrant assets, net	$ 147	$ 54	$ 491	$ 94

Noninterest Income - Client Inv

Noninterest Income - Client Investment Fees (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 315	$ 247	$ 948	$ 757
Sweep money market fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	12	18	31	61
Asset management fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	7	12	22	33
Repurchase agreement fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1	2	2	13
Client investment fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 20	$ 32	$ 55	$ 107

Noninterest Income - Wealth Man

Noninterest Income - Wealth Management and Trust Fees (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other Income and Expenses [Abstract]
Wealth management fees	$ 20	$ 0	$ 20	$ 0
Trust fees	2	0	2	0
Wealth management and trust fees	$ 22	$ 0	$ 22	$ 0

Noninterest Income - Foreign Ex

Noninterest Income - Foreign Exchange Fees (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 315	$ 247	$ 948	$ 757
Revenue not from contract with customer	357	300	1,229	461
Foreign exchange fees	65	44	189	128
Spot contract commissions
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	60	39	175	113
Forward contract commissions
Disaggregation of Revenue [Line Items]
Revenue not from contract with customer	5	5	13	14
Option premium fees
Disaggregation of Revenue [Line Items]
Revenue not from contract with customer	$ 0	$ 0	$ 1	$ 1

Noninterest Income - Credit Car

Noninterest Income - Credit Card Fees (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Card interchange fees, net	$ 29	$ 18	$ 78	$ 55
Revenue from contracts with customers	315	247	948	757
Revenue not from contract with customer	357	300	1,229	461
Total credit card fees	34	23	93	72
Merchant service fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	4	4	12	14
Card service fees
Disaggregation of Revenue [Line Items]
Revenue not from contract with customer	$ 1	$ 1	$ 3	$ 3

Noninterest Income - Lending Re

Noninterest Income - Lending Related Fees (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lending related fees	$ 21	$ 13	$ 55	$ 38
Unused commitment fees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lending related fees	14	10	42	27
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lending related fees	$ 7	$ 3	$ 13	$ 11

Noninterest Income - Investment

Noninterest Income - Investment Banking Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Investment banking revenue:
Underwriting fees	$ 39	$ 85	$ 248	$ 248
Advisory fees	26	2	39	26
Private placements and other	25	5	48	7
Total investment banking revenue	$ 90	$ 92	$ 335	$ 281

Noninterest Income - Summary _2

Noninterest Income - Summary of Other Noninterest Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Trading Activity, Gains and Losses, Net [Line Items]
Revenue from contracts with customers	$ 315	$ 247	$ 948	$ 757
Net gains on revaluation of foreign currency instruments, net of foreign exchange forward contracts	(4)	(1)	1	(1)
Gains from conversion of convertible debt options	0	30	0	30
Other service revenue	14	10	45	21
Other	25	49	97	76
Fund management fees
Trading Activity, Gains and Losses, Net [Line Items]
Revenue from contracts with customers	$ 15	$ 10	$ 51	$ 26

Noninterest Income - Disaggrega

Noninterest Income - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 315	$ 247	$ 948	$ 757
Revenues outside the scope of ASC 606	357	300	1,229	461
Noninterest income	672	547	2,177	1,218
Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1	0	3	1
Revenues outside the scope of ASC 606	188	224	793	340
Noninterest income	189	224	796	341
Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	165	126	464	394
Revenues outside the scope of ASC 606	17	22	51	54
Noninterest income	182	148	515	448
SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	23	1	25	2
Revenues outside the scope of ASC 606	2	0	2	0
Noninterest income	25	1	27	2
SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	18	10	59	26
Revenues outside the scope of ASC 606	127	50	330	61
Noninterest income	145	60	389	87
SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	108	110	397	334
Revenues outside the scope of ASC 606	23	4	53	6
Noninterest income	131	114	450	340
Investment banking revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	20	32	55	107
Investment banking revenue | Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment banking revenue | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	20	31	53	105
Investment banking revenue | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	1	2	2
Investment banking revenue | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment banking revenue | SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Wealth management and trust fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	22		22
Wealth management and trust fees | Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Wealth management and trust fees | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Wealth management and trust fees | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	22		22
Wealth management and trust fees | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0		0
Wealth management and trust fees | SVB Leerink
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	60	39	175	113
Spot contract commissions | Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Spot contract commissions | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	59	39	174	113
Spot contract commissions | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1	0	1	0
Spot contract commissions | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Spot contract commissions | SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Card interchange fees, gross
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	52	29	142	92
Card interchange fees, gross | Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	1	1
Card interchange fees, gross | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	52	29	141	91
Card interchange fees, gross | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Card interchange fees, gross | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Card interchange fees, gross | SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Merchant service fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	4	4	12	14
Merchant service fees | Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Merchant service fees | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	4	4	12	14
Merchant service fees | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Merchant service fees | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Merchant service fees | SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Deposit service charges
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	29	22	82	67
Deposit service charges | Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1	0	2	0
Deposit service charges | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	28	22	80	67
Deposit service charges | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Deposit service charges | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Deposit service charges | SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment banking revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	90	92	335	281
Investment banking revenue | Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment banking revenue | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment banking revenue | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment banking revenue | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment banking revenue | SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	90	92	335	281
Commissions
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	17	16	58	49
Commissions | Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Commissions | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Commissions | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Commissions | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Commissions | SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	17	16	58	49
Fund management fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	15	10	51	26
Fund management fees | Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Fund management fees | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Fund management fees | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Fund management fees | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	14	8	47	22
Fund management fees | SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1	2	4	4
Performance fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	4	2	12	4
Performance fees | Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Performance fees | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Performance fees | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Performance fees | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	4	2	12	4
Performance fees | SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Correspondent bank rebates
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	2	1	4	4
Correspondent bank rebates | Other Items
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Correspondent bank rebates | Global Commercial Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	2	1	4	4
Correspondent bank rebates | SVB Private Bank
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Correspondent bank rebates | SVB Capital
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Correspondent bank rebates | SVB Leerink
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 0	$ 0	$ 0	$ 0

Segment Reporting - Additional

Segment Reporting - Additional Information (Details)	3 Months Ended
	Sep. 30, 2021Segment
Segment Reporting [Abstract]
Number of reportable segments	4

Segment Reporting - Segment Inf

Segment Reporting - Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Net interest income	$ 852	$ 528	$ 2,240	$ 1,565
(Provision for) reduction of credit losses	(21)	52	(75)	(258)
Noninterest income	672	547	2,177	1,218
Noninterest expense	(879)	(491)	(2,168)	(1,370)
Income before income tax expense	624	636	2,174	1,155
Total average loans, amortized cost	59,291	37,319	51,843	35,836
Total average assets	182,690	88,348	152,952	79,761
Total average deposits	163,392	77,680	136,113	69,166
Global Commercial Bank
Segment Reporting Information [Line Items]
Noninterest income	182	148	515	448
SVB Private Bank
Segment Reporting Information [Line Items]
Noninterest income	25	1	27	2
SVB Capital
Segment Reporting Information [Line Items]
Noninterest income	145	60	389	87
SVB Leerink
Segment Reporting Information [Line Items]
Noninterest income	131	114	450	340
Operating segments | Global Commercial Bank
Segment Reporting Information [Line Items]
Net interest income	774	513	2,108	1,462
(Provision for) reduction of credit losses	29	38	(27)	(200)
Noninterest income	182	148	515	448
Noninterest expense	(339)	(258)	(919)	(725)
Income before income tax expense	646	441	1,677	985
Total average loans, amortized cost	45,798	30,764	42,628	30,127
Total average assets	152,364	77,803	131,218	69,213
Total average deposits	149,160	74,826	128,272	66,408
Operating segments | SVB Private Bank
Segment Reporting Information [Line Items]
Net interest income	66	19	122	53
(Provision for) reduction of credit losses	(20)	15	(16)	(44)
Noninterest income	25	1	27	2
Noninterest expense	(90)	(12)	(118)	(33)
Income before income tax expense	(19)	23	15	(22)
Total average loans, amortized cost	12,506	4,263	7,573	4,053
Total average assets	14,918	4,297	8,418	4,088
Total average deposits	13,150	2,164	6,842	2,069
Operating segments | SVB Capital
Segment Reporting Information [Line Items]
Net interest income	0	0	0	0
(Provision for) reduction of credit losses	0	0	0	0
Noninterest income	145	60	389	87
Noninterest expense	(15)	(11)	(48)	(28)
Income before income tax expense	130	49	341	59
Total average loans, amortized cost	0	0	0	0
Total average assets	730	414	641	430
Total average deposits	0	0	0	0
Operating segments | SVB Leerink
Segment Reporting Information [Line Items]
Net interest income	0	0	0	0
(Provision for) reduction of credit losses	0	0	0	0
Noninterest income	131	114	450	340
Noninterest expense	(142)	(78)	(376)	(248)
Income before income tax expense	(11)	36	74	92
Total average loans, amortized cost	0	0	0	0
Total average assets	837	605	778	515
Total average deposits	0	0	0	0
Other Items
Segment Reporting Information [Line Items]
Net interest income	12	(4)	10	50
(Provision for) reduction of credit losses	(30)	(1)	(32)	(14)
Noninterest income	189	224	796	341
Noninterest expense	(293)	(132)	(707)	(336)
Income before income tax expense	(122)	87	67	41
Total average loans, amortized cost	987	2,292	1,642	1,656
Total average assets	13,841	5,229	11,897	5,515
Total average deposits	$ 1,082	$ 690	$ 999	$ 689

Segment Reporting - Segment I_2

Segment Reporting - Segment Information (Additional Information) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Goodwill	$ 344		$ 344		$ 143
Operating segments | Global Commercial Bank
Segment Reporting Information [Line Items]
Depreciation and amortization	10	$ 6	25	$ 18
Operating segments | SVB Leerink
Segment Reporting Information [Line Items]
Goodwill	138	$ 138	138	$ 138
Operating segments | SVB Private Bank
Segment Reporting Information [Line Items]
Goodwill	$ 201		$ 201

Off-Balance Sheet Arrangement_3

Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Summary Information Related to Commitments to Extend Credit (Excluding Letters of Credit) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Disclosure Off Balance Sheet Arrangements Guarantees And Other Commitments Additional Information [Abstract]
Loan commitments available for funding	$ 36,808		$ 28,975
Commercial and standby letters of credit	3,451		3,007
Total unfunded credit commitments	40,259		31,982
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses: loans	398	$ 396	448	$ 513	$ 590	$ 305
Unfunded Credit Commitments
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses: loans	$ 149	$ 120	$ 121	$ 101	$ 99	$ 67

Off-Balance Sheet Arrangement_4

Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Summary of Commercial and Standby Letters of Credit (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Guarantor Obligations [Line Items]
Expires in One Year or Less	$ 3,289
Expires After One Year	162
Total Amount Outstanding	3,451	$ 3,007
Maximum Amount of Future Payments	3,451
Financial standby letters of credit
Guarantor Obligations [Line Items]
Expires in One Year or Less	3,146
Expires After One Year	107
Total Amount Outstanding	3,253
Maximum Amount of Future Payments	3,253
Performance standby letters of credit
Guarantor Obligations [Line Items]
Expires in One Year or Less	116
Expires After One Year	21
Total Amount Outstanding	137
Maximum Amount of Future Payments	137
Commercial letters of credit
Guarantor Obligations [Line Items]
Expires in One Year or Less	27
Expires After One Year	34
Total Amount Outstanding	61
Maximum Amount of Future Payments	$ 61

Off-Balance Sheet Arrangement_5

Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Summary of Commercial and Standby Letters of Credit (Additional Information) (Details) - Standby Letter of Credit - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Commitments and Contingencies Disclosure [Line Items]
Deferred fees	$ 19	$ 17
Collateral in the form of cash	$ 2,100

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 Millions	3 Months Ended
	Sep. 30, 2021USD ($)
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Unfunded Commitments	$ 3
Parent Company
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	424
SVBFG Unfunded Commitments	15
Parent Company | CP II, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	1
SVBFG Unfunded Commitments	$ 0
SVBFG Ownership of each Fund	5.10%
Parent Company | Strategic Investors Fund II, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 15
SVBFG Unfunded Commitments	$ 1
SVBFG Ownership of each Fund	8.60%
Parent Company | Strategic Investors Fund III, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 15
SVBFG Unfunded Commitments	$ 1
SVBFG Ownership of each Fund	5.90%
Parent Company | Strategic Investors Fund IV, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 12
SVBFG Unfunded Commitments	$ 2
SVBFG Ownership of each Fund	5.00%
Parent Company | Strategic Investors Fund V funds
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 1
SVBFG Unfunded Commitments	0
Parent Company | Other venture capital and private equity fund investments
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	11
SVBFG Unfunded Commitments	3
Parent Company | Debt funds (equity method accounting)
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	59
SVBFG Unfunded Commitments	0
Parent Company | Other fund investments
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	257
SVBFG Unfunded Commitments	6
Parent Company | Capital Preferred Return Fund, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	13
SVBFG Unfunded Commitments	$ 0
SVBFG Ownership of each Fund	20.00%
Parent Company | Growth Partners, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 25
SVBFG Unfunded Commitments	$ 1
SVBFG Ownership of each Fund	33.00%
Parent Company | Strategic Investors Fund, LP
Venture Capital and Private Equity Fund Investments [Line Items]
SVBFG Capital Commitments	$ 15
SVBFG Unfunded Commitments	$ 1
SVBFG Ownership of each Fund	12.60%

Off-Balance Sheet Arrangement_7

Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Total Capital Commitments, Unfunded Capital Commitments, and Our Ownership in Each Fund (Additional Information) (Details) - Investment	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Upper Limit
Venture Capital and Private Equity Fund Investments [Line Items]
Percentage of ownership (less than 5%)	5.00%
Consolidated venture capital and private equity fund investments
Venture Capital and Private Equity Fund Investments [Line Items]
Commitments to invest, period from the inception of the fund	10 years
Call unrestricted, percentage of committed capital	100.00%
Consolidated venture capital and private equity fund investments | Lower Limit
Venture Capital and Private Equity Fund Investments [Line Items]
Expected commitment period to invest in venture capital and private equity funds (in years)	5 years
Consolidated venture capital and private equity fund investments | Upper Limit
Venture Capital and Private Equity Fund Investments [Line Items]
Expected commitment period to invest in venture capital and private equity funds (in years)	7 years
Non-marketable securities | Consolidated venture capital and private equity fund investments | Equity method accounting | CP II, LP
Venture Capital and Private Equity Fund Investments [Line Items]
Percentage of ownership (less than 5%)	5.10%	5.10%
Non-marketable securities | Consolidated venture capital and private equity fund investments | Equity method accounting | Other fund investments
Venture Capital and Private Equity Fund Investments [Line Items]
Number of other funds with investment commitments	159
Non-marketable securities | Consolidated venture capital and private equity fund investments | Equity method accounting | Other fund investments | Upper Limit
Venture Capital and Private Equity Fund Investments [Line Items]
Percentage of ownership (less than 5%)	5.00%
Non-marketable securities | Consolidated venture capital and private equity fund investments | Direct ownership interest | Equity method accounting | CP II, LP
Venture Capital and Private Equity Fund Investments [Line Items]
Percentage of ownership (less than 5%)	1.30%
Non-marketable securities | Consolidated venture capital and private equity fund investments | Indirect ownership interest | Equity method accounting | CP II, LP
Venture Capital and Private Equity Fund Investments [Line Items]
Percentage of ownership (less than 5%)	3.80%

Off-Balance Sheet Arrangement_8

Off-Balance Sheet Arrangements, Guarantees and Other Commitments - Remaining Unfunded Commitments to Venture Capital or Private Equity Funds by our Consolidated Managed Funds (Details) $ in Millions	Sep. 30, 2021USD ($)
Commitments and Contingencies Disclosure [Line Items]
Unfunded Commitments	$ 3

Income Taxes (Details)

Income Taxes (Details) $ in Millions	Sep. 30, 2021USD ($)
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 32
Income tax reduction from recognized tax benefit	$ 26

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2021USD ($)	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	$ 22,984	$ 22,984	$ 30,913
Derivative Assets	314	314	285
Derivative Liabilities	274	274	237
Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	14	14	0
Derivative Liabilities	0	0	0
Client interest rate derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	115	115	68
Derivative Liabilities	116	116	27
U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	9,277	9,277	4,470
U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	208	208	237
Foreign government debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	15	15	24
Residential mortgage-backed securities | Agency-issued mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	10,784	10,784	13,503
Residential mortgage-backed securities | Agency-issued collateralized mortgage obligations—fixed rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	1,138	1,138	8,107
Agency-issued commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	1,562	1,562	4,572
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	22,984	22,984	30,913
Total assets	24,100	24,100	31,956
Total liabilities	282	282	237
Recurring | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets	8	8
Recurring | Foreign exchange contract | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	185	185	217
Recurring | Foreign exchange contract | Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	158	158	210
Recurring | Equity warrant assets | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	274	274	203
Recurring | Interest rate swaps | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	14	14
Recurring | Client interest rate derivatives | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	115	115	68
Recurring | Client interest rate derivatives | Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	116	116	27
Other liabilities	8	8
Recurring | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	520	520	555
Recurring | Other securities | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	158	158	281
Recurring | U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	9,277	9,277	4,470
Recurring | U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	208	208	237
Recurring | Foreign government debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	15	15	24
Recurring | Residential mortgage-backed securities | Agency-issued mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	10,784	10,784	13,503
Recurring | Residential mortgage-backed securities | Agency-issued collateralized mortgage obligations—fixed rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	1,138	1,138	8,107
Recurring | Agency-issued commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	1,562	1,562	4,572
Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	9,292	9,292	4,494
Total assets	9,343	9,343	4,537
Total liabilities	8	8	0
Recurring | Level 1 | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets	8	8
Recurring | Level 1 | Foreign exchange contract | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Recurring | Level 1 | Foreign exchange contract | Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	0	0	0
Recurring | Level 1 | Equity warrant assets | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Recurring | Level 1 | Interest rate swaps | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0
Recurring | Level 1 | Client interest rate derivatives | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Recurring | Level 1 | Client interest rate derivatives | Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	0	0	0
Other liabilities	8	8
Recurring | Level 1 | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	43	43	43
Recurring | Level 1 | Other securities | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	43	43	43
Recurring | Level 1 | U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	9,277	9,277	4,470
Recurring | Level 1 | U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0	0	0
Recurring | Level 1 | Foreign government debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	15	15	24
Recurring | Level 1 | Residential mortgage-backed securities | Agency-issued mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0	0	0
Recurring | Level 1 | Residential mortgage-backed securities | Agency-issued collateralized mortgage obligations—fixed rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0	0	0
Recurring | Level 1 | Agency-issued commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0	0	0
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	13,692	13,692	26,419
Total assets	14,130	14,130	26,953
Total liabilities	274	274	237
Recurring | Level 2 | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets	0	0
Recurring | Level 2 | Foreign exchange contract | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	185	185	217
Recurring | Level 2 | Foreign exchange contract | Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	158	158	210
Recurring | Level 2 | Equity warrant assets | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	9	9	11
Recurring | Level 2 | Interest rate swaps | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	14	14
Recurring | Level 2 | Client interest rate derivatives | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	115	115	68
Recurring | Level 2 | Client interest rate derivatives | Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	116	116	27
Other liabilities	0	0
Recurring | Level 2 | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	115	115	238
Recurring | Level 2 | Other securities | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	115	115	238
Recurring | Level 2 | U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0	0	0
Recurring | Level 2 | U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	208	208	237
Recurring | Level 2 | Foreign government debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0	0	0
Recurring | Level 2 | Residential mortgage-backed securities | Agency-issued mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	10,784	10,784	13,503
Recurring | Level 2 | Residential mortgage-backed securities | Agency-issued collateralized mortgage obligations—fixed rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	1,138	1,138	8,107
Recurring | Level 2 | Agency-issued commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	1,562	1,562	4,572
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0	0	0
Total assets	265	265	192
Total liabilities	0	0	0
Recurring | Level 3 | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets	0	0
Recurring | Level 3 | Foreign exchange contract | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Recurring | Level 3 | Foreign exchange contract | Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	0	0	0
Recurring | Level 3 | Equity warrant assets | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	265	265	192
Recurring | Level 3 | Interest rate swaps | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0
Recurring | Level 3 | Client interest rate derivatives | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Recurring | Level 3 | Client interest rate derivatives | Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	0	0	0
Other liabilities	0	0
Recurring | Level 3 | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	0	0	0
Recurring | Level 3 | Other securities | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	0	0	0
Recurring | Level 3 | U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0	0	0
Recurring | Level 3 | U.S. agency debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0	0	0
Recurring | Level 3 | Foreign government debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0	0	0
Recurring | Level 3 | Residential mortgage-backed securities | Agency-issued mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0	0	0
Recurring | Level 3 | Residential mortgage-backed securities | Agency-issued collateralized mortgage obligations—fixed rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0	0	0
Recurring | Level 3 | Agency-issued commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0	0	0
Recurring | Measured at net asset value | Consolidated venture capital and private equity fund investments | Fair value accounting
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable securities	$ 362	$ 362	$ 274
Lower Limit | Other equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value inputs, sales restriction, period	3 years
Lower Limit | Level 3 | Equity warrant asset, public portfolio
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value inputs, sales restriction, period	3 months
Upper Limit | Other equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value inputs, sales restriction, period		6 months
Upper Limit | Level 3 | Equity warrant asset, public portfolio
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value inputs, sales restriction, period	6 months
Sales restrictions discount | Level 3 | Equity warrant asset, public portfolio
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	0.100	0.100
Sales restrictions discount | Lower Limit | Other equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	0.10	0.10
Sales restrictions discount | Lower Limit | Level 3 | Equity warrant asset, public portfolio
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	0.10	0.10	0.100
Sales restrictions discount | Upper Limit | Other equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	0.20	0.20
Sales restrictions discount | Upper Limit | Equity warrant asset, public portfolio
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	0.20	0.20
Sales restrictions discount | Upper Limit | Level 3 | Equity warrant asset, public portfolio
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	0.20	0.20	0.200

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Additional Information about Level 3 Assets Measured at Fair Value on a Recurring Basis (Details) - Recurring - Equity warrant assets - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 257	$ 165	$ 192	$ 161
Total Net Gains Included in Net Income	149	53	490	91
Sales/Exits	(146)	(29)	(431)	(74)
Issuances	6	5	18	16
Transfers Into Level 3	(1)	(1)	(4)	(1)
Ending Balance	$ 265	$ 193	$ 265	$ 193

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Unrealized Gains Included in Earnings Attributable to Level 3 Assets Held (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Unrealized Gains (Losses) [Line Items]
Unrealized gains included in earnings attributable to Level 3 assets still held	$ 21	$ 26	$ 113	$ 33
Equity warrant assets | Other assets
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Unrealized Gains (Losses) [Line Items]
Unrealized gains included in earnings attributable to Level 3 assets still held	$ 21	$ 26	$ 113	$ 33

Fair Value of Financial Instr_6

Fair Value of Financial Instruments - Quantitative Information About Significant Unobservable Inputs (Details) $ in Millions	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Sales restrictions discount | Equity warrant asset, public portfolio | Upper Limit
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.20
Level 3 | Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 4	$ 1
Level 3 | Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 261	$ 191
Level 3 | Volatility | Equity warrant asset, public portfolio | Lower Limit
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.282	0.460
Level 3 | Volatility | Equity warrant asset, public portfolio | Upper Limit
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.569	0.568
Level 3 | Volatility | Equity warrant asset, public portfolio | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.504	0.491
Level 3 | Volatility | Equity warrant assets, private portfolio | Lower Limit
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.258	0.244
Level 3 | Volatility | Equity warrant assets, private portfolio | Upper Limit
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.569	0.568
Level 3 | Volatility | Equity warrant assets, private portfolio | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.439	0.432
Level 3 | Risk-Free interest rate | Equity warrant asset, public portfolio | Lower Limit
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.0004	0.003
Level 3 | Risk-Free interest rate | Equity warrant asset, public portfolio | Upper Limit
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.015	0.009
Level 3 | Risk-Free interest rate | Equity warrant asset, public portfolio | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.012	0.006
Level 3 | Risk-Free interest rate | Equity warrant assets, private portfolio | Lower Limit
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.0004	0.0001
Level 3 | Risk-Free interest rate | Equity warrant assets, private portfolio | Upper Limit
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.0116	0.0052
Level 3 | Risk-Free interest rate | Equity warrant assets, private portfolio | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.004	0.001
Level 3 | Sales restrictions discount | Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.100
Level 3 | Sales restrictions discount | Equity warrant asset, public portfolio | Lower Limit
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.10	0.100
Level 3 | Sales restrictions discount | Equity warrant asset, public portfolio | Upper Limit
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.20	0.200
Level 3 | Sales restrictions discount | Equity warrant asset, public portfolio | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.167	0.102
Level 3 | Marketability discount | Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.208	0.206
Level 3 | Marketability discount | Equity warrant assets, private portfolio | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.208	0.206
Level 3 | Remaining life assumption | Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.400	0.400
Level 3 | Remaining life assumption | Equity warrant assets, private portfolio | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted  Average	0.400	0.400

Fair Value of Financial Instr_7

Fair Value of Financial Instruments - Quantitative Information About Significant Unobservable Inputs (Additional Information) (Details)	3 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Equity warrant assets, private portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted average remaining life	6 years 7 months 6 days
Weighted average remaining life	2 years 7 months 6 days
Sales restrictions discount | Upper Limit | Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.20
Level 3 | Lower Limit | Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value inputs, sales restriction, period	3 months
Level 3 | Upper Limit | Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value inputs, sales restriction, period	6 months
Level 3 | Sales restrictions discount | Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.100
Level 3 | Sales restrictions discount | Lower Limit | Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.10	0.100
Level 3 | Sales restrictions discount | Upper Limit | Equity warrant asset, public portfolio
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Measurement input	0.20	0.200

Fair Value of Financial Instr_8

Fair Value of Financial Instruments - Summary of Estimated Fair Values of Financial Instruments not Carried at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
HTM securities	$ 81,995,000	$ 17,217,000
Net loans	61,089,000	44,733,000
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	18,940,000	17,675,000
HTM securities	82,365,000	16,592,000
Non-marketable securities not measured at net asset value	350,000	241,000
Non-marketable securities measured at net asset value	692,000	390,000
Net loans	61,089,000	44,734,000
FHLB and Federal Reserve Bank stock	107,000	61,000
Non-maturity deposits	169,833,000	101,294,000
Time deposits	1,349,000	688,000
Commitments to extend credit	0	0
Carrying Amount | Short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	97,000	21,000
Carrying Amount | 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	349,000	349,000
Carrying Amount | 3.125% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	496,000	495,000
Carrying Amount | 1.800% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	495,000
Carrying Amount | 2.100% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	496,000
Junior subordinated debentures	90,000
Estimate of Fair Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	18,940,000	17,675,000
HTM securities	81,995,000	17,217,000
Non-marketable securities not measured at net asset value	350,000	241,000
Non-marketable securities measured at net asset value	692,000	390,000
Net loans	62,489,000	45,324,000
FHLB and Federal Reserve Bank stock	107,000	61,000
Non-maturity deposits	169,833,000	101,294,000
Time deposits	1,350,000	502,000
Commitments to extend credit	45,000	37,000
Estimate of Fair Value Measurement | Short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	97,000	21,000
Estimate of Fair Value Measurement | 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	376,000	383,000
Estimate of Fair Value Measurement | 3.125% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	535,000	564,000
Estimate of Fair Value Measurement | 1.800% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	481,000
Estimate of Fair Value Measurement | 2.100% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	505,000
Junior subordinated debentures	86,000
Estimate of Fair Value Measurement | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	18,940,000	17,675,000
HTM securities	0	0
Non-marketable securities not measured at net asset value	0	0
Non-marketable securities measured at net asset value	0	0
Net loans	0	0
FHLB and Federal Reserve Bank stock	0	0
Non-maturity deposits	169,833,000	101,294,000
Time deposits	0	0
Commitments to extend credit	0	0
Estimate of Fair Value Measurement | Level 1 | Short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	0	0
Estimate of Fair Value Measurement | Level 1 | 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	0	0
Estimate of Fair Value Measurement | Level 1 | 3.125% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	0	0
Estimate of Fair Value Measurement | Level 1 | 1.800% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	0
Estimate of Fair Value Measurement | Level 1 | 2.100% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	0
Junior subordinated debentures	0
Estimate of Fair Value Measurement | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
HTM securities	81,995,000	17,217,000
Non-marketable securities not measured at net asset value	0	0
Non-marketable securities measured at net asset value	0	0
Net loans	0	0
FHLB and Federal Reserve Bank stock	0	0
Non-maturity deposits	0	0
Time deposits	1,350,000	502,000
Commitments to extend credit	0	0
Estimate of Fair Value Measurement | Level 2 | Short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	97,000	21,000
Estimate of Fair Value Measurement | Level 2 | 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	376,000	383,000
Estimate of Fair Value Measurement | Level 2 | 3.125% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	535,000	564,000
Estimate of Fair Value Measurement | Level 2 | 1.800% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	481,000
Estimate of Fair Value Measurement | Level 2 | 2.100% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	505,000
Junior subordinated debentures	86,000
Estimate of Fair Value Measurement | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
HTM securities	0	0
Non-marketable securities not measured at net asset value	350,000	241,000
Non-marketable securities measured at net asset value	0	0
Net loans	62,489,000	45,324,000
FHLB and Federal Reserve Bank stock	107,000	61,000
Non-maturity deposits	0	0
Time deposits	0	0
Commitments to extend credit	45,000	37,000
Estimate of Fair Value Measurement | Level 3 | Short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term borrowings	0	0
Estimate of Fair Value Measurement | Level 3 | 3.50% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	0	0
Estimate of Fair Value Measurement | Level 3 | 3.125% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	0	$ 0
Estimate of Fair Value Measurement | Level 3 | 1.800% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	0
Estimate of Fair Value Measurement | Level 3 | 2.100% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	0
Junior subordinated debentures	$ 0

Fair Value of Financial Instr_9

Fair Value of Financial Instruments - Summary of Estimated Fair Values of Investments and Remaining Unfunded Commitments for Each Major Category of Investments (Details) $ in Millions	Sep. 30, 2021USD ($)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Carrying Amount	$ 1,057
Fair Value	1,057
Unfunded Commitments	17
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	361
Fair Value	361
Unfunded Commitments	9
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	656
Fair Value	656
Unfunded Commitments	7
Non-marketable securities | Debt funds | Equity method accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Carrying Amount	5
Fair Value	5
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	35
Fair Value	35
Unfunded Commitments	$ 1

Fair Value of Financial Inst_10

Fair Value of Financial Instruments - Summary of Estimated Fair Values of Investments and Remaining Unfunded Commitments for Each Major Category of Investments (Textual) (Details) $ in Millions	3 Months Ended
	Sep. 30, 2021USD ($)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	$ 1,057
Unfunded commitments	17
Non-marketable securities | Venture capital and private equity fund investments | Fair value accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	361
Unfunded commitments	$ 9
Non-marketable securities | Venture capital and private equity fund investments | Fair value accounting | Lower Limit
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Period distributions from fund investments to be received	10 years
Non-marketable securities | Venture capital and private equity fund investments | Fair value accounting | Upper Limit
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Period distributions from fund investments to be received	13 years
Non-marketable securities | Venture capital and private equity fund investments | Equity method accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	$ 656
Unfunded commitments	7
Non-marketable securities | Venture capital and private equity fund investments | Noncontrolling Interests | Fair value accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	102
Unfunded commitments	2
Non-marketable securities | Other investments | Equity method accounting
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	35
Unfunded commitments	$ 1
Non-marketable securities | Other investments | Equity method accounting | Lower Limit
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Period distributions from fund investments to be received	5 years
Non-marketable securities | Other investments | Equity method accounting | Upper Limit
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Period distributions from fund investments to be received	8 years

Subsequent Events (Details)

Subsequent Events (Details)	Oct. 28, 2021USD ($)$ / sharesshares	Sep. 30, 2021USD ($)$ / shares	Dec. 31, 2020USD ($)$ / shares
Subsequent Event [Line Items]
Preferred stock, par value, in usd per share		$ 0.001	$ 0.001
Long-term debt | $		$ 1,925,000,000	$ 844,000,000
Subsequent Event | Senior Notes | 1.800% Senior Notes Due October 2026
Subsequent Event [Line Items]
Long-term debt | $	$ 650,000,000
Interest rate on senior notes	1.80%
Subsequent Event | Series D Preferred Stock
Subsequent Event [Line Items]
Preferred stock, depository share ownership interest	0.01
Preferred stock, depositary shares issued | shares	1,000,000
Preferred stock, par value, in usd per share	$ 0.001
Preferred stock, liquidation preference per share, in usd per share	100,000
Preferred stock, liquidation preference per depositary share	$ 1,000
Preferred stock, dividend rate, percentage	4.25%
Preferred stock, period dividend rate reset using the five-year treasury rate	5 years
Preferred stock, number of business days prior to each reset date dividend rate calculated	3 days
Preferred stock, number of days used for average yields on actively traded US Treasury securities	5 days
Preferred stock, margin used for dividend rate at reset	3.074%
Subsequent Event | Series E Preferred Stock
Subsequent Event [Line Items]
Preferred stock, depository share ownership interest	0.01
Preferred stock, depositary shares issued | shares	600,000
Preferred stock, par value, in usd per share	$ 0.001
Preferred stock, liquidation preference per share, in usd per share	100,000
Preferred stock, liquidation preference per depositary share	$ 1,000
Preferred stock, dividend rate, percentage	4.70%
Preferred stock, period dividend rate reset using the ten-year treasury rate	10 years
Preferred stock, number of business days prior to each reset date dividend rate calculated	3 days
Preferred stock, number of days used for average yields on actively traded US Treasury securities	5 days
Preferred stock, margin used for dividend rate at reset	3.064%